An ablation method and device contacts one surface of a target layer and positions the tissue to ablate entirely through the layer. The tissue may be a wall of the heart (ablated, for example, to form blocking lesions for atrial fibrillation), and ablation may be performed with the heart stopped or beating,...http://www.google.de/patents/US20030069572?utm_source=gb-gplus-sharePatent US20030069572 - Transmural ablation tool and method
