Injection syringe comprises adapter gripping cylinder which contains needle mounting with catch fitting into groove in cylinder that is withdrawn into cylinder after injection by breaking line of weakness between it and adapter

摘要

Injection syringe is fitted with an adapter (5) whose top edge grips the base of the cylinder (2), and a needle mounting (13) fits in this with a catch (7) which fits into a peripheral groove (12) in the cylinder before the syringe is used, where after injection, the needle mounting is withdrawn together with the piston into the cylinder by breaking a line of weakness (15) between it and the adapter, is new.