| 摘要 |
PROBLEM TO BE SOLVED: To facilitate the replacement of a guide catheter by arranging first and second coupling parts and a fixing mechanism to fix a guide wire on a main catheter or on an extended tube in a state where either or both of the first and second coupling parts are coupled. SOLUTION: A thread 11 is screwed down on a thread groove and as the screwing thereof proceeds, a tip taper part 12 of a first coupling part 6 advances inward to a connector and contacts a smaller diameter part of a second coupling part 8 to narrow the clearance of a slit 13. Then, the inner diameter of the tip taper part 12 also becomes smaller until the internal surface of the tip of the tip taper part 12 contacts a guide wire while the tip part holds the guide wire to lock. On the other hand, as the connector turns counterclockwise, the tip taper part 12 of the first coupling part 6 will not contact the second coupling part 8 and the clearance of the slit 13 expands to release the locking thereby enabling moving of the guide wire within the catheter 2. |
