Patent ID: 7077827

Claim:
A syringe for sequentially administering different fluids comprising: a syringe body having a hollow interior for receiving the fluids to be administered; a syringe needle mounted at one end of the syringe body for administering the fluids therefrom; a plunger mounted within the interior of the syringe body for movement therein toward the end of the syringe body comprising the syringe needle to force fluids outwardly from the interior of the syringe body through the syringe needle; the plunger further comprising a piston forming a fluid tight seal with the interior of the syringe body; a floating piston slidably supported within the hollow interior of the syringe body and forming a fluid tight seal with the syringe body which divides the syringe body into a first portion for receiving the first fluid to be administered and a second portion for receiving the second fluid to be administered; and the floating piston further comprising means for connecting the second fluid to be administered in fluid communication with the syringe needle after all of the first fluid to be administered has been discharged therethrough.