Patent US4394866A successfully refreshed from Google Patents.
US4394866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
S-A Node helical lead for atrial pacemakers and method of placement
Assignee: RESEARCH Corp A NOT-FOR-PROFIT CORP
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Filing: 1981-01-21
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Granted: 1983-07-26
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Expires: 2001-01-21
Abstract
Abstract An improved unipolar or bipolar lead for at least S-A Node Atrium Contact to provide atrial pacing or atrial synchronized pacing wherein the distal end of the lead is configured as a S-A Node helix whose coiled diameter is larger than that of the cava.
Inventors
- 👤 Howard C. Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:53
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
91 words
An improved electrically conductive lead for at least S-A Node Atrium Contact to provide atrium pacing and sensing comprising an electrical conductor having a lumen there through, an electrode tip, said electrode tip being electrically connected to the electrical conductor adjacent one end of the conductor, and S-A Node helix, said helix extending from the electrode tip toward the other end of the electrical conductor a distance of 6 to 12 inches and having at least one-and-a-half turns and a non-conductive biocompatable coating encasing the electrical conductor except the electrode tip.
Claim 2
Dependent Claim
91 words
An improved electrically conductive lead for at least S-A Node Atrium Contact to provide atrium pacing and sensing comprising an electrical conductor having a lumen there through, an electrode tip, said electrode tip being electrically connected to the electrical conductor adjacent one end of the conductor, and S-A Node helix, said helix extending from the electrode tip toward the other end of the electrical conductor a distance of 6 to 12 inches and having at least one-and-a-half turns and a non-conductive biocompatable coating encasing the electrical conductor except the electrode tip.
Claim 3
Dependent Claim
19 words
The invention defined in the claim 1 wherein the diameter of the helix is between 1 and 3 inches.
Claim 4
Dependent Claim
23 words
The lead as defined in claim 1 wherein the conductor coating comprises segmented polyurethane and the S-A Node helix configuration is heat set.
Claim 5
Dependent Claim
118 words
An improved electrically conductive lead for at least S-A Node Atrium Contact to provide atrium pacing and sensing comprising an electrical conductor having a lumen there through, an electrode tip, said electrode tip being electrically connected to the electrical conductor adjacent one end of the conductor, an S-A Node helix, said helix extending from the electrode tip toward the other end of the electrical conductor a distance of 6 to 12 inches, and a non-conductive biocompatible coating encasing the electrical conductor except the electrode tip wherein the helix configuration is made by using a conductive wire with a memory helical coil that would cause the lead to maintain its helical shape and yet be able to be stretched.
Claim 6
Dependent Claim
118 words
An improved electrically conductive lead for at least S-A Node Atrium Contact to provide atrium pacing and sensing comprising an electrical conductor having a lumen there through, an electrode tip, said electrode tip being electrically connected to the electrical conductor adjacent one end of the conductor, an S-A Node helix, said helix extending from the electrode tip toward the other end of the electrical conductor a distance of 6 to 12 inches, and a non-conductive biocompatible coating encasing the electrical conductor except the electrode tip wherein the helix configuration is made by using a conductive wire with a memory helical coil that would cause the lead to maintain its helical shape and yet be able to be stretched.
Claim 7
Independent Claim
146 words
A method for at least S-A Node Atrial pacing and sensing comprising the steps forming an electrically conductive lead having a hollow lumen axially therein from an electrical conductor having a tip electrode electrically connected to the conductor, forming the end of the conductor having the electrode tip into a helix having at least one-and-a-half turns, inserting a stylet in the lumen of the lead to cause the lead including its electrode tip end to be straightened, inserting the stylet straightened lead in the atria of a patient via the superior vena cava; removing the stylet from the lumen of the lead to allow the lead to return to its original helix configuration in the atria; slightly retracting the lead and imparting several clockwise axial turns to the lead to cause contact between the atrium at the S-A Node, with the tip electrode of the conductor.
Claim 8
Independent Claim
146 words
A method for at least S-A Node Atrial pacing and sensing comprising the steps forming an electrically conductive lead having a hollow lumen axially therein from an electrical conductor having a tip electrode electrically connected to the conductor, forming the end of the conductor having the electrode tip into a helix having at least one-and-a-half turns, inserting a stylet in the lumen of the lead to cause the lead including its electrode tip end to be straightened, inserting the stylet straightened lead in the atria of a patient via the superior vena cava; removing the stylet from the lumen of the lead to allow the lead to return to its original helix configuration in the atria; slightly retracting the lead and imparting several clockwise axial turns to the lead to cause contact between the atrium at the S-A Node, with the tip electrode of the conductor.
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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) | 1986-07-25 | 1987-01-24 | 1987-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-25 | 1991-01-24 | 1991-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-25 | 1995-01-24 | 1995-07-26 | $7700.00 | Window Closed / Lapsed |