Patent ID: 6522905
Filing Date: 2003-02-18
Classification: A61B

Abstract:
A cardiac catheterization system for operation on an endocardium of a subject's heart, comprising:a cluster of electrodes disposable by a catheter about the endocardium site-by-site; each electrode detecting intracardiac electrogram signals including that emanating from a tachycardia site of origin; a storage for storing the detected intracardiac electorgram signals accumulated site-by-site; a computer to derive from each said detected intracardiac electrogram signals an arrival time thereof and to form a map based on the arrival times derived from existing detected sites; and means for interactively displaying said map, said map including locations of existing detected sites and a current location of said cluster of electrodes, whereby those electrodes being closer to the tachycardia site of origin than others will be in a region of said map having earlier arrival times than others, and electrodes that are substantially coincident with the tachycardia site of origin will be in a region of said map having an earliest possible arrival time, thereby said map providing guidance for moving said cluster of electrodes towards the region having earlier arrival times.