The bipolar treatment apparatus includes a probe including a distal end surface portion having an outer peripheral tip of an outer peripheral portion as an outer edge, and a passage defining surface that defines an aspiration passage along the longitudinal axis to the distal end surface portion. The probe includes a first projecting portion that projects the outer peripheral tip of the outer peripheral portion in a first vertical direction perpendicular to the longitudinal axis and perpendicular to the jaw opening and closing direction. The tip surface portion of the probe is located on the tip direction side from the first vertical direction toward the second vertical direction that is opposite to the first vertical direction, and the first protrusion An inclined surface that extends from a first end position on the first vertical direction side to a second end position on the second vertical direction side from the suction passage from a first base position that is a root position of the portion. Is provided.バイポーラ処置装置は、外周部の外周先端を外縁とする先端表面部と、前記先端表面部まで前記長手軸に沿って吸引通路を内部に規定する通路規定面とを備えるプローブを備える。前記プローブは、前記長手軸に垂直かつジョーの開閉方向に垂直な第１の垂直方向に向かって前記外周部の前記外周先端を突出させる第１の突出部を備える。また、前記プローブの前記先端表面部は、前記第１の垂直方向から前記第１の垂直方向とは反対方向である第２の垂直方向に向かうにつれて先端方向側に位置し、前記第１の突出部の根元位置である第１の根元位置より前記第１の垂直方向側の第１の端位置から前記吸引通路より前記第２の垂直方向側の第２の端位置まで延設される傾斜面を備える。
