INDEPENDENT CARDIAC IMPLANT OF 'CAPSULE LEADLESS' TYPE, WITH DETECTION OF THE EARLY ACTIVITY BY ANALYSIS OF THE RECHARGEABLE ELECTRICAL SIGNAL DELIVERED BY AN ENERGY RECOVERY MODULE

摘要

An energy recuperator converts the external stresses applied to the implant to the rhythm of the heartbeats into electrical energy. This recuperator comprises an inertial assembly and a transducer delivering an oscillating electrical signal (S) which is rectified and regulated to ensure the supply of the implant and the recharging of an energy storage member. The instantaneous variations of this electrical signal (S) are analyzed in a detection window (W2) following or preceding a ventricular contraction (V), so as to obtain an atrial activity information representative of the contribution (CA1, CA2, CA3 ) from the atrium to the electrical signal, including information on the presence / absence of spontaneous atrial contraction (As), and / or parameters for determining an atrioventricular delay (AVD) to be applied if the ventricle is to be stimulated (Vp ).