Class / Patent application number | Description | Number of patent applications / Date published |
600480000 | Pressure in blood vessel | 56 |
20080269619 | Method and Means for Measuring Systolic Blood Pressure in the Ankle - A flexible pad for measuring systolic ankle blood pressure comprises two or more pairs of light emitting diodes and photo detectors. The pairs are disposed in parallel. The detectors are adapted for detecting light emitted by the respective diode into tissue and reflected from there. The pad further comprises conductor means for providing power to the light emitting diodes from a power source and means selected from conducting means and wireless means for putting the detectors in communication with electronic equipment for detector signal analysis. Also disclosed is the combination of the pad and an inflatable cuff, and a method for measuring systolic ankle blood pressure. | 10-30-2008 |
20080319325 | Biologic Information Detecting Apparatus - In measurement requiring application of pressure to a tissue of a living body such as blood pressure measurement, noise due to vibration tends to occur. It is therefore difficult to accurately measure a pulse wave and a blood pressure value, and there is a problem of measuring blood pressure stably. It is also difficult to measure blood pressure in daily life activities or to measure blood pressure at predetermined intervals or continuously in a state where a tonometer is always attached. There is consequently a problem of providing a method of holding a biologic information detecting apparatus. The present invention has been achieved to solve the problems and an object of the invention is to provide an easy-to-wear biologic information detecting apparatus for stably detecting biologic information. | 12-25-2008 |
20090326386 | Systems and Methods for Non-Invasive Blood Pressure Monitoring - According to embodiments, systems and methods for non-invasive blood pressure monitoring are disclosed. A sensor or probe may be used to obtain a plethysmograph or photoplethysmograph (PPG) signal from a subject. From the signal, the time difference between two or more characteristic points in the signal may be computed. The time difference may correspond, for example, to the time for a pulse wave to travel a predetermined distance from the senor or probe to a reflection point and back to the sensor or probe. From this time difference, blood pressure measurements may be computed continuously or on a periodic basis. | 12-31-2009 |
20110152694 | BLOOD-PRESSURE SENSOR, MANUFACTURING METHOD THEREOF, AND BLOOD-PRESSURE SENSOR SYSTEM - A blood-pressure sensor is constituted of an elastic body which is fitted to a blood-vessel outer wall, and a shape of which is deformed by force generated by pulsing motion of expansion and contraction of the blood vessel, and a plurality of nanosized particles dispersedly provided in the elastic body, and when the force is applied to the sensor in a state where the sensor is irradiated with light, the magnitude of the force is measured on the basis of intensity of scattered light from the particles or emission intensity of fluorescence from the particles, the intensity of the scattered light or emission intensity of the fluorescence corresponding to a change in distance between the particles. | 06-23-2011 |
20120108983 | BODY-WORN SENSOR FEATURING A LOW-POWER PROCESSOR AND MULTI-SENSOR ARRAY FOR MEASURING BLOOD PRESSURE - A system is described that continuously measures a patient's blood pressure over a length of time. The system features a sensor assembly featuring a flexible cable configured to wrap around a portion of a patient's arm. The flexible cable features a back surface that includes at least two electrodes that are positioned to contact the patient's skin to generate electrical signals. It additionally features an optical sensor that includes at least one light source and at least one photodetector. These components form an optical sensor that is configured to generate an optical signal by detecting optical radiation emitted by the at least one light source and reflected from a blood vessel underneath the patient's skin. | 05-03-2012 |
20120143066 | Remote Blood Pressure Waveform Sensing Method - The invention as disclosed is a non-contact method and apparatus for continuously monitoring a physiological event in a human or animal, such as blood pressure, which involves utilizing a laser-based interferometer system in combination with a laser tracking system and a signal processor to produce a waveform that is representative of a continuous physiological event such as blood pressure or respiration in a subject. | 06-07-2012 |
20120283578 | 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 |
