PROBLEM TO BE SOLVED: To provide a catheter hub which, when a guide wire with a bent tip is inserted from an opening of a proximal end of a hub of a catheter, enables the tip of the guide wire to be smoothly inserted into a lumen of a shaft of the catheter.SOLUTION: A hub lumen forming part 34 of a catheter hub 14 includes: an inside diameter gradually reduced part 36 decreased in inside diameter as it goes from a proximal end opening 26 toward the tip direction and an inside diameter gradually increased part 38 which is provided at the tip side from the inside diameter gradually reduced part 36 and is increased in inside diameter as it goes toward the tip direction, and which opens at the tip of the hub lumen forming part 34.COPYRIGHT: (C)2014,JPO&INPIT【課題】先端が屈曲したガイドワイヤをカテーテルのハブの基端開口部から挿入する際に、ガイドワイヤの先端をカテーテルのシャフトの内腔へとスムーズに挿入することができるカテーテルハブを提供する。【解決手段】カテーテルハブ14のハブ内腔形成部34は、基端開口部26から先端方向に向かって内径が減少する内径漸減部36と、この内径漸減部36よりも先端側に設けられ、先端方向に向かって内径が増大し、ハブ内腔形成部34の先端で開口する内径漸増部38とを有する。【選択図】図2
