In order the wall of in vivo (190) the occasion where the stab it does, stab place (192) to avoid the damage of the internal organs which are located inside, in order ahead the needle (112) stab place (192) from not to come out with the operation which projects after the stab completing ahead the needle (112) the Interpolation which is guarded the component (130) in beresunidoru which it has, the Interpolation the component (130) the Tip (134) the lumen (118) from, the coming out prevention means which possess the crookedness form due to elastic deformation (105) it provides.生体内の壁部(190)を穿刺した際に、穿刺箇所(192)の内側に位置する臓器の損傷を避けるため、針先(112)をガードする挿通部材(130)を備えたベレスニードルにおいて、穿刺完了後に挿通部材(130)の先端部(134)がルーメン(118)から突出する動作によって、針先(112)が穿刺箇所(192)から抜けないよう、弾性変形による屈曲形状を有する抜け防止手段(105)を設ける。
