US3721246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Applicator electrodes with a very thin non-metallic, current distributing layer
Assignee: Cablescan Inc
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Filing: 1970-12-10
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Granted: 1973-03-20
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Expires: 1990-12-10
Abstract
Abstract An improved body contacting electrode having a dry, current distributing, skin contacting layer selectively disposed adjacent a conductive portion thereof to provide a high resistance electrode uniquely arranged to effectively limit and uniformly disperse the current from an electrical source through the skin area adjacent the electrode. The current distributing layer is comprised preferably of conductive particles uniformly distributed in a nonconducting medium such as resin or the like. Means are provided to couple the electrode to an external electrical source and to releasably support said electrode adjacent a preselected area of the body.
Inventors
- 👤 D Landis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:05
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/0404; A61N1/0472; A61N1/0492
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
13 words
An electrode as defined in claim 1 wherein said conductive particles are carbon.
Claim 2
Dependent Claim
14 words
An electrode as defined in claim 1 wherein said insulating material is a resin.
Claim 3
Dependent Claim
19 words
An electrode as defined in claim 1 wherein said second surface of said current distributing portion is substantially smooth.
Claim 4
Dependent Claim
24 words
An electrode as defined in claim 1 further comprising means for releasably supporting said electrode in position adjacent a preselected area of the skin.
Claim 5
Dependent Claim
14 words
An electrode as defined in claim 5 wherein said support means is a strap.
Claim 6
Dependent Claim
215 words
An electrode for coupling an electrical signal to a body through the skin, comprising: a first conductive portion; a second conductive portion adjacent said first conductive portion and spaced therefrom; a current distributing portion surrounding said first and said second conductive portions and having a first surface and a second surface, said first surface of said current distributing portion being disposed in intimate contact with said first and said second conductive portions to provide an equipotential surface at the junctures therebetween, said second surface of said current distributing portion being arranged to be disposed directly adjacent the skin; and means for coupling said first and said second conductive portions to an external electrical source; said current distributing portion comprising a plurality of conductive particles generally uniformly dispersed in an insulating medium and having a generally uniform thickness in the range of from one thousandth to ten thousandths of an inch, said conductive particles comprising an aggregate volume in the range of from 1 per cent to 25 per cent of the aggregate volume of said current distributing portion, to provide a generally uniform transverse resistance throughout the thickness of said current distributing portion whereby electrical current passing between said first and said second current distributing portion surfaces is caused to be substantially uniformly dispersed thereover.
Claim 7
Dependent Claim
13 words
An electrode as defined in claim 7 wherein said conductive particles are carbon.
References Cited (Backward Citations)
US2842136A
Cited
US3566860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |