| Entries |
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| 20080228086 | Systems and methods for evaluating vessels - Disclosed are systems and methods for evaluating body vessels. Images of the vessel are captured, analyzing to generate a three-dimensional model of the vessel, and the data associated with the three-dimensional model is analyzed. In cases in which the vessel is a coronary artery, the vessel model can be analyzed to determine the vulnerability of plaques within the artery to rupture. In some embodiments, the images are optical coherence tomography images. In some embodiments, the images are captured with an optical catheter that includes a tracking device. In some embodiments, the analysis includes flow and/or structural analysis. | 09-18-2008 |
| 20080234586 | SYSTEM AND METHOD FOR PROVIDING NONINVASIVE DIAGNOSIS OF COMPARTMENT SYNDROME USING EXEMPLARY LASER SPECKLE IMAGING PROCEDURE - Exemplary systems and methods can be provided for providing information associated with tissue. For example, it is possible to illuminate the tissue with at least one electromagnetic radiation which is a coherent light and/or a partially coherent light. The electromagnetic radiation reflected from the tissue can be received and speckle patterns may be formed associated with the electromagnetic radiation. In addition, changes can be analyzed in the speckle patterns at time intervals sufficient to measure motion of or within a fascial compartment of the tissue. For example, it is also possible that the electromagnetic radiation is an interfered radiation from a sample and a reference. Further, the speckle patterns can be measured at different depths within the sample by moving the reference. | 09-25-2008 |
| 20080300493 | Optical microprobe for blood clot detection - The invention is devices and related methods for detecting blood clots in a blood vessel. An optical microprobe is configured to illuminate a blood vessel with electromagnetic radiation corresponding to the near-infrared portion of the electromagnetic spectrum. The optical microprobe has a pair of fiber optic strands configured for transmission spectroscopy to obtain the absorption spectrum generated by the components within the blood vessel. Because blood clots generate a detectable and unique spectrum, the presence or absence of the blood clot is determined by examining the blood vessel absorption spectrum. A specially-designed holder is configured to stably position the optical microprobe relative to the blood vessel and is used to facilitate precise blood clot detection along a length of blood vessel. | 12-04-2008 |
| 20080306392 | BLOOD VESSEL IMAGING APPARATUS - An imaging device used for a blood vessel imaging apparatus includes: a housing; an image sensor mounted in the housing; a control circuit board fixedly held in the housing and provided with the image sensor; an illumination circuit board disposed in the housing so as to be opposed to the control circuit board, and having an opening in a position opposed to the image sensor; a tubular light intercepting member disposed so as to cover the periphery of the image sensor and protrude through the opening; and an optical part attached to the tubular light intercepting member. | 12-11-2008 |
| 20100081940 | Laser Self-Mixing Sensors for Biological Sensing - According to embodiments, systems, devices, and methods for biological sensing with laser self-mixing sensors are disclosed. In one embodiment, one or more self-mixed laser Doppler signals may be used to detect blood flow velocity or blood vessel wall velocity. In one embodiment, a blood vessel wall compliance may be derived from the blood vessel wall velocity. In one embodiment, blood pressure may be calculated based at least in part on blood flow velocity or based at least in part on blood flow velocity and blood vessel compliance. In one embodiment, common mode noise may be removed from one or more laser signals. | 04-01-2010 |
| 20100160792 | Spectroscope With Modified Field-of-View - A spectroscope for detecting vulnerable plaques includes an optical fiber extending through a catheter. The optical fiber has a field-of-view that is modified to preferentially collect light scattered from deep within the wall of a blood vessel. Obstructions or curved optical surfaces can be used to modify the field of view. | 06-24-2010 |
| 20110004107 | ATHERECTOMY CATHETER WITH LATERALLY-DISPLACEABLE TIP - Described herein are atherectomy catheters, systems and methods that include a distal tip region that may be moved laterally so that its long axis is parallel with the long axis of the main catheter body axis. Displacing the distal tip region laterally out of the main catheter body axis exposes an annular blade and opens a passageway for cut tissue to enter a storage region within the catheter. The annular blade may be internally coupled to a drive shaft that rotates the blade, and thus the exposed blade edge may have the same crossing profile (OD) as the rest of the distal end region of the catheter. Also described herein are gear-driven atherectomy devices that may use a cable drive shaft to actuate the annular blade. Both push-to-cut and pull-to-cut variations are described, as are methods for cutting tissue and systems including these atherectomy catheters. | 01-06-2011 |
| 20110021927 | BLOOD PRESSURE MEASUREMENT APPARATUS, RECORDING MEDIUM ON WHICH BLOOD PRESSURE DERIVATION PROGRAM IS RECORDED, AND METHOD FOR DERIVING BLOOD PRESSURE - A blood pressure measurement apparatus includes a derivation control unit that performs derivation control to derive a blood pressure of a measured person. The derivation control unit includes an envelope extracting unit to extract an envelope of a volume pulse wave based on an arterial volume signal, a differential processing unit to differentiate the envelope with respect to a cuff pressure, a maximum value extracting unit to extract a maximum value of a differential value of the envelope, and a blood pressure decision unit that decides the cuff pressure used for the differential of the maximum value as a blood pressure. | 01-27-2011 |
| 20110060228 | METHOD AND APPARATUS FOR EVALUATING FLUIDITY OF BLOOD - In order to supply a method and a device that can evaluate the fluidity of blood with good sensitivity in a simple manner, there is provided a blood fluidity evaluation method in which a pressure member is pressed against a test site upon a test subject, blood at the test site is squeezed to flow out to the periphery of the test site, change over time of the amount of blood at the test site is measured at this time using optical scattering, and blood fluidity at the test site is evaluated from this measurement data; and, desirably, before the above method, a positioning process is performed in which: the pressure member is pressed against the test site with a weak force; pulse measurement data is acquired due to the absorption of light; and a relative position, at which the intensity of the pulse measurement data attains a local maximum, is determined as being an optimum measurement position. | 03-10-2011 |
| 20110071404 | Lumen Morphology and Vascular Resistance Measurements Data Collection Systems, Apparatus and Methods - A method and apparatus of automatically locating in an image of a blood vessel the lumen boundary at a position in the vessel and from that measuring the diameter of the vessel. From the diameter of the vessel and estimated blood flow rate, a number of clinically significant physiological parameters are then determined and various user displays of interest generated. One use of these images and parameters is to aid the clinician in the placement of a stent. The system, in one embodiment, uses these measurements to allow the clinician to simulate the placement of a stent and to determine the effect of the placement. In addition, from these patient parameters various patient treatments are then performed. | 03-24-2011 |
| 20110071405 | Apparatus, Systems, and Methods of in-vivo Blood Clearing in a Lumen - In one aspect, the invention relates to a computer-implemented method of triggering optical coherence tomography data collection. The method includes collecting optical coherence tomography data with respect to a vessel using an optical coherence tomography probe disposed in the vessel; determining a clearing radius and a quality value for each frame of optical coherence tomography data collected for the vessel using a computer; determining if a blood clearing state has occurred using at least one clearing radius and at least one quality value; and generating a trigger signal in response to the blood clearing state. | 03-24-2011 |
| 20110137181 | Heart pulse detector - A heart pulse detector includes a light emitting diode for emitting a short pulse light toward body tissue and a photo sensor for receiving light signal modulated by blood pulse flow through body tissue. The output current of photo sensor is charging a capacitor during pulse light and is discharging the same capacitor during no pulse light for same period of pulse light. The ambient light signal is then cancelled out from the detected light signal. The light current signal is transferred to a voltage signal after sample and hold procession. Finally heart pulse signal is detected out from the voltage signal without the interference of ambient light. | 06-09-2011 |
| 20110166457 | BIOLOGICAL INFORMATION DETECTOR AND BIOLOGICAL INFORMATION MEASUREMENT DEVICE - A biological information detector includes a first sensor unit for detecting composite information including biological information of a test subject and first noise information originating in external light, having a first light-emitting part for emitting toward there, a first light-receiving part for receiving it including the biological information, reflected there, and the light including the first noise information obtained from the external light, transmitted through there, and a first reflecting and leading part for reflecting the light including the biological and the first noise information, leading it to the first light-receiving part, and a second sensor unit for detecting second noise information originating in the external light, having a second light-receiving part for receiving the light including the second noise information, obtained from the external light and transmitted through there, and a second reflecting, leading part for reflecting the external light and leading it to the second light-receiving part. | 07-07-2011 |
| 20110178414 | GIOLOGICAL INFORMATION DETECTOR AND BIOLOGICAL INFORMATION MEASURING DEVICE - A biological information detector includes a light-emitting part, a light-receiving part, a reflecting part, and a substrate. The light-receiving part is for receiving light having biological information, where the light is emitted by the light-emitting part and reflected at a detection site of a test subject. The reflecting part is for reflecting the light emitted by the light-emitting part or the light having biological information. The substrate has a first surface and a second surface facing the first surface, formed from a material that is transparent with respect to a wavelength of the light emitted by the light-emitting part, at least one of the first surface and the second surface of the substrate has a light-blocking region containing wiring leading to at least the other of the light-emitting part and the light-receiving part. | 07-21-2011 |
| 20110190641 | BIOLOGICAL INFORMATION MEASUREMENT APPARATUS - Disclosed herein is a biological information measurement apparatus for rendering laser light incident on an examinee and measuring a state of internal tissue of the examinee based on light scattered within the examinee. The biological information measurement apparatus includes a laser light source for emitting the laser light, photoelectric conversion means for receiving the scattered light and generating a measurement signal based on the scattered light, signal amplification means for generating an amplified signal by amplifying a signal level of the measurement signal, signal supply means for intermittently supplying the measurement signal to the signal amplification means, first output means for intermittently holding the amplified signal corresponding to a period in which the measurement signal is supplied to the signal amplification means and outputting the held signal as a first signal, second output means for intermittently holding the amplified signal corresponding to a period in which the measurement signal is not supplied to the signal amplification means and outputting the held signal as a second signal, signal subtraction means for generating a subtraction signal based on a difference between the first signal and the second signal, and arithmetic output means for arithmetically outputting information about the internal tissue of the examinee based on the subtraction signal. | 08-04-2011 |
| 20110196242 | BIOLOGICAL INFORMATION DETECTOR AND BIOLOGICAL INFORMATION MEASURING DEVICE - To provide a biological information detector or the like in which the detection accuracy or the measurement accuracy can be increased. A biological information detector includes a light-emitting part ( | 08-11-2011 |
| 20110257534 | PHOTOELECTRIC SPHYGMOGRAPH MEASUREMENT DEVICE - A photoelectric sphygmograph measurement device includes a light emitting part emitting light pulses, a light receiving part having a light receiving element that receives the light pulses and producing a corresponding output signal, and a control part driving the light emitting part to emit the light pulses and performing a pulse wave measurement by using the output signal. The control part drives the light emitting part so that a charge accumulated in the light emitting element converges on a predetermined amount in a case where the charge accumulated in the light receiving element decreases to the predetermined amount or less during a time when driving of the light emitting part is stopped and/or in a case where the light receiving element changes to a first state in which the light receiving element is capable of receiving the light pulses from a second state in which the light receiving element is not capable of receiving the light pulses. | 10-20-2011 |
| 20110270094 | NONINVASIVE HYPOVOLEMIA MONITOR - A hypovolemia monitor comprises a plethysmograph input responsive to light intensity after absorption by fleshy tissue. A measurement of respiration-induced variation in the input is made. The measurement is normalized and converted into a hypovolemia parameter. An audible or visual indication of hypovolemia is provided, based upon the hypovolemia parameter. | 11-03-2011 |
| 20110288418 | IN VIVO MEASUREMENT OF MITOCHONDRIAL FUNCTION - Disclosed herein are devices for assessing mitochondrial function in a living subject comprising a catheter comprising a sheath defining a lumen, a distal end, and a proximal end comprising a light guide for radiating light onto a target within the subject and for receiving a fluorescence signal from the target; a light source, wherein the catheter is adapted for transmitting light from the light source to the light guide; and, a detector for receiving the fluorescence signal from the light guide and for correlating the fluorescence signal to the mitochondrial function of the target. Also disclosed are methods for assessing mitochondrial function in a living subject comprising placing a catheter proximate to a site of interest within the subject; using the catheter to acquire fluorescence signals from cells at the site of interest; and, correlating the fluorescence signals to the mitochondrial function of the cells. | 11-24-2011 |
| 20120022381 | Methods and Systems for Tissue Analysis - The invention relates to methods and systems to optically analyze samples such as tissue based on speckle patterns of microscopic motion, such as Brownian motion. | 01-26-2012 |
| 20120035485 | PULSE DETECTION USING PATIENT PHYSIOLOGICAL SIGNALS - The presence of a cardiac pulse in a patient is determined by evaluating physiological signals in the patient. In one embodiment, a medical device evaluates optical characteristics of light transmitted into a patient to ascertain physiological signals, such as pulsatile changes in general blood volume proximate a light detector module. Using these features, the medical device determines whether a cardiac pulse is present in the patient. The medical device may also be configured to report whether the patient is in a VF, VT, asystole, or PEA condition, in addition to being in a pulseless condition, and prompt different therapies, such as chest compressions, rescue breathing, defibrillation, and PEA-specific electrotherapy, depending on the analysis of the physiological signals. Auto-capture of a cardiac pulse using pacing stimuli is further provided. | 02-09-2012 |
| 20120041316 | PULSE AND CONFIDENCE INDICATOR DISPLAYED PROXIMATE PLETHYSMOGRAPH - According to some embodiments of the present invention, a display is used to show an indication of the signal's quality. This indication of the signal's quality may be provided in a number of ways, including audibly or visually. | 02-16-2012 |
| 20120065523 | DVT DETECTION - A device comprising a light transmission and detection system having transducers ( | 03-15-2012 |
| 20120078119 | METHOD AND APPARATUS FOR ROBUST HEART RATE SENSING - A heart rate sensing system ( | 03-29-2012 |
| 20120078120 | METHOD AND APPARATUS FOR ROBUST HEART RATE SENSING - A heart rate sensing system ( | 03-29-2012 |
| 20120150047 | PULSE WAVE SENSOR - Among the technical characteristics disclosed in this specification, the pulse wave sensor with one of the technical characteristic includes a construction to detect the pulse wave at a wrist (i.e., a construction to measure the pulse wave to be worn at the wrist). To be more concrete, the pulse wave sensor includes a measurement unit to measure the pulse wave, a power source unit to supply power to the measurement unit, a cable to connect between the measurement unit and the power source unit electrically, and a armlet type housing to contain the measurement unit, the power source unit, and the cable. | 06-14-2012 |
| 20120197137 | METHOD AND SYSTEM FOR CARRYING OUT PHOTOPLETHYSMOGRAPHY - A method of photoplethysmography includes processing a signal ( | 08-02-2012 |
| 20120209126 | METHOD AND SYSTEM FOR DETECTING CARDIAC ARRHYTHMIA - A method of analyzing physiological data indicative of myocardial activity is disclosed. The method comprises: identifying in the data a set of N features, each corresponding to a ventricular depolarization, and calculating M time-intervals for each ventricular depolarization feature, thereby providing a vector of N*M time-intervals. The method further comprises fitting the vector to a power density function of time-intervals, and determining possible cardiac arrhythmia based on statistical parameters characterizing the function. | 08-16-2012 |
| 20120215114 | Non-Invasive Optical Imaging for Measuring Pulse and Arterial Elasticity in the Brain - An optical imaging system and a method for generating a report regarding elasticity of arteries in the brain of a subject under test. Light output from the light source of the imaging system non-invasively illuminates at least one blood vessel or region of interest in the brain and, upon the interaction with the vessel, is registered with an optical detector to obtain a shape parameter of a hemodynamic pulse in the vessel. The shape parameter is further correlated to an elasticity parameter of the blood vessel(s) feeding the brain region of interest and presented in a form of report that may be a two- or a three-dimensional image of the parameter across the tested region of the brain. | 08-23-2012 |
| 20120245472 | Monitoring Device With An Accelerometer, Method And System - A monitoring device for monitoring the vital signs of a user is disclosed herein. The monitoring device is preferably comprises an article, an optical sensor, an accelerometer and processor. The optical sensor preferably comprises a photodetector and a plurality of light emitting diodes. A sensor signal from the optical sensor is processed with a filtered accelerometer output signal from the accelerometer to create a filtered vital sign signal used to generate a real-time vital sign for a user. | 09-27-2012 |
| 20120245473 | MULTIMODAL SPECTROSCOPIC SYSTEMS AND METHODS FOR CLASSIFYING BIOLOGICAL TISSUE - Multimodal optical spectroscopy systems and methods produce a spectroscopic event to obtain spectroscopic response data from biological tissue, either ex vivo or in vivo, and compare the response data with a model configured to correlate the measured response data and the most probable attributes of the tissue, thus facilitating classification of the tissue based on those attributes. | 09-27-2012 |
| 20120253205 | APPARATUS AND METHOD FOR MEASURING BLOOD FLOW - An apparatus for measuring blood flow includes a detection part and a signal processing part. The detection part includes a blood flow detector for measuring a blood flow of a measured portion of an object, which makes contact with the measured portion, and a force detector for detecting a contact force between the blood flow detector and the measured portion. The signal processing part produces a corrected blood flow in reflection of an error of the blood flow due to the contact force. | 10-04-2012 |
| 20120259232 | ENDOSCOPE APPARATUS - An endoscope apparatus has: a light source device that includes a light source irradiating narrow band light and a fluorescent substance to emit predetermined fluorescent light and that irradiates illumination light; an endoscope body that includes an imaging element outputting an image signal; and a processing device that includes a signal dividing unit dividing the image signal into a first image signal corresponding to the narrow hand light and a second image signal corresponding to the fluorescent light, a blood vessel depth information calculating unit calculating blood vessel depth information based on the first image signal and the second image signal, a spectral estimation information calculating unit calculating spectral estimation information based on the second image signal, and an image processing unit generating a captured image from the first image signal, the second image signal, the blood vessel depth information, and the spectral estimation information. | 10-11-2012 |
| 20120265078 | MICRO VEIN ENHANCER - The present invention is a Miniature Vein Enhancer that includes a Miniature Projection Head. The Miniature Projection Head may be operated in one of three modes, AFM, DBM, and RTM. The Miniature Projection Head of the present invention projects an image of the veins of a patient, which aids the practitioner in pinpointing a vein for an intravenous drip, blood test, and the like. The Miniature projection head may have a cavity for a power source or it may have a power source located in a body portion of the Miniature Vein Enhancer. The Miniature Vein Enhancer may be attached to one of several improved needle protectors, or the Miniature Vein Enhancer may be attached to a body similar to a flashlight for hand held use. The Miniature Vein Enhancer of the present invention may also be attached to a magnifying glass, a flat panel display, and the like. | 10-18-2012 |
| 20120277596 | IMAGING VIA BLOOD VESSELS - A method and system are described for generating a signal indicative of an intravascular image received at least partly via a light transducer and invoking circuitry for passing the generated signal out of a subject's body. | 11-01-2012 |
| 20120283577 | NONINVASIVE PHYSIOLOGICAL ANALYSIS USING EXCITATION-SENSOR MODULES AND RELATED DEVICES AND METHODS - Methods and apparatus for qualifying and quantifying excitation-dependent physiological information extracted from wearable sensors in the midst of interference from unwanted sources are provided. An organism is interrogated with at least one excitation energy, energy response signals from two or more distinct physiological regions are sensed, and these signals are processed to generate an extracted signal. The extracted signal is compared with a physiological model to qualify and/or quantify a physiological property. Additionally, important physiological information can be qualified and quantified by comparing the excitation wavelength-dependent response, measured via wearable sensors, with a physiological model. | 11-08-2012 |
| 20120296219 | APPARATUS AND METHOD FOR RESPIRATORY RATE DETECTION AND EARLY DETECTION OF BLOOD LOSS VOLUME - An apparatus and method is provided that provide, in real-time, an accurate detection and warning of dangerous blood or fluid loss to warn of impending hypovolemia, by non-invasive monitoring and processing of photoplethysmography data. | 11-22-2012 |
