The disclosure relates generally to cryogenic techniques the mapping and ablation of arrhythmias or tachycardia in atrial or ventricle heart muscles and, more particularly, to an epicardial approach which either addresses the heart directly through an open chest or employs transcutaneous...http://www.google.com/patents/US5733280?utm_source=gb-gplus-sharePatent US5733280 - Cryogenic epicardial mapping and ablation
