An electrical coupling unit for electrically connecting an outlet of non-sterile electrosurgical apparatus to a sterile electrosurgical handpiece. The coupling unit is sterile, and can be provided at a location convenient to the surgeon. The coupling unit is also provided with plural outputs for connecting...http://www.google.ca/patents/US5342356?utm_source=gb-gplus-sharePatent US5342356 - Electrical coupling unit for electrosurgery