| 20120296220 | DIAGNOSIS SUPPORTING APPARATUS AND CONTROL METHOD OF DIAGNOSIS SUPPORTING APPARATUS - A diagnosis supporting apparatus includes: an image input section that inputs an endoscopic image acquired from a living tissue, a structure detection section that detects similar circular-shaped structures from an image signal corresponding to the endoscopic image inputted to the image input section, and a network detection section that detects a predetermined network shape in the endoscopic image, based on a number of similar circular-shaped structures detected by the structure detection section, areas of the similar circular-shaped structures, distances between the respective similar circular-shaped structures, or a number of connections between the respective similar circular-shaped structures. | 11-22-2012 |
| 20120302894 | SIGNAL PROCESSING APPARATUS AND METHOD - A method and an apparatus to analyze two measured signals that are modeled as containing desired and undesired portions such as noise, FM and AM modulation. Coefficients relate the two signals according to a model defined. The method and apparatus are particularly advantageous to blood oximetry and pulserate measurements. | 11-29-2012 |
| 20120302895 | METHODS AND SYSTEMS FOR FILTERING A SIGNAL ACCORDING TO A SIGNAL MODEL AND CONTINUOUS WAVELET TRANSFORM TECHNIQUES - According to embodiments, systems and methods are provided for filtering a signal. A first reference signal may be generated according to a signal model and a second reference signal may be generated by analyzing a continuous wavelet transform of a signal. The first and second reference signals may then both be applied to an input signal to filter the input signal according to the components of both of the reference signals. | 11-29-2012 |
| 20120302896 | PULSE DETECTION APPARATUS, SOFTWARE, AND METHODS USING PATIENT PHYSIOLOGICAL SIGNALS - The presence of a cardiac pulse in a patient is determined by evaluating physiological signals in the patient. In one embodiment, a medical device evaluates two or more different physiological signals, such as phonocardiogram (PCG) signals, electrocardiogram (ECG) signals, patient impedance signals, piezoelectric signals, and accelerometer signals for features indicative of the presence of a cardiac pulse. Using these features, the medical device determines whether a cardiac pulse is present in the patient. The medical device may also be configured to report whether the patient is in a VF, VT, asystole, or PEA condition, in addition to being in a pulseless condition, and prompt different therapies, such as chest compressions, rescue breathing, defibrillation, and PEA-specific electrotherapy, depending on the analysis of the physiological signals. Auto-capture of a cardiac pulse using pacing stimuli is further provided. | 11-29-2012 |
| 20120323127 | System, Devices, and Methods For Detecting Occlusions In A Biological Subject - Systems, devices, and methods are described for detecting an embolus, thrombus, or a deep vein thrombus in a biological subject. | 12-20-2012 |
| 20130006121 | Device for Identifying Hemodynamic Changes - A device for identifying changes in or elevated levels of compartment pressure has a blood-volume sensor adapted to be arranged at a distal blood-flow region relative to a region of interest, and a data processor in communication with the blood-volume sensor. The data processor is configured to receive a data signal from the blood-volume sensor, obtain a reference signal, compare the data signal to the reference signal to identify a difference between the reference signal and the data signal that is indicative of an change in pressure within the region of interest, and identify at least one of changes in or elevated levels of compartment pressure in the region of interest based on the comparing. | 01-03-2013 |
| 20130012823 | Methods and Systems for Non-Invasive Measurement of Blood Pressure - Methods and systems for determining a blood pressure value for a patient in a non-invasive manner are disclosed. A photoplethysmograph (PPG) signal is obtained from a patient's measurement location. Clinical parameters of the patient are also received. Based on measurement parameters extracted from the PPG signal and the clinical parameters, a fixed length vector is generated. The fixed length vector is analyzed using a deep belief network, and an estimated blood pressure reading is output. | 01-10-2013 |
| 20130023775 | Magnetic Reusable Sensor - A magnetic reusable sensor is configured to attach to a tissue site so as to illuminate the tissue site with optical radiation and detect the optical radiation after attenuation by pulsatile blood flow within the tissue site. The sensor is configured to communicate with a monitor so as to calculate a physiological parameter corresponding to constituents of the pulsatile blood flow determined by the detected optical radiation. The sensor has a reusable emitter and a detector. A disposable wrap removably secures the emitter and the detector to a tissue site via magnetically enhanced receptacles fixedly mounted on the wrap and magnetically enhanced carriers housing the emitter and the detector. | 01-24-2013 |
| 20130030307 | QUANTIFYING LASER-DOPPLER PERFUSION SIGNAL FOR ARRHYTHMIA DETECTION AND DISEASE MONITORING - A medical device system and associated method to control a laser Doppler unit to emit light from a coherent laser light source and collect a photodetector signal produced by the laser Doppler unit by a signal processor comprising a bandpass filter. The bandpass filter is applied to the photodetector signal to determine a tissue perfusion measurement from the filtered signal. A monitoring unit is enabled to receive the tissue perfusion measurement to detect a physiological condition of the patient in response to the tissue perfusion measurement. | 01-31-2013 |
| 20130030308 | Medical Device for Diagnosis Pressure Ulcers - Medical device or instrument for diagnosing pressure ulcers using optical reflectance spectroscopy. The device may comprise a tip and a controller. The tip is pressed against the skin of the patient and collects the optical reflectance data. The controller processes the data to determine whether there exists a pressure ulcer and, if there is one, its depth. The tip may also include a pressure sensor for sensing the pressure at which the tip is applied to the patient's skin. | 01-31-2013 |
| 20130041268 | SENSOR DEVICE AND METHOD FOR MEASURING AND DETERMINING A PULSE ARRIVAL TIME (PAT) VALUE - A method for measuring and determining a pulse arrival time (PAT) value of a user using a sensor device comprising a photoplethysmographic (PPG) multichannel sensor formed from a plurality of PPG sensor channels and being adapted to measure a set of PPG signals, each PPG signal being measured by one of the PPG sensor channels when the multichannel PPG sensor is in contact with the user; comprising: measuring said set of PPG signals; extracting a plurality of features from each of the measured PPG signals; selecting a subset from the set of PPG signals based on the extracted features; and processing the selected subset of PPG signals to determine the PAT value. The disclosed sensor and method can be embedded into a chest belt and do not need skilled supervision. They can represent a potential candidate for the implantation of PWV measurement campaigns in the ambulatory setting. | 02-14-2013 |
| 20130046187 | METHOD OF ANALYZING AND PROCESSING SIGNALS - A physiological measurement system is disclosed which can take a pulse oximetry signal such as a photoplethysmogram from a patient and then analyse the signal to measure physiological parameters including respiration, pulse, oxygen saturation and movement. The system comprises a pulse oximeter which includes a light emitting device and a photodetector attachable to a subject to obtain a pulse oximetry signal; analogue to digital converter means arranged to convert said pulse oximetry signal into a digital pulse oximetry signal; signal processing means suitable to receive said digital pulse oximetry signal and arranged to decompose that signal by wavelet transform means; feature extraction means arranged to derive physiological information from the decomposed signal; an analyser component arranged to collect information from the feature extraction means; and data output means arranged in communication with the analyser component. | 02-21-2013 |
| 20130046188 | METHOD OF ANALYZING AND PROCESSING SIGNALS - A physiological measurement system is disclosed which can take a pulse oximetry signal such as a photoplethysmogram from a patient and then analyze the signal to measure physiological parameters including respiration, pulse, oxygen saturation and movement. The system comprises a pulse oximeter which includes a light emitting device and a photodetector attachable to a subject to obtain a pulse oximetry signal; analogue to digital converter means arranged to convert said pulse oximetry signal into a digital pulse oximetry signal; signal processing means suitable to receive said digital pulse oximetry signal and arranged to decompose that signal by wavelet transform means; feature extraction means arranged to derive physiological information from the decomposed signal; an analyzer component arranged to collect information from the feature extraction means; and data output means arranged in communication with the analyzer component. | 02-21-2013 |
| 20130053704 | MEDICAL DEVICE FOR USE IN ASSESSING THE STATE OF A PERSON'S ENDOTHELIUM - Disclosed is a device for use in assessing the state of a person's endothelium, comprising first and second probes for attachment to the person's body, said first probe ( | 02-28-2013 |
| 20130060147 | OCCLUSIVE NON-INFLATABLE BLOOD PRESSURE DEVICE - A blood pressure device including a compressible material can be placed around a limb of a patient (e.g. a band or cuff). Further, the blood pressure device can include a sleeve that, at least partially, covers the compressible material and is capable of compressing the compressible material to occlude a patient's blood vessel without inflating the sleeve. In some embodiments, the sleeve can compress the compressible material using a motor assembly. This motor assembly can include a motor and any additional mechanical devices that can be used to facilitate compressing the compressible material. For example, the motor assembly may include one or more of the following: a cable, a pulley, and a gear assembly, such as a worm drive or any other gear assembly that can facilitate compressing the compressible material. | 03-07-2013 |
| 20130060148 | PULSE DETECTION USING PATIENT PHYSIOLOGICAL SIGNALS - The presence of a cardiac pulse in a patient is determined by evaluating physiological signals in the patient. In one embodiment, a medical device evaluates optical characteristics of light transmitted into a patient to ascertain physiological signals, such as pulsatile changes in general blood volume proximate a light detector module. Using these features, the medical device determines whether a cardiac pulse is present in the patient. The medical device may also be configured to report whether the patient is in a VF, VT, asystole, or PEA condition, in addition to being in a pulseless condition, and prompt different therapies, such as chest compressions, rescue breathing, defibrillation, and PEA-specific electrotherapy, depending on the analysis of the physiological signals. Auto-capture of a cardiac pulse using pacing stimuli is further provided. | 03-07-2013 |
| 20130072805 | Lumen Morphology and Vascular Resistance Measurements Data Collection Systems, Apparatus and Methods - A method and apparatus of automatically locating in an image of a blood vessel the lumen boundary at a position in the vessel and from that measuring the diameter of the vessel. From the diameter of the vessel and estimated blood flow rate, a number of clinically significant physiological parameters are then determined and various user displays of interest generated. One use of these images and parameters is to aid the clinician in the placement of a stent. The system, in one embodiment, uses these measurements to allow the clinician to simulate the placement of a stent and to determine the effect of the placement. In addition, from these patient parameters various patient treatments are then performed. | 03-21-2013 |
| 20130079645 | Systems and Methods for Visualizing Ablated Tissue - Systems and methods for visualizing ablated tissue are disclosed. In some embodiments, a system for imaging tissue comprising: a catheter having a distal end and a proximal end; an inflatable balloon disposed about the distal end of the catheter; and an optical housing extending from the distal end of the catheter into the balloon, the optical housing being configured to position inside the balloon a light source for illuminating a tissue outside the balloon and a camera for imaging the illuminated tissue. | 03-28-2013 |
| 20130090564 | LIGHT DETECTING APPARATUS AND FLUID MEASURING APPARATUS - A light detecting apparatus includes: a first photoelectric conversion element unit ( | 04-11-2013 |
| 20130096439 | METHOD AND SYSTEM FOR CONTACT-FREE HEART RATE MEASUREMENT - A method and a system for heart rate measurement are provided. The method includes: capturing at least one image, detecting skin-like points by using a skin color detector, labeling the skin-like points and tracking at least one target to be measured, taking statistics on color values of the target at multiple time points, measuring the heart rate through frequency transformation. The method and the system are easy to setup fully an automatic contact-free measurement of multiple persons' heart rates at a time, and applicable in multiple regions of human body for heart rate measurement such as head and neck, arm, and palm regions. | 04-18-2013 |
| 20130116575 | IMPLANTABLE DOPPLER BLOOD FLOW MONITOR AND DOPPLER PROBE - A Doppler blood flow monitoring system comprises a sensor cuff capable of being secured around an exterior surface of a patient's vessel, at least one transducer attached to the sensor cuff for generating signals into the vessel and for receiving said signals, and a transmitter in communication with the at least one transducer and capable of wirelessly transmitting an RF signal external to the patient's body. The system also comprises a receiver capable of receiving the RF signal from the transmitter and being capable of generating an audible sound or signal commensurate with detected flow. The system can take advantage of pulse wave or continuous wave Doppler technology. | 05-09-2013 |
| 20130116576 | DETECTION AND MONITORING OF ABDOMINAL AORTIC ANEURYSM - Ruptured Abdominal Aortic Aneurysms (AAA) cause a large number of deaths annually. Ruptures occur even in people who are already diagnosed with AAA and are being monitored. The reason is that the interval between tests is too long because of the need to visit a pathological facility with imaging equipment. It is preferable to estimate the progress of AAA frequently, once detected, in a non-invasive manner, preferably at the subject's home, without the need for the subject to visit a pathological facility. A device is disclosed for detecting a state of a vascular pathology of a subject, comprising a sensor signal unit ( | 05-09-2013 |
| 20130137994 | SENSOR UNIT AND BIOSENSOR - A highly miniaturized biosensor and a sensor unit, which can meet a demand for further miniaturization. With this invention, miniaturization is possible, and the number of production steps including those for assembling individual parts can be reduced. Accordingly, mass production will be possible, and cost reduction and high reliability will be achieved. A light emitting unit ( | 05-30-2013 |
| 20130137995 | PULSE DIAGNOSIS DEVICE USING OPTICAL SENSOR - A pulse diagnosis device which can detect the pulsation signal of a radial artery using an optical sensor comprising: a sensor module for sensing the pulsation signal by closely adhering thereto a prescribed body part; and a system control portion for operating the sensor module, and processing the optical signal sensed from the sensor module, wherein the sensor module comprises: an optical waveguide-type sensor which is placed on the bottom surface of the sensor module, and lets the optical signal to pass therethrough and detects the change in optical characteristics due to the change in the pressure; a light-source module which is connected on one side surface of the optical waveguide-type sensor, and inputs the optical signal into the optical waveguide-type sensor; and an optical detector module which is connected on one side surface of the optical waveguide-type sensor, and detects the optical signal delivered from the optical waveguide-type sensor. | 05-30-2013 |
| 20130150733 | DEVICE AND METHOD FOR DETECTING AN EMBOLUS MOVING IN A BLOOD VESSEL - The invention provides a device for detecting a moving embolism in a blood vessel. One or more sources of electromagnetic radiation deliver electromagnetic radiation to the blood vessel. First and second optical detectors, positioned at a downstream and an upstream location, respectively, along the flow axis of the blood vessel, detect electromagnetic radiation emitted by the sources at the downstream and upstream locations, after having been reflected from, or transmitted through, the blood vessel. A processor monitors one or more parameters of the electromagnetic radiation detected by the downstream and upstream detectors. An embolus in the blood vessel is detected when a transient change in a monitored parameter is first detected by the downstream detector, and, after a time lag, is then detected by the upstream detector. | 06-13-2013 |
| 20130178749 | TISSUE PROFILE WELLNESS MONITOR - A tissue profile wellness monitor measures a physiological parameter, generates a tissue profile, defines limits and indicates when the tissue profile exceeds the defined limits. The physiological parameter is responsive to multiple wavelengths of optical radiation after attenuation by constituents of pulsatile blood flowing within a tissue site. The tissue profile is responsive to the physiological parameter. The limits are defined for at least a portion of the tissue profile. | 07-11-2013 |
| 20130190629 | ELECTRONIC SPHYGMOMANOMETER FOR MEASURING BLOOD PRESSURE AND PULSE - An electronic sphygmomanometer includes a cuff including an air bladder, a pressure sensor, an artery volume sensor, and a computation device. The computation device includes an inner pressure control section, a volume sensor signal receive section for receiving a pulse wave signal detected by the artery volume sensor, a pressure sensor signal receive section for receiving a pressure pulse wave signal superimposed on the inner pressure of the air bladder and detected by the pressure sensor, a judgment section for choosing either the pulse wave signal or the pressure pulse wave signal as a signal for calculating pulse rate of the patient during a period when the inner pressure of the air bladder is increased and/or decreased by the inner pressure control section, and a pulse rate calculation section for calculating pulse rate of the patient based on the pulse wave signal and the signal chosen by the judgment section. | 07-25-2013 |
| 20130197373 | IMPLANTABLE MEDICAL DEVICE HAVING OPTICAL FIBER FOR SENSING ELECTRICAL ACTIVITY - An implantable medical device for optically sensing action potential signals in excitable body tissue. The device includes an elongated tubular lead body carrying an optical fiber extending from a proximal lead end to a distal lead end to position the optical fiber at a target site. The lead body additionally carries a conduit for dispensing a voltage-sensitive fluorescent dye into tissue surrounding the target site. The optical fiber transmits excitation light to the fluorescent dye to cause the dye to fluoresce with varying intensity as the transmembrane potentials of local tissue cells vary due to passing depolarization wavefronts. The optical fiber transmits the fluorescence signal to the device to generate an action potential signal or fiducial points of an action potential signal for use in accurately measuring and characterizing electrical activity of excitable tissue. | 08-01-2013 |
| 20130204143 | PULSE WAVE MEASUREMENT APPARATUS AND PROGRAM - A pulse wave measurement apparatus includes a light emitting device that applies light to a measurement position at which a pulse wave is measured, and a plurality of light receiving devices that output measurement signals based on the amount of received light which is applied from the light emitting device and is reflected from the measurement position. The control unit of the pulse wave measurement apparatus performs the independent component analysis on the measurement signals output from the plurality of light receiving devices, and calculates the weighting factors of each component when each of the measurement signals is divided into a plurality of components. The control unit calculates the dispersion of the calculated weighting factors for each component, and specifies a component in which the calculated dispersion is the smallest. The control unit generates pulse wave information indicative of the pulse wave based on the specified component. | 08-08-2013 |
| 20130211264 | REFLECTION-DETECTOR SENSOR POSITION INDICATOR - A reflection-detector sensor position indicator comprises emitters that transmit light having a plurality of wavelengths. A detector outputs a sensor signal. At least one reflection detector outputs at least one sensor position signal. An attachment assembly attaches the emitters, the detector and the reflection detector onto a tissue site. A sensor-on condition indicates that the attachment assembly has positioned the emitters generally centered over a fingernail, the detector on a fingertip opposite the fingernail and the reflection detector over the fingernail. The sensor signal, in the sensor-on condition, is at least substantially responsive to the emitter transmitted light after attenuation by pulsatile blood flow perfused within a fingernail bed underneath the fingernail. The sensor position signal, in the sensor-on condition, is at least substantially responsive to the emitter transmitted light after reflection off of the fingernail. | 08-15-2013 |
| 20130218028 | DERIVING ARTERIAL PULSE TRANSIT TIME FROM A SOURCE VIDEO IMAGE - What is disclosed is a system and method for determining an arterial pulse transit time of a subject of interest in a remote sensing environment. A video imaging system is used to capture a time varying source images of a proximal and distal region of a subject intended to be analyzed for arterial pulse transit time. A time series signal for each of the proximal and distal regions is extracted from the source images and a phase of each of the extracted time series signals is computed. A difference is then computed between these phases. This phase difference is a monotonic function of frequencies in the signals. From the monotonic function, an arterial pulse transit time of the subject is extracted. The subject's arterial pulse transit time is then communicated to a computer system. The computer system determines blood pressure, blood vessel blockage, blood flow velocity, or a peripheral neuropathy. | 08-22-2013 |
| 20130226009 | HYPOVOLEMIA DIAGNOSIS TECHNIQUE - Embodiments of the present disclosure relate to a system and method for determining a risk, onset, or presence of hypovolemia based on one or more features of a plethysmographic waveform during a patient breathing cycle. For example, a hypovolemic patient may exhibit characteristic changes in pulse amplitude or stroke volume during inhalation and exhalation relative to a healthy patient. Further, a trend or pattern of such features may be used to assess the patient's fluid condition. | 08-29-2013 |
| 20130231574 | FITNESS MONITORING - A heart monitoring system for a user includes a body wearable appliance placed on or near the user skin and having one or more sensors to capture fitness data and a wireless transceiver to communicate fitness data; and a processor coupled to the wireless transceiver to receive fitness data. | 09-05-2013 |
| 20130237860 | SYSTEMS AND METHODS FOR SIDESSTREAM DARK FIELD IMAGING - The present application discloses systems and methods for the comprehensive monitoring of the microcirculation in order to assess the ultimate efficacy of the cardiovascular system in delivering adequate amounts of oxygen to the organ cells. In some cases, system embodiments may utilize reflectance avoidance by reflectance filtering, such as OPS imaging or Mainstream Dark Field imaging, or by Sidestream Dark Field imaging, which utilizes external direct light on the tip of the light guide to achieve reflectance avoidance whereby incident and reflected light do not travel down the same pathway. | 09-12-2013 |
