US3882853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biomedical electrode
Assignee: Cardiodynamics Inc
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Filing: 1974-06-13
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Granted: 1975-05-13
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Expires: 1994-06-13
Abstract
Abstract A biomedical electrode or sensor is provided having a cup-like soft plastic base member with a solid conductive snap member therein and with a compressible sponge-like material holding a conductive paste between the solid conductive member and the body of the wearer. The device of the present invention is suitable for use as a sensor wherein it is desired to measure an electrical potential developed by the body as well as useful wherein potentials are applied to the body as in a cardiac pacemaker. The electrode was particularly designed for use with a cardiac monitor device.
Inventors
- 👤 John W Gofman
- 👤 Richard F Gianni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:07
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/25; A61B5/263; A61B5/266; A61B5/251; A61B5/257; A61B5/265
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
186 words
A BODY ELECTRODE COMPRISING IN COMBINATION: A. A BASE MEMBER MADE OF A SINGLE PIECE OF A FLEXIBLE, SOFT PLASTIC HAVING A THIN FLEXIBLE RIM PORTION OF RIGID CENTER FLAT BOTTOMED CUP-LIKE MEMBER DEFINED BY HEAVY SIDEWALLS AND A HEAVY TOP, B. A SNAP COMPRISING A RELATIVELY THIN FLAT DISC OF CONDUTIVE MATERIAL LYING ON THE FLAT BOTTOM OF THE DUP-LIKE MMEMBER, AND HAVING A TERMINAL EXTENDING THROUGH THE FACE OF THE CUP-LIKE MMEMBER, C. A THIN SHEET POROUS NON-CONDUCTIVE MATERIAL OF SUBSTANTIALLY THE SAME SIZE AS THE FLAT BOTTOM OF THE CUP-LIKE MEMBER, AND HAVING ONE SURFACE IN CONTACT WITH SAID DISC, D. A THICK DISC OF POROUS FOAM-LIKE MATERIAL IN CONTACT WITH SAID POROUS NONCONDUCTIVE MATERIAL AND FILLING THE REMAINDER OF THE CAVITY OF THE CUP-LIKE MEMBER AND EXTENDING A SUBSTANTIAL DISTANCE BEYOND THE OPEN END OF THE CUP-LIKE MEMBER, SAID FOAM-LIKE MATERIAL BEING SATURATED WITH AN ELECTRICALLY CONDUCTIVE MATERIAL, AND E. MEANS FOR ATTACHING SAID CUP TO A HYMAN BODY BY THE OUTER THIN WIDE RIM WHEREBY SAID FOAMM-LIKE MATERIAL IS BROUGH INTO COMPRESSION WITHIN THE CUP-LIKE MEMBER BY PRESSURE FROM THE BODY.
Claim 2
Dependent Claim
186 words
A BODY ELECTRODE COMPRISING IN COMBINATION: A. A BASE MEMBER MADE OF A SINGLE PIECE OF A FLEXIBLE, SOFT PLASTIC HAVING A THIN FLEXIBLE RIM PORTION OF RIGID CENTER FLAT BOTTOMED CUP-LIKE MEMBER DEFINED BY HEAVY SIDEWALLS AND A HEAVY TOP, B. A SNAP COMPRISING A RELATIVELY THIN FLAT DISC OF CONDUTIVE MATERIAL LYING ON THE FLAT BOTTOM OF THE DUP-LIKE MMEMBER, AND HAVING A TERMINAL EXTENDING THROUGH THE FACE OF THE CUP-LIKE MMEMBER, C. A THIN SHEET POROUS NON-CONDUCTIVE MATERIAL OF SUBSTANTIALLY THE SAME SIZE AS THE FLAT BOTTOM OF THE CUP-LIKE MEMBER, AND HAVING ONE SURFACE IN CONTACT WITH SAID DISC, D. A THICK DISC OF POROUS FOAM-LIKE MATERIAL IN CONTACT WITH SAID POROUS NONCONDUCTIVE MATERIAL AND FILLING THE REMAINDER OF THE CAVITY OF THE CUP-LIKE MEMBER AND EXTENDING A SUBSTANTIAL DISTANCE BEYOND THE OPEN END OF THE CUP-LIKE MEMBER, SAID FOAM-LIKE MATERIAL BEING SATURATED WITH AN ELECTRICALLY CONDUCTIVE MATERIAL, AND E. MEANS FOR ATTACHING SAID CUP TO A HYMAN BODY BY THE OUTER THIN WIDE RIM WHEREBY SAID FOAMM-LIKE MATERIAL IS BROUGH INTO COMPRESSION WITHIN THE CUP-LIKE MEMBER BY PRESSURE FROM THE BODY.
Claim 3
Dependent Claim
26 words
The structure of claim 1 wherein the outer surface of said cup-like member is formed at an angle to provide a ramp to resist lateral forces.
Claim 4
Dependent Claim
33 words
The structure of claim 1 wherein said rim is provided with a double sided adhesive on its outer surface surrounding the opening of the cup for attachment of the electrode to the body.
Claim 5
Dependent Claim
34 words
The structure of claim 1 wherein the inner surface of said cup is provided with a plurality of bosses, said snap being retained between the bosses and the flat bottom of the cup-like member.
Claim 6
Dependent Claim
26 words
The structure of claim 1 wherein the snap terminal is a center post extending through the base, said center post terminating in a bifurcated bulbous member.
Claim 7
Dependent Claim
29 words
The structure of claim 1 wherein said snap has a sharp edge at the perimeter of said disc for retaining itself within the base and acting as a seal.
Claim 8
Dependent Claim
18 words
The structure of claim 1 wherein the thin sheet of porous nonconductive material is a sheet of paper.
Claim 9
Dependent Claim
27 words
The structure of claim 7 wherein the porous paper consists of a sheet of blotting paper and the foam-like material consists of a disc of polyurethane foam.
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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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |