The present invention provides systems and methods for selectively applying electrical energy to a target location within a patient's heart to remove calcified deposits and fibroid material from valve leaflets. The method of the present invention comprises positioning an electrosurgical probe or catheter...http://www.google.se/patents/US6047700?utm_source=gb-gplus-sharePatent US6047700 - Systems and methods for electrosurgical removal of calcified deposits
