A process for the treatment of atrial arrhythmia by use of ablation procedures comprising circumferential ablation of vessels, particularly pulmonary veins, associated with the left atrium of the heart. Also medical devices for such process including a pair of balloons secured to a catheter with one...http://www.google.com/patents/US6540744?utm_source=gb-gplus-sharePatent US6540744 - Process and device for the treatment of atrial arrhythmia