EP0097436A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Bioelectrode
Assignee: 3M Co
•
Filing: 1983-05-26
•
Granted: —
•
Expires: 2003-05-26
Abstract
Abstract 0 An improved biomedical electrode is disclosed which is especially useful for delivering current to the body. The electrode comprises a non-metallic electrically-conductive film which is a barrier to the migration of metallic ions located between a thin, conformable, electrically-conductive metal layer and the skin. An extensible backing overlying the metal layer and means for conducting the metal layer to an electromedical device are also essential features of the invention. The electrode is preferably disposable and further comprises an electrically-conductive pressure-sensitive adhesive as an interfacing material between the non-metallic film and the skin.
Inventors
- 👤 Charles W. Minnesota Mining And Manufact. Roberts
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 07:52
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/0404; A61N1/0408; A61N1/0428; A61N1/0456; A61N1/0472; A61N1/0492; A61N1/048
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
104 words
A biomedical electrode comprising an electrically-conductive metallic layer and means for electrically connecting said metallic layer to an electromedical device characterized in that said electrode further comprises a flexible, electrically-conductive, non-metallic film which is a barrier to the migration of metallic ions having a top surface and a bottom surface; and said electrically-conductive metallic layer overlies and is in electrical contact with a substantial portion of said top surface of said film, and further characterized in that an extensible, electrically insulating backing overlies and is adhered to a substantial portion of said metallic layer on the side opposite to the side contacting said film.
Claim 2
Dependent Claim
104 words
A biomedical electrode comprising an electrically-conductive metallic layer and means for electrically connecting said metallic layer to an electromedical device characterized in that said electrode further comprises a flexible, electrically-conductive, non-metallic film which is a barrier to the migration of metallic ions having a top surface and a bottom surface; and said electrically-conductive metallic layer overlies and is in electrical contact with a substantial portion of said top surface of said film, and further characterized in that an extensible, electrically insulating backing overlies and is adhered to a substantial portion of said metallic layer on the side opposite to the side contacting said film.
Claim 3
Dependent Claim
24 words
The biomedical electrode of claim 1 further characterized by a coating of a conformable, electrically-conductive interfacing material on said bottom surface of said film.
Claim 4
Dependent Claim
19 words
The biomedical electrode of claim 2 further characterized in that said interfacing material is an electrically-conductive pressure sensitive adhesive.
Claim 5
Dependent Claim
22 words
The biomedical electrode of claim 3 further characterized by a release liner adhered to the exposed surface of said pressure sensitive adhesive.
Claim 6
Dependent Claim
28 words
The biomedical electrode of claim 1 Lurther characterized in that said film comprises a thermoplastic resin containing an effective amount of electrically-conductive carbon to render said resin electrically-conductive.
Claim 7
Dependent Claim
16 words
The biomedical electrode of claim 5 further characterized in that said resin is ethylene vinyl acetate.
Claim 8
Dependent Claim
16 words
The biomedical electrode of claim 5 further characterized in that said electrically-conductive carbon is carbon black.
Claim 9
Dependent Claim
23 words
The biomedical electrode of claim 7 further characterized in that said carbon black comprises between about 25 and 30 percent of said film.
Claim 10
Dependent Claim
15 words
The biomedical electrode of claim 1 further characterized in that said metallic layer comprises silver.
Claim 11
Dependent Claim
21 words
The biomedical electrode of claim 9 further characterized in that said silver is vapor-deposited on said top surface of said film.
Claim 12
Dependent Claim
19 words
ll. The biomedical electrode of claim 1 further characterized in that said backing comprises a polyvinyl chloride foam tape.
Claim 13
Dependent Claim
32 words
The biomedical electrode of claim 1 further characterized in that said backing comprises a thermoplastic polyurethane film having a layer of pressure sensitive adhesive on the side thereof contacting said metallic layer.
Claim 14
Dependent Claim
42 words
The biomedical electrode of claim 1 further characterized in that said means for electrically connecting said metal layer to an electromedical device is an electrically conductive wire sandwiched between said metal layer and said backing in electrical contact with said metal layer.
Claim 15
Dependent Claim
82 words
The biomedical electrode of claim 1 further characterized in that said means for electrically connecting said metal layer to an electromedical device is a one-piece electrically- conductive connector sandwiched between said metal layer and said backing with at least one end thereof exposed, said connector having a substantially flat lower surface overlying a portion of said metal layer and in electrical contact therewith and a female receptacle in said exposed end for receiving an electrical plug for attachment to said electromedical device.
Claim 16
Dependent Claim
27 words
The biomedical electrode of claim 3 further characterized in that said electrically-conductive pressure-sensitive adhesive is a copolymer of n-butyl acrylate and acrylic acid neutralized with methyl diethanolamine.
Claim 17
Dependent Claim
23 words
The biomedical electrode of claim 3 further characterized by a drug contained in said interfacing material capable of iontophoretic delivery to the skin.
References Cited (Backward Citations)
GB410009A
Cited
US3976055A
Cited
FR2291732A1
Cited
DE3006472A1
Cited
GB2045088A
Cited
US4248247A
Cited
EP0029297A1
Cited
EP0060451A1
Cited
DE3215960A1
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.