The active implantable medical device, in particular a cardiac pacemaker defibrillator or cardiovertor type has automatic adjustment of the level of the stimulation pulses

摘要

This device comprises means of a stimulation, in order to deliver to the core of the electrical pulses of low energy, for the treatment of heart rhythm disorders, these pulses having an amplitude and a predetermined period, and means for adjusting the amplitude of the stimulation pulses, comprising means for automatically measuring the capture threshold operating at predetermined intervals and delivering, in response, a threshold value of stimulation, serving as base for the adjustment of the amplitude of the stimulation. The amplitude adjustment means comprise means (20, 30, 50) of the validation of the threshold value, adapted to carry out a test of coherence between the last threshold value measured and at least one of the corresponding threshold values previously measured, and to inhibit the modification of the level of the amplitude of the stimulation pulse in the case of a negative result of this test of the coherence.