Patent US5336254A successfully refreshed from Google Patents.
US5336254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defibrillation lead employing electrodes fabricated from woven carbon fibers
Assignee: Medtronic Inc
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Filing: 1992-09-23
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Granted: 1994-08-09
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Expires: 2012-09-23
Abstract
Abstract An implantable cardioversion or defibrillation lead provided with a large surface, carbon fiber electrode. The lead takes the form of an elongated tubular braid of carbon fiber, provided with a central core of insulating plastic. Over the majority of the braid's length, it is covered by an outer sheath of insulating plastic as well, serving as a lead conductor. At its distal end, the braid is not covered, and the exposed portion of the braid serves as the electrode.
Inventors
- 👤 Kenneth R. Brennen
- 👤 Terrell M. Williams
- 👤 Robert A. Gabler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:08
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/0587
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
83 words
A defibrillation lead, comprising: an elongated insulated conductor; and a carbon fiber electrode, coupled to said elongated insulated conductor, said carbon fiber electrode comprising one or more tubular braids of carbon fibers, said tubular braids of carbon fibers arranged to define a generally planar large surface area defibrillation electrode, said tubular braids each provided with an inner core of a flexible biocompatable plastic, said elongated, insulated conductor comprising an extension and continuation of one or more of said tubular braids of carbon fibers.
Claim 2
Dependent Claim
83 words
A defibrillation lead, comprising: an elongated insulated conductor; and a carbon fiber electrode, coupled to said elongated insulated conductor, said carbon fiber electrode comprising one or more tubular braids of carbon fibers, said tubular braids of carbon fibers arranged to define a generally planar large surface area defibrillation electrode, said tubular braids each provided with an inner core of a flexible biocompatable plastic, said elongated, insulated conductor comprising an extension and continuation of one or more of said tubular braids of carbon fibers.
Claim 3
Dependent Claim
16 words
A lead according to claim 1, wherein said inner cores comprise members fabricated of insulative plastic.
Claim 4
Dependent Claim
31 words
A lead according to claim 2 wherein said lead is further provided with a flexible, insulative electrode pad to which said tubular, braided carbon fibers and said inner cores are mounted.
Claim 5
Dependent Claim
37 words
A lead according to claim 1 or claim 2 or claim 3 wherein said carbon fibers comprise carbon fibers each provided with a coating of a conductive metal, overlaid with a coating of a second, biocompatible metal.
Claim 6
Dependent Claim
87 words
A defibrillation lead, comprising: an elongated insulated conductor; and a carbon fiber electrode, coupled to said elongated insulated conductor, said carbon fiber electrode comprising one or more tubular braids of carbon fibers, said tubular braids of carbon fibers arranged to define a generally planar, large surface area defibrillation electrode, said tubular braids each provided with an inner core of a flexible, biocompatable plastic, said carbon fibers comprising carbon fibers each provided with a coating of a conductive metal, overlaid with a coating of a second, biocompatable metal.
Claim 7
Dependent Claim
87 words
A defibrillation lead, comprising: an elongated insulated conductor; and a carbon fiber electrode, coupled to said elongated insulated conductor, said carbon fiber electrode comprising one or more tubular braids of carbon fibers, said tubular braids of carbon fibers arranged to define a generally planar, large surface area defibrillation electrode, said tubular braids each provided with an inner core of a flexible, biocompatable plastic, said carbon fibers comprising carbon fibers each provided with a coating of a conductive metal, overlaid with a coating of a second, biocompatable metal.
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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) | 1997-08-08 | 1998-02-07 | 1998-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-08 | 2002-02-07 | 2002-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-08 | 2006-02-07 | 2006-08-09 | $7700.00 | Window Closed / Lapsed |