Abstract: An implantable electrical heart defibrillation system for both ventricle and atrium is proposed and is characterized in that it acts in a manner such as:

Abstract: An implantable electrical heart defibrillation system for both ventricle and atrium is proposed and is characterized in that it acts in a manner such as:

Abstract: An implantable electrical heart defibrillation system for both ventricle and atrium is proposed and is characterized in that it acts in a manner such as:to diagnose the type of arrhythmia within a maximum time of 2 seconds from the onset of the arrhythmia;to deliver the therapeutic shock by electrodes implanted in the region to be defibrillated no more than 4-5 seconds after the recognition of the arrhythmia, if it is ventricular fibrillation, so that the patient does not loose consciousness;immediately after the onset of the arrhythmia and before the defibrillation shock is delivered, to prevent the conduction of neural pain signals coming from the region in which the electric shock acts, by nerve stimulation by a catheter inserted in the spinal column, utilizing the gate effect, or by the perfusion of a drug with immediate analgesic effect by an infusion pump and a catheter positioned in the region affected by the pain signals.

Abstract: The invention provides an automatic implantable defibrillator with the following essential characteristics: a) reliable recognition of a ventricular fibrillation state by noting mechanical ventricular systole noise and taking action if absent; b) effecting defibrillation not by electrical pulses fed to the heart but by a bolus of medicaments (or solutions under particular physical conditions, such as a cold bolus at 30.degree. C.) fed by a hydraulic system into the coronary sinus by a retrograde path to obtain an artificial circulation so as to rapidly pervade the coronary circuit. The symbol A.I.Ph.D. (Automatic Implantable Pharmacological Defibrillator) is proposed (D.A.I.F., Defibrillatore Automatico Impiantabile Farmacologico, in Italian).