Patent ID: 6565529
Filing Date: 2003-05-20
Classification: A61M

Abstract:
A plastic prefilled syringe including a syringe body and a plunger assembly, the syringe body having opposed first and second ends and an inner wall defining a cylindrical chamber which contains an injectable solution, the first end of the syringe body being sealed by a closure and the second end incorporating an opening, the plunger assembly including a plunger shaft extending through said opening and a stopper secured at an end of said shaft within said chamber, the plunger assembly being movable within the chamber with the stopper sealing the injectable solution from the opening, wherein the plunger assembly includes barrier means on the shaft which has a diameter greater than the opening and the syringe body includes an integral collar at or adjacent the second end which extends inwardly of the inner wall of the chamber such that the barrier means, in conjunction with the integral collar, inhibits access to the injectable solution through the opening.