Abstract: Tracking and monitoring athletic activity offers individuals with additional motivation to continue such behavior. An individual may track his or her athletic activity by utilizing a wearable device assembly configured to monitor various aspects of athletic performance. In some embodiments, the wearable device assembly may comprise a USB-type device having athletic functionality and configured to transmit to and/or receive data from an external computing device.

Abstract: A wearable device and the accompanying method for the determination of continuous pulsatile BP are described. The absolute values can be obtained in the initial phase and how a transfer function can transform the BP-signal obtain at the finger or wrist to correct BP-values corresponding to the brachial artery and at heart level. The wearable device contains an orthostatic level-correcting element, which can measure the vertical distance between heart level and finger/wrist level, where the actual measurement takes places. The wearable device may be in the form of a ring, a watch, or a bracelet. Further, the wearable device has elements for wirelessly transmitting signals to host devices such as a smart phone, tablet or other computers.

Abstract: A system for maintaining permissive hypotension in a patient includes monitoring of blood perfusion and pressure, combining blood perfusion and pressure data to determine systolic blood pressure, monitoring for detection of systolic blood pressure below a critical threshold value, and providing an alert to perfusion options to maintain permissive hypotension. The system may be adapted to adjust the critical threshold value for systolic blood pressure as treatment progresses.

Abstract: Devices and methods provide feedback on breathing rate, where the device comprises a sensor interface configured to receive an electrocardiogram ECG signal; an ECG analysis unit configured to obtain a breathing rate from the received ECG signal; a feedback output mechanism for providing feedback; and a feedback generator configured to obtain an optimal breathing rate in accordance with a desired outcome and one or more heart rate and/or breathing rate characteristics detected from the ECG signal. The feedback generator is further configured to control the feedback output mechanism to output feedback synchronized to the optimal breathing rate, and subsequently adapt the feedback in accordance with changes in the one or more heart rate and/or breathing rate characteristics while the feedback is being outputted. The feedback generator may be configured further to recalculate the optimal breathing rate when the user has failed to achieved the optimal breathing rate.

Abstract: A system and method of dynamically localizing a measurement of parameter characterizing tissue sample with waves produced by spectrometric system at multiple wavelengths and detected at a fixed location of the detector of the system. The parameter is calculated based on impulse response of the sample, reference data representing characteristics of material components of the sample, and path lengths through the sample corresponding to different wavelengths. Dynamic localization is effectuated by considering different portions of a curve representing the determined parameter, and provides for the formation of a spatial map of distribution of the parameter across the sample. Additional measurement of impulse response at multiple detectors facilitates determination of change of the measured parameter across the sample as a function of time.

Abstract: A method includes forming one or more vias in a first layer, forming one or more vias in at least a second layer different than the first layer, aligning at least a first via in the first layer with at least a second via in the second layer, and bonding the first layer to the second layer by filling the first via and the second via with solder material using injection molded soldering.

Abstract: A pulse wave detection apparatus has a sensor chip that includes a substrate that has a shape of extending so as to be elongated in an X direction, and that is arranged so as to intersect an artery. A pressure sensor array is formed on the substrate and is made up of pressure sensor elements that are arranged side-by-side in the X direction. An electrode terminal array for transmitting output from the pressure sensor elements to the outside of the sensor chip is formed in a region that opposes an end portion of the pressure sensor array on the substrate. Regions that correspond to two sides of the pressure sensor array on the substrate are planar surfaces on which electrode terminals are not located.

Abstract: A vital signs monitoring system, the system including: (a) an ear device including: a curved body adapted to a shape of an ear, an upper end, a lower end, two opposite facing sides, a first side adapted to be proximal a skull and a second side adapted to be proximal an earlobe, the ear device including: (i) a temperature sensor adapted to sense a body temperature from a depression between a lower jawbone and skull; and (b) a control system, including a processor and a memory, configured and operable to control operation of the ear device, to collect signals received from at least one sensor including the temperature sensor, to process the signals to provide medically significant results.

