PROBLEM TO BE SOLVED: To provide a catheter capable of reducing slide resistance a medical device to the lumen of the catheter, and suppressing deformation and breakage of the catheter or the medical device.SOLUTION: A catheter 1 includes a catheter shaft 2, and a hub 4 provided on a base end side of the catheter shaft 2. The catheter shaft 2 has a shaft inclined surface 26 whose diameter becomes bigger toward a base end direction so as to have an angle to a central axis X of the catheter 1 in the inner peripheral surface of a base end part. The hub 4 has a first hub inclined surface 48 which is continuous from the shaft inclined surface 26 at an inclined angle same as an angle made by the shaft inclined surface 26 to the central axis X, and a second hub inclined surface 49 which is provided on the base end side of the first hub inclined surface 48 and whose diameter becomes bigger so as to have an inclined angle different from the angle made by the first hub inclined surface 48. The hub 4 does not cover the inner peripheral surface of the catheter shaft 2 in a connection part where the catheter shaft 2 and the hub 4 are connected.SELECTED DRAWING: Figure 4【課題】カテーテルの内腔に対する医療器具の摺動抵抗を低減させることができ、かつカテーテルや医療器具の変形や損傷を抑制できるカテーテルを提供する。【解決手段】カテーテルシャフト２と、カテーテルシャフト２の基端側に設けられるハブ４とを有するカテーテル１であって、カテーテルシャフト２は、基端部の内周面に、カテーテル１の中心軸Ｘに対して角度を有するように基端方向へ向かって径が大きくなるシャフト傾斜面２６を有し、ハブ４は、中心軸Ｘに対してシャフト傾斜面２６がなす角度と同じ傾斜角度でシャフト傾斜面２６から連続する第１ハブ傾斜面４８と、第１ハブ傾斜面４８の基端側に設けられて第１ハブ傾斜面４８がなす角度と異なる傾斜角度を有するように径が大きくなる第２ハブ傾斜面４９とを有し、ハブ４は、カテーテルシャフト２とハブ４が連結している連結部においてカテーテルシャフト２の内周面を覆わない。【選択図】図４
