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Apparatus and method for multi-site anti-tachycardia pacing

  • US 6,885,890 B2
  • Filed: 12/20/2001
  • Issued: 04/26/2005
  • Est. Priority Date: 12/20/2001
  • Status: Expired due to Term
First Claim
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1. 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;

    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; and

    , reverting to a ventricular resynchronization paging mode when the ventricular tachycardia is terminated, wherein in the resynchronization mode one of the sites is designated as the rate site and paced with a bradycardia pacing mode and one or more of the other sites are paced at specified resynchronization offset intervals with respect to paces delivered to the rate site.

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