| 20130245462 | APPARATUS, METHODS, AND ARTICLES OF MANUFACTURE FOR DETERMINING AND USING HEART RATE VARIABILITY - In embodiments, a person's heart rate variability (HRV) is determined by analyzing different color channels of a video of the person's skin. Various statistics are then derived from the HRV. The person's HRV statistics are processed using comparison's with HRV statistics of other people with known athletic through sedentary lifestyles, to obtain the person's fitness index. An analogous processing is carried out using comparisons of the person's HRV statistics to those of people with known levels of proficiency in specific sports, to obtain the person's sport-specific fitness index for the person. | 09-19-2013 |
| 20130267858 | SYSTEM AND METHOD FOR CHARACTERIZING CIRCULATORY BLOOD FLOW - A computer-implemented method for characterizing circulatory blood volume and autoregulatory compensatory mechanisms to maintain circulatory blood volume is disclosed. A biological signal that emulates the arterial pulse wave is collected from a sensor. Three derived parameters are extrapolated from the biological signal. The first parameter, circulatory stress, reflects of the changes of the heart rate frequency. The second, circulatory blood volume, reflects the changes in the frequency strength of the heart rate frequency. The third, Pulse Volume Alteration (PVA) Index is a ratio of the sum of the strengths of the heart rate frequency harmonics to the strength of the heart rate frequency of the unprocessed biological signal. Each parameter is compared to a threshold value and assessed to determine an adequacy of circulatory blood volume and an appropriateness of the autoregulatory mechanisms used to maintain circulatory blood volume adequacy. | 10-10-2013 |
| 20130296713 | PLETHYSMOGRAPH VARIABILITY PROCESSOR - A plethysmograph variability processor inputs a plethysmograph waveform having pulses corresponding to pulsatile blood flow within a tissue site. The processor derives plethysmograph values based upon selected plethysmograph features, determines variability values, and calculates a plethysmograph variability parameter. The variability values indicate the variability of the plethysmograph features. The plethysmograph variability parameter is representative of the variability values and provides a useful indication of various physiological conditions and the efficacy of treatment for those conditions. | 11-07-2013 |
| 20130296714 | SENSING DEVICE, A METHOD OF PREPARING A SENSING DEVICE AND A PERSONAL MOBILE SENSING SYSTEM - There is provided a sensing device comprising an electromagnetic wave emitter for emitting electromagnetic waves to a surface; an electromagnetic wave detector for detecting the emitted electromagnetic waves that are reflected from the surface; and a force transmitting member configured to transmit a force applied thereto for detection, wherein the force transmitting member is positioned relative to the electromagnetic wave emitter and electromagnetic wave detector to substantially prevent waves emitted by the electromagnetic wave emitter from travelling directly to the electromagnetic wave detector. | 11-07-2013 |
| 20130296715 | INSTRUMENT AND METHOD FOR HIGH-SPEED PERFUSION IMAGING - A high-speed laser perfusion imaging instrument including a laser source, a detector, a signal-processing unit, data memory, and a screen to display results. A section of a sample surface is illuminated with laser light; reemitted light from the irradiated surface is collected by focusing optics on a 2D array of integrating photodetectors having elements that can be accessed individually or in a pre-defined selection of pixels at high speed. This 2D array measures intensity variations at each individual pixel. Average amplitude and mean frequency of the measured signal contain information about concentration and speed of moving blood cells. For real-time imaging, exposure time is used as a parameter to measure relative perfusion changes. These data are stored and processed with the signal-processing unit to deliver 2D flow maps of the illuminated sample section, and allow a simple overlay between a conventional image and processed flow maps. | 11-07-2013 |
| 20130296716 | BARCODE SCANNING DEVICE FOR DETERMINING A PHYSIOLOGICAL QUANTITY OF A PATIENT - In order to easily prepare a medical diagnostic analysis of a patient, a barcode scanning device ( | 11-07-2013 |
| 20130303922 | HEART RATE MONITOR - A signal processing apparatus for determining a heart rate includes a plurality of sensors configured to detect changes in blood properties in a user's skin and a heart rate Kalman filter configured to compute a heart rate on the basis of signals obtained from the plurality of sensors. A method of computing a heart rate using the apparatus includes detecting changes in blood properties with a plurality of sensors, and computing with a heart rate Kalman filter the heart rate on the basis of signals obtained from the plurality of sensors. | 11-14-2013 |
| 20130317373 | System for Mitigating the Effects of Tissue Blood Volume Changes to Aid in Diagnosing Infiltration or Extravasation in Animalia Tissue - A system including a sensor and a device coupled to the sensor. The sensor is configured to detect in Animalia tissue (i) a first electromagnetic radiation extinction dominated by absorption of a first wavelength and (ii) a second electromagnetic radiation extinction dominated by scattering of a second wavelength. The device is configured to aid in diagnosing at least one of infiltration and extravasation in the Animalia tissue based on the first and second electromagnetic radiation extinctions detected by the sensor. | 11-28-2013 |
| 20130324859 | METHOD FOR PROVIDING INFORMATION FOR DIAGNOSING ARTERIAL STIFFNESS - This invention provides a method for assessing arterial stiffness noninvasively using photoplethysmography. The method of the invention for assessing arterial stiffness using photoplethysmography comprises: a user information input step, characteristic point extraction step, and arterial stiffness assessment step. In particular, the characteristic point extraction step includes the correction of the characteristic points, and the arterial stiffness assessment step includes the result of performing multiple linear regression analysis using the baPWV (brachial-ankle pulse wave velocity) value. In addition, according to this invention, arterial stiffness assessment, which was previously an expensive procedure which the user could only obtain at a specialized institution, can be carried out at low cost in the course of daily life, e.g. at home or at work, and can thus be applied in the u-healthcare and home health management service environments. | 12-05-2013 |
| 20130331710 | Pathlength Enhancement of Optical Measurement of Physiological Blood Parameters - Systems and methods for measuring a physiological parameter of tissue in a patient are provided herein. In a first example, a method of measuring a physiological parameter of blood in a patient is provided. The method includes emitting at least two optical signals for propagation through tissue of the patient, detecting the optical signals after propagation, identifying propagation pathlengths of the optical signals, and identifying detected intensities of the optical signals. The method also includes processing at least the propagation pathlengths to scale the detected intensities for determination of a value of the physiological parameter. | 12-12-2013 |
| 20130338511 | System and Method for Mitigating the Effects of Tissue Blood Volume Changes to Aid in Diagnosing Infiltration or Extravasation in Animalia Tissue - A system including a sensor and a device coupled to the sensor. The sensor is configured to detect in Animalia tissue (i) a first electromagnetic radiation extinction dominated by absorption of a first wavelength and (ii) a second electromagnetic radiation extinction dominated by scattering of a second wavelength. The device is configured to aid in diagnosing at least one of infiltration and extravasation in the Animalia tissue based on the first and second electromagnetic radiation extinctions detected by the sensor. | 12-19-2013 |
| 20130338512 | System and Method for Mitigating the Effects of Tissue Blood Volume Changes to Aid in Diagnosing Infiltration or Extravasation in Animalia Tissue - A system including a sensor and a device coupled to the sensor. The sensor is configured to detect in Animalia tissue (i) a first electromagnetic radiation extinction dominated by absorption of a first wavelength and (ii) a second electromagnetic radiation extinction dominated by scattering of a second wavelength. The device is configured to aid in diagnosing at least one of infiltration and extravasation in the Animalia tissue based on the first and second electromagnetic radiation extinctions detected by the sensor. | 12-19-2013 |
| 20140005557 | Photoplethysmography Sensors | 01-02-2014 |
| 20140024952 | Enhanced Laser Vein Contrast Enhancer with Projection of Analyzed Vein Data - It is known in the art to use an apparatus to enhance the visual appearance of the veins and arteries in a patient to facilitate insertion of needles into those veins and arteries. This application discloses a number of inventions that add additional data collection and presentation capabilities to a handheld vein enhancement apparatus and a set of processes for the collection of blood and the delivery of IV medicines that use the handheld device to mediate the process. | 01-23-2014 |
| 20140039326 | System or Method for Assessing a Subject's Peripheral Blood Circulation - A system for assessing blood circulation in a subject's limb, including detection means for detecting a signal dependent upon the arterial blood volume in a limb of the subject when the subject is in a first posture and also when the subject is in a second posture, different to the first posture; and processing means for calculating a quantitative indicator that is dependent upon the ratio of the signal for the first posture to the signal for the second posture. | 02-06-2014 |
| 20140052006 | SYSTEMS AND METHODS FOR PEDAL REVASCULARIZATION ASSESSMENT - Diffuse optical flow (DOF) sensors can be used to assess deep tissue flow. DOF sensors positioned on a foot can provide fluctuating light intensity data to an analyzer, which can then determine absolute and/or relative blood flow. The determined absolute and/or relative blood flow can be signaled to an operator, for example a surgeon for intra-operative use. DOF sensors may be utilized to assess pedal revascularization, for example to guide interventional procedures and to evaluate their efficacy. A support structure can carry a plurality of DOF sensors, such that when the support structure is placed onto a patient's foot, the DOF sensors are disposed adjacent different locations on the foot. The different locations may correspond to different topographical regions of the foot, for example different pedal angiosomes. | 02-20-2014 |
| 20140058272 | METHOD OF MEASURING AN ARTEFACT REMOVED PHOTOPLETHYSMOGRAPHIC (PPG) SIGNAL AND A MEASUREMENT SYSTEM - A method of measuring an artefact removed photoplethysmographic (PPG) signal and a measurement system for measuring an artefact removed photoplethysmographic (PPG) signal are provided. The method comprises obtaining a first set of PPG signals from a plurality of detectors at respective measurement sites using a first illumination; obtaining a second set of PPG signals from the plurality of detectors using a second illumination; obtaining at least two pairs of PPG signals, each pair comprising one PPG signal from the first set and one PPG signal from the second set, and for each pair, computing an artefact reference signal to obtain a candidate PPG signal; and choosing one of the candidate PPG signals as the artefact removed PPG signal. | 02-27-2014 |
| 20140066785 | SYSTEM AND METHOD FOR DETERMINING STROKE VOLUME OF AN INDIVIDUAL - A system for determining stroke volume of an individual. The system includes a skew-determining module that is configured to calculate a first derivative of photoplethysmogram (PPG) signals of the individual. The first derivative forms a derivative waveform. The skew-determining module is configured to determine a skew metric of the first derivative, wherein the skew metric is indicative of a morphology of at least one pulse wave detected from blood flow of the individual in the derivative waveform. The system also includes an analysis module that is configured to determine a stroke volume of the individual. The stroke volume is a function of the skew metric of the first derivative. | 03-06-2014 |
| 20140073951 | METHODS AND SYSTEMS FOR DETERMINING PHYSIOLOGICAL INFORMATION BASED ON AN ALGORITHM SETTING - A physiological monitoring system may process a physiological signal such a photoplethysmograph signal from a subject. The system may determine physiological information, such as a physiological rate, from the physiological signal. The system may use search techniques and qualification techniques to determine one or more initialization parameters. The initialization parameters may be used to calculate and qualify a physiological rate. The system may use signal conditioning to reduce noise in the physiological signal and to improve the determination of physiological information. The system may use qualification techniques to confirm determined physiological parameters. The system may also use autocorrelation techniques, cross-correlation techniques, fast start techniques, and/or reference waveforms when processing the physiological signal. | 03-13-2014 |
| 20140073952 | METHODS AND SYSTEMS FOR CONDITIONING A PHYSIOLOGICAL SIGNAL USING AN ADJUSTABLE BANDPASS FILTER - A physiological monitoring system may determine physiological information, such as physiological rate information, from a physiological signal. The system may apply a bandpass filter to the physiological signal to assist in the determination of the physiological information. The system may determine a value indicative of a physiological rate and a metric based on the physiological signal. The system may select one or more settings, such as the center frequency and bandwidth, of the bandpass filter based on the rate and based on the metric, and apply the bandpass filter to the physiological signal. | 03-13-2014 |
| 20140073953 | METHODS AND SYSTEMS FOR DETERMINING PHYSIOLOGICAL INFORMATION BASED ON THE SHAPE OF AUTOCORRELATION PEAKS - A physiological monitoring system may process a physiological signal such a photoplethysmograph signal from a subject. The system may determine physiological information, such as a physiological rate, from the physiological signal. The system may use search techniques and qualification techniques to determine one or more initialization parameters. The initialization parameters may be used to calculate and qualify a physiological rate. The system may use signal conditioning to reduce noise in the physiological signal and to improve the determination of physiological information. The system may use qualification techniques to confirm determined physiological parameters. The system may also use autocorrelation techniques, cross-correlation techniques, fast start techniques, and/or reference waveforms when processing the physiological signal. | 03-13-2014 |
| 20140073954 | METHODS AND SYSTEMS FOR DETERMINING PHYSIOLOGICAL INFORMATION USING REFERENCE WAVEFORMS - A physiological monitoring system may process a physiological signal such a photoplethysmograph signal from a subject. The system may determine physiological information, such as a physiological rate, from the physiological signal. The system may use search techniques and qualification techniques to determine one or more initialization parameters. The initialization parameters may be used to calculate and qualify a physiological rate. The system may use signal conditioning to reduce noise in the physiological signal and to improve the determination of physiological information. The system may use qualification techniques to confirm determined physiological parameters. The system may also use autocorrelation techniques, cross-correlation techniques, fast start techniques, and/or reference waveforms when processing the physiological signal. | 03-13-2014 |
| 20140073955 | METHODS AND SYSTEMS FOR DETERMINING PHYSIOLOGICAL INFORMATION BASED ON A CLASSIFICATION OF A PHYSIOLOGICAL SIGNAL - A physiological monitoring system may process a physiological signal such a photoplethysmograph signal from a subject. The system may determine physiological information, such as a physiological rate, from the physiological signal. The system may use search techniques and qualification techniques to determine one or more initialization parameters. The initialization parameters may be used to calculate and qualify a physiological rate. The system may use signal conditioning to reduce noise in the physiological signal and to improve the determination of physiological information. The system may use qualification techniques to confirm determined physiological parameters. The system may also use autocorrelation techniques, cross-correlation techniques, fast start techniques, and/or reference waveforms when processing the physiological signal. | 03-13-2014 |
| 20140073956 | METHODS AND SYSTEMS FOR DETERMINING PHYSIOLOGICAL INFORMATION BASED ON A CROSS-CORRELATION WAVEFORM - A physiological monitoring system may process a physiological signal such a photoplethysmograph signal from a subject. The system may determine physiological information, such as a physiological rate, from the physiological signal. The system may use search techniques and qualification techniques to determine one or more initialization parameters. The initialization parameters may be used to calculate and qualify a physiological rate. The system may use signal conditioning to reduce noise in the physiological signal and to improve the determination of physiological information. The system may use qualification techniques to confirm determined physiological parameters. The system may also use autocorrelation techniques, cross-correlation techniques, fast start techniques, and/or reference waveforms when processing the physiological signal. | 03-13-2014 |
| 20140073957 | METHODS AND SYSTEMS FOR QUALIFYING CALCULATED VALUES BASED ON A SUM OF DIFFERENCES - A physiological monitoring system may determine physiological information, such as physiological rate information, from a physiological signal. The system may receive a calculated value indicative of a physiological rate. The system may determine difference values between a first collection of values of the physiological signal and another collection of corresponding value of the physiological signal spaced from the first collection based on the calculated value. The system may sum the difference values, and qualify or disqualify the calculated value based on the sum. The difference values may have positive and negative values, or the system may calculate an absolute value of each difference value prior to summing. The sum may be compared to a threshold to determine whether to qualify or disqualify the calculated value. | 03-13-2014 |
| 20140073958 | METHODS AND SYSTEMS FOR DETERMINING PHYSIOLOGICAL INFORMATION USING INITIALIZATION VALUES - A physiological monitoring system may determine physiological information, such as physiological rate information, from a physiological signal. The system may generate a window of data, and determine physiological information based on the window of data. The generated window of data may include one or more samples of physiological data, from the physiological signal, and one or more initialization values. The initialization values may include random numbers, noise values, sample values, scaled values thereof, or a combination thereof. | 03-13-2014 |
| 20140073959 | METHODS AND SYSTEMS FOR DETERMINING WHEN TO OUTPUT PREVIOUSLY CALCULATED VALUES - A physiological monitoring system may determine physiological information, such as physiological rate information, from a physiological signal. The system may filter the physiological signal based on an adjustable filter to generate a filtered physiological signal. The system may perform calculations over time based on the filtered physiological signal to determine values indicative of a physiological parameter. The adjustable filter may be adjusted based on the values indicative of the physiological parameter. Some of the calculations are qualified and some of the calculations are disqualified. The system may determine a metric based on the physiological signal that is used to determine whether to output a value based on one or more previously calculated values when a current calculation is disqualified. The system may output a value based on one or more previously calculated values when a current calculation is disqualified and when a criterion based on the metric is satisfied. | 03-13-2014 |
| 20140073960 | METHODS AND SYSTEMS FOR DETERMINING PHYSIOLOGICAL INFORMATION BASED ON A COMBINED AUTOCORRELATION SEQUENCE - A physiological monitoring system may process a physiological signal such a photoplethysmograph signal from a subject. The system may determine physiological information, such as a physiological rate, from the physiological signal. The system may use search techniques and qualification techniques to determine one or more initialization parameters. The initialization parameters may be used to calculate and qualify a physiological rate. The system may use signal conditioning to reduce noise in the physiological signal and to improve the determination of physiological information. The system may use qualification techniques to confirm determined physiological parameters. The system may also use autocorrelation techniques, cross-correlation techniques, fast start techniques, and/or reference waveforms when processing the physiological signal. | 03-13-2014 |
| 20140073961 | METHODS AND SYSTEMS FOR QUALIFYING PHYSIOLOGICAL VALUES BASED ON SYMMETRY ASSOCIATED WITH A CROSS-CORRELATION SEQUENCE - A physiological monitoring system may process a physiological signal such a photoplethysmograph signal from a subject. The system may determine physiological information, such as a physiological rate, from the physiological signal. The system may use search techniques and qualification techniques to determine one or more initialization parameters. The initialization parameters may be used to calculate and qualify a physiological rate. The system may use signal conditioning to reduce noise in the physiological signal and to improve the determination of physiological information. The system may use qualification techniques to confirm determined physiological parameters. The system may also use autocorrelation techniques, cross-correlation techniques, fast start techniques, and/or reference waveforms when processing the physiological signal. | 03-13-2014 |
| 20140073962 | SYSTEM AND METHOD FOR DETERMINING STROKE VOLUME OF A PATIENT - A PPG system for determining a stroke volume of a patient includes a PPG sensor configured to be secured to an anatomical portion of the patient. The PPG sensor is configured to sense a physiological characteristic of the patient. The PPG system may include a monitor operatively connected to the PPG sensor. The monitor receives a PPG signal from the PPG sensor. The monitor includes a pulse trending module determining a slope transit time of an upslope of a primary peak of the PPG signal. The pulse trending module determines a stroke volume of the patient as a function of the slope transit time. | 03-13-2014 |
| 20140073963 | METHODS AND SYSTEMS FOR QUALIFYING PHYSIOLOGICAL VALUES BASED ON SEGMENTS FROM A CROSS-CORRELATION SEQUENCE - A physiological monitoring system may process a physiological signal such a photoplethysmograph signal from a subject. The system may determine physiological information, such as a physiological rate, from the physiological signal. The system may use search techniques and qualification techniques to determine one or more initialization parameters. The initialization parameters may be used to calculate and qualify a physiological rate. The system may use signal conditioning to reduce noise in the physiological signal and to improve the determination of physiological information. The system may use qualification techniques to confirm determined physiological parameters. The system may also use autocorrelation techniques, cross-correlation techniques, fast start techniques, and/or reference waveforms when processing the physiological signal. | 03-13-2014 |
