US5154501A
Expired / Lapsed
US
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Process for identification of an active site of ventricular tachycardia and for electrode attachment of an endocardial defibrilator
Assignee: LIGHTWAVE ABLATIOIN SYSTEMS
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Filing: 1990-10-19
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Granted: 1992-10-13
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Expires: 2010-10-19
Abstract
Abstract An electrophysiologically guided arrhythmia ablation system for ventricular tachycardia or other arrhythmias. The system includes recording the electrical activation time of various parts of the heart for locating the active site of the arrhythmia. The system has the capability of processing local myocardial electrical activation data. The process includes identification of an active site which occurs during the 20-80%, preferably 35-50%, time period of a diastolic interval. The diastolic interval is monitored by appropriate electrical connections between the heart and a monitor. A mapping device connects to the monitor which maps for indicating an active site. The active site is then a site for preferred placement of an electrode for a defibrilator.
Inventors
- 👤 Robert H. Svenson
- 👤 Wendell King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:59
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/18; A61B18/20; A61B18/22; A61B18/24; A61B5/00; A61B5/24; A61B5/316; A61B5/318; A61B5/346; A61B5/349; A61B5/363; A61B17/00; A61B17/00234; A61B2017/00238; A61B2017/00243
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
78 words
Process for identification of an active site of diastolic activation during ventricular tachycardia (VT) and attachment of an electrode thereto for a defibrilator comprising the steps of: a. measuring the time period of a diastolic interval of a heart; b. mapping heart tissue for an active site; c. identifying the active site in the 20-80% time period of said measured time period of said diastolic interval; and, d. attaching an electrode at the active site for a defibrilator.
Claim 2
Dependent Claim
78 words
Process for identification of an active site of diastolic activation during ventricular tachycardia (VT) and attachment of an electrode thereto for a defibrilator comprising the steps of: a. measuring the time period of a diastolic interval of a heart; b. mapping heart tissue for an active site; c. identifying the active site in the 20-80% time period of said measured time period of said diastolic interval; and, d. attaching an electrode at the active site for a defibrilator.
Claim 3
Dependent Claim
19 words
Process of claim 1 wherein said heart tissue is endocarial tissue, and wherein said electrode is an endocardial electrode.
Claim 4
Dependent Claim
19 words
Process of claim 1 wherein said heart tissue is epicardial tissue, and wherein said electrode is an epicardial electrode.
Claim 5
Dependent Claim
86 words
Process for identification of an active site of diastolic activation during ventricular tachycardia (VT) and attachment of an electrode thereto for a defibrilator comprising the steps of: a. measuring the time period of a diastolic interval of a heart; b. mapping heart tissue for an active site; c. identifying the active site in the 20-80% time period of said measured time period of said diastolic interval; d. attaching an electrode at the active site for a defibrilator; and e. attaching said endocardial defibrilator to said electrode.
Claim 6
Dependent Claim
86 words
Process for identification of an active site of diastolic activation during ventricular tachycardia (VT) and attachment of an electrode thereto for a defibrilator comprising the steps of: a. measuring the time period of a diastolic interval of a heart; b. mapping heart tissue for an active site; c. identifying the active site in the 20-80% time period of said measured time period of said diastolic interval; d. attaching an electrode at the active site for a defibrilator; and e. attaching said endocardial defibrilator to said electrode.
Claim 7
Dependent Claim
9 words
Process of claim 4 wherein said range is 35-50%.
Claim 8
Dependent Claim
83 words
Process for identification of an active site of diastolic activation during ventricular tachycardia (VT) and attachment of an electrode thereto for a defibrilator comprising the steps of: a. measuring the time period of a diastolic interval of a heart; b. mapping heart tissue for an active site with a mapping electrode; c. identifying the active site in the 35-50% time period of said measured time period of said diastolic interval; and, d. attaching an electrode at the active site for an endocardial defibrilator.
Claim 9
Dependent Claim
83 words
Process for identification of an active site of diastolic activation during ventricular tachycardia (VT) and attachment of an electrode thereto for a defibrilator comprising the steps of: a. measuring the time period of a diastolic interval of a heart; b. mapping heart tissue for an active site with a mapping electrode; c. identifying the active site in the 35-50% time period of said measured time period of said diastolic interval; and, d. attaching an electrode at the active site for an endocardial defibrilator.
Claim 10
Dependent Claim
13 words
Process of claim 6 wherein said endocardial electrode is also said mapping 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) | 1995-10-13 | 1996-04-13 | 1996-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-13 | 2000-04-13 | 2000-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-13 | 2004-04-13 | 2004-10-13 | $7700.00 | Window Closed / Lapsed |