Patent US3820531A successfully refreshed from Google Patents.
US3820531A
Expired / Lapsed
US
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Medical electrode
Assignee: NDM Acquisition Corp
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Filing: 1973-01-30
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Granted: 1974-06-28
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Expires: 1993-01-30
Abstract
Abstract An electrode for attachment to the skin is made from an adhesively coated, elastic sheet sandwiched between a nonconducting, low profile cup member and a clamp plate fixed in assembled relation by a conductive snap fastener member extending therethrough. Both the cup member and the clamp plate are in the form of cavity washers, the confronting margins of which squeeze the sheet. In use, the cup member cooperates with the skin to form an enclosed cavity for an electrolyte. When pressed against the skin, the elastic sheet resiliently urges the cup member against the skin.
Inventors
- 👤 R Szpur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:49
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/25; A61B5/251
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
126 words
In a medical electrode, low profile, non-conducting, collapse resistant means defining an electrolyte receiving, cup-shaped cavity having mutually spaced open and closed ends, the closed end of said cavity being formed by a relatively rigid base, apertured elastic sheet means connected to said base in overlying relation thereto, said sheet means having a lower surface of said sheet means adjacent and in surrounding relation to said open end of said cavity in surrounding relation to said open end of said cavity, an adhesive on said lower surface, a snap fastener projecting through said base and supported by said base remote from said open end of said cavity, said snap fastener projecting through an aperture in said sheet means, and a removable protective cover for said adhesive.
Claim 2
Dependent Claim
126 words
In a medical electrode, low profile, non-conducting, collapse resistant means defining an electrolyte receiving, cup-shaped cavity having mutually spaced open and closed ends, the closed end of said cavity being formed by a relatively rigid base, apertured elastic sheet means connected to said base in overlying relation thereto, said sheet means having a lower surface of said sheet means adjacent and in surrounding relation to said open end of said cavity in surrounding relation to said open end of said cavity, an adhesive on said lower surface, a snap fastener projecting through said base and supported by said base remote from said open end of said cavity, said snap fastener projecting through an aperture in said sheet means, and a removable protective cover for said adhesive.
Claim 3
Dependent Claim
28 words
The medical electrode of claim 1 in which said base has an aperture therethrough, said snap fastener consisting of interfitting parts disposed on opposite sides of said base.
Claim 4
Dependent Claim
37 words
The medical electrode of claim 2 wherein said base is a flat circular member, said aperture is disposed centrally in said base and said interfitting parts each have a circular plate portion disposed concentric to said base.
Claim 5
Dependent Claim
23 words
The medical electrode of claim 3 in which said circular plate portions of said interfitting parts are smaller in diameter than said base.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |