Patent ID: 8712526
Filing Date: 2014-04-29
Classification: A61N

Abstract:
1. Apparatus for seeking an optimal configuration of stimulation through an active medical device ( 10 ) by resynchronization pacing of at least two ventricular pacing sites, comprising: Means for delivering pacing pulses ( An acceleration sensor having an output endocardial acceleration (EA) signal representative of the cyclic contractions and relaxations of a patient's heart; and Means for isolating and preprocessing in the EA signal during one cardiac cycle between two successive ventricular events: (i) an EA1 component corresponding to the first peak of endocardial acceleration associated with the isovolumetric ventricular contraction, and (ii) an EA2 component corresponding to the second peak of endocardial acceleration associated with the isovolumetric ventricular relaxation, means ( 40 ) for evaluating an effectiveness of said current pacing configuration, including: Means for extracting at least two characteristic parameters from the isolated and pre-processed EA1 and EA2 components: Wherein: Wherein said composite index is an index selected from among the group consisting of: Wherein said optimum composite index comprises a minimum of said selected index.