LEADLESS CAPSULE TYPE AUTONOMOUS CARDIAC IMPLANT COMPRISING AN ENERGY RECOVERY PROVIDING INFORMATION ON THE PHYSIOLOGY OR ACTIVITY OF THE PATIENT

摘要

An energy recovery converts the external stresses applied to the implant at the same rhythm as the heartbeats into electrical energy. Said recovery comprises an inertial assembly. A transducer provides an oscillating electrical signal (S) that is rectified and regulated to provide power to the implant and/or to recharge a battery. The instantaneous variations of said electrical signal (S) between two heartbeats are analysed within successive time windows (F1, F2, F3), to deduce a physiological parameter and/or a physical activity parameter of the patient carrying the implant, particularly according to an amplitude peak (PSE) of the first oscillation of the electrical signal (S), and the level of said signal after the rebound phase (Ø1) of the oscillation of the signal.