Patent ID: 6748255
Filing Date: 2004-06-08
Classification: A61B

Abstract:
A catheter comprising:an elongated catheter body having proximal and distal ends and at least one lumen therethrough; a basket-shaped electrode assembly at the distal end of the catheter body, the basket-shaped assembly having proximal and distal ends and comprising a plurality of spines connected at their proximal and distal ends, the spines comprising a plurality of electrodes, the basket-shaped assembly having an expanded arrangement wherein the spines bow radially outwardly and a collapsed arrangement wherein the spines are arranged generally along the axis of the catheter body; and a distal electrode location sensor mounted at or near the position where the distal ends of the spines are connected, and a proximal electrode location sensor mounted at or near the proximal end of the basket-shaped assembly, whereby, in use, the coordinates of the distal electrode location sensor relative to those of the proximal electrode location sensor can be determined and taken together with known information pertaining to the curvature of the spines of the basket-shaped assembly to find the positions of each of the plurality of electrodes on the spines.