System, device and method for ablating target tissue adjacent pulmonary veins of a patient through an incision. An ablation device can include a hinge including a cam assembly, a moving arm, a floating jaw, and a lower jaw. Fingers can engage the floating jaw to hold the floating jaw in a first position...http://www.google.co.uk/patents/US7875028?utm_source=gb-gplus-sharePatent US7875028 - Ablation device with jaws