Tamper evident syringe design

Abstract

Abstract A plastic prefilled syringe (10) including a syringe body (11) and a plunger assembly (12), the syringe body (11) having opposed first (13) and second (14) ends and an inner wall (16) defining a cylindrical chamber (15) which contains an injectable solution (100), the first end (13) of the syringe body (11) being sealed by a closure and the second end (14) incorporating an opening (18), the plunger assembly (12) including a plunger shaft (22) extending through said opening (18) and a stopper (24) secured at an end of said shaft (22) within said chamber, the plunger assembly (12) being movable within the chamber with the stopper (24) being operable to seal the opening (18) wherein the plunger assembly (12) includes barrier means (26 and 29) on said shaft (22) the barrier means (26 and 29) being adapted, in conjunction with a part of the syringe body (16 and 19), to inhibit access to the injectable solution (100) through the opening (18).

Inventors

• 👤 Michael Browning Kimber
• 👤 Frank Alexander Popovsky

Bibliographic Details