PROBLEM TO BE SOLVED: To provide a medical adapter capable of smoothly performing a screwing operation at the time of connection. SOLUTION: A medical adapter 10 is a connection between an upstream discharge portion 20 having a fluid flow path (outflow passage 20a) inside and a downstream side having a fluid flow path (hollow portion 30a) inside. Connect with the plug 30. The medical adapter 10 includes a first cylinder body 50 that can be screwed into the discharge portion 20, and a second cylinder body 70 that is rotatably attached to the first cylinder body 50 and can be screwed into the connection plug 30. To be equipped. As a result, the medical adapter 10 can smoothly perform the screwing operation while keeping the discharge portion 20 and the connection plug 30 non-rotating by rotating the second cylinder 70 relative to the first cylinder 50. it can. [Selection diagram] Fig. 2【課題】接続時に螺合操作を円滑に実施させることができる医療用アダプタを提供する。【解決手段】医療用アダプタ１０は、流動物の流路（流出路２０ａ）を内部に有する上流側の吐出部２０と、流動物の流路（中空部３０ａ）を内部に有する下流側の接続プラグ３０との間を接続する。医療用アダプタ１０は、吐出部２０に螺合可能な第１筒体５０と、第１筒体５０に対し相対回転自在に取り付けられ、且つ接続プラグ３０に螺合可能な第２筒体７０とを備える。これにより医療用アダプタ１０は、第１筒体５０に対し第２筒体７０を相対回転させることで、吐出部２０、接続プラグ３０を非回転としたまま螺合操作を円滑に実施させることができる。【選択図】図２
