Patent ID: 7166089

Claim:
A plunger for a syringe comprising: a shank adapted to be partially movably received in a barrel of the syringe, said shank having a first end with a thumb rest radially extending therefrom, said shank having a secured end having a stub extending longitudinal from said shank, said stub having an exterior surface, said stub having a stopper extending radially outwardly from said exterior surface adjacent an end of said stub adjacent said shank, said stub having a mushroom-shaped connector at an opposite end of said stub, said stub having a pair of annular flanges extending radially outwardly from said exterior surface in generally parallel planar relation to each other, said pair of annular flanges positioned between said stopper and said mushroom-shaped connector; and a rubber bulb mounted on said stub so as to have an end abutting a surface of said stopper, said rubber bulb in surface-to-surface contact with said exterior surface of said stub, said rubber bulb extending between said pair of annular flanges so as to have a surface contacting said exterior surface in a space between said pair of annular flanges, said rubber bulb having a coating extending entirely over and in surface-to-surface contact with said mushroom-shaped connector.