Patent ID: 7561907

Claim:
A catheter comprising: an elongated catheter body having a proximal end, a distal end and at least one lumen extending longitudinally therethrough; and a mapping assembly mounted at the distal end of the catheter body and comprising from 3 to 8 spines, each spine having a proximal end attached at the distal end of the catheter body and a free distal end, wherein each spine comprises: a support arm having shape memory; a non-conductive covering in surrounding relation to the support arm; at least one location sensor mounted at or near the distal end of the spine; a tip electrode mounted at or near the distal end of the spine and electrically isolated from the support arm; at least one ring electrode mounted in surrounding relation to the non-conductive covering; and a plurality of electrode lead wires extending within the non-conductive covering, each electrode lead wire being attached to a corresponding one of the tip electrode and ring electrode.