20120289839 | VESSEL PULSE WAVE MEASUREMENT SYSTEM CONDUCTING VESSEL PULSE WAVE MEASUREMENT BY OBTAINING PULSATION WAVEFORM OF BLOOD VESSEL - A vessel pulse wave measurement system performs vessel pulse wave measurement using an optical probe circuit provided with an optical probe including a light emitting element and a light receiving element, a drive circuit, and a detection circuit. A measurement device directly and synchronously feeds back an electrical signal from the optical probe to the drive circuit as a drive signal to generate a self-oscillation signal from the detection circuit, and measures the self-oscillation signal as a vessel pulse wave signal. A controller controls an operating point of at least one of the detection circuit and the drive circuit such that the self-oscillation signal substantially reaches a maximum level thereof. | 11-15-2012 |
20130190630 | OPTICAL VITAL SIGN DETECTION METHOD AND MEASUREMENT DEVICE - A vital sign measurement device includes an optical sensing system and an output unit. The optical sensing system includes an optical source, an optical refractor, and an optical detector. The optical sensing system is placed against the anatomical location of the subject to sense movement corresponding to an arterial pulse. The optical sensing system can sense an arterial pulse from the movement, bending, or compression of at least one portion of the optical sensing system relative to other portions of the optical sensing system resulting in a change in an optical signal received by the optical detector. The output unit generates a measure of a vital sign. | 07-25-2013 |
20130218029 | SYSTEM AND METHOD FOR ASSESSING RENAL ARTERY NERVE DENSITY - A system and method is described to map the renal artery prior to an ablation in order to a-priori identify the location of the sympathetic nerves. In specific embodiments, the nerve modulating energy may be electrical or optical. | 08-22-2013 |
20130296717 | VESSEL PULSE WAVE MEASUREMENT SYSTEM CONDUCTING VESSEL PULSE WAVE MEASUREMENT BY OBTAINING PULSATION WAVEFORM OF BLOOD VESSEL - A vessel pulse wave measurement system performs vessel pulse wave measurement using an optical probe circuit provided with an optical probe including a light emitting element and a light receiving element, a drive circuit, and a detection circuit. A measurement device directly and synchronously feeds back an electrical signal from the optical probe to the drive circuit as a drive signal to generate a self-oscillation signal from the detection circuit, and measures the self-oscillation signal as a vessel pulse wave signal. A controller controls an operating point of at least one of the detection circuit and the drive circuit such that the self-oscillation signal substantially reaches a maximum level thereof. | 11-07-2013 |
20130324860 | Optical Power Modulation Vital Sign Detection Method and Measurement Device - A vital sign measurement device includes a sensor fixation device, a sensor frame, an optical sensing system, and an output unit. The sensor fixation device is adapted to be placed against an anatomical location of a subject. The optical sensing system includes an optical waveguide, an optical source device to supply optical energy to the optical waveguide, and an optical detector to detect an amount of optical energy exiting the optical waveguide. The optical sensing system is adapted to sense an arterial pulse from the compression or flexing of at least a portion of the optical waveguide resulting in reduction of the amount of light exiting the optical waveguide. The output unit is configured to receive a signal indicative of the amount of light exiting the optical waveguide and to generate a measure of the vital sign based at least in part on the received signal. | 12-05-2013 |
20140005558 | PRESSURE SENSING GUIDEWIRE | 01-02-2014 |
20140012142 | SYSTEM AND METHOD FOR DETERMINING VIDEO-BASED PULSE TRANSIT TIME WITH TIME-SERIES SIGNALS - What is disclosed is a system and method for determining a subject of interest's arterial pulse transit time from time-varying source signals generated from video images. In one embodiment, a video imaging system is used to capture a time-varying source signal of a proximal and distal region of a subject of interest. The image frames are processed to isolate localized areas of a proximal and distal region of exposed skin of the subject. A time-series signal for each of the proximal and distal regions is extracted from the source video images. A phase angle is computed with respect to frequency for each of the time-series signals to produce respective phase v/s frequency curves for each region. Slopes within a selected cardiac frequency range are extracted from each of the phase curves and a difference is computed between the two slopes to obtain an arterial pulse transit time for the subject. | 01-09-2014 |
20140046198 | PHYSIOLOGICAL MONITORING USING AN OCULAR PROBING SYSTEM AND METHOD - A method and system perform physiological monitoring. The system includes a first light source and a plurality of optical waveguide couplers, each of the plurality of optical waveguide couplers being arranged at a different predetermined spatial location on an ocular insert to be placed on an eye. The system also includes a plurality of optical waveguides. Each optical waveguide carries light from a second light source to a respective one of the plurality of optical waveguide couplers and carries a received signal from the respective one of the plurality of optical waveguide couplers. A processor receives the received signal from each of the plurality of optical waveguides and monitors a parameter based on the received signal. | 02-13-2014 |
