PROBLEM TO BE SOLVED: To provide a device for a digestive tract, that hardly bursts and is hardly removed even when a digestive tract moves.SOLUTION: The device 100 for a digestive tract includes: a cylinder part 110 having a through-hole 111 a first expansion part 130 which is arranged on the penetration-direction proximal end side of the cylinder part 110 and inside which a first space part 132 for storing a fluid is formed a second expansion part 140 which is arranged on the penetration-direction proximal end side of the cylinder part 110 and closer to a distal end side compared with the first extension part 130 and inside which a second space part 142 for storing the fluid is formed a flow passage part 170 which communicates the first space part 132 and the second space part 142 with each other and allows the fluid to be movable therein and an expansion limiting part 180 for limiting the expansion of the second expansion part 140.COPYRIGHT: (C)2013,JPO&INPIT【課題】消化管が運動しても破裂し難く、かつ外れ難い消化管用デバイスを提供する。【解決手段】貫通孔111を備える筒部110と、前記筒部110の貫通方向の基端側に設けられるとともに流動体が収容される第1空間部132が内部に形成される第1拡張部130と、前記筒部110の貫通方向の基端側に前記第1拡張部130よりも先端側に設けられるとともに流動体が収容される第2空間部142が内部に形成される第2拡張部140と、前記第1空間部132および第2空間部142を連通させて前記流動体が移動可能な流路部170と、前記第2拡張部140の拡張を制限する拡張制限部180と、を有する消化管用デバイス100である。【選択図】図2
