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Implantable atrial defibrillator having an intermittently activated fibrillation detector

  • US 5,464,432 A
  • Filed: 04/25/1994
  • Issued: 11/07/1995
  • Est. Priority Date: 04/25/1994
  • Status: Expired due to Term
First Claim
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1. An implantable atrial defibrillator for applying cardioverting electrical energy to the atria of a human heart in need of cardioversion, said atrial defibrillator comprising:

  • lead means for sensing electrical activity of the heart including the atria of the heart;

    atrial fibrillation detecting means for detecting if the heart is in atrial fibrillation when said atrial fibrillation detecting means is activated, said atrial fibrillation detecting means having a normally deactivated state;

    cardioverting means coupled to said lead means and being responsive to said atrial fibrillation detecting means detecting atrial fibrillation of the heart for applying cardioverting electrical energy to the atria of the heart to cardiovert the atria of the heart; and

    timing means for activating said atrial fibrillation detecting means at spaced apart predetermined times.

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