The present invention discloses a reflectance type PPG-based physiological sensing system with a close proximity triangulation approach toward robustly measuring several physiological parameters including, but is not limited to, heart rate, breathing rate, blood oxygen saturation and pulse wave velocity.

An optoelectronic apparatus for measuring organic tissue is attached with the organic tissue. A semiconductor optic radiation source outputs repeatedly infrared pulses of toward the tissue. An array of single-photon avalanche diodes is directed toward the tissue and detects photons of the optical pulses that have interacted with the tissue. A timing unit determines time-of-flights of photons of each of the optical pulses within a temporal measurement range after an output of each of the optical pulses. A data processing unit estimates a physiological state of the tissue within at least one time window shorter than the temporal measurement range based on at least one of the following: a number of the detections within the time window and a distribution of the detections within the time window.

In one embodiment the invention provides a process of capturing a biopotential signal at a surface of a body using a sensor receiver which forms a first signal connection the body wherein one or more parameters of impedance of the first signal connection are unknown. The process comprises receiving the biopotential signal at an output of a first signal channel having a first transfer function which is dependent on the one of more unknown first impedance parameters. The process also comprises receiving the biopotential signal at an output of a second signal channel having a second transfer function dependent on the one of more unknown first impedance parameters. The process also comprises deriving a set of relations for the biopotential signal. The set of relations is defined dependent on the transfer function of the first signal channel, the transfer function of the second signal channel, and outputs of the first and second signal channels; and solving the set of relations to determine the captured biopotential signal.

Novel tools and techniques for wearable device vital signs monitoring are provided. An apparatus system includes a remote device, and a wearable device in communication with the remote device. The wearable device includes a polychromatic light source, a spectral sensor, a processor, and a non-transitory computer readable medium comprising instructions executable by the processor. The wearable device is configured to illuminate, via the polychromatic light source, a perfused tissue of the body of the patient, receive, via the spectral sensor, a resultant signal from the body of the patient, and determine a spectral property of the resultant signal. The wearable device may then determine a vital sign of the patient based, at least in part, on a lookup table and the spectral property of the resultant signal.

The present disclosure relates to systems and methods for determining the renal glomerular filtration rate or assessing the renal function in a patient in need thereof. The system includes a computing device, a power supply, one or more sensors, and at least one tracer agent that fluoresces when exposed to electromagnetic radiation. The electromagnetic radiation is detected using the sensors, and the rate in which the fluorescence decreases in the patient is used to calculate the renal glomerular filtration rate in the patient.

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 include a motion sensor that is used to determine a motion status of the user. Based upon the motion status of the user, the system may activate light emitters on the wearable strap to determine the heart rate of the user.

A wearable radio frequency receiver device is provided, which includes a receiver antenna configured to receive an interrogation signal from a transmitter. The receiver device further includes a sensor coupled to the receiver antenna and configured to receive a physiological input from a user wearing the device and generate a sensor signal based on the physiological input, and a modulator configured to perform direct modulation on the received interrogation signal based on the sensor signal to encode the physiological input in the directly modulated interrogation signal. The receiver antenna may be configured to reflect at least a portion of the directly modulated interrogation signal as backscatter radiation. A transceiver including a transceiver antenna may be provided to receive the directly modulated interrogation signal, and the modulation receiver may be configured to process the directly modulated interrogation signal and output a decoded physiological input.

A newborn heart rate monitor is disclosed comprising a sensor integrated into a clamp configured to clamp onto the umbilical cord of a newborn infant. The sensor is configured to detect radial pulsation of the umbilical cord and produce a corresponding electrical signal which can be processed by a processor to calculate the heartbeat of the newborn infant. The heartbeat can be displayed visually or audibly or both. A second reference sensor can be included to detect environmental noise and the processor can be configured to use the detected environmental noise to filter noise from the detected heartbeat. Additional filtering, processing, and alert algorithms can be included for processing and analyzing the detected heartbeat data.

A physiological parameter sensing system provides a sensing device for measuring a physiological parameter of a subject. The sensing device includes various components that operate as heat sources, which can influence the operation of sensors in the device. The sensing device includes a heat isolation mechanism that thermally isolates the sensors from the heat sources.

Embodiments of the present disclosure help to synchronize multiple video segments of an actor or actors performing athletic maneuvers. Among other things, various embodiments help provide a side-by-side visual comparison of athletic maneuvers.