| 摘要 |
PROBLEM TO BE SOLVED: To provide a syringe with lock cylinder prevented from being broken in the base part of a Luer taper part and comprising a lock cylinder locked and mounted on the syringe without inclining. SOLUTION: This syringe 10 comprises a cylindrical neck part 16 having an outer diameter D larger than the maximum outer diameter d of the Luer taper part 12 on which the needle base Y of an injection needle X is fitted and a thickness T1 larger than the maximum thickness t thereof, which is formed on the base part of the Luer taper part 12, and circumferential recessed grooves 18 and 19 are formed on the circumferential surface of the neck part 16. The lock cylinder 30 comprises a cylindrical fitting part 32 to be fitted along the circumferential surface of the neck part 16, which is formed on the base part of a cylindrical screw pat 31 having a female screw hole 33 for screwing a needle base rim Z formed on the inside surface, and circumferential protruding threads 35 and 36 to be fitted to the recessed grooves 18 and 19 are formed on the inside surface of the fitting part 32. |
