Entries |
Document | Title | Date |
20080208069 | System and methods of hierarchical cardiac event detection - A system for the detection of cardiac events occurring in a human patient is provided. At least two electrodes are included in the system for obtaining an electrical signal from a patient's heart. An electrical signal processor is electrically coupled to the electrodes for processing the electrical signal. An electrogram analysis scheme is described, according to which electrogram segments or individual beats are classified according to various features, and different cardiac event tests are applied based on this classification. | 08-28-2008 |
20080214944 | SYSTEM, APPARATUS AND METHOD FOR MOBILE REAL-TIME FEEDBACK BASED ON CHANGES IN THE HEART TO ENHANCE COGNITIVE BEHAVIORAL THERAPY FOR ANGER OR STRESS REDUCTION - A system, apparatus and method for mobile real-time feedback based on changes in the heart to enhance cognitive behavioral therapy for anger or stress reduction. In an embodiment, an apparatus receives data relating to a heart of an individual from at least one input device. The apparatus provides a mobile intervention via at least one output device and measures the effectiveness of the mobile intervention in reducing anger or stress in the individual. Other embodiments are described and claimed. | 09-04-2008 |
20080228091 | METHOD AND SYSTEM FOR PATIENT EVALUATION - A method for evaluating a patient is disclosed herein. The method includes performing an exercise test on a patient, obtaining an electrocardiogram during the exercise test, converting the electrocardiogram to an audio file, and analyzing the audio file in order to evaluate the patient. A corresponding system for evaluating a patient is also provided. | 09-18-2008 |
20080228092 | Cardiac Sensing by Implantable Medical Devices During Magnetic Resonance Imaging - Embodiments of the invention can include a method for reducing MRI interference from a physiological electrical signal received in an implantable medical device. The method can include the steps of amplifying the physiological electrical signal with a high bandwidth amplifier and sampling the amplified physiological electrical signal at a sampling frequency of at least 8 kHz to obtain a first high-frequency sequence of samples. The method can further includes the steps of processing the first high-frequency sequence of samples to identify a signal artifact that is characteristic of MRI interference and creating a second high-frequency sequence of samples by reducing the signal artifact characteristic of MRI interference from the first sequence of samples. Embodiments can also include a method of determining a heart rate from a physiological electrical signal received in an implantable medical device. Embodiments can also includes an implantable medical device that receives and processes a physiological electrical signal. Other embodiments are also described herein. | 09-18-2008 |
20080234591 | METHODS AND APPARATUS FOR PATIENT NOTIFICATION OF PHYSIOLOGIC EVENTS AND DEVICE FUNCTION - Apparatus and method according to the disclosure relate to a resilient shroud member mechanically and electrically coupled to an implantable medical device (IMD). The assembly is used to provide a subcutaneous cardiac activity sensing device via at least a pair of electrodes mechanically coupled to the shroud member. In the event that a patient needs to be notified for a follow-up visit to a clinic or the IMD requires attention, the electrode array signals the patient via a small electrical current passing through a surgical pocket. | 09-25-2008 |
20080234592 | Method and apparatus for generating an electrocardiogram - A method of recording information for use in generating an electrocardiogram indicative of a health status of a user's heart, the method being operable using a device ( | 09-25-2008 |
20080234593 | Method And Apparatus For Detecting Heartbeats - A security system for detecting heartbeats. The system monitors vibrations and detects in these vibrations signals representative of a heartbeat based on a library of heartbeat signatures. The system library may have signatures representing multiple heartbeat patterns such that the system can detect the heartbeat of a human or other animal. | 09-25-2008 |
20080243012 | Method of compressing electrocardiogram data and electrocardiogram telemetry system using the same - In an electrocardiogram telemeter, a data acquirer is operable to acquire electrocardiogram data. A data compressor is operable to compress the electrocardiogram data with either a wavelet transform, a Huffman coding, or an arithmetic coding, thereby generating compressed electrocardiogram data adapted to be transmitted to a remote receiver which is configured to reconstruct the electrocardiogram data. | 10-02-2008 |
20080243013 | Biosignal measuring equipment - A signal-to-noise ratio and measurement precision is increased in electrode units disposed on the left and right sides of a steering wheel. A plurality of electrode units is disposed in the left and right handholds of a steering wheel. The contact impedances of all the electrode units are measured. A pair of left and right electrode units to be used to measure an electrocardiographic signal is designated from among the electrode units whose measured contact impedances are less than or equal to a first threshold. The results of measurement of an electrocardiographic signal by the designated electrode units are added in order to minimize noise. An electrode unit with high contact impedance is used to measure induction noise and remove the induction noise component from the electrocardiographic signal measurement result. | 10-02-2008 |
20080249424 | Non-Contact Cardiac Mapping, Including Moving Catheter and Multi-Beat Integration - A non-contact cardiac mapping method is disclosed that includes: (i) inserting a catheter into a heart cavity having an endocardium surface, the catheter including multiple, spatially distributed electrodes; (ii) measuring signals at the catheter electrodes in response to electrical activity in the heart cavity with the catheter spaced from the endocardium surface; and (iii) determining physiological information at multiple locations of the endocardium surface based on the measured signals and positions of the electrodes with respect to the endocardium surface. Related systems and computer programs are also disclosed. | 10-09-2008 |
20080262363 | MOBILE HEMODYNAMIC AND ELECTROPHYSIOLOGICAL INTERFACE TO PHYSIOLOGICAL MONITORS AND METHOD OF USE - Certain embodiments provide systems and methods for patient monitoring using a mobile workstation and one or more patient monitors. Certain embodiments include selecting a patient monitor via a mobile physiological monitoring workstation; acquiring physiological data from the patient monitor; and displaying the physiological data at the mobile physiological monitoring workstation. The data is transmitted over a network from the patient monitor to the mobile physiological monitoring workstation without a dedicated connection between the mobile physiological monitoring workstation and the patient monitor. Certain embodiments include at least one patient monitor capable of obtaining and transmitting physiological data for a patient; a mobile physiological monitoring workstation receiving physiological data; and a network enabling exchange of physiological data between the at least one patient monitor and the workstation. The workstation may select one or more of the at least one patient monitor from which to receive physiological data for the patient. | 10-23-2008 |
20080262364 | Monitoring Apparatus for Monitoring a User's Heart Rate and/or Heart Rate Variation; Wristwatch Comprising Such a Monitoring Apparatus - Monitoring apparatus ( | 10-23-2008 |
20080269626 | FALSE POSITIVE REDUCTION IN SPO2 ATRIAL FIBRILLATION DETECTION USING AVERAGE HEART RATE AND NIBP - The method and system includes detecting atrial fibrillation in a patient by monitoring the blood oxygen saturation level over a period of time. The method and system produces a plethysmographic waveform from the monitored blood oxygen saturation level and analyzes the plethysmographic waveform and detected intervals and determines whether the patient is in atrial fibrillation. The method and system is preferably implemented in a software application and may be configured to report to the user on the current state of atrial fibrillation (AFIB) and a current trend. | 10-30-2008 |
20080275353 | COHERENT SIGNAL REJECTION IN ECG - A method for monitoring an electrocardiogram (ECG) signal of a subject, includes digitally sampling an average signal from at least a first ECG electrode, determining an average interference frequency, and digitally sampling and buffering a raw ECG signal from at least a second ECG electrode. The method further includes: filtering the raw ECG signal to generate a residual signal; calculating, based on the residual signal, a first amplitude and a first phase shift of a primary interference signal at the average interference frequency and a second amplitude and a second phase shift of one or more harmonic interference signals at respective multiples of the average interference frequency; and digitally subtracting the primary interference signal and the one or more harmonic interference signals from the raw ECG signal so as to generate and output a clean ECG signal. | 11-06-2008 |
20080281215 | Heart monitor electrode system - A bioelectric interface for monitoring, detection and transmission of detected ECG data is provided comprising a sensory system for detecting bio-physiological measurements utilizing spatially resolved potential profiles obtained from a localized cluster of sub-electrodes to form constituent sets of miniature sensor arrays. Using only a single macro-electrode, two or more sets of sub-electrode arrays are used to measure bipolar spatial gradients obtained from measured cardiac potentials. The sets of sub-electrodes containing the clusters are optimized to attain measurable gradients of diagnostic value. A minimax procedure allows bio-potential sensory acquisition through a bi-directional digital steering process, which essentially comprises monitoring, detection, selection, grouping, recording and transmission of ECG waveform characteristic data. | 11-13-2008 |
20080287818 | PRESSURE MEASUREMENT-BASED ISCHEMIA DETECTION - In some aspects ischemia is indicated based on cardiac pressure measurements. For example, ischemia may be indicated based on an increase in an intraventricular electromechanical delay where mechanical contractions are detected by measuring pressure in a cardiac chamber. Ischemia detection also may involve obtaining timing information relating to a mechanical contraction of at least one ventricle to identify an intraventricular dyssynchrony. In this case, pressure measurements may be used to identify the timing of the mechanical contraction. Ischemia may be indicated based on a change in a time interval associated with a systolic interval of a ventricle. Ischemia also may be indicated based on an intracardiac electrogram-based indication of ischemia in conjunction with an increase in mean left atrial pressure and/or an increase in the size of a v-wave. | 11-20-2008 |
20080300496 | Method for delineation of characteristic points in an electrocardiogram signal, and storage medium, electronic device and electrocardiogram signal analyzing system for implementing the method - A method for delineation of characteristic points in an electrocardiogram signal includes the steps of: (a) processing the electrocardiogram signal to obtain at least one multiscale differential operator wavelet transform thereof; and (b) locating at least one characteristic point in at least one wave segment of the electrocardiogram signal based on the at least one multiscale differential operator wavelet transform. | 12-04-2008 |
20080306394 | Measuring Conduction Velocity Using One or More Satellite Devices - A method for measuring the conduction velocity of a depolarization wave in a tissue employs a first satellite located within the tissue and a second that satellite is located within the tissue a distance away from the first satellite, e.g., by using the time of depolarization wave as reported from each satellite and the distance to determine velocity of the wave. Also provided are systems and kits that find use in accordance with the invention. | 12-11-2008 |
20080306395 | Portable Electrocardiograph - A portable electrocardiograph comprising a housing and a second electrode which is provided on one end of the housing, characterized in that a clamping cover which tends to close automatically is provided on the other end of the housing; an oval finger hole is provided between the clamping cover and the housing; the lower half of the inner wall of the finger hole is defined on the housing; the lower half of the inner wall is provided with a first electrode; and the upper half of the inner wall of the finger hole is provided on the clamping cover, such that the present invention provides the portable electrocardiograph of simple structure, convenient use, and high reliability for heart disease sufferers. | 12-11-2008 |
20080319330 | TRANSMITTER AND RECEIVER FOR OBSERVING PERIODICAL EVENTS - A mobile transmitter for observing events and transmitting data on the observed events to a receiver and a device for receiving data messages from the mobile transmitter. The transmitter and receiver are designed so as to provide efficient and reliable transmission of data from the mobile transmitter to the receiver device. | 12-25-2008 |
20090012414 | Diagnostic Parameter Calculation Method, System for Diagnosis and Diagnostic Program - The present invention provides a way to prognosticate some abnormality of the heart condition through analyzing the electrocardiogram of a patient. In R-R interval detection section | 01-08-2009 |
20090018456 | Display storage apparatus capable of detecting a pulse - A display storage apparatus capable of detecting a pulse made in form of a pulse MP3/4 or a wristwatch and comprising: a) a casing having an LCD screen disposed at the front side thereof; b) a heartbeat detector unit having a plurality of electrode patches extended out from the casing and directly attached onto a human chest for detecting a pulse, the signal being transmitted in a way of wire or wireless transmission; c) a voltage sensor unit installed in the casing for sending a voltage change frequency; d) a digital signal processor for receiving a signal transmitted from the voltage sensor unit, and cumulating the signals to obtain a user's pulse (or heartbeat) value; e) a flash memory having a plurality of partitioned memory blocks with at least one memory block for storing an Auto Run program; f) a USB interface disposed on a lateral side of the casing, and electrically coupled to the digital signal processor, and if the USB interface is connected to a personal computer, the Auto Run program stored in the flash memory automatically stores the measured data of a user's pulses accumulated in a certain period of time into an operating system of the personal computer and further analyzes and record the user's physiological conditions. In this way, the apparatus can be used for listening to music anytime, displaying the current time, analyzing and evaluating a user's exercise and physiological conditions. | 01-15-2009 |
20090018457 | Clip-type monitoring device for wirelessly transmitting the heart rate - A clip-type monitoring device for wirelessly transmitting a heart rate comprises a housing of which the back is formed with a clip, which may be clipped onto the clothes, and the flank is formed with a jack connected to an external signal; a heart rate monitoring unit formed with multiple electrode pads extending from the housing; a voltage sensor unit provided in the housing so that the voltage variation frequency measured is filtered by the inductors and then transmitted to the filter shaping amplifier circuit to receive an amplified signal; and a radio frequency module having a wireless signal transmission circuit and provided in the housing for transmitting the signal amplified by the voltage sensor unit to a display storage device having a wireless signal receiving circuit. The housing inside which the heart rate monitoring module is provided to accurately measure the pulsation is light and thin and conveniently hanged on the clothes without burden. | 01-15-2009 |
20090018458 | Pure digital medical amplifier for digitally acquiring, conditioning, storing, and transferring clinical and non-clinical biomedical signals - A new apparatus of pure digital medical amplifier used for clinical and non-clinical biomedical signal acquisition purposes is disclosed, which include: multiple single-stage amplification buffers connected to biomedical signal inputs for receiving and buffering various biomedical and reference signals, one or more high resolution analog-to-digital converter whose analog inputs connected to the output of said buffers for digitizing biomedical signals, one or more digital signal controller whose inputs/outputs are connected to said buffers and analog-to-digital converters for receiving the digitized biomedical signal data and controlling the processing and output of said digitized biomedical signal data according to preset control program or user's commands. By real-time or non-real-time method said digital signal controller does the following signal processing on the digitized biomedical signal data: filtering, compressing, decompressing, encoding, decoding, transferring, storing and retrieving, analyzing, and displaying the required said digitized biomedical signal data. This invention of amplifier requires only a few electronic components, and yields extremely low internal noise, extremely low distortion of analog output, extremely high external noise rejection and immunity, extremely high flexibility in filtering frequency setting for various biomedical signals. | 01-15-2009 |
20090024044 | DATA RECORDING FOR PATIENT STATUS ANALYSIS - A method and system for analyzing the status of a subject. A cordless recording device comprising a set of electrodes is attached on the forehead of the subject to collect brain wave signal data from the subject. Based on the brain wave signal data, status information indicative of the status of the subject during a measurement period is generated. A bioimpedance signal is further measured through two electrodes of the electrode set and heart rate data is derived from the bioimpedance signal. The heart rate data is utilized to enhance the quality of the status information, which is typically sleep state information. The invention also relates to a recording device attachable to the forehead of the subject. The recording may comprise a data memory for storing the data measured from the subject during the measurement period. | 01-22-2009 |
20090030333 | HEART RATE MONITOR FOR SWIMMERS - There provided a heart rate monitor that includes a pair of electrodes, a program control panel having a power supply, a vibration feedback module for advising the user when predetermined heart rates have been reached, and a data retrieval member. The electrodes are arranged to be in contact with the swimmer's body and connected to a microcontroller in program control panel. The program control panel has a plurality of heart rate selection members that provide a signal for sending to the swimmer when the predetermined heart rate has been reached. When the predetermined heart rate is reached, the signal is sent to a vibration feedback module. Another aspect of the present invention is to log heart rate data and swimming duration. This is accomplished by providing the program control panel with blue tooth zone selectors that export data from the program control panel and imports the data to a hand held computer. There are several embodiments of the heart rate monitor described, each of which uses various aspects of a swimsuit depending upon the style and convenience desired by the user. | 01-29-2009 |
20090043217 | HEART RATE MONITOR WITH CROSS TALK REDUCTION - A heart rate monitor determines a heart rate for a primary subject by reducing noise and cross-talk from unwanted signal transmission sources. A set of pulse peaks having about the same amplitude and an amplitude greater than any other set of peaks are processed to determine a subject's heart rate, while data having an amplitude below that of the set of peaks is ignored. To retrieve enough data to determine a peak amplitude, the signal having heart rate information is sampled at a frequency higher than a normal sampling frequency. In some embodiments, if no data is received for a set time period which is in or above the range, the threshold resets to zero under an assumption that the primary subject is no longer within transmitting range. | 02-12-2009 |
20090054795 | METHOD FOR GENERATING THREE STANDARD SURFACE ECG LEADS DERIVED FROM THREE ELECTRODES CONTAINED IN THE MID-HORIZONTAL PLANE OF THE TORSO - A method for a 3-lead electrocardiographic (ECG) recording comprising three signal electrodes contained in the mid-horizontal plane of the human torso and the calculation of the standard leads I, II and III. Such electrodes are placed in-line as in a chest belt instead of the traditional positioning of electrodes in the upper and low parts of the frontal plane of the torso. | 02-26-2009 |
20090054796 | Patient Screening Tools for Implantable Cardiac Stimulus Systems - Tools and devices are provided for determining whether a patient is well suited to receiving an implantable cardiac stimulation device by analyzing cardiac signals captured using external or cutaneous electrodes. Some of the illustrative tools include shapes for visual comparison to printed ECG strips. Automatic devices are also disclosed which perform at least some analytical functions electronically for a user. In an example, a printed ECG strip is visually compared to a shape in order to ensure a patient is well suited to receiving a cardiac stimulation device having a particular implant location and/or cardiac signal analysis method implementation. | 02-26-2009 |
20090062670 | HEART MONITORING BODY PATCH AND SYSTEM - Provided is a diagnostic patch system for monitoring and storing patient information, which includes sensors, a data storage unit, and a transceiver. Each of the sensors is attached to a skin to detect a patient data. The data storage unit is configured to store stream of the detected patient data from the plurality of sensors. The transceiver, connected with the sensors and the data storage unit, communicates the stream of the patient data with an analyzer, and the analyzer is configured to process and analyze the stream of the patient data. Two or more diagnostic patch systems can communicate with each other. | 03-05-2009 |
20090069703 | SYSTEM FOR ARTIFACT DETECTION AND ELIMINATION IN AN ELECTROCARDIOGRAM SIGNAL RECORDED FROM A PATIENT MONITOR - A system eliminates artifacts from an electrocardiogram signal. The system includes a monitor for receiving an electrocardiogram signal from a patient and a microprocessor utilizing a shift-invariant wavelet transform for decomposing the electrocardiogram signal into a plurality of scales. The microprocessor applies rules to the scales for removing artifacts from the scales. The microprocessor reassembles the plurality of scales to produce a reconstructed and accurate electrocardiogram signal without the artifacts. | 03-12-2009 |
20090082681 | BIOLOGICAL INFORMATION PROCESSING APPARATUS AND BIOLOGICAL INFORMATION PROCESSING METHOD - A biological information processing apparatus obtains a pulse wave signal indicating a pulse wave of a subject, and acceleration measured according to body motion of the subject and calculates an amount of body motion of the subject using the acceleration. By using at least one of the body motion amount and the acceleration, the apparatus approximates a heart rate of the subject and sets a parameter to be used for detection of a pulse interval using the heart rate. Then, the apparatus detects each pulse interval using a pulse waveform indicated by the pulse wave signal and the parameter. | 03-26-2009 |
20090082682 | Methods and apparatus for detecting cardiac events based on heart rate sensitive parameters - A system for the detection of cardiac events occurring in a human patient is provided. At least two electrodes are included in the system for obtaining an electrical signal from a patient's heart. An electrical signal processor is electrically coupled to the electrodes for processing the electrical signal and applying tests to determine whether a cardiac event has occurred. When the processor detects some types of changes in heart rate, event detection is altered or suspended for a period of time. | 03-26-2009 |
20090082683 | Adapter device for physiological signals as well as magnetic resonance device therewith - An adapter device for physiological signals includes a signal input for a physiological signal transformed with a measuring unit according to its measurement. The signal input connects a converter unit for retransforming the transformed physiological signal in its electrical source characteristics, which it has on the measuring unit. A signal output connected to the converter unit is provided in order to output the retransformed signal. | 03-26-2009 |
20090088652 | Physiological sensor placement and signal transmission device - A garment is used to facilitate the placement of biomedical sensors or other electrodes on the body. The garment is comfortable and allows freedom of movement much like typical clothing. Textile based electrical components are included in the garment which are capable of transmitting an electrical signal to and from various external electrodes placed on the body. A textile based EMI shield protects the signals from electromagnetic interference. The garment may take any form such as a vest, sports bra, long sleeve shirt, bonnet, or other form and may provide access to an electrode placement site without requiring removal of the garment. | 04-02-2009 |
20090088653 | Device for detecting heartbeats of a person using cycles and training implements - A device for detecting pulsations or heartbeats of a person using cycles in general and movable and training implements, includes a plurality of detecting electrodes operating to contact the hands of the person and operatively coupled to at least a cardiac frequency meter, the electrodes being arranged on a cycle or training implement steering control element. | 04-02-2009 |
20090088654 | EKG measurement device - The invention relates to an EKG measurement device. The EKG measurement device comprises a number of EKG electrodes and a common-mode measurement unit connected on its input side to the EKG electrodes. Inventively an EKG trigger unit is connected on its input side to the EKG electrodes and to the common-mode measurement unit. | 04-02-2009 |
20090093730 | DEVICE FOR DETECTING AND TRANSMITTING ELECTRICAL PULSES - A device for detecting and transmitting electrical pulses from the body surface of a patient to device processing the electrical pulses. The device for detecting includes at least two electrical leads of different lengths, at least one electrical insulating material surrounding the at least two electrical leads, a connecting port for connection to the device for processing the electrical pulses at one end of the at least two electrical leads and a recess in the electrical insulating material of the at least two electrical leads, so that an electric contact can be established with the skin surface of the patient. The two leads of different lengths have a ratio of the electrical resistance to the length of the leads and/or the ratio of the impedance to the length of the leads that is/are greater in the shorter lead than in the longer lead. With the construction artifacts caused by external sources of interference are easily filtered out and it can be manufactured at a low cost, so as to be employed for disposable use. | 04-09-2009 |
20090093731 | CARDIAC RHYTHM MANAGEMENT SYSTEM WITH NOISE DETECTOR - A system, method, or device determines whether noise is present on a sampled and/or digitized sensed intrinsic cardiac signal based on a moving count of turning/inflection points of the signal. If noise is detected, the manner in which the cardiac signal is acquired, or the manner in which the device operates in response to the acquired cardiac signal (or both) is altered to reduce the risk of erroneously detecting noise as a heart depolarization and, therefore, inappropriately triggering or withholding therapy. | 04-09-2009 |
20090112105 | Portable Electrocardiogram - An apparatus for measuring cardiac electrical activity of a patient includes: a malleable pad, a first electrocardiogram electrode, and a ground electrode. The pad includes: a right handle for grasping with the patient's right hand, the right handle including an electrocardiogram electrode; a left handle for grasping with the patient's left hand, the left handle also including an electrocardiogram electrode; and an electronic circuit configured for receiving electrical signals from the electrodes and also configured to invert the signals from the electrodes for transmission to a processor to produce a graphic recording of the differences in electrical potential between the electrodes. The pad also includes a multiplex cable for coupling the electronic circuit to leadwires attached to the electrocardiogram electrodes; and a port configured for coupling with the processor. The first electrode and the handle electrodes form an inverted Einthoven triangle with the first electrode at an apex of said triangle, being located anatomically superior to the horizontal axis formed by the second and third electrodes. | 04-30-2009 |
20090112106 | Signal Analysis of Cardiac and Other Patient Medical Signals - A system and method provide detecting and monitoring cardiac electrophysiological changes by determining differences between a reference signal representing a heartbeat signal and an analysis signal representing another heartbeat signal. A set of signal data consisting of a number of heartbeat signals is acquired as a function of time. Individual heartbeat signals within the set of acquired signals are identified, an individual signal comprising data values representing a plurality of sample points during a single heartbeat. One of the identified individual signals or a derived signal representing an average of a subset of the identified individual signals is selected as an analysis signal. A reference signal is identified. The sample points of the reference signal are aligned with the sample points of the analysis signal. A single value representative of mutual correspondence between the sample points of the reference signal and the corresponding sample points of the analysis signal is calculated. Data indicating a calculated value is communicated to a destination for viewing by a user | 04-30-2009 |
20090112107 | Combining to a singularity plural-anatomical-site, heart-functionality measurements - Combining, to a singularity, from a plurality of anatomical sites, and over a plurality of heart cycles a collection of selected heart-functionality parameter measurements, such as EMAT, LVST, PADT, and AAFT measurements, including (a) collecting ECG and heart-sound data from plural anatomical sites, (b) computer processing such data to acquire plural, per-site, per-heart-cycle, nominal values for the selected parameter, (c) utilizing arithmetic mean and selected variance calculations related to such nominal values processing, and determined weight coefficients, computing weighted nominal values, (d) computing a weighted, nominal-value average of all of the nominal values by summing all of the weighted values and dividing that sum by the sum of all of the weight coefficients, and (e) presenting the computed weighted average as the combined, singularity value of the selected heart-functionality parameter. | 04-30-2009 |
20090118629 | RAPID METHOD FOR ANALYZING BIO-SIGNAL INSTANTANEOUSLY BY PHASE SPACE DIFFERENCE AND ITS DEVICE - The present invention relates to a method for analyzing bio-signal instantaneously by Chaotic Phase Space Difference (CPSD) operation and its measure analyze device. This method includes time-delay procedure and rebuilt phase space matrix to calculate chaos of phase space matrix and diagnose the bio-signal. This method can also be used as an analyze method in portable device or 24 h ECG recorder which is a fast and convenient measure analyze device. | 05-07-2009 |
20090143690 | Detection of ischemia - In an ischemia detection method, and in an ischemia detector and a cardiac stimulator embodying an ischemia detector, a workload of a patient is measured, as is an ejection fraction (EF) associated with the heart of the patient is determined. A predetermined reference relation between EF and workload for the patient is stored, and an analysis unit detects a state of ischemia of the patient from deviation in the determined EF for various workloads from the stored reference relation. | 06-04-2009 |
20090143691 | SYSTEM FOR, AND METHOD OF, MONITORING HEARTBEATS OF A PATIENT - Heart monitor signals indicating a patient's heart characteristics are amplified without affecting the signal characteristics. The amplified heart monitor signals with atypical characteristics are transmitted to a pattern recognition platform which stores the patient's previously provided signals with atypical characteristics. The patient's present and the previously provided signals with atypical characteristics are compared to select the previously provided signals with characteristics closest to those of the presently provided signals. Database signals identifying different types of heart problems in third parties and having characteristics closest to the patient's selected atypical signals are chosen. Dependent upon the severity of the patient's heart problems identified by the chosen database signals, the monitor transmits the chosen database signals to an individual one of the patient's doctor, the patient's hospital and an emergency facility. | 06-04-2009 |
20090156948 | HEART RATE METER AND HEART BEAT DETECTING METHOD - A heart rate meter includes a heart beat detecting unit for detecting a heart beat waveform of a living body and a signal processor | 06-18-2009 |
20090177100 | CARDIAC RHYTHM MANAGEMENT SYSTEM WITH EXERCISE TEST INTERFACE - This document discusses, among other things, cardiac rhythm management systems, devices, and methods providing an exercise test interface. A patient exercise episode is identified using at least one predetermined criteria. Data associated with the episode is obtained. A summary of the episode is displayed for a user. The displayed summary includes at least one prognostic indicator obtained from the data associated with the episode. Examples of prognostic indicators include, among other things, ectopic beats, runs of ectopic beats, rate of decrease of heart rate during a post-exercise recovery portion of the episode, a maximum attained heart rate for comparison to a maximum age-predicted heart rate, as well as other prognostic indicators. | 07-09-2009 |
20090182241 | Apparatus for sensing and processing electrical cardiac signals and method of remote sensing and processing of electrical cardiac signals - The present invention relates to an apparatus ( | 07-16-2009 |
20090192393 | DETERMINING LOCATIONS OF GANGLIA AND PLEXI IN THE HEART USING COMPLEX FRACTIONATED ATRIAL ELECTROGRAM - Software and apparatus are provided to automatically detect and map ganglionated plexi that are found within areas of complex fractionated electrograms in cardiac chambers. Electrogram signal are analyzed to count the number of complexes whose amplitude and peak-to-peak intervals meet certain criteria. Functional maps indicating a spatial distribution of the ganglionated plexi and the relative numbers of complex fractionated electrograms are produced for display. | 07-30-2009 |
20090192394 | Method and apparatus for predicting patient outcomes from a physiological segmentable patient signal - A method and apparatus for predicting patient outcome from a physiological segmentable signal of a patient. In one embodiment, the method comprises the steps of obtaining the physiological segmentable signal of the patient; segmenting the physiological segmentable signal into a plurality of separate segmentable components; calculating a time series of the morphological distance between adjacent separate segmentable components of the plurality of separate segmentable components; and predicting patient outcome in response to the time series of the morphological distance. In another aspect, the invention relates to a method for extracting information from physiological signals for one or more subjects including the steps of partitioning the physiological signal into a plurality of components, grouping the components into a plurality of information classes, assigning a unique symbol to each information class, mapping each component to the assigned symbol, and examining one or more such sequences for clinical significance. | 07-30-2009 |
20090192395 | SIGNAL COMPRESSION BASED ON CURVATURE PARAMETERS - For a sampled signal, storing characteristic points generated based on parameters corresponding to curvature of the signal. The characteristic points include a time of occurrence of a lobe in a curvature series based on the signal and a corresponding amplitude of the signal. The characteristic points provide a compressed version of the sampled signal. The signal is reconstructed by establishing a function between a chronological sequence of characteristic points. For a repetitive signal, the stored data includes a code to indicate a time of reoccurrence of a previous cycle or data corresponding to differences between a previous cycle and a current cycle. | 07-30-2009 |
20090209873 | HEARTBEAT MONITORING DEVICE, SYSTEM AND METHOD - A heartbeat monitoring device ( | 08-20-2009 |
20090216139 | METHOD FOR COLLECTING AND ASSIGNING PATIENT DATA IN A CLINICAL TRIAL - A method for assigning an ECG for purposes of conducting a clinical trial is disclosed herein. The method includes assigning an ECG to a primary reader, selectively reassigning the ECG to the primary reader, and selectively assigning the ECG to a secondary reader. The method also includes automating the assignment of the ECG to a primary reader, automating the selective reassignment of the ECG to the primary reader, and/or automating the selective assignment of the ECG to a secondary reader in order to minimize manual labor requirements. | 08-27-2009 |
20090216140 | DEVICE AND METHOD FOR THE ELECTRICAL MEASUREMENT OF BODY FUNCTIONS AND CONDITIONS - At an electric instrument used for the measurement of heart- and vascular function as well as body spaces, which is based on impedance measurement, the position of the electrodes, body volume and the volume of the segments located between the electrodes are measured with the help of a contactless measuring apparatus. The instrument comprises a plurality of electrodes capable of being attached to a body, a reference surface on which the body may be placed, and an electrical impedance meter capable of measuring the bodily functions of the body by measuring the electrical impedance and estimating the shape of the body by locating the electrodes attached to the body with reference to the reference surface, wherein the measured electrical impedance is associated with the estimated shape of the body segment. | 08-27-2009 |
20090216141 | Cardiac event detection over varying time scale - Disclosed is a “tracker system” that includes implanted electrical leads which are part of an implanted cardiotracker plus external equipment that includes external alarm means and a physician's programmer. The tracker system is designed to monitor the degradation of a patient's cardiovascular condition from one or more causes. These causes include the rejection of a transplanted heart and/or the progression of a stenosis in a coronary artery. As one or more stenoses in a coronary artery become progressively more narrow thereby causing reduced blood flow to the heart muscle coronary circulation, the tracker system can alert the patient by either or both internal and/or external alarm means to take the appropriate medical action. The physician's programmer can be used to display histograms of key heart signal parameters that are indicative of the patient's cardiovascular condition. | 08-27-2009 |
20090216142 | Apparatus for Measuring, Recording and Transmitting Electrocardiogram Measurements - Embodiments of the present invention include a monitoring device and method for measuring, recording and transmitting a pre-determined set of electrocardiogram measurements. The device provides for an unassisted six or twelve channel measurements of heart and vascular functions using a visual graphical output. Results of the measurements are charted and can be reviewed and analyzed by an authorized health care provider. | 08-27-2009 |
20090221925 | Microelectronic Device With Integrated Energy Source - An apparatus including an electronic device having a plurality of substantially collocated components, the plurality of components including an antenna, an energy supply and an integrated circuit chip. The integrated circuit chip is electrically coupled to the antenna and the energy supply. A material substantially encloses the electronic device. | 09-03-2009 |
20090227883 | AUTOMATED HEART FUNCTION CLASSIFICATION TO STANDARDIZED CLASSES - A system and method automatically classifies a patient's heart function status, such as by using an implantable medical device (IMD) to determine a physiological response to activity, and using that information to perform the classification. For example, a physical activity sensor and a physiological sensor are used to automatically classify patients into heart function status classes, such as NYHA classes or ACC/AHA classes. Changes in a patient's classification can be used to monitor heart function status over time and to monitor therapy responsiveness. | 09-10-2009 |
20090240156 | HIEARCHICAL COMMUNICATION SYSTEM FOR A CHRONICALLY IMPLANTED MEDICAL DEVICE - A system for providing alerts with regard to a patient's heart. An implanted medical device includes a sensor as well as a processor configured to detect a cardiac event. An internal alarm is configured for producing an alarm signal. An internal transceiver acting in cooperation with an external transceiver within an external device is provided. The processor is configured to determine whether the external and internal transceivers are able to communicate with each other and send a command to the internal alarm if there is no communication. | 09-24-2009 |
20090264780 | DELIVERY CATHETER INCLUDING SIDE PORT AND ELECTRODES - A delivery catheter, including a catheter body, a side port, a first electrode, and a second electrode, is described. The catheter body may comprise a proximal end, a distal end, and a perimeter surface. The catheter body defines a delivery lumen extending longitudinally within the catheter body. The side port is defined in the perimeter surface of the catheter body proximate the distal end and in communication with the delivery lumen. The electrodes may be adjacent to and spaced from the side port. Techniques for using the delivery catheter to identify a desired lead implantation location, e.g., via the electrodes, and implant a medical lead or other implantable element at the desired location through the delivery lumen and side port are also described. | 10-22-2009 |
20090264781 | METHOD AND DEVICE FOR DETERMINING AND PRESENTING SURFACE CHARGE AND DIPOLE DENSITIES ON CARDIAC WALLS - The invention discloses a method, a system, a computer program and a device for determining the surface charge and/or dipole densities on heart walls. Using the foregoing, a table of dipole densities ν(P′, t) and/or a table of surface charge densities ρ(P′, t) of a given heart chamber can be generated. | 10-22-2009 |
20090264782 | METHOD OF AND SYSTEM FOR SIGNAL SEPARATION DURING MULTIVARIATE PHYSIOLOGICAL MONITORING - Multiple electrode contacts make electrical connections to the anterior and/or posterior chest for multivariate characterization of the electrical activation of the heart. A central processing unit derives synthetic composite electrographic signals as well as flag signals for specific purposes. A preferred embodiment uses this system to trigger or gate magnetic resonance imaging, eliminating or reducing problems from small or inverted R-waves, lead detachment, noise, flow signal, gradient changes, and rhythm changes, more reliably flagging the onset of electrical activation of the ventricles. Additional derived data are ST-segment shifts, filling times, and respiratory cycle. Filling times may be used for greatly improved imaging in the presence of rhythm disturbances, such as atrial fibrillation. Respiratory cycle may be used as a respiratory trigger to control for the effects of breathing on the heart position and image quality. | 10-22-2009 |
20090270747 | Template Matching Method for Monitoring of ECG Morphology Changes - An implantable medical device and associated method perform ECG morphology monitoring. A subcutaneous ECG signal and a posture signal are sensed in a patient. A cardiac condition is detected in response to the ECG signal and the posture signal. In one embodiment, multiple ECG morphology templates corresponding to each of a number of different patient postures are acquired and stored for use in detecting a cardiac condition. | 10-29-2009 |
20090270748 | System and Method to Monitor Ejection Time and QT Interval to Alert Patients Before Syncopal Events - An implantable medical device and associated method predict syncope based on detecting a change in ejection time. A physiological signal is sensed that is responsive to mechanical changes associated with the cardiac ejection phase. A time interval corresponding to cardiac ejection time is detected from the physiological signal. A sudden change in the time interval is used as a predictor of syncope and causes a patient alert to be generated in response to the detected change. | 10-29-2009 |
20090275846 | Method of Medical Monitoring - The present invention relates to a method of medical monitoring, a medical monitoring system and a computer program to control a medical monitoring system. In order to provide an improved monitoring technique that allows a more effective recognition of monitored data a method of medical monitoring is suggested, the method using data collected by a number of sensors ( | 11-05-2009 |
20090275847 | Sleepiness level detection method and apparatus - A sleepiness level detection method of determining a sleepiness level of a subject, includes: detecting a heart beat signal indicating a signal of heart beats from the subject and storing the heart beat signal in a storage device; detecting amplitude peaks of the heart beat signal and detecting an interval between the amplitude peaks as a heart beat interval; and computing a spectral density corresponding to fluctuation in the heart beat interval detected and determining the sleepiness level based on a maximum frequency at which the spectral density is maximum. | 11-05-2009 |
20090281439 | NON-CONTACT CARDIAC MAPPING, INCLUDING RESOLUTION MAP - A non-contact cardiac mapping method is disclosed that includes: (i) inserting a catheter into a heart cavity having an endocardium surface, the catheter including multiple, spatially distributed electrodes; (ii) measuring signals at the catheter electrodes in response to electrical activity in the heart cavity with the catheter spaced from the endocardium surface; and (iii) determining physiological information at multiple locations of the endocardium surface based on the measured signals and positions of the electrodes with respect to the endocardium surface. Related systems and computer programs are also disclosed. | 11-12-2009 |
20090287103 | SYSTEMS AND METHODS FOR MONITORING PATIENT ACTIVITY AND/OR EXERCISE AND DISPLAYING INFORMATION ABOUT THE SAME - Patient activity and heart rate (HR) are monitored. For each of a plurality of time periods, periods of patient exercise and/or patient activity, if any, are detected based on the monitored patient activity and HR and an activity threshold. A cumulative duration of exercise and/or a cumulative duration of activity is/are determined for each time period, and the peak exercise HR for each period of patient exercise is detected. Information is stored, including duration information indicative of the cumulative duration of exercise and/or the cumulative duration of activity for each time period, and peak exercise information associated with the period of patient exercise during which the highest peak exercise HR occurred for each time period. The stored duration information, or information indicative thereof, are transferred from an implantable system to a non-implanted system so that a graphical representation of such information can be displayed and observed to evaluate exercise compliance and/or heart failure condition. | 11-19-2009 |
