Crimping device and shaft manufacturing method

A crimping device for crimping a cylindrical body of a non-transmissive material to X-rays to a shaft member for a catheter, the crimping device comprising:

• a first crimping member, the first crimping member including a first portion and a second portion configured to perform a first crimping where the cylindrical body is crimped to the shaft member to obtain a first crimped state;
• a positioning member, the positioning member including a first portion and a second portion configured to the cylindrical body on the shafter member;
• and
• a second crimping member, the second crimping member including a first portion and a second portion configured to perform a second crimping of the cylindrical body to the shaft member, and wherein the second crimping of the cylindrical body is performed after the first crimping of the cylindrical body to obtain a second crimped state.

A method for manufacturing a shaft including a shaft member for a catheter and a cylindrical body crimped to the shaft member, the method comprising:

• performing a first crimping of the cylindrical body to the shaft member to obtain a first crimped state where the cylindrical body is crimped to the shaft member with the cylindrical body that has the shaft member inserted through the cylindrical body and is fastened in a radial direction of the cylindrical body;
• performing a positioning operation with a positioning member that is arranged ahead of the first crimping member with a movement path for axially forward movement or axially backward movement of the shaft member, the positioning operation including:
• a radial operation in which the positioning member operates radially inwardly;
• and
• a retaining operation that retains a position of the positioning member after the radial operation, the radial operation being to be performed to obtain a contact state where the cylindrical body has a rear end face in contact with the positioning member in a case where the rear end face of the cylindrical body in the first crimped state moves backward after passing the positioning member forward, the retaining operation being to be performed to obtain a positioned state where the cylindrical body is positioned to the shaft member after the shaft member moves backward with respect to the cylindrical body in the contact state;
• and
• performing a second crimping operation with a second crimping member provided ahead of the positioning member with the movement path, the second crimping member being configured to perform a second crimping to obtain a second crimped state where the cylindrical body is crimped more firmly than the cylindrical body in the first crimped state, with the cylindrical body in the positioned state and in the contact state that is fastened in the radial direction of the cylindrical body.