SAFETY SYRINGE

摘要

A syringe apparatus (1) and process for using the same is provided, the syringe apparatus having a barrel (5), a plunger (7) movable within the barrel, a needle assembly (9) attached to an end of the barrel, and having a passageway (23) therethrough, a deformable base (11) positioned within the barrel, flexible supports (31) included on the deformable base, a spring (21) within the passageway of the needle assembly, a hollow needle (3) passing through the passageway, an enlarged head (13) on the needle, and a rupturable web (79) on an end of the plunger, whereby when the plunger moves through the barrel toward the needle assembly, a fluid can be moved from the barrel through the hollow of the needle, and continued movement of the plunger flexes the supports and moves the deformable base downwardly until such time a sufficient force is imparted to the rupturable web by the enlarged head to tear the web, and the deformable base then releasing the needle due to force applied by the spring to project the needle into the interior of the plunger.