PROBLEM TO BE SOLVED: To provide a medical puncture device capable of quickly projecting a needle tube out of an outer cylinder. SOLUTION: An outer cylinder 10 which is made of a flexible resin and extends in the perspective direction, and an inner cylinder which is arranged in the inner cavity of the outer cylinder 10 and can move in the perspective direction with respect to the outer cylinder 10. A medical puncture device having 20 and a needle tube 30 fixed in the lumen at the distal portion of the inner cylinder 20 and communicating with the lumen, and the outer cylinder 10 is housed in a storage container 40. No. 1, the outer cylinder 10 is housed in the storage container 40 in a state of being wound once or more per 120 cm in length of the outer cylinder 10, and the needle tube 30 is stored in the storage container 40 at the distal end in the perspective direction of the needle tube 30. It has an opening edge 32 that is inclined with respect to the opening edge 32, which has the most distal portion 32a and the most recent portion 32b, and the most distal portion 32a is in the lumen of the outer cylinder 10 and is an outer cylinder. It is located on the 5 side of the winding center of 10, and the nearest portion 32b is located in the inner cavity of the outer cylinder 10 and on the outer side of the winding of the outer cylinder 10. [Selection diagram] Fig. 1【課題】針管を外筒の外に素早く突出させることができる医療用穿刺装置を提供する。【解決手段】可撓性樹脂で構成されており遠近方向に延在している外筒１０と、外筒１０の内腔に配置され、外筒１０に対して遠近方向に移動可能な内筒２０と、内筒２０の遠位部でその内腔内に固定され、内腔に連通している針管３０と、を有し、外筒１０が収納容器４０に収められている医療用穿刺装置１であって、外筒１０は、外筒１０の長さ１２０ｃｍにつき１回以上巻回された状態で収納容器４０に収められており、針管３０は遠位端部において針管３０の遠近方向に対して傾斜している開口縁３２を有し、開口縁３２は最遠位部３２ａと最近位部３２ｂとを有し、最遠位部３２ａは外筒１０の内腔内であって外筒１０の巻回中心５側に位置し、最近位部３２ｂは外筒１０の内腔内であって外筒１０の巻回外方側に位置している。【選択図】図１
