Hand syringe with safety storage for used needle and method of use

Claim 1

An improved method of storing and disposing of used syringe needles after injection of a fluid into a diseased patient, thereby providing greater safety from accidental disease transmission to an individual responsible for making said injection, using a syringe having a hollow cylindrical body open on the distal end, a needle head including a locking tab slot for fixing the needle head at the distal end of said body, a syringe needle secured to said needle head, and a sliding plunger including tabs and movable within said hollow cylindrical body, comprising the steps of: filling said hollow cylindrical body with fluid; injecting the fluid into the patient by sliding said plunger toward the needle head; continuing moving said plunger towards said needle head until the locking tabs are within said locking tab slots; rotating said plunger and needle head until said locking tabs interlock with said locking tab slot; withdrawing said plunger away from said needle head and causing said tabs on said needle head to be sheared; and continuing withdrawal of said sliding plunger until said needle head and syringe needle are completely encased within said hollow cylindrical body.