US4166453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Body electrodes
Assignee: Cardio Technology Ltd
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Filing: 1978-01-17
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Granted: 1979-09-04
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Expires: 1998-01-17
Abstract
Abstract An electrode suitable for use in conducting electrical signals from the skin of a living animal, the electrode having a conducting member constituted by an electrically conducting plastics material and an electrically conducting chloride gel carried by a porous foam disc for contact with the skin, the porous foam disc being spaced from the conducting member by a non-electrically conducting element which is loaded with silver to provide electrical connection between the gel and the member.
Inventors
- 👤 Brian McClelland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:44
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/25; A61B5/263; A61B5/265; A61B5/266; A61B5/268
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
152 words
An electrode which is suitable for use in conducting electrical signals from the skin of a living animal, the said electrode including a member to which electrical connection can be made, the member being constituted by an electrically conducting plastics material, a first element carrying an electrically conducting gel, means for holding said first element to allow said first element to be positioned on the skin of an animal with the gel in electrical contact with the said skin and a silver loaded element of nonelectrically conducting material positioned between said first element and said member to provide a physical barrier between said member and first element to substantially prevent gel from reaching said member and an electrical connection via the silver loading between the gel and the member, whereby an electrical connection can be made between the skin and the member and the possibility of developing an off-set potential is reduced.
Claim 2
Dependent Claim
152 words
An electrode which is suitable for use in conducting electrical signals from the skin of a living animal, the said electrode including a member to which electrical connection can be made, the member being constituted by an electrically conducting plastics material, a first element carrying an electrically conducting gel, means for holding said first element to allow said first element to be positioned on the skin of an animal with the gel in electrical contact with the said skin and a silver loaded element of nonelectrically conducting material positioned between said first element and said member to provide a physical barrier between said member and first element to substantially prevent gel from reaching said member and an electrical connection via the silver loading between the gel and the member, whereby an electrical connection can be made between the skin and the member and the possibility of developing an off-set potential is reduced.
Claim 3
Dependent Claim
41 words
An electrode as claimed in claim 1 wherein said holding means includes a second annular member, the first mentioned and second members defining a cavity and the silver loaded element and the element carrying the gel being housed in the cavity.
Claim 4
Dependent Claim
23 words
An electrode as claimed in claim 1 wherein the electrically conducting plastics material is constituted by a carbon loaded ethylene vinyl acetate co-polymer.
Claim 5
Dependent Claim
19 words
An electrode as claimed in claim 1 wherein the silver loaded element is constituted by a non-woven fabric material.
Claim 6
Dependent Claim
17 words
An electrode as in claim 1, wherein said silver loaded element is substantially impervious to said gel.
References Cited (Backward Citations)
US3534727A
Cited
US3496929A
Cited
US3508541A
Cited
US3542010A
Cited
US3602216A
Cited
US3659614A
Cited
US3882853A
Cited
US4040412A
Cited
US3989036A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-09-03 | 1983-03-05 | 1983-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-03 | 1987-03-05 | 1987-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-03 | 1991-03-05 | 1991-09-04 | $7700.00 | Window Closed / Lapsed |