20140058273 | Apparatus, Systems and Methods Analyzing Pressure and Volume Waveforms in the Vasculature - Apparatus, systems and methods are provided for analyzing relative compliance in the peripheral vasculature that generally involve generating a plethysmograph (PG) signal, generating one or more pressure waveforms and comparing the pressure waveform(s) relative to the PG signal to determine compliance indexes associated particular regions of the vasculature. A relative compliance ratio may also be determined by comparing arterial and venous relative compliance indexes. Apparatus, systems and methods are also provided for analyzing a PG waveform that generally involve generating a plethysmograph (PG) signal and comparing amplitude modulation of the PG signal relative to baseline modulation of the PG signal to estimate a relationship between left ventricular end diastolic pressure and stroke volume. The estimated relationship may account for a phase offset for the time between when changes in venous return affect left ventricular end diastolic pressure and stroke volume. | 02-27-2014 |
20140088441 | NONINVASIVE METHOD FOR DETERMINING THE PRESENCE OF SYSTEMIC HYPERTENSION IN A SUBJECT - A non-invasive method for determining and characterizing the presence of damage or abnormalities resulting from or concomitant with systemic hypertension in subject. This method is comprised of the acquisition of ocular image(s) and subsequent evaluation, classification and/or interpretation of these image(s). The ocular image(s) may be acquired by photography. Evaluation, classification, and/or interpretation may be automated or involve the active participation of a human. The ocular images may be classified into either a normal or clinical group or compared to an algorithm of hypertensive symptoms. The ocular images may, additionally, be processed and have the pertinent characteristics extracted to make the classification more exact. | 03-27-2014 |
20140163392 | Sheath with Optically Interrogatable Sensors - An intravascular sensor system including an array of pressure and/or temperature sensors for detecting pressure and/temperature. In one example, the sensors are interrogated with an optical catheter. In this example, the swept source is able to acquire both image and pressure/temperature data of a patient's vessel or artery. In another example, the intravascular pressure sensor system has a sheath embedded with pressure sensors in the sheath wall. Other examples include the process of making and using the intravascular pressure sensor system. | 06-12-2014 |
20140276120 | APPARATUS AND METHOD FOR MONITORING PRESSURE RELATED CHANGES IN THE EXTRA-THORACIC ARTERIAL CIRCULATORY SYSTEM - A method and apparatus for monitoring changes in the intra-thoracic pressure of a patient due to the patient's respiratory activity or volumetric changes in the extra-thoracic arterial circulatory system due to cardiac function based on the changes in pressure in the patient's extra-thoracic arterial circulatory system as measured by a plethysmography sensor, such as an photoplethysmograph. A frequency spectrum is generated for the plethysmograph signal and the frequencies of interest is isolated from the frequency spectrum by setting appropriate cutoff frequencies for the frequency spectrum. This isolated frequency is used to filter the plethysmograph signal to provide a signal indicative of the patient's respiratory activity or cardiac function. | 09-18-2014 |
20140288437 | BIOMETRIC INFORMATION PROCESSING DEVICE, BIOMETRIC INFORMATION PROCESSING METHOD, AND CONTROL PROGRAM - A biometric information processing device includes a main case that is designed to be worn on a body of a user. The main case includes a battery unit that provides power to a pulse sensor, a processing unit that determines a biometric information of the user based on information from the pulse sensor, a display unit that displays at least one of the biometric information and a calorie expenditure information spent by the user, and a rotation stop unit that is formed in unison with the main case and is disposed at a 6 o'clock side of the main case, and has an electrical circuit to send an electrical signal to the processing unit. | 09-25-2014 |
20140350414 | PRESSURE SENSING GUIDEWIRE SYSTEMS INCLUDING AN OPTICAL CONNECTOR CABLE - Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a system for measuring blood pressure. The system may include a pressure sensing guidewire including a pressure sensor and a first optical fiber extending proximally from the pressure sensor. The system may also include an optical connector cable including a distal connector capable of being coupled to the guidewire. The optical connector cable may include a second optical fiber that is capable of optically communicating with the first optical fiber. A coupler may be disposed within the distal connector and disposed between the first optical fiber and the second optical fiber. | 11-27-2014 |
