PROBLEM TO BE SOLVED: To provide an obturator not having an attached/detached separate part, allowing one-handed release of a state that a bumper is slenderly extended, and being able to prevent a situation of excessively pushing in the bumper.SOLUTION: An obturator 1 pinches a catheter 100 in a catheter pinch part 13 of the tip of an outer tube part 10, pushes an intermediate shaft part 20 inserted in the outer tube part 10 into the outer tube part 10, and slenderly extends a bumper 102 by a rod 22. A length of the rod 22 projecting from the tip of the outer tube part 10 is restricted by locking a stopper 23 annularly mounted to an operation shaft 21 to a locking groove 25 of the operation shaft 21, and movement of the intermediate shaft part 20 to a direction to which the rod 22 retreats into the outer tube part 10 is locked by locking a movable lock claw 12 provided near a holding part 11 of the base end side of the outer tube part 10 to the locking groove 25.COPYRIGHT: (C)2015,JPO&INPIT【課題】着脱する別体のパーツがなく、バンパーを細長く延ばした状態を片手で解除でき、バンパーを過度に押し込む事態を防止できるオブチュレーターを提供する。【解決手段】オブチュレーター1は、外筒部10の先端のカテーテル挟持部13にカテーテル100を挟持し、外筒部10に挿着されている中軸部20を外筒部10に押し込んで、ロッド22によってバンパー102を細長く伸ばす。ロッド22が外筒部10の先端から突き出る長さは、操作軸21に環装されたストッパー23を操作軸21の係止溝25に係止させて制限し、ロッド22が外筒部10内に引っ込む方向への中軸部20の動きを外筒部10の基端側の保持部11の近傍に設けた可動ロック爪12を係止溝25に係止させてロックする。【選択図】図1
