The present embodiments provide systems and methods for, among others, tracking sensor insertion locations in a continuous analyte monitoring system. Data gathered from sensor sessions can be used in different ways, such as providing a user with a suggested rotation of insertion locations, correlating data from a given sensor session with sensor accuracy and/or sensor session length, and providing a user with a suggested next insertion location based upon past sensor accuracy and/or sensor session length at that location.

A method of calibrating a pair of body mounted sensors, the method comprising the steps of: (a) in a baseline position of a joint to be measured, determining a first offset between a measured joint angle and an angle between pair of sensors, one mounted on each side of the joint to be measured, so as to calibrate the sensors; (b) after at least one of the sensors has been removed and reapplied, placing the joint back into the baseline position such that the sensors are in a second configuration relative to each other; and (c) determining a second offset between the measured knee angle and an angle between the pair of sensors in the second configuration in order to recalibrate the sensors such that, in each of the first and second configurations, the same joint angle for the baseline position is reported.

One variation of a method for testing contact quality of electrical-biosignal electrodes includes: outputting a drive signal through a driven electrode, the drive signal comprising an alternating-current component oscillating at a reference frequency and a direct-current component; reading a set of sense signals from a set of sense electrodes at a first time; calculating a first combination of the set of sense signals; calculating a first direct-current value comprising a combination of the first combination and the direct-current component of the drive signal at approximately the first time; and at a second time succeeding the first time, shifting the direct-current component of the drive signal output by the driven electrode to the first direct-current value.

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.

Tissue surface tracking of tissue features is disclosed. First surface imaged features are tracked based on the first and second time spaced images at a first wavelength. Second surface imaged features are tracked based on the first and second time spaced tissue surface images at the second wavelength. Tracking metrics are obtained based on the tracking steps. The tracking steps are combined to provide a combined tracking metric. The combined tracking metric is used in a tissue surface navigation application.

A medical system includes a physiological monitoring system configured to sense a physiological signal and record physiological signal data indicative of the patient's physiological state. The physiological monitoring system including a controller, a storage device, at least one sensor operatively coupled to the controller, and a first communication component. The system includes a mobile device configured to facilitate sensor placement, the mobile device comprising a controller, a display device, and a second communication component configured to facilitate communication between the physiological monitoring system and the mobile device. The controller of the mobile device is configured to provide a graphical user interface (GUI) on the display device, the GUI including information about a proper placement of the at least one sensor, wherein the proper placement is determined based on the physiological signal data.

A kit for transmitting and sensing signals comprises: a multi-connection cable having a plurality of cable connectors at a distal end of the cable for establishing electrical communication between each of the cable connectors and a system for measuring bioimpedance that is connectable to a proximal end of the cable, and a plurality of devices for transmitting and sensing signals. Each device comprises a non-conductive substrate adherable to a skin of a subject, a first and a second electrical contacts printed on the substrate, and a disposable connector. Each disposable connector is connectable to a compatible cable connector of the cable in a manner that a combined thickness of the disposable connector and the compatible cable connector, once connected, is less than 4 mm.

The present invention relates generally to the field of providing personalized health management to users, particularly for users suffering from obesity and obesity-related medical conditions, in order to enhance weight loss through a smart belt that is optimally positioned around the user's waist, wherein the placement is determined at least in part using machine learning techniques on aggregate user data. The invention facilitates weight loss and mindfulness through feedback delivered via the smart belt.

A component analyzing apparatus is provided. The component analyzing apparatus includes: an impedance measurer including: a plurality of electrodes having an electrode width that is determined based on an effective measurement depth for analyzing a component of an analyte and a gap between two electrodes among the plurality of electrodes, and an electrode controller configured to apply a first current to a first electrode and a second electrode among the plurality of electrodes and configured to measure impedance based on a voltage between a third electrode and a fourth electrode; and a processor configured to analyze the component of the analyte based on the impedance measured by the electrode controller.

Embodiments of devices and methods for evaluating tissue are disclosed. In one embodiment, a method for measuring a characteristic of a tissue may include passing a current through the tissue, measuring a signal corresponding to the voltage resulting from passing the current through the tissue, analyzing current passed through the tissue and resulting voltage to determine the electrical characteristics of the tissue; and analyzing the electrical characteristics of the tissue to determine a status of the tissue. Methods for achieving relatively constant sensor application pressure are disclosed.