Patent ID: 6711428
Filing Date: 2004-03-23
Classification: A61B,A61M,A61N

Abstract:
A mapping catheter comprising:an elongated tubular catheter body having an outer wall, proximal and distal ends, and at least one lumen extending therethrough; and a mapping assembly comprising: a tubular structure comprising a generally circular main region generally transverse and distal to the catheter body and having an outer circumference and a generally straight distal region distal to the main region, wherein the tubular structure comprises a non-conductive cover over at least the main region of the mapping assembly, a support member having shape-memory disposed within at least the main region of the mapping assembly, and a plurality of electrode pairs, each comprising two ring electrodes, carried by the generally circular main region of the mapping assembly, wherein at least some of the ring electrodes of the electrode pairs have a length ranging from about 0.4 mm to about 0.75 mm.