A tissue resection device for preferred use in an organ inflated with non-conductive optically transparent fluid under pressure is disclosed. The instrument includes a rigid shaft having a proximal end, a distal end, and defining a perfusion lumen extending therebetween. At the distal end of the shaft,...http://www.google.es/patents/US5456689?utm_source=gb-gplus-sharePatente US5456689 - Method and device for tissue resection
