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Patent US4281668A successfully refreshed from Google Patents.
US4281668A
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US
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Implantable carbon electrode
Assignee: Pacesetter AB
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Filing: 1979-09-21
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Granted: 1981-08-04
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Expires: 1999-09-21
Abstract
Abstract The invention relates to an implantable carbon electrode. With such an electrode, the energy loss -- occurring after the implantation -- is to be largely avoided and also thrombus formation prevented. For this purpose the invention provides a smooth coating of hydrophilic ion conducting plastic for the electrode, comprising at least on the surface thereof, body and/or blood compatible material. The carbon electrode according to the invention serves in particular as a stimulus electrode, preferably in cardiac pacemakers.
Inventors
- 👤 Gerhard Richter
- 👤 Erhard Weidlich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:11
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
91 words
An implantable carbon electrode comprised of an electrically conductive electrode body and an electrode head, said electrode adapted for contact with an insulated lead-in cable, wherein at least the surface of said electrode head comprises a material selected from the group consisting of glass carbon and pyrolytic carbon which has been superficially activated to present a microporous surface, and wherein the surface of said electrode is provided with a smooth coating consisting of a hydrophilic, ion-conducting plastic having at least a surface thereof comprised of a body and/or blood compatible material.
Claim 2
Dependent Claim
91 words
An implantable carbon electrode comprised of an electrically conductive electrode body and an electrode head, said electrode adapted for contact with an insulated lead-in cable, wherein at least the surface of said electrode head comprises a material selected from the group consisting of glass carbon and pyrolytic carbon which has been superficially activated to present a microporous surface, and wherein the surface of said electrode is provided with a smooth coating consisting of a hydrophilic, ion-conducting plastic having at least a surface thereof comprised of a body and/or blood compatible material.
Claim 3
Dependent Claim
14 words
The implantable carbon electrode of claim 1 wherein said coating consists of a hydrogel.
Claim 4
Dependent Claim
15 words
The implantable electrode of claim 1 wherein said coating consists of an ion exchange material.
Claim 5
Dependent Claim
15 words
The implantable carbon electrode of claim 1 wherein said electrode comprises a carbon fiber bundle.
References Cited (Backward Citations)
GB1219017A
Cited
US3722005A
Cited
US3981309A
Cited
US4033357A
Cited
US3994302A
Cited
DE2613072A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-03 | 1985-02-02 | 1985-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-03 | 1989-02-02 | 1989-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-03 | 1993-02-02 | 1993-08-04 | $7700.00 | Window Closed / Lapsed |