DEVICE AND METHOD FOR DYNAMIC MAPPING BY INTRACARDIAC ELECTROGRAM OVERLAY NAMELY FOR DIAGNOSIS OR TREATMENT OF ATRIAL FIBRILLATION

摘要

Device and method for dynamic mapping of intracardiac electrograms for use in diagnosis or treatment of abnormal cardiac electrical activity, in particular atrial fibrillation, the device comprising: a multipolar mapping intracardiac catheter for reading intracardiac electrical signals distributed over the atrium, and a digital data processor configured for, carry out the method of, sequentially over a period of time: capturing substantially simultaneous intracardiac electrical signals read by the intracardiac catheter and distributed over the atrium; scanning and storing the intracardiac electrical signals captured; and three-dimensionally mapping the intracardiac electrical signals in relation to the corresponding anatomical location in the heart cavity; subsequently overlaying said three-dimensional maps obtained over the period of time. The overlay of the maps can be obtained by time acceleration of the sequence of maps obtained over the period of time, or by the sum, arithmetic mean, or by a measure of central tendency of said maps.