20090287104 | Method and Monitoring Device for Monitoring a Contacting of Electrodes of an ECG Measuring Device - A method for monitoring a contacting of electrodes of an ECG measuring devices is provided. At least three signals each from a first and a second input signal are generated. The first and the second input signal emanate from different electrodes and each electrode supplies one of the input signals to at least two of the signals generated by a first signal processing unit. The three signals are compared with a reference value. Inadequately contacted electrodes are identified based on the comparisons and are displayed. A monitoring device for implementing the method is provided. The monitoring device comprises a first signal processing unit connected to the electrodes at an input side, a second signal processing unit for identifying the inadequately contacted electrodes by receiving and processing at least three signals generated by the first signal processing unit, and a display unit for displaying the inadequately contacted electrodes. | 11-19-2009 |
20090287105 | NON-INVASIVE METHOD AND DEVICE TO MONITOR CARDIAC PARAMETERS - A method of and a device for non-invasively measuring the hemodynamic state of a subject or a human patient involve steps and units of non-invasively measuring cardiac cycle period, electrical-mechanical interval, mean arterial pressure, and ejection interval and converting the measured electrical-mechanical interval, mean arterial pressure and ejection interval into the cardiac parameters such as Preload, Afterload and Contractility, which are the common cardiac parameters used by an anesthesiologist. | 11-19-2009 |
20090299203 | HEART MONITORING APPARATUS - Heart monitoring apparatus with sensing stage connectable to intracardiac electrode picking up electric potentials and adapted to process electric signals representing a time course of said potentials, a mechanical action detection stage adapted to generate a geometry signal having a time course reflecting heart chamber's geometry change, an evaluation unit connected to sensing stage and impedance measuring stage and adapted to determine a first and second fiducial point in the time course of said potentials and geometry signal, respectively, both fiducial points belonging to same heart cycle, and to determine a measured time delay between said fiducial points. Evaluation unit adapted to repeat said determined time delay to determine plurality of measured time delays and variance thereof or divergence of the statistical properties of cycle times based on said time course of said electric potentials versus cycle times based on said time course reflecting a change of a heart chamber's geometry. | 12-03-2009 |
20090299204 | MOBILE- AND WEB-BASED 12-LEAD ECG MANAGEMENT - The present invention provides a mobile and web-based 12-lead ECG management information system for processing clinical 12-lead ECG, comprising: (a) a clinical device for automatically extracting a SCP-ECG or XML-ECG file and processing signals; (b) an ECG database for saving data exported from the clinical device with web-based user interface, and a mobile database which is synchronized with the ECG database; and (c) an interactive electric document for annotating 12-lead ECG with clinical diagnosis codes. | 12-03-2009 |
20090306526 | METHOD AND APPARATUS FOR AUTOMATIC ANALYSIS OF T-WAVE ALTERNANS - The invention disclosed includes a method and apparatus for calculation of T-wave alternas in electrocardiographic (ECG) signals; said method comprises the following method steps: (a) collecting and storing an ECG signal; (b) detecting each heartbeat T-wave in the ECG signal using an automatic detection and segmentation algorithm; (c) classifying said heartbeat T-wave as an even or odd heartbeat T-wave; (d) initializing said method by taking the first even and the first odd heartbeat T-wave as their respective initial average; (e) processing all the heartbeat T-waves in the ECG signal to generate an even heartbeat T-wave weighted average and odd heartbeat T-wave weighted average; and (f) calculating TWA using a distance metric between the even heartbeat weighted average and the odd heartbeat weighted average, said distance metric including curve matching Continuous Dynamic Time Warping (CDTW). | 12-10-2009 |
20090312656 | Electrostatic Discharge Protection For Wrist-Worn Device - Electro static discharge (ESD) protection is provided for electronic devices with integrated circuits, such as for example heart rate monitors. The ESD protection protects against voltage accumulation and discharge through device external parts that are connected to internal device circuitry. The ESD protection isolates the internal device circuitry and provides a low impedance path over which electro static charges and any transient voltages in the device may discharge. The integrated circuits, electrical components, and other parts protected from ESD may be connected to monitor circuitry and be externally exposed, such as sensing or measurement parts exposed outside the device. The external parts may include a sensing case back, sensing push-buttons, or other components that provide a signal to or are otherwise in communication with the internal device circuitry. | 12-17-2009 |
20090318820 | APPARATUS AND METHOD FOR IDENTIFYING MYOCARDIAL ISCHEMIA USING ANALYSIS OF HIGH FREQUENCY QRS POTENTIALS - Detecting cardiac ischemia by detecting local changes in high frequency ECG parameters. Local changes may be, for example, local reduction in RMS of high frequency components, for example, during a stress test. | 12-24-2009 |
20090318821 | Method for Checking ECG Signals and ECG Measuring Device - The invention relates to a method for checking ECG signals measured by an ECG measuring device having at least three electrodes for the presence of interference errors. At least three voltages are measured on a closed circulation path across the electrodes of the ECG measuring device. A monitoring value is calculated from the three measured voltages. A presence of an error is checked by determining a deviation of the monitoring value from a reference value. An error signal is outputted if an error is presented. The ECG measuring device has a further processing unit for processing voltage signals between a different pair of electrodes and a monitoring unit for calculating the monitoring value. | 12-24-2009 |
20090326398 | SENSING BIOLOGICAL DATA - A system is provided for obtaining and analyzing biological data of a subject. The system includes a biological data recording device that can sense biological signals of a subject over time and record the sensed biological signals as biological data. The system also includes an event time recording device that is physically separate from, and does not communicate with, the biological data recording device. The event time recording device includes a user actuatable component, and also includes a recording component that records user actuation data, which includes a time stamp indication as to when any instances of user actuation occurred. The system also includes equipment that can periodically receive the recorded biological data from the biological data recording device and the user actuation data from the event time recording device, and can correlate the biological data and the user actuation data to generate correlated biological data. | 12-31-2009 |
20090326399 | MAGNETIC FIELD SENSOR, SYSTEM AND METHOD FOR DETECTING THE HEART BEAT RATE OF A PERSON IN A VEHICLE, AND SYSTEM AND METHOD FOR DETECTING FATIGUE - A system for detecting the heart beat rate of a person in a vehicle, comprising: at least one magnetic field sensor ( | 12-31-2009 |
20090326400 | ECG ELECTRODE AND ELECTRODE SUPPORT - An electrically non-conductive back plate for supporting the back of a patient in a supine position comprises on its front face facing the back of the patient a pair or more of ECG electrodes capable of maintaining electrically conductive skin contact with the patient's back. The pair of ECG electrodes is disposed at a sharp angle with the mean heart vector, in particular so as to form an angle β of about 45°±25° with the projection S of the patient's spine on the back plate. Also disclosed is an ECG electrode for mounting in a recess of the back plate and an apparatus for treating cardiac arrest by compression of the sternum comprising the back plate. | 12-31-2009 |
20100004547 | ECG System for Use in ECG Signal Measurement of Intra-Cardiac ECG Using a Catheter - An ECG system is used in ECG signal measurement of intra-cardiac ECG using a catheter. The system includes a lead signal switch for disconnecting an amplifier input terminal from a reference point and reconnecting the input terminal to a patient limb electrode. An ECG signal processor amplifies the difference of a chest lead signal electronically connected to a catheter, and a patient limb signal provided by the reconnecting of the input terminal. | 01-07-2010 |
20100004548 | Processing of Biosignal - An apparatus for use in connection with biosignal measurement from the skin of a living object, comprising means for applying a test input impedance to the biosignal measurement, means for determining a response of a biosignal characteristics to the test input impedance, and means for setting a usage input impedance on the basis of the response. | 01-07-2010 |
20100004549 | SYSTEM AND METHOD OF SERIAL COMPARISON FOR DETECTION OF LONG QT SYNDROME (LQTS) - The present disclosure includes a system and method of detecting LQTS in a patient by comparing a collected set of ECG data from the patient to a plurality of databases of collected ECG data. The plurality of databases will include a database containing previous ECGs from the patient, a known acquired LQTS characteristics database, and a known genetic LQTS characteristics database. Comparing the patients ECG to these databases will facilitate the detection of such occurrences as changes in QT interval from success of ECGs, changes in T-wave morphology, changes in U-wave morphology and can match known genetic patterns of LQTS. The system and method is sensitive to patient gender and ethnicity, as these factors have been shown to effect LQTS, and is furthermore capable of matching a QT duration to a database of drug effects. The system and method is also easily integrated into current ECG management systems and storage devices. | 01-07-2010 |
20100010358 | System and Method For The Detection of Acute Myocardial Infarction - A system and method are provided for the detection of acute myocardial infarction (AMI) using a staged approach for accurate and rapid detection. Physiological signals in a patient's body are sensed and corresponding physiological parameters are derived in a staged approach in order to determine the probability that AMI is occurring in a patient in a first detection stage. If the computed probability from physiological signals indicates the possibility of AMI, then the patient is prompted, such as through a patient-wearable device, to answer specific AMI-related questions to assist in diagnosis of AMI in a second stage. AMI is detected when the computed probability in the second stage exceeds a predefined detection threshold. A patient or physician alert may then be generated, which may further include the transfer of data via a communication link or network, in response to an AMI detection signal. | 01-14-2010 |
20100016742 | System and Method for Monitoring, Measuring, and Addressing Stress - In accordance with one embodiment of the present invention, a method for quantifying stress is presented. The method includes interacting with an end user through a stress module and processing heart rate variance data collected during a stress test. The heart rate variance data may include a coherence attribute. The method further includes transmitting the heart rate variance data over a network and to a specified location. In more specific embodiments, the method includes delivering a numerical score to the end user. The score signifies a stress level for the end user. | 01-21-2010 |
20100016743 | Identifying Groups of Patients with Similar Physiological Characteristics and Risk Profiles - The invention relates in part to methods for partitioning a plurality of patients into risk profile groups comprising the steps of: recording a physiological signal from each patient of a plurality of patients; segmenting the physiological signal into a plurality of components for each patient of a plurality of patients; grouping the components into a plurality of information classes for each patient of a plurality of patients; assigning a representation to each information class for each patient of a plurality of patients; and grouping the patients in response to the representations of their respective information classes. | 01-21-2010 |
20100022902 | Virtual Physician Acute Myocardial Infarction Detection System and Method - A system and method for virtually detecting a medical condition, such as acute myocardial infarction (AMI), in a patient using holistic diagnostic procedures implemented in medical devices. Physiological parameters in a patient are monitored in an implantable medical device (IMD) to detect deviations from desired characteristics. When severe physiological parameter deviations exist indicating with a desired certainty that the patient is experiencing a medical condition (e.g., AMI), an alert is generated. If only minor deviations from the desired characteristics exist, additional holistic diagnostic procedures are performed virtually for diagnosing whether the patient is likely to be experiencing the medical condition, such as querying the patient through an external device regarding symptoms the patient is experiencing and analyzing the patient's responses to the questions to determine whether the patient is experiencing the medical condition. When diagnosis is still unclear, additional holistic diagnostic procedures can be performed virtually until diagnosis is certain. | 01-28-2010 |
20100022903 | SYSTEM AND METHOD FOR SIGNAL QUALITY INDICATION AND FALSE ALARM REDUCTION IN ECG MONITORING SYSTEMS - An electrocardiogram (ECG) monitoring system configured to determine an index that comprises a set of indicators, where each indicator is indicative of a level of signal quality in an ECG lead. Further, the ECG monitoring system assigns a first indicator from the set of indicators to a first ECG lead signal and communicates the first indicator to a user. | 01-28-2010 |
20100030092 | Adaptive Hypoglycaemia Alert System and Method - The onset or presence of a hypoglycaemic condition in a living being is estimated by obtaining ECG signals, which are processed together with secondary input, such as skin impedance, information about a condition of the living being, or blood glucose level, to estimate whether the living being is experiencing or approaching a hypoglycaemic condition. An output alert may be generated. Feedback indicative of a possible misestimate of the onset or presence of the hypoglycaemic condition is received to allow a system incorporating the invention to adapt and personalize to a specific living being. The feedback may influence one or more sensitivity or specificity settings. Settings of the system may be influenced by the location or rate of movement of the living being. | 02-04-2010 |
20100036270 | WIRELESS CARDIOGRAM SIGNAL DIAGNOSTIC INSTRUMENT - A wireless cardiogram signal diagnostic instrument includes a band, a signal transmitting device, two sets of connecting pieces, and a conductive assembly. The band has two opposite mounting portions separated by a distance. The two mounting portions are provided with the conductive assembly having a first conductive piece and a second conductive piece. The signal transmitting device is provided with a third conductive piece. The two sets of connecting pieces each have a first connecting piece that is conductive provided on the mounting portion of the band and a second connecting piece that is conductive provided on the signal transmitting device. The first connecting piece is correspondingly assembled with the second connecting piece, so that the signal transmitting device can be detachably assembled on the band. Via the above arrangement, the instrument can be worn on a user's chest to collect and measure the variation values of cardiogram voltages. | 02-11-2010 |
20100042008 | ECG Data Acquisition Device - An apparatus for generating ECG recordings and a method for using the same are disclosed. The apparatus includes a handheld device and a controller. The handheld device has first, second, third, and fourth electrodes on an outer surface of the handheld device. The controller records signals from the first, second, third, and fourth electrodes and generates an ECG recording from the signals. The controller also provides placement information regarding locations on a user's body that are to be brought into contact with the first, second, third, and fourth electrodes while the controller records the signals. The handheld device can include a cellular telephone or a PDA. The controller stores an exemplary normal ECG recording, and compares a newly generated ECG recording with the stored ECG recording and generates an indication that indicates whether the newly generated ECG recording is consistent with the stored ECG recording. | 02-18-2010 |
20100042009 | DEVICE FOR USING SAVED FREQUENCY INFORMATION - The invention relates to a device for applying saved frequency information in the form of modulated magnetic fields and/or modulated light to the body, wherein the device comprises at least one display, one memory, one control electronic, one D/A-converter, and a coil ( | 02-18-2010 |
20100049066 | DEVICE FOR JUDGING DEGREE OF AWAKENING AND METHOD FOR JUDGING DEGREE OF AWAKENING - A device for judging a degree of awakening and a method for judging a degree of awakening which can more reliably detect weak sleepiness of people in action. The device for judging a degree of awakening in accordance with the present invention comprises a heartbeat sensor for acquiring a heartbeat signal from a driver and an ECU for detecting sleepiness of the driver by processing the heartbeat signal. In the ECU, a heartbeat signal preprocessing section for acquiring a heartbeat period time series from the heartbeat signal, a feature amount extracting section for acquiring a heartbeat fluctuation low frequency component power from the heartbeat period time series, a sleepiness detecting section for judging whether sleepiness occurs in the driver or not according the heartbeat fluctuation low frequency component power, a stimulus timing setting section for setting a timing for imparting a stimulus for removing sleepiness to the driver according to the heartbeat fluctuation low frequency component power, and a sleepiness removing stimulus output section for imparting the stimulus to the driver at thus set timing. | 02-25-2010 |
20100049067 | SYSTEMS AND METHODS FOR QUANTIFYING AND PROVIDING INDICIA OF ST-SEGMENT RESOLUTION IN AN ECG SIGNAL - Systems and methods are provided for quantifying and providing indicia of ST-segment resolution in an electrocardiogram (ECG) signal. A receiver acquires an electrocardiogram (ECG) signal that includes an ST-segment. A processor processes the ECG signal to determine values for the ST-segment deviation relative to an isoelectric baseline. A user is allowed to provide a baseline signal to the processor. The processor responds to the baseline signal by marking a baseline ST-segment value corresponding to a baseline time. A user interface displays a linear graphical trend of variations in the measured ST-segment values relative to the baseline ST-segment value. In certain embodiments, the processor detects user-selected trigger events such as post-intervention ST deviation relative to the baseline time and the baseline ST-segment value, and provides indicia of the trigger event. In addition, or in other embodiments, a verbal annunciation of a percent ST-segment resolution is provided. | 02-25-2010 |
20100049068 | IN-VEHICLE ELECTROCARDIOGRAPH DEVICE AND VEHICLE - An in-vehicle electrocardiograph device includes: a direct electrode that is used to detect an electric potential of a body of a vehicle occupant in a state in which the direct electrode contacts a skin of the occupant; a capacitive-coupled electrode that is used to detect the electric potential of the body of the occupant in a state in which the capacitive-coupled electrode does not contact the skin of the occupant; and an electrocardiographic waveform determination unit that determines an electrocardiographic waveform of the occupant based on an electric potential at the direct electrode and an electric potential at the capacitive-coupled electrode. | 02-25-2010 |
20100056937 | HEARTBEAT DETECTING APPARATUS - A heart beat sensor ( | 03-04-2010 |
20100056938 | METHOD AND SYSTEM FOR SIGNAL SEPARATION DURING MULTIVARIATE PHYSIOLOGICAL MONITORING - Multiple electrode contacts make electrical connections to the anterior and/or posterior chest for multivariate characterization of the electrical activation of the heart. A central processing unit derives synthetic composite electrographic signals as well as flag signals for specific purposes. A preferred embodiment uses this system to trigger or gate magnetic resonance imaging, eliminating or reducing problems from small or inverted R-waves, lead detachment, noise, flow signal, gradient changes, and rhythm changes, more reliably flagging the onset of electrical activation of the ventricles. Additional derived data are ST-segment shifts, filling times, and respiratory cycle. Filling times may be used for greatly improved imaging in the presence of rhythm disturbances, such as atrial fibrillation. Respiratory cycle may be used as a respiratory trigger to control for the effects of breathing on the heart position and image quality. | 03-04-2010 |
20100056939 | METHOD OF BIOMEDICAL SIGNAL ANALYSIS INCLUDING IMPROVED AUTOMATIC SEGMENTATION - A method of analysing biomedical signals, for example electrocardiograms, by using a Hidden Markov Model for subsections of the signal. In the case of an electrocardiogram two Hidden Markov Models are used to detect respectively the start and end of the QT interval. The relationship between the QT interval and heart rate can be computed and a contemporaneous value for the slope of this relationship can be obtained by calculating the QT/RR relationship for all of the beats in a sliding time window based on the current beat. Portions of electrocardiograms taken on different days can efficiently and accurately be compared by selecting time windows of the ECGs at the same time of day, and looking for similar beats in those time windows. | 03-04-2010 |
20100063407 | PORTABLE ELECTROCARDIOGRAM MONITORING DEVICE - A portable electrocardiogram monitoring device comprises a case, at least two electrode lead patches, and an internal circuit provided inside the case for receiving a signal from the at least two electrode lead patches. The internal circuit comprises a power supply module and a data transmission module. The power supply module comprises a low-noise voltage stabilizing circuit having an independent first ground plane and a voltage regulation circuit having an independent second ground plane. The data transmission module comprises an operational amplifying circuit having an independent third ground plane and a data processing circuit having an independent fourth ground plane. And, the independent ground planes are connected with one another only by a ground channel. | 03-11-2010 |
20100069767 | SYSTEM AND METHOD FOR ANALYZING COMPLEX CURVATURE OF ECG CURVES - The present invention relates to a system and a method for analysis of ECG curvature, which system involves a mathematical analysis, which analysis comprises the following features where a number of different parameters are isolated and stored in computer means, where a first number of parameters are selected from at least one main group, where the selected parameters are combined in at least a first mathematical analysis. It is the object of the invention to improve mathematical analysis of ECG curvature particular for complex parts of the curvature such as notches or concavities. It is a further object of the invention to improve automatic quantification of symmetry, flatness and durations of ECG curvature. This can be achieved if the parameters are selected from groups of symmetry, flatness, duration and/or complexity, which parameters are used as input to an algorithm, where concavity intervals are evaluated on subsegments of the ECG segment and form the basis of up- and downwards concavity quantification, where the system based on an algorithm detects and quantifies concavity on ECG curvatures. Herby can be achieved that a complex curvature can be analysed and the complex curvature might indicate symptoms of diseases which are very difficult to read on ECG curvature by existing technology. This can lead to a more precise analysis where existing systems might by analysing the curvature give a first indication of a symptom. By then performing an analysis of the complex part of the curvature, further symptoms might be indicated. | 03-18-2010 |
20100076329 | Method for reducing baseline drift in a biological signal - The present invention relates to a computer-based method for reducing or eliminating baseline drift from a biological (bio) signal. The method includes the steps of dividing the bio signal into a plurality of shorter signals having fixed time intervals, fitting a baseline function to a baseline of each of the shorter signals, and subtracting each baseline function from a corresponding shorter signal, resulting in a bio signal with a flat baseline. | 03-25-2010 |
20100081949 | ECG LEAD-OFF DETECTION USING PHASE SHIFT OF RECOVERED TRANSTHORACIC IMPEDANCE RESPIRATION SIGNAL - A lead-off detector is disclosed for detection of a change of connection state of one or more of the electrical leads which are used to connect a physiological monitoring device, such as an Electrocardiogram (“ECG”) monitoring device, with the subject, e.g. patient, being monitored. The disclosed lead-off detector detects such changes rapidly and is not sensitive to electrical noise or thermal fluctuations. For example, the disclosed embodiments may detect disconnection and/or connection of one or more electrical leads and may further detect connection and/or disconnection of one or more electrical leads from the monitoring device, the subject, intervening coupling devices, or a combination thereof. In one embodiment, the disclosed lead-off detector is used in conjunction with a three lead ECG monitor with Transthoracic Impedance Respiration (“TIR”) functionality but may also be utilized with other types of physiological monitoring devices. The disclosed lead-off detector measures a phase difference between a signal transmitted to the subject and a signal received therefrom. Wherein the electrical leads are properly connected, the phase difference will be below a defined threshold. However, when one or more of the electrical leads becomes disconnected in some manner, the phase difference between the transmitted signal and the received signal will exceed the threshold. In an alternate embodiment, the clock frequency of the transmitted signal is further compared with the clock frequency of the received signal to detect transitions between the lead connection states and indicate a lead-off event so as avoid noise generated therefrom, referred to as “lead noise”, from being further processed. | 04-01-2010 |
20100081950 | ECG System and Method - The present invention relates to an ECG system, comprising an ECG apparatus ( | 04-01-2010 |
20100094148 | Differential apneic detection in aid of diagnosis and treatment - A computer-based detection method employable with a sleeping subject for aiding in the differential-character diagnosis and treatments of apneic events includes gathering heart-sound data, including S1 data and S2 data. A combined time-frequency-intensity (TFI) analysis, of the gathered data is performed, in a continuous manner, over a selected time period. Based on the performing and the performed TFI analysis, an output is produced which is indicative of the presence and character of any detected apneic event. | 04-15-2010 |
20100094149 | Noninvasive Ultrasound Cardiac Pacemaker and Defibrillator - A device for providing extracorporeal cardiac pacing. The device includes an ultrasound transducer mountable to the external thorax of a patient and an ultrasound generator for transmitting ultrasound pulses to the ultrasound transducer. The heart rate of a patient is monitored by the device. A controller evaluates the heartbeat as compared with threshold criteria for stimulation of the heart and causes the ultrasound generator to deliver ultrasound pulses to the ultrasound transducer at a prescribed intensity, frequency, and pulse duration. | 04-15-2010 |
20100094150 | Heart Rate Detection in High Noise Conditions - A method of processing heart monitoring samples is provided that includes computing a folded correlation value for each heart monitoring sample in a plurality of heart monitoring samples and identifying peaks corresponding to heartbeats based on the folded correlation values of the heart monitoring samples. | 04-15-2010 |
20100106033 | HEART MONITORING DEVICE AND METHOD - A heart monitor for processing input signals that represent periodically reoccurring events in a sequence of heart cycles. According to the invention graphical data representing a scatter plot of at least two dimensions, one dimension representing interval duration or its inverse and the other dimension representing change of duration or its inverse, respectively, are generated. The scatter plot comprises data points of which each data point represents heart interval duration or its inverse plotted against the change of duration with respect to a neighboring interval or the inverse of said change respectively. | 04-29-2010 |
20100106034 | Accessory for Performance-Monitoring Device - There is provided an electric apparatus for monitoring an electrocardiogram signal of a person, comprising an attaching mechanism configured to enable the attachment of the electric apparatus to a wearable item, first and second electrodes for electrical contact with the skin of the person, wherein, during operation, the first electrode is placed between the wearable item and the skin of the person and the second electrode is placed on the opposite side of the wearable item, a detector configured to detect the electrocardiogram signal between the two electrodes, and a transmitter configured to transmit wirelessly information regarding the electrocardiogram signal detected by the detector. | 04-29-2010 |
20100113950 | Seamlessly Embedded Heart Rate Monitor - This is directed to an electronic device having an integrated sensor for detecting a user's cardiac activity and cardiac electrical signals. The electronic device can include a heart sensor having several leads for detecting a user's cardiac signals. The leads can be coupled to interior surfaces of the electronic device housing to hide the sensor from view, such that electrical signals generated by the user can be transmitted from the user's skin through the electronic device housing to the leads. In some embodiments, the leads can be coupled to pads placed on the exterior of the housing. The pads and housing can be finished to ensure that the pads are not visibly or haptically distinguishable on the device, thus improving the aesthetic qualities of the device. Using the detected signals, the electronic device can identify or authenticate the user and perform an operation based on the identity of the user. In some embodiments, the electronic device can determine the user's mood from the cardiac signals and provide data related to the user's mood. | 05-06-2010 |
20100113951 | METHOD AND ATTENUATOR FOR DETECTION AND ITERATIVE ATTENUATION OF SPIKES IN COMPLEX SIGNALS - A method of attenuating spikes in a complex signal comprises examining the complex signal to detect spikes therein and for each detected spike, generating an estimate inverse signal and applying the estimate inverse signal to the complex signal to attenuate the spike associated with the estimate inverse signal. | 05-06-2010 |
20100113952 | Apparatus and method for the identification of fake fingerprints - An apparatus for identifying fake fingerprints has electrodes disposed along a platen surface of a fingerprint scanner and whether or not the skin of one or more fingers presented to the surface are real and alive is determined in accordance with analysis of electrical signals received from the electrodes. Electronics of the apparatus determines one or more liveness parameter(s) in accordance with signals received from electrodes. Information from an image of the fingerprint may be used to select which electrode signals to use for liveness detection. To further confirm the presence of a live finger(s), additional liveness parameter(s) of the pulse and/or temperature may also be sensed. The skin may be one of in contact with the platen of the fingerprint scanner, separated from direct contact with the platen's electrodes by an insulating layer or a pad, or not in physical contact with the platen or a pad thereupon. | 05-06-2010 |
20100125215 | SLEEP ANALYSIS SYSTEM AND METHOD FOR ANALYZING SLEEP THEREOF - The invention provides a sleep analysis system and a method for analysis thereof. The sleep analysis system includes an analysis device and a sleep sensing apparatus. The sleep sensing apparatus includes an ECG signal collector, a multi-axial accelerometer, a wireless transmitting unit, and a control unit. The ECG signal collector is used for collecting an ECG signal associated with a subject. The multi-axial accelerometer is used for detecting a multi-axial accelerometer signal associated with the subject. The control unit controls the wireless transmitting unit to transmit the ECG signal and the multi-axial accelerometer signal to the analysis device for analyzing sleep of the subject. | 05-20-2010 |
20100125216 | ACTIVITY MONITORING SYSTEM AND MONITORING DEVICE OF THE SAME - This invention relates an activity monitoring system and a device thereof. The device includes a global positioning system for providing a positioning information, a wireless communication module, a status sensor module including a multi-axle accelerating sensor and a heart rate variability sensor for sensing subject's activity status and bio-status so as to provide at least one activity information related to the subject and a microprocessor which is coupled to the global positioning system, the wireless communication module and the status sensor module, wherein the microprocessor controls the wireless communication module to send the positioning information and the at least one activity information to the remote host. | 05-20-2010 |
20100137726 | ELECTRODE DEVICE AND ELECTROCARDIOGRAPHIC MEASUREMENT DEVICE - A device for electrocardiogram measurement is provided, which is relatively not easily influenced by electrical activities of muscles, and which can perform electrocardiogram measurement during a measured person's daily life without removing clothes. The device includes a pair of lead electrode sections that are provided on a band section. Each of the pair of lead electrode sections includes a lead electrode that is disposed so that the lead electrode is positioned in the vicinity of a carotid artery of the measured person when the band section surrounds a neck portion of the measured person. The band section is configured to include a flexible band, and the band section detachably holds onto the neck portion of the measured person with nipping force arising from elastic deformation of the flexible band. | 06-03-2010 |
20100145202 | METHOD AND APPARATUS FOR DETERMINING INFORMATION CONCERNING THE IDENTITY OF AN INDIVIDUAL - A method of determining information concerning the identity of an individual comprising measuring at least one biometric of the individual comprising at least one bio-potential waveform generated by the individual's heart, extracting a plurality of characteristics from the bio-potential waveform comprising any of an approximate location of a point of a P peak, an approximate location of a Q-point of a QRS peak system, an approximate location of an R-point of a QRS peak system, an approximate location of an S-point of a QRS peak system, an approximate location of a point of a T peak, using the characteristics to calculate at least one waveform parameter, comparing at least one calculated waveform parameter with at least one previously-acquired waveform parameter to generate a score, and using the score to determine information concerning the identity of the individual. | 06-10-2010 |
20100145203 | MUSIC SELECTING SYSTEM AND METHOD THEREOF - The present invention relates to a music selecting system and method, and more particularly, to a technology that suitably determines an emotional quotient of user by preferably using a heart rate and biorhythm of user, and automatically selecting music of specific genre according to the determined emotional quotient, a current time and an age. | 06-10-2010 |
20100145204 | ALTERNANS AND PHARMACOLOGICAL AGENTS - First cardiac signal data generated from measured heart beats of a subject is received. Characteristics of alternans occurring in the received first cardiac signal data are determined. Second cardiac signal data generated from measured heart beats of the subject after a change relating to an administration of a pharmacological agent is received. Characteristics of alternans occurring in the received second cardiac signal data are determined. The characteristics of alternans occurring in the received first cardiac signal data are compared with the characteristics of alternans occurring in the received second cardiac signal data. | 06-10-2010 |
20100145205 | ANALYZING ALTERNANS FROM MEASUREMENTS OF AN AMBULATORY ELECTROCARDIOGRAPHY DEVICE - Cardiac signal data of heart beats measured with an ambulatory electrocardiography device is accessed. The cardiac signal data is segmented into cardiac signal data segments such that each cardiac signal data segment includes cardiac signal data of sequential heart beats. Whether alternans is present in the cardiac signal data segment is determined for each of multiple cardiac signal data segments. Characteristics of the alternans is determined by analyzing cardiac signal data segments for which alternans is determined to be present or by analyzing characteristics of cardiac signal data segments for which alternans is determined to be present. | 06-10-2010 |
20100152595 | AUTOMATED NOISE REDUCTION SYSTEM FOR PREDICTING ARRHYTHMIC DEATHS - Provided are methods, systems, and computer readable media for reducing noise associated with electrophysiological data for more effectively predicting an arrhythmic death. | 06-17-2010 |
20100152596 | APPARATUS FOR DETECTING THE POSITION OF A PERCUTANEOUSLY-INSERTED INTRAVENOUS CATHETER - Apparatus for Detecting the Position of a Catheter Apparatus for detecting the position of a catheter comprising a catheter, electrically conductive means associated with the catheter, a connector for establishing an electrical connection between the electrically conductive means associated with the catheter and an output of the connector and a controller having at least one output connectable to an ECG patient connector, wherein the controller includes at least one input and the said at least one input includes an electrical connection from the controller to the output of the connector and wherein the controller includes means for generating a low impedance output signal. | 06-17-2010 |
20100152597 | IMPLANTABLE TELEMETRIC DEVICE FOR HEART MONITORING - What is described is an implantable telemetric device for measuring the electromechanical parameters of the heart, characterized in that it comprises a single sensor ( | 06-17-2010 |
20100160803 | Multi-channel bio-med electric signals capturing device based on a sound signal generation - A multi-channel bio-med electric signals capturing device includes: a detection channel unit, a control unit, a voice signal generator and a computer device. The detection channel unit is provided to detect bioelectric signals produced from human body and amplify the same. The control unit is provided to capture the amplified bio-med electric signals based on a frequency conforming to a computer acceptable audient signal. The voice signal generator transmits the captured amplified bio-med electric signals to a microphone of the computer device, whereby a recording program built in the computer device records the input audient signal as a voice file. Accordingly, the user is able to monitor the bio-med electric signals by easily and simply using a computer device. | 06-24-2010 |
20100168593 | PORTABLE ELECTROCARDIOGRAPH - In a portable electrocardiograph ( | 07-01-2010 |
20100168594 | DETECTION METHOD FOR DETECTING QRS WAVE - A detection method for detecting a QRS wave is disclosed. An electrocardiogram (ECG) signal is provided. The ECG signal is enhanced to generate a processed signal. A first crest of the processed signal is determined. Each crest following the first crest is defined as a second crest. The level of each second crest is higher than a first threshold value. The result of defining the second crest is utilized to determine whether the QRS wave has occurred and approached a first crest. | 07-01-2010 |
20100168595 | BASELINE DRIFT CANCELING METHOD AND DEVICE - An embodiment of a baseline drift canceling method is provided. The method removes a baseline drift signal from a bioelectric signal, and includes the steps as follows: delaying the bioelectric signal by an analog time delay circuit to generate a first bioelectric signal; according to the bioelectric signal to generate a baseline drift signal; and acquiring a second bioelectric signal according to the first bioelectric signal and the baseline drift signal. | 07-01-2010 |
20100174203 | METHOD OF VENTRICULAR REPOLARIZATION ANALYSIS - While analyzing ventricular repolarization in accordance with the invention, ECG measurement with excitation of heart rate is evaluated and the coupling of an internal parameter, for example QT to heartbeat interval, for example RR, is modeled by a transfer function with three parameters. The values of the resulting five parameters describing the static and dynamic characteristics of ventricular repolarization are obtained by means of transfer function parameters and the measured values of heart rate and the internal parameter. The effect of medication is evaluated from the difference of the values of these parameters determined before and after administrating the medication. | 07-08-2010 |
20100174204 | EVENT DRIVEN AMBULATORY ELECTROCARDIOGRAPH - The electrocardiograph ( | 07-08-2010 |
20100179443 | Circuit and method for compensating for an electrode motion artifact - A circuit and method for compensating for an electrode motion artifact in which the electrode motion artifact is generated because impedance between a subject and a measuring electrode changes during measurement of the subject's biosignal, and the electrode motion artifact can be differentially measured and an electrocardiogram signal can be compensated by introducing a predetermined voltage or an electric current to the subject. A circuit and method for compensating electrode motion artifact, which can differentially measure the difference information between impedance components by introducing a predetermined voltage or electric current to a subject, in association with the electrode motion artifact. In this instance, the impedance component is a component of electrode motion artifact and the electrode motion artifact is generated when measuring a biosignal. | 07-15-2010 |
20100179444 | IMPLANTABLE MEDICAL DEVICE WITH ADAPTIVE SIGNAL PROCESSING AND ARTIFACT CANCELLATION - A medical device having a sensor sensing an n-dimensional signal during a first known variable condition and during a second known variable condition different from the first known variable condition, a processor performing principal component analysis (PCA) on the sensed n-dimensional signal to generate a first template corresponding to a principal component of variation associated with the first known variable condition and a second template corresponding to a principal component of variation associated with the second known variable condition, a storage device storing the first template and the second template, and a controller detecting a patient condition in response to the stored templates. | 07-15-2010 |
20100185107 | FLEXIBLY DEFORMABLE CABLE WITH TEXTILE COMPOSITE FOR ELECTROMEDICAL APPLICATIONS - A cable for electromedical application and especially for recording the ECG of patients of different body shapes and body sizes is provided including a textile composite ( | 07-22-2010 |
20100191130 | METHOD FOR DETECTING PATHOLOGIES USING CARDIAC ACTIVITY DATA - The invention relates to a method for determining a pathology in a subject, said method comprising: a) correlating N-N intervals with rate dependent fluctuations of electrocardiographic parameters derived from an electrocardiogram (ECG) of said subject or other recordings reflecting cardiac activity of said subject to derive electrocardiographic parameters correlation values, wherein said pathology is determined based on said correlation values. | 07-29-2010 |
20100191131 | METHOD OF NONINVASIVE ELECTROPHYSIOLOGICAL STUDY OF THE HEART - The invention relates to medicine, namely to cardiology, cardiovascular surgery, functional diagnosis and clinical electrophysiology of the heart. The invention consists in reconstructing electrograms, whose experimental registration requires an invasive access, by computational way on unipolar ECGs recorded at 80 and more points of the chest surface. Based on reconstructed electrograms, isopotential, isochronous maps on realistic models of the heart are constructed, the dynamics of the myocardium excitation is reconstructed and electrophysiological processes in the cardiac muscle are diagnosed. Application of the method allows one to improve the accuracy of non-invasive diagnosis of cardiac rhythm disturbances and other cardio-vascular diseases. | 07-29-2010 |
20100198089 | METHODS AND SYSTEMS FOR PUMPING FLUIDS - An electrocardiographic system, the electrocardiographic system includes: (i) a processor, adapted to receive three electrocardiographic signals and to provide a cardiological problem indication in response to the three electrocardiographic signals, wherein each of the three electrocardiographic signals is detected between a different pair of electrodes out of a electrode group that consists of three electrodes located on a body of a patient; and (ii) an interface, adapted to transmit the cardiological problem indication received from the processor. | 08-05-2010 |
20100198090 | Method, System and Computer Program Product for Controlling Complex Rhythmic Systems - A method, apparatus, and computer program product for controlling the behavior of complex rhythmic systems, such as the nervous system, is disclosed. Robust, engineering based measurements of the rhythmic system are taken and used to generate feedback that guides the system towards a desired state. This methodically designed feedback allows the system to maintain the normal behavior of individual elements, thereby achieving high effectiveness, while at the same time minimizing side effects. It therefore becomes possible to move the system towards the desired state in a non-destructive manner. This approach also allows for increased flexibility and applicability because the feedback is generated in a manner that is tailored to the unique variables of the particular system. | 08-05-2010 |
20100198091 | Multi-Tier System for Cardiology and Patient Monitoring Data Analysis - In a multi-tier patient monitoring data analysis system, an algorithm server is positioned as a middle tier between an acquisition device, such as a cardiograph or patient monitor that can be seen as a lower tier, and a storage device for a database, such as that of a central computer for a hospital or clinic that can be seen as an upper tier. The algorithm server gathers current data from the real time acquisition device and obtains previously stored ECG signal data from the database. The algorithm server contains ECG analysis algorithm(s) and runs one or more algorithms using the current and previously acquired ECG signal data. Analysis algorithms may also be run on the acquisition device. The system provides the rapid, extensive, and thorough ECG analysis that is critical to patient welfare. | 08-05-2010 |
