US4391278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape electrode
Assignee: Medtronic Inc
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Filing: 1980-02-14
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Granted: 1983-07-05
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Expires: 2000-02-14
Abstract
Abstract An improved medical electrode particularly adaptable to tape-like configurations for use in sensing and stimulation applications in which the electrode is applied to the skin. An essential electrode component comprises a mixture of a polymerized form of 2-acrylamido-2-methylpropanesulfonic acid or one of its salts with water and/or an alcohol. The mixture possesses electrically conductive properties, flexible properties and adhesive properties particularly lending itself to skin contact and adhesion.
Inventors
- 👤 Patrick T. Cahalan
- 👤 Arthur J. Coury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:35
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/25; A61B5/251; A61B5/257; A61B5/259; C; C09; C09J; C09J133/00; C09J133/24; C09J133/26; C08; C08L; C08L2666/00; C08L2666/28; C08L2666/34
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
93 words
A skin electrode consisting essentially of: an adhesive electrically conductive skin-contacting member consisting essentially of a polymer component selected from the group consisting of polymerized 2-acrylamido-2-methylpropanesulfonic acid, its salts, copolymers of the acid, copolymers of the salts of the acid, and mixtures thereof, and a second component selected from the group consisting of water, alcohols and mixtures thereof, sufficient relative amounts of the polymer component and the second component being included to provide adhesiveness and flexibility to the member, and electrical contact means connected to the conductive member for establishing electrical contact therewith.
Claim 2
Dependent Claim
93 words
A skin electrode consisting essentially of: an adhesive electrically conductive skin-contacting member consisting essentially of a polymer component selected from the group consisting of polymerized 2-acrylamido-2-methylpropanesulfonic acid, its salts, copolymers of the acid, copolymers of the salts of the acid, and mixtures thereof, and a second component selected from the group consisting of water, alcohols and mixtures thereof, sufficient relative amounts of the polymer component and the second component being included to provide adhesiveness and flexibility to the member, and electrical contact means connected to the conductive member for establishing electrical contact therewith.
Claim 3
Dependent Claim
11 words
The skin electrode of claim 1 wherein the alcohol is glycerol.
Claim 4
Dependent Claim
12 words
The skin electrode of claim 1 wherein the alcohol is propylene glycol.
Claim 5
Dependent Claim
108 words
A skin electrode for establishing electrical connection to skin, the electrode consisting essentially of: an electrically conductive current distribution member; electrical terminal means attached to the member for establishing electrical contact therewith, and a skin-contacting substrate attached to the current distribution member and in electrical contact therewith, the substrate having adhesive, electrically conductive and flexible properties for adhering to the skin and consisting essentially of a polymer component selected from the group consisting of polymerized 2-acrylamido-2-methylpropanesulfonic acid, its salts, copolymers of the acid, copolymers of the salts of the acid and mixtures thereof and a second component selected from the group consisting of water, alcohols and mixtures thereof.
Claim 6
Dependent Claim
108 words
A skin electrode for establishing electrical connection to skin, the electrode consisting essentially of: an electrically conductive current distribution member; electrical terminal means attached to the member for establishing electrical contact therewith, and a skin-contacting substrate attached to the current distribution member and in electrical contact therewith, the substrate having adhesive, electrically conductive and flexible properties for adhering to the skin and consisting essentially of a polymer component selected from the group consisting of polymerized 2-acrylamido-2-methylpropanesulfonic acid, its salts, copolymers of the acid, copolymers of the salts of the acid and mixtures thereof and a second component selected from the group consisting of water, alcohols and mixtures thereof.
Claim 7
Dependent Claim
27 words
The skin electrode according to claim 4 wherein the substrate comprises about 25% to about 65% by weight polymer and about 75% to 35% by weight water.
Claim 8
Dependent Claim
26 words
The skin electrode according to claim 4 wherein the substrate comprises about 30% to 70% by weight polymer and about 70% to 30% by weight alcohol.
Claim 9
Dependent Claim
30 words
The skin electrode according to claim 4 wherein the substrate comprises about 30% to 70% by weight polymer, about 70% to 30% by weight water plus alcohol, in any proportion.
Claim 10
Dependent Claim
12 words
The skin electrode according to claim 6 wherein the alcohol is glycerol.
Claim 11
Dependent Claim
12 words
The skin electrode according to claim 7 wherein the alcohol is glycerol.
Claim 12
Dependent Claim
23 words
The skin electrode according to claim 4 wherein the substrate is in sheet form, ranging in thickness from about 0.025 to 0.25 inches.
Claim 13
Dependent Claim
14 words
The skin electrode according to claim 4, wherein the substrate includes additional thickening constituents.
Claim 14
Dependent Claim
15 words
The skin electrode according to claim 4, wherein the substrate includes additional conductivity improving constituents.
Claim 15
Dependent Claim
15 words
The skin electrode according to claim 12 wherein the conductivity improving constituents comprise soluble salts.
Claim 16
Dependent Claim
12 words
The skin electrode according to claim 13 wherein the salts are chlorides.
Claim 17
Dependent Claim
12 words
The skin electrode according to claim 14 wherein the salt is NaCl.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-04 | 1987-01-03 | 1987-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-04 | 1991-01-03 | 1991-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-04 | 1995-01-03 | 1995-07-05 | $7700.00 | Window Closed / Lapsed |