A medical device for use in delivering RF energy to a tissue opening is disclosed. In one embodiment, the medical device comprises a compliant electrode. The compliant electrode can include a shape memory material, such as NITINOL, to facilitate the electrode having at least one relaxed orientation....http://www.google.de/patents/US7799023?utm_source=gb-gplus-sharePatent US7799023 - Compliant electrode for patent foramen ovale closure device
