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Implantable cardioverter defibrillator having a high voltage capacitor

  • US 5,658,319 A
  • Filed: 05/13/1996
  • Issued: 08/19/1997
  • Est. Priority Date: 12/13/1993
  • Status: Expired due to Fees
First Claim
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1. An implantable cardioverter defibrillator apparatus for treating cardiac dysrhythmias including a battery system and a stepup transformer for charging a storage device in response to a cardiac dysrhythmia detected by a sensing system, the apparatus comprising:

  • a plurality of implantable sensing and discharge electrodes adapted to be located in a human patient;

    a primary capacitive energy storage system connected to the stepup transformer for storing and delivering a high voltage output of at least 1500 volts; and

    a stepdown transformer connected between the primary capacitive energy storage system and the electrodes for reducing the high voltage out-put of the primary capacitive energy storage system to desired output pulse level.

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