Safety syringe
AssigneeMedSafe Technologies, LLC
InventorsWilliam B. S. Pressly, Sr., Charles A. Vaughn, Sr., G. Samuel Brockway, Thomas R. Ellis
Life of this patent
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Abstract
A syringe apparatus and process is provided for retracting a needle from a hypodermic syringe following the completion of an injection. The hypodermic syringe has a plunger which, upon completion of the injection, is forced downwardly against a needle support deformable base, severing sacrificial supports. An end portion of the needle tears a base portion of the plunger and propels the needle into a hollow region of the plunger such that the needle is contained entirely within the plunger.
Claims3
A process for retracting a needle at the completion of subcutaneous injection with a hypodermic syringe, comprising the steps of:
- forcing a plunger of said syringe downwardly to force a needle support deformable base downwardly and break sacrificial supports;
- forcing an end portion of said needle to tear a base portion of the plunger;
- and
- propelling said needle into a hollow of said plunger such that said needle is contained entirely within said plunger.
A process for retracting a needle at the completion of subcutaneous injection with a hypodermic syringe, comprising the steps of:
- forcing a plunger of said syringe downwardly to a first location to force a needle support deformable base downwardly and break sacrificial supports;
- forcing said plunger downwardly to a second location, thereby directing an end portion of said needle to rupture a web defined by a terminus of the plunger;
- and
- propelling said needle into a hollow of said plunger such that said needle is contained entirely within said plunger.
Dependencies are inferred from the claim text.