Systems and methods for a medical device are provided. The handheld medical device includes a housing including a front and rear side. A diaphragm is located in the center of the rear side of the housing. Three or less rear electrodes, configured to collect electromagnetic signals from the chest region of a patient, are located in a semi-circular in shape that encircles the diaphragm on the rear side of the housing. Two front electrodes located on the front side of the housing collect signals from the left and right index fingers of the patient. A screen is located between the two front electrodes. The device may include a transmitter, in some cases a Bluetooth module, for coupling the medical device to a user device. The user device includes an application that receives the signals and performs analysis on them. The five electrode inputs are used to calculate seven ECG channels.

At least one example embodiment relates to a measuring system for measuring bioelectrical signals of a patient, the measuring system comprising a sensor electrode, and a mechanical mounting for the sensor electrode, the mechanical mounting being at least partially compressible and comprising a frame structure and a supporting structure. The mechanical mounting is fastened to a substrate of the measuring system and supports the sensor electrode against the substrate, the supporting structure is arranged beneath the sensor electrode, the frame structure at least partially surrounds the supporting structure, and the supporting structure is configured higher than the frame structure.

At least one example embodiment relates to a measuring system for measuring bioelectrical signals of a patient, the measuring system comprising a sensor electrode, and a mechanical mounting for the sensor electrode, the mechanical mounting being at least partially compressible and comprising a frame structure and a supporting structure. The mechanical mounting is fastened to a substrate of the measuring system and supports the sensor electrode against the substrate, the supporting structure is arranged beneath the sensor electrode, the frame structure at least partially surrounds the supporting structure, and the supporting structure is configured higher than the frame structure.

Disclosed is a sandwich assembly containing a thin film electrode array for use with high density electrodes. To minimize the volume required by the associated electronics, the electrode array and integrated circuits are sandwiched over a Printed Circuit Board (PCB), which may have other integrated circuits on an opposite side. Among other things, the disclosed apparatus, system, and method improve over previous systems by providing holes and vias that facilitate communication between a custom chip above the PCB and a field-programmable gate array (FPGA) below. The thin film electrode array can be fastened by bucking a pillar of stacked gold or other metal balls to rivet the thin film flex circuit. The system can include a thin film array having embedded wire traces and holes, a PCB having vias aligned with the holes, chips including an analog-to-digital converter (ADC) sandwiching the thin film, and solder connections from the chips through the holes to the vias.

A flexible implantable electrode arrangement includes an electrically insulating carrier structure of a first polymer material, an electrically conductive layer, and an electrically insulating cover layer of a second polymer material. The electrically conductive layer includes an electrically conductive carbon fiber layer. The electrically conductive layer integrally forms an implantable electrode, a conductor track connected to the implantable electrode, and a contact pad. The electrically insulating cover layer at least partially covers the electrically conductive layer.

A flexible implantable electrode arrangement includes an electrically insulating carrier structure of a first polymer material, an electrically conductive layer, and an electrically insulating cover layer of a second polymer material. The electrically conductive layer includes an electrically conductive carbon fiber layer. The electrically conductive layer integrally forms an implantable electrode, a conductor track connected to the implantable electrode, and a contact pad. The electrically insulating cover layer at least partially covers the electrically conductive layer.

A microelectrode probe for implantation into soft tissue comprises an envelope of flexible polymer material divided by a wall into a distal and a proximal compartment filled with matrices of biocompatible material dissolvable or degradable in aqueous body fluid and comprising a centrally disposed electrically conducting core penetrating the wall and attached to it. The core is insulated at its proximal portion from which it extends to a holder for attachment to a tissue different from said soft tissue. The envelope and the core extending distally from the holder are embedded in an additional matrix of similar kind. Also disclosed is method for its manufacture, an array comprising two or more microelectrode probes and a microelectrode probe for incorporation into the array as well as method for the manufacture of the array.

A microelectrode probe for implantation into soft tissue comprises an envelope of flexible polymer material divided by a wall into a distal and a proximal compartment filled with matrices of biocompatible material dissolvable or degradable in aqueous body fluid and comprising a centrally disposed electrically conducting core penetrating the wall and attached to it. The core is insulated at its proximal portion from which it extends to a holder for attachment to a tissue different from said soft tissue. The envelope and the core extending distally from the holder are embedded in an additional matrix of similar kind. Also disclosed is method for its manufacture, an array comprising two or more microelectrode probes and a microelectrode probe for incorporation into the array as well as method for the manufacture of the array.

This fiber net includes a fiber net having an electrode part, in which a fiber constituting the electrode part includes a core material, a relaxation layer which covers at least a part of a surface of the core material and contains a material having a higher Young's modulus than a material forming the core material, and a conductive layer which covers a surface of the relaxation layer on a side opposite to the core material side.

A bio-electrode composition contains particles having surfaces with an N-carbonyl sulfonamide salt shown by the following general formula (1). R.sup.1 represents a linear, branched, or cyclic alkylene group having 1 to 20 carbon atoms and optionally having an aromatic group, ether group, or ester group, or an arylene group having 6 to 10 carbon atoms. Rf represents a linear, branched, or cyclic alkyl group having 1 to 4 carbon atoms, or an aryl group having 6 to 10 carbon atoms, and optionally has a fluorine atom. M.sup.+ represents an ion selected from the group consisting of lithium, sodium, potassium, and silver ions. This invention provides a bio-electrode composition capable of forming a living body contact layer for a bio-electrode which is excellent in electric conductivity and biocompatibility, light-weight, and manufacturable at low cost, and prevents significant reduction in electric conductivity even when wetted with water or dried.

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