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Method and apparatus for terminating tachycardia

  • US 5,275,621 A
  • Filed: 04/13/1992
  • Issued: 01/04/1994
  • Est. Priority Date: 04/13/1992
  • Status: Expired due to Term
First Claim
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1. An implantable cardioverter, comprising:

  • first electrode means for sensing signals from a chamber of a heart indicative of depolarizations of said chamber of said heart;

    second electrode means for sensing signals from said chamber of said heart indicative of depolarizations of said chamber of said heart;

    first detecting means coupled to said first electrode means for detecting the occurrence of a first event within a said signal from said chamber of said heart indicative of a depolarization of said chamber of said heart;

    second detecting means coupled to said second electrode means for detecting the occurrence of a second event within a said signal from said chamber of said heart indicative of a depolarization of said chamber of said heart;

    means for measuring a time differential between the occurrences of said first and second events;

    means for defining a cardioversion pulse delay as a function of said measured time differential;

    means for initiating timing of a said cardioversion pulse delay upon the occurrence of a said second event; and

    means for delivering a cardioversion pulse to said heart upon the expiration of a said cardioversion pulse delay.

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