An electrosurgical hemostatic instrument is provided in which the coagulation status of tissue engaged by two elements delivering an electrosurgical energy to tissue may be observed, and in which damage from thermal spread may be minimized. A preferred embodiment of the invention provides a bipolar endoscopic...http://www.google.es/patents/US5599350?utm_source=gb-gplus-sharePatente US5599350 - Electrosurgical clamping device with coagulation feedback
Electrosurgical clamping device with coagulation feedback