20140364746 | METHODS AND SYSTEMS FOR RECALIBRATING A BLOOD PRESSURE MONITOR WITH MEMORY - Systems and methods are provided for storing and recalling metrics associated with physiological signals. It may be determined that the value of a monitored physiological metric corresponds to a stored value. In such cases, a patient monitor may determine that a calibration is not desired. In some cases, a patient monitor may recall calibration parameters associated with the stored value if it determined that the stored value corresponds to the monitored metric value. | 12-11-2014 |
20150051500 | PERSONAL HEALTH DATA COLLECTION - The present invention provides a personal band held monitor comprising a signal acquisition device for acquiring signals which can be fixed to derive a measurement of a parameter related to the health of the user, the signal acquisition device being integrated with a personal hand-held computing device. The present invention also provides a signal acquisition device adapted to be integrated with a personal handheld computing device to produce a personal hand-held monitor as defined above. | 02-19-2015 |
20150105673 | PRESSURE SENSING GUIDEWIRE AND METHODS FOR CALCULATING FRACTIONAL FLOW RESERVE - Medical devices and methods for making and using medical devices are disclosed. An example method may include a method for calculating fractional flow reserve including providing a pressure sensing guidewire, advancing the pressure sensing guidewire through a blood vessel to a first position distal of an intravascular occlusion, determining a distal pressure within the body lumen with the pressure sensing guidewire, proximally shifting the pressure sensing guidewire to a second position proximal of the occlusion, determining a proximal pressure within the body lumen with the pressure sensing guidewire, measuring an aortic pressure, and calculating a pressure drift. The pressure drift may be the difference between the aortic pressure and the proximal pressure. The method may also include calculating a drift-compensated fractional flow reserve. The drift-compensated fraction flow reserve may correspond to (the distal pressure+the pressure drift) divided by the aortic pressure. | 04-16-2015 |
20150141849 | METHOD AND DEVICE FOR NONINVASIVE BLOOD PRESSURE MEASUREMENT - The invention relates to a method and a device for noninvasive blood pressure measurement by means of two pressure cuffs ( | 05-21-2015 |
20150148691 | HEALTH MONITORING SYSTEMS AND METHODS - Systems, methods and devices for reducing noise in health monitoring including monitoring systems, methods and/or devices receiving a health signal and/or having at least one electrode or sensor for health monitoring. | 05-28-2015 |
20150297098 | Method and Device for Assessing the Risk of Cardiovascular Complications - The group of inventions is directed to improving the reliability and objectivity of assessment of the risk of cardiovascular complications. Using optical capillaroscopy of the nail fold of a finger in a state of reactive hyperemia and in the absence thereof, the size of the perivascular area and the diameters of the venous and arterial portions of the capillaries are measured. pulse wave velocity and the level of endothelial function in the upper limb are measured simultaneously relative to the R peak of an electrocardiogram, and an index K of the risk of cardiovascular complications is calculated using the given expression and categorized. The device comprises: a pneumatic means for creating occlusion in a limb of the patient and pressure sensors connected to occlusion cuffs; an input unit capable of receiving and regulating the level of signals from the output of the pressure sensors and of amplifying and pre-filtering said signals; an optical capillaroscopy unit capable of measuring the size of the perivascular zone and the diameters of the venous and arterial portions of the nail fold capillaries of a finger in a state of reactive hyperemia and in the absence thereof; an electrocardiogram recording unit capable of generating a pulsed synchronization signal based on the R wave of the electrocardiogram; a unit for amplitude-to-digital conversion, digital signal processing and control, a switching unit, and a unit for communicating with a computer. | 10-22-2015 |
20150305682 | Methods of Monitoring Physiological Properties - A method of monitoring at least one physiological property of an organism includes directing energy at a first skin region of the organism and at a second skin region adjacent the first skin region, and detecting an energy response signal from the first skin region and an energy response signal from the second skin region, wherein both energy response signals contain information about blood flow and skin motion. The energy response signals are processed to produce an extracted energy response signal containing cleaner blood flow information. The extracted energy response signal may be compared with a physiological model to assess a physiological condition of the organism. | 10-29-2015 |