20100204594 | MONITORING SYSTEM - A monitor comprises a pad having an airtight interior cavity, a pressure transducer, two filtering circuits, a controller, a set of lights and a speaker. An entity sits, lies on, or otherwise applies a force to the pad, which causes a change in pressure within the airtight cavity. The pressure transducer, in communication with the pad, measures the change in pressure and outputs an electrical signal indicative thereof. The filtering circuits filter the output of the transducer to create a signal indicative of breathing of the entity applying force to the pad and a signal indicative of the pulse of the entity applying force to the pad. A controller uses the output of the filters to determine whether the entity is experiencing a breathing condition and/or heart condition. The controller actuates lights, speakers and/or other output devices to report the sensed conditions. | 08-12-2010 |
20100204595 | Heart monitoring system for treating a condition of a user - A system and method for facilitating treatment of a condition of a user, at least one symptom of the condition including an abnormal heart rate, is disclosed herein. A heart rate monitor measures one or more heart rate parameters of the user. A processor receives the parameters from the heart rate monitor and compares the parameters with threshold values in associated data storage and transmits a signal if the parameters exceed one or more of the threshold values. An audio device and a tactile device receive the signal from the processor. Responsive to the signal, the audio device provides an audible sound to the user, while the tactile device provides a tactile sensation to the user. The audible sound and tactile sensation are adapted to treat the user's condition, alleviate symptoms of the condition, or combinations thereof. | 08-12-2010 |
20100204596 | METHOD AND SYSTEM FOR PROVIDING REMOTE HEALTHCARE - A method and system are adapted to provide healthcare to a patient. A portable registration device having a navigation function is provided. The registration device records health information of the patient. The health information is then automatically stored in a database that forms a digital medical journal. A medical professional activates the medical journal to retrieve the recorded health information. The medical professional prepares a diagnosis and treatment based on the health information stored in the on-line database. | 08-12-2010 |
20100217140 | METHOD, APPARATUS AND SYSTEM FOR PREDICTING ELECTROMECHANICAL DISSOCIATION - A method of predicting onset of electromechanical dissociation in a heart of a subject is disclosed. The method comprises: extracting from the composite input signal an electrocardiac signal and determining electrical activity of the heart based on the electrocardiac signal; extracting from the composite input signal a radiofrequency signal and determining blood flow measure based on the radiofrequency signal; and if the blood flow measure is below a predetermined threshold and the electrical activity is above a predetermined threshold, then predicting the onset of electromechanical dissociation. | 08-26-2010 |
20100222688 | Means and method for the detection of cardiac events - Disclosed is a system for the detection of cardiac events that includes an implanted device called a cardiosaver, a physician's programmer and an external alarm system. The system is designed to provide early detection of cardiac events such as acute myocardial infarction or exercise induced myocardial ischemia caused by an increased heart rate or exertion. The system can also alert the patient with a less urgent alarm if a heart arrhythmia is detected. Using different algorithms, the cardiosaver can detect a change in the patient's electrogram that is indicative of a cardiac event within five minutes after it occurs and then automatically warn the patient that the event is occurring. To provide this warning, the system includes an internal alarm sub-system (internal alarm means) within the cardiosaver and/or an external alarm system (external alarm means) which are activated after the ST segment of the electrogram exceeds a preset threshold. | 09-02-2010 |
20100222689 | Cooperative Processing with Mobile Monitoring Device and Computer System - An arrangement includes a mobile device executing a process to detect an episode in electrical signals representative of a beating heart. The mobile device determines that the detected episode is a notable finding and sends data corresponding to the notable finding to a second system. The second system analyzes the data corresponding to the notable finding using one or more additional computing resources. | 09-02-2010 |
20100228138 | SYSTEM AND METHOD FOR SCANNING THE HEART - A system and method of testing a patient for coronary disease in the patient's heart is disclosed that comprises a microprocessor which contains a signal processor and a pattern recognition processor; means to detect the electrical signals of the heart whereby the signals are processed to create a pattern that represents the patient's heart. The pattern may be further processed by repeatedly comparing it to patterns stored within the pattern recognition processor whereby certain coronary diseases such as myocardial ischemia in the patient's heart may be diagnosed. During each heartbeat, at least a million different electrical impulses are collected and the results of the test are displayed on a screen. The results may include the diagnosis, computer generated image of the patient's heart identifying areas of any coronary disease that has been detected and/or a two dimensional waveform representing the electrical impulses of the patient's heart will be shown. In a further embodiment, the system will also generate ECG waveforms. to create vectors which represent the different directions of the muscle activity of the heart. | 09-09-2010 |
20100228139 | LIVING BODY INSPECTION APPARATUS, AND RELEVANT METHOD AND PROGRAM PRODUCT - In a living body inspection apparatus to inspect RLS (Restless Legs Syndrome), a pulse interval is obtained from a pulse wave signal, thereby performing a frequency analysis of the obtained pulse interval using COM. From a result of the frequency analysis, the low frequency components ranging from 0.04 to 0.15 Hz and the high frequency components ranging from 0.15 to 0.4 Hz are extracted. As an index posterior to an age amendment, low frequency components (LF)/high frequency components (HF) is obtained, for instance. It is then determined whether LF/HF is equal to or greater than a predetermined determination value indicating RLS. For example, it is determined whether LF/HF is equal to or greater than 0.65, which suspects RLS. It is determined whether a signal is accurately calculated which indicates an activity of autonomic nerve. A state of RLS is determined using LF/HF. | 09-09-2010 |
20100234745 | PORTABLE ELECTROCARDIOGRAPH - A portable electrocardiograph ( | 09-16-2010 |
20100234746 | SYSTEM AND METHOD FOR WIRELESS GENERATION OF STANDARD ECG LEADS AND AN ECG SENSING UNIT THEREFOR - A system for wireless generation of at least one standard ECG lead comprises a plurality of electrodes for application to a subject at separate points thereof and a remote receiver station for generating at least one standard ECG lead from signals detected by a first group of said plurality of electrodes. The system further comprises a wireless sensing unit for generating at least two non-standard ECG signals from bipolar signals detected by a second group of the plurality of electrodes, a processor in the remote receiver station for calculation of a transform synthesizing each generated standard ECG lead from at least two of the non-standard ECG signals, a disconnection unit for disconnection of the first group of electrodes from the subject following the calculation, and a transfer unit for wireless transferring of the non-standard ECG signals to the remote receiver station following the disconnection of the first group of electrodes. | 09-16-2010 |
20100234747 | SLEEPINESS JUDGING DEVICE - The object is to provide a drowsiness detecting device for detecting strong drowsiness to become a dozing state. A drowsiness detecting device comprises a sympathetic parameter acquiring unit for acquiring a parameter concerning a sympathetic nerve of a subject, a parasympathetic parameter acquiring unit for acquiring a parameter concerning a parasympathetic nerve of the subject, a sympathetic increase determining unit for determining whether the sympathetic parameter is greater than a sympathetic threshold or not, and a drowsiness determining unit for determining drowsiness of the subject according to an increase/decrease relationship between the sympathetic and parasympathetic parameters when the sympathetic increase determining unit determines that the sympathetic parameter is greater than the sympathetic threshold. | 09-16-2010 |
20100234748 | METHOD, SYSTEM AND COMPUTER PROGRAM METHOD FOR DETECTION OF PATHOLOGICAL FLUCTUATIONS OF PHYSIOLOGICAL SIGNALS TO DIAGNOSE HUMAN ILLNESS - Method, system, and computer program method for detecting pathological fluctuations of physiological signals to diagnose human illness. The method comprises performing a sliding window analysis to find sequences in physiological signal data that match amplitude- and duration-adjusted versions of a template function to within a specified tolerance. | 09-16-2010 |
20100234749 | SYSTEM AND METHOD FOR COMBINING SERIAL ECG ANALYSIS AND ECG ORDERING - A system and method for receiving a request for a test to be performed on a patient, retrieving information about the patient, receiving further information about the test after the test is performed and comparing the information to the further information. In addition, a system having an input device for receiving a request for a test to be performed on a patient and a management system configured to retrieve information corresponding to the patient, combine the received request and the retrieved information into a modified request, and forward the modified request to a device performing the test. | 09-16-2010 |
20100241017 | SYSTEM AND METHODS FOR THE SELECTIVE UPDATING OF HEART SIGNAL PARAMETER TIME SERIES - A heart rate monitor is disclosed. The monitor generates an ST deviation time series by employing a recursive filter that is preferably an exponential average filter whose output is a weighted sum of the then existing ST time series value and current ST deviation values of analyzable beats, seats are detected in segments of data. ST deviation is measured for analyzable beats. The ST deviation time series is updated only if certain criteria are met. A first criterion for updating the time series is that at least half of the beats within a segment must be normal sinus rhythm beats: A second criterion for updating the time series is that (i) the average RR interval of the segment is between ¾ and 1.5 times the average RR interval of the previous segment; or (ii) both (a) the number of abnormal beats in the current segment is less than 2, and (b) the number of premature ventricular contractions within the current segment is less than 2. | 09-23-2010 |
20100249622 | LOCATION AND DISPLAYING AN ISCHEMIC REGION FOR ECG DIAGNOSTICS - A method for locating an ischemic region in the heart of a subject includes establishing three dimensional coordinates axes with respect to the torso of the subject as a reference; establishing as a reference a multi-dimensional representation of the heart defining at least three dimensional coordinate axes of the heart, the multi-dimensional representation defining at least the base of the heart and a middle section of the heart to thereby prescribe a surface of the heart on the reference multi-dimensional representation of the heart; and orienting the three dimensional coordinate axes of the heart from an initial position offset with respect to the three dimensional coordinates with respect to the torso of the subject to an imaginary position wherein at least one axis of the heart is parallel to or coincident with at least one of the three dimensional coordinate axes with respect to the torso of the subject. Corresponding displays are disclosed also. | 09-30-2010 |
20100249623 | Non-linear filtering for the reconstruction of a surface Electrocardiogram from an endocardial electrogram - An active medical device using non-linear filtering for the reconstruction of a surface electrocardiogram (ECG) from an endocardial electrogram (EGM) is disclosed. The device for the reconstruction of the surface ECG comprises: a plurality of inputs, receiving a corresponding plurality of EGM signals from endocardial or epicardial electrogram (x | 09-30-2010 |
20100249624 | DEVICE FOR ANALYZING QUALITY OF SLEEP - The present invention relates to a device for analyzing quality of sleep, which contains multiple electrode patches attached to human body and an electro-cardio measurement unit connected with the electrode patches. The device of the present invention provides an electro-cardio signal by the multiple electrode patches attached to human body and analyzes the electro-cardio signal by an analyzing unit to know the quality of sleep. | 09-30-2010 |
20100262026 | SLEEP POSITION DETECTION - A method of determining body position uses ECG sensors at fixed positions, not fixed to the patient. The ECG signals recorded from the sensors are used to detect body position, using the variation of ECG potential over the surface of the body. The results may be processed by measuring artefacts related to the angle between the sensors and the heart, in particular the polarity of the QRS complex. The sensors may be fixed on the upper surface of a bed and used to measure sleep position. | 10-14-2010 |
20100262027 | Method and Arrangement to Predict at Least One System Event and a Corresponding Computer Program and a Corresponding Machine-Readable Storage Medium - A method, a system and an arrangement to predict at least one system event and a corresponding computer program and a corresponding machine-readable storage medium are configured so that the event is predictable because of trends in observables over a certain period before the occurrence of the events. The method, system and arrangement can be used in particular for patient-specific monitoring of patho-physiological changes but also in geophysical or abstract units such as population or economic systems in which the deviation from a defined normal condition is predicted. | 10-14-2010 |
20100268101 | METHOD AND APPARATUS FOR MEASURING BLOOD VOLUME - A method of measuring a blood volume, includes: reading individual specific information of a patient; estimating oxygen metabolism relating to a cardiac output of the patient; and acquiring the cardiac output based on the estimated oxygen metabolism. | 10-21-2010 |
20100280399 | METHOD OF AND APPARATUS FOR GENERATING A MODEL OF A CARDIAC SURFACE HAVING A PLURALITY OF IMAGES REPRESENTING ELECTROGRAM VOLTAGES - A method of generating a model of a cardiac surface having a plurality of images representing electrogram voltages for a plurality of measured points within a heart comprises measuring an electrogram voltage at a plurality of points within a heart, generating a first model of a cardiac surface of the heart, generating an image representing each electrogram voltage, each image having a characteristic representative of the electrogram voltage, and generating a further model of a cardiac surface. The images representing the electrogram voltages protrude from the further model of the cardiac surface at points on the further model corresponding to the points at which the electrogram voltages were measured. There is also disclosed an apparatus for generating a model of a cardiac surface. | 11-04-2010 |
20100286540 | IMPLANTABLE P-WAVE DISPERSION DETECTOR - An electromedical implant, having
| 11-11-2010 |
20100292594 | LIE DETECTION METHOD AND SYSTEM - The present disclosure provides an HRV analysis-based method of lie detection, related computer program product, computer readable storage medium and system. Also provided is a method of HRV analysis using strange entropy. | 11-18-2010 |
20100292595 | Electrocardiographic Device and Method - A hand-held device for acquiring electrocardiographic (ECG) signals from a patient comprises an electrode array with a gripping handle ( | 11-18-2010 |
20100305460 | APPARATUS, METHOD AND COMPUTER PROGRAM FOR MEASURING PROPERTIES OF AN OBJECT - The invention relates to an apparatus for measuring properties of an object ( | 12-02-2010 |
20100305461 | ELECTROCARDIOGRAPH WITH EXTENDED LEAD FUNCTION, AND EXTENDED LEAD ELECTROCARDIOGRAM DERIVING METHOD - There are provided an electrocardiograph with an extended lead function and an extended lead ECG deriving method capable of easily deriving an ECG signal of an extended lead ECG by an arithmetic operation, based on ECG signals of a standard 12-lead ECG measured by a potential detector | 12-02-2010 |
20100317980 | METHOD AND DEVICE FOR USING A PHYSIOLOGICAL PARAMETER TO EXPRESS EVOLUTION - A method for presenting a bioorganism's evolutionary passage through at least a portion of its life, by reference to a selected physiological parameter emanating from the bioorganism, as an alternative to use of conventional horology, which includes selecting a physiological parameter specific to the bioorganism itself, one which continuously and repeatedly occurs, for the most part involuntarily, throughout and only throughout the bioorganism's life, and then detecting the repeated occurrences generated by the parameter. | 12-16-2010 |
20100317981 | Catheter Tip Positioning Method - A computer-based method for positioning an endovascular device in or near the heart using electrocardiogram (ECG) signals is provided. The computer-based method includes receiving an endovascular ECG signal, associated with an endovascular device, including a plurality of waveforms, each waveform having at least a P-wave component, processing the endovascular ECG signal, over a plurality of predetermined time periods, to calculate a P-wave amplitude and a spectral power for each predetermined time period, determining a maximum P-wave amplitude from the plurality of P-wave amplitudes, and an associated maximum spectral power from the plurality of spectral powers, associating the maximum P-wave amplitude and the maximum spectral power with a predetermined location in or near the heart, calculating a location of the endovascular device, for each predetermined time period, based on a ratio of the P-wave amplitude to the maximum P-wave amplitude and a ratio of the spectral power to the maximum spectral power, and displaying the location of the endovascular device to a user. | 12-16-2010 |
20100324433 | MEDICAL PROCEDURE MAT AND DRAPING SYSTEM - A medical procedure mat for supporting a patient. A mat having a cushioned substrate and one or more physiological monitoring lines, the physiological monitoring lines having guided portions along the outer edge of the cushioned substrate, and flexible portions operatively coupled to the guided portions, the flexible portions being adapted to extend toward the patient. A draping system for use during medical procedures, including a top and/or bottom drape. A bottom drape including an absorbent material and/or a privacy shield. A top drape including a workbench surface. A mat and draping system in which a bottom and top drape mate to each other and/or to the mat. A draping system providing openings or holes to allow passage of one or more physiological monitoring lines when used in conjunction with the mat. | 12-23-2010 |
20100324434 | METHOD AND DEVICE FOR ASSISTING IN DETERMINATION OF THE SUITABILITY OF A PATIENT FOR A SCAN OF THE PATIENT'S HEART USING AN X-RAY COMPUTER TOMOGRAPH AND METHOD AND X-RAY COMPUTER TOMOGRAPH FOR SCANNING THE HEART OF A PATIENT - A method is disclosed for assisting in determination of the suitability of a patient for a scan of the heart of the patient using an X-ray computer tomograph. In at least one embodiment of the method, a) an electrocardiogram of the patient is recorded; b) the electrocardiogram is evaluated by predicting the occurrence time of at least the immediately following R wave on the basis of at least four immediately consecutive R waves of the electrocardiogram which were measured last, and comparing this with the actual measured occurrence time of the next R wave; and c) wherein the quality of the prediction is visualized qualitatively. Further, in at least one embodiment, a device is disclosed including an ECG instrument and a computation device for carrying out the method. At least one embodiment of the invention furthermore relates to a method and a device for scanning the heart of a patient on the basis of a prediction of R waves. | 12-23-2010 |
20100331711 | Method and device for deriving and evaluating cardiovascular information from curves of the cardiac current, in particular for applications in telemedicine - The invention relates to a method and a device for deriving and evaluating cardiovascular information from curves of the cardiac current, in particular for applications in telemedicine. According to the invention, for data reduction purposes, a mean value and a standard deviation across the whole recording time are initially determined from a recorded ECG from the high-resolution signal, after which the RR intervals are assessed by means of an identification algorithm and only the results obtained are transmitted and/or recorded, for the purpose of data reduction. | 12-30-2010 |
20100331712 | METHOD OF LOCATING THE TIP OF A CENTRAL VENOUS CATHETER - A method of locating a tip of a central venous catheter (“CVC”) having a distal and proximal pair of electrodes disposed within the superior vena cava, right atrium, and/or right ventricle. The method includes obtaining a distal and proximal electrical signal from the distal and proximal pair of electrodes and using those signals to generate a distal and proximal P wave, respectively. A deflection value is determined for each of the P waves. A ratio of the deflection values is then used to determine a location of the tip of the CVC. Optionally, the CVC may include a reference pair of electrodes disposed within the superior vena cava from which a reference deflection value may be obtained. A ratio of one of the other deflection values to the reference deflection value may be used to determine the location of the tip of the CVC. | 12-30-2010 |
20110004110 | Personalized Monitoring and Healthcare Information Management Using Physiological Basis Functions - Analysis of individual's serial changes, also referred to as the physiological, pathophysiological, medical or health dynamics, is the backbone of medical diagnosis, monitoring and patient healthcare management. However, such an analysis is complicated by enormous intra-individual and inter-individual variability. To address this problem, a novel serial-analysis method and system based on the concept of personalized basis functions (PBFs) is disclosed. Due to more accurate reference information provided by the PBFs, individual's changes associated with specific physiological activity or a sequence, transition or combination of activities (for example, a transition from sleep to wakefulness and transition from rest to exercise) can be monitored more accurately. Hence, subtle but clinically important changes can be detected earlier than using other methods. A library of individual's PBFs and their transition probabilities (which can be described by Hidden Markov Models) can completely describe individual's physiological dynamics. The system can be adapted for healthcare information management, diagnosis, medical decision support, treatment and side-effect control. It can also be adapted for guiding health, fitness and wellness training, subject identification and more efficient management of clinical trials. | 01-06-2011 |
20110009758 | SYSTEM AND METHOD FOR HEART MONITORING - Disclosed are systems and methods for monitoring a heart. According to one embodiment, the system includes a registering unit positioned external to the patient's body. The registering unit comprises a first controller configured to register an electrical signal from the heart. The system includes a second controller in operable communication with the first controller. The second controller is configured to receive the data from the first controller corresponding to the registered electrical signal and to compare the registered electrical signal to a baseline electrical signal to determine whether the heart is functioning properly. | 01-13-2011 |
20110015532 | Denoising and Artifact Rejection For Cardiac Signal in a Sensis System - A system denoises and rejects artifacts from cardiac signals, by accepting a cardiac signal from a patient, processing the cardiac signal from the patient using a frequency band width controllable choke to separate the cardiac signal into predefined frequencies, filtering each of the predefined frequencies to remove dynamic common noise, joining each of the predefined frequencies into a cardiac signal without the dynamic common noise, and providing feedback control of the filtering of each of the predefined frequencies. | 01-20-2011 |
20110015533 | STYLETS FOR USE WITH APPARATUS FOR INTRAVASCULAR PLACEMENT OF A CATHETER - An integrated catheter placement system for accurately placing a catheter within a patient's vasculature is disclosed. In one embodiment, the integrated system comprises a system console, a tip location sensor for temporary placement on the patient's chest, and an ultrasound probe. The tip location sensor senses a magnetic field of a stylet disposed in a lumen of the catheter when the catheter is disposed in the vasculature. The ultrasound probe ultrasonically images a portion of the vasculature prior to introduction of the catheter. ECG signal-based catheter tip guidance is included in the integrated system to enable guidance of the catheter tip to a desired position with respect to a node of the patient's heart. Stylets and catheters including various multiple bipolar and monopolar electrode configurations are also disclosed. | 01-20-2011 |
20110034815 | Method and System for Use in Monitoring Left Ventricular Dysfunction - A method and system are presented for use in determining a patient's heart condition. First and second data are provided, where the first data is indicative of the patient's heart rate, and the second data is indicative of bioimpedance peak value during a cardiac cycle. A relation between a certain predetermined value and a product of the first and said second data is determined, where such relation is indicative of the patient's left ventricular condition, enabling to identify a left ventricular dysfunction. | 02-10-2011 |
20110034816 | ECG Rhythm Advisory Method - A method of automatically determining which type of treatment is most appropriate for a cardiac arrest victim, the method comprising transforming one or more time domain electrocardiogram (ECG) signals into a frequency domain representation comprising a plurality of discrete frequency bands, combining the discrete frequency bands into a plurality of analysis bands, wherein there are fewer analysis bands than discrete frequency bands, determining the content of the analysis bands, and determining the type of treatment based on the content of the analysis bands. | 02-10-2011 |
20110040197 | WIRELESS PATIENT MONITORING SYSTEM - A device for obtaining physiological information of a medical patient can include a blood pressure device that can be coupled to a medical patient and a wireless transmitter electrically coupled with the blood pressure device. The wireless transmitter can wirelessly transmit blood pressure data received by the blood pressure device and physiological data received from one or more physiological sensors coupled to the blood pressure device. | 02-17-2011 |
20110040198 | Invasive Cardiology Digital Signal Amplifier and Acquisition Device - The digital signal amplifier and acquisition system includes at least one catheter input module (CIM) configured to receive, route and digitize incoming analog cardiac signals from a number of catheters, as well as outgoing stimulator pulses. A plurality of CIMs are mechanically stacked and electrically daisy-chained and coupled with a mounting. The mounting platter is clamped to the bedrail and provides a single digital output cable to the base. The system also includes an acquisition device and the aforementioned base, which is configured to collect, filter and distribute the acquired data. Lastly an analog output module receives filtered digital signals from the base and is configured to reconstruct analog representations of such filtered digital signals for outside devices. | 02-17-2011 |
20110054334 | Alarm testing and backup for implanted medical devices with vibration alerts - Alarm tests are disclosed which use alarm test signals to assess alarms provided by medical devices. Especially relevant are implanted devices that monitor cardiac activity and provide notification in response to medically relevant events. Alarm tests can occur periodically, or in response to a patient, doctor, or remote party initiating the alarm test. Alarm tests can also occur during the actual alarms issued to detected medical events. Alarm tests lead to pass or fail results, which in turn may cause operations to contingently occur. Alarm test failure in the auditory, visual, or tactile modality, may cause an alternatively defined alarm signal to be used as back-up. Alarm test logs can store alarm test results, including quantification of the measured alarm signal. Rapid alarm tests are described, as are various methods of accurately measuring characteristics of the test signal in ambulatory patients, which are especially relevant to a vibration alarm. | 03-03-2011 |
20110054335 | System for Cardiac Pathology Detection and Characterization - A system improves characterization and diagnosis of cardiac electrophysiological activities by analyzing and characterizing cardiac function signals (including surface ECG signals and intra-cardiac electrograms) based on cardiac electrophysiological energy mode and pattern identification and mapping. The system accurately determines a time stamp, location and severity of cardiac pathology and clinical events by calculating a cardiac signal energy mode and energy variation and distribution. The system identifies cardiac disorders, differentiates cardiac arrhythmias, characterizes pathological severity, predicts life-threatening events, and supports evaluation of administration of drugs. | 03-03-2011 |
20110054336 | METHOD AND DEVICE FOR MEASURING THE PULSE BY MEANS OF LIGHT WAVES WITH TWO WAVELENGTHS - The method makes it possible in particular to determine the heartbeat of a person by means of a pulse measuring device ( | 03-03-2011 |
20110060233 | METHODS AND SYSTEM FOR IMPLEMENTING A CLINICAL TRIAL - A system and method for automating the implementation of and collection of data during a clinical trial on living subjects includes a computer-based clinical trial management system, programmed to define clinical trial protocols and to store subject data, including a subject identifier; an electronic subject monitoring system, for acquiring physiological data from the subject during the clinical trial; and an electronic subject polling device. The electronic polling device is programmed to acquire physiological data from the monitoring system in accordance with the clinical trial protocols, automatically, electronically associate the physiological data with an appropriate subject ID and transmit the physiological data to the clinical trial management system for storage. | 03-10-2011 |
20110060234 | AUTOMATED IDENTIFICATION OF CULPRIT CORONARY ARTERY USING ANATOMICALLY ORIENTED ECG DATA DISPLAY - An ECG monitoring system analyzes ECG signals of leads associated with different anatomical locations of the body for evidence of ST elevation in the lead signals. The ST elevation and depression measurements of the leads are plotted in a graphical display organized in relation to the anatomical points which are the sources of the lead signals. The locations of the plotted measurements in the anatomically-oriented display indicate the identity of a specific coronary artery or branch as a possible culprit coronary artery for an acute ischemic event, as well as the possible severity of the event from the magnitudes of the plotted signals. A clinician can identify a suspect culprit coronary artery from a quick glance at the graphical display. | 03-10-2011 |
20110060235 | METHOD AND SYSTEM FOR DETERMINING A PHYSIOLOGICAL CONDITION - The present invention relates to a method for determining a physiological condition of a person, comprising sampling a plurality of heart beats of the person, extracting a series of cardiac R-R intervals from the heart beat samples, and providing a two-dimensional representation of subsequent R-R intervals, wherein two subsequent R-R interval forms an entry in the two-dimensional representation, wherein the method further comprises the steps of determining a centroid, an average radius and an average rotation frequency for the plurality of entries in the two-dimensional representation, determining a plurality of distances between the radius and each of the entries in the two-dimensional representation, and determining the physiological condition of the person using the radius in combination with the plurality of distances. An advantage with the present invention following from this solution is that the time it take for determining the coherent state of the person is minimized at the same time as it is possible to quickly detect a change in state as each of the entries are directly related to the radius of the ellipse. The present invention also relates to a corresponding system making use of such a determination method. | 03-10-2011 |
20110066050 | BODY-WORN VITAL SIGN MONITOR - The invention provides a body-worn monitor featuring a processing system that receives a digital data stream from an ECG system. A cable houses the ECG system at one terminal end, and plugs into the processing system, which is worn on the patient's wrist like a conventional wristwatch. The ECG system features: i) a connecting portion connected to multiple electrodes worn by the patient; ii) a differential amplifier that receives electrical signals from each electrode and process them to generate an analog ECG waveform; iii) an analog-to-digital converter that converts the analog ECG waveform into a digital ECG waveform; and iv) a transceiver that transmits a digital data stream representing the digital ECG waveform (or information calculated from the waveform) through the cable and to the processing system. Different ECG systems, typically featuring three, five, or twelve electrodes, can be interchanged with one another. | 03-17-2011 |
20110066051 | BODY-WORN VITAL SIGN MONITOR - The invention provides a body-worn monitor featuring a processing system that receives a digital data stream from an ECG system. A cable houses the ECG system at one terminal end, and plugs into the processing system, which is worn on the patient's wrist like a conventional wristwatch. The ECG system features: i) a connecting portion connected to multiple electrodes worn by the patient; ii) a differential amplifier that receives electrical signals from each electrode and process them to generate an analog ECG waveform; iii) an analog-to-digital converter that converts the analog ECG waveform into a digital ECG waveform; and iv) a transceiver that transmits a digital data stream representing the digital ECG waveform (or information calculated from the waveform) through the cable and to the processing system. Different ECG systems, typically featuring three, five, or twelve electrodes, can be interchanged with one another. | 03-17-2011 |
20110066052 | METHOD AND SYSTEM FOR REDUCING POWER LINE INTERFERENCES IN AN ECG SIGNAL - A method and system for correcting power line interferences in an ElectroCardioGram (ECG) signal is disclosed. The method comprises: providing an input signal having ECG signal along with interference signals to a digital filter capable of filtering at a preset frequency and identifying current power line frequency, if any, from the filtered input signal. The method further includes providing a look up table with index number for a set of frequency levels and corresponding filter coefficients, the set of frequency includes incremental steps in the range of possible variations on the power line frequency. The filter coefficient corresponding to current power line frequency is identified from the look up table. The digital filter is configured using the identified filter coefficient and the input signal is filtered using the re-configured digital filter. | 03-17-2011 |
20110066053 | ADAPTIVE SAMPLING - A method and apparatus is disclosed for adaptively sampling an analogue signal to increase the sampling rate in the presence of high frequency content within the signal, for example, QRS complex of an ECG signal. In one aspect, a change in a derivative of the analogue signal is used to control a voltage-controlled oscillator to provide a clock signal for an analogue-to-digital converter. The change in the derivative is compared to an automatically controlled threshold value. The clock signal controls the sampling rate of the analogue-to-digital converter so that the sampling rate is increased from one level, where only P and T waves are present to another higher level when the QRS complex has been detected. | 03-17-2011 |
20110066054 | METHOD AND ELECTRONIC MEDICAL DEVICE FOR SIMULTANEOUSLY MEASURING AN IMPEDANCE AND A BIOPOTENTIAL SIGNAL - A method and device is disclosed for continuously and simultaneously measuring an impedance signal and a biopotential signal on a biological subject's skin. In one aspect, the method includes attaching input and output electrodes to the biological subject's skin and applying a predetermined alternating current having a first frequency to the output electrodes for creating an alternating voltage signal over the input electrodes. The first frequency is above a predetermined minimum frequency. The method also includes measuring an input signal from the input electrodes which includes a biopotential signal and the alternating voltage signal. The method also includes extracting from the input signal the biopotential signal and the alternating voltage signal, and determining the impedance signal from the alternating voltage signal. The alternating voltage signal is extracted by amplifying and demodulating the input signal using a control signal having a frequency equal to the first frequency. | 03-17-2011 |
20110071412 | Belt Type Bio-Signal Detecting Device - This invention relates to a bio-signal detecting device which can be belted up on a user. The bio-signal detecting device includes a respiratory signal detecting module, a electrocardiogram (ECG) signal detecting module, a body temperature detecting module, a contacting object and a flexible belt, wherein the respiration signal detecting module is used for obtaining a respiratory signal, the ECG signal detecting module is used for obtaining a ECG signal and the body temperature detecting module is used for a temperature value. The respiratory signal detecting module, the ECG signal detecting module, and the body temperature detecting module are disposed on the contacting object. The flexible belt is coupled to the contacting object and belts the user in order to fix the contacting object on the user. | 03-24-2011 |
20110071413 | MORPHOLOGY BASED ISCHEMIA DETECTION USING INTRACARDIAC ELECTROGRAMS - An apparatus comprises an ambulatory cardiac signal sensing circuit configured to provide an electrical cardiac signal representative of cardiac activity of a subject and processor. The processor includes a feature module, a correlation module, and an ischemia detection module. The feature module is configured to identify a fiducial feature in the cardiac signal and locate one or more cardiac features in the cardiac signal using the fiducial feature. The correlation module is configured to calculate a measure of similarity of morphology for a segment of the cardiac signal that includes the cardiac features. The ischemia detection module is configured to detect a change in the measure of similarity and determine whether the detected change in the measure of similarity is indicative of ischemia. | 03-24-2011 |
20110077538 | ELECTROCARDIOGRAM SIGNAL PROCESSING SYSTEM - According to embodiments of the present invention, an electrocardiogram signal processing system is provided which includes: a wavelet transformation unit comprising a plurality of outputs, each output being connected to one of a plurality of scales, wherein the wavelet transformation unit is adapted to transform an input electrocardiogram signal into a set of wavelets, each wavelet being output to one of the scales; a plurality of signal processing blocks, each of the signal processing blocks coupled to a respective output of the wavelet transformation unit and configured to receive and process the wavelet from the respective output, wherein the signal processing blocks provide processing functions which differ from one another. | 03-31-2011 |
20110077539 | Methods and Compositions for Prediction of Risk for Sudden Death in Long QT Syndrome - The invention generally concerns methods and compositions for screening individuals for predicting increased sudden death risk in a population of subjects having long QT syndrome (LQTS) or subjects at risk for sudden infant death syndrome (SIDS) by examining single nucleotide polymorphisms (SNPs) in the NOS1AP gene. In particular, the minor alleles for both rs16847548 and rs4657139 predicted an increased risk for sudden death in LQTS, while subjects carrying the GG or TG genotype (G is the minor allele) for rs10494366 were at increased risk of sudden death from SIDS. This information permits more attentive monitoring and/or prophylactic treatments of high risk individuals. | 03-31-2011 |
20110082378 | CARDIAC RISK STRATIFICATION - This disclosure describes techniques for generating a risk stratification indicator based on HRT measurements computed using physiological parameters sensed by an implantable medical device (IMD). In some examples, the HRT measurements may be computed by the IMD based on the physiological parameters. In other examples, the IMD may sense the physiological parameters, and transmit data representative of the parameters to an external computing device, such as an IMD programmer, which then computes the HRT measurements. Exemplary physiological parameters include cardiac signals. | 04-07-2011 |
20110087118 | Impedance Hyperaemic Stress Echocardiography - A method for performing echocardiography comprising placing compression cuffs on each of a patient's 4 extremities, applying compression rotatingly to subsets of 3 out of the 4 cuffs and monitoring EKG during applying compression rotatingly to subsets of 3 out of the 4 cuffs, thereby obtaining an echocardiograph of the patient's heart. | 04-14-2011 |
20110087119 | METHOD AND DEVICE FOR USING IMPEDANCE MEASUREMENTS BASED ON ELECTRICAL ENERGY OF THE HEART - A method and a device are disclosed for evaluating the cardio-circulatory and pulmonary condition of a patient, including determining the patient's thoracic impedance based on information solely derived from the electrical energy generated by the patient's own heart. | 04-14-2011 |
20110087120 | Methods and apparatus for locating the fossa ovalis and performing transseptal puncture - The instant disclosure relates to a family of devices and methods for both measuring electrophysiological signals and delivering elongate medical devices. In an embodiment, a kit is described that includes a hollow catheter adapted to navigate a patient's vasculature having a hollow lumen terminating at a distal end, structure configured for sensing cardiac electrical activity adjacent the distal end of the hollow catheter and for acquiring electrograms. The fossa ovalis of a subject can be located therefrom and a second medical device can be advanced into and through the hollow lumen to such an extent that a distal tip of the second medical device protrudes beyond a proximal end and the distal end of the hollow catheter at the same time. | 04-14-2011 |
20110092834 | ANALOGUE SIGNAL PROCESSORS - An analogue signal processor (ASP) application-specific integrated circuit (ASIC) is disclosed. The ACIS can be used for remotely monitoring ECG signals of a subject that has reduced power consumption. In one aspect, the ASIC performs the functions of: ECG signal extraction with high resolution using ECG readout channel, feature extraction using a band-power extraction channel, adaptive sampling the ECG signals using an adaptive sampling analogue-to-digital converter, and impedance monitoring for signal integrity using an impedance monitoring channel. These functions enable the development of wireless ECG monitoring systems that have significantly lower power consumption but are more efficient that predecessor systems. In one embodiment, the ASP ASIC consumes 30 μW from a 2V supply with compression provided by adaptive sampling providing large reductions in power consumption of a wireless ECG monitoring system of which the ASP ASIC forms a part. | 04-21-2011 |
20110092835 | WIRELESS ECG SYSTEM - A wireless monitoring system and, more particularly, a wireless monitoring system for detecting and transmitting physiological data. The present invention detects physiological data relating to a patient's cardiac activity and respiration rate and transmits the data to a remote base station via telemetry. The base station processes the data so that the data can be display by an ECG monitor. | 04-21-2011 |
20110092836 | METHOD AND APPARATUS FOR DETERMINING THE CORONARY SINUS VEIN BRANCH ACCESSED BY A CORONARY SINUS LEAD - Systems and methods for determining the coronary sinus vein branch location of a left ventricle electrode are disclosed. The systems and methods involve detecting the occurrence of electrical events within the patient's heart including sensing one or more of the electrical events with the electrode and then analyzing the electrical events to determine the electrode's position. The determination of electrode position may be used to automatically adjust operating parameters of a VRT device. Furthermore, the determination of electrode position may be made in real-time during installation of the electrode and a visual indication of the electrode position may be provided on a display screen. | 04-21-2011 |
20110098585 | Methods and Devices for Identifying Overdetection of Cardiac Signals - Methods, systems, and devices for signal analysis in an implanted cardiac monitoring and treatment device such as an implantable cardioverter defibrillator. In illustrative examples, sensed data including detected events is analyzed to identify likely overdetection of cardiac events. In some illustrative examples, when overdetection is identified, data may be modified to correct for overdetection, to reduce the impact of overdetection, or to ignore overdetected data. | 04-28-2011 |
20110105923 | COMMUNICATIONS LINK HEALTH MONITORING - A reference signal of reference pulses occurring at a uniform reference pulse rate is received. An error event signal of error event pulses occurring at a variable error event pulse rate corresponding to a rate of detected error event occurrences is received. An integrator output signal is produced from the reference signal and the error event signal. The integrator output signal has a value that approaches a first boundary threshold when the reference pulse rate exceeds the error event pulse rate and approaches a second boundary threshold when the error event pulse rate exceeds the reference pulse rate. A decision signal is set to a first value in response to a determination that the value of the received integrator output signal meets a first decision threshold and set to a second value in response to a determination that the value of the received integrator output signal meets a second decision threshold. | 05-05-2011 |
