| 摘要 |
PROBLEM TO BE SOLVED: To provide a safe syringe that breaks and stores a used needle in the syringe. SOLUTION: The safe syringe 13 is equipped with a needle 1, a piston 2 and cylinder 3, the needle 1 is erected in the upper portion of a needle support 5, an annular projection 6 is provided in the opening of the lower end of the needle support 5 and a small groove 7 is provided in the periphery thereof, a sealing ring 8 is annularly mounted in the small groove 7, the needle support 5 is engagedly inserted into a holding cylinder 4 provided in the upper portion of the cylinder 3, an engagement projection 11 that can be hooked up with the annular projection 6 is provided in the recess 10 of a piston sealing portion 9 provided in the upper portion of the piston 2. |
