US3880169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled entry pacemaker electrode for myocardial implantation
Assignee: Baxter International Inc
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Filing: 1974-01-02
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Granted: 1975-04-29
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Expires: 1994-01-02
Abstract
Abstract An insulated lead has a sharp pointed electrode on its distal end for penetration into the myocardium. The tip end portion of the electrode is bent at a small angle to the axis of the lead so that the depth of penetration of the electrode can be controlled by choosing an appropriate angle of penetration. A felt pad on the lead and electrode provides for a single suture fixation of the lead to the heart muscle and controls blood seepage adjacent the electrode.
Inventors
- 👤 Albert Starr
- 👤 David L Swendson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:28
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/0587
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
200 words
A controlled entry pacemaker electrode for myocardial implantation comprising a bent, rigid electrode having a pointed distal end portion disposed at a small angle to the axis of its proximal end portion so that said pointed end portion may be caused to penetrate the myocardium at an oblique angle which will effect penetration to a selected depth, an insulating sleeve on said electrode leaving the point thereof exposed, a flexible lead connected axially to said proximal end portion of said electrode, a flexible insulating tube on said lead, and a transverse sewing pad fixedly secured to said sleeve and tube in a plane perpendicular to the plane of the angle in said bend and having wings extending laterally on opposite sides of said lead and electrode with the distal edge of said pad spaced in a proximal direction from the bend in the electrode so that said pad may lie against the surface of the heart and receive a suture in the herat extending through said wings and transversely overlying said flexible lead as a fulcrum to hold said pointed end of said electrode penetrated in the myocardim at said oblique angle projecting in a distal direction from said pad.
Claim 2
Dependent Claim
200 words
A controlled entry pacemaker electrode for myocardial implantation comprising a bent, rigid electrode having a pointed distal end portion disposed at a small angle to the axis of its proximal end portion so that said pointed end portion may be caused to penetrate the myocardium at an oblique angle which will effect penetration to a selected depth, an insulating sleeve on said electrode leaving the point thereof exposed, a flexible lead connected axially to said proximal end portion of said electrode, a flexible insulating tube on said lead, and a transverse sewing pad fixedly secured to said sleeve and tube in a plane perpendicular to the plane of the angle in said bend and having wings extending laterally on opposite sides of said lead and electrode with the distal edge of said pad spaced in a proximal direction from the bend in the electrode so that said pad may lie against the surface of the heart and receive a suture in the herat extending through said wings and transversely overlying said flexible lead as a fulcrum to hold said pointed end of said electrode penetrated in the myocardim at said oblique angle projecting in a distal direction from said pad.
Claim 3
Dependent Claim
27 words
An electrode as defined in claim 1, said sewing pad being flexible and absorbent to accommodate to the epicardial surface and control blood seepage adjacent said electrode.
Claim 4
Dependent Claim
25 words
An electrode as defined in claim 1, said angle of the bend in said electrode having a value in the range between 10* and 45*.
Claim 5
Dependent Claim
12 words
An electrode as defined in claim 3, said angle being approximately 16*.
Claim 6
Dependent Claim
28 words
An electrode as defined in claim 1 including said electrode, and an annular recess in said electrode adjacent said pointed end containing the distal end of said sleeve.
Claim 7
Dependent Claim
32 words
An electrode as definEd in claim 1 including said suture, said suture comprising a single suture spaced a short distance in a proximal direction from the proximal end of said rigid electrode.
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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |