The present invention is directed to a bipolar electrosurgical end effector for use in medical instruments. A bipolar end effector according to the present invention includes a tissue slot and electrodes arranged on either side of the tissue slot. The opposing electrodes are electrically connected such...http://www.google.se/patents/US6296640?utm_source=gb-gplus-sharePatent US6296640 - RF bipolar end effector for use in electrosurgical instruments