US4010756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heart pacer lead wire with break-away needle
Assignee: Ethicon Inc
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Filing: 1976-02-13
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Granted: 1977-03-08
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Expires: 1996-02-13
Abstract
Abstract A surgical electrode consisting of an insulated stainless steel wire having needles conductively affixed at one or both ends, at least one needle having a blunt end with a straight shank and having a weakened zone between the straight shank end and the opposite pointed end of the needle whereby the pointed end may be snapped off and the straight shank used as an electrical jack for connection to a pacemaker or similar electric current generating or monitoring device. The electrodes are particularly useful as temporary heart pacer electrodes for cardiac stimulation during and after surgical operations.
Inventors
- 👤 Jacques DuMont
- 👤 Jacques Romagne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:31
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/0587; A61B; A61B90/00; A61B90/03; A61B2090/037
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
90 words
In a surgical electrode comprising a. an electrically conductive wire, b. a needle attached to and in electrical contact with said wire and having a substantially straight shank portion adjacent the point of attachment to said wire, and c. a non-conductive coating over the exterior surface of the wire electrically insulating said wire over a major portion of the length thereof, the improvement comprising providing a weakened zone in the needle adjacent the straight shank portion of said needle whereby said needle may be readily broken at said weakened zone.
Claim 2
Dependent Claim
90 words
In a surgical electrode comprising a. an electrically conductive wire, b. a needle attached to and in electrical contact with said wire and having a substantially straight shank portion adjacent the point of attachment to said wire, and c. a non-conductive coating over the exterior surface of the wire electrically insulating said wire over a major portion of the length thereof, the improvement comprising providing a weakened zone in the needle adjacent the straight shank portion of said needle whereby said needle may be readily broken at said weakened zone.
Claim 3
Dependent Claim
21 words
An electrode of claim 1 wherein said weakened zone is at least about 1 cm. from either end of said needle.
Claim 4
Dependent Claim
25 words
An electrode of claim 1 wherein the surface of said needle at said weakened zone defines a groove machined in the circumference of said needle.
Claim 5
Dependent Claim
25 words
An electrode of claim 1 wherein the surface of the needle at said weakened zone defines a groove formed in the circumference of said needle.
Claim 6
Dependent Claim
23 words
An electrode of claim 1 wherein the surface of the needle at said weakened zone defines a necked down segment of the needle.
Claim 7
Dependent Claim
21 words
An electrode of claim 1 wherein said non-conductive coating over the exterior of surface of the wire substantially abuts the needle.
Claim 8
Dependent Claim
24 words
An electrode of claim 1 wherein the non-conductive coating over the exterior surface of the wire is continuous from the surface of the needle.
Claim 9
Dependent Claim
15 words
An electrode of claim 1 wherein said conductive wire is a multifilament stainless steel strand.
Claim 10
Dependent Claim
15 words
An electrode of claim 1 wherein said non-conductive coating is polyethylene, polytetrafluoroethylene, silicone or nylon.
Claim 11
Dependent Claim
117 words
In a surgical electrode comprising a. an electrically conductive wire, b. a first eyeless needle and a second eyeless needle attached to either end of said wire and in electrical contact therewith, at least one eyeless needle having a substantially straight shank portion at least about 1 cm. long adjacent the point of attachment to said wire, and c. a non-conductive coating over the exterior surface of the wire electrically insulating said wire over a major portion of the length thereof, the improvement comprising providing in the needle having a straight shank portion a weakened zone adjacent said straight shank portion whereby the needle may be readily broken by a bending moment applied about the weakened zone.
Claim 12
Dependent Claim
117 words
In a surgical electrode comprising a. an electrically conductive wire, b. a first eyeless needle and a second eyeless needle attached to either end of said wire and in electrical contact therewith, at least one eyeless needle having a substantially straight shank portion at least about 1 cm. long adjacent the point of attachment to said wire, and c. a non-conductive coating over the exterior surface of the wire electrically insulating said wire over a major portion of the length thereof, the improvement comprising providing in the needle having a straight shank portion a weakened zone adjacent said straight shank portion whereby the needle may be readily broken by a bending moment applied about the weakened zone.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |