treatment tool for the recovery of body fluids (1), the major axis member having a longitudinal axis (2) a curved portion formed on the distal end side of the long shaft member (2) and (3), a lumen formed along the longitudinal axis of the long shaft member (2) and communicates with said lumen , when it is bent the bent portion (3) and has an opening to the through hole (4), towards the inside of the curvature of the curved part (3).体液を回収する処置具(1)は、長手軸を有する長軸部材(2)と、該長軸部材(2)の先端側に形成された湾曲部(3)と、前記長軸部材(2)の長手軸に沿って形成されたルーメンと、該ルーメンに連通し、前記湾曲部(3)を湾曲させた際、前記湾曲部(3)の湾曲の内側に向けて開口された貫通孔(4)と、を有する。