Abstract: Disclosed herein is a framework for facilitating thermal patient signal analysis. In accordance with one aspect, the framework receives patient signal data including thermal signal data. The framework then segments a region of interest from the thermal signal data. One or more cardiac output indices may be determined based on one or more parameters extracted from the segmented region of interest to characterize cardiac output or stroke volume. A report may then be generated based at least in part on the one or more cardiac output indices.

Abstract: A system device and method are presented for determining if cerebral blood flow autoregulation functionality has been compromised in a patient. The system includes sensors for detecting and measuring at least two physiological parameters such as oxygenation and blood pressure. The system analyzes these measurements and presents them as waveforms. Episodes of interest in each waveform are determined and compared. Any time lag between the occurrence of episodes of interest in each waveform is established and accounted for. Where there is correspondence between episodes of interest in each waveform then impairment of cerebral blood flow autoregulation is likely.

Abstract: Devices and methods are disclosed which relate to the detection of cardiovascular efficiency and risk of disease. The rate of volumetric change of the heart can be determined by measuring the parallel conductance across electrodes attached to the heart. Measurements from a lumen would consider the total conductance. The rate of volumetric or lumen cross-section area change can then be compared to an average model to determine the health of a patient.

Abstract: An ultrasonic diagnostic imaging system is described which quantifies regurgitant flow through a mitral valve, including the automatic indication of the location of a regurgitant orifice in an ultrasound image. A clinician images the regurgitant valve and indicates in the image the presumed location of the regurgitant orifice (130). A flow quantification processor is responsive to this initial location estimate by the clinician to calculate a refined estimation of the orifice location. The refined location is indicated on the ultrasound image by the imaging system, either by relocating an icon placed by the clinician, or displaying a second icon (132) on the image at the refined location.

Abstract: A method for measuring reactive hyperemia in a subject is disclosed. The method includes performing a first segmental cuff plethysmography to generate a baseline arterial compliance curve and/or a baseline pressure-area (P-A) curve, performing a second segmental cuff plethysmography to generate a hyperemic arterial compliance curve and/or a hyperemic P-A curve, and calculating an area between the baseline and the hyperemic curves. The size of the area can be used as an indication of endothelial dysfunction (ED) and ED-related diseases.

Abstract: Portable physiological measuring devices and methods are disclosed. Embodiments may provide measurement of blood pressure without traditional blood pressure cuffs. Further, disclosed embodiments may gather pulse oximetry (SpO2), heart rate and body temperature measurements simultaneously. A user's blood pressure index and other vital physiological results may be displayed on a portable physiological measuring apparatus or a portable terminal. Embodiments may provide a portable physiological measuring method and apparatus that displays results on a displayed screen.

Abstract: An apparatus comprises a shaft, an expandable dilator, and at least one ventilation pathway. The shaft defines a longitudinal axis and comprises a distal and proximal ends with at least one shaft lumen. The expandable dilator comprises body with its own proximal and distal ends. The body is configured to transition between a contracted state and an expanded state. The body is configured to dilate a Eustachian tube of a patient in the expanded state. The at least one ventilation pathway is configured to provide ventilation from the distal end of the body to the proximal end of the body when the body is in the expanded state. In some examples, the ventilation pathway comprises a set of transversely oriented vent openings formed through the shaft. In some other examples, the ventilation pathway comprises a space defined between one or more radially outwardly protruding features of the expandable dilator.

Abstract: A system for measuring physiological aspects has a non-invasive monitor configured to generate monitor signals relating to fluid characteristics in the head and body. A computational device is operatively connected to the monitor and is configured to process the monitor signals to generate characterizing data relating to at least one of regional fluid volumes, intra/extracellular fluid volume ratios and blood flow. A data output device is connected to the computational device and is configured to output the characterizing data. A method and a computer program product for recording, measuring, and displaying physiological characteristics are also provided.

