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Travenously placed defibrillation leads

  • US 4,998,975 A
  • Filed: 10/30/1989
  • Issued: 03/12/1991
  • Est. Priority Date: 10/30/1989
  • Status: Expired due to Fees
First Claim
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1. A cardiac defibrillation system comprising:

  • an epicardial electrode for making physical contact with the epicardium of a human heart from a position within the pericardial space of the heart;

    means for transvenously inserting said epicardial electrode into the pericardial space;

    an endocardial electrode for making physical contact with the endocardium of the heart; and

    means for selectively placing a momentary electrical potential between said epicardial and endocardial electrodes, said momentary electrical potential being sufficient to cause a momentary pulse of electrical energy to be delivered to the myocardial tissue intermediate said epicardial and endocardial electrodes;

    said electrical energy being sufficient to cause the myocardium of the heart to depolarize.

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