| 20140073964 | METHODS AND SYSTEMS FOR DETERMINING ALGORITHM SETTINGS BASED ON CLASSIFICATION INFORMATION - A physiological monitoring system may determine physiological information, such as physiological rate information, from a physiological signal. The system may determine a first metric value indicative of a physiological classification based on the physiological signal. An algorithm setting may be determined based on the physiological classification. The system may determine a second metric value indicative of a different physiological classification based on the physiological signal. A different algorithm may be determined based on the different physiological classification. The algorithm setting may, for example, affect the amount of filtering applied to the physiological signal. | 03-13-2014 |
| 20140073965 | METHODS AND SYSTEMS FOR QUALIFYING PHYSIOLOGICAL VALUES BASED ON POSITIVE AND NEGATIVE VALUES - A physiological monitoring system may process a physiological signal such a photoplethysmograph signal from a subject. The system may determine physiological information, such as a physiological rate, from the physiological signal. The system may use search techniques and qualification techniques to determine one or more initialization parameters. The initialization parameters may be used to calculate and qualify a physiological rate. The system may use signal conditioning to reduce noise in the physiological signal and to improve the determination of physiological information. The system may use qualification techniques to confirm determined physiological parameters. The system may also use autocorrelation techniques, cross-correlation techniques, fast start techniques, and/or reference waveforms when processing the physiological signal. | 03-13-2014 |
| 20140073966 | METHODS AND SYSTEMS FOR DETERMINING ALGORITHM SETTINGS FOR USE IN DETERMINING PHYSIOLOGICAL INFORMATION - A physiological monitoring system may process a physiological signal such a photoplethysmograph signal from a subject. The system may determine physiological information, such as a physiological rate, from the physiological signal. The system may use search techniques and qualification techniques to determine one or more initialization parameters. The initialization parameters may be used to calculate and qualify a physiological rate. The system may use signal conditioning to reduce noise in the physiological signal and to improve the determination of physiological information. The system may use qualification techniques to confirm determined physiological parameters. The system may also use autocorrelation techniques, cross-correlation techniques, fast start techniques, and/or reference waveforms when processing the physiological signal. | 03-13-2014 |
| 20140073967 | METHODS AND SYSTEMS FOR DETERMINING PHYSIOLOGICAL INFORMATION BASED ON LOW AND HIGH FREQUENCY COMPONENTS - A physiological monitoring system may process a physiological signal such a photoplethysmograph signal from a subject. The system may determine physiological information, such as a physiological rate, from the physiological signal. The system may use search techniques and qualification techniques to determine one or more initialization parameters. The initialization parameters may be used to calculate and qualify a physiological rate. The system may use signal conditioning to reduce noise in the physiological signal and to improve the determination of physiological information. The system may use qualification techniques to confirm determined physiological parameters. The system may also use autocorrelation techniques, cross-correlation techniques, fast start techniques, and/or reference waveforms when processing the physiological signal. | 03-13-2014 |
| 20140073968 | METHODS AND SYSTEMS FOR QUALIFYING PHYSIOLOGICAL VALUES BASED ON TWO SEGMENTS - A physiological monitoring system may process a physiological signal such a photoplethysmograph signal from a subject. The system may determine physiological information, such as a physiological rate, from the physiological signal. The system may use search techniques and qualification techniques to determine one or more initialization parameters. The initialization parameters may be used to calculate and qualify a physiological rate. The system may use signal conditioning to reduce noise in the physiological signal and to improve the determination of physiological information. The system may use qualification techniques to confirm determined physiological parameters. The system may also use autocorrelation techniques, cross-correlation techniques, fast start techniques, and/or reference waveforms when processing the physiological signal. | 03-13-2014 |
| 20140073969 | MOBILE CARDIAC HEALTH MONITORING - Techniques for mobile cardiac health monitoring are disclosed. In some embodiments, a system for mobile cardiac health monitoring includes a mobile device that includes a processor configured to receive a first set of data from an optical sensor; receive a second set of data from an electrical sensor; and perform a plurality of cardiac health measurements using the first set of data from the optical sensor and the second set of data from the electrical sensor. | 03-13-2014 |
| 20140081152 | SYSTEM AND METHOD FOR DETERMINING STABILITY OF CARDIAC OUTPUT - A PPG system for determining cardiac stability of a patient includes a PPG sensor configured to be secured to an anatomical portion of the patient, wherein the PPG sensor is configured to sense a physiological characteristic of the patient. The PPG system includes a monitor operatively connected to the PPG sensor. The monitor receives a PPG signal from the PPG sensor. The monitor includes a cardiac stability analysis module configured to determine an amplitude variance of the PPG signal over a predetermined time period and configured to determine a pulse period variance of the PPG signal over the time period. The cardiac stability analysis module is configured to determine cardiac stability as a function of the amplitude variance and the pulse period variance. | 03-20-2014 |
| 20140081153 | PULSE DATA DETECTING APPARATUS, PULSE DATA DETECTING METHOD, AND STORAGE MEDIUM HAVING PULSE DATA DETECTION PROGRAM RECORDED THEREON - A pulse data detecting apparatus, pulse data detecting method and pulse data detection program are provided capable of suppressing an influence of the condition of the body surface to be measured and obtaining an appropriate measurement result under a wide range of conditions. In the present invention, light-emitting elements irradiate a skin surface with light. A light-emission driving section controls lighting-up and the light emission amount of the plurality of light-emitting elements under the control of a CPU. Light-receiving elements each receive reflected light when the skin surface is irradiated by the light-emitting elements, and output a signal. The CPU determines an appropriate combination of light-emitting elements and a light-receiving element(s) based on the output signal from each of the light-receiving elements. A pulse rate calculating section calculates a pulse rate based on the signal outputted from any of the light-receiving elements in the appropriate combination. | 03-20-2014 |
| 20140081154 | DEVICES, SYSTEMS, AND METHODS FOR ASSESSING IMPLANTS, ORGANS, TRANSPLANTS, TISSUES, SYNTHETIC CONSTRUCTS, VASCULAR GRAFTS, AND THE LIKE - A system for monitoring a body includes a surgical implant configured for implantation within a body, a sensory module coupled to the surgical implant and configured for implantation into the body in conjunction with the surgical implant, and a communication module coupled to the surgical implant and configured for implantation into a body in conjunction with the surgical implant. The sensory module is configured to monitor characteristics of the surgical implant, surrounding tissue and/or adjacent tissue. The communication module is electrically coupled to the sensory module and is configured to communicate a signal derived from said characteristics to an external entity. | 03-20-2014 |
| 20140107497 | NON-INVASIVE VALSALVA MANEUVER (VM) HEART FAILURE DIAGNOSTIC METHOD AND APPARATUS - Method and apparatus for diagnosing heart failure are disclosed. They include monitoring a subject's pulsatile blood flow with a non-invasive probe during a Valsalva maneuver (VM), processing data therefrom to calculate fall in flow, hear rate changes, Rebound, and heart stroke volume during the VM. Monitored and calculated results are compared to defined thresholds and interpreted and reported. The apparatus takes the form of a pulsatile blood flow probe on a finger or toe or in a mouthpiece facilitating the VM, the mouthpiece optionally including a pressure transducer or digital monometer to ensure that the subject is performing the VM within required pressure and time ranges. The method and apparatus include a controller or digital processor for processing and reporting the results of the monitoring, calculations, comparisons, interpretation, and reporting of the diagnostic results. | 04-17-2014 |
| 20140107498 | Wearable Apparatus and Associated Methods - A wearable apparatus including a waveguide configured to act as a conduit for light emitted from an illumination source to a photodetector via an interaction portion of the waveguide, the interaction portion configured to channel the light out of the waveguide to enable interaction of the light with a wearer's body and back into the waveguide to enable detection of the interacted light by the photodetector. | 04-17-2014 |
| 20140114199 | MAGNETIC-FLAP OPTICAL SENSOR - A magnetic-flap optical sensor has an emitter activated so as to transmit light into a fingertip inserted between an emitter pad and a detector pad. The sensor has a detector responsive to the transmitted light after attenuation by pulsatile blood flow within fingertip so as to generate a detector signal. Flaps extend from the emitter pad and along the sides of a detector shell housing the detector pad. Flap magnets are disposed on the flap ends and shell magnets are disposed on the detector shell sides. A spring urges the emitter shell and detector shell together, so as to squeeze the fingertip between its fingernail and its finger pad. The flap magnets have opposite north and south orientations from the shell magnets, urging the flaps to the detector shell sides and squeezing the fingertip sides. These spring and magnet squeezing forces occlude the fingertip blood flow and accentuate a detector signal responsive to an active pulsing of the fingertip. | 04-24-2014 |
| 20140121539 | WEARABLE PERSONAL INFORMATION SYSTEM - A personal information system is provided. The system may include a portable information device having a housing including a top surface defined at least partially by a display, a bottom surface configured with a central region in which an optical sensor, electrical connector, and data connector are positioned, the housing enclosing an internal volume in which a processor is provided, the top surface and bottom surface being coupled by a perimeter side edge extending therebetween, and a mounting structure formed at least partially around the perimeter side edge of the housing. The system may further include a frame, which may be connected to a band, the frame surrounding a void and configured to receive the mounting structure, the frame and mounting structure being releasably securable via a tongue and groove connection. The system may further comprise a dock to which the information device may be connected. | 05-01-2014 |
| 20140121540 | SYSTEM AND METHOD FOR MONITORING THE HEALTH OF A USER - Embodiments of the present application relate generally to electrical and electronic hardware, computer software, wired and wireless network communications, wearable, hand held, portable computing devices for facilitating communication of information, and the fields of healthcare and personal health. More specifically the present application relates generally to the field of personal health, and more specifically to new and useful systems and methods for monitoring the health of a user as applied to the field of healthcare and personal health. A system optically detects facial features of a user and analyzes the features along with weight information about the user to make one or more recommendations to the user that are related to the user's health. The weight information may be wirelessly transmitted to the system by a wirelessly-enabled scale (e.g., a bath scale), data capable strap band, wristband, wristwatch, digital watch, or wireless activity monitoring and reporting device. | 05-01-2014 |
| 20140135631 | BIOMETRIC MONITORING DEVICE WITH HEART RATE MEASUREMENT ACTIVATED BY A SINGLE USER-GESTURE - A biometric monitoring device measuring various biometric information is provided that allows the person to take and/or display a heart rate reading by a simple user interaction with the device, e.g., by simply touching a heart rate sensor surface area or moving the device in a defined motion pattern. Some embodiments of this disclosure provide biometric monitoring devices that allow a person to get a quick heart rate reading without removing the device or interrupting their other activities. Some embodiments provide heart rate monitoring with other desirable features such as feedback on data acquisition status. | 05-15-2014 |
| 20140142437 | SYSTEMS AND METHODS FOR MONITORING HEART FUNCTION - Characteristics of a user's heart are detected. In accordance with an example embodiment, a ballistocardiogram (BCG) sensor is used to detect heart characteristics of a user, and provide a BCG output indicative of the detected heart characteristics. The BCG output is further processed using data from one or more additional sensors, such as to reduce noise and/or otherwise process the BCG signal to characterize the user's heart function. | 05-22-2014 |
| 20140148709 | SYSTEM AND METHOD FOR INTEGRATING HEART RATE MEASUREMENT AND IDENTITY RECOGNITION - A system for integrating heart rate measurement and identity recognition is provided. The system includes a storage unit, an image sensor, an identity recognition unit and a frequency extractor. The storage unit stores a user information database. The image sensor captures a plurality of skin images of a user during a time period. The identity recognition unit receives a physiological feature from the user and recognizes the user by comparing the physiological feature with the user information database in the storage unit. The frequency extractor obtains a frequency signal by extracting a motion signal from the skin images according to the brightness change of the different color lights in the skin images during a time period. The frequency signal represents a frequency in a specific frequency interval, and it represents heart rate information of the user. A method for use in the above-mentioned system is also disclosed. | 05-29-2014 |
| 20140155758 | LOW CAPACITANCE ENDOSCOPIC SYSTEM - An endoscopic system can include an endoscope shaft having a proximal end and a distal end, and an electrically active sensor system including at least one sensor mounted proximate the distal end and positioned to sense at least one characteristic of an environment in which the distal end is located. The capacitance of the sensor system relative to earth ground maintains current leakage to a level that meets a cardiac float rating. | 06-05-2014 |
| 20140155759 | Device and method for obtaining vital sign information of a living being - A device for obtaining vital sign information of a living being comprises a detection unit that receives light in at least one wavelength interval reflected from at least a region of interest of a living being and that generates an input signal from the received light. A processing unit processes the input signal and derives vital sign information of said living being from said input signal by use of remote photoplethysmography. An illumination unit illuminates at least said region of interest with light, and a control unit controls said illumination unit based on said input signal and/or said derived vital sign information. | 06-05-2014 |
| 20140155760 | REMOTE AND LOCAL TRANSFER OF INFORMATION IN NONINVASIVE HYDRATION MEASUREMENTS - An apparatus and method for non-invasive determination of hydration, hydration state, total body water, or water concentration by quantitative spectroscopy. The system includes subsystems optimized to contend with the complexities of the tissue spectroscopy, high signal-to-noise ratio and photometric accuracy requirements, tissue sampling errors, calibration maintenance, and calibration transfer. The subsystems include an illumination subsystem, a tissue sampling subsystem, a spectrometer subsystem, a data acquisition subsystem, a computing subsystem, and a calibration subsystem. The system can include a plurality of measurement devices, configured to communicate with each other and with a remote receiver or centralized server. The invention contemplates novel ways to arrange various subsystems and to provide operability and communication among them. | 06-05-2014 |
| 20140180136 | SYSTEMS AND METHODS FOR DETERMINING CARDIAC OUTPUT - A system is provided including a thoracic bio-impedance or bio-reactance (TBIR) analysis module, a photoplethysmograph (PPG) analysis module, and a cardiac output module. The TBIR module is configured to obtain TBIR information from a TBIR detector, and the PPG analysis module is configured to obtain PPG information from a PPG detector. The cardiac output module is configured to determine the cardiac output of a patient using the TBIR information and the PPG information. | 06-26-2014 |
| 20140187971 | Spectrum analysis of coronary artery turbulent blood flow - Methods and apparatuses are described to obtain cardiac data, which includes acquiring vibrational field cardiac data from a transducer wherein the transducer measures vibration over a surface of a human's body. An unwanted coronary event is separated from vibrational cardiac data. A transient event is extracted from the vibrational cardiac heart cycle data. The transient event occurs during a diastolic interval within a heart cycle. The transient event is evaluated for a condition of coronary artery blood flow turbulence and a condition of health of a coronary artery is assessed from a feature in the vibrational frequency power spectrum estimate. | 07-03-2014 |
| 20140200460 | REAL-TIME PHYSIOLOGICAL CHARACTERISTIC DETECTION BASED ON REFLECTED COMPONENTS OF LIGHT - Embodiments relate generally to electrical and electronic hardware, computer software, wired and wireless network communications, and wearable/mobile computing devices configured to facilitate health and wellness monitoring and maintenance. More specifically, disclosed are systems, components and methods to detect physiological characteristics, such as heart rate, of an organism in real-time based on components of light. In various embodiments, a method can include receiving color channel signals including imagery data generated by, for example, an image capture device. A linear combination of the color channel signals can form a combined color channel signal. The method also can include transforming continuously the combined color channel signal to establish local maxima associated with multiple scales. Further, portions of time associated with the local maxima can be identified and data signal representing a physiological characteristic can be generated. A local maximum can indicate the presence of enhanced blood volume adjacent a tissue surface. | 07-17-2014 |
| 20140213912 | LOW POWER MONITORING SYSTEMS AND METHOD - The present disclosure relates to systems and methods for collecting patient data via a monitoring system, with reduced power consumption. In one embodiment, the monitoring system is configured to emit pulses of light, and detect the light after passing through patient tissue. The light data is emitted sporadically, and the patient physiological data is reconstructed from the sporadically sampled light data. The sporadic sampling may reduce the power consumption by the monitoring system. | 07-31-2014 |
| 20140221847 | SYSTEM AND METHOD FOR DETERMINING VITAL SIGN INFORMATION OF A SUBJECT - The present invention relates to remote photoplethysmography and in particular to a system and method for determining vital sign information of a subject. The system comprises a marker that is applied to a skin of the subject, said marker further comprising a first marker area configured to transmit light at a first wavelength and a second marker area configured to transmit light at a second wavelength, a detection unit that detects radiation received from the first marker area and from the second marker area of the marker, and an analysis unit that determines the vital sign information of the subject from the detected radiation from the first marker area and from the second marker area. | 08-07-2014 |
| 20140221848 | BIOLOGICAL INFORMATION DETECTING DEVICE, BIOLOGICAL INFORMATION DETECTING METHOD, AND BIOLOGICAL INFORMATION DETECTION PROGRAM - A biological information detecting device of the present invention, which detects the pulse of a user, includes a detecting section which outputs an observation signal detected based on a pulse wave of at least one observation site of the user and an acceleration measuring section which outputs a plurality of acceleration signals in each of a plurality of axial directions measured along with the user's movement. Based on a comparison between the observation signal and a composite acceleration signal obtained by combining the acceleration signals based on a plurality of parameters, the device estimates a specific value of each of the parameters corresponding to acceleration components of the observation signal based on the user's movement, and calculates the pulse rate of the user from a difference value obtained by subtracting a specific composite acceleration signal corresponding to the specific value of each of the estimated parameters from the observation signal. | 08-07-2014 |
| 20140243689 | BIOLOGICAL INFORMATION DETECTOR AND BIOLOGICAL INFORMATION MEASURING DEVICE - A biological information detector is adapted to be attached to a user's body, and includes a light-emitting part, a reflecting part, a light-receiving part and a processing unit. The light-emitting part is configured to emit light toward the user's body. The reflecting part is disposed in a periphery of the light-emitting part to reflect at least a part of the light emitted by the light-emitting part toward the user's body. The light-receiving part is configured to receive light reflected at the user's body to produce a light reception signal. The processing unit is configured to process the light reception signal to produce biological information. | 08-28-2014 |
| 20140276112 | SYSTEM AND METHOD FOR DETERMINING CHANGES IN A BODY STATE - A method and a system for determining changes in a body state of an individual including receiving a signal from a monitoring system, where the signal indicates a measurement of cardiac activity of the individual over a period of time and determining at least one signal feature, where the signal feature is a reoccurring event of the signal over the period of time. The method also includes determining a first interval between two successive signal features and determining a second interval between two successive first intervals. A derivative is calculated based on the second interval. Changes in the body state are identified based on the derivative. | 09-18-2014 |
| 20140276113 | Pulse Measurement Devices for Bio-Signals - A measurement device is provided for measuring a vessel pulse signal of a specific position attached by a mark. The measurement device includes a sensor, a plurality of conductive dots, a determination unit, and a measurement unit. The conductive dots are located around the sensor. The determination unit determines whether the plurality of conductive dots are connected to each other through the mark to generate a determination signal to indicate whether the sensor has been disposed in the specific position. | 09-18-2014 |
| 20140276114 | SIGNAL PROCESSOR, SIGNAL PROCESSING METHOD, AND RECORDING MEDIUM - A pulse wave detection apparatus detects a signal, and calculates a correlation coefficient between waveforms of the signal included in a first window and a second window having a predetermined duration, the correlation coefficient being smaller when a difference between dispersion of the amplitude value in the first window and dispersion of the amplitude value in the second window becomes larger. | 09-18-2014 |
| 20140276115 | HEART SOUND SIMULATOR - The disclosure includes systems and methods directed toward simulating heart sounds. The system can include an optical sensor configured to obtain data for generating a plurality of plethysmograph waveforms at a first frequency. The heart sound simulator can also include a processor in communication with the sensor. The processor can be configured to generate a heart sound signal based on at least one of the plurality of plethysmograph waveforms. | 09-18-2014 |