Abstract: A magnetic connector has a receptacle and a plug. The receptacle has an electromagnet comprising an inner core, an outer core, a coil disposed around the inner core and an air gap defined by the edges of the inner and outer cores. The plug has a plug core and an anchor defined by the plug core edge. The anchor is configured to insert into the air gap as a receptacle socket electrically connects with plug pins. The coil is energized and de-energized so as to assist in the insertion or removal of the anchor from within the air gap and the corresponding connection and disconnection of the socket and pins.

Abstract: A pressure sensor includes a base having at least one high-pressure contact portion and a diaphragm positioned over the base and having an external top surface facing away from the base and internal surfaces facing the base. The internal surfaces comprising a raised perimeter surrounding an interior, a raised central boss within the interior, and a raised boss arm contiguous with and extending from the raised perimeter toward the interior. At least one of the raised boss arm and raised central boss are aligned with and contact a high-pressure contact portion of the base during an over-pressure event.

Abstract: A blood pressure monitor, particularly of the type having an inflatable cuff communicating with a pressure sensor and suitable for home use, may be calibrated by applying a sealed canister containing gas at a known pressure to a port so as to apply the known pressure to the pressure sensor, and comparing a pressure signal from the pressure sensor with the known pressure so as to determine a calibration error of the sensor and/or adjust the calibration of the sensor, e.g. by electronically adjusting the sensor. Several canisters may be used to calibrate the sensor across a range of pressures, each canister having a different known pressure. Each canister is preferably ruptured when attached to the port and is not re-usable, and may comprise an identifier such as an electronically readable identifier which is stored in a memory in association with the value of the known pressure within the canister.

Abstract: Aspects relate to a portable device that may be used to identify a critical intensity and an anaerobic work capacity of an individual. The device may utilize muscle oxygen sensor data, speed data, or power data. The device may utilize data from multiple exercise sessions, or may utilize data from a single exercise session. The device may additionally estimate a critical intensity from a previous race time input from a user.

Abstract: A pneumocardial function monitor includes a carrier configured to be mounted about at least a part of a trunk of a body of a subject. A sensing arrangement is mounted on the carrier, the sensing arrangement including at least one element for monitoring changes in volume of the part of the subject's body. A signal processing module is in communication with the sensing arrangement for processing signals output from the sensing arrangement, the signal processing module having at least one output for outputting a signal related to respiratory function and/or cardiac function.

Abstract: Continuous monitoring of a plurality of physiological data may be used for health and fitness improvements for a user. To this end, a physiological monitoring and measurement device may include a wearable strap that receives heart rate data for a user including a time series of heart rate data, a maximum heart rate, and a resting heart rate. A processor may transform the heart rate data into a time series of heart rate reserve data that is weighted, e.g., to account for cardiovascular efficiencies at different intensity levels, to provide a weighted time series of heart rate reserve values. An intensity score that provides an indicator of cardiovascular intensity for an exercise routine may be generated from the weighted time series of heart rate reserve values and displayed to the user on the wearable strap.

Abstract: A method of determining a value indicative of a hemodynamic parameter of a patient includes performing a plurality of value determinations. Performing the plurality of value determinations includes determining a first value indicative of the hemodynamic parameter, determining, with a controller, a difference between the first value and a baseline associated with the first value, and replacing the baseline with the first value, in a memory of the controller, if the difference is outside of a predetermined range. The method also includes determining an estimate of the hemodynamic parameter based on acceptable values determined during the plurality of value determinations.

Abstract: An apparatus for controlling a frequency analysis processing includes: a memory; and a processor coupled to the memory and configured to execute a fast Fourier transform process that includes performing a fast Fourier transform operation on data of two groups into which sensor data sensed at a first sampling frequency by a sensor is divided, and execute a change process that includes changing, in a case where results of butterfly operations of the fast Fourier transform operation are similar between the two groups, a sampling frequency at which the sensor operates to a second sampling frequency lower than the first sampling frequency.

Abstract: A method for measuring and determining a pulse arrival time (PAT) value of a user using a sensor device having 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; having: measuring the 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.

