The invention disclosed herein is a device having an analyte sensor, having a working electrode and a membrane disposed over the electrode and methods of making the device. The multilayered membrane is formed by chemically fusing an inner layer of a polyelectrolyte with an outer layer of an ethylenically unsaturated prepolymer through a chain-growth polymerization reaction of an ethylenically unsaturated silicone prepolymer, a hydride silicone prepolymer, a non-silicone ethylenically unsaturated hydrophilic monomer, a filler and a metal catalyst. The silicone composition formed from the reaction mixture restricts diffusion of an analyte through the membrane. More specifically, the membrane formed comprises a restrictive domain that controls the flux of oxygen and glucose through the membrane to the working electrode.

A surface electrode having a first surface and a plurality of electrode elements disposed on the first surface and spaced from each other in a manner so as to be configured to contact a measured surface of an object to be measured; a stretchable wire electrically connecting the plurality of electrode elements; and a stretchable insulator covering a side of the stretchable wire adjacent to the electrode elements.

The present disclosure relates to a device configured to be adhered to the surface of a mammal for recording physiological signals. The device may include a housing enclosing a circuit board and a flexible wing extending from the housing. The device may include an electrode coupled to the flexible wing and an electrical trace for transmitting an electrical signal between the electrode and the circuit board. The electrical trace may have an insulator with a conductive material and resistors printed on the surface of the insulator. The trace layer may include conductive vias for transmitting the signal from a bottom of the trace layer to a top of the trace layer. The housing may include a battery having a battery terminal connector configured to provide electrical access to both terminals on a single side of the battery. The housing may include a floating trigger button.

A monitoring device for monitoring of vital signs of a living organism comprises at least two electrode pins for receiving an electrical activity of the living organism and an optical sensor for sensing a pulse of the living organism, wherein the monitoring device has a compact form and the at least two electrode pins and the optical sensor are integrated in the monitoring device.

A semi-dry electrode for a neural sensor net. The electrode may comprise an electrolyte storage medium for storing electrolyte, a body portion including an electrolyte reservoir for receiving the bottom surface of the electrolyte storage medium, a cap connected to the body portion for at least partially covering the top surface of the electrolyte storage medium so as to prevent contact between the top surface of the electrolyte storage medium and a person's finger(s), and a vibrating device for vibrating the electrode so as to release electrolyte from the electrolyte storage medium out through the body portion.

The present invention provides a measuring method for prolonging a usage lifetime of a micro biosensor implanted subcutaneously to measure a physiological signal associated with an analyte. The micro biosensor includes a working electrode and a counter electrode, wherein the counter electrode includes silver and a silver halide having an initial amount. The method includes cyclic steps of: applying a measurement voltage to drive the working electrode to measure the physiological signal, where the silver halide is consumed by a specific amount; stopping applying the measurement voltage; and whenever the physiological parameter is obtained, applying a replenishment voltage to drive the counter electrode, thereby the silver halide of a replenishment amount being replenished to the counter electrode, wherein a guarding value of a sum of the replenishment amount and the initial amount subtracting the consumption amount is controlled within a range of the initial amount plus or minus a specific value.

The disclosure extends to systems and devices for determining and maintaining a consistent ground and ground saturation resistance that include a device that includes a grip element and bioelectrical grounding segments, which may be disposed about the grip element on the grounding device.

A semi-dry electrode for recording an electroencephalogram, includes an outer membrane that forms an electrode contact surface with a predetermined area contacting a scalp; an electrode body that is connected to an edge of the outer membrane and forms an internal space into which an electrolyte solution is filled; and an electrical conductor sensor that is located inside the electrode body and measures an ion current transmitted through the outer membrane. The outer membrane has a plurality of fine holes and holes that are larger than the fine holes.

In some embodiments, a system includes a patch assembly and a frame. The patch assembly includes an adhesive portion. The patch assembly is configured to be coupled to a surface of a user via the adhesive portion. The patch assembly has a first patch configuration and a second patch configuration. The frame defines an opening. The patch assembly is configured to be disposed within the opening. The frame has a first frame configuration in which the frame is coupled to the patch assembly via a group of connectors such that the frame prevents the patch assembly from transitioning between the first patch configuration and the second patch configuration. The frame has a second frame configuration in which the group of connectors are broken and the frame is separated from the patch assembly.

A biosensor for measuring a physiological signal representative of a physiological parameter associated with an analyte is described. The biosensor includes a working electrode and a counter electrode. The counter electrode including a silver and a silver halide having an initial amount, wherein the initial amount is determined by the following steps of defining a required consumption range of the silver halide during at least one of the measurement periods performed by the biosensor; and determining the initial amount based on a sum of an upper limit of the required consumption range and a buffer amount, so that a required replenishment amount range of the silver halide during the replenishment period is controlled to be sufficient to maintain an amount of the silver halide within a safe storage range.