20150320328 | BLOOD PRESSURE MONITOR - Described herein are methods, systems, and software for monitoring blood pressure. In some embodiments, a using a mobile device is used. The blood pressure monitoring system utilizes heart rate measurements at two separate locations on the body to calculate a differential pulse arrival time which is used to estimate blood pressure. The heart rate measurements can be taken simultaneously, or they can be taken sequentially while simultaneously taking ECG measurement. If taken sequentially, the heart rate measurements are aligned with the ECG to determine the differential. Accurate, inexpensive, and discreet blood pressure monitoring is thus provided. | 11-12-2015 |
20150327800 | APPARATUS AND METHOD FOR OBTAINING VITAL SIGN OF SUBJECT - An apparatus for obtaining a vital sign of a subject includes: an image sensor and a vital sign processor. The image sensor is employed for capturing a video of the subject to generate a plurality of first video frames. The vital sign processor is employed for processing the plurality of first video frames to generate a vital sign signal. Additionally, the vital sign processor adjusts a first parameter set for configuring the image sensor to make the plurality of first video frames suitable for obtaining the vital sign of the subject. | 11-19-2015 |
20150348260 | System and Method for Mapping Patient Data from One Physiological State to Another Physiological State - Systems and methods for determining a quantity of interest of a patient comprise receiving patient data of the patient at a first physiological state. A value of a quantity of interest of the patient at the first physiological state is determined based on the patient data. The quantity of interest represents a medical characteristic of the patient. Features are extracted from the patient data, wherein the features which are extracted are based on the quantity of interest to be determined for the patient at a second physiological state. The value of the quantity of interest of the patient at the first physiological state is mapped to a value of the quantity of interest of the patient at the second physiological state based on the extracted features. | 12-03-2015 |
20150366456 | PULSE WAVE VELOCITY MEASUREMENT METHOD - The present invention provides a pulse wave velocity measurement method and system as well as an imaging device available for everyday use by general users at low cost with measurement accuracy less affected by posture or the like. The present invention simultaneously images different parts of a human body in a non-contact state by a single visible light camera and acquires continuous time series image data. Then, the present invention detects each pulse wave from the image data in the different parts of the human body based on a temporal change in pixel value of the different parts of the human body, and then calculates a pulse wave velocity of the human body based on a time difference between the pulse waves in the different parts of the human body. | 12-24-2015 |
20160007865 | BLOOD FLOW INDEX CALCULATING METHOD, BLOOD FLOW INDEX CALCULATING APPARATUS, AND RECORDING MEDIUM | 01-14-2016 |
20160015282 | BIOLOGICAL INFORMATION DETECTION APPARATUS AND METHOD - Provided are biological information detection apparatuses and methods of detecting biological information. The biological information detection apparatus includes a pulse wave measuring unit configured to detect a biological signal of a subject; a height controller configured to adjust a height of the pulse wave measuring unit; and a support member formed on a side of the height controller, wherein the pulse wave measuring unit is further configured to detect the biological signal while the pulse wave measuring unit is spaced apart from a surface skin of the subject by the adjusted height. | 01-21-2016 |
20160029909 | NEUROGENIC BAROREFLEX SENSITIVITY MEASUREMENT DEVICE, NEUROGENIC BAROREFLEX SENSITIVITY MEASUREMENT PROGRAM AND NEUROGENIC BAROREFLEX SENSITIVITY MEASUREMENT METHOD - [Problem] To provide a neurogenic baroreflex sensitivity measurement device, neurogenic baroreflex sensitivity measurement program and neurogenic baroreflex sensitivity measurement method capable of easily and objectively measuring neurogenic baroreflex sensitivity that is not dependent on vascular hardness without using blood pressure or pulsations in the diameter of the carotid artery. | 02-04-2016 |