Abstract: Embodiments of the present invention provide an improved transformation method whereby the peripheral pulse waveform is filtered to separate different phases which make up the waveform. The separate phases are transformed before being re-combined to provide an estimated intra-arterial transfer function. For example, in one embodiment the peripheral pulse waveform is filtered by a first high pass filter, and a copy of the peripheral pulse waveform filtered by a second high pass filter, having a different cut-off frequency. The two filtered waveforms may then be further processed, for example by being added back to original wave-form, and are then multiplexed together in a time division manner to provide a final waveform.

Abstract: A device for obtaining physiological information of a medical patient and wirelessly transmitting the obtained physiological information to a wireless receiver.

Abstract: An occlusion catheter system includes a proximal hub having an inflation connection port and an inflation pathway. An inflation catheter member is connected to the proximal hub and has an inflation lumen. A stiffener member defines a longitudinal axis. The proximal end of the stiffener member is connected to the proximal hub. The stiffener member extends through a portion of the inflation lumen. An occlusion balloon has a proximal balloon end and a distal balloon end. A distal catheter member is positioned substantially on the longitudinal axis and is connected to the distal end of the stiffener member. An atraumatic tip is positioned on a distal end of the distal catheter member. The atraumatic tip has a substantially circular profile in a relaxed configuration. A pressure sensor is connected to the occlusion catheter system distally relative to the occlusion balloon and is connected to a processor by electrical wiring.

Abstract: Systems and methods for dynamically adjusting the fit of a wearable electronic device are disclosed. In many embodiments, a tensioner associated with a wearable electronic device can control one or more actuators that are mechanically coupled to either the housing or to a band attached to the wearable electronic device. In one example, in response to a signal to increase the tightness of the band, the tensioner can cause the actuator(s) to increase the tension within the band.

Abstract: Medical devices and related systems and operating methods for communicating data therewith are provided. An exemplary method involves the medical device detecting an interfacing device coupled to the medical device via a physical communications medium, initializing a wireless communications session with the interfacing device in response to detecting the interfacing device, modulating an electrical signal between the interfacing device and the medical device to transmit data from the medical device to the interfacing device via the physical communications medium, and receiving communications, such as acknowledgments of the transmitted data, from the interfacing device via the wireless communications session.

Abstract: Systems and methods are provided for in vivo measurement of pressure. An implantable sensor assembly includes a pressure sensor configured to provide an analog signal representing pressure and a signal conditioning component configured to convert the pressure sensor output into a digital signal. A transmitter is configured to transmit the digital signal to an external base unit. A power control unit is configured to dynamically allocate power throughout the implantable sensor assembly, such that during an active measurement interval of the implantable sensor assembly, each of the pressure sensor, the signal conditioning component, and the transmitter are powered only for a portion of the active measurement interval necessary to perform a related function.

Abstract: An apparatus for extracorporeal blood treatment (1) is described, comprising a treatment unit (3) having at least a first chamber (4) and at least a second chamber (5) separated from one another by a semi-permeable membrane (6); at least a blood removal line (7) connected to an inlet port (4a) of the first chamber (4) and predisposed to remove blood from a patient (P); at least a blood return line (8) connected to an outlet port (4b) from the first chamber (4) and predisposed to return treated blood to the patient (P), wherein the blood removal line (7), the blood return line (8) and the first chamber (4) are part of an extracorporeal blood circuit (2); at least a peristaltic pump (9) operating at the extracorporeal blood circuit (2) for moving the blood in the circuit; at least a pressure sensor (13, 14) associated to the extracorporeal blood circuit (2) and configured to enable determining pressure values in the extracorporeal blood circuit (2); at least a fluid drainage line (23) connected to an outlet por

Abstract: The invention relates to a system for energy on-site collection and measurement feedback, which comprises fitness apparatuses capable of producing mechanical energy, generators, power meters and energy storage accumulators, wherein the fitness apparatuses are provided with moving parts for exercise which are connected with the generators and drive the generators to generate power; the generators are connected with the accumulators through the power meters for measuring the generating capacity; and each power meter comprises a bank card reader which has function of reading and updating data. The power meters can count and display energy produced by the excise of each person each time and a data processing host can summarize energy values produced by different apparatuses on the same site, so that exercisers are promoted to increase interest in exercise and take exercise regularly.