| 20140276116 | BIOLOGICAL INFORMATION DETECTION APPARATUS - A biological information detection apparatus includes a detection unit which has a light receiving unit receiving light from a subject, a light transmitting member which is provided on a housing surface side in contact with the subject of the biological information detection apparatus, transmits light from the subject, and comes into contact with the subject when measuring biological information of the subject, and a diaphragm unit which is provided between the light transmitting member and the detection unit, between the light transmitting member and the subject, or inside the light transmitting member, and narrows light from the subject in an optical path between the subject and the detection unit. The detection unit includes a light emitting unit which emits light to the subject, and the biological information detection apparatus has a light shielding unit which is provided between the light receiving unit and the light emitting unit. | 09-18-2014 |
| 20140276117 | Intravascular Devices, Systems, and Methods - Intravascular devices, systems, and methods are disclosed. In some embodiments, the intravascular devices include at least one electronic, optical, or electro-optical component positioned within a distal portion of the device and one or more connectors positioned at a distal portion of the device. In some instances, a tubular member forming a main body of the intravascular device includes a variable, spiral cut along a distal section such that the tubular member has a variable stiffness along the length of its distal section. In some particular instances, the tubular member is a hypotube that has an increased flexibility as it extends distally as a result of the variable, spiral cut. In some instances, the pitch and/or width of the spiral cut is varied along the length of the distal section of the hypotube to increase flexibility. Methods of making and/or assembling such intravascular devices/systems are also provided. | 09-18-2014 |
| 20140276118 | Method and System for Contactless Detection of Cardiac Activity - A system and method include contactless detecting and tracking cardiac activity by making use of a feedback control system, such as a Phase Locked Loop (PLL), in real-time or from a prerecorded signal stream. | 09-18-2014 |
| 20140276119 | WEARABLE HEART RATE MONITOR - A biometric monitoring device is used to determine a user's heart rate by using a heartbeat waveform sensor and a motion detecting sensor. In some embodiments, the device collects collecting concurrent output data from the heartbeat waveform sensor and output data from the motion detecting sensor, detects a periodic component of the output data from the motion detecting sensor, and uses the periodic component of the output data from the motion detecting sensor to remove a corresponding periodic component from the output data from the heartbeat waveform sensor. From this result, the device may determine and present the user's heart rate. | 09-18-2014 |
| 20140288435 | HEART RATE DATA COLLECTION - One innovative aspect is directed to heart rate data collection. In some implementations, a circuit includes a light detector for generating a first electrical signal based on received light. The circuit includes a switching circuit, having a first and a second configuration, configured to receive a first voltage signal based on the first electrical signal and to switch among the first and the second configurations. The circuit includes first and second sampling circuits for sampling a value of the first voltage signal when the switching circuit is in the first configuration and second configurations, respectively. The circuit includes an ambient light cancellation circuit for generating a current signal to counter a first component of the first electrical signal when the first switching circuit is in the first configuration. | 09-25-2014 |
| 20140288436 | WEARABLE HEART RATE MONITOR - A biometric monitoring device is used to determine a user's heart rate by using a heartbeat waveform sensor and a motion detecting sensor. In some embodiments, the device collects collecting concurrent output data from the heartbeat waveform sensor and output data from the motion detecting sensor, detects a periodic component of the output data from the motion detecting sensor, and uses the periodic component of the output data from the motion detecting sensor to remove a corresponding periodic component from the output data from the heartbeat waveform sensor. From this result, the device may determine and present the user's heart rate. | 09-25-2014 |
| 20140296720 | REFLECTION-DETECTOR SENSOR POSITION INDICATOR - A reflection-detector sensor position indicator comprises emitters that transmit light having a plurality of wavelengths. A detector outputs a sensor signal. At least one reflection detector outputs at least one sensor position signal. An attachment assembly attaches the emitters, the detector and the reflection detector onto a tissue site. A sensor-on condition indicates that the attachment assembly has positioned the emitters generally centered over a fingernail, the detector on a fingertip opposite the fingernail and the reflection detector over the fingernail. The sensor signal, in the sensor-on condition, is at least substantially responsive to the emitter transmitted light after attenuation by pulsatile blood flow perfused within a fingernail bed underneath the fingernail. The sensor position signal, in the sensor-on condition, is at least substantially responsive to the emitter transmitted light after reflection off of the fingernail. | 10-02-2014 |
| 20140303506 | Three Dimensional Imaging of Veins - An apparatus and method for creating a three dimensional imaging system is disclosed. There is a first source of laser light and a second source of laser light having a wavelength different from the wavelength of the laser light of the first source. The laser light from the first and second sources are combined, and the combined laser light is transmitted to a scanner. The scanner further transmits the combined light to a surface to be imaged. | 10-09-2014 |
| 20140309537 | WIRELESS PLETHYSMOGRAM SENSOR UNIT, A PROCESSING UNIT FOR PLETHYSMOGRAM AND A PLETHYSMOGRAM SYSTEM - A wireless plethysmogram sensor unit is capable of obtaining a plethysmogram from a living tissue of a measuring object and of transmitting the plethysmogram to a processing unit outside the wireless plethysmogram sensor unit. The sensor unit includes a light source to emit measuring light into the living tissue and a light receiving element to receive light emerging from the tissue, which is accompanied by pulsation caused by absorption by arteries in the tissue. A memory stores a plethysmogram obtained in accordance with the light received by the light receiving element. A short range wireless communicator transmits the plethysmogram to the processing unit. A power source provides power to other elements in the sensor unit, and a controller controls the elements of the sensor unit. | 10-16-2014 |
| 20140316283 | ENDOSCOPE SYSTEM, PROCESSOR DEVICE OF ENDOSCOPE SYSTEM, AND IMAGE PROCESSING METHOD - Even if the ratio between blue and green components of illumination light is changed, a plurality of types of blood vessels at different depths are reliably distinguished. A blue signal B, a green signal G, a red signal R is obtained by imaging the subject using a color CCD | 10-23-2014 |
| 20140316284 | ANISOTROPIC PROCESSING OF LASER SPECKLE IMAGES - An embodiment in accordance with the present invention provides a system and method for imaging living tissue and processing laser speckle data anisotropically to calculate laser speckle contrast preferentially along the direction of blood flow. In the present invention, raw laser speckle images are obtained and processed resulting in the anisotropic laser speckle images. The system and method involve the determination of the direction of blood flow for every pixel within the region of interest (primary pixel) and subsequent extraction of a set of secondary pixels in the spatio-temporal neighborhood of the primary pixel that is anisotropic in the direction of blood flow. Speckle contrast is then calculated for every primary pixel as the ratio of standard deviation and mean of all secondary pixels in this anisotropic neighborhood and collectively plotted using a suitable color mapping scheme to obtain an anisotropic laser speckle contrast image of the region of interest. | 10-23-2014 |
| 20140323879 | SYSTEMS, DEVICES AND METHODS FOR MONITORING HEMODYNAMICS - Systems, devices and methods for monitoring hemodynamics are described. The systems and methods generally involve directing light toward an area of the body and detecting the resulting scattered light. The scattered light is detected and an electrical signal representative of the scattered light intensity is generated from the detected light. The electrical signal is analyzed by measuring temporal fluctuations of such signals to monitor pathological states over time including hemorrhagic shock, hypoxia, and tissue graft vascularization. Such monitoring can have significant benefits to patients. | 10-30-2014 |
| 20140323880 | DETERMINING A RECOVERY INDICATOR USING HEART RATE DATA - Embodiments provide physiological measurement systems, devices and methods for continuous health and fitness monitoring. A wearable strap may detect reflected light from a user's skin, where data corresponding to the reflected light is used to automatically and continually determine a heart rate of the user. The wearable strap may monitor heart rate data including heart rate variability, resting heart rate, and sleep quality. The systems may include a processing module that generates an indicator of physical recovery based on the heart rate data. The recovery indicator may be used to determine strain related to an exercise routine, qualitative information on the user's health, whether to alter a user's exercise plan, and so forth. | 10-30-2014 |
| 20140330132 | PHYSIOLOGICAL CHARACTERISTIC DETECTION BASED ON REFLECTED COMPONENTS OF LIGHT - Embodiments relate generally to the health field, and more specifically to a new and useful method for measuring detecting physiological characteristics, such as heart rate, of an organism. In one embodiment, a method includes detecting one or more surfaces associated with an organism, and receiving components of light reflected from the one or more surfaces of the organism. The components can be represented as data from a light capture device. Also, the method can include identifying subsets of light components, each subset of light components associated with one or more frequencies, identifying at a processor a time-domain component associated with a change in blood volume associated with the one or more surfaces of the organism, and extracting a physiological characteristic based on the time-domain component. | 11-06-2014 |
| 20140330133 | SYSTEMS AND METHODS FOR MEASURING AND CHARACTERIZING INTERIOR SURFACES OF LUMINAL STRUCTURES - A digital topographic model of the luminal surface is generated by projecting an optical pattern on the luminal surface from the first location within the lumen. At least a portion of the projected pattern is detected from a second location within the lumen which is based apart from the first location. The dimensions of the luminal wall can be measured by triangulation in order to produce the digital topographic model of the body lumen. | 11-06-2014 |
| 20140330134 | DETECTION AND MONITORING OF ATRIAL FIBRILLATION - Enhanced real-time realizable AF algorithm for accurate detection of, and discrimination between, NSR, AF, PVC, and PAC. The method of these teachings includes an AF detection method having a modified Poincare approach in order to differentiate various patterns of PAC and PVC from NSR and AF. The method of these teachings can also apply to the Kullback-Leibler divergence or the Turning Point Ratio (TPR) to differentiate between various patterns of PAC and PVC from NSR and AF. | 11-06-2014 |
| 20140343436 | DISPOSABLE ACTIVE PULSE SENSOR - A disposable active pulse sensor has an emitter that generates optical radiation having a plurality of wavelengths, a detector that is responsive to the optical radiation and an unbalanced electrical motor that vibrates when energized. A tape assembly removably attaches the emitter, the detector and the unbalanced electrical motor to a tissue site. The tape assembly also physically mounts the emitter, the detector and the unbalanced electrical motor in a spatial arrangement so that vibration from the unbalanced electrical motor induces pulsatile blood flow within the tissue site, the emitter transmits the optical radiation into the tissue site and the detector generates a sensor signal responsive to the intensity of the optical radiation after attenuation by the pulsatile blood flow within the tissue site. | 11-20-2014 |
| 20140343437 | SYSTEM AND METHOD FOR PULSE RATE CALCULATION USING A SCHEME FOR ALTERNATE WEIGHTING - Embodiments of the present invention relate to a method for analyzing pulse data. In one embodiment, the method comprises receiving a signal containing data representing a plurality of pulses, the signal generated in response to detecting light scattered from blood perfused tissue. Further, one embodiment includes performing a pulse identification or qualification algorithm on at least a portion of the data, the pulse identification or qualification algorithm comprising at least one constant, and modifying the at least one constant based on results obtained from performing the pulse identification or qualification algorithm, wherein the results indicate that a designated number of rejected pulses has been reached. | 11-20-2014 |
| 20140350413 | Localized Physiologic Status From Luminosity Around Fingertip Or Toe - Spatial light response around a fingertip or toe of a subject in response to electrical stimulation can be associated to a specified remote particular body anatomy, location, component, or system such as for providing a particularized physiological status indicator or other particularized response indication that is particular to the specified particular body anatomy, location, component, or system. | 11-27-2014 |
| 20140358012 | HEART RATE DATA COLLECTION - One innovative aspect is directed to heart rate data collection. In some implementations, a circuit includes a light detector for generating a first electrical signal based on received light. The circuit includes a switching circuit, having a first and a second configuration, configured to receive a first voltage signal based on the first electrical signal and to switch among the first and the second configurations. The circuit includes first and second sampling circuits for sampling a value of the first voltage signal when the switching circuit is in the first configuration and second configurations, respectively. The circuit includes an ambient light cancellation circuit for generating a current signal to counter a first component of the first electrical signal when the first switching circuit is in the first configuration. | 12-04-2014 |
| 20140358013 | BIOLOGICAL INFORMATION DETECTOR AND BIOLOGICAL INFORMATION MEASURING DEVICE - A biological information detector includes a light-emitting part, a first wiring, a first bonding wire and a protecting part. The light-emitting part is configured to emit a light. The first wiring includes a first connecting section. The first bonding wire electrically connects the light-emitting part and the first connecting section of the first wiring. The protecting part covers the light-emitting part, the first wiring and the first bonding wire. The protecting part is formed from a material that is transparent with respect to the light emitted by the light-emitting part. | 12-04-2014 |
| 20140371603 | BIOLOGICAL STATE ESTIMATION DEVICE AND COMPUTER PROGRAM - Provided is a technique for more accurately ascertaining a person's status. In particular, the present invention makes it possible to accurately ascertain the detection of alcohol or the like. A fluctuation waveform of an ultra-low-frequency band is found from a biosignal collected from a biosignal measuring means, the fluctuation waveform is plotted as coordinate points on a four-quadrant coordinate system on the basis of a predetermined standard, and biological status is estimated on the basis of temporal change in the coordinate points. According to the method of the present invention for plotting a fluctuation waveform as coordinate points on a four-quadrant coordinate system on the basis of the predetermined standard, change in the fluctuation waveform of the ultra-low-frequency band can be expanded or highlighted and thus perceived, and therefore the present invention is adapted for more accurately perceiving change in a person's status. | 12-18-2014 |
| 20150011898 | Physiological Metric Estimation Rise and Fall Limiting - Methods and apparatus disclosed herein use a filtering technique to improve the accuracy of the results achieved when processing data provided by a physiological sensor. The disclosed filtering technique corrects many of the accuracy problems associated with physiological sensors, particularly PPG sensors. Broadly, the filtering technique adjusts a current filtered estimate of a physiological metric as a function of a rate limit based on a comparison between an instantaneous estimate of the physiological metric and the current filtered estimate. | 01-08-2015 |
| 20150018693 | METHOD AND APPARATUS FOR MONITORING A SUBJECT FOR ATRIAL FIBRILLATION - What is disclosed is a method for monitoring a subject for cardiac arrhythmia such as atrial fibrillation using an apparatus that can be comfortably worn by the subject around an area of exposed skin where a photoplethysmographic (PPG) signal can be registered. In one embodiment, the apparatus is a reflective or transmissive wrist-worn device with emitter/detector pairs fixed to an inner side of a band with at least one illuminator emitting source light at a specified wavelength band. The illuminator is paired to a respective photodetector comprising one or more sensors that are sensitive to a wavelength band of its paired illuminator. The photodetector measures intensity of sensed light emitted by a respective illuminator. The signal obtained by the sensors comprises a continuous PPG signal. The continuous PPG signal analyzed for peak-to-peak pulse points from which the existence of cardiac arrhythmia such as atrial fibrillation event can be determined. | 01-15-2015 |
| 20150025393 | WEARABLE HEART RATE MONITOR - Some embodiments provide a wearable fitness monitoring device including a motion sensor and a photoplethysmographic (PPG) sensor. The PPG sensor includes (i) a periodic light source, (ii) a photo detector, and (iii) circuitry determining a user's heart rate from an output of the photo detector. Some embodiments provide methods for operating a heart rate monitor of a wearable fitness monitoring device to measure one or more characteristics of a heartbeat waveform. Some embodiments provide methods for operating the wearable fitness monitoring device in a low power state when the device determines that the device is not worn by a user. Some embodiments provide methods for operating the wearable fitness monitoring device in a normal power state when the device determines that the device is worn by a user. | 01-22-2015 |
| 20150025394 | WEARABLE HEART RATE MONITOR - Some embodiments provide a wearable fitness monitoring device including a motion sensor and a photoplethysmographic (PPG) sensor. The PPG sensor includes (i) a periodic light source, (ii) a photo detector, and (iii) circuitry determining a user's heart rate from an output of the photo detector. Some embodiments provide methods for operating a heart rate monitor of a wearable fitness monitoring device to measure one or more characteristics of a heartbeat waveform. Some embodiments provide methods for operating the wearable fitness monitoring device in a low power state when the device determines that the device is not worn by a user. Some embodiments provide methods for operating the wearable fitness monitoring device in a normal power state when the device determines that the device is worn by a user. Some embodiments provide methods for using response characteristics of the user's skin to adjust a gain and/or light emission intensity of the heart rate monitor. | 01-22-2015 |
| 20150038853 | OPTICAL DETECTION OF MOTION EFFECTS - There is provided a wearable item configured to be placed at least partially against a skin of a person; and an optically sensitive detector mounted to the wearable item and configured to detect optical signals reflected from the skin of the person, wherein the detected optical signals represent a relative motion between the wearable item and the skin of the person and wherein the optically sensitive detector is mounted to the wearable item such that there is a predetermined space between the optically sensitive detector and the skin of the person. | 02-05-2015 |
| 20150038854 | SYSTEM AND METHOD FOR DETECTING WORSENING OF HEART FAILURE BASED ON RAPID SHALLOW BREATHING INDEX - Systems and methods for detecting a worsening of patient's heart failure condition based, at least in part, on an increasing trend in a representative rapid shallow breathing index (RSBI) value over multiple days. The RSBI value may be a minimum RSBI, and more particularly may be a minimum RSBI value determined for an afternoon portion of each of the multiple days. The minimum RSBI value measured during an afternoon portion of the day may be more sensitive to changes in a patient's respiration, particularly when a patient is expected to be more active, and thus, may more readily exhibit an increasing trend when patient's heart failure is in decline. | 02-05-2015 |
| 20150065889 | BODILY WORN MULTIPLE OPTICAL SENSORS HEART RATE MEASURING DEVICE AND METHOD - A Photoplethysmography-based sensor for measuring heart rate is provided herein. The sensor may include a first light source and a second light source configured to illuminate a body tissue by a first light and a second light respectively; and a first and a second light detectors, each configured to detect light comprising portions of said first light and of said second light, transferred through the body tissue; and a processor with an analog measurement part configured to: receive light intensity readings of at least a portion of light as sensed by each one of both sensors and coming from each one of both sources; and calculate a measure of tissue absorption based on ratios of light portions transmitted by each one of both sources and measured by each one of both detectors. | 03-05-2015 |
| 20150065890 | OPTICAL BIOMETRIC SYSTEM AND METHOD FOR USING SAME - An optical biometric system ( | 03-05-2015 |
| 20150065891 | Method and Apparatus for Detecting Atrial Fibrillation - Method of determining atrial fibrillation including determining if a patient's pulse beats form an irregular pattern and only if so, indicating the presence of an irregular pulse to the patient and obtaining an electrocardiogram for determining atrial fibrillation. Initially, a pulse is detected at regular time intervals of a first appendage of the patient when motionless using a pulse detector secured to the first appendage and pulse rhythms from a succession of time intervals are detected each corresponding to a respective interval of time between successive pulse beats of a sequence of the pulse beats. Then, an electrically conductive unit is attached to a second appendage of the patient, or a wearable electrocardiogram is attached to the patient, and electrocardiograms signals are detected simultaneously with pulse rhythms while the first appendage is motionless and analyzed to determine whether, in combination, they are indicative of atrial fibrillation. If so, an indication of atrial fibrillation is provided at least to the patient. | 03-05-2015 |
| 20150065892 | PULSE WAVE MEASURING DEVICE - A pulse wave measuring device includes: a connector that is disposed on a main unit; an external sensor that includes an external light-emitting module radiating light to a human body to be measured and an external light-receiving module receiving at least one of reflected light and transmitted light originating from the external light-emitting module and the human body so as to measure a pulse wave; an first controller that switches the external light-emitting module ON and OFF; an second controller that switches the external light-receiving module ON and OFF; and an external sensor connection determination section that determines a connection between the external sensor and the connector in accordance with a transient response of the external light-receiving module, wherein, after the external sensor connection determination section determines that the external sensor is connected to the connector, a measurement of the pulse wave by using the external sensor is started. | 03-05-2015 |
