Patent ID: 8915902

Claim:
A transfer system comprising: a vial socket; a housing having first and second open ends, said first open end being releasably connected to said vial socket; a needle hub mounted within said housing, said needle hub being formed of first and second disengageable members, said first disengageable member terminating in a dispensing outlet, said dispensing outlet being configured so as to not accept a needle which could be used for injection; a needle having first and second piercing ends mounted in respective first and second disengageable members of the needle hub, said second disengageable member being retained within said vial socket to prevent access to said second piercing end when said housing and vial socket are separated; a vial having a neck and a body, said vial being inserted in said vial socket, said vial being non removably retained in said releasably connected vial socket; a cartridge having a plunger sealing an open end thereof, a septum located at an opposite end of said cartridge; and an activation cap for causing said needle to penetrate a septum of the vial and said septum of the cartridge to permit transfer of components therebetween; said housing having at least one slot formed therein, said activation cap having first and second protrusions formed thereon, said first protrusion being located proximate an end of said activation cap, said second protrusion being axially spaced from said first protrusion, the arrangement being such that said first protrusion engages within said slot when said activation cap is in a preactivated state and said second protrusion engages within said slot when said activation cap has been activated.