POSITIVE DISPLACEMENT STOPPER FOR A PRE-FILLED SYRINGE

摘要

A stopper (12) adapted for attachment with a plunger rod (14) for use wit hin a syringe barrel (16) is disclosed. The stopper includes a main body (26 ) defining an open rearward end (28) and a closed front end (30). The open r earward end is adapted to receive a front forward end attachment portion (31 ) of the plunger rod. The stopper also includes a core member (32) integrall y formed with said main body adjacent the closed front end. The core member includes a nose portion (34) having a profile adapted to create a positive s eal with an outlet opening of such syringe barrel.