Manual syringe filling device

Claim 1

A syringe filling device for drawing a predetermined dosage of fluid from an associated supply container into the barrel of an associated hypodermic syringe having a plunger disposed for movement within said barrel, said container having a transfer needle assembly affixed to the top end thereof adapted to couple The bottom end of said syringe barrel to the container interior, said filling device comprising: a base structure to receive said supply container; a support structure coupled to said base structure and extending upwardly therefrom; means for releasably coupling said transfer needle assembly to said support structure while said transfer needle interconnects said container and syringe in vertical registry, said coupling means including a collar disposed about said support structure, means for fixing said collar to said support structure, an arm extending outwardly from said collar transverse to said support structure, a first portion of said arm having surfaces adapted to interengage with said transfer needle assembly to prevent the vertical displacement of said transfer needle assembly relative to said support structure, and biasing means coupled to said arm and adapted to urge said transfer needle assembly toward said first portion; and plunger limiting means movably mounted to said support structure, said means having stop portions vertically aligned with said arm first portion whereby said stop portions extend into the path of motion that the plunger of said syringe will travel when said plunger is withdrawn from said syringe barrel whereby to fix the dosage that may be withdrawn from said container.