US5148806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode for use with a living body
Assignee: Individual
•
Filing: 1989-12-22
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Granted: 1992-09-22
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Expires: 2009-12-22
Abstract
Abstract An electrode for use primarily in electrocardiography is described. This electrode is comprised of porous polytetrafluoroethylene and an electrically conductive powder so as to be moisture vapor permeable. A preferred embodiment uses fibrillized porous polytetrafluoroethylene. It may have an adhesive on one surface for easy attachment to a patient.
Inventors
- 👤 Yasuhiro Fukui
- 👤 Kazuyuki Mitsui
- 👤 Hiroshi Kato
- 👤 Yoshihiro Chikamori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:41
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/25; A61B5/251; A61B5/257; A61B5/263; A61B5/268; A61B5/279; A61B5/28; D; D04; D04H; D04H1/00; D04H1/40; D04H1/44; D04H1/46
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
34 words
A conductive electrode for use on a living body, comprised of a porous, water vapor permeable material containing 5 to 90 percent by weight polytetrafluoroethylene and 10 to 95 percent by weight conductive powder.
Claim 2
Dependent Claim
34 words
A conductive electrode for use on a living body, comprised of a porous, water vapor permeable material containing 5 to 90 percent by weight polytetrafluoroethylene and 10 to 95 percent by weight conductive powder.
Claim 3
Dependent Claim
42 words
A conductive electrode according to claim 1 wherein said porous, water vapor permeable material has a microstructure of nodes interconnected by fibrils, wherein void spaces exist between the fibrils, and the nodes interconnected by these fibrils are substantially connected to each other.
Claim 4
Dependent Claim
15 words
A conductive electrode according to claim 2 having been made porous by a fibrillization process.
Claim 5
Dependent Claim
17 words
A conductive electrode according to claims 1, 2 or 3 wherein said conductive powder is carbon black.
Claim 6
Dependent Claim
17 words
A conductive electrode according to claims 1, 2 or 3 wherein said conductive powder is a metal.
Claim 7
Dependent Claim
34 words
A conductive electrode according to claims 1, 2 or 3 having at least one side, an upper surface and a lower surface, wherein said lower surface is at least partly coated with an adhesive.
Claim 8
Dependent Claim
15 words
A conductive electrode according to claims 1, 2 or 3 which is rectangular in shape.
Claim 9
Dependent Claim
15 words
A conductive electrode according to claims 1, 2 or 3 which is square in shape.
Claim 10
Dependent Claim
16 words
A conductive electrode according to claim 8 which has a connecting part projecting from one side.
Claim 11
Dependent Claim
15 words
A conductive electrode according to claims 1, 2 or 3 which is circular in shape.
Claim 12
Dependent Claim
16 words
A conductive electrode according to claim 10 which has a connecting part projecting from one side.
Claim 13
Dependent Claim
15 words
A conductive electrode according to claims 1, 2 or 3 which is elliptical in shape.
Claim 14
Dependent Claim
16 words
A conductive electrode according to claim 12 which has a connecting part projecting from one side.
Claim 15
Dependent Claim
32 words
A conductive electrode according to claim 1 comprised of a porous, water vapor permeable material containing 20 to 70 percent by weight polytetrafluoroethylene and 30 to 80 percent by weight conductive powder.
Claim 16
Dependent Claim
32 words
A conductive electrode according to claim 1 comprised of a porous, water vapor permeable material containing 20 to 60 percent by weight polytetrafluoroethylene and 40 to 80 percent by weight conductive powder.
References Cited (Backward Citations)
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US3602216A
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US4187390A
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EP0008460A2
Cited
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GB2179555A
Cited
EP0275628A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-22 | 1996-03-23 | 1996-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-22 | 2000-03-23 | 2000-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-22 | 2004-03-23 | 2004-09-22 | $7700.00 | Window Closed / Lapsed |