PROBLEM TO BE SOLVED: To provide a treatment device capable of performing treatment of blocking a lumen of a living body efficiently.SOLUTION: A treatment device includes a shaft (long body) 18 which can be inserted to a lumen of a living body, a flat part formation part 22 which forms a flat part in the lumen of a living body according to an expansion in the lumen of a living body, a tip opening 18a (hardener supply part) which supplies hardener M to a flat part F of the lumen of a living body, and a balloon 104 (closing part) which is supported by the flat part formation part 22 and can close temporarily a lumen of the flat part F according to an expansion.COPYRIGHT: (C)2016,JPO&INPIT【課題】生体管腔を閉塞する処置を効率的に行うことができる治療デバイスを提供する。【解決手段】生体管腔内に挿入可能なシャフト18(長尺体)と、生体管腔内での拡張に伴って生体管腔に扁平部分を形成する扁平形成部22と、生体管腔の扁平部分Fに向けて硬化剤Mを供給する先端開口18a(硬化剤供給部)と、扁平形成部22に支持され、拡張することに伴って扁平部分Fの内腔を一時的に閉塞可能なバルーン104(閉塞部)と、を備える。【選択図】図25
