Vial-based prefilled syringe system for one or two component medicaments

摘要

A bottomless vial (2) for forming a syringe has a strengthening bead (6) at its wider open end to which a combination finger grip and piston retainer can be secured. The bead is formed at least partly inward of the main portion of the inner surface of the sidewall (4) of the body, so as to reduce or eliminate projection of the bead beyond the main portion of the outer surface of the sidewall (4). By forming the bead by flaring of a reduced diameter end portion (74) of the body, this objective can be achieved whilst providing a flare (76) which assists insertion of the piston and a shoulder (84) to retain the finger grip and piston retainer (16).