20110105924 | Modeling the Electrical Activity of the Heart by a Single Dipole, Concurrently Estimating Subject and Measurement Related Conditions - A method is provided which relates to the identification of the electrical activity in the heart in terms of single dipole, which may be considered moving or non-moving, based on measurements from a body surface electrocardiogram (ECG), concurrently estimating subject and measurement related conditions. The invention further relates to computer program for performing said method, a data carrier containing said program as well a computer device for performing said program. A device for performing said method is also disclosed. | 05-05-2011 |
20110105925 | DROWSINESS DETECTOR - A drowsiness detector capable of detecting light drowsiness of a subject with high precision is provided. The drowsiness detector acquires the measurement data of a measurement device first, and acquires a value of the pulse rate by performing preprocessing on the measurement data and extracts a pulse fluctuation from the value of the pulse rate. Then, the drowsiness detector sets the reference section width of the pulse feature value referred to in order to acquire the standard deviation of the pulse feature value (value of the pulse rate and pulse fluctuation) and then calculates the standard deviation value of the pulse feature value in the reference section width and acquires the corrected standard deviation value of the pulse feature value by dividing the standard deviation value of the pulse feature value by the pulse feature value. Then, the drowsiness detector determines whether or not the driver is lightly drowsy using the corrected standard deviation value of the pulse feature value. | 05-05-2011 |
20110112414 | SYSTEM FOR AUTOMATED EKG ANALYSIS - Systems and methods for analyzing electronic cardiac signals for use in clinical diagnostics are described. System and method embodiments are configured to assist in the analysis of details of EKG signals and vector cardiograms to determine how patients should be categorized into specific cardiac risk categories, such as an acute coronary syndrome category. System configurations may comprise memory devices, computing systems, and EKG data sources positioned at various local or remote positions, and connected via various data connectivity modalities. Various parameters may be utilized to assist in the drawing of one or more conclusions regarding the cardiac condition of a patient. | 05-12-2011 |
20110112415 | SYSTEM AND METHOD FOR AUTOMATED EKG ANALYSIS - Systems and methods for analyzing electronic cardiac signals for use in clinical diagnostics are described. Parameters pertinent to a first cardiac condition of a patient, such as determining an orientation of a vector related to the cardiac activity of said patient, and comparing the vector orientation relative to a centerpoint of a population distribution representative of a second cardiac condition, may be utilized. The second cardiac condition may be selected from the group consisting of benign early repolarization, left ventricular hypertrophy, and right bundle branch block. System and method embodiments are configured to assist in the analysis of details of EKG signals and vector cardiograms to determine how patients should be categorized into specific cardiac risk categories, such as an acute coronary syndrome category. | 05-12-2011 |
20110112416 | SYSTEM AND APPARATUS FOR PROVIDING DIAGNOSIS AND PERSONALIZED ABNORMALITIES ALERTS AND FOR PROVIDING ADAPTIVE RESPONSES IN CLINICAL TRIALS - A personalized real-time automated cardiovascular monitoring system monitors abnormalities in a patient's cardiovascular activity data through the use of individually adjusted electrocardiogram Holter apparatus (Holter/ECG device) that provides an automatic medical diagnosis of cardiac abnormalities and generates abnormality alert signals representative of certain abnormalities in patient's cardiac activities. The signals are transmitted using a wireless network through a bi-directional wireless protocol to a medical dispatcher center. A response is generated according to the abnormality detected. Individual parameters indicative of patient's cardio activities are personalized to allow for adjustments of chronic patients. A base Holter/ECG unit, includes the wireless/electric electrodes and their respective wireless/electric connections, and a Holter/ECG recording unit affixed to the base unit. The Holter/ECG apparatus can be integrated as a chip into a wireless device, such device being in a wireless phone network. Automatic real-time medical response may be provided to detection of risks of adverse effects resulting from use of at least one medication, based on automatic cardiac abnormality alert detection from the Holter/ECG data. | 05-12-2011 |
20110112417 | METHOD AND APPARATUS FOR POST-PROCESSING OF EPISODES DETECTED BY A MEDICAL DEVICE - A method and system for determining undersensing during post-processing of sensing data generated by a medical device that includes transmitting a plurality of stored sensing data generated by the medical device to an access device, the stored sensing data including sensed atrial events and sensed ventricular events. The access device determines, in response to the transmitted data, instances where the medical device identified a cardiac event being detected in response to the sensing data, and determines whether one of a predetermined number of undersensing criteria have been met in response to the transmitted data. | 05-12-2011 |
20110112418 | ECG MONITORING SYSTEM WITH CONFIGURABLE ALARM LIMITS - An ECG monitoring system for ambulatory patients includes a small multi-electrode patch that adhesively attaches to the chest of a patient. A reusable battery-powered ECG monitor clips onto the patch and receives patient electrical signals from the electrodes of the patch. A processor continuously processes received ECG signals and analyzes the received ECG signals for pre-defined arrhythmia. If an arrhythmia is detected, a wireless transceiver in the ECG monitor transmits the event information and an ECG strip to a monitoring center. At the commencement of a monitoring procedure a message is sent to the monitoring center and configuration information for arrhythmia detection is down-loaded and installed in the monitor. The configuration file is determined by a screen of selectable standard and custom arrhythmias and alarm limits at the monitoring center. | 05-12-2011 |
20110112419 | IMPLANTABLE MEDICAL DEVICE AND METHOD FOR CLASSIFYING ARRHYTHMIA EVENTS - In an implantable medical device such as an implantable cardiac defibrillator, and a method for classifying arrhythmia events, IEGM signals are analyzed to detect an arrhythmia event and a respiratory pattern of the patient is sensed. At least one respiratory parameter reflecting characteristics of the respiratory pattern of the patient is determined based on the sensed respiratory pattern and a respiratory measure corresponding to a change of a rate of change of the at least one respiratory parameter is calculated. The detected arrhythmia event is classified based on the respiratory measure and the IEGM signals, wherein arrhythmia events that satisfy at least a first criterion is classified as an arrhythmia event requiring therapy. | 05-12-2011 |
20110112420 | PAIN JUDGING DEVICE - A device for objectively judging pain is disclosed. A peak-relevant value means ( | 05-12-2011 |
20110118616 | METHOD AND APPARATUS FOR QUANTITATIVE ASSESSMENT OF CARDIAC ELECTRICAL EVENTS - Method and apparatus for computer enabled analysis of ECG (electro cardiographic) data by exploiting computerized three-dimensional spatial presentation of the measured data using vectors. A three-dimensional presentation of the human heart may be correlated with waveforms specific for standard ECG or derived ECG signals based on the dipole approximation of the heart electrical activity. Additional tools for analyzing ECG data are also provided which may be used to determine the time of cardiac electrical events, to select specific beats for automated cardiac interval determination, and to flag ECGs that have been evaluated by automated means but may benefit by human reading. | 05-19-2011 |
20110125040 | WIRELESS ECG MONITORING SYSTEM - An ECG monitoring system for ambulatory patients includes a reusable battery-powered ECG monitor with an electrode attached to a patient for receiving ECG signals. A processor analyzes the received ECG signals for predefined arrhythmia. If an arrhythmia is detected, a wireless transceiver in the ECG monitor transmits the event information and an ECG strip to a cellphone handset. The cellphone handset automatically relays the event information and ECG strip to a monitoring center for further diagnosis and necessary intervention. The ECG monitor sends notifications to the cellphone handset whenever the status of the monitor changes. The cellphone handset forwards status notifications to which a patient response has not been received to the monitoring center, as well as status notifications generated by the cellphone handset. | 05-26-2011 |
20110130669 | Method and apparatus for improving signal to noise ratio of ECG signals to facilitate cardiac beat detection - Improving the signal-to-noise ratio of electrocardiogram (ECG) measurements facilitates cardiac beat detection in a human or animal patient. ECG signals measured either on the surface of the skin or subcutaneously from pairs of leads may be combined to calculate a differential signal. The measured signal may also be averaged to produce a second estimate. A point-by-point product of the differential signal and the averaged signal is generated if the sample pair has the same polarity. The product signals feature enhanced signal components and reduced noise components, thus improving the signal-to-noise ratio of the to respective input channels. Product signals are then subjected to peak detection through a conventional auto-sensing approach. Preliminary event detection results from the conditional product signals may then be aggregated, and final sense markers for ECG beat detection may be generated by means of a voting algorithm. | 06-02-2011 |
20110137188 | SLEEP ASSISTANT SYSTEM - The present invention relates to a system for sleeping assistance which comprises an electrocardiogram collector, a heartbeat recognition device, a frequency domain analysis device and a nerve active judgment device. Frequency spectrum and heartbeat rate analysis are made by the measured electrocardiogram to find out what nerve actives effect sleeping and to give corresponding feedback. | 06-09-2011 |
20110137189 | PHYSIOLOGICAL SIGNAL SENSING SYSTEM WITHOUT TIME AND PLACE CONTRAINT AND ITS METHOD - A physiological signal sensing system and a physiological signal sensing method applied in any time and place are disclosed. The present invention is used by applying wireless transmitting electrocardiogram (ECG) data and contactless charging so as to achieve the purpose of sensing physiological signals without any time and place constraints. | 06-09-2011 |
20110137190 | METHOD AND SYSTEM FOR DETECTING P-WAVES IN THE SURFACE ECG SIGNAL - The invention provides an ECG system and apparatus for detecting P-waves even in the patients with arrhythmia. The system is capable of obtaining sufficient data from eight leads and to display an ECG construct with marked or emphasized P-waves. | 06-09-2011 |
20110144510 | METHODS TO IDENTIFY DAMAGED OR SCARRED TISSUE BASED ON POSITION INFORMATION AND PHYSIOLOGICAL INFORMATION - An exemplary system includes one or more processors; memory; and control logic, of one or more modules operable in conjunction with the one or more processors and the memory, to acquire myocardial potential data associated with position information, acquire myocardial electrical activation data associated with position information, acquire myocardial position data with respect to time, generate isopotential contours based on the potential data, generate isochronal contours based on the electrical activation data, generate isomotion contours based on the position data with respect to time, and overlay the generated isopotential contours, isochronal contours and isomotion contours on a display to indicate a region of myocardial damage or myocardial scarring with respect to a map that comprises anatomical markers. Various other methods, devices, systems, etc., are also disclosed. | 06-16-2011 |
20110152705 | SYSTEMS, METHODS AND COMPUTER PROGRAM PRODUCTS FOR HEART MONITORING - The present invention provides systems, methods and computer program products for monitoring a heart. According to one embodiment, the system includes an implantable registering unit. The registering unit comprises a first controller structured to register an electrical signal from the heart. The system includes a second controller in operable communication with the first controller. The second controller comprises a data repository structured to receive data corresponding to the registered electrical signal and being structured to store the data. The data repository stores data corresponding to a baseline electrical signal of the heart. The second controller is structured to receive the data from the first controller corresponding to the registered electrical signal and to compare the registered electrical signal to the baseline electrical signal to determine whether the heart is functioning properly. | 06-23-2011 |
20110160601 | Wire Free Self-Contained Single or Multi-Lead Ambulatory ECG Recording and Analyzing Device, System and Method Thereof - A device, method and system are provided to continuously store and analyze single or multi-lead ambulatory ECG signals. Each ECG device is self-contained, wire-free, reusable and capable of non-invasive continuous recording, analyzing and indexing of ECG data independently. A pair of snap connectors on the device body attaches the device to standard ECG electrodes to minimize noise caused by the wires. Each device contains a real-time clock to link the ECG data and a detected cardiac event with actual date and time. The device contains a USB port to upload the data to a host system. Multiple such devices are wearable by a patient to form a multi-lead ECG system. There is provided a method to continuously record and analyze ECG data using a self-contained, wire-free ECG device or multiple such devices; and further a method to synchronize the ECG data in multiple devices to realize multi-lead ECG recording. | 06-30-2011 |
20110160602 | IMPLANTABLE DEVICE WITH POST-MRI CARDIAC SIGNAL SENSING ADJUSTMENT - An implantable device, such as a pacer, defibrillator, or other cardiac rhythm management device, can include an automatic testing and adjusting of cardiac signal sensing after an MRI scanning procedure, such as to accommodate an MRI-induced physiological change in sensed cardiac depolarization amplitude or in lead impedance such as at an electrode/tissue interface. | 06-30-2011 |
20110160603 | DIAGNOSIS OF NEUROGENERATIVE DISORDERS - Methods are provided for non-invasive early screening of a subject for a neurodegenerative disorder, by analyzing one or more parameters associated with the neurodegenerative disorder. | 06-30-2011 |
20110160604 | WIRELESS ECG SYSTEM - A wireless monitoring system and, more particularly, a wireless monitoring system for detecting and transmitting physiological data. The present invention detects physiological data relating to a patient's cardiac activity and respiration rate and transmits the data to a remote base station via telemetry. The base station processes the data so that the data can be display by an ECG monitor. | 06-30-2011 |
20110166463 | METHODS AND SYSTEMS FOR OPTIMIZING EXERCISE COMPLIANCE DIAGNOSTIC PARAMETERS - A medical device detects certain patient activity based on a programmable activity threshold and determines the duration of detected activity. The activity threshold may be optimized by obtaining first and second duration measurements for at least one of a first activity session and second activity session. The first duration measurement is based on the activity threshold, while the second duration measurement is based on actual start and stop of the activity session. An adjustment of the activity threshold is suggested based on a correspondence between the first duration measurement and the second duration measurement of the first activity session, or a correspondence between the first duration measurement and the second duration measurement of the second activity session. One of the first and second activities is non-significant activity expected to be undetected by the device, while the other of the two activities is low-level activity expected to be detected by the device. | 07-07-2011 |
20110166464 | TELEMETRY-SYNCHRONIZED PHYSIOLOGICAL MONITORING AND THERAPY DELIVERY SYSTEMS - A physiological monitoring or therapy delivery system includes autonomous, wirelessly linked, implantable devices located at different areas to sense physiologic signals and deliver therapy. At least one of the implantable devices can trigger synchronized action (e.g. data capture or therapy delivery) by other implantable devices via a telemetry link. | 07-07-2011 |
20110166465 | SYSTEM, METHOD, AND PROGRAM PRODUCT FOR DELIVERING MEDICAL SERVICES FROM A REMOTE LOCATION - A system, program product, and methods related to enhanced medical services delivery to geographically distributed patient populations by remotely located physicians are provided. An embodiment of the system includes a remote medical services server, a plurality of patient electronic medical records stored in the memory of the remote medical services server, and a remote medical services program product stored in the memory of the remote medical services server adapted to access the plurality of patient electronic medical records to thereby allow display of and data entry in a selected patient electronic medical record. A patient medical service delivery station captures patient video images and displays remote physician video images. A remote physician medical service delivery suite in communication with the patient medical service delivery station through the communications network captures remote physician video images and displays patient video images and patient electronic medical records, to allow the remote physician to perform remote patient medical service delivery. | 07-07-2011 |
20110172549 | HEART RATE AND AN ELECTROCARDIOGRAM MONITORING SYSTEM CAPABLE OF OPERATING UNDER SWEATY, HIGH MOTION AND UNDER WATER ENVIRONMENTS - This innovation describes a heart rate and an electro cardiogram (ECG) monitoring system capable of operating under sweaty, high motion conditions and under water environments. The system is tailor made for wearers physical parameters. The system, is capable of wireless transmission of heart rate, ECG via mobile and land line telecommunication networks. | 07-14-2011 |
20110184296 | METHOD AND SYSTEM FOR QUANTITATIVE ASSESSMENT OF CARDIAC ELECTRICAL EVENTS - Systems and methods for characterizing aspects of an electrocardiogram signal are presented, wherein data quality and stability analysis paradigms are utilized to determine the timing certain cardiac electronic events with precision. In one embodiment, confidence factor calculation may be utilized to filter out nonusable ECG signals to leave a usable beat dataset, and this usable beat dataset may be utilized with moving window stability analysis to determine data most suitable extracted from a larger set to represent such larger set. The system may comprise a processor or microcontroller embedded into another system such as an electrocardiogram hardware system, personal computer, electrophysiology system, or the like. | 07-28-2011 |
20110184297 | METHOD AND DEVICE FOR ESTIMATING MORPHOLOGICAL FEATURES OF HEART BEATS - A method estimates morphological features of heart beats from an ECG signal. Peaks of the R wave of the ECG are detected and classified using a parallel filtering structure. The first branch implements a bandpass filtering with cut off frequencies of about 10 Hz and 35 Hz, enhancing the signal-to-noise ratio (SNR) of the QRS complex. The second branch estimates morphological features of the heart beat from an alternating current (AC) replica of the ECG signal, that may be used to classify the beat and potentially detect arrhythmias. | 07-28-2011 |
20110184298 | PORTABLE CARDIO WAVEFORM ACQUISITON AND HEART RATE VARIABILITY (HRV) ANALYSIS - A system and method for measuring heart rate variability (HRV). The system includes at least one biosensor operable to measure at least one signal from the heart. A bioamplifier is also included, the bioamplifier is in communication with the at least one biosensor. The bioamplifier amplifies the at least one signal into at least one amplified analog signal. A portable device is included, the portable device is in communication with the bioamplifier and operable to digitize the at least one amplified signal into one or more digital signals and measure inter-beat intervals from the one or more digital signals and calculate HRV from the measured inter-beat intervals. A database is also included in communication with the portable device, wherein the measured HRV is indexed in the database by one or more criteria. | 07-28-2011 |
20110190647 | RESPIRATION-GATED CARDIOGRAPHY - In a cardiographic apparatus ( | 08-04-2011 |
20110190648 | Electrocardiogram Analysis and Parameter Estimation - A system, method and memory medium for operating on an electrocardiogram (ECG) signal. A multiscale short-time Fourier transform (STFT) is perform on a set of ECG samples {s(n)} to obtain a transform array. For each sufficiently energetic peak in the transform array, a refined window width value and a refined window displacement value is generated by: computing an inner product between the set of samples and each of a plurality of functions, where the plurality of functions are sufficiently close to a coarse approximation function given by the peak location; and solving a linear system Av=c for the unknown vector v, where the vector c is determined by the inner products, where the matrix A is determined by the center times of the plurality of functions. After appropriate selection, the refined window width and refined window displacement may be used to represent ECG waveform features. | 08-04-2011 |
20110190649 | Systems And Methods For On-Site And Real-Time Electrocardiographic Imaging (ECGI) - A computer-implemented method for electrocardiographic imaging (ECGI) is provided. The method includes computing a transfer matrix, measuring a plurality of electrical potentials, and computing an estimation of electrical potentials on a surface of interest based at least in part on the measured potentials and the computed transfer matrix. The transfer matrix computing step is performed prior to the measuring step. | 08-04-2011 |
20110196246 | QRS ONSET AND OFFSET DETECTION WITH ADAPTIVE TEMPORAL WINDOWING - A heart monitor is disclosed. The monitor computes ST segment deviation as the difference in the value of an electrocardiogram signal at the ST and PQ points of a heartbeat. The ST point is found based on slope criteria and temporal criteria. The maximum (positive) slope of the QRS (maxQRS) is located. Within a preset window after the maxQRS point, the processor searches for a sample at which the second finite difference is less than a threshold that is a function of average QRS amplitude. If such a qualifying sample is found, the processor examines its location relative to the location of an adaptive window that is centered on a sample that is an adaptively determined distance from the peak of the R wave. If the qualifying point is within the adaptive window, it is chosen as the ST point. If the qualifying point is after the adaptive window, the ST point is set at the end of the adaptive window. Finally, if the qualifying point is before the adaptive window, the ST point is selected at the beginning of the adaptive window. The adaptive window is then updated according to an exponential average filter based upon the distance between the ST point and the R wave peak. | 08-11-2011 |
20110196247 | REJECTING OVERSENSING DUE TO NOISE - In general, this disclosure is directed to signal processing based methods to reject oversensing due to electromagnetic interference or other noise without compromising tachyarrhythmia detection sensitivity. A method comprises sensing a signal indicative of cardiac activity, detecting a cardiac event based on the signal, determining a count of fluctuations of the signal within a window between the detected cardiac event and a next cardiac event, and determining whether noise is present in the signal based on the count. | 08-11-2011 |
20110196248 | APPARATUS AND METHOD FOR CATHETER NAVIGATION AND TIP LOCATION - Devices and methods for obtaining and using endovascular electrograms in a number of clinical applications and settings are disclosed. In one embodiment, methods are disclosed for triggering analysis of an endovascular ECG waveform based on the detection of a peak in a skin-based ECG waveform in order to determine a location of an indwelling medical device, such as a catheter. In another embodiment, the position of a catheter or other medical device within the vasculature can be determined by analysis of the energy profile of a detected P-wave. In yet other embodiments, magnetic connecting devices for establishing an operable connection through a sterile field are disclosed. | 08-11-2011 |
20110201951 | System for cardiac arrhythmia detection and characterization - A system for heart performance characterization and abnormality detection includes an interface that receives a signal representing electrical activity of a patient heart occurring during individual heart cycles of multiple sequential heart cycles. A signal processor decomposes the received signal into multiple signals comprising a heart cycle signal primary wave and one or more heart cycle signal wavelets occurring at corresponding successively higher frequencies. The signal processor determines multiple amplitude representative values of the heart cycle signal primary wave and the one or more heart cycle signal wavelets. A comparator compares the multiple amplitude representative values with corresponding multiple predetermined threshold values to provide comparison indicators. A patient monitor in response to the comparison indicators indicating at least one of the amplitude representative values exceeds a respective predetermined threshold value, generates an alert message associated with the respective predetermined threshold. | 08-18-2011 |
20110208074 | Digital EKG machine & portable wireless printer - The digital EKG machine is used to provide an accurate reading of the voltage between pairs of these electrodes, and the muscle activity that they measure from different directions. The main components of the digital EKG machine are the info red laser lens, which is the reading source for the EKG machine. It will track each parts of the body as it glad slowly to different area of accurate testing. | 08-25-2011 |
20110208075 | System and Method for Guide Wire Detection - A system for detecting a protrusion of a conductor within an anatomy is provided. The system can include a conductor, an insulator and a protrusion module to indicate a protrusion if the conductor protrudes from the insulator within the anatomy. The conductor can comprise a guide wire, a stylet, a pacing lead, a defibrillation lead, or other conductive instruments. The insulator can comprise a catheter, a sheath a cannula or other insulative instruments. The system can detect protrusion based on an impedance or an electrogram measurement. | 08-25-2011 |
20110208076 | ECG MONITORING SYTSTEM WITH DOCKING STATION - An ECG monitoring system for ambulatory patients includes a battery-powered ECG monitor which attaches to a patient to receive patient electrical signals. A processor continuously processes received ECG signals and stores the signals in memory in the monitor. A wireless transceiver in the ECG monitor transmits the processed ECG signals to a cellphone handset. The battery of the monitor is recharged when the monitor is properly positioned in a charging dock, during which time the ECG signals are sent to the cellphone handset. Preferably the cellphone handset is recharged by the charging dock at the same time. At the conclusion of recharging and data transfer the monitor performs a self-test. A light on the charging dock is illuminated if any of the operations performed while the monitor is docked is unsuccessful. | 08-25-2011 |
20110213257 | METHOD AND APPARATUS FOR DETERMINING A HEART PERIOD FROM AN ECG WAVEFORM USING IMAGE REPRESENTATION OF ECG - A method and system and computer program product for estimating a heart period is disclosed. The heart period is detected from an ECG recording. ECG data is acquired, and converted into electronic ECG images. The data is processed to prepare for estimation of a heart period. The heart period is estimated based upon an average of intervals between a plurality of detected peaks of electronic electrocardiogram waveforms. The peaks are determined by taking a product of a filtered electronic ECG signal with a wandering baseline removed, a difference between the upper and lower ECG envelopes of the electronic ECG images, and a first order derivative of a derived ECG waveform. | 09-01-2011 |
20110213258 | STRAP BASED RELIABLE HEART RATE OR ELECTRO CARDIOGRAM MONITOR WITH WIRELESS DATA TRANSMISSION - This innovation describes a heart rate and an electro cardiogram monitoring system capable of operating under sweaty, high motion conditions and under water environments. The system is tailor made for ones physical parameters. | 09-01-2011 |
20110213259 | BODY-SURFACE MAPPING SYSTEM - A body-surface mapping system is disclosed that uses a plurality of electrodes to map at least a portion of a human torso without having to adjust the positions of the electrodes. The body-surface mapping system energizes groupings or regions of electrodes, then compares and adjusts the current driven through each grouping or region of electrodes to produce near-uniform fields. The electrodes of the body-surface mapping system may be interconnected by wires capable of sensing interelectrode distances, such that the system can reconstruct a detailed model of a patient's torso surface. The body-surface mapping system may also use a catheter in addition to the body surface electrodes to compute both endocardial and epicardial voltage distributions. | 09-01-2011 |
20110224564 | BODY-WORN VITAL SIGN MONITOR - The invention provides a body-worn vital sign monitor that measures a patient's vital signs (e.g. blood pressure, SpO2, heart rate, respiratory rate, and temperature) while simultaneously characterizing their activity state (e.g. resting, walking, convulsing, falling) and posture (upright, supine). The monitor processes this information to minimize corruption of the vital signs and associated alarms/alerts by motion-related artifacts. It also features a graphical user interface (GUI) rendered on a touchpanel display that facilitates a number of features to simplify and improve patient monitoring and safety in both the hospital and home. | 09-15-2011 |
20110224565 | METHOD OF PREDICTING ACUTE CARDIOPULMONARY EVENTS AND SURVIVABILITY OF A PATIENT - According to embodiments of the invention, there is provided a method of producing an artificial neural network capable of predicting the survivability of a patient, the method including: storing in an electronic database patient health data, the patient health data comprising a plurality of sets of data, each set having at least one of a first parameter relating to heart rate variability data and a second parameter relating to vital sign data, each set further having a third parameter relating to patient survivability; providing a network of nodes interconnected to form an artificial neural network, the nodes comprising a plurality of artificial neurons, each artificial neuron having at least one input with an associated weight; and training the artificial neural network using the patient health data such that the associated weight of the at least one input of each artificial neuron of the plurality of artificial neurons is adjusted in response to respective first, second and third parameters of different sets of data from the patient health data, such that the artificial neural network is trained to produce a prediction on the survivability of a patient. | 09-15-2011 |
20110237967 | TEMPORARY ELECTRODE CONNECTION FOR WIRELESS PACING SYSTEMS - Delivery of an implantable wireless receiver-stimulator (R-S) into the heart using delivery catheter is described. R-S comprises a cathode and an anode and wirelessly receives and converts energy, such as acoustic ultrasound energy, to electrical energy to stimulate the heart. Conductive wires routed through the delivery system temporarily connect R-S electrodes to external monitor and pacing controller. R-S comprises a first temporary electrical connection from the catheter to the cathode, and a second temporary electrical connection from the catheter to the anode. Temporary electrical connections allow external monitoring of heart's electrical activity as sensed by R-S electrodes to determine tissue viability for excitation as well as to assess energy conversion efficiency. | 09-29-2011 |
20110237968 | METHOD, IMPLANTABLE MEDICAL DEVICE, AND SYSTEM FOR DETERMINING THE CONDITION OF A HEART VALVE (As Amended) - An implantable medical device has an impedance processor that determines impedance data reflective of the transvalvular impedance of a heart valve of a heart during a heart cycle. The determined impedance data are processed by a representation processor that estimates diastolic and systolic transvalvular impedance representations. A condition processor determines the presence of any heart valve malfunction, such as valve regurgitation and/or stenosis, of the heart valve based on the estimated diastolic and systolic transvalvular impedance representations. | 09-29-2011 |
20110245698 | DEVICE AND METHOD FOR IDENTIFYING CARDIAC EVENTS - An implantable medical device includes leads having electrodes that are positioned within a heart. The electrodes sense signals derived from the heart that include waveform segments. The device includes a timing module that determines when the waveform segments cross a threshold and measures time intervals between at least two threshold crossings by the waveform segments. The device also includes event identification module that compares the time intervals to a predetermined pattern associated with a cardiac event. The event identification module identifies the cardiac event based on the time intervals and the predetermined pattern. | 10-06-2011 |
20110245699 | SYSTEMS AND METHODS RELATED TO ST SEGMENT MONITORING BY AN IMPLANTABLE MEDICAL DEVICE - Cardiac activity is sensed over a plurality of heart beats defining a beat set. For each beat in the set, it is determined whether the beat is a non-classified beat (e.g., paced beat, a beat outside of a specified heart rate range or a PVC), or a classified beat. For each classified beat, it is determined whether the beat is a non-detect beat, a minor beat or a major beat. Counts of classified beats, non-classified beats, major beats, minor beats, and non-detect beats are maintained. The beat set is declared to be one of a non-classified set, a major set, a minor set or a non-detect set based on the relative counts of classified beats, non-classified beats, major beats, minor beats, and non-detect beats. Over a period of time, counts of beat-set types are maintained and entry into and exit from ST episodes are determined based on these beat-set counts. | 10-06-2011 |
20110257546 | Biometric Sensor And Heart Function Monitoring Apparatus - A heartbeat monitoring circuit shares one electrode with another device, such as a biometric sensor, and a second electrode that may be a dedicated element or form a part of the case of the apparatus in which the circuit is housed. When operated as an electrode for the heartbeat monitoring circuit, the biometric sensor is contacted by the user's finger while the second electrode is contacted by another part of the user's body, such as a finger on the hand holding the apparatus (e.g., cell phone). Contact may then simply and naturally be made on either side of the user's heart, and ideal arrangement for parametric heart data acquisition. A third electrode may optionally be provided. Data analysis may be performed on the apparatus or by a remote optional processing center. | 10-20-2011 |
20110257547 | METHOD AND APPARATUS FOR CONTROLLING CARDIAC RESYNCHRONIZATION THERAPY USING CARDIAC IMPEDANCE - This document discusses, among other things, systems, devices, and methods for measuring cardiac impedances and producing one or more resynchronization index parameters each indicative of a cardiac synchrony or asynchrony using the measured cardiac impedances. In one example, the one or more resynchronization index parameters are used to adjust one or more pacing parameters of a cardiac resynchronization therapy. | 10-20-2011 |
20110263994 | Method and Apparatus for Acquiring and Analyzing Data Relating to a Physiological Condition of a Subject - A method for locating and marking points on a waveform includes providing data corresponding to electrocardiogram and ballistocardiogram waveforms correlated in time, searching the data to locate points corresponding to cardiac events, a location of each of the points corresponding to cardiac events being defined by a rule set, identifying and storing the points corresponding to cardiac events and outputting a visual representation including the points corresponding to cardiac events marked on the electrocardiogram and ballistocardiogram waveforms. | 10-27-2011 |
20110270099 | HERMETIC WAFER-TO-WAFER BONDING WITH ELECTRICAL INTERCONNECTION - An implantable medical device (IMD) is disclosed. The IMD includes a first substrate having a front side and a backside. A first via is formed in the front side, the via extending from a bottom point in the front side to a first height located at a surface of the front side. A first conductive pad is formed in the first via, the first conductive pad having an exposed top surface lower than first height. A second substrate is coupled to the first substrate, the second substrate having a second via formed in the front side, the via extending from a bottom point in the front side to a second height located at a surface of the front side. A second conductive pad is formed in the second via, the second conductive pad having an exposed top surface lower than second height. The coupled substrates are heated until a portion of one or both conductive pads reflow, dewet, agglomerate, and merge to form an interconnect, hermetic seal, or both depending on the requirements of the device. | 11-03-2011 |
20110270100 | ECG LEADS SYSTEM FOR NEWBORN ECG SCREENING - An apparatus including a chest strip comprising a plurality of precordial and limb leads for an electrocardiogram (ECG) and an ECG data recorder coupled to the chest strip, wherein the ECG data recorder configured to receive signals from the leads. An apparatus including a chest strip comprising a plurality of precordial leads positioned to correspond with desired lead placement for an electrocardiogram (ECG) and an ECG data recorder; a plurality of limb leads coupled to the chest strip, wherein the ECG data recorder is coupled to plurality of precordial leads and the plurality of limb leads and configured to receive electrocardiogram data generated by the plurality of precordial leads and the plurality of limb leads. A method including coupling a chest strip including precordial leads and a data recorder to a newborn, the data recorder configured to receive electrocardiogram data from the precordial leads; and transmitting electrocardiogram data from the data recorder. | 11-03-2011 |
20110270101 | IMPLANTABLE CARDIAC EVENT DETECTION DEVICE WITH AN ADAPTIVE SLEEP STATE - Disclosed is a system for the detection of cardiac events (a guardian system) that includes an implanted device called a cardiosaver, a physician's programmer and an external alarm system. The system is designed to provide early detection of cardiac events such as acute myocardial infarction or exercise induced myocardial ischemia caused by an increased heart rate or exertion. The system can also alert the patient with a less urgent alarm if a heart arrhythmia is detected. Using one or more detection algorithms, the cardiosaver can detect a change in the patient's electrogram that is indicative of a cardiac event within five minutes after it occurs and then automatically warn the patient that the event is occurring. To provide this warning, the guardian system includes an internal alarm sub-system (internal alarm means) within the cardiosaver and/or an external alarm system (external alarm means). If the guardian system is put into a pacemaker, the algorithm can utilize a different analysis of the electrogram depending on whether or not the pacemaker is actually pacing the heart. | 11-03-2011 |
20110275948 | Portable USB Electrocardiograph System and Method - The system and method of the present application includes an ECG acquisition device having a USB connector for connecting the device to a host device and a patient connector for connecting the device to a patient with ECG leads. The ECG acquisition device of the present system further includes a processor and storage medium, a power management and brokering module, a USB communications control module, an ECG acquisition circuit, and a patient isolation module. Unlike prior art ECG acquisition systems, the system of the present application affords a truly portable ECG acquisition device that may be connected through the USB connector to any host device having software processing capabilities and a display. The ECG acquisition device auto-loads and runs ECG monitoring software onto the host device eliminating the need to install additional acquisition software and/or drivers to the host device, and allows the acquisition device to interface with a host device of varying platforms. | 11-10-2011 |
20110275949 | MULTI-ELECTRODE MAPPING SYSTEM - In some aspects, a method includes measuring unipolar signals at one or more electrodes in response to electrical activity in a heart cavity. The method also includes determining, based at least in part on Laplace's equation, bipolar physiological information at multiple locations of an surface based on the measured unipolar signals and positions of the one or more electrodes with respect to the surface. | 11-10-2011 |
20110275950 | Method and Apparatus with Reduced Electrode System Specific ECG Interpretation - A method and apparatus for processing electrocardiographic signals of a patient. The apparatus comprises ten or fewer electrodes connected to a patient at least one of the standard twelve lead ECG electrode positions. The apparatus further comprises a plurality of ECG interpretation algorithms, each of the algorithms specifically tailored for analyzing a twelve lead ECG comprising both measured and derived ECG leads. The method of the present invention comprises determining whether an ECG lead is measured or derived and selecting an ECG interpretation algorithm based upon this determination. | 11-10-2011 |
20110288425 | Reduced Electrode Electrocardiography System - Electrocardiographic (ECG) signals, such as the standard | 11-24-2011 |
20110288426 | ELECTROCARDIOGRAPH WITH EXTENDED LEAD FUNCTION, AND EXTENDED LEAD ELECTROCARDIOGRAM DERIVING METHOD - There are provided an electrocardiograph with an extended lead function and an extended lead ECG deriving method capable of easily deriving an ECG signal of an extended lead ECG by an arithmetic operation, based on ECG signals of a standard 12-lead ECG measured by a potential detector | 11-24-2011 |
20110295134 | Method For ECG Screening - A method for screening a selected population such as student athletes for heart disease and/or cardiac abnormalities comprises obtaining an ECG of an individual member of the population at a first location; uploading the ECG to a data storage device connected to a communications network; storing the ECG in the data storage device; subsequently downloading the stored ECG to a display device at a second location remote from the first location; interpreting and annotating the displayed ECG; and, transmitting the annotated ECG to a pre-designated recipient. The method may further include advising school officials of the results of screening so that participation in school athletics may be limited for students identified as being at risk of sudden death if full participation were allowed. | 12-01-2011 |
20110295135 | SYSTEM FOR VERIFYING THE INTEGRITY OF CARDIAC COMPLEX TEMPLATES - A method and system for verifying the integrity of normal sinus rhythm (NSR) templates and updating the NSR template after selected time intervals. At selected time intervals after establishing a NSR template, cardiac complexes are sensed and values for one or more cardiac parameters are measured. The values of the cardiac parameters are compared to predetermined value ranges for NSR cardiac complexes. When the values of the cardiac parameters fall within the predetermined value ranges, values for the differences between the values of the cardiac parameters for the cardiac complexes and the values for the cardiac parameters of the NSR cardiac complexes are calculated. When the values of the differences are greater than one or more threshold values, the NSR template is updated as a function of the sensed cardiac complexes. | 12-01-2011 |
20110306892 | APPARATUS AND METHOD FOR MEASURING A BIOLOGICAL SIGNAL - Provided is a method and apparatuses for measuring a biological signal, in which a biological signal of an examinee is detected via at least one interface that touches skin of the examinee, and a dummy signal is detected via a dummy interface Noise that is generated by a fluctuation in the electrical characteristics of the at least one interface is removed from the biological signal using the biological signal and the dummy signal. | 12-15-2011 |
20110313305 | ECG FRONT END AND METHOD FOR ACQUIRING ECG SIGNALS - An ECG front end and a method for acquiring ECG signals are disclosed. The front end comprises a plurality of parallel measurement branches, each measurement branch comprising a protection resistor having a first terminal and a second terminal, wherein the first terminal is connectable to a respective ECG electrode. Each measurement branch comprises a first input amplifier operatively connected to the second terminal of the protection resistor and a capacitor having a first and a second terminal, wherein the first terminal of the capacitor is operatively connected to a point between the first input amplifier and the second terminal of the protection resistor and the second terminal of the capacitor is connected to a virtual ground of a second input amplifier. Each first input amplifier serves as a source of an ECG channel signal and each second input amplifier as a source of high frequency signal components. | 12-22-2011 |
20110319776 | CARDIAC CONTRACTION DETECTION USING INFORMATION INDICATIVE OF LEAD MOTION - Systems and methods for cardiac contraction detection using information indicative of lead motion are described. In an example, an implantable medical device can include a receiver circuit configured to be electrically coupled to conductor comprising a portion of an implantable lead and be configured to obtain information indicative of a movement of the implantable lead due at least in part to a motion of a heart. The device can include a processor circuit configured to determine whether a cardiac mechanical contraction occurred during a specified interval included in the obtained information indicative of the movement of the implantable lead. The processor circuit can be configured to determine information about the cardiac mechanical contraction using the obtained information indicative of the movement of the implantable lead. | 12-29-2011 |
20110319777 | ECG DEVICE WITH IMPULSE AND CHANNEL SWITCHING ADC NOISE FILTER AND ERROR CORRECTOR FOR DERIVED LEADS - The present invention provides a device and method for filtering impulsive noise and channel switching noise at ADC in an ECG device with multiplexed ESCs. The filtering is based on an implementation of Burst Sampling technique also a method for correcting errors in derived leads caused by time delays due to sequential sampling of different ECG signals is also provided. Real time digital FIR filters are used for removing other types of noise in ECG signals. The ECG device is compact and light weight and includes features of self calibration, clip detection and drawing of power from USB port of a PC, batteries or an external power source. The ECG monitoring device of the present invention measures real time ECG signals with automated data recording, data storage and retrieval, data transmission/transfer to an external system, along with parameter extraction for ECG analysis in an efficient manner for quick and reliable ECG measurement, in an extremely cost effective manner. | 12-29-2011 |
