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System and method for delivering multiple closely spaced defibrillation pulses

  • US 5,620,464 A
  • Filed: 01/23/1995
  • Issued: 04/15/1997
  • Est. Priority Date: 12/18/1992
  • Status: Expired due to Fees
First Claim
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1. A main energy delivery electrical circuit for use in an implantable cardioverter defibrillator device, comprising:

  • a) a low power output primary defibrillator battery;

    b) a high power output intermediate power intensifying capacitor system;

    c) switch means, electrically connected to the intensifying capacitor system and the primary defibrillator battery, for selectively switching between the primary defibrillator battery and the intensifying capacitor system;

    d) a high voltage transformer system electrically connected to the switch means; and

    a main energy delivery capacitor system connected to the transformer system for storing, in a first pulse to be discharged, an electrical charge from the primary defibrillator battery and for storing, as at least one subsequent pulse to be discharged, an electrical charge derived from the intensifying capacitor system,such that the electrical circuit permits the implantable cardioverter defibrillator device to deliver multiple closely spaced defibrillation pulses to a heart.

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