According to one embodiment of the present disclosure, a biometric sensor includes a flexible substrate, a first light-emitting part disposed on one side of the flexible substrate to output first light toward the body, a second light-emitting part disposed on one side of the flexible substrate to output second light different from the first light toward the body, an elastomer disposed on one side of the flexible substrate in a shape surrounding the first light-emitting part and the second light-emitting part, and a light-receiving part disposed on the other side of the flexible substrate to receive third light corresponding to the first light and fourth light corresponding to the second light.

Disclosed are an implantable sensor driven by an alignment key, an implantable device comprising the implantable sensor, and a biometric data measurement system comprising the implantable device. The implantable device according to the present embodiment may comprise an implantable sensor forming a magnetic dipole moment in one direction from the inside to the outside of the body, and may be inserted into the body to measure biometric data by means of the implantable sensor.

The present disclosure provides an electronic device. The electronic device includes a flexible element, and a sensing element adjacent to the flexible element and configured to detect a biosignal. The electronic device also includes an active component in the flexible element and electrically connected with the sensing element. A method of manufacturing an electronic device is also disclosed.

A brainwave signal collecting device includes a main part and an elastic sleeve having a first opening. The main part is installed on the elastic sleeve, and the elastic sleeve can be positioned by suction on a user's head through the first opening after being pressed. The main part is in contact with the head to collect brainwave signals. The brainwave signal collecting device has an elastic sleeve serving as a flexible piece. When the brainwave signal collecting device is worn, the elastic sleeve can be pressed to partly exhaust the air therein so as to be positioned by suction on the head by the first opening of the elastic sleeve, which can improve the comfort of the head in contact with the elastic sleeve; and the position and angle at which the main part contacts the head can be adjusted through the deformation of the elastic sleeve.

Example headsets and electrodes are described herein. Example electrode units described herein include a housing having a cavity defined by an opening in a side of the housing and an electrode. In some such examples, the electrode includes a ring disposed in the opening and an arm, where the arm has a first portion extending outward from the opening away from the housing and a second portion extending from an end of the first portion toward the housing and into the cavity, and the first and second portions connect at a bend.

A surgical instrument is disclosed having an elongated body portion having a proximal end and a distal end. The body portion is formed from a plastically deformable material such that the body portion can be bent between the proximal and distal ends from a first configuration to a second bent configuration and maintains the bent configuration. A flexible circuit having at least a pair of lead wires disposed around the body portion. The pair of lead wires are configured to conform to the bent configuration of the body portion such that they do not break during bending of the body portion. A tracking device adapted to cooperate with a navigation system to track the distal end of the instrument is coupled to the flexible circuit.

This document describes a conformable substrate that includes a hydrogel having adhesion-promoting moieties, said adhesion-promoting moieties comprising one or more catechol groups. The conformable substrate includes an array of microelectrodes bonded to the hydrogel by the adhesion-promoting moieties via the one or more catechol groups. This document also describes a method for transfer printing of an electronic structure to a hydrogel. The method includes the steps of coating a donor substrate with a film of polyacrylic acid, crosslinking the film of polyacrylic acid in a solution comprising divalent ions, patterning a microelectrode array onto the crosslinked film of polyacrylic acid, laminating an adhesive hydrogel substrate onto the donor substrate coated by the crosslinked film of polyacrylic acid comprising the patterned microelectrode array, and separating the crosslinked film of polyacrylic acid from the donor substrate in a monovalent solution.

A method of forming an oral device to measure biological variables includes providing a mold configured to impart a contour of an oral retainer sized to extend about a plurality of teeth. The method includes removing the first layer of the retainer from the mold. The method includes attaching at least one sensor to the retainer, the sensor having a profile and defining a boundary edge. The method includes trimming to form a lip of the first layer of material extending beyond the boundary edge of the at least one sensor component. The method includes attaching the first layer of the retainer and at least one sensor component to the mold, forming a second layer of the retainer with the mold, wherein the first layer of retainer retains the mold contour, and wherein the at least one sensor component is disposed between the first and second layer.

Disclosed herein are improved neural depth probes for detection and stimulation, along with various related improved components, devices, methods, and technologies. More specifically, the devices are layered depth electrodes with at least two layers, with each of the layers containing at least one thin-film trace disposed thereon. Each of the devices can also have a plurality of layers with at least two traces on each layer and contacts coupled to each trace.

A maternal and fetal monitoring device using multiple sensing units is disclosed. The maternal and fetal monitoring device comprises: a processor module and a plurality of sensor modules, wherein each said sensor module comprises: an inertial sensor, a temperature sensor and a first acoustic sensor. After being attached onto a maternal body, each said sensor module collects a body temperature signal, an inertia signal and a sound signal. Subsequently, the processor module determines a maternal body posture by analyzing the inertia signal, determines a maternal physical condition and a fetal physical condition by analyzing the inertial signal, the plurality of first sound signals and the second sound signal, and estimates physiological parameters of the maternal body and a fetus by analyzing the body temperature sensing signal, the plurality of first sound signals, and the second sound signals.