20120004563 | METHOD AND APPARATUS FOR MEASURING A BIOLOGICAL SIGNAL - Provided is an apparatus and method for analyzing a biological signal. The apparatus may measure the biological signal, detect a noise signal influencing the electrical characteristics of the measured biological signal, and display the measured biological signal by distinguishing a normal section of the measured biological signal from an abnormal section of the biological signal. | 01-05-2012 |
20120010515 | Automated Identification of Culprit Coronary Artery - A diagnostic ECG system analyzes lead traces for evidence of ST elevation in the lead signals. The pattern of ST elevation in leads having predetermined vantage points to the electrical activity of the heart and, in some instances, the presence of ST depression in certain other leads, identifies a specific coronary artery or branch as the culprit coronary artery for an acute ischemic event. The identity of the culprit coronary artery or branch is presented to the interventional cardiologist so that the correct coronary artery is accessed and the obstruction cleared. The technique can be used with standard 12-lead ECG systems as well as with ECG systems using fewer or more leads. | 01-12-2012 |
20120016249 | METHOD AND DEVICE FOR NOISE DETECTION IN PHYSIOLOGICAL SIGNALS - A method for determining the signal quality of samples in a physiological signal, in particular an electrocardiogram (ECG) signal, is provided. A supra-threshold sample sum, a noise threshold crossing sum, or both are calculated in a noise detection window including the sample to be evaluated, and low signal quality is indicated if either or both of the sums exceed respective values. ECG beat detections can then be labeled as unreliable based on the determination of low signal quality for one or more samples between the detections. | 01-19-2012 |
20120022384 | BIOMEDICAL PARAMETER PROBABILISTIC ESTIMATION METHOD AND APPARATUS - A probabilistic digital signal processor is described. Initial probability distribution functions are input to a dynamic state-space model, which operates on state and/or model probability distribution functions to generate a prior probability distribution function, which is input to a probabilistic updater. The probabilistic updater integrates sensor data with the prior to generate a posterior probability distribution function passed (1) to a probabilistic sampler, which estimates one or more parameters using the posterior, which is output or re-sampled in an iterative algorithm or (2) iteratively to the dynamic state-space model. For example, the probabilistic processor operates using a physical model on data from a mechanical system or a medical meter or instrument, such as an electrocardiogram. Output of the physical model yields an enhanced output of the original data, an output to a second physical parameter not output by the medical meter, or a prediction, such as an arrhythmia warning. | 01-26-2012 |
20120022385 | Electrocardiographic Signal Detection Device - An electrocardiographic signal detection device that includes at least one pair of electrodes that detect electrical signals of a living body; an insulating film disposed on the at least one pair of electrodes, the insulating film having a living body contact surface; a differential amplifier that generates an electrocardiographic signal by differentially amplifying the electrical signals of the living body; and an arithmetic processing unit that obtains biological information based on the electrocardiographic signal generated by the differential amplifier, wherein the insulating film and the at least one pair of electrodes are arranged such that the electrical signals of the living body are detected through capacitive coupling between the living body in contact with the living body contact surface of the insulating film and the at least one pair of electrodes. | 01-26-2012 |
20120029371 | DERIVED ELECTROCARDIOGRAM GENERATING SYSTEM AND DERIVED ELECTROCARDIOGRAM GENERATING METHOD - A derived electrocardiogram generating system includes: a personal coefficient database which stores personal coefficients specific to a subject, the personal coefficients being acquired from the subject; a population coefficient database which stores population coefficients which are average values of conversion coefficients acquired from an unspecified large number of persons belonging to a statistically significant population; and an electrocardiograph control portion: which generates a derived electrocardiogram of the subject using the personal coefficients when the personal coefficients are present in the personal coefficient database; and which generates a derived electrocardiogram of the subject using the population coefficients when the personal coefficients are absent in the personal coefficient database. | 02-02-2012 |
20120029372 | Drug Delivery Methods and Systems - Drug delivery methods and systems that include a determination of whether a cardiac condition is normal or abnormal, so that a drug may be administered in accordance with that determination. In one implementation, a drug delivery device may be controlled to reduce or stop the drug administration when a normal cardiac condition is detected. In another implementation, a patient monitoring device determines the duration that a cardiac condition is normal and provides an output indicative of the determination so that the patient may alter a therapy accordingly. | 02-02-2012 |
20120035488 | RAPID 3D MAPPING USING MULTIELECTRODE POSITION DATA - An electrophysiology (EP) system includes an interface for operator-interaction with the results of code executing therein. A template model can have channels positioned or repositioned thereupon by the user to define a set-up useful in rapid catheter positioning. Mapping operations can be performed without the requirement for precise catheter location determinations. A map module coordinates EP data associated with each selected channel and its associated position on the template model to provide this result, and can update the resulting map in the event that the channel or location is changed. Messaging and other dynamic features enable synchronized presentation of a myriad of EP data. Additional systems and methods are disclosed herein. | 02-09-2012 |
20120041326 | METHOD AND SYSTEM FOR MEASURING HEART RATE VARIABILITY - The invention provides a method and system for analyzing an ECG signal to diagnose a heart condition of an individual. A sequence HB | 02-16-2012 |
20120041327 | SYSTEM AND METHOD FOR ANALYZING WAVES OF ELECTROCARDIOGRAM - Electrocardiogram wave data in which a component of cardiac massage is removed from the electrocardiogram wave data is generated, so that the electrocardiogram wave at the time of cardiopulmonary resuscitation is identified. An electrocardiogram wave processing system of obtaining and processing the electrocardiogram wave data includes a wave identification unit that identifies an electrocardiogram wave from the obtained electrocardiogram wave data, a feature selection unit that selects a feature pattern including a feature when a cardiac massage has been performed with respect to the electrocardiogram wave data identified by the wave identification unit, a generation unit that generates a component of the cardiac massage using the feature pattern selected by the feature selection unit, and a removal unit that removes, from the obtained electrocardiogram wave data, the component of the cardiac massage generated by the generation unit. | 02-16-2012 |
20120046562 | RECONFIRMATION OF ECG-ASSISTED CATHETER TIP PLACEMENT - Reconfirmation of the position of a catheter intravascularly placed with the assistance of ECG signals of the patient is disclosed, thus assisting in determination of subsequent catheter displacement within the patient vasculature. In one embodiment a method for reconfirming a position of an indwelling medical device within a body of a patient comprises first placing the medical device within the body of the patient using ECG signals of the patient. A first ECG signal profile relating to an initial position of the indwelling medical device after initial placement of the medical device is stored. A second ECG signal profile relating to the position of the indwelling medical device at a time subsequent to initial placement of the medical device is then acquired. The first ECG signal profile is compared with the second ECG signal profile to determine whether displacement of the indwelling medical device has occurred. | 02-23-2012 |
20120046563 | Methods and Devices that Identify Overdetection in Implantable Cardiac Systems - Methods, systems, and devices for signal analysis in an implantable cardiac device such as an implantable cardioverter defibrillator. In illustrative examples, captured data including detected events is analyzed to identify likely overdetection of cardiac events. Analysis of the apparent width of detected events is used to determine whether overdetection is occurring. If overdetection is identified, data may be modified to correct for overdetection, to reduce the impact of overdetection, or to ignore overdetected data. | 02-23-2012 |
20120059270 | APPARATUS AND METHOD FOR CATHETER NAVIGATION USING ENDOVASCULAR ENERGY MAPPING - Devices and methods for obtaining and using endovascular electrograms in a number of clinical applications and settings are disclosed. In one embodiment, a method is disclosed for locating an indwelling medical device within a vasculature of a patient. The method comprises identifying an endovascular ECG waveform complex from an endovascular ECG signal associated with the indwelling medical device, then calculating an absolute value of the energy of the endovascular ECG waveform complex over a predetermined segment thereof. A position of the medical device within the vasculature is then determined by observation of the absolute value of the energy of the predetermined segment of the endovascular ECG waveform complex. | 03-08-2012 |
20120059271 | ECG Data Acquisition Device - An apparatus for generating ECG recordings and a method for using the same are disclosed. The apparatus includes a handheld device and a controller. The handheld device has first, second, third, and fourth electrodes on an outer surface of the handheld device. The controller records signals from the first, second, third, and fourth electrodes and generates an ECG recording from the signals. The controller also provides placement information regarding locations on a user's body that are to be brought into contact with the first, second, third, and fourth electrodes while the controller records the signals. The handheld device can include a cellular telephone or a PDA. The controller stores an exemplary normal ECG recording, and compares a newly generated ECG recording with the stored ECG recording and generates an indication that indicates whether the newly generated ECG recording is consistent with the stored ECG recording. | 03-08-2012 |
20120065528 | PRE-EJECTION INTERVAL (PEI) MONITORING DEVICES, SYSTEMS AND METHODS - Provided herein are implantable systems, and methods for use therewith, for monitoring a patient's pre-ejection interval (PEI). A signal indicative of cardiac electrical activity and a signal indicative of changes in arterial blood volume are obtained. One or more predetermined features of the signal indicative of cardiac electrical activity and the signal indicative of changes in arterial blood volume are detected. The patient's PEI is determined by determining an interval between the predetermined feature of the signal indicative of cardiac electrical activity and the predetermined feature of the signal indicative of changes in arterial blood volume. | 03-15-2012 |
20120071773 | Patient Screening Tools for Implantable Cardiac Stimulus Systems - Tools and devices are provided for determining whether a patient is well suited to receiving an implantable cardiac stimulation device by analyzing cardiac signals captured using external or cutaneous electrodes. Some of the illustrative tools include shapes for visual comparison to printed ECG strips. Kits for use of illustrative tools are also shown. Automatic devices are also disclosed which perform at least some analytical functions electronically for a user. In an example, a printed ECG strip is visually compared to a shape in order to ensure a patient is well suited to receiving a cardiac stimulation device having a particular implant location and/or cardiac signal analysis method implementation. | 03-22-2012 |
20120089036 | Microcontrolled Electrocardiographic Monitoring Circuit With Feedback Control - A microcontrolled electrocardiographic monitoring circuit with feedback control is provided. An input signal path includes an electrode, a low pass filter, and an amplifier connected in-line. The electrode senses an input signal and the amplifier outputs a filtered amplified output signal. A microcontroller circuit includes an input codec, analog-to-digital converter, and feedback generation module. The analog-to-digital converter converts the filtered amplified output signal into a data stream of discrete digital values. The feedback module identifies a pairing of drive resistor settings matched to each discrete digital value, which are output as a digital feedback signal. The output signal path includes an electrode and a buffer connected in-line. A pair of drive resistors is connected in parallel to an input terminal of the buffer and to the output terminals of the feedback module. Each drive resistor is adjusted according to the digital feedback signal, and the electrode provides an output signal. | 04-12-2012 |
20120089037 | Ambulatory Electrocardiographic Monitor With Jumpered Sensing Electrode And Method Of Use - An ambulatory electrocardiographic (ECG) monitor with a jumpered sensing electrode and method of use is provided. Self-powered ECG sensing circuitry is fully enclosed in a housing that provides electrode connection receptacles on a bottom surface of the housing. A flexible and stretchable electrode mounting panel having an elongated shape is provided with a layer of skin adhesive on a skin contacting surface. Sensing electrodes are mounted on opposite ends of the mounting panel. Each sensing electrode includes an electrode pad facing the skin contacting surface and an oppositely-facing electrode connection plug. Each connection plug is removably and pivotably couplable into the connection receptacles. A jumper wire assembly includes a jumper connection plug electrically connected to a jumper connection receptacle. The jumper connection plug is removably and pivotably couplable into the connection receptacles and the jumper connection receptacle is removably and pivotably couplable into the connection plugs on the mounting panel. | 04-12-2012 |
20120095357 | HEALTH MONITORING APPLIANCE - A heart monitoring system for a person includes one or more wireless nodes; and a wearable appliance in communication with the one or more wireless nodes, the appliance monitoring cardiac abnormalities. Other implementations can monitor heart rate, heart rate variability, respiratory rate, fluid status, posture and activity. | 04-19-2012 |
20120101396 | CONTINUOUS OUTPATINET ECG MONITORING SYSTEM - An ECG monitoring system for ambulatory patients includes a small multi-electrode patch that adhesively attaches to the chest of a patient. A reusable battery-powered ECG monitor clips onto the patch and receives patient electrical signals from the electrodes of the patch. A processor continuously processes received ECG signals and stores the signals in memory in the monitor. The processor also analyzes the received ECG signals for predefined arrhythmia. If an arrhythmia is detected, a wireless transceiver in the ECG monitor transmits the event information and an ECG strip to a cellphone handset. The cellphone handset automatically relays the event information and ECG strip to a monitoring center for further diagnosis and necessary intervention. | 04-26-2012 |
20120108990 | METHOD AND APPARATUS FOR REDUCING NOISE IN A MEDICAL DEVICE - A method and apparatus for detecting a cardiac event in a medical device that includes sensing a cardiac signal, detecting a cardiac event in response to the sensed signal, determining whether an interval associated with the cardiac signal is less than an interval threshold, determining a noise metric in response to an interval associated with the cardiac signal being less than the interval threshold, determining whether the noise metric is greater than a noise metric threshold, and determining whether to inhibit detecting in response to determining whether an interval associated with the cardiac signal is less than the interval threshold and determining whether the noise metric is greater than the noise metric threshold. | 05-03-2012 |
20120108991 | ISCHEMIA DETECTION AND CLASSIFICATION - Techniques for detecting ischemia and classifying a type of ischemia are described. Electrograms of cardiac activity may be generated using implanted or external electrodes, e.g., electrodes carried on vascular leads within the heart and a housing electrode. In some examples, ischemia is detected and classified as benign or malignant based on whether a change an electrogram metric is detected, or first detected, in an endocardial electrogram or a non-endocardial electrogram. The relative timing of the change in the electrogram metric and a change in heart rate or patient activity may also be considered. In some examples, the system may create a stress test for detecting ischemia by instructing the patient to exercise or increasing the cardiac pacing rate. | 05-03-2012 |
20120108992 | MORPHOLOGY CHANGE DETECTION FOR CARDIAC SIGNAL ANALYSIS - Method and apparatus for improved detection of changes in morphology for cardiac analysis in post-processing. In some examples, a method of detecting a morphology change includes receiving an electrogram signal that represents a heartbeat; calculating a plurality of correlation values between the heartbeat and a template heartbeat; determining a maximum correlation value between the heartbeat and the template heartbeat based at least partially on the plurality of correlation values; and classifying the heartbeat based on the maximum correlation value. | 05-03-2012 |
20120108993 | ELECTRODE SHAPES AND POSITIONS FOR REDUCING LOSS OF CONTACT IN AN IMPLANTABLE ECG RECORDER - An improved design for subcutaneous monitors that addresses the problem caused by bubbles of air may remain in the pocket in which the device is implanted. As implantable monitors and their associated electrodes are reduced in size, these bubbles may in some cases cover one or both electrodes, interfering with sensing of the ECG signal. The invention addresses this problem by configuring the electrodes to increase the pressure of the electrodes against the tissue above the electrodes relative to the pressures exerted by the adjacent outer facing surfaces of the device. | 05-03-2012 |
20120116239 | IDENTIFICATION DEVICE - An identification device measures a potential difference signal between two contact electrodes contacted by a driver out of a plurality of electrodes installed in a handling unit or a potential difference signal between one contact electrode installed in the handling unit and a contact electrode different from the electrodes installed in the handling unit. The device identifies a contact electrode contacted by driver's hand out of the plurality of electrodes installed in the handling unit. The device determines whether the driver's hand in contact with the identified contact electrode is the right hand or the left hand on the basis of a rotational state of the handling unit and a position of the contact electrode in the handling unit. The device identifies the heart beat from the potential difference signal amplified by an amplification factor determined on the basis of a result of determination. | 05-10-2012 |
20120123283 | Apparatus, Method, And Computer Program For Predicting Risk For Cardiac Death - An apparatus, a method, and a computer program for predicting a risk for a cardiac death are presented. Early repolarization patterns in leads of an electrocardiogram recorded from a subject are detected if an amplitude of a J-point at a QRS complex and ST segment junction of a lead exceeds a predetermined amplitude threshold. Amplitude patterns of ST segments in leads of the electrocardiogram are also determined. Finally, an elevated risk for a future cardiac death of the subject on the basis of a possible arrhythmia is predicted if early repolarization patterns are detected in at least two leads of the electrocardiogram, and if the ST segments in the at least two leads of the electrocardiogram are determined to have a horizontal or descending amplitude pattern. | 05-17-2012 |
20120123284 | WIRELESS HEMODYNAMIC MONITORING SYSTEM INTEGRATED WITH IMPLANTABLE HEART VALVES - Described is a wireless hemodynamic monitoring system that is integrated with implantable cardiac devices. The system includes at least one sensory component that is adapted to measure one or more hemodynamic parameters inside a cardiac chamber of a subject. At least one transceiver is attached with the sensory component to transmit a signal containing data corresponding to the hemodynamic parameters and receive control signals from an external control device. An energy harvesting system is attached with the sensory component to measure pressures within the cardiac chamber and generate power for the monitoring system. The monitoring system can be attached with a heart valve or other cardiac device and implanted within a patient. | 05-17-2012 |
20120130263 | MEDICAL DECISION SUPPORT SYSTEM - A process for pre-processing recorded and digitised heart sounds and corresponding digitised ECG signals is provided. The pre-processed signals ( | 05-24-2012 |
20120157865 | ADAPTIVE ECG WANDERING CORRECTION - A received signal is filtered by filtering a group of estimated components of the received signal from the received signal such that the noise and/or distortion in the received signal is minimized. | 06-21-2012 |
20120157866 | SYSTEM AND METHOD FOR DETERMINING PHYSIOLOGICAL PARAMETERS BASED ON ELECTRICAL IMPEDANCE MEASUREMENTS - A system and method for determining physiological parameters based on electrical impedance measurements is provided. One method includes obtaining electrical measurement signals acquired from a plurality of transducers coupled to a surface of an object and constructing a system matrix to define one or more relationships between the impedance measurement signals. The method also includes decomposing the system matrix to separate the electrical measurement signals. | 06-21-2012 |
20120157867 | Interference Mitigation Circuitry for Biometric Measurements - An apparatus includes a first signal line configured to couple signals from a first skin electrode to a first input of a differential amplifier comprised as a front-stage in a signal detection circuitry for measurement of biometric signals sensed by the first skin electrode; a second signal line configured to couple signals from a second skin electrode, different from the first skin electrode, to a second input of the differential amplifier of the signal detection circuitry for measurement of biometric signals sensed by the second skin electrode; and an impedance circuitry coupled between the first signal line and the second signal line in order to tune input impedance of the differential amplifier. Impedance of the impedance circuitry is higher on a first frequency band covering a frequency band of the measured biometric signals than on a second frequency band not covering the frequency band of the measured biometric signals. | 06-21-2012 |
20120157868 | Interference Mitigation in Biometric Measurements - A disclosed apparatus includes a first signal line configured to couple signals from a first electrode to a signal detection circuitry for measurement of biometric signals sensed by the first electrode; a second signal line configured to couple signals from a second electrode, which is different from the first electrode, to the signal detection circuitry for measurement of biometric signals sensed by the second electrode; and a coupling circuitry configured to selectively couple the first signal line and the second signal line to a common electrical potential so as to equalize electrical potential difference between the first electrode and the second electrode. | 06-21-2012 |
20120157869 | LIE DETECTION BASED ON HEART RATE VARIABILITY - The present disclosure provides computer readable storage media useful in lie detection based on heart rate variability (HRV) analysis and HRV analysis using strange entropy. The computer readable storage medium may have a computer program encoded thereon, the computer program, when executed by a computer, instructs the computer to execute a method of lie detection that includes receiving an input associated with HRV and performing a nonlinear HRV analysis based on the input associated with HRV to obtain a lie detection result, the nonlinear HRV analysis. | 06-21-2012 |
20120165690 | METHOD FOR MEASURING PHYSIOLOGICAL PARAMETERS - A method for measuring physiological parameters uses statistical properties, spectrum analysis and feedback mechanisms to remove the signal noise generated by human body movement from a detected physiological signal. | 06-28-2012 |
20120165691 | SYSTEM AND METHOD OF DETECTING ABNORMAL MOVEMENT OF A PHYSICAL OBJECT - The present application discloses a method of detecting abnormal movement of a physical object. A periodic signal is representative of the movement of the object. According to some embodiments, a raw matrix having a first array and a second array is generated, and then an integrated matrix is generated by performing a dimension reduction on the raw matrix. A likelihood of a predetermined type of abnormal movement of the physical object is determined by comparing the integrated matrix with a predetermined benchmark pattern. In some embodiments, the generation of the raw matrix includes performing a first analysis on a predetermined portion of the periodic signal to generate the first array and performing a second analysis different from the first analysis on the predetermined portion of the periodic signal to generate the second array. | 06-28-2012 |
20120172737 | Measurement Device, Measurement System and Data Processing Method for Physiological signal - A measurement device for measuring a physiological signal of a testee includes a sensing unit for sensing physiological activities of the testee to generate the physiological signal, a data transmission unit for transmitting data to a host, a storage unit for storing data, and a control unit for deciding to use the data transmission unit to transmit the physiological signal to the host or to use the storage unit to store the physiological signal according to a connection status between the data transmission unit and the host. | 07-05-2012 |
20120179055 | METHOD AND DEVICE FOR EARLY DETECTION OF HEART ATTACK - A device and method for heart performance characterization and abnormality detection is disclosed herein. The device and method analyze and characterize cardiac electrophysiological signals which help in the diagnosis of myocardial ischemia in advance of a heart attack. | 07-12-2012 |
20120179056 | APPARATUS AND METHOD FOR DETECTION OF LEAD FAILURE IN AN IMPLANTABLE MEDICAL DEVICE - A method for automatic threshold control and detection of lead failure in an implanted medical device obtains three sensing vectors for measurement of an electrocardiogram signal. A dynamic error signal is determined from the vectors, and may be used to set a detection threshold for insufficient ECG signals, and/or to passively monitor the device for indications of lead failure without performing an impedance measurement. Passive mode operation conserves battery power and enables continuous lead integrity checks. A quality factor may also be determined from the error signal, to indicate whether or not signal measurements are valid with respect to noise levels. If the detection threshold is allowed to decay between successive features of the electrocardiogram, the decay rate may be made adaptive such that it automatically adjusts to changes in heart rate or to changes in amplitude of the electrocardiogram features. | 07-12-2012 |
20120184863 | ELECTROANATOMICAL MAPPING - This invention relates to the determination and/or representation of physiological information relating to a heart surface. | 07-19-2012 |
20120184864 | ELECTROANATOMICAL MAPPING - This invention relates to the determination and/or representation of physiological information relating to a heart surface. | 07-19-2012 |
20120184865 | ELECTROANATOMICAL MAPPING - This invention relates to the determination and/or representation of physiological information relating to a heart surface. | 07-19-2012 |
20120184866 | IMPLANTABLE MEDICAL DEVICE AND METHOD FOR MULTISITE MEASUREMENT OF INTRACARDIAC IMPEDANCE - The present invention generally relates to an implantable medical device and method for detecting and monitoring cardiac status of a patient using simultaneous multisite measurements of the intracardiac impedance and in particular to ischemia detection using the simultaneous multisite measurements. The device comprises an impedance measuring unit being connectable to a plurality of electrode configurations including a current generating device adapted to generate a current and apply the current between two electrodes of a current injecting electrode configuration of the electrode configurations and a voltage sensing device including a plurality of voltage sensing circuits arranged in parallel. Each voltage sensing circuit being connectable to a specific voltage sensing electrode configuration of the electrode configurations and being arranged to sense a voltage over the voltage sensing electrode configuration resulting from the applied current, wherein the voltage sensing circuits are capable of sensing the resulting voltages simultaneously. The device further comprises an impedance calculating module adapted to calculate a plurality of impedance values, each impedance value being based on the applied current and a resulting voltage. | 07-19-2012 |
20120190994 | APPARATUS AND METHOD FOR MEASURING BIOLOGICAL SIGNAL WITH MULTIPLE UNIT MEASURERS - A biological signal measuring apparatus is provided. The biological signal measuring apparatus includes a first unit measurer configured to measure a first biological signal of a subject based on an electrical characteristic difference between first electrodes contacting the skin of the subject, and a second unit measurer configured to measure a second biological signal of the subject based on an electrical characteristic difference between second electrodes contacting the skin of the subject at positions different from positions of the first electrodes. A plurality of unit measurers including at least the first unit measurer and the second unit measurer are arranged based on characteristics of contact parts of the first and second electrodes. | 07-26-2012 |
20120197144 | EXCHANGEABLE ELECTRODE AND ECG CABLE SNAP CONNECTOR - A body-worn physiological sensor assembly ( | 08-02-2012 |
20120197145 | High-Resolution Magnetocardiogram Restoration for Cardiac Electric Current Localization - Magnetocardiogram (MCG) provides temporal and spatial measurements of cardiac electric activities, which permits current localization. An MCG device usually consists of a small number of magnetic sensors in a planar array. Each sensor provides a highly low-resolution 2D MCG map. Such a low-res map is insufficient for cardiac electric current localization. To create a high resolution MCG image from the sparse measurements, an algorithm based on model learning is used. The model is constructed using a large number of randomly generated high resolution MCG images based on the Biot-Savart Law. By fitting the model with the sparse measurements, high resolution MCG image are created. Next, the 2D position of the electric current is localized by finding the peak in the tangential components of the high resolution MCG images. Finally, the 2D current localization is refined by a non-linear optimization algorithm, which simultaneously recovers the depth of the electric current from the sensor and its magnitude and orientation. | 08-02-2012 |
20120197146 | METHODS, SYSTEMS, AND MONITORING DEVICES FOR MANAGING HEMODYNAMIC PARAMETERS - Methods, systems, and monitoring devices for managing hemodynamic parameters are disclosed. | 08-02-2012 |
20120203123 | NOISE DETECTION IN IMPLANTABLE MEDICAL DEVICES - An apparatus comprises a primary cardiac signal sensing circuit configured to sense at least a first cardiac signal, a secondary cardiac signal sensing circuit configured to sense a secondary cardiac signal, and a control circuit. The control circuit includes a noise detection circuit that has an alignment circuit. The alignment circuit is configured to align a segment of the sensed first cardiac signal with a segment of the sensed secondary cardiac signal. The noise detection circuit configured to determine a number of turns in the first cardiac signal segment, determine a number of turns in the secondary cardiac signal segment, generate an indication of noise in the first and secondary cardiac signals according to the determined number of turns, and provide the indication of noise to a user or process. | 08-09-2012 |
20120226176 | DEVICES AND METHODS FOR RECEIVING PHYSIOLOGICAL SIGNALS - An electronic device for receiving a physiological signal of a user comprises a physiological signal receiving device and a computing device. The physiological signal receiving device comprises: a sensor, configured to receive the physiological signal of the user; a first processor, coupled to the sensor, and configured to convert the physiological signal into a digital signal; a first communication interface, configured to output the digital signal; a battery and power management system; and an ExpressCard connector, coupled to the first processor. The computing device comprises a second communication interface, configured to receive the digital signal; and an ExpressCard socket. | 09-06-2012 |
20120226177 | ECG LEAD WIRE ORGANIZER AND DISPENSER - An ECG lead set including an ECG electrode assembly and a lead set hub. ECG electrode includes at least one electrode configured to receive biopotential signals from a patient, a plug connector for connecting said ECG electrode assembly, a web, connected between the at least one electrode and the plug connector and configured to form an electrical connection therebetween. The lead set hub includes at least one receptacle configured to receive the plug connector of the ECG electrode assembly. | 09-06-2012 |
20120238889 | METHOD AND APPARATUS FOR DETERMING THE CORONARY SINUS VEIN BRANCH ACCESSED BY A CORONARY SINUS LEAD - Systems and methods for determining the coronary sinus vein branch location of a left ventricle electrode are disclosed. The systems and methods involve detecting the occurrence of electrical events within the patient's heart including sensing one or more of the electrical events with the electrode and then analyzing the electrical events to determine the electrode's position. The determination of electrode position may be used to automatically adjust operating parameters of a VRT device. Furthermore, the determination of electrode position may be made in real-time during installation of the electrode and a visual indication of the electrode position may be provided on a display screen. | 09-20-2012 |
20120238890 | BODY WORN PHYSIOLOGICAL SENSOR DEVICE HAVING A DISPOSABLE ELECTRODE MODULE - A method for providing high voltage circuit protection for a patient monitor. The method includes providing a substrate that supports one or more electrical connections to a patient's body. The method further includes determining a print pattern and thickness of a first material having a first resistivity to be printed on the substrate, determining a print pattern and thickness of a second material having a second resistivity to be printed on the substrate, printing the first material onto the substrate, and printing the second material onto the substrate wherein at least part of the second the material overlays the first material. | 09-20-2012 |
20120253213 | TWA MEASURING ELECTROCARDIOGRAPH, TWA MEASURING METHOD, AND TWA MEASUREMENT SYSTEM - A TWA measuring electrocardiograph includes: a transformation coefficient storing section configured to store a transformation coefficient for deriving a Frank's vector electrocardiogram; an electrocardiograph controlling section configured to produce a scalar electrocardiogram from electrocardiographic signals of measurement electrodes adapted to be attached to a subject, and configured to derive the Frank's vector electrocardiogram from the scalar electrocardiogram by using the transformation coefficient; and a TWA measuring section configured to measure a presence of TWA based on the derived Frank's vector electrocardiogram. | 10-04-2012 |
20120265084 | ELECTROPHYSIOLOGICAL SIGNAL PROCESSING AND UTILIZATION - A method of mapping electrophysiological information, including receiving imaging information for a tissue region; receiving a monophasic action potential signal from the tissue region; assigning a value corresponding to a depolarization segment of the monophasic action potential signal; receiving location information associated with the monophasic action potential signal; and generating an image based on the imaging information, the assigned value, and the location information. | 10-18-2012 |
20120271184 | METHOD FOR CALIBRATING A DIAGNOSTIC MEASURING DEVICE - A method for calibrating a diagnostic measuring device for biological signals, which can be represented as vectors, such as the representation of cardiac potentials in cardiography. The method determines a zero-point vector or reference point for the calibration of the measuring device as an average vector within a resting section having minimal change of the signal. A search range for such a resting section can be limited to a time frame within the entire measuring period and biologically justified, for example, by means of empirical data that indicate physiological resting phases and/or from the knowledge of the course of the physiological process to be examined. | 10-25-2012 |
20120277606 | IMPLANTABLE MEDICAL DEVICE WITH AUTOMATIC SENSING THRESHOLD ADJUSTMENT IN NOISY ENVIRONMENT - An implantable medical system includes an implantable medical lead including at least one electrode and an implantable medical device (IMD) coupled to the implantable medical lead. The IMD includes a sensing module that obtains electrical signals on the implantable medical lead. The electrical signals on the implantable medical lead include cardiac signals as well as noise-induced signals. The IMD also includes a noise detection module that obtains noise signals independently of the electrical signals on the implantable medical lead. A control module of the IMD adjusts a sensing threshold of the sensing module in response to detecting the noise signals via the noise detection module. In instances in which the amplitude of the noise-induced signal on the lead is too large, the IMD may transition to a noise operating mode specifically designed to accommodate noisy environments. | 11-01-2012 |
20120277607 | METHOD AND APPARATUS FOR IDENTIFICATION OF ISCHEMIC/INFARCTED REGIONS AND THERAPY OPTIMIZATION - A method and apparatus is described for detecting and localizing areas of myocardial infarction or ischemia. By pacing sites in proximity to the infarcted or ischemic region with appropriately timed pacing pulses, the region is pre-excited in a manner that lessens the mechanical stress to which it is subjected, thus reducing the metabolic demand of the region and the stimulus for remodeling. | 11-01-2012 |
20120283586 | METHOD OF SIGNAL ENHANCEMENT FOR ECG DEVICES - An embodiment of the invention comprises a method of monitoring cardiac electrical activity with two or more ECG devices and computing an enhanced cardiac electrical signal from the cardiac electrical signals obtained from the two or more ECG devices. Electrodes of the two or more ECG devices are positioned in a manner to provide an electrical potential difference that is large enough to give useful information about a given ECG signal. The method further includes recommending addition of a supplemental ECG device when it is determined that the one or more of the existing ECG devices are inadequate for providing cardiac electrical data that identifies a specific cardiac event. | 11-08-2012 |
20120296227 | Electro-myocardial cardiogram (EmCG) Parameter's CSS/RSS for calculating heart performance - A method to evaluate Electro-Myocardial Cardiogram (EmCG) parameters is disclosed. The method comprises calculating a Contraction Strength Strain (CSS) and Relaxation Strength Strain (RSS) index. The calculation is represented by a non-linear waveform that represents the excitement function and pump function of the heart. | 11-22-2012 |
20120302904 | HEART STIMULATOR AND METHOD FOR A-V DELAY OPTIMIZATION - Exemplary methods and apparatuses are disclosed that provide for determination of an atrio-ventricular delay on a beat-to-beat basis by determining a P-wave duration from electric signals corresponding to electric potentials in a heart, and determining the atrio-ventricular delay on a beat-to-beat basis such that the atrio-ventricular delay for an individual heart cycle depends on the P-wave duration of a same or an immediately preceding heart cycle. | 11-29-2012 |
20120323130 | SYSTEM AND METHOD OF NOISE DETECTION IN AN ELECTROCARDIOLOGY STUDY - A system to use in combination with an ECG signal acquisition system is provided. The ECG signal acquisition system can be operable to connect to an arrangement of electrodes on a subject. The system can include a circuit board and a plurality of subcircuits mounted on the circuit board. The plurality of subcircuits can be arranged on the circuit board having an electrical impedance that correlate to an electrical impedance of the arrangement of electrodes on the skin surface of the subject. The system can further include an output connector connected in electrical communication to receive signals communicated from the plurality of subcircuits for communication to the ECG acquisition system. | 12-20-2012 |
20120330170 | Methods, Systems and Devices for Detecting and Diagnosing Heart Diseases and Disorders - Disclosed herein methods, devices, and systems for detecting and diagnosing a heart disease or disorder in a subject from a prime electrocardiogram which comprises calculating at least one distribution function of the prime electrocardiogram and determining whether the distribution function is indicative of the presence of absence of the heart disease or disorder. | 12-27-2012 |
20120330171 | IMPLANTABLE MEDICAL DEVICE SENSING WIRELESS ECG AS SUBSTITUTE FOR INTRACARDIAC ELECTROGRAM - A CRM system enhances intracardiac electrogram-based arrhythmia detection using a wireless electrocardiogram (ECG), which is a signal sensed with implantable electrodes and approximating a surface ECG. In one embodiment, the wireless ECG is sensed as a substitute signal for the intracardiac electrogram when the sensing of the intracardiac electrogram becomes unreliable. | 12-27-2012 |
20130012825 | Method, Computer Program, and System for Automated Real-Time Signal Analysis for Detection, Quanitification, and Prediction of Signal Changes - A method, computer program, and system for real-time signal analysis providing characterization of temporally-evolving densities and distributions of signal features of arbitrary-type signals in a moving time window by tracking output of order statistic filters (also known as percentile, quantile, or rank-order filters). Given a raw input signal of arbitrary type, origin, or scale, the present invention enables automated quantification and detection of changes in the distribution of any set of quantifiable features of that signal as they occur in time. Furthermore, the present invention's ability to rapidly and accurately detect changes in certain features of an input signal can also enable prediction in cases where the detected changes associated with an increased likelihood of future signal changes. | 01-10-2013 |
20130035604 | Frequency Analysis of 12-Lead Cardiac Electrical Signals to Detect and Identify Cardiac Abnormalities - A method to detect and identify any cardiac abnormality of a human heart by means of the frequency analysis of the cardiac electrical signal of the twelve (12) leads independently and two (2) corresponding leads jointly, comprises the steps of obtaining from a patient 12 time-domain cardiac electrical signals, commonly known as 12-lead ECG (electrocardiogram) signals, mathematically transforming these ECG signals into twelve (12) individual frequency-domain amplitude spectra with one spectrum for each of the 12 leads in a frequency range from 0 Hz to 25 Hz, applying the digital signal process principles of plurality of functions to determine the quality and quantity of each signal and that of two corresponding signals, comparing against a set of parameters that has been established in advance to identify and determine the diagnostic value of each index, and analyzing the value of all identified indexes thereby assessing the pathological condition of a human heart. | 02-07-2013 |
20130041272 | SENSOR APPARATUS ADAPTED TO BE INCORPORATED IN A GARMENT - A sensor apparatus adapted to be incorporated in a garment, said apparatus comprising one or more sensors, one or more fasteners to which an electronic device can be attached for receiving data from said one or more sensors, a first textile layer which in use is on the inside of the garment, a second textile layer which in use is on the outside of the garment, and a third intermediate layer provided between said first and second layer along at least a portion of said tube, wherein said first and second textile layers are made from a substantially elastic material, and said third intermediate layer is substantially more rigid than said first and second textile layers. The sensors may be ECG and respiration sensors. | 02-14-2013 |
20130046193 | Method and Apparatus for Predicting Patient Outcomes from a Physiological Segmentable Patient Signal - A method and apparatus for predicting patient outcome from a physiological segmentable signal of a patient. In one embodiment, the method comprises the steps of obtaining the physiological segmentable signal of the patient; segmenting the physiological segmentable signal into a plurality of separate segmentable components; calculating a time series of the morphological distance between adjacent separate segmentable components of the plurality of separate segmentable components; and predicting patient outcome in response to the time series of the morphological distance. In another aspect, the invention relates to a method for extracting information from physiological signals for one or more subjects including the steps of partitioning the physiological signal into a plurality of components, grouping the components into a plurality of information classes, assigning a unique symbol to each Information class, mapping each component to the assigned symbol, and examining one or more such sequences for clinical significance. | 02-21-2013 |
20130053713 | Convertible Monopole And Inverted-F Antenna Assembly For Use In A Medical Telemetry System - An antenna assembly is configured for use with an external device that is configured to wirelessly communicate with an implantable medical device (IMD). The antenna assembly may include an antenna member pivotally secured to a structure through a feed post, and a fixed tail fixed to the structure. The antenna member may be pivotal between a first orientation in which the antenna member electrically connects to the fixed tail, and a second orientation in which the antenna member is disconnected from the fixed tail. The antenna member and the fixed tail cooperatively operate in a first antenna mode when the antenna member is in the first orientation. The antenna member is configured to operate in a second antenna mode when the antenna member is in the second orientation. | 02-28-2013 |
