An apparatus for drawing fluid into a hypodermic syringe comprising a hypodermic syringe of the type having a cylindrical container, the hypodermic syringe having an open proximal end and a distal end with a needle and a shoulder at the proximal end, the hypodermic syringe also having a reciprocable...http://www.google.co.uk/patents/US5487738?utm_source=gb-gplus-sharePatent US5487738 - Apparatus for drawing fluids into a hypodermic syringe
