Disclosed is a permanently implantable cardioverter, or defibrillator including built-in interrogation and testing circuitry. Implanted fault detection circuits react to malfunctions in the implanted fibrillation detection circuitry, and ensure that inappropriate defibrillation pulses are not delivered...http://www.google.es/patents/US4164946?utm_source=gb-gplus-sharePatente US4164946 - Fault detection circuit for permanently implanted cardioverter
Fault detection circuit for permanently implanted cardioverter
