Back to results
US 4,710,170 AGranted
Anti-needle strike and anti-drug abuse syringe
AssigneeHabley Medical Technology Corporation
InventorsTerry M. Haber, William H. Smedley, Clark B. Foster
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeHabley Medical Technology Corporation
InventorsTerry M. Haber, William H. Smedley, Clark B. Foster
Estimating the term…
A disposable, anti-needle strike, anti-drug abuse syringe which reduces the frequency of accidental needle strikes to health care workers and prevents health-threatening reuse of the needle canula by drug abusers. The syringe has a needle carrying base and an attached hypodermic needle assembly which are relocatable within the syringe cylinder from a distally disposed first position to a proximally disposed second position. A piston assembly having a detachable stem moves reciprocally and axially through the syringe cylinder to expulse fluidic medication and to selectively engage the needle carrying base at the distal bore of the cylinder, whereby to relocate the needle carrying base and its attached needle assembly from the first position to the second position. The needle carrying base is anchored at the second position, such that the used needle extends into and is shielded by the syringe cylinder. The stem is then detached from the piston assembly and inserted through the now open orifice at the distal bore of the cylinder. The piston assembly stem is axially advanced through the syringe cylinder until contact is made with the needle canula which is anchored at and extended into the cylinder from the second cylinder position. The piston stem is further advanced to thereby bend, rather than unsafety snap, the needle canula. The stem is locked at its final position within the syringe cylinder to create a disposal cartridge with the needle canula destroyed, shielded and rendered irretrievable therewithin.
An anti-needle strike and anti-drug abuse syringe comprising a hollow syringe cylinder, a hypodermic needle, means for carrying said hypodermic needle to be connected to said needle and removably attached to a first end of said syringe cylinder such that said hypodermic needle projects outwardly from said first end by which to inject or infuse a fluid, means to relocate said needle carrying means from said first cylindrical end to another location within said cylinder such that said hypodermic needle extends within the interior of said syringe cylinder from said other location, and means to be inserted through said first cylinder end after the removal of said needle carrying means therefrom, said means to be inserted extending into the interior of said cylinder to prevent access to or reuse of said needle after fluid has been injected from said cylinder.
An anti-needle strike and anti-drug abuse syringe comprising:
An anti-needle strike and anti-drug abuse syringe comprising:
Dependencies are inferred from the claim text.