PROBLEM TO BE SOLVED: To provide a catheter that improves operability.SOLUTION: A catheter 10 comprises a guide wire lumen 26, and comprises a long shaft part 20 in which a proximal side opening part 27 and a distal side opening part 51 of the guide wire lumen 26 are formed. The proximal side opening part 27 comprises a plurality of auxiliary opening parts 29 along an axial direction in a side surface of the shaft part 20.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】操作性が向上するカテーテルを提供する。【解決手段】ガイドワイヤルーメン26を有するカテーテル10であって、ガイドワイヤルーメン26の近位側開口部27および遠位側開口部51が形成される長尺なシャフト部20を有し、近位側開口部27は、シャフト部20の側面に軸方向に沿って複数の副開口部29を有する。【選択図】図1
