System and method for matching electrical characteristics and propagation velocities in cardiac tissue to locate potential ablation sites
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United States of America Patent
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Aug 20, 1996
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Aug 22, 1995
filing date -
Jan 28, 1994
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Abstract
Systems and methods examine heart tissue morphology for the purpose of locating a potential ablation site. The systems and methods derive the electrical characteristic of tissue lying between the electrode pairs based, at least in part, upon sensing tissue impedances. The systems and methods also sense the timing of local depolarization events in the tissue in which impedance is sensed and derive therefrom the propagation velocities of the sensed depolarization events. The systems and methods match the derived tissue electrical characteristics with the derived propagation velocities in spatial relation to the electrodes to characterize the morphology of the contacted heart tissue to identify a potential ablation site.
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