LARGE CAPACITY SYRINGE

摘要

A syringe adapted to inject substantial amounts of medicament, said syringe comprising a syringe barrel having a necked portion at one end with a central through-bore while the other end is open and provided with a peripheral flange. A cannula assembly is fixedly fitted into the necked end of the syringe barrel, said cannula assembly including a body portion fixedly fitting into the necked portion of the syringe barrel with a cannula extending outwardly therefrom. A cylindrical needle support extends rearwardly from the body and mounts a needle within the syringe barrel. A cartridge assembly is slidably carried within the syringe barrel and includes a cylindrical cartridge body having a necked end closed by a stopper. The open end of the cylindrical body is closed off by a plunger whereby the medicament is held between the stopper and the plunger. The necked end of the cartridge body mounts a cap having an outwardly extending sleeve sized to fit over the needle support. Interengaging positioning portions are provided on the sleeve and needle support to lock the cartridge assembly in inactivated and actuated position. A retaining clip fits over the open end of the syringe barrel to retain the cartridge assembly within said barrel.