The living tissue by the action of the energy treatment instrument for performing a treatment , first and second clamping member is supported by the first holding member to the first direction and the first direction as a fulcrum pivot shaft Te and rotating member rotatable in a second direction opposite to the limiting unit for limiting the rotation of the one of said first and second directions of the rotating member , said rotating member of the a first gripping surface for gripping the living tissue is provided on the side close to the second clamping member , the second gripping for gripping the in cooperation with living tissue and are the first gripping surface provided on the second clamping member I have a face , and a projection to form a gap between the first and second gripping surface in the closed state of the first and second gripping faces . .生体組織にエネルギを作用させて処置を行うための処置具は、第1及び第2挟持部材と、前記第1挟持部材に支持され回動軸を支点として第1方向及び前記第1方向に対して反対側の第2方向に回動可能な回動部材と、前記回動部材の前記第1方向及び第2方向のうちの一方への回動を制限する制限部と、前記回動部材のうち前記第2挟持部材に近接する側に設けられ生体組織を把持する第1把持面と、前記第2挟持部材に設けられ前記第1把持面と協働して生体組織を把持する第2把持面と、前記第1及び第2把持面同士を閉じた状態で前記第1及び第2把持面間に隙間を形成する突部とを有する。
