An over shoe for use with electrosurgical instruments having a pair of juxtaposed jaw members pivotably associated with one another, at least one of which includes an electrically conductive surface disposed thereon which is in electrical engagement with an electrosurgical energy source. According to...http://www.google.de/patents/US7442193?utm_source=gb-gplus-sharePatent US7442193 - Electrically conductive/insulative over-shoe for tissue fusion