| 20150080745 | Scanned Laser Vein Contrast Enhancer Using a Single Laser - The present invention is a Miniature Vein Enhancer that includes a Miniature Projection Head. The Miniature Projection Head may be operated in one of three modes, AFM, DBM, and RTM. The Miniature Projection Head of the present invention projects an image of the veins of a patient, which aids the practitioner in pinpointing a vein for an intravenous drip, blood test, and the like. The Miniature projection head may have a cavity for a power source or it may have a power source located in a body portion of the Miniature Vein Enhancer. The Miniature Vein Enhancer may be attached to one of several improved needle protectors, or the Miniature Vein Enhancer may be attached to a body similar to a flashlight for hand held use. The Miniature Vein Enhancer of the present invention may also be attached to a magnifying glass, a flat panel display, and the like. | 03-19-2015 |
| 20150080746 | SYSTEMS AND METHODS FOR COORDINATING MUSCULOSKELETAL AND CARDIOVASCULAR OR CEREBROVASCULAR HEMODYNAMICS - Described herein are methods for determining a target musculoskeletal activity cycle (MSKC) to cardiac cycle (CC) timing relationship. The method may include detecting a first characteristic of a signal responsive to a CC timing of a user that repeats at a frequency that corresponds to a heart rate of the user; detecting a second characteristic of a signal responsive to a rhythmic musculoskeletal cycle activity (MSKC) timing of the user that repeats at a frequency that corresponds to the MSKC rate of the user; determining a value representative of an actual timing relationship between the first characteristic and the second characteristic; detecting a third characteristic of a signal corresponding to a physiological metric that varies with the actual timing relationship between the first and second characteristics; and determining a target value representative of a preferred timing relationship between the first and second characteristics. | 03-19-2015 |
| 20150088002 | HYDRATION MONITORING - Implementations disclosed herein provide a hydration monitoring technology. In one implementation, a hydration monitoring system measures whole body hydration levels by analysis of changes in vascular volume caused by pulsatile pressure waves and in tissue volume in response to the pulsatile pressure. The hydration monitoring system includes a hydration monitoring device, which uses a light-based measurement technique to measure hydration levels and heart rate during different activities and at rest. In one implementation, a light source operatively connected to a light sensor, transmits light, reflectively or transmissively, through tissue. The light sensor detects absorption of the light. Based on wavelength measurements of the detected light, the hydration monitoring device produces a PPG waveform representing characteristic effects of hydration. Based on analysis of the PPG waveform, the hydration monitoring device determines a hydration metric representative of hydration levels in the body. | 03-26-2015 |
| 20150088003 | DATA INTEGRITY - Implementations disclosed herein provide a monitoring technology. In one implementation, a monitoring system measures whole body biometric levels by analysis of changes in vascular volume caused by pulsatile pressure waves and in tissue volume in response to the pulsatile pressure. The monitoring system includes a monitoring device, which uses a light-based measurement technique to measure biometric levels during different activities and at rest. A light source operatively connected to a light sensor, transmits light, reflectively or transmissively, through tissue. The light sensor detects absorption of the light. Based on wavelength measurements of the detected light, the monitoring device produces a PPG waveform representing characteristic effects of certain physiological parameters. PPG pulse data is selected that satisfies a data integrity condition. Based on analysis of the selected PPG pulse data, the monitoring device computes a biometric. Biometric data results can then be selected that satisfy a result integrity condition. | 03-26-2015 |
| 20150099985 | Physiological Signal Measurement Apparatus Capable of Automatically Adjusting a Measure Position and Method of Utilizing the Apparatus - A physiological signal measurement apparatus is capable of automatically adjusting a measure position and suitable for installed on a support element to measure a physiological signal of a user. The physiological signal measurement apparatus includes a movable element, a physiological signal sensing element, a pressure sensing unit and a microcontroller unit. The movable element has a first pressure. The user exerts a second pressure on the physiological signal sensing element, and exerts a third pressure on the support element. The pressure sensing unit senses the first pressure, the second pressure and the third pressure to generate a first pressure signal, a second pressure signal and a third pressure signal. The microcontroller unit receives the physiological signals and the pressure signals, and controls the movable element by the pressure signals and the physiological signals, in order to increase the quality of signal measurement. | 04-09-2015 |
| 20150099986 | MASK - A mask configured to be attached to the face of a subject includes a wall section that defines an internal space and covers at least a portion of a nose and a mouth of the subject, an expired gas introduction section that is disposed in the internal space and introduce the subject's expired gas, and a communication section defining a communication channel through which the subject's expired gas introduced from the expired gas introduction section is introduced into an expired gas concentration detection sensor. The position of the expired gas introduction section in the internal space is variable. | 04-09-2015 |
| 20150099987 | HEART RATE VARIABILITY EVALUATION FOR MENTAL STATE ANALYSIS - A system and method for evaluating heart rate variability for mental state analysis is disclosed. Video of an individual is captured while the individual consumes and interacts with media. The video is analyzed to determine heart rate information with heart rate variability (HRV) being calculated and being understood to be in response to stimuli from the media. The analysis of heart rate variability is based upon a sympathovagal balance derived from a ratio of low frequency heart rate values to high frequency heart rate values. Heart rate variability is analyzed to determine changes in an individual's mental state related to the stimuli. Heart rate variability is determined and thereby mental state analysis is performed to evaluate media. | 04-09-2015 |
| 20150105670 | SYSTEM FOR CAMERA-BASED VITAL SIGN MEASUREMENT - The present invention relates to the measurement of vital signs such as a respiratory rate or a heart rate. In particular, a system ( | 04-16-2015 |
| 20150105671 | BIOLOGICAL INFORMATION MEASUREMENT DEVICE - A biological information measurement device includes a device main body and a band configured to secure the device to a body part of a user. The device main body contacts the user's skin to thereby acquire biological information about the user, and presents a non-rectangular parallelogram surface in plan view. The parallelogram surface has two longitudinal edges disposed along a longitudinal direction, and two oblique edges disposed along an oblique direction that is transverse to, but not perpendicular to, the longitudinal direction. The band is attached to the oblique edges of the device main body, and generally extends in the longitudinal direction. | 04-16-2015 |
| 20150105672 | PHOTOBIOLOGICAL MEASUREMENT APPARATUS - A photobiological measurement apparatus | 04-16-2015 |
| 20150112206 | HEAT STIMULUS TRANSMISSION EVALUATION METHOD AND EVALUATION METHOD OF DRUG BENEFIT BY THERMAL STIMULATION TRANSMISSION - According to the present invention, the application of thermal stimulus which are effective on medical conditions are provided in a database. And the increase rate of blood flow before and after applying stimulus to a specific site is compared with the increase rate in the database storing the rate of increase which is previously effective on a medical condition. And when the increase rate of blood flow by application of the thermal stimulus at a selected specific site reaches the increasing blood rate flow which is previously effective on a medical condition, the effect of thermal stimulus is recognized. And the increase rate of blood flow which is effective on a medical condition is 30% or more, preferably 100% or more. | 04-23-2015 |
| 20150112207 | PULSE WAVE SENSOR AND BIOLOGICAL INFORMATION MEASURING DEVICE USING THE SAME - A pulse wave sensor includes a sensor substrate that has a first main surface and a second main surface that are in a front-back relationship with each other, has formed therein a first opening part and a second opening part that pass through the first and second main surfaces, and includes a non-transparent portion at least between the first opening part and the second opening part, a light emitting element disposed within the first opening part and having a light emitting surface, and a reflected light detection element having a detection surface on which light reflected after being emitted from the light emitting surface of the light emitting element is incident. | 04-23-2015 |
| 20150112208 | MEDICATION MANAGEMENT - The technology described in this document is embodied in a method that includes processing data in a first dataset that represents time-varying information about at least one pulse pressure wave propagating through blood in a subject acquired at a location of the subject. The method also includes providing, based on the data, information about a medication regimen of the subject. | 04-23-2015 |
| 20150119725 | SYSTEM AND METHOD FOR OBTAINING BODILY FUNCTION MEASUREMENTS USING A MOBILE DEVICE - Methods, systems, computer-readable media, and apparatuses for obtaining at least one bodily function measurement are presented. A mobile device includes an outer body sized to be portable for user, a processor contained within the outer body, and a plurality of sensors physically coupled to the outer body. The sensors are configured to obtain a first measurement indicative of blood volume and a second measurement indicative of heart electrical activity in response to a user action. A blood pressure measurement is determined based on the first measurement and the second measurement. The sensors also include electrodes where a portion of a user's body positioned between the electrodes completes a circuit and a measurement to provide at least one measure of impedance associated with the user's body. A hydration level measurement is determined based on the measure of impedance. | 04-30-2015 |
| 20150126875 | METHOD AND SYSTEM FOR SCREENING OF ATRIAL FIBRILLATION - The present disclosure provides a description of various methods and systems associated with determining possible presence of Atrial Fibrillation (AF). In one example, a camera of a client device, such as a mobile phone, may acquire a series of images of a body part of a user. A plethysmographic waveform may be generated from the series of images. An autocorrelation function may be calculated from the waveform, and a number of features may be computed from the autocorrelation function. Based on an analysis of the features, a determination may be made about whether the user is experience AF. Such determined may be output to a display of the mobile phone for user review. | 05-07-2015 |
| 20150289801 | Micro Vein Enhancer - The present invention is a Miniature Vein Enhancer that includes a Miniature Projection Head. The Miniature Projection Head may be operated in one of three modes, AFM, DBM, and RTM. The Miniature Projection Head of the present invention projects an image of the veins of a patient, which aids the practitioner in pinpointing a vein for an intravenous drip, blood test, and the like. The Miniature projection head may have a cavity for a power source or it may have a power source located in a body portion of the Miniature Vein Enhancer. The Miniature Vein Enhancer may be attached to one of several improved needle protectors, or the Miniature Vein Enhancer may be attached to a body similar to a flashlight for hand held use. The Miniature Vein Enhancer of the present invention may also be attached to a magnifying glass, a flat panel display, and the like. | 10-15-2015 |
| 20150297102 | HEART ACTIVITY MEASUREMENT - An apparatus includes a strap configured to enable the apparatus to be worn by a user; an optical measurement element configured to be placed on a skin of the user, and to measure data related to heart activity of the user; communication circuitry configured to transmit the data related to heart activity of the user according to a Bluetooth standard on a 2.4 GHz band; and an antenna coupled with the communication circuitry, and configured to access a radio interface to transmit the data related to heart activity of the user. | 10-22-2015 |
| 20150313549 | HEART RATE MONITORING METHOD AND DEVCIE WITH MOTION NOISE SIGNAL REDUCTION - A heart rate monitoring method and device to analyze signals in time or frequency domain with motion noise signal reduction comprises at least two LEDs for providing two different light signals for incidenting into a portion of a human, a photodetector for detecting two reflected and scattered signals reflected and scattered form the human, and a processor for eliminating motion noise signal cause by any motion of the human. The processor may compare the two reflected and scattered signals and execute an independent component analysis to obtain a correct heart rate signal in time domain, and then the processor can calculate the correct heart rate. The processor may transform the two reflected and scattered signals form time domain to frequency domain and compare the two reflected and scattered signals in frequency domain to obtain a heart rate signal in frequency domain, and then the processor can calculate the heart rate. | 11-05-2015 |
| 20150327782 | MEASURING APPARATUS, PROBE PORTION, AND CONNECTING CABLE - A measuring apparatus ( | 11-19-2015 |
| 20150327787 | DEVICE, SYSTEM AND METHOD FOR DETECTION AND PROCESSING OF HEARTBEAT SIGNALS - A heart beat detection device comprises at least one optical reflection sensor to be positioned on the skin of a person, The sensor unit is provided with a light emitter and a corresponding light receiver which converts the light reflected by the skin into an electric signal and comprises electrically adjustable opt cal filters connected to the emitter, to the receiver or to both of them in order to select, upon operation, a desired light wavelength and perform processing of the signals thus obtained in order to reinforce the heart beat signal. A system with this device and a detection method are also described. | 11-19-2015 |
| 20150342468 | NON-INVASIVE VALSALVA MANEUVER (VM) HEART FAILURE DIAGNOSTIC METHOD AND APPARATUS - Method and apparatus for diagnosing heart failure are disclosed. They include monitoring a subject's pulsatile blood flow with a non-invasive probe during a Valsalva maneuver (VM), processing data therefrom to calculate fall in flow, hear rate changes, Rebound, and heart stroke volume during the VM. Monitored and calculated results are compared to defined thresholds and interpreted and reported. The apparatus takes the form of a pulsatile blood flow probe on a finger or toe or in a mouthpiece facilitating the VM, the mouthpiece optionally including a pressure transducer or digital monometer to ensure that the subject is performing the VM within required pressure and time ranges. The method and apparatus include a controller or digital processor for processing and reporting the results of the monitoring, calculations, comparisons, interpretation, and reporting of the diagnostic results. | 12-03-2015 |
| 20150342477 | DYNAMIC OPERATION OF OPTICAL HEART RATE SENSORS - An optical heart rate sensor includes an optical source configured to illuminate one or more blood vessels through a user's skin, an optical sensor configured to measure reflected illumination from the blood vessels, and one or more energy storage cells. A controller operates the optical source and optical sensor at a first rate of energy consumption during a first condition, and operates the optical source and optical sensor at a second rate of energy consumption during a second condition. | 12-03-2015 |
| 20150342478 | SYSTEMS AND METHODS FOR DETECTING AND MONITORING ARRHYTHMIAS USING THE PPG - Systems and methods for detecting and monitoring arrhythmias from a signal are provided. A signal processing system may transform a signal using a wavelet transformation and analyze changes in features of the transformed signal to detect pulse rhythm abnormalities. For example, the system may detect pulse rhythm abnormalities by analyzing energy parameters, morphology changes, and pattern changes in the scalogram of a PPG signal. Further, the system may detect pulse rhythm abnormalities by analyzing both the PPG signal and its corresponding scalogram. Physiological information, such as cardiac arrhythmia, may be derived based on the detected pulse rhythm abnormality. | 12-03-2015 |
| 20150342479 | DATA RECOVERY FOR OPTICAL HEART RATE SENSORS - An optical heart rate sensor stores data indicating the timing of heart beats in a first-in-first-out rolling buffer. During a first condition, new data is added to the rolling buffer and adjusted such that a duration preceding a newly detected heart beat is closer to an average duration between each pair of consecutive heart beats stored in the rolling buffer if the duration preceding the newly detected heart beat differs from the average duration by more than a duration threshold. The rolling buffer is cleared when a number of data adjustments over a predetermined time period exceeds a counting threshold. The rolling buffer is then repopulated such that the duration between each pair of consecutive heart beats is equal to a most recent duration between consecutive heart beats that did not differ from the average duration by more than the duration threshold. | 12-03-2015 |
| 20150342480 | OPTICAL PULSE-RATE SENSING - An optical pulse-rate sensor includes a fixture, a light emitter, a light sensor, and a light stop. The fixture has a rim configured to contact a skin surface and enclose an area of the surface. The light emitter and light sensor are each coupled to the fixture and positioned opposite the area. The light stop is coupled to the fixture and positioned between the light emitter and the light sensor to shield the light sensor from direct illumination by the light source. | 12-03-2015 |
| 20150342481 | MOTION COMPENSATION FOR OPTICAL HEART RATE SENSORS - A method for an optical heart rate sensor comprises recognizing a minimum amount of motion of the optical heart rate sensor during a testing duration and recognizing an average amount of motion of the optical heart rate sensor during the testing duration. The motion of the optical heart rate sensor is compensated for if the minimum amount of motion during the testing duration exceeds a first threshold, even if the average amount of motion during the testing duration is less than a second threshold, greater than the first threshold. The motion of the optical heart rate sensor is not compensated for if the minimum amount of motion during the testing duration is below the first threshold, even if the average amount of motion during the testing duration is greater than the second threshold. | 12-03-2015 |
| 20150342483 | SYSTEM FOR NON-INVASIVE MEASUREMENT OF INTRACRANIAL PRESSURE AND ASSOCIATED METHODS - An intracranial pressure measuring system comprising a light source, a controller operatively coupled to the light source and a sensor operatively coupled to the controller. The controller is configured to operate the light source to emit light within a wavelength range that can be reflected by ocular vasculature of a person. The sensor is configured to measure a diagnostic reflectance being the intensity of light reflected by the ocular vasculature. The controller is configured to determine if the diagnostic reflectance deviates beyond a threshold and to perform an action responsive to the diagnostic reflectance deviating beyond the threshold. | 12-03-2015 |
| 20150342525 | WEARABLE ELECTRONIC DEVICE - A wearable electronic device includes a composite band, a touch-sensor display, a skin sensor, and a course of electrical conductors. The composite band forms a loop having two or more rigid segments and a flexible segment coupled between the rigid segments. The touch-sensor display is arranged in a first of the rigid segments, and a skin sensor is arranged in a second of the rigid segments. The course of electrical conductors runs between the first and second rigid segments, inside the flexible segment. | 12-03-2015 |
| 20150351646 | METHOD FOR THE ESTIMATION OF THE HEART-RATE AND CORRESPONDING SYSTEM - Method for the estimation of the heart-rate using photoplethysmography on a body organ, for example a wrist of a user, comprising acquiring optically from said body organ a heart beat signal, acquiring an acceleration signal representative of the acceleration of said body organ, selecting data blocks of said acquired heart beat signal and acceleration signal, compensating said heart beat signal by the acceleration signal, calculating the heart rate value on the basis of said compensated heart beat signal. | 12-10-2015 |
| 20150359443 | METHOD AND SYSTEM FOR SCREENING OF ATRIAL FIBRILLATION - The present disclosure provides a description of various methods and systems associated with determining possible presence of Atrial Fibrillation (AF). In one example, a camera of a client device, such as a mobile phone, may acquire a series of images of a body part of a user. A plethysmographic waveform may be generated from the series of images. An autocorrelation function may be calculated from the waveform, and a number of features may be computed from the autocorrelation function. Based on an analysis of the features, a determination may be made about whether the user is experiencing AF. Such determined may be output to a display of the mobile phone for user review. | 12-17-2015 |
| 20150359447 | ELECTRONIC DEVICE, METHOD, AND COMPUTER PROGRAM PRODUCT - According to an embodiment, for example, an electronic device wearable on a body, the electronic device including: a first sensor to emit light to a body and to output a signal corresponding to a received amount of light that has passed through a body or has been reflected by a body; and a circuitry to determine whether the electronic device is on the body, by using amplitude and frequency information corresponding to a pulse in the signal output from the first sensor. | 12-17-2015 |
| 20150366473 | PULSE WAVE PROPAGATION TIME MEASUREMENT DEVICE - A pulse wave propagation time measurement device including a first signal processor section that filters an electrocardiographic signal detected by an electrocardiographic sensor, a second signal processor section that filters a photoelectric pulse wave signal detected by a photoelectric pulse wave sensor, peak detectors respectively that detect peaks of the electrocardiographic signal and the photoelectric pulse wave signal, delay time obtaining sections respectively that obtain a delay time of the electrocardiographic signal and of the photoelectric pulse wave signal, peak correctors respectively that correct the peaks of the electrocardiographic signal and the photoelectric pulse wave signal based on the delay time of the electrocardiographic signal and the photoelectric pulse wave signal, and a pulse wave propagation time measurement section that obtains a pulse wave propagation time from a time difference between the corrected peaks of the electrocardiographic signal and the photoelectric pulse wave signal. | 12-24-2015 |
| 20150366513 | PULSE WAVE SENSOR - A pulse wave sensor includes: an optical sensor unit configured to irradiate a living body with light emitted from a light emitting unit and detect light reflected from or transmitted through the living body with a light receiving unit to generate a current signal in accordance with a light reception intensity; a pulse driving unit configured to turn on or turn off the light emitting unit at a predetermined frame frequency and a predetermined duty rate; a current-voltage conversion circuit configured to convert the current signal into a voltage signal; and a detection circuit configured to extract an upper envelope and a lower envelope of the voltage signal and obtain a difference therebetween to generate a detection signal. | 12-24-2015 |
