| 摘要 |
PROBLEM TO BE SOLVED: To preserve the slidability between a piston and a resin surface on the internal surface of a barrel, and at the same time, improve the sealability. SOLUTION: This prefilled type syringe for drug is constituted by combining a barrel made of a plastic, a laminated piston and a nozzle cap. In this case, an elastic body section is provided on a piston-sliding surface on the internal surface of the barrel. |
