| 摘要 |
A sequential delivery syringe which has an internal chamber located within a body with the internal chamber being substantially closed at one end except for a discharge opening and totally open at the opposite end. A luer is connected to the discharge opening with the luer including a piercing member. A mid-piston is movably mounted within the internal chamber of the syringe with there also being a separate stopper piston which is connected to plunger. Between the stopper piston and the mid-piston is mounted a collapsible structure within which is an internal chamber. A liquid is to be contained within this internal chamber of the collapsible structure. Movement of the plunger and stopper piston toward the mid-piston will result in discharging any liquid contents which is located between the mid-piston and the closed end of the body, and upon the mid-piston being located directly adjacent the closed end, the mid-piston will be pierced which will permit the liquid that is contained within the collapsible structure to be discharged through the discharge passage following the discharge of the liquid which was contained within the syringe body and located between the mid-piston and the closed end. |
