An intravascular electrophysiology (EP) device for the mapping and/or formation of lesions along the isthmus region of a heart that has particular utility in the treatment of atrial flutter. The EP device of the invention has an elongated shaft with a proximal section, a compound-curved or modified pigtail-shaped...http://www.google.fr/patents/US6746446?utm_source=gb-gplus-shareBrevet US6746446 - Electrophysiological device for the isthmus
