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US 2003/0120315 A1Published application
Apparatus and method for multi-site anti-tachycardia pacing
AssigneeCardiac Pacemakers, Inc.
InventorsJulio C. Spinelli, Qingsheng Zhu, Andrew P. Kramer, Jeffrey E. Stahmann
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Abstract
An apparatus and method for treating ventricular tachycardia in which paces are delivered to the ventricles at multiple pacing sites in accordance with an anti-tachycardia pacing protocol. Paces are delivered at a selected offset interval in a manner that both resynchronizes ventricular contractions and increases the probability of terminating the tachycardia.
Claims20
A method for operating a cardiac rhythm management device, comprising:
- detecting senses from multiple ventricular sites, where a sense corresponds to an intrinsic depolarization occurring at the site;
- detecting a ventricular tachycardia when a time interval between successive senses detected from one of the sites meets a specified rate criterion;
- pacing one of the sites designated as the primary anti-tachycardia pacing (ATP) site with an anti-tachycardia pacing sequence in accordance with an ATP protocol when a ventricular tachycardia is detected, wherein the sequence is delivered at a selected coupling interval with respect to detection of a sense at the primary ATP site;
- and,
- pacing one or more of the other sites, designated as secondary ATP sites, at a selected ATP offset interval with respect to a pace delivered to the primary ATP site in the anti-tachycardia pacing sequence.
2 more elements
A cardiac rhythm management device, comprising:
- sensing channels for detecting senses from multiple ventricular sites, where a sense corresponds to an intrinsic depolarization occurring at the site;
- pacing channels for delivering paces to the multiple ventricular sites;
- a controller for controlling the delivery of paces in accordance with a programmed pacing mode;
- and,
- wherein the controller is programmed to detect a ventricular tachycardia when a time interval between successive senses at site meets a specified rate criterion;
- pace one of the sites designated as the primary ATP site with an anti-tachycardia pacing sequence in accordance with an anti-tachycardia pacing protocol when a ventricular tachycardia is detected, wherein the sequence is delivered at a selected coupling interval with respect to detection of a sense at the primary ATP site;
- and,
- pace one or more of the other sites, designated as secondary ATP sites, at a selected ATP offset interval with respect to a pace delivered to the primary ATP site in the anti-tachycardia pacing sequence.
5 more elements
Dependencies are inferred from the claim text.