Abstract: 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.

Abstract: Methods and systems for identifying a malfunction in the extracorporeal blood circulation of a dialysis machine are disclosed. The malfunction may be identified by detecting at least one state parameter; determining a first evaluation criterion for identifying a malfunction in the extracorporeal blood circulation (FEB); using the first evaluation criterion, making a decision with respect to the presence of a malfunction in the extracorporeal blood circulation, generating a first error signal, and monitoring the detected state parameter; determining at least one further evaluation criterion; using the at least one further evaluation criterion, making a decision with respect to the presence of a malfunction in the extracorporeal blood circulation and generating at least one further error signal; combining the first error signal and the at least one further error signal to result in a combined error signal; and triggering an alarm if the combined error signal exceeds a predetermined limit value.

Abstract: Systems and methods for correlating diagnostic readings obtained by at least two medical devices can include a pressure offset correction parameter that is calculated for the purpose of correlating oscillometric blood pressure readings between a “home” blood pressure monitor and an “office” blood pressure monitor. The offset correction parameter is used to adjust blood pressure readings of the “home” or “office” blood pressure monitor such that these readings can be validly compared with blood pressure readings obtained using the other blood pressure monitor. In this manner, a more complete and reliable blood pressure trend may be developed and used for managing blood pressure related medical conditions.

Abstract: A measurement device includes a detection device to detect a pulse wave signal at a first measurement location in a vascular pathway from the heart of a measurement subject to an area where an arterial aneurysm is predicted to occur and a pulse wave signal at a second measurement location in a vascular pathway from the heart of the measurement subject to an area that is different from the area where an arterial aneurysm is predicted to occur, a comparison device to calculate a comparison result by comparing frequency characteristics between the pulse wave signals, and a determination device to determine at least one of the presence/absence and size of an arterial aneurysm based on a predetermined characteristic amount for a frequency contained in the comparison result.

Abstract: A physiology signal sensing device includes an elastic pad and a strain sensor element. The elastic pad is used for contact with a human body, and corresponds a blood vessel of the human body. The strain sensor element is disposed in the elastic pad and includes a conductive element. The conductive element deforms according to the vibration of the blood vessel, and the resistance value of the conductive element varies according to the strain of the conductive element.

Abstract: A method of determining stiffness index of an arterial network is disclosed. The method comprises the steps of: obtaining a pulse waveform related to the arterial network; estimating a source pulse based on at least one predetermined feature of the pulse waveform; determining a plurality of characteristics of the pulse waveform based on a relationship between the pulse waveform and the source pulse; and calculating the stiffness index of the arterial network based on the plurality of characteristics of the pulse waveform. An arterial stiffness index measuring device employing the above methodology is also disclosed therein.

Abstract: Systems, methods, and devices of various embodiments enable measurement of blood pressure from an artery. The various embodiments may measure, using a non-interfering arterial measurement sensor, a first change in distension of the artery at a measurement location without interference to an arterial pressure at the measurement location during a series of pulses. A first pulse rate and estimated pulse pressures may be determined from the first change in distension. A coefficient may be determined fitting an exponentially decaying function representing an exponential decay of a portion of a diastolic phase to select ones of the estimated pulse pressures corresponding to the diastolic phase. An absolute blood pressure may be determined by applying the coefficient to a select mathematical model expressing a first relationship between the first change in distension of the artery and the pulse pressure in the artery at the measurement location.

Abstract: A method is provided for determining a central aortic pressure waveform. The method includes: measuring two or more peripheral artery pressure waveforms; analyzing the signals so as to extract common features in the measured waveforms; and determining an absolute central aortic pressure waveform based on the common features.

Abstract: A blood pressure estimating method includes measuring a biosignal including pulse wave information of a user, determining a calibration method for a blood pressure estimation model, calibrating the blood pressure estimation model using the determined calibration method, and estimating a blood pressure of the user from the biosignal using the calibrated blood pressure estimation model.