20130053714 | SYSTEM AND METHOD FOR DETECTING AND CORRECTING ATRIAL UNDERSENSING - A method for operating an implantable medical device includes delivering a plurality of pacing pulses to an atria of a patient's heart and monitoring intrinsic atrial activity to detect intrinsic atrial contractions between one or more of the plurality of pacing pulses. The method further includes detecting atrial undersensing as a function of the detection of intrinsic atrial contractions. | 02-28-2013 |
20130079650 | GRAPHIC USER INTERFACE FOR PHYSICAL PARAMETER MAPPING - A method, including measuring values of a physical parameter at multiple locations in an organ of a subject, and analyzing the measured values to identify a range of the values, including at least one sub-range containing one or more values that were not measured. The method further includes receiving a selection from a user of a value in the sub-range, and, responsive to the selection, displaying a candidate location for further measurement. | 03-28-2013 |
20130085402 | ECG Leadwire System With Noise Suppression And Related Methods - A noise-suppressing electrocardiograph (ECG) adapter having a first end, a second end, and a noise-suppression element is presented, together with an ECG noise-suppressing system and related methods. In an embodiment, the noise-suppressing ECG adapter includes a housing having at least one first connector disposed at a first end of the housing adapted to electrically couple with an ECG lead set, and at least one second connector adapted for coupling to an input of an ECG device. The adapter includes a noise suppression element. The noise suppression element includes a ferromagnetic element having an opening defined therein. In an embodiment the noise suppression element is internal to the adapter. In another embodiment, the noise suppression element is tethered externally to the adapter and configured to clamp around at least a portion of an ECG leadwire. | 04-04-2013 |
20130096445 | T-WAVE OVERSENSING - The present disclosure is directed to the classification of cardiac episodes using an algorithm. In various examples, an episode classification algorithm evaluates electrogram signal data to determine whether T-wave oversensing has occurred. The T-wave oversensing analysis may include, for example, identifying beat runs within the cardiac episode whether the beats within the run have at least one characteristic that alternates beat to be or clustering beats within the cardiac episode based on beat to beat interval length. The T-wave oversensing determination may be based on probabilistic analysis in some examples. | 04-18-2013 |
20130109984 | BIOLOGICAL INFORMATION MEASURING BAND WITH A RECHARGEABLE ABILITY | 05-02-2013 |
20130109986 | ELECTRODE LEAD OF PACEMAKER AND PACEMAKER | 05-02-2013 |
20130109987 | METHOD AND DEVICE FOR TREATMENT OF ARRHYTHMIAS AND OTHER MALADIES | 05-02-2013 |
20130116583 | SYSTEMS AND METHODS FOR PREDICTING AND CORROBORATING PULMONARY FLUID OVERLOADS USING AN IMPLANTABLE MEDICAL DEVICE - Techniques are provided for corroborating a preliminary detection of pulmonary fluid overload within a patient made initially based on transthoracic impedance. In one example, corroborative parameters pertaining to hematocrit, device pocket fluid accumulations, heart rate variability (HRV) and mean atrial tachycardia/atrial fibrillation (AT/AF) times are evaluated to confirm the fluid overload. Techniques are also provided for generating proxies for evaluating hematocrit and device pocket fluid accumulation based on certain impedance measurements. Still further, techniques are provided for predicting a possible pulmonary fluid overload based on trends in HRV or mean AT/AF times. System and method examples are set forth herein. | 05-09-2013 |
20130123652 | ACCURATE TIME ANNOTATION OF INTRACARDIAC ECG SIGNALS - A method for analyzing signals, including: sensing a time-varying intracardiac potential signal and finding a fit of the time-varying intracardiac potential signal to a predefined oscillating waveform. The method further includes estimating an annotation time of the signal responsive to the fit. | 05-16-2013 |
20130131526 | OVERVOLTAGE PROTECTION FOR DEFIBRILLATOR - A defibrillation circuit comprising a gas discharge tube and a light source arranged to pre-energize the gas discharge tube in order to provide predictable breakdown conditions of the gas discharge tube. The gas discharge tube may be used as an overvoltage protection device for the defibrillation circuit or for certain parts of the defibrillation circuit. An overvoltage protection device for medical devices is also described. The overvoltage protection device comprises a gas discharge tube and a light source arranged to pre-energize the gas discharge tube in order to provide predictable breakdown conditions of the gas discharge tube. | 05-23-2013 |
20130138003 | METHOD, APPARATUS AND COMPUTER PROGRAM PRODUCT FOR MONITORING CLINICAL STATE OF A SUBJECT - A method, apparatus, and computer program product for monitoring clinical state of a subject are disclosed. To provide a mechanism that allows perception of the clinical state of the subject easily and without expertise, an evolution measure is determined for each of a plurality of physiological channel signals acquired from a subject, thereby to obtain a corresponding plurality of channel-specific evolution measures, wherein each channel-specific evolution measure is indicative of development in respective channel signal. Each channel-specific evolution measure is mapped to a plot color, thereby to obtain a channel-specific plot color for each of the plurality of physiological channel signals, wherein the determining and mapping are carried out in successive time windows, thereby to obtain a corresponding plurality of channel-specific plot color sequences, which are presented to a user as an indication of the clinical state of the subject. | 05-30-2013 |
20130138004 | OFF-LINE SENSING METHOD AND ITS APPLICATIONS IN DETECTING UNDERSENSING, OVERSENSING, AND NOISE - A system and method for performing independent, off-line evaluation of event sensing for collected electrograms, comprising: sensing an electrogram using an implantable medical device (IMD); determining locations of heart beats on at least one channel of the electrogram using a multi-pass process, resulting in a group of multi-pass beat locations; storing the electrogram and device-identified beat locations in a memory location; and retrieving the electrogram and device-identified beat locations from the memory location. The multi-pass process determines locations of heart beats on at least a first channel of the electrogram. The device-identified group of beat locations are then compared to the multi-pass group of beat locations identified using the multi-pass method. Based on the comparing step, oversensing of beats, undersensing of beats, or noise from the device can be detected. | 05-30-2013 |
20130138005 | SYSTEM AND METHOD FOR OFF-LINE ANALYSIS OF CARDIAC DATA - A system and method for performing off-line analysis of cardiac electrogram data, comprising: retrieving an electrogram from a memory location; identifying a first-channel group of candidate beats from at least a first channel of the electrogram; and identifying a second-channel group of candidate beats from at least a second channel of an electrogram. For each first-channel beat candidate near a second-channel beat candidate, the amplitude of the first-channel beat candidate is compared with the amplitude of a previous beat and the amplitude of a next beat on the first electrogram channel, and first-channel beat candidates that are outside of a first pre-determined range from either the previous or next beat are removed. Then first-channel beat candidates that are outside of a second pre-determined range from either the previous or next beat candidate are removed. | 05-30-2013 |
20130138006 | SINGLE CHAMBER LEADLESS INTRA-CARDIAC MEDICAL DEVICE HAVING DUAL CHAMBER SENSING WITH SIGNAL DISCRIMINATION - A leadless intra-cardiac medical device (LIMD) includes multiple electrodes that allow for stimulation and sensing of the right ventricle (RV) and sensing of the right atrium (RA), even though it is entirely located in the RV. The LIMD includes a housing having a proximal end configured to engage local tissue in the local chamber and electrodes located at multiple locations along the housing. Sensing circuitry is configured to define a far field (FF) channel between a first combination of the electrodes to sense FF signals occurring in the adjacent chamber. The sensing circuitry is configured to define a near field (NF) channel between a second combination of the electrodes to sense NF signals occurring in the local chamber. A controller is configured to analyze the NF and FF signals to determine whether the NF and FF signals collectively indicate that a validated event of interest occurred in the adjacent chamber. | 05-30-2013 |
20130138007 | HEARTBEAT MEASURING DEVICE AND HEARTBEAT MEASURING METHOD - Information is stored, and it is determined whether or not a measurement state of a heart rate is normal on the basis of the information. | 05-30-2013 |
20130144179 | Cross-Band Communications In an Implantable Device - An ambulatory monitoring device includes a sensor to monitor a physiological signal and a battery power source. The device also includes a wireless transceiver adapted to monitor a first frequency band having frequencies below 1 MHz and configured to detect and receive, using less than 10 micro-amps of current from the battery power source when operating, wireless communications within the first frequency band from a remote device at least one meter away. The wireless transceiver is further adapted to transmit—after receipt from the remote device of a first wireless communication within the first frequency band that includes an invitation for further communication—a second wireless communication in a second frequency band having frequencies above 10 MHz, the second wireless communication comprising data indicative of the physiological signal as sensed by the sensor. | 06-06-2013 |
20130150742 | SYSTEM AND METHOD OF IDENTIFYING SOURCES FOR BIOLOGICAL RHYTHMS - An example system and method of determining regularity associated with a rhythm disorder of a heart are disclosed. In accordance with the method, a derivative of a first cardiac signal at a plurality of first time points is processed against a derivative of a second cardiac signal at a plurality of second time points to define a plurality of coordinate pairs of the first cardiac signal against the second cardiac signal. Thereafter, an index of regularity that exceeds a threshold is determined. The index of regularity indicates an approximate congruence of the plurality of coordinate pairs among the first cardiac signal and the second cardiac signal. | 06-13-2013 |
20130158420 | SYSTEM AND METHOD FOR ANALYSIS AND RECONSTRUCTION OF VARIABLE PULSE-WIDTH SIGNALS WITH FINITE-RATES-OF-INNOVATION - Systems and methods are described herein for defining and parameterizing signals or system responses containing pulses of varying width. The parameters may define the signal and therefore can be equated to a compressed version of the original signal. Storage of the parameters as a compressed version of the signal requires less storage space, making storage of signals more memory efficient | 06-20-2013 |
20130165804 | THRESHOLD ADJUSTMENT SCHEMES FOR ACUTE ISCHEMIA DETECTION - A heart monitor is disclosed. The monitor computes ST segment deviations and stores the results in heart rate based histograms. Periodically, the monitor analyzes the histogram data to determine heart rate dependent acute ischemia detection thresholds. If the statistical distribution associated with a heart rate range is insufficient, the threshold for that heart rate range is set as a function of the threshold for a neighboring heart rate range. Thresholds are also increased for heart rate ranges associated with statistical distributions that are sufficient but that have a relatively small number of entries. | 06-27-2013 |
20130172763 | COMPRESSION OF ELECTROCARDIOGRAPH SIGNALS - A generally lossless compression system suitable for compression of data in a real-time, remote monitoring application is disclosed. In one embodiment, the real-time monitoring application is subject to a fixed-delay transmission constraint. In one implementation, a specific set partitioning method (e.g., binary tree partitioning) is employed on blocks of data that are wavelet transformed in a reversible manner so that encoded blocks may be transmitted losslessly or truncated and transmitted with some loss. | 07-04-2013 |
20130172764 | Methods, Devices And A Marker For Physical Condition Testing - The present invention relates to methods and devices for testing the physical condition of an individual. The methods and devices rely on the use of a marker of physical condition, and have applications including determining an individuals state of physical recovery from prior physical or athletic activity, determining an individuals physiological readiness for optimal physical performance, determining changes in the risk of (or for assessing progression of) cardiovascular disease in an individual, and for determining exercise and/or athletic training instructions for an individual based on their recovery state, physiological readiness to perform, and/or their cardiovascular disease risk status. The methods and devices require a comparison between the rate of increase in heart rate of an individual during a sub-maximal physical activity, and a predetermined reference measurement. A rate of increase in heart rate which is faster or slower than the predetermined reference measurement will allow determination of the individuals recovery state, physiological readiness to perform, and/or their cardiovascular disease risk status. | 07-04-2013 |
20130184598 | INNER AND OUTER TELESCOPING CATHETER DELIVERY SYSTEM - A catheter assembly employs an outer catheter with a pre-formed distal end and an open lumen. An inner catheter having an open lumen and a pre-formed distal end is movably disposed within the outer catheter. Relative rotation and extension of the inner and outer catheters provides the distal end of the catheter assembly with an adjustable range of two- and three-dimensional shapes. The inner catheter can include sections of varying stiffness, such that extension of the inner catheter within the outer catheter modifies the shape of the outer catheter's pre-formed distal end. One or both of the outer and inner catheters includes an occlusion balloon attached to the distal end thereof. The adjustable shaping of the catheter assembly's distal tip provides an improved system for locating and cannulating cardiac venous structures, particularly the coronary sinus via the right atrium. | 07-18-2013 |
20130184599 | NON-INVASIVE MONITORING OF PHYSIOLOGICAL CONDITIONS - This document provides methods and materials related to the non-invasive measurement of analytes in blood. | 07-18-2013 |
20130190634 | Implantable Medical Devices Using Heuristic Filtering in Cardiac Event Detection - Methods for performing cardiac signal analysis in an implanted medical device, and devices configured to perform illustrative methods of cardiac signal analysis. A cardiac signal is captured by an implanted device using implanted electrodes and, during at least certain conditions, the cardiac signal undergoes heuristic filtering. In some embodiments, heuristic filtering is achieved by modifying a signal or value that is used as an indicator of received signal amplitude. In an illustrative example, the heuristic filtering includes periodically incrementing or decrementing the signal or value toward a desired quiescent point, where the heuristic filter period is significantly longer than the sampling period for the signal itself. In another illustrative example, the heuristic filter frequency can be adjusted dynamically to keep the signal average near the desired quiescent point. | 07-25-2013 |
20130197378 | ACTIVE IMPLANTABLE MEDICAL DEVICE COMPRISING MEANS FOR THE DIAGNOSIS OF HEART FAILURE - Methods, devices, and processor-readable storage media are provided for the diagnosis of heart failure. A method in this context includes collecting, using an implantable device, reference episodes, the reference episodes comprising, at least one of: electrical activity signals of a myocardium; myocardium hemodynamic activity signals, or indicators reflecting variation of physical parameters, variation of activity, and variation of hemodynamic phases between phases of effort and phases of recovery; generating an in-suspicion model-cycle and an off-suspicion model-cycle based on the reference episodes; and determining whether to generate an early heart failure alert, based on a difference between the in-suspicion model-cycle and the off-suspicion model-cycle. | 08-01-2013 |
20130204148 | PREGNANCY TEST SYSTEM - A pregnancy test system ( | 08-08-2013 |
20130211271 | METHOD AND APPARATUS FOR ELIMINATING MOTION ARTIFACTS OF BIO SIGNAL USING PERSONALIZED BIO SIGNAL PATTERN - An apparatus for eliminating motion artifacts in a bio signal includes a bio signal acquisition unit configured to acquire a bio signal from a patient; a reconstruction signal generator configured to generate a reconstruction signal of the acquired bio signal based on a result of comparing the acquired bio signal with a bio signal pattern of the patient generated using a bio signal measured from the patient before acquiring the bio signal from the patient; and a motion artifact elimination unit configured to eliminate motion artifacts in the acquired bio signal based on a difference between the reconstruction signal and the acquired bio signal. | 08-15-2013 |
20130237867 | MODULAR USER-EXCHANGEABLE ACCESSORY FOR BIO-SIGNAL CONTROLLED MECHANISM - Modular user-exchangeable accessory for bio-signal controlled mechanism. In some embodiments, a biosensor and a feedback mechanism is disclosed. In some embodiments, a modular user-exchangeable accessory for bio-signal controlled mechanism includes detecting bio-signal using a bio-sensor; and sending a control signal to a modular user-exchangeable accessory for bio-signal controlled mechanism. In some embodiments, the biosensor is connected to a headset, wherein the modular user-exchangeable accessory is attachable to the headset. In some embodiments, the modular user-exchangeable accessory is shaped to resemble an animal ear. | 09-12-2013 |
20130237868 | APPARATUS AND METHOD OF CONTROLLING THRESHOLD FOR DETECTING PEAKS OF PHYSIOLOGICAL SIGNALS - A method of controlling a threshold for detecting peaks of physiological signals includes: obtaining a physiological signal measured from a person being examined; determining whether a peak of the physiological signals is detected based on a result of comparing the physiological signals with a threshold; and controlling the threshold based on a minimum threshold and either the threshold or a feature value of the detected peak based on a result of the determining. When a threshold for detecting peaks of physiological signals is controlled, even if an interval between the peaks is irregular or there is a large difference in values of the peaks, the peaks can be accurately detected. | 09-12-2013 |
20130237869 | MANAGEMENT OF CARDIAC DATA TRANSMISSIONS - A medical alarm communications system comprises a pager like device to be kept near a patient. The pager like device communicates medical alerts regarding the patient to a remote central station, which can provide therapeutic and/or diagnostic assistance by communicating to the pager like device. When the pager like device determines that an alert should be sent to the central station, it attempts to establish communication with the central station according to a primary communication protocol. If this attempt is unsuccessful according to some predetermined criteria (e.g. too much time has elapsed before communication is established), then the pager like device generates a message to the patient indicative of the failure, and The attempts to establish communication with the central station according to a secondary communication protocol. | 09-12-2013 |
20130237870 | AUTOMATED IDENTIFICATION OF OCCLUSION LOCATION IN THE CUPRIT CORONARY ARTERY - A diagnostic ECG system analyzes lead traces for evidence of ST elevation in the lead signals. The pattern of ST elevation in leads having predetermined vantage points to the electrical activity of the heart and, in some instances, the presence of ST depression in certain other leads, identifies a specific coronary artery or branch as the culprit coronary artery for an acute ischemic event. ECG measurements which are associated with the identity of specific arterial occlusion locations are calculated and used to form a classifier of the probability of occlusion at different locations. The location identified as having the highest probability is indicated to a user as the most likely occlusion location. | 09-12-2013 |
20130245470 | STATE DETECTION DEVICE, ELECTRONIC APPARATUS, MEASUREMENT SYSTEM AND PROGRAM - A state detection device includes an acquisition part that acquires an acceleration detection value from an acceleration sensor, and a judgment part that judges a running state or a walking state based on the acceleration detection value. The judgment part detects as to whether a positive/negative sign of the acceleration detection value in a first axis reversed in a predetermined judgment period, determines the running state when the sign reverses, and determines the walking state when the sign does not reverse. | 09-19-2013 |
20130245471 | SYSTEM AND METHOD FOR ANALYSIS AND RECONSTRUCTION OF VARIABLE PULSE-WIDTH SIGNALS HAVING LOW SAMPLING RATES - Systems and methods are described herein for applying a predefined functional shape to coefficients of a discrete Fourier transform of a waveform. The waveform may based, at least in part, on an electro-cardiogram (ECG). The predefined functional shape may be parabolic, and may be defined on a logarithmic scale. The application of a predefined functional shape may allow a more accurate reconstruction of a waveform to be generated at a lower sampling rate. | 09-19-2013 |
20130245472 | CONTROLLING ACCESS TO A MEDICAL MONITORING SYSTEM - Systems and techniques for remote medical monitoring. In one implementation, a method includes monitoring a first medical condition of an individual, the monitoring being initiated remotely by a monitoring service, receiving a query relating to a second medical condition of the individual, transmitting a response to the query to the monitoring service, receiving a prompt from the monitoring service, and transmitting a response to the prompt to the monitoring service. The query is received from the monitoring service. The prompt is designed to provoke a particular action. | 09-19-2013 |
20130245473 | SYSTEM AND METHODS FOR ASSESSING HEART FUNCTION - Systems and methods can be used to provide an indication of heart function, such as an indication of mechanical function or hemodynamics of the heart, based on electrical data. For example, a method for assessing a function of the heart can include determining a time-based electrical characteristic for a plurality of points distributed across a spatial region of the heart. The plurality of points can be grouped into at least two subsets of points based on at least one of a spatial location for the plurality of points or the time-based electrical characteristics for the plurality of points. An indication of synchrony for the heart can be quantified based on relative analysis of the determined time-based electrical characteristic for each of the at least two subsets of points. | 09-19-2013 |
20130253349 | AUTOMATED ANALYSIS OF COMPLEX FRACTIONATED ELECTROGRAMS - A method for mapping abnormal electrical activity, including obtaining electrical signal data from respective locations in a heart of a living subject, and automatically analyzing the signal data to identify complex fractionated electrograms (CFEs) therein. The method further includes analyzing the CFEs so as to identify reentry locations comprised in the respective locations, and displaying information derived from the identification in relation to a map of the heart. | 09-26-2013 |
20130253350 | METHOD AND APPARATUS FOR RECOGNIZING SENSED CARDIAC EVENTS USING DIFFERENT ELECTRODE CONFIGURATIONS - A system senses a cardiac signal for diagnostic and/or therapy control purposes using a first set of electrodes and switches to a different second set of electrodes for recognizing cardiac events in the cardiac signal. In various embodiments, the cardiac signal sensed using the second set of electrodes is compared to the cardiac signal sensed using the first set of electrodes, and the cardiac events in the cardiac signal are each recognized using an outcome of the comparison. | 09-26-2013 |
20130253351 | MONITORING VARIATION PATTERNS IN PHYSIOLOGICAL PARAMETERS ASSOCIATED WITH MYOCARDIAL INSTABILITY - A method of analyzing myocardial instability includes obtaining a physiological parameter representative of myocardial behavior over a set of cardiac cycles and determining reversal points in the physiological parameter over the set of cardiac cycles. The method also includes identifying myocardial instability based on the reversal points in the physiological parameter. A reversal point may correspond to a value of the physiological parameter, during a current cardiac cycle, that exceeds or is less than the values of the physiological parameter during prior and subsequent cardiac cycles. Optionally, the method includes calculating differences between values of the physiological parameter for consecutive cardiac cycles and detecting the reversal points when a current difference exceeds or is less than differences for prior and subsequent cardiac cycles. | 09-26-2013 |
20130253352 | METHOD AND SYSTEM FOR IDENTIFYING A POTENTIAL LEAD FAILURE IN AN IMPLANTABLE MEDICAL DEVICE - A method for detecting potential failures by an implantable medical lead is disclosed. The method includes sensing first, second and third signals between at least first and second combinations of electrodes, on the lead; determining whether at least one of the first, second and third signals is representative of a potential failure in the lead and identifies a failure and the electrode associated with the failure based on which of the first, second and third sensed signals is representative of the potential failure. Optionally, when the first and second sensed signals are both representative of the potential failure, the method further includes determining whether the first and second sensed signals are correlated with one another. When the first and second sensed signals are correlated, the method declares an electrode common to both of the first and second combinations to be associated with the failure. | 09-26-2013 |
20130267860 | SEED-BEAT SELECTION METHOD FOR SIGNAL-AVERAGED ELECTROCARDIOGRAPHY - An improved method for selection of a seed beat for performing signal averaging on electrocardiograms (“ECGs”). The invention improves upon the prior art by extending the search for seed beats further into the electrocardiogram time-series and by searching all three orthogonal electrocardiographic channels. The method successfully locates seed beats even in suboptimal ECGs dramatically improving the success rate for analyzing ECGs eliminating the need to re-perform ECG analysis thus improving efficiency and reducing delay in discovery of dangerous arrhythmias. | 10-10-2013 |
20130281870 | CARDIAC ACTIVATION TIME DETECTION - A method for characterizing an electrocardiogram, including receiving a first unipolar signal from a first location of a heart and a second unipolar signal from a second location of the heart. The method further includes generating a bipolar signal from the first and second unipolar signals, and analyzing the bipolar signal to delineate a time period during which the first and second locations generate a bipolar complex. The method also includes analyzing the first unipolar signal within the time period to determine an activation time of the first location. | 10-24-2013 |
20130289424 | SYSTEM FOR PROCESSING PHYSIOLOGICAL DATA - Physiological signals such as ECG signals are obtained from a patient. In accordance with one or more embodiments, an apparatus, system and/or method is directed to at least two ECG sensing electrodes that adhere to remote locations on a patient and sense ECG signals from the patient. An amplifier circuit amplifies the sensed ECG signals to provide amplified ECG signals, and a digitizing circuit digitizes the amplified ECG. A computing circuit processes the digitized ECG signals (e.g., by removing noise). A battery powers the aforesaid circuits, and a housing houses the battery and aforesaid circuit. A fastener mechanically fastens and electrically couples the housing to one of the electrodes, and the other electrodes are coupled to the amplifier via a flexible insulated lead wire. | 10-31-2013 |
20130296725 | SYSTEMS AND METHODS FOR DETECTION OF THE SUPERIOR VENA CAVA AREA AND THE CAVOATRIAL JUNCTION - Described herein are systems, devices and methods to increase the accuracy of intravascular catheter placement, and to improve electrocardiogram (ECG), intravascular electrogram, and ultrasound Doppler signal processing to detect the Superior Vena Cava (SVC) area. Embodiments of the invention are intended to place an intravascular catheter within the lower ⅓ of SVC to the junction of the SVC and the right atrium (RA)—called the cavoatrial junction (CAJ). In particular, the improved accuracy of CAJ location detection during an intravascular catheter placement can be provided by optimization of ECG parameters and ultrasound Doppler signal using Neuro-Fuzzy logic and/or other processing techniques. | 11-07-2013 |
20130317376 | Electrocardiogram Reconstruction from Implanted Device Electrograms - A method of reconstruction of the standard 12-lead surface EKG given values of the electrical potential from an implanted medical device is described. This implanted device can be oriented in an arbitrary fashion and reconstruction technique is obtained through physical measurement of the orientation of the implanted device or correlation with a standard 12-lead EKG obtained from the patient. | 11-28-2013 |
20130324867 | IMPLANTABLE CARDIAC SYSTEMS WITH BASELINE CORRECTION IN RESPONSE TO NOISE DETECTION - Implantable cardiac devices and methods of their use. A method of operation in an implantable cardiac device may include steps for characterizing detected events as noise or not noise, identifying a set of consecutive noise events or a threshold quantity of noise events in a set period of time and declaring a noisy series to have occurred. In response to the declaration of a noisy series, the method initiates a baseline correction algorithm. Devices for performing such methods are also disclosed. | 12-05-2013 |
20130338516 | Multi-Function Health Monitor - A multi-function health monitor is capable of performing a resting 12-lead ECG test, an ECG stress test, a 24-hour holter monitor evaluation and or a 30-day MCT monitoring. Using only 3 electrodes, the multifunction health monitor derives 6 channels (Limb leads & Augmented leads) of data with the noise cancellation (ground) effect of a virtual dynamic RL electrode. An electrode resistivity measurement system quantifies and may compensate for increasing resistance the electrodes and the patient that results from the length of time the electrodes are installed on a patient. The multi-function health monitor can provide data analysis through the gate array as the data is acquired. Data may also be stored for remote analysis as well as for transmission to remote stations upon occurrence of one or more threshold events. Parameters for threshold events may be adjusted remotely to obviate the need for a patient to travel for system adjustment. | 12-19-2013 |
20130338517 | Method of Locating the Tip of a Central Venous Catheter - A method of locating a tip of a central venous catheter (“CVC”) having a distal and proximal pair of electrodes disposed within the superior vena cava, right atrium, and/or right ventricle. The method includes obtaining a distal and proximal electrical signal from the distal and proximal pair of electrodes and using those signals to generate a distal and proximal P wave, respectively. A deflection value is determined for each of the P waves. A ratio of the deflection values is then used to determine a location of the tip of the CVC. Optionally, the CVC may include a reference pair of electrodes disposed within the superior vena cava from which a reference deflection value may be obtained. A ratio of one of the other deflection values to the reference deflection value may be used to determine the location of the tip of the CVC. | 12-19-2013 |
20130345577 | AUGMENTED SIGNAL VECTOR ANALYSIS TO SUPPRESS GLOBAL ACTIVATION DURING ELECTROPHYSIOLOGY MAPPING - Electrical activity propagation along an electrode array within a cardiac chamber is reconstructed. Signals are sampled from the electrode array including signals from a channel of interest. An N-dimensional signal vector is then constructed using signals from N neighboring channels referenced to the channel of interest. A change in the N-dimensional signal vector over time is then determined and compared to a predetermined threshold to establish whether local activation has occurred on the channel of interest. | 12-26-2013 |
20130345578 | Wearable Motion Sensing Device - A wearable motion sensing device is disclosed. One embodiment of the wearable motion sensing device includes a motion sensor, and a pendant that is attached to the wearable motion sensing device, wherein the pendant is attached to the wearable motion sensing device at a location of the wearable motion sensor relative to the motion sensor that when worn by a human being, a mass of the pendant urges the motion sensor towards the human being. | 12-26-2013 |
20130345579 | SYSTEM AND METHOD OF DETECTING ABNORMAL MOVEMENT OF A PHYSICAL OBJECT - The present application discloses a method of detecting abnormal movement of a physical object. A periodic signal is representative of the movement of the object. According to some embodiments, a raw matrix having a first array and a second array is generated, and then an integrated matrix is generated by performing a dimension reduction on the raw matrix. A likelihood of a predetermined type of abnormal movement of the physical object is determined by comparing the integrated matrix with a predetermined benchmark pattern. In some embodiments, the generation of the raw matrix includes performing a first analysis on a predetermined portion of the periodic signal to generate the first array and performing a second analysis different from the first analysis on the predetermined portion of the periodic signal to generate the second array. | 12-26-2013 |
20130345580 | RECONSTRUCTION OF A SURFACE ELECTROCARDIOGRAM FROM AN ENDOCARDIAL ELECTROGRAM USING NON-LINEAR FILTERING - The present invention relates to an active medical device that uses non-linear filtering for reconstructing a surface electrocardiogram from an endocardial electrogram. At least one endocardial EGM electrogram signal is collected from of samples collected from at least one endocardial or epicardial derivation (71′, 72′, 73′), and at least one of a reconstructed surface electrocardiogram (ECG) signal through the processing of collected EGM samples by a transfer function (TF) of a neural network (60′). The neural network (60′) is a time-delay-type network that simultaneously processes said at least one endocardial EGM electrogram signal, formed by a first sequence of collected samples, and at least one delayed version of this EGM signal, formed by a second sequence of collected samples distinct from the first sequence collected samples. The neural network (60′) provides said reconstructed ECG signal from the EGM signal and its delayed version. | 12-26-2013 |
20140012148 | APPARATUS AND METHOD FOR DETECTING MYOCARDIAL ISCHEMIA USING ANALYSIS OF HIGH FREQUENCY COMPONENTS OF AN ELECTROCARDIOGRAM - ECG apparatus comprises an ECG input for obtaining ECG signals; a high frequency analyzer configured for obtaining high frequency QRS components from a QRS complex within said ECG signals and identifying therein at least one reduced amplitude zone—RAZ—present within a given QRS complex; and a RAZ quantifier configured for obtaining a quantification of said at least one RAZ region within said QRS complex. | 01-09-2014 |
20140031706 | MEDICAL SYSTEM - A high-frequency output apparatus and an ultrasound output apparatus, which are medical apparatuses, each has a CPU, a communication circuit and a speaker. Each CPU transmits, when an output volume level of a sound outputted from its own speaker is changed, information about the changed output volume level to the other medical apparatus from the communication circuit, and controls output volume of the sound outputted from its own speaker on the basis of output volume information about a sound outputted of the speaker of the other apparatus, which has been received in the communication circuit. | 01-30-2014 |
20140039330 | SYSTEM AND METHOD FOR OBSERVING HEART RATE OF PASSENGER - A system and method is provided for observing a heart rate of a passenger. The system for observing a heart rate of a passenger includes a plurality of different types of heart rate sensors provided on a seat cushion or a seat back, and a control unit for collecting waveforms of the heart rate sensors for respective sensor types, computing accuracies of the waveforms for respective sensor types at each unit time, selecting a waveform having a highest accuracy at each unit time, and then calculating a heart rate. | 02-06-2014 |
20140039331 | DETECTING OR VALIDATING A DETECTION OF A STATE CHANGE FROM A TEMPLATE OF HEART RATE DERIVATIVE SHAPE OR HEART BEAT WAVE COMPLEX - Methods, systems, and apparatus for detecting and/or validating a detection of a state change by matching the shape of one or more of an cardiac data series, a heart rate variability data series, or at least a portion of a heart beat complex, derived from cardiac data, to an appropriate template. | 02-06-2014 |
20140046203 | ALGORITHM FOR DETECTING A SEIZURE FROM CARDIAC DATA - Methods, systems, and apparatus for detecting the seizure in a patient using a medical device. The determination is performed by collecting cardiac data determining valid heart beats suitable for seizure detection from the cardiac data; calculating heart rate data of interest from the valid heart beats; and identifying a seizure event from the heart rate data. The medical device may then take a responsive action, such as warning, logging the time of the seizure, computing and storing one or more seizure severity indices, and/or treating the seizure. | 02-13-2014 |
20140066795 | CONTINUOUS ASSESMENT OF ECG SIGNAL QUALITY - A method and system for assessing an electrocardiogram (ECG) signal quality are disclosed. In a first aspect, the method comprises determining a Kurtosis calculation of the ECG signal and determining whether the Kurtosis calculation satisfies a first threshold to continuously assess the ECG signal quality. In a second aspect, the system comprises a wireless sensor device coupled to a user via at least one electrode, wherein the wireless sensor device includes a processor and a memory device coupled to the processor, wherein the memory device stores an application which, when executed by the processor, causes the processor to determine a Kurtosis calculation of the ECG signal and to determine whether the Kurtosis calculation satisfies a first threshold to continuously assess the ECG signal quality. | 03-06-2014 |
20140073979 | eCard ECG Monitor - Portable ECG (electrocardiograph) monitoring device combinations that records, transmits and displays sampled ECG data from handheld devices having sensors and integrated electronics housed in a card-like member for determining and displaying a user's processed ECG for medical diagnostic and informational purposes. The monitoring device of the present invention records and wirelessly transmits raw sampled ECG data from the handheld sampling device and optionally additional wireless ECG sensors to a remotely associated display device for processing and analyzing the raw data thereby shifting processing overhead from the handheld device to the display device. | 03-13-2014 |
20140094706 | MEDICAL DEVICE FOR POSITIONING OF A LEAD - The present invention relates generally to medical devices for electrode positioning during implantation procedures. A cardiac signal measuring device measures cardiac signals sensitive to inherent differences between cardiac tissue and blood using at least one electrode of a medical lead arranged at a distal tip of the medical lead and at least a second electrode arranged at a distance from the distal electrode and being connectable to the measuring unit. An analyzing module acquires cardiac signals measured during predetermined measurement sessions. The analyzing module determines at least one cardiac signal value based on the cardiac signals for each measurement session and analyzes changes of the cardiac signal values between different measurement sessions to determine a position of the electrode relative a tissue border. A maximum of the change of the cardiac signal values between two successive measurement sessions indicates that the electrode has reached the tissue border. | 04-03-2014 |
20140094707 | WEARABLE APPARATUS FOR MEASURING HEART-RELATED PARAMETERS AND DERIVING HUMAN STATUS PARAMETERS FROM SENSED PHYSIOLOGICAL AND CONTEXTUAL PARAMETERS - A monitor device and associated methodology are disclosed which provide a self contained, relatively small and continuously wearable package for the monitoring of heart related parameters, including ECG. The detection of heart related parameters is predicated on the location of inequipotential signals located within regions of the human body conventionally defined as equivalent for the purpose of detection of heart related electrical activity, such as on single limbs. Amplification, filtering and processing methods and apparatus are described in conjunction with analytical tools for beat detection and display. | 04-03-2014 |
20140100465 | ECG SENSING APPARATUS AND METHOD FOR REMOVAL OF BASELINE DRIFT IN THE CLOTHING - An ECG sensing apparatus and a method for removing a baseline drift in the clothing are provided. The ECG sensing apparatus filters ECG signals and filters a baseline drift noise which is caused by human body's motion and breathing. Accordingly, the baseline drift in the sensing apparatus is minimized even if there is a free motion. | 04-10-2014 |
20140100466 | ELECTROCARDIOGRAM ANALYZER AND ELECTRODE SET - An electrocardiogram analyzer includes: one set of electrocardiogram measurement electrodes; one or more noise measurement electrode; a measurer which is configured to measure an electrocardiogram signal acquired by the electrocardiogram measurement electrodes, and a noise signal acquired by at least the noise measurement electrode; and an electrocardiogram extraction analyzer which is configured to extract a noise-removed electrocardiogram in which noise is removed, based on the electrocardiogram signal and the noise signal. | 04-10-2014 |
20140100467 | BODY WORN PHYSIOLOGICAL SENSOR DEVICE HAVING A DISPOSABLE ELECTRODE MODULE - A method for providing high voltage circuit protection for a patient monitor. The method includes providing a substrate that supports one or more electrical connections to a patient's body. The method further includes determining a print pattern and thickness of a first material having a first resistivity to be printed on the substrate, determining a print pattern and thickness of a second material having a second resistivity to be printed on the substrate, printing the first material onto the substrate, and printing the second material onto the substrate wherein at least part of the second the material overlays the first material. | 04-10-2014 |
20140107507 | DETERMINING ONSETS AND OFFSETS OF CARDIAC DEPOLARIZATION AND REPOLARIZATION WAVES - In one example, a method includes determining a slope of a cardiac electrogram. The method may also include determining a threshold value based on a maximum of the slope of the cardiac electrogram. The method may further include identifying a last point of the cardiac electrogram before the slope of the cardiac electrogram crosses the threshold as one of an onset or an offset of a wave. In another example, the method further includes receiving an indication of local ventricular motion associated with a cardiac contraction, and determining an electromechanical delay between the identified onset and the local ventricular motion. Some examples include providing the electromechanical delay for configuration of cardiac resynchronization therapy. | 04-17-2014 |
20140107508 | ELECTRODE DISPLACEMENT DETERMINATION - Methods and systems for determining whether a location of multiple current injecting electrodes has changed are disclosed herein. | 04-17-2014 |
20140121548 | FREQUENCY-ADAPTIVE NOTCH FILTER - One apparatus includes a notch filter that has a state observer unit and a parameter adaptation unit. The state observer unit is configured to receive a sampled noisy electrical signal and a sampled filtered electrical signal, the state observer unit having an estimated noise signal output, the estimated noise signal output carrying an estimated noise signal to be subtracted from the sampled noisy electrical signal, resulting in the filtered electrical signal. The parameter adaptation unit is configured to receive the estimated noise signal and an error signal from the state observer unit. The parameter adaptation unit is also configured to determine, based on the estimated noise signal and the error signal, an updated estimated noise frequency, thereby causing the state observer unit to generate an updated estimated noise signal to be provided on the estimated noise signal output. | 05-01-2014 |
20140121549 | METHOD AND APPARATUS FOR DETERMINING THE MYOCARDIAL INOTROPIC STATE - A method for determining myocardial inotropic state is described. The method involves receiving a value of stretch for different myocardial segments during passive filling, e.g. atrial contraction, and receiving associated values representative of total systolic strain. The method also involves using a relationship between the stretch of different myocardial segments during atrial contraction and the associated values representative for total systolic strain as an index of the myocardial inotropic state. A corresponding system and computer program product also is described. | 05-01-2014 |
20140121550 | COMPUTERIZED SYSTEMS AND METHODS FOR STABILITY-THEORECTIC PREDICTION AND PREVENTION OF SUDDEN CARDIAC DEATH - Systems, methods and computer-readable media are provided for automatic identification of patients according to near-term risk of ventricular arrhythmias and sudden cardiac death (SCD). Embodiments of the invention are directed to event prediction, risk stratification, and optimization of the assessment, communication, and decision-making to prevent SCD, and in one embodiment take the form of a platform for wearable, mobile, unteathered monitoring devices with embedded decision support. Thus embodiments relate to automatically identifying persons at risk for arrhythmias and SCD through the use of noninvasive, portable, wearable electronic device and sensors equipped with signal-processing software and statistical predictive algorithms that calculate stability-theoretic measures derived from the digital electrocardiogram timeseries acquired by the device. The measurements and predictive algorithms embedded within the device provide for unsupervised use in the home or in general acute-care and chronic-care venues and afford a degree of robustness against variations in individual anatomy and sensor placement. | 05-01-2014 |
20140135636 | BIOSIGNAL TRANSMITTER, BIOSIGNAL RECEIVER, AND METHOD OF TRANSMITTING AND RECEIVING BIOSIGNAL - Technology for transmitting and receiving a biosignal based on a pattern related to the biosignal and a feature point included in the biosignal. A biosignal transmitter includes a biosignal obtaining unit configured to obtain a biosignal comprising a plurality of unit signals, a parsing unit configured to parse the biosignal to extract a first unit signal of the plurality of unit signals, a pattern obtaining unit configured to obtain a pattern related to the biosignal based on the first unit signal, and a transmitting unit configured to transmit information related to a feature point of the first unit signal based on the first unit signal and the pattern. | 05-15-2014 |
