Patent ID: 6892091
Filing Date: 2005-05-10
Classification: A61B

Abstract:
1. A catheter and console combination for mapping a chamber of a heart comprising: a console comprising driver circuits operatively connected to at least one electromagnetic field generator for generating an electromagnetic field, the console also comprising a signal processor for determining location information; a catheter comprising: (i) a body having a proximal end and a distal end, said distal end having a distal tip; (ii) a contact electrode at said distal tip; (iii) an array of non-contact electrodes on said distal end of said body, said array having a proximal end and a distal end, wherein said non-contact electrodes are linearly arranged along a longitudinal axis of said body; and at least one location sensor on said distal end of said body for generating signals in response to the electromagnetic field which is used by the signal processor to determine a location of said contact electrode and a location of said non-contact electrodes, the location of the non-contact electrodes determined by said signal processor from said signals generated by said at least one location sensor, said signal processor during at least an entire cardiac cycle in a first mode of operation acquiring first electrical information from only said non-contact electrodes, and in a second mode of operation acquiring second electrical information from said contact electrode and said non-contact electrodes to represent a minimum volume of the chamber geometry of the heart.