초록 ▼

A multiple dose, single barrel syringe has a barrel comprising a plurality of telescoping sections of progressively decreasing diameter. A puncturable fluid tight membrane extending across the forward end of each barrel section except the first divides the interior of the barrel into a plurality of

A multiple dose, single barrel syringe has a barrel comprising a plurality of telescoping sections of progressively decreasing diameter. A puncturable fluid tight membrane extending across the forward end of each barrel section except the first divides the interior of the barrel into a plurality of separate fluid receiving chambers, each of which may contain a different fluid medication. A plunger is slidably mounted in the last barrel section and extends exteriorly therefrom. At the forward end of the syringe is a hollow needle, which extends through a needle-receiving tubular conduit at the forward end of the first barrel section so that the needle is disposed partly inside and partly outside the barrel. Both ends of the needle are sharply pointed. The inner end of the needle punctures the membranes so that, as each chamber in the barrel is emptied, the next chamber is placed in communication with the needle.

대표청구항 ▼

A pre-filled multiple dose, single barrel syringe for dispensing at least two fluids in predetermined sequence, said syringe comprising: (a) a barrel comprising a plurality of telescoping sections of progressively decreasing diameter; (b) a thin puncturable fluid tight membrane extending across the

A pre-filled multiple dose, single barrel syringe for dispensing at least two fluids in predetermined sequence, said syringe comprising: (a) a barrel comprising a plurality of telescoping sections of progressively decreasing diameter; (b) a thin puncturable fluid tight membrane extending across the forward end of each barrel section except the first and reciprocable therewith, said membrane dividing the interior of said barrel into a plurality of separate fluid-receiving chambers each of said chambers being pre-filled with a fluid; (c) a plunger received in the last barrel section and including a portion extending exteriorly of the barrel; (d) sealing means providing fluid tight seals between successive barrel sections and between the last barrel section and said plunger; (e) needle receiving means at the forward end of the first barrel section, and (f) a hollow meedle extending through said needle receiving means, said needle being sharply pointed at both ends, a portion of said needle being inside said barrel and a portion of said needle being outside said barrel.