Active implantable medical device, in particular heart stimulator, defibrillator or cardioverter, the controlled and in front of the effects of brady - and / or extrasystoles tachyabhängigen is protected

摘要

This device comprises means for analyzing activity, which is able to evaluate the level of activity of the patient wearing the device and to discriminate between the phases of rest (i), of normal activity (ii) and of force (iii), the stimulation means of at least a heart cavity, able to deliver to the core of the electric pulses to a base frequency is determined by the device; and means adapted to adjust the frequency of the base as a function of the level of activity is determined by the analysis means of activity, this base frequency (f) can be lowered to a given minimum level (fs) during a rest phase (i). It is also provided with means for detecting the occurrence of extra-systoles bradydépendantes and evaluation of the corresponding extrasystole, and means capable of raising the minimum level of the base frequency when the extrasystole exceeds a preset threshold for the rest phase. The present invention also makes it possible, mutatis mutandis, the treatment of the effects of extra-systoles tachydépendantes.