IMPLANTABLE ACTIVE MEDICAL DEVICE, IN PARTICULAR CARDIAC STIMULATOR, DEFIBRILLATOR OR CARDIOVERTER WITH AUTOMATIC ADJUSTMENT OF THE LEVEL OF STIMULATION PULSES

摘要

P This device comprises stimulation means for delivering low energy electrical pulses to the heart for the treatment of cardiac rhythm disorders, these pulses having a predetermined amplitude and duration, and means for adjusting the amplitude. stimulation pulses, comprising means for automatically measuring the capture threshold operating at predetermined intervals and delivering in response a stimulation threshold value serving as a basis for adjusting the stimulation amplitude. The amplitude adjustment means comprise means (20, 30, 50) for validating the threshold value, capable of operating a consistency test between the last measured threshold value and at least one of the threshold values. previously measured, and to inhibit the change in the amplitude level of the stimulation pulse in case of a negative result of this coherence test. / P