20160038044 | MEASURING BLOOD PRESSURE - A method for measuring blood pressure of a subject is described herein. In an implementation, the method includes obtaining a plurality of photoplethysmogram (PPG) features associated with the subject. The method further includes ascertaining one or more latent parameters associated with the subject based on the plurality of PPG features and a reference model, wherein the reference model indicates a correlation between the plurality of PPG features and the one or more latent parameters. Further, blood pressure of the subject is determined based on the one or more latent parameters and the plurality of PPG features. | 02-11-2016 |
20160038048 | METHOD AND SYSTEM FOR DETECTING HEARTBEAT IRREGULARITIES - There is a method and system for detecting heartbeat irregularities comprising the steps of receiving a dataset representative of at least one waveform, the at least one waveform indicative of a subject's heart activity over a predetermined period of time; identifying from the data representative of at least one waveform, a plurality of peaks, each peak corresponding to a heartbeat; identifying from the predetermined period of time the time occurrence of each peak; calculating the difference (duration) between the time occurrence of each peak with its adjacent peak; determining the difference between each duration; classifying the absolute value of the difference into one of at least three intermediate categories; wherein each intermediate category comprises a specified range such that the absolute value is categorized into the intermediate category if it falls between the range; the intermediate categories further providing an indication of whether the subject has heartbeat irregularity. | 02-11-2016 |
20160058300 | APPARATUS FOR AND METHOD OF MONITORING BLOOD PRESSURE AND WEARABLE DEVICE HAVING FUNCTION OF MONITORING BLOOD PRESSURE - A method of monitoring a blood pressure includes: emitting a laser to a blood vessel in a body part; detecting, from the body part, laser speckles caused by scattering of the emitted laser; obtaining a bio-signal indicating a change in a volume of the blood vessel by using the detected laser speckles; and estimating a blood pressure based on the obtained bio-signal. | 03-03-2016 |
20160089031 | Vital Signs Fiber Optic Sensor Systems and Methods - An intensity-based, micro-bending optical fiber sensor is disclosed herein, which is configured to acquire clean, stable, and reliable vital sign signals. Related systems and methods for vital sign monitoring are also provided herein. The sensor of various embodiments includes a multi-mode optical fiber, an LED light source, an LED driver, a receiver, and a single layer deformer structure. In various embodiments, the optical fiber and single layer deformer structure of the sensor are selected to meet specific parameters necessary to achieve a level of reliability and sensitivity needed to successfully monitor vital signs. In some embodiments, a specific sizing relationship exists between the optical fiber and the single layer deformer structure. In sonic embodiments, the sensor is configured to acquire ballistocardiograph waveforms. | 03-31-2016 |
20160089036 | SENSOR AND BIOLOGICAL SIGNAL MEASURING SYSTEM - A biological signal measuring system includes a sensor and a biological signal measuring apparatus configured to calculate a blood refill time of a living tissue of a subject. The sensor includes a pressure applying portion configured to apply pressure on the living tissue, a light emitter configured to emit light toward the living tissue, a light receiver configured to receive reflected light or transmitted light from the living tissue, a first light transmitting member made of a light transmitting material and having one side contacting the light emitter and the other side arranged to contact the subject, a second light transmitting member made of a light transmitting material and having one side contacting the light receiver and the other side arranged to contact the subject, and a light blocking member configured to block light between the light emitter and the light receiver. | 03-31-2016 |
20160100787 | SYSTEMS AND METHODS FOR BLOOD PRESSURE MEASUREMENT WITH PSYCHOLOGICAL STATUS VALIDATION - Techniques for effectively and accurately measuring psychological influencing factors, such as the white coat effect and mental stress, that may affect or otherwise influence biometric measurements, such as blood pressure measurements, are described. Embodiments of a measurement validation system herein may utilize a method for determining an artery location on a living subject's skin and positioning a tonometry pressure sensor on the artery location for tonometric blood pressure measurement to obtain pressure pulse data for a subject. In operation according to embodiments, measurement logic of a measurement validation system may utilize the pressure pulse data to extract blood pressure data, heart rate data, blood pressure variability data, and heart rate variability data. The foregoing data may be utilized in identifying whether the blood pressure measurement properly and accurately reflects the situation of the subject. | 04-14-2016 |
