US6119043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Atrial and ventricular cardiac lead having a mechanical bias
Assignee: Cardiac Pacemakers Inc
•
Filing: 1998-08-05
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Granted: 2000-09-12
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Expires: 2018-08-05
Abstract
Abstract A method and system for discriminating atrial and ventricular signal components from a single heart lead, and for using this information for identifying an arrhythmia condition as being atrial or ventricular in origin. The invention is effective in identifying P waves occurring in complex signal which includes relatively stronger R waves or other ventricular artifacts which mask the P waves. The contribution of the R wave signal to the complex signal is obtained by filtering, time windowing and transfer function estimation, then the R wave estimate is subtracted from the combined signal to leave the P wave. The ratio of P waves to R waves, P--P and R--R intervals, and their ratios to one another and to fixed values can be estimated, and used in a comparison to discriminate between atrial and ventricular arrhythmia, to thereby enable appropriate treatment.
Inventors
- 👤 William Hsu
- 👤 Jay A. Warren
- 👤 Gerrard M. Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:26
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/362; A61N1/3621; A61N1/3622
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
204 words
An endocardial heart lead system, comprising: an elongated generally flexible tubular housing having a proximal end for connection to a device and distal end for placement, in a use position, through the right atrium to the right ventricle of a heart; a pair of ventricular electrodes respectively at and adjacent the distal end of the lead for contact in the ventricle and receiving ventricular signals of the heart; an SVC electrode positioned on the tubular housing at a position spaced from the distal end for placement in the superior vena cava when the lead system is in the heart; an atrial electrode positioned on the tubular housing at a position spaced from the distal end and from the SVC electrode for placement in the atrium when the lead system is in the heart; the tubular housing including conductors therein connected to the electrodes and for connection to a device at the proximal end; and the tubular housing having a curved portion, taking the form of a lateral protrusion along said tubular housing, in region of the atrial electrode to mechanically bias the atrial electrode into contact with the wall of the atrium of the heart when the lead system is in the use position.
Claim 2
Dependent Claim
204 words
An endocardial heart lead system, comprising: an elongated generally flexible tubular housing having a proximal end for connection to a device and distal end for placement, in a use position, through the right atrium to the right ventricle of a heart; a pair of ventricular electrodes respectively at and adjacent the distal end of the lead for contact in the ventricle and receiving ventricular signals of the heart; an SVC electrode positioned on the tubular housing at a position spaced from the distal end for placement in the superior vena cava when the lead system is in the heart; an atrial electrode positioned on the tubular housing at a position spaced from the distal end and from the SVC electrode for placement in the atrium when the lead system is in the heart; the tubular housing including conductors therein connected to the electrodes and for connection to a device at the proximal end; and the tubular housing having a curved portion, taking the form of a lateral protrusion along said tubular housing, in region of the atrial electrode to mechanically bias the atrial electrode into contact with the wall of the atrium of the heart when the lead system is in the use position.
Claim 3
Dependent Claim
68 words
The endocardial heart lead system according to claim 1, wherein the curved portion comprises a flexible arch formed in the tubular housing in the region thereof for placement in the atrium when the heart lead is in the use position, and wherein the atrial electrode is placed on the curve of the arch for holding in contact with the atrial wall by the resilience of the curved portion.
Claim 4
Dependent Claim
30 words
The endocardial heart lead system according to claim 2, wherein the tubular housing includes a stylette coil, and wherein the flexible arch is formed by bends in the stylette coil.
Claim 5
Dependent Claim
131 words
An endocardial heart lead system, comprising: an elongate tubular housing having a proximal end for connection to a device and a distal end; a pair of ventricular electrodes respectively at and adjacent the distal end of the lead; an SVC electrode positioned on the housing at a position spaced from the distal end; an atrial electrode positioned on the housing at a position spaced from the distal end and from the SVC electrode; the tubular housing including conductors therein connected to the electrodes and for connection to a device at the proximal end; and the tubular housing having a lateral protrusion in region of the atrial electrode to position the atrial electrode into contact with the wall of the atrium of the heart when the lead is in a use position.
Claim 6
Dependent Claim
131 words
An endocardial heart lead system, comprising: an elongate tubular housing having a proximal end for connection to a device and a distal end; a pair of ventricular electrodes respectively at and adjacent the distal end of the lead; an SVC electrode positioned on the housing at a position spaced from the distal end; an atrial electrode positioned on the housing at a position spaced from the distal end and from the SVC electrode; the tubular housing including conductors therein connected to the electrodes and for connection to a device at the proximal end; and the tubular housing having a lateral protrusion in region of the atrial electrode to position the atrial electrode into contact with the wall of the atrium of the heart when the lead is in a use position.
Claim 7
Dependent Claim
18 words
The endocardial heart lead system as recited in claim 4, wherein the lateral protrusion comprises a semi-rigid arch.
Claim 8
Dependent Claim
24 words
The endocardial heart lead system as recited in claim 4, wherein the atrial electrode comprises a ring around the lead at the lateral protrusion.
Claim 9
Dependent Claim
21 words
The endocardial heart lead system as recited in claim 4, wherein the protrusion is offset from approximately 1 to 3 centimeters.
Claim 10
Dependent Claim
28 words
The endocardial heart lead system as recited in claim 4, wherein the axial distance of the atrial electrode from the SVC electrode is approximately 0.5 to 3 centimeters.
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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) | 2003-09-12 | 2004-03-13 | 2004-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-09-12 | 2008-03-13 | 2008-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-09-12 | 2012-03-13 | 2012-09-12 | $7700.00 | Window Closed / Lapsed |