Gasket for bypass type prefilled syringe

摘要

In a bypass type prefilled syringe having a tubular body formed with a bypass for establishing communication between front and rear compartments for preliminarily storing medicament and pharmaceutical liquid, respectively, a gasket for dividing interior space of the tubular body into the front and rear compartments includes a plurality of circumferential ribs, a plurality of annular recesses each formed between neighboring ones of the circumferential ribs and first and second axial slots formed on the circumferential ribs so as to define a bent outflow path for the pharmaceutical liquid at the time of communication between the front and rear compartments via the bypass.