An implantable atrial defibrillator having an intermettently activated fibrillation detector.

摘要

An implantable automatic atrial defibrillator (30) powered by a depletable battery power source (92) conserves battery power for extending the predicted life of the defibrillator by intermittently detecting for atrial fibrillation. The atrial defibrillator includes a timer (90) which, at spaced apart predetermined times, causes heart activity data to be stored in a memory. Thereafter, a normally deactivated atrial fibrillation detector (70) is activated for processing the stored data to detect for atrial fibrillation. <IMAGE>