| 20150374245 | MONITORING ARTERIAL BLOOD FLOW - A device for monitoring arterial blood flow includes: a carrier substrate positioned on or affixed to a user's body; an array of light emitting elements on the carrier substrate, in which each light emitting element is arranged to emit light into the user when the carrier is positioned on the user's body; an array of light detecting elements on the carrier substrate, in which each light detecting element is arranged to detect light generated by one or more of the light emitting elements after the light has reflected from an object within the user's body; and an electronic controller to discretely activate one or more of the light emitting elements while simultaneously deactivating one or more other light emitting elements in the array, receive a signal generated by at least one light detecting element, and determine, based on the received signal, a condition of the user's body. | 12-31-2015 |
| 20150374246 | Blood velocity measurement using correlative spectrally encoded flow cytometry - A spectrally encoded flow cytometry (SEFC) technique for imaging blood in the microcirculation. Since the dependency of one of the axes of the image on time prevents effective quantification of essential clinical parameters, the optical path in an SEFC system is split into two parallel imaging lines, followed by data analysis for recovering the flow speed from the multiplexed data. The data analysis may be auto-correlation of a pair of images obtained from a sequence of images of the imaged blood vessel. | 12-31-2015 |
| 20160000334 | NON-TOUCH OPTICAL DETECTION OF BIOLOGICAL VITAL SIGNS - A microprocessor is programmed to execute a spatial bandpass filter that is operable to apply spatial bandpass filtering to a plurality of images, a regional facial clusterial module that is operably coupled to the spatial bandpass filter and that applies spatial clustering to output of the spatial bandpass filter, a temporal bandpass filter that is operably coupled to the regional facial clusterial module and that is applied to output of the regional facial clusterial module, a temporal-variation identifier that is operably coupled to the temporal bandpass filter and that identifies a temporal variation of the output of the temporal bandpass filter and a vital-sign generator that is operably coupled to the temporal-variation identifier that generates a biological vital sign from the temporal variation. | 01-07-2016 |
| 20160000339 | APPARATUS FOR DETECTING INFORMATION OF LIVING BODY - A biometric information detecting apparatus is provided. The biometric information detecting apparatus includes a fixing unit disposed on a lower structure, and a pressure pulse wave measuring unit that is supported by the fixing unit and separate from the lower structure. An optical pulse wave measuring unit is disposed on the pressure pulse wave measuring unit. The optical pulse wave measuring unit may contact a surface of a subject's body. A pressure pulse wave of the subject's body may be measured by the pressure pulse wave measuring unit and an optical pulse wave of the subject's body may be measured by the optical pulse wave measuring unit, at the same time. | 01-07-2016 |
| 20160000379 | METHOD AND APPARATUS FOR DYNAMIC ASSESSMENT AND PROGNOSIS OF THE RISKS OF DEVELOPING PATHOLOGICAL STATES - A method and apparatus for health risk assessment by means of measuring and evaluating the functional state of the mechanisms of physiological adaptation of human organism comprises recording analog signals of heartbeat intervals, filtering the analog signals of heartbeat intervals, converting the analog signals to digital signals of heartbeat intervals, transmitting the digital signals of heartbeat intervals to a central processing unit, detecting R-peaks from the digital signals of heartbeat intervals, measuring time intervals between two consecutive said R-peaks, calculating heartbeat variability parameters from said heartbeat intervals, calculating degree of tension (DT) of regulatory mechanisms and their functional reserve (FR) based on said heartbeat variability parameters, calculating plurality of functional states based on the DT and FR, and calculating posteriori probabilities based on plurality of functional states, wherein probabilities of health risk is determined based on values of DT, FR, at least one functional state and the posteriori probabilities. | 01-07-2016 |
| 20160007868 | BIOLOGICAL INFORMATION PROCESSING SYSTEM AND METHOD OF CONTROLLING BIOLOGICAL INFORMATION PROCESSING SYSTEM | 01-14-2016 |
| 20160007907 | DIAGNOSTIC METHODS AND DEVICE | 01-14-2016 |
| 20160018257 | Context Discrimination Using Ambient Light Signal - A system is configured to discriminate amongst different environments based in part on characteristics of ambient light. Ambient light intensity is measured using a light-sensitive element configured to generate an output signal indicative of an intensity of light incident on the light-sensitive element. A controller is configured to obtain a set of ambient light measurements using the light-sensitive element, and determine that the measurements correspond to a particular ambient light profile. The particular ambient light profile can be one of multiple ambient light profiles that each correspond to a different environment and/or context. | 01-21-2016 |
| 20160022160 | OPTICAL HEART RATE SENSOR - Techniques, systems and apparatus are described for implementing a heart rate sensor based on optical measurements of color response of human blood. An optical heart rate sensor can include light source circuitry including a first light emitting diode (LED) to output a first source light signal to a target measurement site, a second LED to output a second source light signal to the target measurement site, a first current pulse driver communicatively coupled to the first LED to modulate the first source light signal output from the first LED at a first predetermined frequency and a second current pulse driver communicatively coupled to the second LED to modulate the second source light signal output from the second LED at a second predetermined frequency different from the first predetermined frequency. The optical heart rate sensor can include detector circuitry including a light detecting photodiode connected to a bias voltage. | 01-28-2016 |
| 20160022220 | SENSOR SYSTEM FOR HEART RATE MEASUREMENT PER AXIS OF SHARED ORIENTATION - Technology is described for a wearable sensor system including an accelerometer and a PPG optical sensor having light processing elements including at least one photodetector in at least one linear configuration sharing an axis of orientation with the accelerometer. Heart rate measurements determined from reflected light detected by a photodetector of the light processing elements in a linear configuration are co-sampled with accelerometer measurements for one of its axes sharing its orientation with the linear configuration, thus providing per axis measurements which provide more precise data points for more easily compensating for motion artifacts in heart rate data. A wrist wearable biometric monitoring device is also described which embodies the wearable sensor system and performs active motion artifact compensation. | 01-28-2016 |
| 20160029967 | WEARABLE PHYSIOLOGICAL MEASUREMENT DEVICE AND SIGNAL COMPARISON METHOD THEREOF - A wearable physiological measurement device worn on an arm of a body, includes an electronic module, at least one strap body electrically connected with the electronic module, a first sensing module electrically connected with the processor module, and a second sensing module electrically connected with the processor module. An inside of the electronic module is equipped with a processor module. An inner surface of the strap body is flush with an inner surface of the electronic module. The first sensing module is fastened to the electronic module and is exposed to the inner surface of the electronic module to be close to a skin surface of an outer side of the arm. The second sensing module is fastened to the strap body and is exposed to an inner surface of the strap body to be closed to a skin surface of an inner side of the arm. | 02-04-2016 |
| 20160038045 | MOTION ARTIFACT REMOVAL BY TIME DOMAIN PROJECTION - An algorithm for removing motion artifacts from the PPG signal in the time domain to determine heart rate is disclosed. A device for determining a heart rate of a user can include a heart rate sensor configured to generate heart rate signals when positioned on or adjacent to a user's skin, an accelerometer configured to generate one or more acceleration signals, and processing circuitry configured to remove, in a time domain, motion artifacts from the heart rate signals based on the acceleration signals. In some examples, the removal of motion artifacts can also be based on mean-centered, variance-scaled integrated acceleration signals. In some examples, the processing circuitry can be configured to remove motion artifacts using a least squares algorithm to identify a best representation of acceleration and integrated acceleration signals in the heart rate signals. | 02-11-2016 |
| 20160038096 | METHOD AND APPARATUS FOR PROCESSING SIGNAL - A signal processing method and apparatus for measuring heartbeat and oxygen saturation. The signal processing apparatus may acquire a first sampled signal by sampling a detection signal output from an optical detector in an interval in which a light source is activated, may acquire a second sampled signal by sampling a detection signal output from the optical detector in an interval in which the light source is inactivated, and may output a combined signal in which the first sampled signal and the second sampled signal are combined. An amplitude of the first sampled signal may decrease by combining the first sampled signal with the second sampled signal. | 02-11-2016 |
| 20160051157 | FREQUENCY DOMAIN PROJECTION ALGORITHM - An algorithm for determining heart rate by removing motion artifacts from a PPG signal in the frequency domain utilizes a principal component analysis. Some examples of the present disclosure process PPG signals in combination with accelerometer signals to remove unwanted artifacts in the frequency domain. For example, principal components of the accelerometer signal can be generated and combined with the PPG signal to filter out acceleration contributions represented in the PPG signal to reveal heart rate peaks. Additionally, in some examples, templates may be stored for correlation with candidate heart rate peaks to select those peaks with the highest correlations with the stored templates. | 02-25-2016 |
| 20160051158 | HARMONIC TEMPLATE CLASSIFIER - An algorithm for removing motion artifacts from a PPG signal in the frequency domain and a harmonic template classifier (HTC) algorithm and unit to determine heart rate are disclosed. In some examples, PPG signals can be processed in combination with accelerometer signals to remove unwanted artifacts in the frequency domain. For example, an acceleration mask can be generated and used to filter out acceleration contributions represented in the PPG signal. Additionally or alternatively, in some examples, an HTC unit can be configured to generate a heart rate correlation curve based on the correlation between frequency domain PPG signals and spectral templates. In some examples, the HTC unit can be configured to implement an algorithm to determine a predicted heart rate and an associated confidence measure. In some examples, heuristics can be used to determine a predicted heart rate based on the correlation curve and/or the confidence measure. | 02-25-2016 |
| 20160058308 | Pulse Photoplethysmogram System for Diabetes Assessment - The present invention provides a method for assessing diabetes in an individual by characterization of a pulse waveform indicative of the response of a portion of the cardiovascular system of the individual to pressure pulses produced during the cardiac cycle, where “assessing diabetes” comprises determining the presence or likelihood of diabetes; the degree of progression of diabetes; a change in the presence, likelihood, or progression of diabetes; a probability of having, not having, developing, or not developing diabetes; the presence, absence, progression, or likelihood of complications from diabetes; or a combination thereof. Embodiments of the present invention comprise determining a measure of arterial compliance of the individual from the pulse waveform; and assessing diabetes based on the measure of arterial compliance. | 03-03-2016 |
| 20160058309 | REFLECTIVE SURFACES FOR PPG SIGNAL DETECTION - Reflective surfaces for the apertures of PPG optical components in PPG systems is disclosed. In a PPG system or device, the addition of reflective surfaces around, under, or near the apertures of the optical components can enhance the amount of light received by the light detector. As a result, the measured PPG signal strength can be higher and more accurate compared to the same PPG device without reflective surfaces. The reflective surfaces can reflect and/or recycle light that is incident upon the reflective surfaces back into the skin for eventual capture of the light by the light detectors. In some examples, the reflective surfaces can be diffuse or specular reflectors and/or can be configured to selectively reflect one or more wavelengths of light. In some examples, the back crystal and/or component mounting plane of the PPG system can be made of the same material as the reflective surfaces. | 03-03-2016 |
| 20160058311 | BIOLOGICAL INFORMATION DETECTING DEVICE - A biological information detecting device includes a sensor detecting biological information of a subject, and a case housing the sensor, the case includes a light transmitting section formed of a resin material, the light transmitting section including a detection window through which light incident on the sensor is transmitted, and a light shielding section formed of a glass-containing resin material, the light shielding section disposed in the vicinity of the light transmitting section, wherein the light transmitting section and the light shielding section are integrally formed. | 03-03-2016 |
| 20160058367 | CONTEXT-AWARE HEART RATE ESTIMATION - A device can estimate the heart rate of an active user by using a physiological model to refine a “direct” measurement of the user's heart rate obtained using a pulse sensor. The physiological model can be based on heart rate response to activity and can be informed by context information, such as the user's current activity and/or intensity level as well as user-specific parameters such as age, gender, general fitness level, previous heart rate measurements, etc. The physiological model can be used to predict a heart rate, and the prediction can be used to assess or improve the direct measurement. | 03-03-2016 |
| 20160058378 | SYSTEM AND METHOD FOR PROVIDING AN INTERPRETED RECOVERY SCORE - A system for providing an interpreted recovery score includes an apparatus for providing an interpreted recovery score. The apparatus includes a fatigue level module that detects a fatigue level. In addition, the apparatus includes a dynamic recovery profile module that creates and updates a dynamic recovery profile based on an archive. The archive includes historical information about the fatigue level. The apparatus also includes an interpreted recovery score module that creates and updates an interpreted recovery score based on the fatigue level and the dynamic recovery profile. | 03-03-2016 |
| 20160066842 | WRIST-WORN APPARATUS FOR OPTICAL HEART RATE MEASUREMENT - A wrist-worn apparatus for measuring a user's heart activity includes an optical heart activity sensor configured to measure the user's heart activity by optical heart rate measurement; and a wrist strap adapted to physically couple the optical heart rate activity sensor against the user's skin by attaching the wrist-worn apparatus around the user's wrist. A first curved connection member is adapted to slide inside a second curved connection member, and the wrist strap includes at least one groove and a fixing claw acting as a counterpart for the at least one groove. The fixing claw is arranged to engage the at least one groove when the first connection member is slid inside the second connection member. | 03-10-2016 |
| 20160073909 | SURGICAL INSTRUMENTS WITH SENSORS FOR DETECTING TISSUE PROPERTIES, AND SYSTEM USING SUCH INSTRUMENTS - A system is provided that furnishes expert procedural guidance based upon patient-specific data gained from surgical instruments incorporating sensors on the instrument's working surface, one or more reference sensors placed about the patient, sensors implanted before, during or after the procedure, the patient's personal medical history, and patient status monitoring equipment. Embodiments include a system having a surgical instrument with a sensor for generating a signal indicative of a property of a subject tissue of the patient, which signal is converted into a current dataset and stored. A processor compares the current dataset with other previously stored datasets, and uses the comparison to assess a physical condition of the subject tissue and/or to guide a procedure being performed on the tissue. | 03-17-2016 |
| 20160073911 | APPARATUS AND METHOD FOR DETERMINING THE SPEED OF PROPAGATION OF A PULSE WAVE - An apparatus and method are provided for determining the speed of propagation of a pulse wave. The apparatus includes at least one pulse wave sensor positionable on a finger and a toe of a subject and a processing and calculation unit configured to determine the time that the pulse wave reaches the finger and the time that the pulse wave reaches the toe of the subject. The unit calculates a time value, designated “aortic transit time”, as a function of the difference between the times that the pulse wave reaches the toe or the finger of the subject, and calculates a speed, designated “aortic pulse wave velocity”, as a function of the aortic transit time. The calculation includes division of a value, designated “aortic length”, as a function of the height and age of the subject, by the aortic transit time. | 03-17-2016 |
| 20160081626 | BIOSENSOR - There is provided a biosensor capable of improving the S/N ratio of a final photoplethysmographic signal regardless of the change in a noise component such as extraneous light. | 03-24-2016 |
| 20160089041 | REMOTE HEART RATE MONITORING BASED ON IMAGING FOR MOVING SUBJECTS - Systems and methods are disclosed to measure a PPG signal. In some embodiments, a method may include capturing a plurality of frames of a subject; tracking the position of a region of interest of the subject in each of the plurality of frames; creating a first time series signal, a second time series signal, and third time series signal corresponding with respective color channels of the plurality of frames; normalizing the first, second, and third time series signals, combining the normalized first time series signal, the normalized first time series signal, and the normalized first time series signal into a combined signal; creating a spectral signal from the combined signal; and extracting the PPG signal from the spectral signal. | 03-31-2016 |
| 20160089062 | METHOD AND A MOBILE APP FOR USE WITH A MOBILE DEVICE TO ACCURATELY QUANTIFY BLOOD HEMOGLOBIN IN MAMMALS - A method and a mobile app are disclosed for obtaining hemoglobin count in the blood of a mammal using digital images of the conjunctiva of the eye of the mammal taken with a camera of a mobile device running the mobile app. The mobile app carries out a method including: obtaining a color image of the conjunctiva of the eye using the digital camera; computing an R/B ratio and a Y/I ratio of the color image; normalizing the R/B ratio and the Y/I ratio using color image normalization parameters obtained using a master camera so as to provide a R/B true ratio and a Y/I true ratio; and using the R/B true ratio and the Y/I true ratio as inputs to respective look-up tables created using the master camera so as to provide an accurate measure of blood hemoglobin count. | 03-31-2016 |
| 20160089086 | HEART RATE DETECTION MODULE, AND DETECTION AND DENOISING METHOD THEREOF - A heart rate detection module including a PPG measuring device, a motion sensor and a processing unit is provided. The PPG measuring device is configured to detect a skin surface in a detection period to output a PPG signal. The motion sensor is configured to output an acceleration signal corresponding to the detection period. The processing unit is configured to respectively convert the PPG signal and the acceleration signal to first frequency domain information and second frequency domain information, determine a denoising parameter according to a maximum spectrum peak value of the second frequency domain information to denoise the first frequency domain information, and calculate a heart rate according to a maximum spectrum peak value of the denoised first frequency domain information. | 03-31-2016 |
| 20160095524 | Non-Contact Assessment of Cardiovascular Function using a Multi-Camera Array - A system and method are provided for non-contact cardiac assessment of a subject. Images of the subject are captured from at least two synchronized independent imaging devices spaced equidistant from the subject and positioned such that each imaging device captures an image of the subject different from other imaging devices. Spectral components of the captured images are extracted. The extracted spectral components are analyzed. A signal corresponding to cardiac information is identified in the extracted spectral components. The identified signal corresponding to the cardiac information is extracted from the extracted spectral components. | 04-07-2016 |
| 20160106322 | SYSTEM AND METHOD FOR DETERMINING STROKE VOLUME OF A PATIENT - A PPG system for determining a stroke volume of a patient includes a PPG sensor configured to be secured to an anatomical portion of the patient. The PPG sensor is configured to sense a physiological characteristic of the patient. The PPG system may include a monitor operatively connected to the PPG sensor. The monitor receives a PPG signal from the PPG sensor. The monitor includes a pulse trending module determining a slope transit time of an upslope of a primary peak of the PPG signal. The pulse trending module determines a stroke volume of the patient as a function of the slope transit time. | 04-21-2016 |
| 20160106329 | UTILIZING DIFFERENT COLOR CHANNELS FOR RGB-IMAGE-BASED DIFFERENTIAL HEART RATE DETECTION - Aspects described herein include a computer-implemented method for detecting heart rate signals. The method includes a step of capturing a first image and a second image of a region of interest. The second image is aligned with the first image in a first spectrum that is insensitive to a characteristic to obtain a correction. Then, a correction based upon the above-mentioned alignment is applied to the second image in a second spectrum that is sensitive to the characteristic. Additional aspects described an image capturing device and a computer-implemented method for updating a user-interactive activity. | 04-21-2016 |
| 20160113504 | MULTIMODAL LASER SPECKLE IMAGING - A system for multimodal laser speckle imaging may include a first light source positioned to emit laser light toward a target, a second light source positioned to emit light toward the target, a camera positioned to receive light scattered from the target, and a processor. The processor may be programmed to receive from the at least one camera at least one image of the target as illuminated by the laser, obtain a laser speckle contrast image of the target from the at least one image of the target as illuminated by the laser, receive from the at least one camera at least one image of the target as illuminated by the second light source, divide the laser speckle contrast image into subparts, and divide the at least one image of the target as illuminated by the second light source into identical subparts, determine whether each subpart includes a feature of a certain type by combining each subpart of the laser speckle contrast image with the at least one image of the target as illuminated by the second light source and comparing the combination with one or more criteria, and out-putting the location and type of features detected in a subpart of the images. | 04-28-2016 |
