A nerve locator and stimulator which can be used, for example, for human surgery which allows a probe having an insulated tip with an extendible contact which can be used to contact surgical tissue so as to locate a nerve. A second contact is provided with an atraumatic grounding pad and the two contacts...http://www.google.es/patents/US4962766?utm_source=gb-gplus-sharePatente US4962766 - Nerve locator and stimulator
