PROBLEM TO BE SOLVED: To provide a cleaning brush for an endoscope for preventing the chipping of an opening part of a conduit in cleaning the conduit.SOLUTION: A cleaning tool includes: a shaft 26 which has a distal end and a proximal end and is long and flexible bristles 27 of a brush which are provided on the distal end of the shaft 26 and are brought into contact with the inside of the conduit an enlarged diameter part 30 which has a diameter enlarged in a radial direction of the shaft 26 from the vicinity of the proximal end of the shaft 26 and is smaller than an opening area of the opening part of the conduit a locking member 28 which is provided on a side farther distal than the enlarged diameter part 30 in the shaft 26, has a hole part 28a where the shaft 26 is inserted and which makes the locking member movable relative to the shaft 26 and a contact surface 32a which protrudes in the radial direction of the shaft 26 and can make contact with the enlarged diameter part 30, and can lock to an inner edge part of the opening part of the distal end side of the conduit and a movement suppressing part 29 which is provided on the shaft 26, has a joining surface 33 joined to an inner peripheral surface of the hole part 28a of the locking member 28, is configured to separate the joining surface 33 from the inner peripheral surface of the locking member 28 when the shaft 26 is pulled in a direction to the distal end of the conduit by traction force of the prescribed strength.COPYRIGHT: (C)2014,JPO&INPIT【課題】 管路洗浄中において管路開口部の削れを防ぐ内視鏡用洗浄ブラシの提供。【解決手段】 先端と基端とを備え、長尺で可撓性を有するシャフト26と、シャフト26の先端に設けられ、管路内に接触するブラシ毛27と、シャフト26の基端付近からシャフト26の径方向に拡径し、管路開口部の開口面積よりも小さい拡径部30と、シャフト26において拡径部30よりも先端側に設けられ、シャフト26が挿通され、シャフト26に対して移動可能とする孔部28aと、シャフト26の径方向に突出し、拡径部30と当接可能な当接面32aを有し、管路の先端側の開口部の内縁部に係止可能な係止部材28と、シャフト26に設けられ、係止部材28の孔部28aの内周面と接合する接合面33を有し、管路の先端方向へ所定の大きさの牽引力によりシャフト26が牽引されると、接合面33が係止部材28の内周面から分離される移動抑止部29と、を具備する洗浄具。【選択図】図8
