Patent ID: 6370435
Filing Date: 2002-04-09
Classification: A61B,A61N

Abstract:
A system for examining tissue within a heart, comprising:an invasive device for locating a plurality of electrodes within the heart for contact with heart tissue; a generator operable in one mode for transmitting eletrical current in a first path through heart tissue in a region located between a first pair of electrodes, at one of which is carried by the invasive device with the heart, the generator being operable in mode for transmitting eletrical current in a second path through heart tissue in a region located between a second pair of eletrodes, at least one of which is carried by the invasive device within the heart; and a processor configured for deriving eletrical characterics of the heart tissue based, at least in part, upon impedances of the respective heart tissue regions in the first and second paths, and further for deriving iso-characteristic data from the heart tissue impedances.