US4860446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medical electrical lead and method of manufacture
Assignee: Medtronic Inc
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Filing: 1988-02-16
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Granted: 1989-08-29
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Expires: 2008-02-16
Abstract
Abstract A medical electrical lead having a polyurethane outer sheath and one or more coiled metal conductors. The metal conductors are optimized for use in conjunction with a polyurethane sheath and are provided with a barrier coating of a biocompatible metal. The conductors may additionally be provided with an outer, insulative coating.
Inventors
- 👤 Joseph F. Lessar
- 👤 Duane L. Rosenberg
- 👤 Robert E. Kraska
- 👤 James M. Speckien
- 👤 James E. Upton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:29
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C23C14/14; C23C14/20; A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056; H; H01; H01B; H01B7/00; H01B7/0009; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49174; Y10T29/49176
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
81 words
A method of fabricating a medical electrical lead, comprising the steps of: coating a wire fabricated of a first metal which comprises an alloy containing cobalt, chromium, or molybdenum with a second, inert metal selected from the group consisting of platinum, tantalum, niobium, titanium, or alloys thereof; coiling said wire; and mounting said coiled wire within an insulative sheath of polyether urethane and coupling the proximal and distal ends of said coiled wire, respectively, to an electrical connector and an electrode.
Claim 2
Independent Claim
81 words
A method of fabricating a medical electrical lead, comprising the steps of: coating a wire fabricated of a first metal which comprises an alloy containing cobalt, chromium, or molybdenum with a second, inert metal selected from the group consisting of platinum, tantalum, niobium, titanium, or alloys thereof; coiling said wire; and mounting said coiled wire within an insulative sheath of polyether urethane and coupling the proximal and distal ends of said coiled wire, respectively, to an electrical connector and an electrode.
Claim 3
Independent Claim
100 words
A method of fabricating a medical electrical lead, comprising: coating two or more wires fabricated from alloys which include chromium, cobalt or molybdenum with a second, biocompatible inert metal selected from the group consisting of platinum, niobium, tantalum, titanium or alloys thereof; after said coating step, applying a layer of insulative material to the exterior surfaces of said plurality of wires; coiling said plurality of wires to provide a multifilar coil; and mounting said plurality of wires within a polyetherurethane insulative sheath and coupling the proximal end of at least one of said plurality of coiled wires to an electrode.
Claim 4
Independent Claim
100 words
A method of fabricating a medical electrical lead, comprising: coating two or more wires fabricated from alloys which include chromium, cobalt or molybdenum with a second, biocompatible inert metal selected from the group consisting of platinum, niobium, tantalum, titanium or alloys thereof; after said coating step, applying a layer of insulative material to the exterior surfaces of said plurality of wires; coiling said plurality of wires to provide a multifilar coil; and mounting said plurality of wires within a polyetherurethane insulative sheath and coupling the proximal end of at least one of said plurality of coiled wires to an electrode.
Claim 5
Dependent Claim
17 words
A method according to claim 1 or claim 2 wherein said coating step precedes said coiling step.
Claim 6
Dependent Claim
17 words
A method according to claim 1 or claim 2 wherein said coiling step precedes said coating step.
Claim 7
Dependent Claim
27 words
A method according to claim 1 or claim 2 wherein said coating step comprises applying a coating of approximately 200 microns or less of said second metal.
Claim 8
Dependent Claim
31 words
A method according to claim 1 or claim 2 wherein said coating step comprises sputtering with said second metal, to provide a coating having a thickness approximately 500 angstroms or less.
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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) | 1992-08-28 | 1993-02-27 | 1993-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-28 | 1997-02-27 | 1997-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-28 | 2001-02-27 | 2001-08-29 | $7700.00 | Window Closed / Lapsed |