US5235977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode arrangement for an implantable defibrillator/cardioverter
Assignee: Pacesetter AB
•
Filing: 1992-06-09
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Granted: 1993-08-17
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Expires: 2012-06-09
Abstract
Abstract An electrode arrangement for an implantable defibrillator/cardioverter has two intravascular electrodes, one of which is disposed in the inferior vena cava. The arrangement has a third, planar electrode, which is disposed outside of the heart. Placement of one of the intravascular electrodes in the inferior vena cava, instead of in the right ventricle as in known systems, achieves a high utilization of the defibrillation energy without the presence of an endocardial electrode.
Inventors
- 👤 Jakub Hirschberg
- 👤 Olof Stegfeldt
- 👤 Lars-Olof Peterson
- 👤 Malin Alm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:34
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/38; A61N1/39; A61N1/3918
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
83 words
In an implantable defibrillator/cardioverter system having a pulse generator for supplying electrical defibrillation/cardioversion pulses, an improved electrode arrangement for in vivo delivery of said pulses to a heart, said improved electrode arrangement comprising: two intravascular electrode means, one of said intravascular electrode for positioning in the superior vena cava and the other of said intravascular electrode means for positioning in the inferior vena cava; and a third, planar electrode means for positioning outside of said heart in the region of the left ventricle.
Claim 2
Dependent Claim
83 words
In an implantable defibrillator/cardioverter system having a pulse generator for supplying electrical defibrillation/cardioversion pulses, an improved electrode arrangement for in vivo delivery of said pulses to a heart, said improved electrode arrangement comprising: two intravascular electrode means, one of said intravascular electrode for positioning in the superior vena cava and the other of said intravascular electrode means for positioning in the inferior vena cava; and a third, planar electrode means for positioning outside of said heart in the region of the left ventricle.
Claim 3
Dependent Claim
35 words
An improved electrode arrangement as claimed in claim 1 further comprising at least one endocardial electrode means connected to a flexible electrode catheter and electrically connected to a detector/cardiac pacing circuit contained in said defibrillator/cardioverter.
Claim 4
Dependent Claim
26 words
An improved electrode arrangement as claimed in claim 1 wherein said two intravascular electrode means are connected to a common catheter and spaced from each other.
Claim 5
Dependent Claim
37 words
An improved electrode arrangement as claimed in claim 3 wherein said catheter has a distal end, and wherein said electrode means for positioning in the inferior vena cava is disposed at said distal end of said catheter.
Claim 6
Dependent Claim
33 words
An improved electrode arrangement as claimed in claim 4 further comprising means connected to said distal end of said catheter for fixing said distal end of said catheter in the inferior vena cava.
Claim 7
Dependent Claim
36 words
An improved electrode arrangement as claimed in claim 3 further comprising means connected to said catheter between said two intravascular electrode means for fixing said catheter in the region of the right atrium of said heart.
Claim 8
Dependent Claim
29 words
An improved electrode arrangement as claimed in claim 6 wherein said catheter in the right atrium has a deformation which deviates from a straight-line path for fixing the catheter.
Claim 9
Dependent Claim
30 words
An improved electrode arrangement as claimed in claim 6 wherein said means for fixing the catheter the right atrium comprises a plurality of spreader elements laterally projecting from said catheter.
Claim 10
Dependent Claim
55 words
An improved electrode arrangement as claimed in claim 6 wherein said means for fixing said catheter the right atrium project into the right atrium and carry an atrial electrode means for location in the right atrium and electrically connected to a detector/cardiac pacing circuit in said defibrillator/cardioverter via an electrode line contained in said catheter.
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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) | 1996-08-16 | 1997-02-15 | 1997-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-16 | 2001-02-15 | 2001-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-16 | 2005-02-15 | 2005-08-17 | $7700.00 | Window Closed / Lapsed |