Being the catheter, the aforementioned catheter has had the proximal side shaft and the distal (2036) side shaft which possess the respective proximal end and the distal (2036) end, as the distal (2036) edge of the aforementioned proximal side shaft and the proximal edge of the aforementioned distal (2036) side shaft are connected, the hub for the said catheter retention is connected by the proximal edge of the aforementioned proximal side shaft, at least portion of the aforementioned distal (2036) side shaft is formed from the inside shaft and outside surrounding the shaft inside the said in coaxial condition, shaft, exceeding the shaft outside the description above, we expand the shaft inside the description above on distal (2036) side, as for lumen of the shaft inside the description above forming the guide wire lumenWe have done, when pushing in power above uniformity is granted to the aforementioned catheter, the catheter which features that the expedient which controls the fact that the shaft outside the description above and the shaft inside the description above move relatively is provided.カテーテルであって、前記カテーテルはそれぞれ近位端部と遠位端部とを有する近位側シャフトと遠位側シャフトを有しており、前記近位側シャフトの遠位端と前記遠位側シャフトの近位端が接合されるとともに前記近位側シャフトの近位端には該カテーテル保持用のハブが接合されており、少なくとも前記遠位側シャフトの一部は内側シャフトと該内側シャフトを同軸状に取り囲む外側シャフトとから形成されており、前記内側シャフトは前記外側シャフトを越えて遠位側に伸長しており、前記内側シャフトの内腔はガイドワイヤルーメンを形成しており、前記カテーテルに一定以上の押込力が付与された場合に、前記外側シャフトと前記内側シャフトが相対的に移動することを抑制する手段が設けられていることを特徴とするカテーテル。
