Patent ID: 11878130
Assignee: ASAHI INTECC CO., LTD.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 13:
14. A catheter comprising:
a hollow shaft that includes a distal tip part comprising:
a small diameter portion that is a distalmost portion of the distal tip part,
a large diameter portion having a larger outer diameter than the small diameter portion and located at a proximal side of the small diameter portion in an axial direction of the hollow shaft, and
a tapered portion that is continuous with the small diameter portion and the large diameter portion and that gradually increases in diameter from the small diameter portion toward the large diameter portion;

a coil body disposed on an outer periphery of the hollow shaft; and
a distal tip that covers at least a part of an outer periphery of the distal tip part of the hollow shaft, the distal tip being formed of a material that is softer than a material of the hollow shaft,
wherein:
a distal end portion of the coil body in the axial direction is joined in a circumferential direction to form a joint part;
the joint part is located over the tapered portion and/or the small diameter portion along the axial direction; and
in a state in which the hollow shaft extends linearly, a distance in a radial direction of the hollow shaft between an inner peripheral surface of the joint part and an outer peripheral surface of the tapered portion and/or an outer peripheral surface of the small diameter portion increases toward the distalmost portion of the distal tip part of the hollow shaft in the axial direction.