US 4,763,659 A · Dry electrode system for detection of biopotentials

Abstract

A dry electrode system for the detection of biopotentials existing on the surface of the skin of a living body, including a dry electrode pad with a resilient conductive pad adhering to at least one adhesive pad or otherwise opposed adhesive surfaces, one of which is adapted to engage the skin of the living body. The dry electrode pad makes electrical connection to an amplifying circuit which transmits a biopotential derived from the conductive pad to a monitor. The amplifying circuit includes a conductive input contact for making electrical contact to the conductive pad, a lead amplifier having an input coupled to the input contact, and a voltage driven shield coupled to the output of the lead amplifier and surrounding portions of the input contact not in engagement with the dry electrode pad. In a preferred embodiment, conductive adhesive layers are applied to opposed sides of a conductive foam pad to construct the dry electrode pad.

Claims74

Dependent claims

A dry electrode system for the detection of biopotentials existing on the surface of the skin of a living body, comprising:

a conductive dry electrode pad having opposed sides, one of which is adapted to contact said skin, comprising a resilient conductive pad having opposed sides, and adhesive means comprising first and second conductive adhesive layers applied to opposed sides of said conductive pad said first adhesive layer adapted to adhere said conductive pad to said skin;
and
an amplifying circuit connected to the other side of said dry electrode pad by means of said second adhesive layer for amplifying a biopotential transmitted via said dry electrode pad to said amplifying circuit.

A dry electrode system for the detection of biopotentials existing on the surface of the skin of a living body, comprising:

a conductive dry electrode pad comprising a resilient conductive pad and having opposed sides, one of which is adapted to contact the skin of said living body, and adhesive means, having first and second adhesive layers, at least said first adhesive layer being conductive and adapted to adhere said conductive pad to said skin;
and
an amplifying circuit connected to the other side of said dry electrode pad for amplifying a biopotential transmitted via said dry electrode pad to said amplifying circuit;
wherein said adhesive means comprises:
said conductive first adhesive layer applied to said one side of said resilient conductive pad, and
said second adhesive layer being an insulative adhesive layer applied to selected portions of the other side of said resilient conductive pad, said conductive first adhesive layer adapted to adhesively engage the skin and said insulative second adhesive layer adhesively engaging the amplifying circuit with said resilient conductive pad in contact with said amplifying circuit.

3 more elements

Dependencies are inferred from the claim text.

Dry electrode system for detection of biopotentials

Life of this patent

Dry electrode system for detection of biopotentials

Life of this patent

Abstract

Claims74