20140135637 | System And Method For Monitoring a Patient Status - A system and method for automated diagnosis of myocardial ischemia through remote monitoring is described. Physiological measures comprising data either recorded on a regular basis by a medical device or derived therefrom is stored. Qualitative measures associated with the physiological measures are matched. Indications of myocardial ischemia are remotely identified. The qualitative measures for both of a reduction in exercise capacity and respiratory distress occurring contemporaneously are examined. The qualitative measures for angina that accompanies the reduction in exercise capacity and the respiratory distress are evaluated. A time course for each of the indications is determined. A patient status is formed comprising an onset of myocardial ischemia conditioned on the time course comprising a short duration. | 05-15-2014 |
20140142447 | DETECTION CIRCUIT - An amplifier circuit includes first and second amplification units. A first detection electrode and a high impedance circuit are connected to the input terminal of the first amplification unit. A second detection electrode and a high impedance circuit are connected to the input terminal of the second amplification unit. The output terminals of the first and second amplification units output first and second output signals, and are connected to the input terminals of a differential amplifier circuit through coupling capacitors, respectively. The differential amplifier circuit operates a difference between the first and second output signals in a state where a direct-current component is omitted. | 05-22-2014 |
20140148714 | AUTOMATIC ONLINE DELINEATION OF A MULTI-LEAD ELECTROCARDIOGRAM BIO SIGNAL - Method for automatic online delineation of an electrocardiogram (ECG) bio signal, said method comprising the detection of said bio signal through several leads followed by the combination of those multiple acquisitions into a single root-mean-squared (RMS) curve, said RMS curve being then undergoing a real-time single-lead delineation based on a mathematical processing. | 05-29-2014 |
20140148715 | PERSONAL BIOSENSOR ACCESSORY ATTACHMENT - Techniques for providing a personal biosensor accessory attachment are disclosed. In some embodiments, a personal biosensor accessory attachment system is disclosed. In some embodiments, a personal biosensor accessory attachment system includes a biosensor for detecting a bio-signal; and a personal biosensor device that is adapted to securely hold the biosensor, in which the personal biosensor device can be adapted to be mechanically secured to a plurality of computing devices. | 05-29-2014 |
20140148716 | ACUTE ISCHEMIA DETECTION BASED ON PARAMETER VALUE RANGE ANALYSIS - A heart monitor is disclosed. The monitor computes ST segment deviations and stores the results in heart rate based histograms. Periodically, the monitor analyzes the histogram data to determine a normal range of ST deviation for a particular heart rate range. The monitor computes heart rate dependent ischemia detection thresholds based on the upper and lower boundaries of the normal range. | 05-29-2014 |
20140155771 | UNIVERSAL MEDICAL DEVICE CONTROL CONSOLE - A control console is disclosed for controlling one or more medical devices. The control console communicates to at least one medical device, and at least one peripheral module associated with the medical device if needed. The control console has a microprocessor for processing data to direct an operation of the medical device. | 06-05-2014 |
20140163406 | SYSTEM FOR ANALYZING A CONDITION OF AN ANIMAL - A system for analyzing a condition of an animal, wherein the system includes at least an identification unit ( | 06-12-2014 |
20140180148 | ECG Adapter System and Method - An electrocardiograph (ECG) adapter including an adapter body having a first end and a second end is presented. A monitor connector is positioned at the first end of the adapter body, the monitor connector adapted for coupling to an input of an ECG monitor. A first lead receptacle is positioned at the second end of the adapter body, the first lead receptacle configured to receive a first connector having a first pin configuration. A second lead receptacle is positioned at the second end of the adapter body, the second lead receptacle located adjacent the first lead receptacle and configured to receive a second connector having a second pin configuration different from the first pin configuration. | 06-26-2014 |
20140187989 | ESTIMATING RESTITUTION CURVES IN AN ANATOMICAL MAPPING SYSTEM - A method for mapping an anatomical structure includes sensing activation signals of physiological activity with a plurality of electrodes disposed in or near the anatomical structure, each activation signal having an associated cycle length, estimating an action potential duration and diastolic interval for each cycle length, generating a restitution curve based on the estimated action potential duration and diastolic interval from a preceding cycle length, iteratively optimizing each estimated action potential duration and corresponding diastolic interval to maximize a functional relationship between the estimated action potential duration and estimated diastolic interval from preceding cycle length, and generating an action potential duration restitution curve based on the optimized action potential durations and diastolic intervals. | 07-03-2014 |
20140194758 | SYSTEM AND METHOD FOR EVALUATING AN ELECTROPHYSIOLOGICAL SIGNAL - A method of evaluating an electrophysical signal. The method utilizes a model-derived reconstruction over at least one cycle of the electrophysical signal to identify a pathological event, whereby at least one term in the model is differentiable. The invention is also directed to a non-transitory computer readable medium having instructions stored thereon for identifying a pathological event from a model-derived reconstruction of an electrophysical signal. The invention is further directed to a system for evaluating an electrophysical signal. The system includes a processor configured to identify a pathological event from a model-derived reconstruction of the electrophysical signal, a data input coupled to the processor for providing the processor with the electrophysical signal, and a user interface. | 07-10-2014 |
20140194759 | METHOD AND APPARATUS FOR SELECTING DIFFERENTIAL INPUT LEADS - An physiological data acquisition apparatus includes three or more leads, at least one AC current source, a switching mechanism structured to selectively couple the current source to selected lead pairs to inject an AC current across the selected lead pairs which produces an AC voltage across the selected lead pair, and a processing device. The processing device is structured to (i) determine an impedance across the current selected lead pair based on the AC voltage, (ii) determine whether the impedance is less than a predetermined threshold, (iii) if the impedance is less than the predetermined impedance threshold cause the current selected lead pair to be used for generating physiological parameter data, and (iv) if the impedance is not less than the threshold cause the switching mechanism to couple the at least one AC current source to a new selected pair of the leads. | 07-10-2014 |
20140194760 | METHODS AND SYSTEMS FOR ELECTRODE PLACEMENT - Described herein are systems, devices and methods for guiding placement of electrodes, and particularly ECG electrodes on a patient. A picture of the patient's body the patient can be analyzed to determine where on the patient's body to place electrodes according to a predetermined, conventional or standard placement pattern. The methods, devices and systems may then guide a user in positioning or correcting the position of electrodes on the patient. For example, an image of the patient may be provided showing the correct position of the electrodes, which may act as a patient-specific map or guide. The electrode placement positions can correspond to conventional or standard 12-lead ECG electrode positions. | 07-10-2014 |
20140194761 | METHOD AND APPARATUS FOR MONITORING BIOSIGNAL WITH LOW POWER CONSUMPTION - A method of monitoring a biosignal includes receiving a biosignal and a reference signal, determining a signal state of the biosignal based on the reference signal, and analyzing the biosignal using an analysis technique having a resource consumption depending on the signal state. | 07-10-2014 |
20140200469 | NON-CONTACT ELECTROCARDIOGRAM SYSTEM - A non-contact electrocardiogram (ECG) sensor having an ECG electrode and guard electrode coupled to an electronic circuit that actively gain-corrects the electrocardiogram signal based on fringe capacitance signal and filters the gain-corrected signal based on a static charge reference signal. The compensation system first makes a gain correction for the preamplifier to address ECG electrode-to-subject motion and then removes any additive static common mode interference from motion-induced static charge generation. | 07-17-2014 |
20140200470 | Reconfigurable Sensor Devices Monitoring Physical Exercise - The present document discloses an apparatus comprising at least one processor and at least one memory including a computer program code. The at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus to: trigger a start of a physical exercise; in response to said triggering, start a measurement mode in which the apparatus receives measurement data of the physical exercise wirelessly from at least one sensor device and analyses the received measurement data; detect a predetermined event in the received measurement data during the physical exercise; and in response to detecting said predetermined event, cause transmission of a reconfiguration message to at least one of the at least one sensor device to reconfigure at least one parameter of said at least one of the at least one sensor device. | 07-17-2014 |
20140213919 | Systems and Methods for Detecting a Physiological Abnormality in a Patient by Using Cardiac or Other Chaos in Combination with Non-increasing Parasympathetic Modulation - A method and associated apparatus combine a calculation of chaos of a quantifiable cardiac characteristic associated with a patient with a measurement of a non-increasing parasympathetic activity of the patient to detect a physiological abnormality of the patient. | 07-31-2014 |
20140213920 | Energy Expenditure Computation Based On Accelerometer And Heart Rate Monitor - An activity monitor such as a wrist-worn device has an accelerometer which continuously detects motion of the user. The activity monitor also has an on-demand heart rate monitor which is activated by the user touching it from time to time. A calorie expenditure based on the motion of the user can be modified based on a heart rate measurement. Further, a determination can be made as to whether the user has made repetitive motions for a period of time. If the repetitive motions are detected, a calorie expenditure based on the heart rate is determined and compared to the calorie expenditure based on the user motion, and the higher value prevails. A situation is avoided in which the activity monitor underestimates the calories expended, such as when the user is exercising strenuously but the accelerometer indicates relatively little motion, e.g., during strength training. | 07-31-2014 |
20140221856 | ECG Leadwire System With Noise Suppression and Related Methods - A noise-suppressing electrocardiograph (ECG) adapter having a first end, a second end, and a noise-suppression element is presented, together with an ECG noise-suppressing system and related methods. In an embodiment, the noise-suppressing ECG adapter includes a housing having at least one first connector disposed at a first end of the housing adapted to electrically couple with an ECG lead set, and at least one second connector adapted for coupling to an input of an ECG device. The adapter includes a noise suppression element. The noise suppression element includes a ferromagnetic element having an opening defined therein. In an embodiment the noise suppression element is internal to the adapter. In another embodiment, the noise suppression element is tethered externally to the adapter and configured to clamp around at least a portion of an ECG leadwire. | 08-07-2014 |
20140236030 | ECG Rhythym Advisory Method - A method of automatically determining which type of treatment is most appropriate for a cardiac arrest victim, the method comprising transforming one or more time domain electrocardiogram (ECG) signals into a frequency domain representation comprising a plurality of discrete frequency bands, combining the discrete frequency bands into a plurality of analysis bands, wherein there are fewer analysis bands than discrete frequency bands,
| 08-21-2014 |
20140243693 | ELECTRONIC DEVICE, HEART-RATE RECEIVING METHOD AND PROGRAM - An electronic device to further reduce power consumption is provided. The electronic device includes a receiving circuit which receives a heart rate signal transmitted from a heart rate measurement device, a noise detection unit which determines whether the receiving circuit normally receives the heart rate signal or not, and a receiving circuit control unit which allows the receiving circuit to be intermittently operated when the noise detection unit determines that the heart rate signal is not received continuously for a given period of time. | 08-28-2014 |
20140243694 | BODY WORN PHYSIOLOGICAL SENSOR DEVICE HAVING A DISPOSABLE ELECTRODE MODULE - A body-worn patient monitoring device includes providing a substrate that supports one or more electrical connections to a patient's body. The method further includes determining a print pattern and thickness of a first material having a first resistivity to be printed on the substrate, determining a print pattern and thickness of a second material having a second resistivity to be printed on the substrate, printing the first material onto the substrate, and printing the second material onto the substrate wherein at least part of the second the material overlays the first material. | 08-28-2014 |
20140249436 | Fetal Monitoring Device and Method - A fetal monitoring device includes a piezofilm sheet, a first electrode, and a second electrode. A controller is operably connected to the piezofilm sheet, first electrode, and second electrode and receives a biopotential and a piezofilm signal. The controller derives at least one of a maternal heart rate and a uterine activity for the biopotential and derives at least one of a fetal heart rate and fetal motion detection from the piezofilm signal. The controller derives an index of fetal health and operate an indicator to present the derived index of fetal health. | 09-04-2014 |
20140257118 | METHODS AND SYSTEMS FOR RECOMMENDING AN APPROPRIATE PHARMACOLOGICAL TREATMENT TO A PATIENT FOR MANAGING EPILEPSY AND OTHER NEUROLOGICAL DISORDERS - The present invention provides systems and methods for managing epilepsy. In one embodiment, a method of the present invention characterize a patient's propensity for a future epileptic seizure and communicates to the patient and/or a health care provider a therapy recommendation. The therapy recommendation is typically a function of the patient's propensity for the future epileptic seizure. | 09-11-2014 |
20140257119 | Patient Electrode Impedance Measurement - An apparatus and method is provided that determines a connection quality of an electrode to a patient. A current source is connected to a first electrode and a switch is connected to a second electrode for selectively connecting the second electrode to ground. A processor is connected to the first electrode and a third electrode and the processor detects a voltage difference between the first electrode and the third electrode upon application of a current to the first electrode by the current source to determine connection quality data for the first electrode. | 09-11-2014 |
20140276153 | ECG Calculation Method for Use in Generating 12 Lead ECG Measurements from Devices That Have Less Than 10 Electrodes - A method for generating an ECG measurement associated with a point on a patient's body such as one of the precordial points is disclosed for use with an apparatus that cannot make contact with the leg and the point simultaneously. The method includes simultaneously recording a hand signal and a leg signal during a first time period. The hand signal is also measured during a second time period together with a chest signal corresponding to one of the precordial points. A signal representing the leg signal in the second time period is then computed from the first time period data. A reference signal is then generated from the hand signal and computed leg signal during the second time period. The reference signal is then combined with the chest signal to provide the corresponding precordial signal. | 09-18-2014 |
20140276154 | CARDIAC SIGNAL RECORDING USING DYNAMICALLY GENERATED DETECTION THRESHOLDS - A medical device includes a housing configured for implantation within a body of a patient, and detection circuitry disposed in the housing and coupled to an electrode arrangement. The detection circuitry is configured to sense cardiac signals from the patient. A processor is coupled to the detection circuitry. The processor is configured to compare the cardiac signals to an initial detection threshold, automatically generate an additional detection threshold in response to a predetermined number of the cardiac signals meeting or exceeding the initial detection threshold or a previously generated detection threshold, count each occurrence of a cardiac signal meeting or exceeding each of the respective detection thresholds, and record cardiac signal data only for a cardiac signal that meets or exceeds the highest of the detection thresholds. | 09-18-2014 |
20140288449 | Method, System and Software Product for the Measurement of Heart Rate Variability - The invention relates to a method, system, and software product for measuring heart rate variability. The method comprises instructing a user when to breathe in and breathe out, receiving a signal from a sensor responsive to the heart beat of the user, processing the received signal to determine heart beat intervals of the user and calculating a measure of heart rate variability of the user from the processed heart beat intervals. | 09-25-2014 |
20140288450 | ECG Noise Reduction System for Removal of Vehicle Motion Artifact - An ECG processing system which removes vehicle motion artifact from a measured ECG signal based on vehicle cabin motion and vehicle suspension motion. | 09-25-2014 |
20140288451 | Multi-Channel Cardiac Measurements - An automatic method of determining local activation time (LAT) in multi-channel cardiac electrogram signals including a ventricular channel, a reference channel and a mapping channel wherein selection of at least one of a reference-channel activation and a mapping-channel activation is based on one or more activation times in the ventricular channel. | 09-25-2014 |
20140296722 | DEVICE AND METHOD FOR DIGITAL-TO-ANALOG TRANSFORMATIONS AND RECONSTRUCTIONS OF MULTI-CHANNEL ELECTROCARDIOGRAMS - The present invention includes a method and apparatus for digital to analog conversion and reconstruction of multichannel electrocardiograms. The method may include receiving digital information representative of a plurality of independent signals, producing a plurality of analog outputs from said digital information wherein a first analog output is designated as a common reference, and imposing a predetermined voltage on a second analog output with respect to said common reference, which provides for a substantial recreation of the original independent signals. The apparatus may comprise a processor operable for receiving digital information representative of independent lead signals from a first ECG machine and digital to analog circuitry for substantially reproducing the original lead signals for analysis on a second ECG machine for convenient and efficient second opinions of cardiac data. | 10-02-2014 |
20140296723 | HEARTBEAT SIGNAL PROCESSING METHOD - A heartbeat signal method includes detecting first and second heartbeat signals, where the first and second heartbeat signals may be potential difference signals with respect to a reference potential. First and second average DC voltage values as voltage values of direct-current components in the first and second heartbeat signals are calculated. First and second average AC amplitude values as amplitude values of alternate-current components in the first and second heartbeat signals are calculated, and a correlation coefficient between the alternate-current component in the first heartbeat signal and the alternate-current component in the second heartbeat signal is calculated. An amplification factor is set to amplify the first or second heartbeat signal on the basis of the first and second average DC voltage values, the first and second average AC amplitude values, and the correlation coefficient. A differential heartbeat signal is generated by amplifying the first or second heartbeat signal by the amplification factor, and a difference between the first and second heartbeat signals is calculated. | 10-02-2014 |
20140296724 | Method and Apparatus for Predicting Patient Outcomes from a Physiological Segmentable Patient Signal - A method and apparatus for predicting patient outcome from a physiological segmentable signal of a patient. In one embodiment, the method comprises the steps of obtaining the physiological segmentable signal of the patient; segmenting the physiological segmentable signal into a plurality of separate segmentable components; calculating a time series of the morphological distance between adjacent separate segmentable components of the plurality of separate segmentable components; and predicting patient outcome in response to the time series of the morphological distance. In another aspect, the invention relates to a method for extracting information from physiological signals for one or more subjects including the steps of partitioning the physiological signal into a plurality of components, grouping the components into a plurality of information classes, assigning a unique symbol to each information class, mapping each component to the assigned symbol, and examining one or more such sequences for clinical significance. | 10-02-2014 |
20140309542 | DETERMINING CARDIOVASCULAR INTENSITY USING HEART RATE DATA - Embodiments provide physiological measurement systems, devices and methods for continuous health and fitness monitoring. A wearable strap may automatically and continually sense and collect data corresponding to the heart rate of a user, which may then be used to determine cardiovascular intensity experienced by the user. Specifically, the heart rate data may be transformed into a time series of heart rate reserve data which is then weighted according to a weighting scheme. The weighted heart rate reserve data may be the basis for programmatically generating an indicator of cardiovascular intensity experienced by the user, which is displayed for a user on the user interface of a display device. | 10-16-2014 |
20140316294 | METHOD AND APPARATUS FOR SUPPRESSING FAR-FIELD SENSING DURING ATRIAL MAPPING - A method and system for mapping an anatomical structure includes sensing activation signals of intrinsic physiological activity with a plurality of electrodes disposed in or near the anatomical structure. Substantially similar activation signals are binned according to a self-correlation algorithm which identifies patterns among the sensed activation signals. A template is generated for each bin and compared to a characteristic template to identify at least one bin which corresponds to a far-field activation signal. | 10-23-2014 |
20140323890 | METHOD AND SYSTEM FOR SIGNAL ANALYZING AND PROCESSING MODULE - Embodiments of the invention disclose a method and a system for signal analyzing and a processing module of the system. The signal analyzing system includes a plurality of first electrodes, a plurality of second electrodes, and a processing module. The first electrodes transmit a plurality of first input signals. The second electrodes transmit a plurality of second input signals. The processing module generates a body electrical signal according to at least one of the plurality of first input signals and at least one of the plurality of second input signals, generates a first filtered signal corresponding to the plurality of first input signals, generates a second filtered signal corresponding to the plurality of second input signals, and generates a lead signal according to the body electrical signal, the first filtered signal and the second filtered signal. | 10-30-2014 |
20140323891 | METHOD AND SYSTEM FOR DETERMINING CARDIAC PERFORMANCE - Methods, associated algorithms, and systems for determining cardiac and/or cardiovascular performance from three measurements on a subject are presented, where two of the measurements are provided by plethysmographs and one measurement is provided by an electrocardiogram. The two plethysmographs are placed different distances from the subject's heart. Certain embodiments use the three measurements to calculate intermediate variables of a left ventricular ejection time and a pre-ejection period. | 10-30-2014 |
20140330145 | MULTI-CHANNEL CARDIAC MEASUREMENTS - An automatic method of determining local activation time (LAT) in multi-channel cardiac electrogram signals including a plurality of cardiac channels, the method comprising: (a) storing the cardiac channel signals; (b) using a ventricular, a reference and a mapping channel to compute first LAT values at a plurality of mapping-channel locations; (c) monitoring the quality of at least one of the ventricular, reference and mapping channels; (d) if the quality of a monitored cardiac channel falls below a standard, replacing the sub-standard channel with another channel of the plurality of channels having an above-standard quality; and (e) computing second LAT values based on the replacement cardiac channel. | 11-06-2014 |
20140336518 | SYSTEM FOR IDENTIFYING ROTOR PROPAGATION VECTORS - A method and system for mapping an anatomical structure includes sensing activation signals of intrinsic physiological activity with a plurality of mapping electrodes disposed in or near the anatomical structure. The activation signals are used to determine a dominant frequency for each electrode from which a wavefront vector for each electrode is determined based on a difference between the dominant frequency at a first electrode location and the dominant frequency at neighboring electrodes. An anatomical map is generated based on the determined wavefront vectors. | 11-13-2014 |
20140343442 | ENHANCED ACTIVATION ONSET TIME OPTIMIZATION BY SIMILARITY BASED PATTERN MATCHING - An anatomical mapping system and method includes mapping electrodes configured to detect activation signals of cardiac activity. A processing system is configured to record the detected activation signals and generate a vector field for each sensed activation signal during each instance of the physiological activity. The processing system determines an onset time and alternative onset time candidates, identifies an initial vector field template based on a degree of similarity between the initial vector field and a vector field template from a bank of templates, then determines an optimized onset time for each activation signal based on a degree similarity between the onset time candidates and initial vector field template. | 11-20-2014 |
20140343443 | BIOMETRIC MONITORING DEVICE HAVING A BODY WEIGHT SENSOR, AND METHODS OF OPERATING SAME - A system comprising a biometric monitoring device including a housing including a platform to receive at least one foot of the user, a body weight sensor to generate body weight data, processing circuitry to calculate user weight data which corresponds to the user's weight, using the body weight data, and communication circuitry to: (a) receive user identification data which identifies the user or a portable activity monitoring device, and (b) transmit the user weight data to data storage associated with the user identification data. The system further includes the portable activity monitoring device including a housing having a physical size and shape that is adapted to couple to the user's body, a sensor to generate sensor data, and communication circuitry to receive physiologic data which is based on the user weight data, and processing circuitry to calculate activity data using the sensor data and physiologic data. | 11-20-2014 |
20140364753 | PATIENT SIGNAL ANALYSIS AND CHARACTERIZATION BASED ON LATE POTENTIALS - Disclosed herein is a framework for facilitating patient signal analysis. In accordance with one aspect, patient signal data including at least one identified cycle is segmented into at least two regions of interest, including a late potential region of interest. The late potential region of interest may be an RS, RT, S-full or T-full signal portion. At least one patient signal parameter is determined based at least in part on the segmented regions of interest. A pathology or event may be detected based on the determined patient signal parameter. | 12-11-2014 |
20140364754 | RMS Electrocardiography System and Method - A system for assessing a cardiac condition of a subject includes a sensor configured to record a plurality N of electrocardiographic signals from the subject to generate an ECG (electrocardiogram). The system further includes a processor configured to compute an RMS (root-mean-square) magnitude function from the recorded signals, and to measure from the RMS magnitude function an RMS variable that contains information about the cardiac condition of the subject. The ECG may be a standard 12-lead clinical ECG. The measured RMS variables may include RMS T-wave width, RMS RT recovery time, and RMS QT interval. | 12-11-2014 |
20140371610 | METHOD AND APPARATUS FOR BEAT-SPACE FREQUENCY DOMAIN PREDICTION OF CARDIOVASCULAR DEATH AFTER ACUTE CORONARY EVENT - A method for the machine generation of a model for predicting patient outcome following the occurrence of an event. In one embodiment the method includes the steps of obtaining a physiological signal of interest, the physiological signal having a characteristic; obtaining a time series of a signal characteristic; dividing the time series into a plurality of window segments; converting the time series from time-space to beat-space; computing the power in various frequency bands of each window segment; computing the 90th percentile of the spectral energies across all window segments for each frequency band; and inputting the data into a machine learning program to generate a weighted risk vector. | 12-18-2014 |
20140371611 | METHOD AND DEVICE TO MEASURE BIOSIGNAL - Provided is a biosignal measurement method and device that may measure a biosignal by connecting a simple electrode or a capacitive coupling active electrode to a biosignal processor to analyze the biosignal. The biosignal processor may change a frequency band in which the biosignal is to be filtered based on a type of the connected electrode. The biosignal measurement device includes a first signal connector capable of removably attaching to an electrode unit that is configured to sense a biosignal, wherein the first signal connector is configured to receive the biosignal from the electrode unit; a power supplier configured to supply power to the electrode unit in response to the power supplier being connected to the electrode unit; and a signal processor configured to process the biosignal received by the first signal connector. | 12-18-2014 |
20140378853 | Universal wearable limb band mounting, powering and providing an antenna for, diverse physiological sensors and monitors - A band, or bracelet, is semi-permanently attachable to, and wearable about, a limb of the human body. The limb band is in the physical form of a familiar, and well-accepted, flexible plastic hospital-type wrist bracelet. As well as providing a physical platform to attach, and to mount, any of a large number of diverse portable electronic physiological, motion and like sensors of the human body and its condition, the limb band houses, and electrically connects, any of (1) a battery that is preferably rechargeable, (2) a solar cell for recharging the battery, (3) an antenna, and/or (4) a universal electronic signal connector (such as a miniature USB connector port). In this manner the limb band economically serves as a universal platform for mounting, supplying power and/or abetting wireless and wired communication to and from, wearable electronic sensors and monitors of humans and animals. | 12-25-2014 |
20140378854 | ATRIAL ACTIVITY SIGNAL ESTIMATION USING INDEPENDENT COMPONENT ANALYSIS - A single-chamber implantable device for detecting a patient's atrial activity using a monobody lead is disclosed. The monobody lead ( | 12-25-2014 |
20150011901 | SYSTEM AND METHOD FOR OPTIMIZING ELECTROCARDIOGRAPHY STUDY PERFORMANCE - A method for optimizing electronic signal monitoring study performance includes assessing study criteria to determine an appropriate noise reduction circuit and selecting an appropriate noise reduction circuit from a plurality of noise reduction circuits in an electronic signal monitoring system. The study is then conducted using the selected noise reduction circuit. | 01-08-2015 |
20150011902 | METHOD AND SYSTEM FOR CARDIAC ISCHEMIA DETECTION - Disclosed herein are methods and systems providing improvements enhancing speed and accuracy in interpreting the electrocardiogram (ECG) for ischemia identification using a graphical presentation. An ischemia criteria and ST segment measurements to be tested are graphically presented simultaneously. The graphical presentation allows the violation of the ischemia criteria to be visualized without any ambiguity. To further ensure that such a condition will not be overlooked, additional graphical highlighting is provided. This graphical approach can be used to improve the detection of conditions that fulfill the specified ischemia criteria and reduce the variation of individual interpretation for patients with border-line ST segment changes. | 01-08-2015 |
20150011903 | NON-LINEAR FILTERING FOR THE RECONSTRUCTION OF A SURFACE ELECTROCARDIOGRAM FROM AN ENDOCARDIAL ELECTROGRAM - An active medical device using non-linear filtering for the reconstruction of a surface electrocardiogram (ECG) from an endocardial electrogram (EGM) is disclosed. The device for the reconstruction of the surface ECG includes a plurality of inputs, receiving a corresponding plurality of EGM signals from endocardial or epicardial electrogram (x | 01-08-2015 |
20150018699 | SYSTEM AND METHODS FOR CLOSED-LOOP COCHLEAR IMPLANT - Embodiments of the present disclosure are directed to systems and methods for a closed-loop cochlear implant. The closed-loop cochlear implant can use at least one extra-cochlear electrode for monitoring auditory evoked potentials from the peripheral and central auditory pathway and stimulating to optimize speech processing. The closed-loop cochlear implant can further use at least one intra-cochlear electrode to stimulate the auditory nerve. Additionally, in some embodiments, the closed-loop cochlear implant can be used to monitor biosignals, such as EMG and ECG. | 01-15-2015 |
20150025402 | Method of Locating the Tip of a Central Venous Catheter - A method of locating a tip of a central venous catheter (“CVC”) having a distal and proximal pair of electrodes disposed within the superior vena cava, right atrium, and/or right ventricle. The method includes obtaining a distal and proximal electrical signal from the distal and proximal pair of electrodes and using those signals to generate a distal and proximal P wave, respectively. A deflection value is determined for each of the P waves. A ratio of the deflection values is then used to determine a location of the tip of the CVC. Optionally, the CVC may include a reference pair of electrodes disposed within the superior vena cava from which a reference deflection value may be obtained. A ratio of one of the other deflection values to the reference deflection value may be used to determine the location of the tip of the CVC. | 01-22-2015 |
20150038862 | SYSTEM FOR PROVIDING AN ELECTRICAL ACTIVITY MAP - The invention relates to a system for providing an electrical cardiac activity map by means of electrical signals acquired by a plurality of surface electrodes on an outer surface of a living being ( | 02-05-2015 |
20150038863 | NON-INVASIVE CLASSIFICATION OF ATRIAL FIBRILLATION BY PROBABILISTIC INTERVAL ANALYSIS OF A TRANSESOPHAGEAL ELECTROCARDIOGRAM - The invention relates to a computer-implemented method for determining an AF complexity value. The method includes applying a template matching algorithm to an ECG signal to obtain a set of candidate deflections and identifying intrinsic deflections within the set of candidate deflections. The method further includes determining a number of intrinsic deflections and a number of far-field deflections within the set of candidate deflections, based on the identified intrinsic deflections, and determining the AF complexity value as a ratio between the number of far-field deflections and the number of intrinsic deflections. | 02-05-2015 |
20150038864 | LIVING BODY DETECTION SENSOR, COMMUNICATION APPARATUS HAVING LIVING BODY DETECTION SENSOR, METAL DETECTION SENSOR - According to one embodiment, a living body detection sensor includes a substrate, a signal generation unit, a first conductor, a second conductor, and a detection unit. The substrate includes a reference potential electrode and a dielectric material. The signal generation unit generates a first signal, the signal generation unit is provided on the substrate. The first conductor receives the first signal, the first conductor is separated from the substrate. The second conductor t receive the first signal sent from the first conductor, the second conductor is separated from the substrate. The detection unit receives the first signal outputted from the second conductor and detects an electric field produced between the first conductor and the second conductor, the detection unit is provided on the substrate. The living body detection sensor detects whether a living body is close to the living body detection sensor. | 02-05-2015 |
20150045681 | ELECTROCARDIOGRAPHY SIGNAL EXTRACTION METHOD - An electrocardiography signal extraction method includes receiving an electrocardiography signal, performing a time-frequency transformation on the received electrocardiography signal to generate a corresponding scalogram, selecting a pre-defined R-pertinent scale, performing the time-frequency transformation at the selected pre-defined R-pertinent scale to generate a R-pertinent summarized response, obtaining a R peak position, selecting a pre-defined QRS-pertinent scale, performing the time-frequency transformation at the selected pre-defined QRS-pertinent scale, obtaining a Q peak position and a S peak position of the electrocardiography signal by finding relative maximum negative responses before and behind the R peak position respectively, obtaining a QRSon position and a QRSoff position by finding relative minimum second derivatives of the responses before the Q peak position and behind the S peak position, respectively. | 02-12-2015 |
20150057555 | SYSTEMS AND METHODS FOR DIAGNOSING HEART FAILURE BASED ON SLEEP APNEIC INDICATORS - This device includes a sensor of endocardiac acceleration EA and one or more circuits configured for: extracting from the EA signal a predetermined EA parameter, determining a period of sleep, evaluating the clinical condition of the patient based on the EA parameter variations on this sleep period, and issuing an alert of worsening of the patient's condition. The device further determines a variability index of the EA parameter on the sleep period, and then calculates a ratio between this calculated variability index and a reference value, and delivers this ratio as a clinical status index. The alert signal is generated by the crossing by this ratio of a predetermined alert threshold. | 02-26-2015 |
20150057556 | SENSOR FOR CONTACTLESS ELECTROCARDIOGRAPHIC MEASUREMENT - A sensor for contactless electrocardiographic measurement on a person includes a carrier for mounting to a seat, an electrode for registering a measurement signal, a pressure sensor supporting the electrode on the carrier, and moisture and temperature sensors mounted to the carrier to detect conditions adjacent to the electrode and the subject person. The moisture sensor and the temperature sensor may be adjacent to at least one opening in the electrode. A processing unit receives information generated by the pressure sensor, the moisture sensor, and the temperature sensor, and filters the measurement signal based on the information. An acceleration sensor may also be mounted to the carrier and/or electrode and send signals to the processor. | 02-26-2015 |
20150057557 | Systems and Methods for Monitoring Vital Signs Based on Sensed Changes in a Target - Methods and systems for monitoring the well-being of a target are disclosed. In a method embodiment, data representing a signal is received by a computer system. The signal may be generated at least in part by one or more sensors in response to the detection of a change in an electrical field, electric potential, capacitance, and/or dielectric constant of a target spaced apart from the one or more sensors. The method may further include identifying, using the computer system and based at least in part on the data electronically received by the computer system, a recurring pattern in the received data. The method may also include determining, using the computer system and based at least in part on the received data, whether a deviation from the recurring pattern transgresses a threshold. The deviation may comprise a subset of the data electronically received by the computer system. | 02-26-2015 |
20150065897 | METHOD AND SYSTEM FOR DETERMINING FLUID STATUS BASED ON A DYNAMIC IMPEDANCE SURROGATE FOR CENTRAL VENOUS PRESSURE - A method and system are provided for determining fluid status with a central venous system of a heart. Dynamic impedance (DI) data and static impedance (SI) data are collected over multiple cardiac cycles (CC) for a persistent time period of interest (POI). The DI and SI data are collected along a central venous (CV) vector that extends through a superior vena cava (SVC). The DI and SI data are analyzed to obtain DI long-term variation (LTV) information and SI LTV information, respectively, and to detect whether the DI LTV information and the SI LTV information include decreasing persistent trends in the DI and SI data. When decreasing persistent trends are detected in the DI and SI data, an overload output is generated to indicate that the heart is experiencing a volume overload state. The DI and SI data represent a surrogate for central venous pressure. | 03-05-2015 |
20150065898 | ADAPTIVE WATCH - A watch or other type of portable electronic console that employs a number of different functions in order to improve its usability. The watch may, for example, allow a user to connect the watch to one or more remote electronic devices, such as an electronic performance sensor or MP3 player. The watch then displays information related to the connected electronic devices. Still further, the watch may allow a user to control the operation of one or more connected remote electronic devices. Thus, if the watch is connected to a remote speed/distance monitor employing a calibration variable, then the watch may allow the user to adjust the calibration variable. | 03-05-2015 |
20150065899 | SYSTEMS AND METHODS FOR ACTIVATING TRANSDUCERS - Transducer-based systems and methods may be configured to display a graphical representation of a transducer-based device, the graphical representation including graphical elements corresponding to transducers of the transducer-based device, and also including between graphical elements respectively associated with a set of the transducers and respectively associated with a region of space between the transducers of the transducer-based device. Selection of graphical elements and/or between graphical elements can cause activation of the set of transducers associated with the selected elements. Transducer activation characteristics, such as initiation time, activation duration, activation sequence, and energy delivery characteristics, can vary based on numerous factors. Visual characteristics of graphical elements and between graphical elements can change based on an activation-status of the corresponding transducers. Activation requests for a set of transducers can be denied if it is determined that a transducer in the set of transducers is unacceptable for activation. | 03-05-2015 |
20150073285 | UNIVERSAL ECG ELECTRODE MODULE FOR SMARTPHONE - Apparatuses and methods for sensing an electrocardiogram (ECG) of a subject using an ECG module that may removably connect to a mobile telecommunications device through a base unit, and which may further then wirelessly communicate with the mobile telecommunications device. | 03-12-2015 |
20150094603 | CONTACTLESS ELECTROCARDIOGRAPHIC MEASUREMENT SENSOR - A sensor for contactless electrocardiographic measurement of a person has at least one electrically conductive, planar electrode having a measurement surface facing the person and a connection surface facing away from the person. An electrical terminal for connection with a measurement apparatus is spaced from the connection surface such that the connection surface is only placed in electrical connection with the terminal when pressure of a required magnitude is applied to the measurement. The electrical connection may be achieved by a switching contact disposed between the electrode and the terminal which is brought into contact with both the electrode and the terminal when the electrode is deflected toward the terminal by the pressure. A compressible material is disposed between the electrode and the terminal to allow tuning of the pressure required to achieve electrical contact. | 04-02-2015 |
20150105679 | METHOD AND APPARATUS FOR GENERATING SYNCHRONIZATION SIGNAL USING ELECTROCARDIOGRAM SIGNAL - An apparatus for generating a synchronization signal based on an electrocardiogram signal of a body by obtaining the electrocardiogram signal, outputting a first peak signal when strength of the electrocardiogram signal becomes larger than that of a reference signal, and generating a first synchronization signal depending on the first peak signal is provided. | 04-16-2015 |
20150119733 | System and Method of Evaluating an Association Between a Wireless Sensor and a Monitored Patient - Systems and methods of evaluating an association between a wireless sensor and a monitored patient include a plurality of peripheral electronic devices each having a wireless communication system and a sensor. A processor receives measured physiological parameter data from the peripheral electronic devices and establishes an association status between each of the peripheral electronic devices and the monitored patient based upon identified characteristics in the physiological parameter data. | 04-30-2015 |
20150119734 | ELECTROCARDIOGRAM MEASURING APPARATUS AND SYNTHESIZED ELECTROCARDIOGRAM GENERATING METHOD - An electrocardiogram measuring apparatus includes: a population coefficient calculating unit which calculates: first population coefficients; and second population coefficients; a personal coefficient calculating unit which calculates: first personal coefficients; and second personal coefficients; and a lead deriving unit which: calculates first personal coefficients of a specific subject based on: a relationship between a magnitude of a ratio of the first population coefficients to the second population coefficients, and a magnitude of a ratio of the first personal coefficients to the second personal coefficients; and second personal coefficients of the specific subject which are calculated based on A leads of the specific subject, the A leads being acquired by electrocardiogram measurement; and synthesizes B leads of the specific subject by using the first personal coefficients of the specific subject. | 04-30-2015 |
20150119735 | Cardiac Mapping System And Method For Bi-Directional Activation Detection Of Electrograms - In a system and computer implemented method for mapping of an anatomic structure and bi-directional activation detection of electrograms such as atrial and/or ventricular electrograms, both positive and negative deflections of an electrogram signal are analyzed over an analysis time period of the signal. At least one characteristic of the electrogram signal is determined based at least in part on analyzing both positive and negative deflections of the signal over the analysis time period. The determined at least one characteristic of the atrial electrogram signal is then associated with a generated three-dimensional model of the anatomic structure. | 04-30-2015 |
