Patent ID: 6253106
Filing Date: 2001-06-26
Classification: A61N

Abstract:
An active implantable medical device, of a cardiac pacemaker, defibrillator and/or cardiovertor type, in which electrodes are to be placed in at least three myocardial stimulation sites (12, 14, 20, 22), of which at least one site is a ventricular stimulation and ventricular detection site (14, 22), the electrodes being connected to corresponding independent outputs (DA, DV, Da1, Dv2) of the device, in a manner as to allow the application of low-energy stimulation pulses produced by a plurality of distinct stimulation stages (24, 26, 28, 30), the plurality of stimulation stages comprising a number of stages that is at most equal to said at least three stimulation sites, said device characterized in that it comprises commutation means (SA, SV, S1, S2) to connect selectively and according to a plurality of possible configurations the stimulation stages for stimulation, or a selected one of the stimulation stages, to the various stimulation sites, or to a selected one of the stimulation sites, and means for controlling the commutation means to modify the stimulation configuration in a manner as to research an optimal configuration.