US4313448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Myocardial sutureless lead
Assignee: Medtronic Inc
•
Filing: 1980-01-28
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Granted: 1982-02-02
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Expires: 2000-01-28
Abstract
Abstract Myocardial sutureless unipolar lead including an insulated conductor coil adjacent to a base pad, and a barbed electrode spaced adjacent to the base pad and connected to the conductor coil. The sutureless myocardial unipolar lead requires no stab wound or sutures for electrode placement and support. The barbed electrode is secured to the heart by gently pushing the tip into the myocardial tissue and the electrode is thereby secured to the myocardial tissue. The lead accepts a stiffening stylet for controlling the stiffness to aid in placement of the electrode within the myocardial tissue, and without the need for further insertion tool. The angle of the barbed electrode determines the specific application of the lead for ventricular or atrial pacing applications.
Inventors
- 👤 Kenneth B. Stokes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:06
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/0587
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
87 words
A body implantable lead comprising: a conductor having a distal end; an insulating sheath covering said conductor; means attached to said conductor near said distal end for affixing said body implantable lead to body tissue; and flexible base means attached to said conductor near said distal end which in a relaxed state is disposed over said fixation means from at least one direction and which upon application of a small amount of force may be bent back exposing said fixation means from said at least one direction.
Claim 2
Dependent Claim
87 words
A body implantable lead comprising: a conductor having a distal end; an insulating sheath covering said conductor; means attached to said conductor near said distal end for affixing said body implantable lead to body tissue; and flexible base means attached to said conductor near said distal end which in a relaxed state is disposed over said fixation means from at least one direction and which upon application of a small amount of force may be bent back exposing said fixation means from said at least one direction.
Claim 3
Dependent Claim
23 words
A body implantable lead according to claim 1 wherein said affixing means further comprises: a barbed element having a first pointed distal tip.
Claim 4
Dependent Claim
26 words
A body implantable lead according to claim 2 wherein said barbed element has a second pointed tip in a direction opposite of said first pointed tip.
Claim 5
Dependent Claim
34 words
A body implantable lead according to claim 3 wherein said first pointed tip and said second pointed tip point in directions parallel to the plane of said flexible base means in said relaxed state.
Claim 6
Dependent Claim
22 words
A body implantable lead according to claim 4 wherein said second pointed tip points in a direction toward said flexible base means.
Claim 7
Dependent Claim
23 words
A body implantable lead according to claim 2 wherein said first pointed tip points in a direction away from said flexible base means.
Claim 8
Dependent Claim
26 words
A body implantable lead according to claim 2, 3, 4, 6 or 5 wherein said first pointed tip points in a direction distal of said conductor.
Claim 9
Dependent Claim
21 words
A body implantable lead according to claim 7 further comprising: means attached to said flexible base means for providing fibrogenic growth.
Claim 10
Dependent Claim
15 words
A body implantable lead according to claim 8 wherein said providing means includes surgical mesh.
References Cited (Backward Citations)
US3216424A
Cited
US3367339A
Cited
US3572344A
Cited
US3880169A
Cited
US4010758A
Cited
US4058128A
Cited
US4142530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-02-01 | 1985-08-03 | 1986-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-01 | 1989-08-03 | 1990-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-01 | 1993-08-03 | 1994-02-02 | $7700.00 | Window Closed / Lapsed |