Endoscopic bipolar scissor blades are formed in a laminate assembly of an electrically conductive electrode, an electrically insulating material, and a metal shearing surface which is electrically insulated and physically spaced from the electrode by the insulating material which is disposed therebetween....http://www.google.com.au/patents/US7063697?utm_source=gb-gplus-sharePatent US7063697 - Bipolar endoscopic surgical scissor blades and instrument incorporating the same
