A monitoring system a user activity sensor to determine patterns of activity based upon the user activity occurring over time.

A method and an apparatus for measuring a time-varying change in an amount of blood in a tissue include exciting a fluorescence agent in the blood, acquiring a time-varying light intensity signal during a pulsatile flow of the blood through the tissue volume, the pulsatile flow having a systolic and a diastolic phase resembling a conventional photoplethysmogram, and processing the acquired signal by applying a modified Beer-Lambert law to obtain the measurement of the time-varying change in the amount of blood in the tissue volume. The instantaneous molar concentration of the fluorescence agent is determined by utilizing a concentration-mediated change in a fluorescence emission spectrum of the fluorescence agent.

A biological fluid collection device that includes a housing and a cartridge that is removably receivable within a portion of the housing is disclosed. The biological fluid collection device of the present disclosure allows for collection of capillary blood from a finger stick and provides a closed system that reduces the exposure of a blood sample. In one embodiment, a cartridge of the present disclosure also provides fast mixing of a blood sample with a sample stabilizer. In another embodiment, a cartridge of the present disclosure provides automatic plasma separation of the blood sample. Advantageously, once the cartridge is filled with a sample aid removed from the housing, the cartridge can be used for a variety of important purposes.

Techniques are disclosed for adjusting a transmission frequency of a physiological monitoring unit, which includes a capture unit and a receiver unit. The capture unit and the receiver unit are wirelessly connected together and are configured to exchange data on the transmission frequency by means of a programming unit.

A ring for photoplethysmographic sensing performs transmissive PPG and/or reflective PPG. It can enable lower power consumption, higher fidelity, and/or greater versatility to different use cases and users' specificities. The PPG system takes advantage of sensor spatial diversity to enhance the quality and the reliability of the PPG measurements in smart rings, for example. It can also perform user identification.

The present disclosure relates to technology for estimating bio-information by using a foldable electronic device. The foldable electronic device includes a main body part, having a first main body and a second main body, configured to fold along a folding line; a first sensor provided on the first main body, and configured to obtain a contact image of an object of a user; a second sensor provided on the first main body, and configured to measure a degree of folding of the main body part; and a processor configured to estimate bio-information of the user, based on the contact image of the object and the degree of folding.

A detection device includes an annular substrate, optical sensors annularly arranged along the substrate, and a plurality of light sources annularly arranged correspondingly to the arrangement of the optical sensors.

Embodiments of the presently described device, system and method support upper extremity (UE) therapy through tracking the human hand. The system can include a hand-wearable sensor mounting system with hand-wearable components and a movement interpretation circuit. The device can include a hand-wearable component comprising a hook, and a sensing transducer comprising a clip, wherein the clip is detachably securable to the hook. In embodiments, one or more sensing transducers are translationally and rotationally restricted when secured to the hand-wearable components.

A smart ring includes a curved housing having a U-shape interior storing components including: a curved battery approximately conforming to the curved housing, a semi-flexible PCB approximately conforming to the curved housing and having mounted thereon: a motion sensor for generating motion data from physical perturbations of the smart ring, a memory for storing executable instructions, a transceiver for sending data to a client computer, a temperature sensor, and a processor for receiving motion data and performing executable instructions in response thereto, and a potting material disposed in the interior, forming an interior wall of the smart ring, wherein the potting material encapsulates the components and is substantially transparent to visible light, infrared light, and / or ultraviolet light.

Disclosed herein are systems, assemblies and methods of a sensor system that applies a correction factor to spectra information based on a force associated with a touch from a person applying the touch to the sensor system.