MULTIPLE-DOSE SYRINGE

摘要

A multiple-dose syringe (10) including a barrel (12) with a closed end (14) and an open end (16), the closed end (14) having an injection port (22) adapted to receive a needle (24). A plunger (38) is slidably disposed through the open end (16) of the barrel (12). A container (28) is connected to an end of the plunger (38) to move with the plunger (38). The container (28) is a deformable shell (30) with an opening at a forward end thereof and a predetermined quantity of fluid sealed therein by a closure member disposed over the opening. The container (28) is slidably disposed in the barrel (12) and includes a seal (66) proximal to the forward end to form a first cavity in the barrel (12) with a volume that is adjustable by moving the container (28) in the barrel (12) with the plunger (38) so that fluid can be selectively drawn into and expelled from the first cavity.