PROBLEM TO BE SOLVED: To provide a surgical treatment instrument which serves as a bipolar electrocautery, the surgical treatment instrument tightly grasping a biological tissue and performing satisfactory energization on the biological tissue.SOLUTION: The surgical treatment instrument includes a gripper mechanism 19 composed of a pair of gripper pieces 19a and 19b which can be opened and closed so as to grasp the biological tissue and at least one of which is a movable part. The gripper pieces 19a and 19b includes: grasping parts 77a and 77b respectively, each of the grasping parts having a grasping surface 82 where anti-slipping recess and projection 82a with respect to the biological tissue is formed and electrodes 80a and 80b which are held by the grasping parts 77a and 77b respectively, each of the electrodes having a smooth surface 83 formed on a side contacting with the biological tissue.COPYRIGHT: (C)2012,JPO&INPIT【課題】バイポーラ電気メスとして機能する外科用処置具であって、生体組織をしっかりと把持でき、且つ生体組織に対して良好な通電を行うことができる外科用処置具を提供する。【解決手段】外科用処置具は、生体組織を把持するように開閉可能であり、少なくとも一方が可動部として構成された一対のグリッパ片19a、19bからなるグリッパ機構19を備える。各グリッパ片19a、19bは、生体組織に対する滑り止め用の凹凸82aが形成された把持面82を有する把持部77a、77bと、把持部77a、77bに保持され、生体組織と接触する側に平滑面83が形成された電極部80a、80bと、を備える。【選択図】図3
