Patent ID: 8337468

Claim:
A device for protecting against needlestick injuries, comprising: a syringe, being comprised of a tube, a plunger within said tube in liquid-tight connection, and a needle mounted in a hub, said hub being placed at a tip of said tube on an end opposite said plunger; a sheath means, covering said needle and having a hole at a distal end thereof, said needle being housed in said sheath means in a first position and being protruded through said hole in a second position, said sheath means being hollow with said syringe being removably engaged to said sheath means; an actuation means for moving said needle between the first and second positions, said actuation means being placed in closer proximity to said plunger than to said hub, said actuation means being hollow with said syringe being fixably attached to said actuation means; and a button means for manual control of said actuation means, wherein said syringe extends through said actuation means and said sheath means, and wherein said plunger is actuatable for dispensing from said tube when said needle is in either the first or the second position relative to said sheath means, wherein said sheath means has screw threads at an end opposite said hole, wherein said actuation means comprises: a toothed sleeve fixedly attached and friction fit to around said syringe, having teeth pointed away from said needle; a sleeve cam with complementary teeth to engage said toothed sleeve and an abutment member; a collar member with complementary screw threads, engaging said screw threads of said sheath means, said collar member having an interior volume housing said toothed sleeve and said sleeve cam and protrusions extending inward to engage said teeth of said toothed sleeve and a complementary abutment member at an end opposite said screw threads; a first compression spring extended between said abutment member of said sleeve cam and said complementary abutment member of said collar member; a second compression spring extended between the toothed sleeve and said sheath means; and a shell member covering said collar member, and wherein said button means moves said sleeve cam relative to said collar member.