SYSTEM AND METHOD FOR PERFORMING CARDIAC TISSUE ABLATION

摘要

A method of forming a lesion at a predetermined heart location is provided. An energy-delivering electrode (120) is positioned proximal to the predetermined heart location; a return electrode (110) is positioned in contact with cardiac tissue. An electrosurgical current, capable of delivering energy through the energy-delivering electrode (120) to the predetermined heart location (100) at a magnitude and for a duration effective to form a lesion is established. A system for treating atrial fibrillation by forming transmural lesions and a heart-positioning device including a return electrode are also provided.