20150126882 | SEGMENTED BALLOON CATHETER - A catheter has an inflatable assembly at its distal portion, including a containment chamber, an axial core and a plurality of longitudinally oriented partitions extending from the axial core to the wall of the chamber to divide the containment chamber into at least four inflatable sectors. Hydraulic valves are connected to respective sectors to enable selective inflation of the sectors by a fluid when the valves are connected to a source of the fluid, and at least one surface electrode is mounted on each of the sectors. When introduced into a heart chamber and diametrically opposed sectors are inflated the assembly is stably fixed against the walls of the heart chamber and readings can be obtained from the surface electrodes of the inflated sectors. | 05-07-2015 |
20150133803 | NONINVASIVE ELECTROCARDIOGRAPHIC METHOD FOR ESTIMATING MAMMALIAN CARDIAC CHAMBER SIZE AND MECHANICAL FUNCTION - The present disclosure generally relates to systems and method of a noninvasive electrocardiographic (ECG) technique for characterizing cardiac chamber size and cardiac mechanical function. A mathematical analysis of three-dimensional (3D) high resolution ECG data may be used to estimate chamber size and cardiac mechanical function. For example, high-resolution mammalian ECG signals are analyzed across multiple leads, as 3D orthogonal (X,Y,Z) or 10-channel data for 30 to 1400 seconds to derive estimates of cardiac chamber size and cardiac mechanical function. Multiple mathematical approaches may be used to analyze the dynamical and geometrical properties of the ECG data. | 05-14-2015 |
20150133804 | VEHICLE SEAT - To make it possible to stably measure heartbeats even if seated persons physically differ and to measure the heartbeats of even a seated person other than a driver. A vehicle seat includes: a measuring device including a plurality of sensors that are provided in a seat back and that acquire body potentials of the seated person, and an arithmetic operation device that computes electrical signals to obtain an electrocardiographic signal of the seated person. The sensors are each capacitively coupled sensors. The sensor is arranged at a lower right position relative to the sensor and the sensor while facing a front surface of the seat back if a surface of the seat back facing the seated person is assumed as the front surface. Both sensors are arranged so that the seated person's heart is located in a zone if the zone is defined from the sensor and the sensor. | 05-14-2015 |
20150141856 | DEFIBRILLATOR INCLUDING FUNCTIONS FOR MEASURING AND REMOVING MOTION ARTIFACT - A defibrillator including the function for measuring motion artifact generated when pressing the heart, and method of operating the defibrillator are provided. The defibrillator includes: a first pair of electrodes including a first main electrode and a first sub-electrode arranged adjacent to and insulated from the first main electrode; a second pair of electrodes including a second main electrode and a second sub electrode arranged adjacent to and insulated from the second main electrode; a first measuring unit measuring a first action potential associated with the first pair of electrodes by using the potential difference between the first pair of electrodes; a second measuring unit measuring a second action potential associated with the second pair of electrodes by using the potential difference between the second pair of electrodes; and an estimating unit estimating ECG artifacts associated with the difference between the first action potential and the second action potential. | 05-21-2015 |
20150141857 | INTEGRATE AND FIRE PULSE TRAIN AUTOMATION FOR QRS DETECTION - Various examples are provided for automation of QRS detection. In one example, among others, a system includes an integrate and fire (IF) sampler that can generate an IF pulse train from an analog input signal, and decision logic circuitry that can determine whether a QRS complex waveform is present in a pulse segment of the IF pulse train. In another example, a method includes generating an integrate and fire (IF) pulse train from an analog input signal, identifying a pulse segment of the IF pulse train, and determining whether a QRS waveform is present in the pulse segment based at least in part upon attributes associated with the pulse segment. | 05-21-2015 |
20150305634 | STREAMING UPDATES OF CENTRAL MOMENTS FOR HEART RATE VARIABILITY QUANTIFICATION - A computer readable storage medium configured to cause a system to perform operations of computing the standard deviation of a plurality of K−1 most recent heart beat intervals and a current heart beat interval (I1) from a plurality of consecutive heart beat intervals, from a sum (S1) of K most recent heart beat intervals squared and the sum (S2) of the K most recent heart beat intervals and a Kth oldest heart beat interval (I2). The computer readable storage medium calculates an updated sum (S1′) of S1 minus I2 squared plus I1 squared and the updated sum (S2′) of S2 minus I2 plus I1, and a square root of the sum of the ratio of S1′ to K and of the ratio of the square of S2′ to the square of K. | 10-29-2015 |
20150313482 | Methods and Systems to Calculate time of Mechanical Activation Using Characterization Motion Data Area Strains - A method and system is provided for determining the mechanical activation of a region of interest. The system and method include using a triangulation technique algorithm to generate at least one triangle within a region of interest, wherein the triangle is formed from map points acquired from an intravascular mapping tool. The system and method further include calculating an area strain for each triangle, determining abnormal areas of the region of interest, and excluding triangles that include the abnormal area. Further, the system and method include determining a mechanical activation time for the region of interest based on the remaining triangles. | 11-05-2015 |
20150313489 | Wearable Device and Method for Assessing Cardiac Wellness by Analyzing High Definition EKG Signals - A method for assessing cardiac wellness in a human utilizes high definition EKG signals to detect, analyze and compare waveform feature signatures at rest and during recovery from exertion. The parameters measured and displayed include beat-to-beat heart rate, heart rate variance and rate of recovery, which are indicators of the underlying physiological state. Combining these capabilities in a wearable device enables direct feedback to the user regarding overall fitness and physiologic response to therapeutic or behavioral interventions. | 11-05-2015 |
20150313495 | Cardiac Resynchronization System and Method - Embodiments of the present disclosure provide a method of determining an inter-chamber delay within a heart of an individual that may include determining a position of a first sensor in a first chamber of the heart, determining a position of a second sensor in a second chamber of the heart, automatically computing a distance between the first and second sensors, and automatically determining the inter-chamber delay based on the automatically computing operation. | 11-05-2015 |
20150327814 | METHOD AND APPARATUS FOR MEASURING A BIOLOGICAL SIGNAL - Provided is an apparatus and method for analyzing a biological signal. The apparatus may measure the biological signal, detect a noise signal influencing the electrical characteristics of the measured biological signal, and display the measured biological signal by distinguishing a normal section of the measured biological signal from an abnormal section of the biological signal. | 11-19-2015 |
20150342476 | ELECTRONIC APPARATUS AND PROGRAM - An electronic apparatus includes a determination unit that determines a reference heart rate used as a reference of a heart rate on the basis of a reference running speed used as a reference of exercise ability of a user. | 12-03-2015 |
20150342494 | SPORTS DEVICE AND SYSTEM - A device is designed for collecting heartbeat information. Heart Beat Variation (HRV) is calculated based on the collected heartbeat information. The device has textile sensors so that a user wears a clothing with such sensors to collect the heartbeat information. | 12-03-2015 |
20150342533 | MOTION BASED ESTIMATION OF BIOMETRIC SIGNALS - A wearable electronic device, comprising a heart rate sensor to determine a heart rate of the user, a motion sensor to detect motion of a user, the motion sensor operated in an initial calibration phase during which the heart rate sensor is detecting the heart rate of the user, and the motion sensor is detecting the motion of the user, the calibration phase being used to compute a correspondence between motion of the user and the heart rate of the user, the motion sensor being operated in a low power phase during which the heart rate sensor is powered down, and a processor configured to run a heart rate estimation module configured to calculate an estimated heart rate of the user based upon the motion of the user and the correspondence between the heart rate of the user and the motion of the user determined in the calibration phase. | 12-03-2015 |
20150342534 | METHOD AND APPARATUS FOR REDUCING MOTION ARTIFACTS IN ECG SIGNALS - The present invention provides a method and apparatus for reducing motion artifacts in ECG signals. According to an aspect of the present invention, there is proposed a method of reducing motion artifacts in ECG signals, comprising: acquiring a current beat from a continuously measured ECG signal of a patient; calculating a correlation coefficient between a previous mean value beat and the current beat in the ECG signal; determining the weights to be assigned to the previous mean value beat and the current beat based on the correlation coefficient; and calculating a current mean value beat based on the previous mean value beat, the current beat, and the weights thereof. Accordingly, the novel method of deriving the current mean value beat may reduce ECG artifacts due to patient movement in such a manner that the SNR of the ECG signal can be improved substantially. | 12-03-2015 |
20150359441 | IMPEDANCE MEASUREMENT DEVICES, SYSTEMS, AND METHODS - Aspects of the present disclosure are directed toward obtaining a plurality of impedance-measurement signals while a set of at least three electrodes are concurrently contacting a user. Additionally, various aspects of the present disclosure include determining a plurality of pulse characteristic signals based on the plurality of impedance-measurement signals. One of the pulse characteristic signals is extracted from one of the impedance-measurement signals and is used as a timing reference to extract and process another of the pulse characteristic signals. | 12-17-2015 |
20150366515 | BIOLOGICAL INFORMATION MONITORING SYSTEM, DEVICE, METHOD, AND PROGRAM - A biological information monitoring system includes: a measuring circuitry configured acquire information on a potential difference between two first electrodes that is placed on a first thorax of a user, wherein the first thorax is in a symmetric position to a second thorax that is positioned at the same side as a heart of the user; a detection circuitry configured to detect a plurality of S wave peaks based on the information on the potential difference to generate time-series information on the plurality of S wave peaks; and a processing circuitry configured to determine respiratory information on the user based on the time-series information on the plurality of S wave peaks, and to output the respiratory information as biological information. | 12-24-2015 |
20150374253 | IMPLANTABLE WIRELESS ELECTROCARDIOGRAM SENSOR DEVICE - Disclosed is an implantable wireless electrocardiogram sensor device, including: a cylindrical capsule provided with four recesses on a lateral surface thereof in a longitudinal direction thereof at equal intervals; electrodes installed on upper and lower surfaces of the cylindrical capsule and configured to measure electrocardiogram; a wireless electrocardiogram sensor module installed inside the capsule; a data transceiving antenna wound around two recesses symmetrical at a center; and a coil for charging wound around the remaining two recesses in a direction vertical to the antenna. | 12-31-2015 |
20160000347 | Disposable Printed Conductive Lead Elements for Medical Applications - A conductive lead that connects a medical sensor or probe to a monitoring or analytical machine. The conductive lead is flexible, lightweight and can be manufactured at a very low cost. The conductive lead has a dielectric flexible substrate. Conductive ink is printed upon the flexible substrate. The conductive ink forms contact pads and connection lines on the flexible substrate. The connection lines electrically interconnect the various conductive pads. An insulation layer covers the connection lines The insulation layer can be dialectic ink that is printed atop the conductive ink. Peel-away protective covers are used to cover the contact pads. Any one of the contact pads can be exposed for use by removing the protective cover that covers it. The contact pads are used to electrically interconnect with both the sensor and the machine. | 01-07-2016 |
20160000349 | System and Method for Distinguishing a Cardiac Event From Noise in an Electrocardiogram (ECG) Signal - A cardiac monitoring device includes: at least one sensing electrode for obtaining an electrocardiogram (ECG) signal from a patient; a processing unit comprising at least one processor operatively coupled to the at least one sensing electrode; and at least one non-transitory computer-readable medium comprising program instructions that, when executed by the at least one processor, causes the cardiac monitoring device to: obtain the ECG signal from the at least one sensing electrode; determine a transformed ECG signal based on the ECG signal; extract at least one value representing at least one feature of the transformed ECG signal; provide the at least one value to determine a score associated with the ECG signal, thereby providing an ECG-derived score; compare the ECG-derived score to a predetermined threshold score determined by machine learning; and provide an indication of a cardiac event if the ECG-derived score is one of above or below the predetermined threshold score determined by the machine learning. | 01-07-2016 |
20160001070 | SYSTEMS AND METHODS TO REDUCE SENSOR INTERFERENCE ASSOCIATED WITH ELECTRICAL THERAPIES - Methods and systems for reducing interference in a therapeutic energy delivery system by delivering an electrical therapeutic signal to a patient to provide a therapeutic benefit to the patient, and delivering an electrical counter signal to the patient that destructively interferes with an electrical interference signal resulting from delivering the electrical therapeutic signal. | 01-07-2016 |
20160007839 | ENDOSCOPE SYSTEM | 01-14-2016 |
20160007870 | A METHOD OF PROCESSING A SIGNAL REPRESENTING A PHYSIOLOGICAL RHYTHM | 01-14-2016 |
20160007932 | MEDICAL DEVICES FOR MAPPING CARDIAC TISSUE | 01-14-2016 |
20160015933 | Method and System of Utilizing ECG Signal for Central Venous Catheter Tip Positioning - Disclosed herein are a method and a medical system for utilizing of a intravascular ECG signal for central venous catheter placement. The medical system is capable of detecting the position of a catheter tip and assessing its location relative to the cavoatrial junction. The detection and assessment are performed by a multiscale analysis of the complexity of the intravascular signal data points. | 01-21-2016 |
20160022164 | DETECTING FIDUCIAL POINTS IN PHYSIOLOGICAL SIGNALS - Various aspects are directed to identifying a region of interest in a physiological signal. As may be consistent with one or more embodiments, the physiological signal is decomposed into subcomponents, and a subset of the subcomponents is selected based upon overlap of spectral energy with expected spectral energy of the region of interest, in at least one of the subcomponents. At least two of the subcomponents in the subset are combined and compared to a threshold, with the comparison being used to identify the location of the region of interest. | 01-28-2016 |
20160029915 | ECG ELECTRODE AND LEADWIRE CONNECTION INTEGRITY DETECTION - A system and method for ECG electrode and leadwire connection integrity detection are provided herein. The system includes a plurality of electrodes wherein a uniform spectral energy signal is to be injected into a subset of electrodes of the plurality of electrodes. The system also includes a computing device. The computing device includes a display, and the computing device is communicably coupled to the plurality of electrodes. The computing device is configured to acquire input signals from an electrode and determine a frequency response from the electrode based on the input signal from the electrode. The computing device is also configured to determine impairments in the electrode and leadwire connection using the frequency response. | 02-04-2016 |
20160038098 | METHOD AND APPARATUS FOR PROVIDING BIOMETRIC INFORMATION - A method and apparatus for providing information are provided. The method includes measuring biometric information corresponding to a health condition of a body part of a user, determining a visual metaphor representation for characterizing a degree of the health condition based on mapping information between components of the visual metaphor representation and types of the measured biometric information, transforming, by a processor, the measured biometric information into the determined visual metaphor representation, and providing the transformed visual metaphor representation. | 02-11-2016 |
20160043704 | FREQUENCY-ADAPTIVE NOTCH FILTER - One apparatus includes a notch filter that has a state observer unit and a parameter adaptation unit. The state observer unit is configured to receive a sampled noisy electrical signal and a sampled filtered electrical signal, the state observer unit having an estimated noise signal output, the estimated noise signal output carrying an estimated noise signal to be subtracted from the sampled noisy electrical signal, resulting in the filtered electrical signal. The parameter adaptation unit is configured to receive the estimated noise signal and an error signal from the state observer unit. The parameter adaptation unit is also configured to determine, based on the estimated noise signal and the error signal, an updated estimated noise frequency, thereby causing the state observer unit to generate an updated estimated noise signal to be provided on the estimated noise signal output. | 02-11-2016 |
20160045129 | USE OF DETECTION PROFILES IN AN IMPLANTABLE MEDICAL DEVICE - Implantable medical device systems and methods configured to use a detection profile selected from among a plurality of detection profiles to define a detection threshold for identifying cardiac events, in which a close call definition is used to determine which of the plurality of detection profiles is to be chosen. Upon identifying a close call, in which an overdetection nearly occurred but did not actually take place, a relatively less sensitive detection profile is chosen. | 02-18-2016 |
20160045133 | Utilization of electrode spatial arrangements for characterizing cardiac conduction conditions - A system and method are provided for determining electrophysiological data. The system comprises an electronic control unit that is configured to receive electrical signals from a set of electrodes, receive position and orientation data for the set of electrodes from a mapping system, compensate for position and orientation artifacts of the set of electrodes, compose cliques of a subset of neighboring electrodes in the set of electrodes, determine catheter orientation independent information of a target tissue, and output the orientation independent information to a display. The method comprising receiving electrogram data for a set of electrodes ( | 02-18-2016 |
20160045166 | Electrocardiogram Analysis - A device is described for analyzing electrocardiogram data. The device comprises processing means for comparing at least one parameter derived from a temporal sequence of electrocardiogram data a previously recorded distribution of that parameter obtained from the user under a plurality of different physiological conditions. Based on the comparison, a signal representative of a risk of a myocardial infarction occurring in the body of the user is provided. A corresponding method, device and computer application for installing on a user device are also described. | 02-18-2016 |
20160045167 | Electrocardiogram Analysis | 02-18-2016 |
20160051202 | FILTERING PATIENT SIGNAL ALSO FOR VENTILATION ARTIFACTS - In embodiments, an external medical device is intended to care for a patient. If it receives an input that signifies that ventilation artifact is present in a signal of the patient, it transmits a corrective signal responsive to the received input. In further embodiments, a patient signal is received, which is generated from a patient while the patient is or was receiving chest compressions at a frequency Fc, and also receiving ventilations at frequency Fv. At least one filter mechanism may be applied to the patient signal to substantially remove artifacts at a) frequency Fc, b) a higher harmonic of frequency Fc, and c) a third frequency substantially equaling frequency Fc plus or minus frequency Fv, while substantially passing other frequencies between them. As a result, the patient signal can be cleaner, for diagnosing the patient's state more accurately. | 02-25-2016 |
20160058386 | APPARATUS AND METHOD FOR ECG MOTION ARTIFACT REMOVAL - The invention proposes an apparatus for reducing motion artifact in an ECG signal of a patient. The apparatus comprises a calculating unit configured to calculate a mean value beat from the ECG signal; a first obtaining unit configured to obtain a residual signal based on the ECG signal and the mean value beat calculated from the ECG signal; a filtering unit configured to perform filtering of the residual signal with one or more cut off frequencies; a second obtaining unit configured to obtain a modified ECG signal based on the filtered residual signal and the mean value beat; and a determining unit configured to determine the one or more cut off frequencies of the filtering based on an acceleration signal representative of motion status of the patient. By using the proposed apparatus, motion artifacts can be greatly removed from the ECG signal and the quality of the ECG signal can be therefore improved. | 03-03-2016 |
20160066807 | POSTURE DEPENDENT TIME SERIES FILTERING SYSTEM AND METHODS FOR THE DETECTION OF CARDIAC EVENTS - A device for detecting a cardiac event is disclosed. Detection of an event is based on a test applied to a parameter whose value varies according to heart rate. Both the parameter value and heart rate (RR interval) values are filtered with an exponential average filter. The filtered parameter value and heart rate values are stored as separate datasets corresponding to particular body postures. Upper and lower boundary values and detection thresholds of the parameter are computed for each of the datasets. The test to detect the cardiac event depends on the heart rate and the difference between the parameter's value and a corresponding detection threshold. | 03-10-2016 |
20160073915 | Wireless EKG System - A wireless electrocardiogram (EKG) system having a plurality of wireless electrodes configured to wirelessly transmit EKG data to a display that is configured to display EKG data through a graphical EKG plot. Each wireless electrode includes a barcode thereon configured to allow a user to associate a set of wireless electrodes with a particular display. The display includes a barcode scanner, which is adapted to read and decode the barcode on each electrode to associate the electrode with the display. Each wireless electrode includes a housing configured to support an EKG sensor, a microprocessor adapted to process EKG signals from the EKG sensor for wireless transmission, and a wireless transmitter configured to transmit and encode EKG signals. The display includes a receiver configured to receive EKG data from the wireless transmitter and a microprocessor configured to generate the graphical EKG plot on the display. | 03-17-2016 |
20160073918 | SYSTEMS AND METHODS FOR ACTIVATING TRANSDUCERS - Transducer-based systems and methods may be configured to display a graphical representation of a transducer-based device, the graphical representation including graphical elements corresponding to transducers of the transducer-based device, and also including between graphical elements respectively associated with a set of the transducers and respectively associated with a region of space between the transducers of the transducer-based device. Selection of graphical elements and/or between graphical elements can cause activation of the set of transducers associated with the selected elements. Transducer activation characteristics, such as initiation time, activation duration, activation sequence, and energy delivery characteristics, can vary based on numerous factors. Visual characteristics of graphical elements and between graphical elements can change based on an activation-status of the corresponding transducers. Activation requests for a set of transducers can be denied if it is determined that a transducer in the set of transducers is unacceptable for activation. | 03-17-2016 |
20160074260 | INFANT PATIENT TRANSFER DEVICE WITH HEART RATE SENSOR - A patient transfer device is utilized to transport infant patients between locations within a hospital environment. The patient transfer device includes a center, support section and a pair of side sections that can be moved into contact with each other to surround the infant patient. The first and second side sections each include a handle that can be brought into close proximity to each other and can be grasped by a single hand of a clinician. The patient transfer device includes a heart rate sensor positioned to provide a heart rate measurement of the patient when the patient is received on the patient transfer device. The patient heart rate can be displayed on either an integrated display or wirelessly transmitted to an external display device. In this manner, the heart rate of the infant can be continuously monitored during transport. | 03-17-2016 |
20160074666 | METHOD AND APPARATUS FOR DETERMINING PARAMETERS FOR OVERSENSING IN AN IMPLANTABLE MEDICAL DEVICE - A method and medical device for determining oversensing that includes sensing cardiac signals from a first sensing channel, determining whether oversensing of the cardiac signal is occurring in response the cardiac signals sensed from the first sensing channel, determining a sensing parameter adjustment and initiating sensing of cardiac signals from a second sensing channel having the adjusted sensing parameter in response to oversensing being determined to occur, determining an oversensing value in response to the sensing in the second sensing channel, and storing the determined oversensing value. | 03-17-2016 |
20160081574 | DETECTING LOSS OF FULL SKIN CONTACT IN PATIENT ELECTRODES - Patient electrodes, patient monitors, defibrillators, wearable defibrillators, software and methods may warn when an electrode stops being fully attached to the patient's skin. A patient electrode includes a pad for attaching to the skin of a patient, a lead coupled to the pad, and a contact detector that can change state, when the pad does not contact fully the skin of the patient. When the detector changes state, an output device may emit an alert, for notifying a rescuer or even the patient. | 03-24-2016 |
20160089050 | ENHANCED ACTIVATION ONSET TIME OPTIMIZATION BY SIMILARITY BASED PATTERN MATCHING - An anatomical mapping system and method includes mapping electrodes configured to detect activation signals of cardiac activity. A processing system is configured to record the detected activation signals and generate a vector field for each sensed activation signal during each instance of the physiological activity. The processing system determines an onset time and alternative onset time candidates, identifies an initial vector field template based on a degree of similarity between the initial vector field and a vector field template from a bank of templates, then determines an optimized onset time for each activation signal based on a degree similarity between the onset time candidates and initial vector field template. | 03-31-2016 |
20160106330 | CARDIAC MONITORING DEVICE AND METHOD - A method of predicting cardiac disease includes the steps of: attaching a monitoring device to a patient; obtaining cardiac information from the patient using the monitoring device; transmitting the obtained cardiac information from the monitoring device to a data-computing device; analyzing the transmitted cardiac information using the data-computing device and a predictive model; building an indication report from the analyzed cardiac information; and outputting the indication report. | 04-21-2016 |
20160113520 | MULTI-FUNCTION HEALTH MONITOR - A system and method for a multi-function remote ambulatory cardiac monitoring system. The system includes a housing and a microprocessor disposed within the housing. The microprocessor controls the remote ambulatory cardiac monitoring system. The system also includes an electrode for sensing ECG signals and the electrode being in communication with the microprocessor. An integrated cellular module also is included in the system, and the cellular module is connected to the microprocessor and disposed within the housing. The integrated cellular module transmits ECG signals to a remote center. | 04-28-2016 |
20160113540 | METHODS AND APPARATUS FOR MEASURING INDIVIDUAL ELECTRODE IMPEDANCES - Electrode impedances on a body of a subject are measured by connecting a sense electrode, a reference electrode and a return electrode to the body, using the sense electrode to deliver a test current from a current source to the body of the subject, and measuring the potential difference between the sense electrode and the reference electrode. The impedance of the sense electrode on the body is measured in accordance with the measurement of the potential difference between the sense electrode and the reference electrode. | 04-28-2016 |
20160113543 | SYSTEMS AND METHODS FOR ON-SITE AND REAL-TIME ELECTROCARDIOGRAPHIC IMAGING (ECGI) - A non-transitory computer readable medium stores instructions that, when executed by at least one processor, cause the at least one processor to perform a method that includes computing a transfer matrix representing a relative influence that each respective electrode location for measuring electrical potentials on a patient's body has on an estimation of electrical potentials for locations on a surface of interest prior to the measuring of electrical potentials at the respective electrode locations and receiving electrical potential measurements measured via a plurality of electrodes at respective electrode locations on the patient's body. The method also includes computing the estimation of electrical potentials for the locations on the surface of interest based at least in part on the received electrical potential measurements and the computed transfer matrix and generating image data representing the estimation of electrical potentials. | 04-28-2016 |
20160128625 | METHOD AND APPARATUS FOR ADVISING PHYSICAL CONDITION AND RECORDING MEDIUM USING THE METHOD - A method and an apparatus for advising physical condition and a recording medium using the method are provided. In the method, multiple sensing devices are configured for a user to measure data related to the physical condition of the user. The data measured by the sensing devices is collected and integrated to estimate a current physical condition of the user. An advice is concluded at least based on the current physical condition of the user, and prompted for the user. | 05-12-2016 |
20160128641 | ACTIGRAPHY METHODS AND APPARATUSES - An actigraphy method includes receiving a physiological parameter signal as a function of time for a physiological parameter other than body motion (such as electrocardiography or a respiration monitor), computing a body motion artifact (BMA) signal as a function of time from the physiological parameter signal (for example, using a local signal power signal, a local variance signal, a short-time Fourier transform, or a wavelet transform over epochs of duration on order a few minutes or less), and computing an actigraphy signal as a function of time from the BMA signal, for example by applying a linear transform to the BMA signal and optionally applying filtering such as median removal and/or high-pass filtering. | 05-12-2016 |
20160135705 | REAL-TIME MULTI-FUNCTIONAL ECG SIGNAL PROCESSING SYSTEM, DSPE FOR THE ECG SIGNAL PROCESSING SYSTEM, AND METHOD THEREOF - An electrocardiogram (ECG) signal processing system is provided. The ECG signal processing system comprises an analog-to-digital converter (ADC) configured to convert an input analog ECG signal into a digital ECG signal, and a digital signal processing engine (DSPE) coupled to the ADC to receive the digital ECG signal. The DSPE is configured to decompose and reconstruct the digital ECG signal. A dynamic system clock source is coupled to the ADC and the DSPE for dynamic signal sampling, the dynamic system clock source clocking the ADC and the DSPE at a first frequency f | 05-19-2016 |
20160137483 | HYDRATION MONITORING SYSTEM - An activity and volume sensing beverage container cap system for a beverage container including a cap that couples with the beverage container, a processor, a timer and at least one activity level sensor, such as an inclinometer, coupled with the processor. The activity level sensor detects container orientation. When the container is tilted, the timer measures an amount of time in an orientation. Based on the current and previous orientation and the amount of time the container is in different orientations, the processor determines an amount of time of activity of the user, and a level of activity of the user, such as number of steps or moves per time. The inclinometer is also sued to determine the amount of volume dispensed from the container when tilted over a threshold indicative of drinking. Thus one inclinometer may be utilized as both to determine activity level and volume of fluid dispensed. | 05-19-2016 |
20160143530 | Smart Patient Monitoring - A patient monitoring method wherein data is received from a transducer by an electronic device, the electronic device receives input from the patient regarding timing of various events, the data is processed to incorporate the event timing data, and the data is then transmitted to a terminal. The terminal is accessible by, e.g., a healthcare provider. The transducer is used to perform medical diagnostic tests, such as fetal non-stress tests, electrocardiography, Holter monitoring, and electroencephalography. In the event that an emergency is identified, the healthcare provider can take immediate action. The utilization of an electronic device, e.g., a smartphone, by patients not only ensures ease of use and compliance with testing, but also conveniently allows patients to take an active role in their healthcare. | 05-26-2016 |
20160143533 | MEDICAL DEVICE SYSTEM HAVING AN IMPLANTED MEDICAL DEVICE AND AN EXTERNAL DEVICE - Disclosed is a system having an implanted component and external component which are configured to provide a test of wireless communication in order to assess the success or failure of such communication and to store attributes related to such test in a memory log. To provide the communication test the implantable and external components can attempt wireless communication according to communication test parameters which relate to number of times to retry communication, duration of sending communication test signals, durations of waiting for communication test signals and the schedule of the communication tests. The schedule of tests may be period or may change over time in order to become more or less frequency according to a programmable schedule that may also decrease if the communication tests are successful and indicate patient compliance in keeping the external components close by. The communication tests can assist in determining if the patient is maintaining external components within a suggested proximity (e.g. 6 feet) of the patient and may assist to determine if transmission or reception difficulties are the source of communication failure. A physician programmer can provide for programming, conducting, summarizing and assessing the results of communication tests. | 05-26-2016 |
20160150988 | Systems and Methods for Tracking Non-Stationary Spectral Structure and Dynamics in Physiological Data | 06-02-2016 |
20160151020 | MATTRESS FOR MEASURING PHYSIOLOGICAL PARAMETERS OF HEART | 06-02-2016 |
20160157744 | METHOD AND SYSTEM FOR GENERATING TWELVE-LEAD ELECTROCARDIOGRAM SIGNALS USING THREE DIFFERENTIAL VOLTAGES - In a method and system for generating twelve-lead ECG signals based on three differential voltages, each of which is defined as a potential difference between two myoelectric signals sensed respectively by two corresponding electrodes that cooperatively constitute a corresponding differential electrode pair and that are disposed on a user's chest at predetermined specific locations, a signal processor generates the twelve-lead ECG signals using a pre-established dynamic system model that is associated with the specific locations of the electrodes on the user's chest and that is configured with temporal and spatial correlations among twelve leads of an ECG. | 06-09-2016 |
20160183809 | MEDICAL DEVICES FOR MAPPING CARDIAC TISSUE - Medical devices and methods for making and using medical devices are disclosed. An example system for mapping the electrical activity of the heart includes a catheter shaft. The catheter shaft includes a plurality of electrodes including a first electrode and a second electrode. The system also includes a processor. The processor is capable of collecting a first signal corresponding to the first electrode and a second signal corresponding to the second electrode. Collecting the first and second signals occurs over a time period. The processor is also capable of generating a first time-frequency distribution corresponding to the first signal, identifying a first dominant frequency value occurring at a first dominant frequency and a first time point, generating a second time-frequency distribution corresponding to the second signal, identifying a second dominant frequency value occurring at a second dominant frequency and a second time point and determining an attraction point. | 06-30-2016 |
20160183810 | MEDICAL SYSTEM FOR MAPPING CARDIAC TISSUE - Medical devices and methods for making and using medical devices are disclosed. An example system for mapping the electrical activity of the heart includes a catheter shaft. The catheter shaft includes a plurality of electrodes including a first and a second electrode. The system also includes a processor. The processor is capable of collecting a first signal corresponding to a first electrode over a time period and generating a first time-frequency distribution corresponding to the first signal. The first time-frequency distribution includes a first dominant frequency value representation occurring at one or more first base frequencies. The processor is also capable of applying a filter to the first signal or derivatives thereof to determine whether the first dominant frequency value representation includes a single first dominant frequency value at a first base frequency or two or more first dominant frequency values at two or more base frequencies. | 06-30-2016 |
20160183811 | SYSTEM AND METHOD OF DETECTING ABNORMAL MOVEMENT OF A PHYSICAL OBJECT - A method of identifying a predetermined type of abnormal movement of a physical object includes generating a raw matrix comprising a first array and a second array, the generation of the raw matrix. The method also includes generating an integrated matrix by performing a dimension reduction on the raw matrix. The method a further includes identifying the predetermined type of abnormal movement of the physical object by comparing the integrated matrix or a set of indexes derived from the integrated matrix with a predetermined benchmark pattern corresponding to the predetermined type of abnormal movement. Generating the raw matrix includes a first analysis on a predetermined portion of a periodic signal representative of movement of the physical object to generate the first array. Generating the raw matrix also includes performing a second analysis different from the first analysis on the predetermined portion of the periodic signal to generate the second array. | 06-30-2016 |
20160183832 | Heart Electrophysiological Signal Analysis System - A system automatically detects and measures ST deviation of a heart wave ECG signal in the presence of noise and accommodates baseline variation of the signal and other artifacts. A system identifies a particular point in an electrophysiological signal representing heart electrical activity using an interface for receiving an electrical signal waveform comprising an R-wave and including an ST segment portion associated with heart electrical activity of a patient over a heart beat cycle. A signal processor processes data representing the electrical signal waveform by identifying an S point and T point in the electrical signal waveform and determining a first candidate J point in the electrical signal waveform having substantially a maximum distance from a line between the identified S and T points, the distance being measured perpendicularly to the line. | 06-30-2016 |
20160183876 | ELECTROCARDIOGRAM NOISE REDUCTION - A catheterization system that includes an electrophysiologic (EP) catheter which has a lumen receiving an electrically conductive fluid delivered by a hydraulic line that is acted upon by a peristaltic pump advantageously avoids noise in intracardiac ECG signal recordings by using an electrical connection to short triboelectrical charge carried by the conductive fluid in the hydraulic line to an existing analog ground in the system. In one embodiment, the electrical connection includes an electrically conductive wire housed in the control handle and configured to provide electrical connection between the fluid and a pin on a printed circuit board housed in the control handle that is electrically connected to the analog ground. In another embodiment, the electrical connection shorts the electrically conductive fluid proximal of the control handle of the catheter. | 06-30-2016 |
20160184004 | FILTER CIRCUIT FOR ELECTROPHYSIOLOGY SYSTEM - An ablation generator may include an input port for receiving a monitoring signal respective of tissue of the patient and an output port for providing the monitoring signal another device. A filtering circuit may be disposed between the input port and the output port, the filtering circuit configured to present a high impedance at one or more frequencies at or near which a mapping and navigation system associated with the ablation generator transmits a signal. The filtering circuit may additionally or alternatively be provided in a monitoring system or another component in an electrophysiology system. | 06-30-2016 |
20160192854 | FOCUSED RECORDING AND STIMULATION ELECTRODE ARRAY | 07-07-2016 |
20160249859 | ENDOESOPHAGEAL BALLOON CATHETER, SYSTEM, AND RELATED METHOD | 09-01-2016 |
20160374580 | Method and System for Predicting of Acute Hypotensive Episodes - A method and system of predicting a hypotensive episode in a patient using one or more time varying hypotension specific biomarkers corresponding to physiological processes in the patient. Data derived from sensors or other measurement devices such as ECG sensors can be used to generate biomarkers. The biomarkers can then be used to generate an acute hypotension prediction classifier, or monitored factor, derived from a three dimensional temporal representation of two or more biomarkers. When the monitored factor exceeds a predetermined threshold the method and system trigger an alarm before an appearance of a hypotensive episode in the patient. | 12-29-2016 |
20160378936 | METHODS AND SYSTEMS USING MATHEMATICAL ANALYSIS AND MACHINE LEARNING TO DIAGNOSE DISEASE - Exemplified method and system facilitates monitoring and/or evaluation of disease or physiological state using mathematical analysis and machine learning analysis of a biopotential signal collected from a single electrode. The exemplified method and system creates, from data of a singularly measured biopotential signal, via a mathematical operation (i.e., via numeric fractional derivative calculation of the signal in the frequency domain), one or more mathematically-derived biopotential signals (e.g., virtual biopotential signals) that is used in combination with the measured biopotential signals to generate a multi-dimensional phase-space representation of the body (e.g., the heart). By mathematically modulating (e.g., by expanding or contracting) portions of a given biopotential signal, in the frequency domain, the numeric-based operation gives emphasis or de-emphasis to certain measured frequencies of the biopotential signals, which, when coupled with machine learning, facilitates improved diagnostics of certain pathologies. | 12-29-2016 |
20160380598 | PSEUDO-RANDOM CHOPPER AMPLIFIER - A chopper stabilized amplifier that utilizes a multi-frequency chopping signal to reduce chopping artifacts. By utilizing a multi-frequency chopping signal, the amplifier DC offset and flicker noise are translated to the higher chopping frequencies but are also smeared, or spread out in frequency and consequently lowered in amplitude. This lower amplitude signal allows for less stringent filtering requirements. | 12-29-2016 |
20170231516 | METHOD AND SYSTEM OF MONITORING CARDIAC FUNCTION BASED ON PATIENT POSITION | 08-17-2017 |
20170231700 | Systems And Methods For Breaching A Sterile Field For Intravascular Placement Of A Catheter | 08-17-2017 |
20170232263 | SYSTEM AND METHOD OF IDENTIFYING SOURCES ASSOCIATED WITH BIOLOGICAL RHYTHM DISORDERS | 08-17-2017 |
20220133207 | HEART GRAPHIC DISPLAY SYSTEM - Systems are provided for generating data representing electromagnetic states of a heart for medical, scientific, research, and/or engineering purposes. The systems generate the data based on source configurations such as dimensions of, and scar or fibrosis or pro-arrhythmic substrate location within, a heart and a computational model of the electromagnetic output of the heart. The systems may dynamically generate the source configurations to provide representative source configurations that may be found in a population. For each source configuration of the electromagnetic source, the systems run a simulation of the functioning of the heart to generate modeled electromagnetic output (e.g., an electromagnetic mesh for each simulation step with a voltage at each point of the electromagnetic mesh) for that source configuration. The systems may generate a cardiogram for each source configuration from the modeled electromagnetic output of that source configuration for use in predicting the source location of an arrhythmia. | 05-05-2022 |
20220133227 | METHOD FOR STRESS DETECTION UTILIZING ANALYSIS OF CARDIAC RHYTHMS AND MORPHOLOGIES - A method for detecting stress in organisms with a cardiac organ is provided. A cardiac waveform is input to an analysis system which decomposes the incoming signal to detect patterns within the decomposed segments. The patterns are comprised of one or more of the following: the overall waveform of a series of beats, a single beat or segments contained within a beat. The decomposed parts of the cardiac waveform are classified according to types of stress patterns both known in the art and dynamically learned through feedback. When the system detects that a sufficient threshold of stress has been exceeded, a notification can be generated and the details of the stress, such as the severity and type can be communicated to an external module, system, user or host. Patterns indicating a future or rapidly increasing stress level, signaled by evolving patterns in the cardiac waveform can be detected and an alert generated before a major or difficult to control stressful event is externalized by the organism. | 05-05-2022 |