Drug withdrawal system for container

Claim 1

Apparatus for withdrawing medicine from a vial with a syringe wherein said vial has a necked-in upper section and a penetrable closure gasket at the top of said vial, an interior of said vial, said apparatus comprising a chassis having outer walls with snap on means at the lower end of said outer walls of said chassis for attaching said apparatus to said vial at said necked in section at said top of said medicine vial, generally vertical inner walls of said chassis spaced from said outer walls, a cylindrical Luer lock adapter having cylindrical walls with a male Luer lock means on outer upper surfaces of said adapter, said cylindrical Luer lock adapter mounted to said inner walls of said chassis at the base of said inner walls, said adapter being positioned over said gasket in an upright position, a hollow cylindrical ferrule having a hollow lance at the lower end thereof, said ferrule being positioned within said adapter, said ferrule being movable within said adapter from a recessed position to an extended position within said adapter when a syringe is secured to the outer end of said adapter by female Luer lock means on said syringe cooperating with said male Luer lock means, said syringe thereby moving said ferrule from said recessed position to said extended position, said lance thereby puncturing said gasket and placing said vial interior and said syringe in flow communication with each other.