The invention provides devices and methods for performing less-invasive surgical procedures within an organ or vessel. In an exemplary embodiment, the invention provides a method of closed-chest surgical intervention within an internal cavity of a patient's heart or great vessel. According to the method,...http://www.google.es/patents/US5571215?utm_source=gb-gplus-sharePatente US5571215 - Devices and methods for intracardiac procedures
