SYSTEMS AND METHODS FOR ELECTROSURGICAL REMOVAL OF CALCIFIED DEPOSITS

摘要

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 (10) adjacent the target site so that one or more electrode terminals (58) are brought into at least partial contact or close proximity with the target heart valve. High frequency voltage is then applied between the electrode terminals, and one or more return electrodes (112) to volumetrically remove or ablate at least a portion of the calcified material while minimizing damage to the heart valve, and substantially preserving the elastic fiber layer of the valve leaflets.