20160106325 | APPARATUS AND METHOD FOR DETECTING BIOMETRIC INFORMATION - Provided is an apparatus and method for detecting biometric information. The apparatus may include a biometric signal measurer comprising a light-receiving element and a plurality of light-emitting elements; and a processor including a tracking unit configured to sequentially drive the plurality of light-emitting elements, receive a signal detected by the light-receiving element, and determine a tracking line that connects at least two positions of a radial artery of the object from the received signal; and an analyzing unit configured to detect a pulse wave signal at the at least two points on the tracking line and analyze biometric information from the detected pulse wave signal. | 04-21-2016 |
20160106327 | APPARATUS AND METHOD FOR ACQUIRING BIO-INFORMATION - An apparatus for acquiring bio-information includes a light source configured to radiate a laser beam to a region of interest including a blood vessel; a sensor configured to sense, from the region of interest, a change of a laser speckle generated by the radiated laser beam; and a controller configured to obtain a bio-signal indicating a change in a blood flow in the blood vessel based on the sensed change of the laser speckle. | 04-21-2016 |
20160106328 | DETERMINING ARTERIAL PULSE TRANSIT TIME FROM TIME-SERIES SIGNALS OBTAINED AT PROXIMAL AND DISTAL ARTERIAL SITES - What is disclosed is a system and method for determining arterial pulse transit time (PTT) for a subject. In one embodiment, time-series signals are received for each of a proximal and distal arterial site of a subject's body which represent blood volume changes in the microvascular tissue at each site. A proximal and distal analytic signal is obtained which has a first component being a waveform of the respective time-series signal and a second component being a transform of the respective waveform. A phase function is determined for the first and second components of each analytic signal. The phase function obtained for the proximal waveform is then subtracted from the phase function obtained for the distal waveform to get a phase difference. The phase difference is analyzed with the subject's heart rate to determine an arterial pulse wave transit time between the two proximal and distal sites. | 04-21-2016 |
20160113529 | BLOOD PRESSURE MEASURING APPARATUS, WRIST WATCH TYPE TERMINAL HAVING THE SAME, AND METHOD OF MEASURING BLOOD PRESSURE - Provided is a blood pressure measuring apparatus, a wrist watch type terminal, and a method of measuring blood pressure. The blood pressure measuring apparatus includes a light source that emits light onto a living body, a light receiver that receives light from the living body, and a signal processing device that calculates the blood pressure based on a detected signal received from the light receiver, wherein the signal processing device includes a subtractor that obtains a subtraction value by subtracting a moving average value of the detected signal in a second duration which is shorter than a first duration from a moving average value of the detection signal in the first duration, an extractor that extracts a feature point of a pulse wave based on the subtraction value, and a converter that converts a feature amount obtained based on the feature point to a blood pressure value. | 04-28-2016 |
20160143546 | SYSTEM FOR CALIBRATING A BLOOD PRESSURE MEASUREMENT BASED ON VASCULAR TRANSIT OF A PULSE WAVE - The invention provides a system and method for measuring vital signs (e.g. SYS, DIA, SpO2, heart rate, and respiratory rate) and motion (e.g. activity level, posture, degree of motion, and arm height) from a patient. The system features: first and second sensors configured to independently generate time-dependent waveforms indicative of one or more contractile properties of the patient's heart; and a cuff-based oscillometric module. A processing component, typically worn on the patient's body and featuring a microprocessor, receives the time-dependent waveforms generated by the different sensors and processes them to determine patient-specific calibration values for use in a continuous blood pressure measurement based on pulse wave velocity (PWV). | 05-26-2016 |
20160166160 | System and Method for Blood Pressure Estimation | 06-16-2016 |
20160174854 | BLOOD PRESSURE MEASUREMENT DEVICE, ELECTRONIC DEVICE, AND BLOOD PRESSURE MEASUREMENT METHOD | 06-23-2016 |
20160174855 | MULTIUSE OPTICAL SENSOR | 06-23-2016 |
20160198962 | APPARATUS AND METHOD FOR SIMULTANEOUSLY DETECTING SURFACE PRESSURE AND BLOOD VOLUME | 07-14-2016 |
20160198963 | METHODS AND SYSTEMS FOR RECALIBRATING A BLOOD PRESSURE MONITOR WITH MEMORY | 07-14-2016 |
20170231511 | SKIN PERFUSION PRESSURE MEASURING APPARATUS | 08-17-2017 |
20180020929 | PRESSURE SENSING GUIDEWIRE AND METHODS FOR CALCULATING FRACTIONAL FLOW RESERVE | 01-25-2018 |
20180020934 | APPARATUS AND METHOD FOR SIMULTANEOUSLY DETECTING SURFACE PRESSURE AND BLOOD VOLUME | 01-25-2018 |
20180020991 | METHOD AND APPARATUS FOR DERIVING MEAN ARTERIAL PRESSURE OF A SUBJECT | 01-25-2018 |
20190142286 | PHOTOPLETHYSMOGRAPHIC WEARABLE BLOOD PRESSURE MONITORING SYSTEM AND METHODS | 05-16-2019 |