Abstract: The disclosure describes an electronic stethoscope system that automatically detects coronary artery disease in patients. The system uses an electronic stethoscope to record acoustic data from the fourth left intercostal space of a patient. A processing technique is then applied in order to filter the data and produce Fast Fourier Transform (FFT) data of magnitude versus frequency. If a bell curve is identified in the data between a predefined frequency range (e.g., 50 and 80 Hz) with a peak magnitude of greater than a predefined threshold (e.g., 2.5 units), the system automatically provides an output indicating that the patient is likely to have 50 to 99 percent stenosis of the coronary artery. If no bell curve is present, the patient may have artery stenosis of less than 50 percent. An interface module may be used to transfer diagnosis information to the stethoscope and data to a general purpose computer.

Abstract: Acoustic tags and a process for fabrication are disclosed for identifying and tracking various hosts including inanimate and animate objects in up to three dimensions. The acoustic tags may be powered by a single power source. Tags can have an operation lifetime of up to 90 days or longer at a transmission rate of 3 seconds. The acoustic tags have an enhanced signal range that enhances detection probability when tracking the hosts.

Abstract: An electronic device and method are disclosed, the electronic device including a variable detection module operable in a plurality of modes, each of the plurality of modes configuring the variable detection module to detect a different external signal; and a controller. The controller may implement the method, including operating the variable detection module in one of the plurality of operating modes, and executing a function of the electronic device in response to a signal detected by the variable detection module.

Abstract: A fiber optic biodiagnostic sensor system includes a blood vessel insertable pressure distribution measurement device to be inserted in vivo into a blood vessel to measure distributions of temperature and pressure of an object to be measured along a predetermined site, the device having an SM optical fiber deformable by temperature and strain, a structural member being in contact with a portion of the optical fiber to convert pressure of the to-be-measured object to strain of the optical fiber; and an outer layer converting the optical fiber and the structural member. The sensor system further includes a measurement unit emitting laser light into the SM optical fiber, detecting a frequency shift produced in the scattered light, and calculating a blood pressure at a given position of the optical fiber from a pressure change and a strain change of the SM optical fiber that are calculated from the frequency shift.

Abstract: Systems and methods are provided for detecting held breath events. A physiological signal, such as a photoplethysmograph (PPG) signal, is processed to extract respiration-related morphology metric signals. The morphology signals are analyzed to determine when a patient's breath is being held.

Abstract: The present invention proposes a method and a device for long-term monitoring of the arterial vascular stiffness and vascular calcification on a particular patient, wherein a characteristic variable for the arterial vascular stiffness is determined exclusively from the shape and/or the characteristic of at least one pressure pulse wave caused by a cardiac contraction as a function of time and is stored as a time series for the particular patient. In particularly preferred embodiments, the characteristic variable is represented as a trend and serves the physician as a basis for long-term monitoring of the arterial vascular stiffness.

Abstract: The circulatory dynamics measurement apparatus comprises: a blood pressure-computing unit, which calculates the maximum blood pressure value (SYS); a vascular sclerosis-computing unit, which calculates the vascular sclerosis index (VSI); and a display unit for displaying a graph having a horizontal axis that represents the maximum blood pressure and a vertical axis that represents the vascular sclerosis index. The display unit displays the position determined by the calculated maximum blood pressure value and the calculated vascular sclerosis index in the plotting area of the graph.

Abstract: A stand-on physiological sensor (e.g. floormat) measures vital signs and various hemodynamic parameters, including blood pressure and ECG waveforms. The sensor is similar in configuration to a common bathroom scale and includes electrodes that take electrical measurements from a patient's feet to generate bioimpedance waveforms, which are analyzed digitally to extract various other parameters, as well as a cuff-type blood pressure system that takes physical blood pressure measurements at one of the patient's feet. Blood pressure can also be calculated/derived from the bioimpedance waveforms. Measured parameters are transmitted wirelessly to facilitate remote monitoring of the patient for heart failure, chronic heart failure, end-stage renal disease, cardiac arrhythmias, and other degenerative diseases.