Abstract: A simple, economical, easy to manufacture and use system for protecting against unintended pricks from used hypodermic syringes and needles, and the leakage of fluid therefrom is disclosed. The system involves an assembly for attachment to standard syringe, barrels, which assembly comprises a guide, a needle securing plunger which fits into the guide and means for attaching the assembly to a syringe barrel. Provision to prevent the needle securing plunger from falling out of the guide is included, as are needle securing plunger design considerations which serve to ensure the needle securing plunger will allow embedding a needle in a needle pocket at the end of the needle securing plunger, and which serve to provide natural spring from interaction of the guide and the needle securing plunger when the end of the needle securing plunger, (i.e., the needle pocket region), is in place over a needle tip.

Abstract: A simple, economical, easy to manufacture and use system for protecting against unintended pricks from used hypodermic syringes and needles, and the leakage of fluid therefrom is disclosed. The system involves an adaptation to standard syringes comprised of a guide, and needle securing plunger which fits into the guide. Provision to prevent the needle securing plunger from falling out of the guide is included, as are needle securing plunger design considerations which serve to ensure the needle securing plunger will allow embedding a needle in a needle pocket at the end of the needle securing plunger, and which serve to provide natural spring from interaction of the guide and the needle securing plunger when the end of the needle securing plunger, (i.e., the needle pocket region), is in place over a needle tip. Additionally, a preferred packaging system to assure sterility and allow easy identification of needle or syringe length or gauge, etc. is disclosed.