US5683447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead with septal defibrillation and pacing electrodes
Assignee: Pacesetter Inc
•
Filing: 1995-12-19
•
Granted: 1997-11-04
•
Expires: 2015-12-19
Abstract
Abstract A lead system for use with an implantable pacemaker/cardioverter/defibrillator. The lead system includes a securable pace/sense electrode positioned between the distal tip of the lead and the tricuspid valve. The distal tip of the lead is positioned at the apex of the right ventricle and may or may not be secured there by a second fixation means such as a screw tip or tines. The securable pace/sense electrode allows the defibrillation electrode to be accurately positioned by the patient's surgeon and maintained in intimate contact with the septum wall of the patient's heart, thereby reducing defibrillation thresholds; it provides a sense signal from the region of the His bundle or AV node, which can be used with other electrodes to distinguish between various arrhythmias; and it provides more physiologic pacing leading to greater cardiac output.
Inventors
- 👤 M. Elizabeth Bush
- 👤 Eric S. Fain
- 👤 Drew A. Hoffmann
- 👤 Benjamin D. Pless
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:58
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056; A61N1/057; A61N1/0573; A61N1/0563
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
95 words
An endocardial defibrillation lead comprising: a lead body having a distal end for positioning within a patient's heart and a proximal end for connection to an implantable pulse generator; a defibrillation electrode positioned on said lead body near said lead body distal end; a securable septal pacing electrode positioned on said lead body proximal of said distal end of said lead body for securing said defibrillation electrode to the intraventricular septum of said patient's heart; and means disposed at said distal end for securing said distal end to a separate portion of said patient's heart.
Claim 2
Dependent Claim
95 words
An endocardial defibrillation lead comprising: a lead body having a distal end for positioning within a patient's heart and a proximal end for connection to an implantable pulse generator; a defibrillation electrode positioned on said lead body near said lead body distal end; a securable septal pacing electrode positioned on said lead body proximal of said distal end of said lead body for securing said defibrillation electrode to the intraventricular septum of said patient's heart; and means disposed at said distal end for securing said distal end to a separate portion of said patient's heart.
Claim 3
Dependent Claim
31 words
The endocardial defibrillation lead of claim 1 wherein said securable septal pacing electrode is positioned on said lead body four to ten centimeters from said distal end of said lead body.
Claim 4
Dependent Claim
16 words
The endocardial defibrillation lead of claim 1 wherein said securable pacing electrode is extendable and retractable.
Claim 5
Dependent Claim
15 words
The endocardial defibrillation lead of claim 1 wherein said securable pacing electrode comprises a barb.
Claim 6
Dependent Claim
15 words
The endocardial defibrillation lead of claim 1 wherein said securable pacing electrode comprises a hook.
Claim 7
Dependent Claim
59 words
The endocardial defibrillation lead of claim 1 wherein said lead body includes a lumen extending therethrough, said lead further including a stylet for positioning within said lumen and having a distal end adapted to actuate said securable electrode whereby said securable electrode is caused to extend laterally from said lead body into the intraventricular septum of said patient's heart.
Claim 8
Dependent Claim
24 words
The endocardial defibrillation lead of claim 6 wherein said lumen is spaced radially from and parallel to the central axis of said lead body.
Claim 9
Dependent Claim
29 words
The endocardial defibrillation lead of claim 1 wherein said means disposed at said distal end comprises a plurality of tines oriented at an acute angle along said lead body.
Claim 10
Dependent Claim
19 words
The endocardial defibrillation lead of claim 1 wherein said means disposed at said distal end comprises a helical screw.
Claim 11
Dependent Claim
18 words
The endocardial defibrillation lead of claim 9 wherein said helical screw is electrically connected to said defibrillation electrode.
Claim 12
Dependent Claim
26 words
The endocardial defibrillation lead of claim 1 wherein said lead body further includes a distal pacing/sensing electrode positioned at said distal end of said lead body.
Claim 13
Dependent Claim
23 words
The endocardial defibrillation lead of claim 1 wherein said lead body is curved to urge said defibrillation electrode against said patient's intraventricular septum.
Claim 14
Dependent Claim
40 words
The endocardial defibrillation lead of claim 1 wherein said defibrillation electrode has a proximal end and a distal end, and wherein said securable septal pacing electrode is located between said proximal end and said distal end of said defibrillation electrode.
Claim 15
Dependent Claim
31 words
The endocardial defibrillation lead of claim 1 wherein said defibrillation electrode has a proximal end, and wherein said securable septal pacing electrode is located proximal of said defibrillation electrode proximal end.
Claim 16
Dependent Claim
24 words
The endocardial defibrillation lead of claim 1 and further including at least one atrial sensing electrode located proximal of said securable septal pacing electrode.
Claim 17
Dependent Claim
41 words
A method for implanting the lead of claim 1, comprising the steps of. (a) positioning said distal end in said patient's right ventricular apex; and (b) securing said lead body against said patient's intraventricular septum using said securable septal pacing electrode.
Claim 18
Dependent Claim
12 words
The method of claim 16 wherein said step (b) precedes step (a).
Claim 19
Dependent Claim
20 words
The method of claim 16 and further comprising the step of: (c) securing said distal end to said patient's heart.
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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) | 2000-11-03 | 2001-05-05 | 2001-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-11-03 | 2005-05-05 | 2005-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-11-03 | 2009-05-05 | 2009-11-04 | $7700.00 | Window Closed / Lapsed |