| 20160113585 | Pulse Wave Sensor and Semiconductor Module - A pulse wave sensor includes: a white LED emitting white light to a human body; a G sensor converting, into a first electrical signal, green light included in light emitted from the white LED and reflected within the human body; an R sensor converting, into a second electrical signal, red light included in the light emitted from the white LED and reflected within the human body; and an arithmetic control unit configured to generate a signal showing a heart rate based on a level difference between the first electrical signal and the second electrical signal. Therefore, a distance between the G sensor and the R sensor does not have to be increased, so that an apparatus can be reduced in size. | 04-28-2016 |
| 20160120422 | HOST OF PHYSIOLOGICAL DETECTION SYSTEM AND PHYSIOLOGICAL DETECTION DEVICE WITH HIGH ACCURACY - There is provided a physiological detection system including a physiological detection device and a host. The physiological detection device is configured to transmit a physiological data series to the host according to a local oscillation frequency. The host is configured to calculate a physiological value according to the physiological data series and determine a correction parameter according to a receiving data parameter and a reference data parameter, wherein the correction parameter is configured to correct the physiological value, process the physiological data series or adjust the local oscillation frequency of the physiological detection device. | 05-05-2016 |
| 20160120463 | VESSEL SENSING DEVICE WITH AUTOMATIC AMENDMENT FUNCTION - A vessel sensing device with automatic amendment function includes an analog processing circuit, a signal generating circuit and a DC voltage detecting circuit. The analog processing circuit includes an optical sensing module. An optical sensor of the optical sensing module generates an analog signal with a skin characteristic signal and a vessel characteristic signal according to an optical reflecting signal. The skin characteristic signal and the vessel characteristic signal respectively correspond to a skin feature and a vessel feature of the user. The signal generating circuit is coupled to the analog processing circuit to transform the analog signal into a compensation signal. The DC voltage detecting circuit is coupled to the signal generating circuit and adapted to compensate the analog processing circuit according to the compensation signal, so as to decrease the skin characteristic signal within the analog signal. | 05-05-2016 |
| 20160120469 | MEASURING MYOCARDIAL PHYSIOLOGIC PARAMETERS - A method for measuring a myocardial physiologic parameter according to an embodiment includes placing an at least partially convex portion of a spectral sensor against an intercostal space of a human over a heart of the human and measuring the physiologic parameter of a myocardium of the heart with the spectral sensor over time during an emergency medical event. The spectral sensor may be configured to determine and visually display a suggested position adjustment for directing the spectral radiation more directly toward the tissue of interest (e.g. the myocardium), and/or for placing the operative elements of the spectral sensor closer to the tissue of interest (e.g. the myocardium). | 05-05-2016 |
| 20160120476 | MOTION COMPENSATION FOR OPTICAL HEART RATE SENSORS - A method of optical heart rate sensing includes receiving a motion frequency from a motion sensor and receiving an optical signal from an optical sensor. The motion frequency is then filtered from the optical signal, and an estimated heart rate frequency is determined based on the filtered optical signal. A heart rate is reported that is based on the motion frequency, but not based on the estimated heart rate frequency, when a local neighbor magnitude ratio of the estimated heart rate frequency is below a confidence threshold. | 05-05-2016 |
| 20160120482 | DEVICE, SYSTEM AND METHOD FOR EXTRACTING PHYSIOLOGICAL INFORMATION - The present invention relates to a device, system and a method for extracting physiological information indicative of at least one vital sign of a subject from detected electromagnetic radiation reflected from the subject. The device comprises an input interface for receiving a data stream of detection data derived from detected electromagnetic radiation reflected from a skin region of a subject, wherein the detected electromagnetic radiation is detected by a polarized radiation detector, while the polarization angle of the polarized radiation detector is changed, a PPG extraction unit for extracting a photoplethysmographic, PPG, signal from said detection data, a signal quality determination unit for determining quality metrics from said PPG signal for different settings of the polarization angle of the polarized radiation detector, a selection unit for selecting the optimum quality metric value from the determined quality metrics and for generating polarization control information for use by said polarized radiation detector for setting the polarization angle to an angle value, at which said optimum quality metric value was obtained, for subsequent detection of radiation, and a processor for deriving physiological information indicative of at least one vital sign from the PPG signal. | 05-05-2016 |
| 20160128586 | SYSTEM, METHOD, AND ARTICLE FOR HEART RATE VARIABILITY MONITORING - What is provided is a system, method, and article of manufacture for detecting, monitoring, and tracking whether a user is in a more relaxed or stressed state by measuring the user's heart rate variability. The system has a heart rate monitoring device with at least one sensor that is configured to measure user heart rate. The system also has a mobile computing device, which may be configured to interact with the heart rate monitoring device for monitoring, tracking, and displaying a user's heart rate and mental stress level information. The method measures the user's heart rate information to calculate a measure of heart rate variability and to analyze whether peaks corresponding to activation levels of the user's parasympathetic nervous system (PNS) and sympathetic nervous system (SNS) exceed a predetermined threshold level within a predetermined time period. | 05-12-2016 |
| 20160135696 | Athletic Band with Removable Module - Methods of detecting and reducing error of athletic sensor readouts are disclosed. Methods relate to receiving properties, such as an athlete's body mass index and a physiological property, such as heart rate. Based on a body mass index or other parameter being outside a range, selecting a protocol, such as a heart rate measurement protocol. In further embodiments, a heart rate measurement protocol may be augmented. | 05-19-2016 |
| 20160135697 | PORTABLE ELECTRONIC HEMODYNAMIC SENSOR SYSTEMS - Systems and methods are provided for extracting hemodynamic information, optionally employing portable electronic devices with optional User Interface (UI) features for system implementation. The systems and methods may be employed for acquiring hemodynamic signals and associated electrophysiological data and/or analyzing the former or both in combination to yield useful physiological indicia or results. Such hardware and software is advantageously used for non-invasively monitoring cardiac health. | 05-19-2016 |
| 20160135698 | ULTRA-LOW POWER CONTINUOUS HEART RATE SENSING IN WEARABLE DEVICES - Systems and methods may provide for a piezoelectric film that generates an excitation signal in response to pressure variations on a surface of the piezoelectric film and an analog front end coupled to the piezoelectric film, wherein the analog front end generates a first measurement signal based on the excitation signal. Additionally, a heart rate monitor may be coupled to the analog front end, wherein the heart rate monitor generates a heart rate measurement based on the first measurement signal. In one example, the analog front end includes a single stage amplifier. | 05-19-2016 |
| 20160135743 | Athletic Band with Removable Module - A performance monitoring system includes an athletic band or other article of apparel worn by a user, with a pocket supported by the article and defining a cavity, where the pocket has a sensor opening extending through an inner wall of the pocket and an access opening providing access to the cavity. The system also includes an electronic module received in the cavity such that the module can be inserted and removed from the cavity through the access opening. The module has a projection on an underside of the electronic module and a sensor mounted on the projection, where the projection extends through the sensor opening when the electronic module is received in the cavity and is configured to place the sensor in close proximity to skin of the user, such that the sensor is configured to sense a physiological parameter of the user. | 05-19-2016 |
| 20160143544 | System for Calculating Biological Information Under Exercise Load, Biological Information Calculation Method, and Portable Information Terminal - A system for calculating biological information under exercise load, including a sensor device for measuring a motion of a user, a portable heart rate sensor for measuring a heart rate of a user, and a server including a biological information calculation function, wherein the system measures a motion of a user under exercise load on the user, measures the heart rate of the user after the stop of the exercise load, measures a temporal difference between the stop of the exercise load and measurement of the heart rate, estimates a drop in the heart rate based on the temporal difference and finds an estimated heart rate immediately before the stop of exercise of the user, and calculates biological information of the user under the exercise load based on the motion of the user under the exercise load and the estimated heart rate. | 05-26-2016 |
| 20160143547 | RAPID RATE-ESTIMATION FOR CELL PHONES, SMART WATCHES, OCCUPANCY, AND WEARABLES - Techniques for respiratory and metabolic monitoring in mobile devices, wearable computing, security, illumination, photography, and other applications may use a phosphor-coated broadband white LED to produce broadband light, which may be transmitted along with ambient light to a target (e.g., ear, face, wrist, or the like). Some scattered light returning from a target may be passed through a spectral filter to produce multiple detector regions sensitive to a different waveband and/or wavelength range, and the detected light may be analyzed to determine a measure of a respiratory rate or effort. In the absence of LED light, ambient light may be sufficient illumination for analysis. The disclosed techniques may provide identifying features of type or status of a tissue target (e.g., respiratory rate, heart rate, heart rate variability, heart function, lung function, fat content, hydration status, confirmation of living tissue, and the like). | 05-26-2016 |
| 20160143548 | VARIABLE MODE PULSE INDICATOR - A user configurable variable mode pulse indicator provides a user the ability to influence outputs indicative of a pulse occurrence at least during distortion, or high-noise events. For example, when configured to provide or trigger pulse indication outputs, a pulse indicator designates the occurrence of each pulse in a pulse oximeter-derived photo-plethysmograph waveform, through waveform analysis or some statistical measure of the pulse rate, such as an averaged pulse rate. When the configured to block outputs or not trigger pulse indication outputs, a pulse indicator disables the output for one or more of an audio or visual pulse occurrence indication. The outputs can be used to initiate an audible tone “beep” or a visual pulse indication on a display, such as a vertical spike on a horizontal trace or a corresponding indication on a bar display. The amplitude output is used to indicate data integrity and corresponding confidence in the computed values of saturation and pulse rate. The amplitude output can vary a characteristic of the pulse indicator, such as beep volume or frequency or the height of the visual display spike. | 05-26-2016 |
| 20160143549 | BIOLOGICAL SENSOR - A biological sensor capable of improving the signal to noise ratio of a detection signal obtained by a light-receiving element and amplified by an amplifier is provided. | 05-26-2016 |
| 20160150981 | MONITORING SYSTEMS | 06-02-2016 |
| 20160150985 | APPARATUS AND METHOD FOR MEASURING PULSE WAVE | 06-02-2016 |
| 20160157718 | CHOOSING A HEART RATE MONITOR FOR A WEARABLE MONITORING DEVICE - Methods, apparatuses, and computer readable mediums for choosing a heart rate monitor for a wearable monitoring device. In a particular embodiment, the wearable monitoring device identifies a location of a wearable monitoring device on a user; selects based on an identification of the location, a heart rate monitor from the plurality of heart rate monitors; and uses the selected heart rate monitor to monitor a heart rate of the user. | 06-09-2016 |
| 20160157739 | DETERMINING RETURN OF SPONTANEOUS CIRCULATION DURING CPR - There is provided a device ( | 06-09-2016 |
| 20160157741 | RETAINER FOR PHOTOELECTRIC SENSOR AND PHOTOELECTRIC PULSE WAVE MEASURING APPARATUS INCLUDING THE SAME - A photoelectric sensor retainer and a photoelectric pulse wave measuring apparatus including the same are provided. The photoelectric sensor retainer includes a sensor mounting unit on which a photoelectric sensor having a light-receiving surface is attachable and detachable, the light-receiving surface facing a measuring direction. The photoelectric sensor retainer further includes a pressing unit configured to press an upper surface of the sensor mounting unit in the measuring direction to apply pressure to the sensor mounting unit, and a pedestal including a seating plate configured to support the pressing unit, the seating plate having a principal plane perpendicular to a pressing direction of the pressing unit. | 06-09-2016 |
| 20160157776 | WEARABLE DEVICE FOR STRESS ASSESSMENT AND MANAGEMENT AND METHOD OF ITS USE - Systems and methods for assessing and managing stress of a user is provided. The system includes a wearable device that can be worn by the user; the wearable device include a sensing device for generating at least one time-series signal by continuous sensing of light intensity of light signals. The time-series signal includes at least one continuous photoplethysmographic (PPG) signal having an LF and an HF component. The system also includes a stress assessment device to determine a stress level of the agent based on a processing of the PPG signal. The stress assessment device further includes a feedback device configured by the processor to provide a feedback including at least one remedial message to the agent based on the determined stress level of the agent. | 06-09-2016 |
| 20160166162 | BIOLOGICAL INFORMATION MEASUREMENT APPARATUS | 06-16-2016 |
| 20160174856 | 3D PHYSIOLOGICAL DETECTION SYSTEM AND OPERATING METHOD THEREOF | 06-23-2016 |
| 20160183813 | METHODS AND SYSTEMS FOR DETECTING PHYSIOLOGY FOR MONITORING CARDIAC HEALTH - In one aspect, a photoplethysmograph system to measure a user's heart rate includes one or more light-emitting diodes (LED) that provide a constantly-on light signal during a measurement period. The one or more light-emitting diodes are in optical contact with an epidermal surface of the user. The one or more light-emitting diodes emit a light signal into the tissue of the user, and wherein the tissue contains a pulsating blood flow. A light-intensity sensor circuit converts the reflected LED light from the tissue into a second signal that is proportional to a reflected light intensity. The second signal includes a voltage or current signal. A computer-processing module calculates the user's beat-to-beat heart rate from the second current signal. | 06-30-2016 |
| 20160183817 | Apparatus and method of measuring pulse wave - Provided is an apparatus and method of measuring a pulse wave. The method includes: causing receivers to respectively receive pulse wave signals that are detected at two points of an object, determining an effective pulse wave signal period by using the received pulse wave signals, and obtaining a pulse transit time (PTT) between the two points by using a result obtained after comparing a magnitude of an output signal of each of the receivers with a value that is less by a predetermined percentage than a peak value of an output signal of each of the receivers during the determined effective pulse wave signal period. | 06-30-2016 |
| 20160183818 | HEART RATE DATA COLLECTION - One innovative aspect is directed to heartrate data collection. In some implementations, a circuit includes a light detector for generating a detected signal based on received light. The circuit includes a switching circuit configured to receive a first signal based on the detected signal and to switch among a first and a second configuration. In some implementations, the circuit includes a first and a second sampling circuit for sampling a value of the first signal when the switching circuit is in the first configuration and second configurations, respectively. In some implementations, the circuit includes an ambient light cancellation circuit for countering a first component of the first signal while the first switching circuit is in the first configuration. In some implementations, the circuit includes an adjustable gain circuit for adjusting a gain of the first signal while the first switching circuit is in the first configuration. | 06-30-2016 |
| 20160183884 | BIOSIGNAL PROCESSING METHOD AND APPARATUS - A biosignal processing apparatus and method thereof include a signal receiver and a signal processor. The signal receiver is configured to receive a biosignal having a corresponding electrical physical quantity from a sensor. The signal processor includes a voltage inputter and a current inputter, and configured to process the biosignal using one of the voltage inputter and the current inputter and based on the corresponding electrical physical quantity of the biosignal. | 06-30-2016 |
| 20160198964 | VITAL SIGNS MEASUREMENT SYSTEM, DETECTING METHOD OF THE VITAL SIGNS MEASUREMENT SYSTEM, AND VITAL SIGNS MEASUREMENT EARPHONE | 07-14-2016 |
| 20160198966 | BIOLOGICAL INFORMATION MEASURING MODULE, BIOLOGICAL INFORMATION MEASURING APPARATUS, LIGHT DETECTING APPARATUS, LIGHT DETECTING MODULE, AND ELECTRONIC APPARATUS | 07-14-2016 |
| 20160199001 | HEART RATE DETECTION EARPHONE | 07-14-2016 |
| 20160199005 | BIOLOGICAL INFORMATION MEASUREMENT APPARATUS | 07-14-2016 |
| 20160199006 | BIOLOGICAL INFORMATION MEASUREMENT APPARATUS | 07-14-2016 |
| 20160249820 | ESTIMATING HEART RATE BY TRACKING OPTICAL SIGNAL FREQUENCY COMPONENTS | 09-01-2016 |
| 20160374572 | ELECTRONIC APPARATUS, OPERATION MANAGEMENT METHOD, AND COMPUTER-READABLE MEDIUM - The effect of prolonged skin contact with an electronic apparatus is appropriately suppressed. An electronic apparatus | 12-29-2016 |
| 20160374573 | ELECTRONIC CIRCUIT WITH LIGHT SENSOR, VARIABLE RESISTANCE AND AMPLIFIER - Embodiments include circuits, apparatuses, and systems for optical heart rate monitor light sensor amplifiers. In embodiments, an electronic circuit may include a differential amplifier having an inverting terminal, a non-inverting terminal, and an output terminal; a first variable resistance circuit coupled with a reference voltage, the inverting terminal of the differential amplifier, and the output terminal of the differential amplifier; a second variable resistance circuit coupled with the non-inverting terminal of the differential amplifier and the reference voltage; and a light sensor to generate an electrical signal in response to light reflected by skin of a user, the light sensor coupled with the non-inverting terminal and the inverting terminal of the differential amplifier. Other embodiments may be described and claimed. | 12-29-2016 |
| 20160374574 | APPARATUS AND METHOD FOR TRACKING AND CANCELLING DC OFFSET TO ACQUIRE SMALL AC SIGNAL - Described is an apparatus which comprises: a source to generate a first current having AC and DC components; a current-to-voltage converter to convert the first current or a copy of the first current to a first voltage proportional to a resistance, the first voltage having AC and DC components that correspond to the AC and DC components of the first current; a sample-and-hold circuit to filter the AC component from the first voltage and for providing an output voltage with the DC component; and an amplifier to receive the output voltage. | 12-29-2016 |
| 20160374575 | TOUCH PANEL APPARATUS FOR MEASURING BIOSIGNALS AND METHOD OF MEASURING PULSE TRANSIT TIME USING THE SAME - A touch panel apparatus and a method are provided. The touch panel apparatus includes a touch panel, a pulse sensor, and a processor. The touch panel detects a heartbeat-based signal from a first part of a target body. The pulse sensor detects a pulse signal from a second part of the target body. The processor acquires a pulse transit time (PTT) based on the detected heartbeat-based signal and the detected pulse signal. The touch panel apparatus contemporaneously detects the heartbeat-based signal and the pulse signal using the touch panel and the pulse sensor, respectively. | 12-29-2016 |
| 20160374625 | Estimating Physiological States Based on Changes in CRI - Novel tools and techniques are provided for assessing, predicting and/or estimating a physiological state of a patient, based on variance of the patient's compensatory reserve index (“CRI”) before, during, and/or after a physical perturbation. In some embodiments, the system might receive a first set of physiological data from one or more sensors at a first time relative to a physical perturbation of the patient, and might calculate a first set of CRI values of the patient. The system might receive a second set of physiological data at a second time relative to the physical perturbation, calculate a second set of CRI values, analyze the two sets of CRI values against a pre-existing model, estimate a physiological state (e.g., hydration, etc.) of the patient, and display the estimate on a display device. The system might also control an infusion device to infuse fluids into the patient based on estimated hydration state. | 12-29-2016 |
| 20160380595 | APPARATUS AND METHOD FOR FILTER SETTLING CALIBRATION TO IMPROVE SPEED OF TRACKING AND CANCELLING OF DC OFFSET - Described is an apparatus which comprises: an amplifier to receive a reference voltage; and calibration logic which is operable to receive a first voltage and to provide the reference voltage to the amplifier, wherein the calibration logic is operable to generate a look-up table (LUT) that maps the first voltage to a drive current. | 12-29-2016 |
| 20170231469 | PROCESSOR DEVICE FOR ENDOSCOPE,OPERATION METHOD THEREOF, AND NON-TRANSITORY COMPUTER READABLE MEDIUM | 08-17-2017 |
| 20170231509 | MEASUREMENT APPARATUS AND MEASUREMENT METHOD | 08-17-2017 |
| 20170231510 | SYSTEMS AND METHODS FOR PEDAL REVASCULARIZATION ASSESSMENT | 08-17-2017 |
| 20170231544 | BIOLOGICAL INFORMATION DETECTION DEVICE INCLUDING CALCULATION CIRCUIT THAT GENERATES SIGNAL OF BIOLOGICAL INFORMATION | 08-17-2017 |
| 20170231553 | MEDICAL APPARATUS | 08-17-2017 |
| 20170231579 | BIOSIGNAL PROCESSING METHOD AND APPARATUS | 08-17-2017 |
| 20170231689 | MEDICAL APPARATUS | 08-17-2017 |
| 20180020932 | MULTI-SPECTRAL PHYSIOLOGIC VISUALIZATION (MSPV) USING LASER IMAGING METHODS AND SYSTEMS FOR BLOOD FLOW AND PERFUSION IMAGING AND QUANTIFICATION IN AN ENDOSCOPIC DESIGN | 01-25-2018 |
| 20180024343 | IMAGING DEVICE AND METHOD | 01-25-2018 |
| 20190142287 | Optical Heart Rate Sensor | 05-16-2019 |
| 20220133165 | METHOD FOR DETERMINING A PHYSIOLOGICAL PARAMETER USING A PPG SIGNAL WITH REDUCED INFLUENCE OF VENOUS PULSATILITY - A method for determining a physiological parameter, including: providing a PPG sensor device configured to measure a PPG signal; measuring a PPG signal on the user, the PPG signal containing at least two cardiac cycles; identifying PPG pulses from the PPG signal, each corresponding to a cardiac cycle and having a non-modulated component and a time-modulated component; for each PPG pulse, determining at least one venous-related feature indicative of the contribution of venous pulsatility to the time-modulated component of the PPG pulse; assigning a weighting factor to each pulse including calculating the weighting factor by using a weighting function including a mathematical operator inputted with the set of at least one venous-related feature; computing a weighted-average PPG pulse by using the PPG pulses and their respective weighting factors; and determining the physiological parameter by using the weighted-average PPG pulse. | 05-05-2022 |
