Patent ID: 6537257
Filing Date: 2003-03-25
Classification: A61M

Abstract:
The assembly having a self-contained syringe comprising a barrel equipped with a plunger, a hypodermic needle affixed to one end thereof and a shield or a guard slidable mounted on said barrel and in reciprocating relation to said needle, whereby said shield or guard can be slidable retracted and/or extended relative to said barrel to shield said needle from exposure or contact prior to use thereof and, upon removal or retraction of said shield, permit said needle to project from the end of said assembly and to allow for collection or dispensing of a fluid through said needle relative to the barrel of said syringe, the improvement comprising:a slidable, barrel mounted, reciprocating shield in the form of a fluid tight container for isolation of a syringe needle mounted on a syringe, having A. an open end characterized by an essentially fluid tight seal for mating engagement with a barrel of a syringe, said seal being further characterized as permitting both reciprocating movement, upon retraction of said shield relative to along said barrel of said syringe, and sealing of said needle and fluid within said shield, upon re-deployment of said shield beyond the end of said needle, and B. a closed end having a resealable permanent elastomeric seal integral with said shield and disposed in-line with said syringe needle, whereby upon relative axial movement of said shield along said barrel, said needle penetrates said septum and, upon extension of said shield relative to said barrel, reseals said needle within said shield, whereby, and fluids that are disposed within said barrel and inadvertently discharged through said needle are retained within said shield.