Patent ID: 8554313

Claim:
A device for analyzing an endocardiac acceleration EA signal (“EA signal”), including a processor having an input EA signal corresponding to a plurality of cardiac cycles and an output having at least one characteristic data correlated to temporal parameters of at least one cardiac cycle and/or to the hemodynamic performances of the myocardium, Wherein the improvement comprises: means for preprocessing said input EA signal further comprising; means for determining markers of a beginning of a cardiac cycle, means for cutting a sequence of said input EA signal into a plurality of isolated EA sub-signals (“EA sub-signals”) based on said determined markers, each isolated EA sub-signal having a duration of one cardiac cycle; means for identifying in each of said plurality of isolated EA sub-signals at least one EAx component associated with one of the major cardiac sounds; and means for extracting a characteristic of said EAx component for each of said plurality of cycles, and calculating a correlation coefficient correlating said extracted characteristic of one of said plurality of cycles and said extracted characteristic of said other of said plurality of cycles, and performing temporal retiming of each of the plurality of isolated EA sub-signals relative to said correlation coefficient so as to deliver a readjusted EAx component associated with each of said plurality of isolated EA sub-signals.