PROBLEM TO BE SOLVED: To easily attach and detach an insertion part of an endoscope to and from a distal end part, and enough secure hooking force of a bowel by the distal end part by making strong the fixed state to the distal end part of the insertion part so that the insertion part can be smoothly inserted in a depth part.SOLUTION: A distal end cap device 1 for an endoscope includes: a cap body 3 fitted to the tip side of an insertion part 6 a connection tube 4, one end of which is connected to the cap body 3 and the other end of which is connected to a suction device 5 for sucking a fluid a lumen holding part 3A provided on the outer peripheral side of the cap body 3 an endoscope holding part 3B provided on the inner peripheral side of the cap body 3 an internal conduit 25 provided in the interior of the cap body 3 for connecting the lumen holding part 3A and one end side of the connection tube 4 and the endoscope holding part 3B and one end side of the connection tube 4 to communicate with each other and a check valve 23 provided in the internal conduit 25 to secure a passage for a fluid so that before the lumen holding part 3A holds the insertion part 6 on the inner wall of the lumen, the outer peripheral surface of the insertion part 6 is held by the endoscope holding part 3B.COPYRIGHT: (C)2014,JPO&INPIT【課題】内視鏡の挿入部の先端部への着脱を容易にするとともに、挿入部の先端部との固定状態を強くして先端部による腸管のフッキング力を十分に確保することができ、挿入部を深部に円滑に挿入する。【解決手段】本発明の内視鏡用先端キャップ装置1は、挿入部6の先端側に取り付けられるキャップ本体3と、一端側がキャップ本体3に接続され、他端側が流体を吸引する吸引装置5に接続される接続チューブ4と、キャップ本体3の外周側に設けられた管腔保持部3Aと、キャップ本体3の内周側に設けられた内視鏡保持部3Bと、キャップ本体3の内部に設けられ、管腔保持部3Aと接続チューブ4の一端側と、内視鏡保持部3Bと接続チューブ4の一端側とをそれぞれ連通するように接続した内部管路25と、内部管路25に設けられ、管腔保持部3Aが挿入部6を管腔の内壁に保持する前に、内視鏡保持部3Bにより挿入部6の外周面を保持するように流体の流路を確保する逆止弁23と、を有する。【選択図】図1
