< Topic >The blocker of the lumen of in vivo is dug safely, at the same time from efficiently, excavation ones which are removed the catheter which has the removal feature which it can discharge easily, is offered to outside the body.SolutionsIt possesses the lumen which expands inside, it possesses the lumen which expands the sheath and inside it is interposed in the lumen of in vivo, sleeve unrestricted, at the same time the Interpolation which revolution possibly is laid out component removal feature 140 in order to remove the blocker of the lumen of 120 and in vivo and, it is the catheter which it possesses in the lumen of aforementioned sheath. In order the Interpolation the supporter 142 who is laid out in the Tip of component 120 and the Interpolation to surround around the axis of component 120, multiple body of revolution 152A it is laid out in supporter 142 - 152C and, it possesses removal feature 140. Body of revolution the edge and the Interpolation which dig the blocker the revolving shaft which is extended in the axis of component 120 and the direction which is crossed and, has 152A - 152C.< Choice figure >Drawing 4【課題】生体内の管腔の閉塞物を安全に、かつより効率的に掘削し、除去された掘削物を体外へ容易に排出し得る除去機構を備えたカテーテルを、提供する。【解決手段】内部を伸長するルーメンを有し、生体内の管腔に挿入される鞘部と、内部を伸長するルーメンを有し、前記鞘部のルーメンに摺動自在、かつ回転可能に配置される挿通部材120と、生体内の管腔の閉塞物を除去するための除去機構140と、を有するカテーテルである。除去機構140は、挿通部材120の先端部に配置される支持部142と、挿通部材120の軸の周囲を取り囲むように支持部142に配置される複数の回転体152A~152Cと、を有する。回転体152A~152Cは、閉塞物を掘削する刃先と、挿通部材120の軸と交差する方向に延長する回転軸と、を有する。【選択図】図4
