초록 ▼

A pre-filled chamber having a piston plug at one end and a stopper at the other end. The chamber is filled with a powdered medicament that is to be intermixed with a diluent in a container. Rotatable attachments join the chamber containing the powder with a receptacle on the container. The powdered

A pre-filled chamber having a piston plug at one end and a stopper at the other end. The chamber is filled with a powdered medicament that is to be intermixed with a diluent in a container. Rotatable attachments join the chamber containing the powder with a receptacle on the container. The powdered medicament is expelled from the chamber by the force of a plunger acting on the piston plug. The stopper at the end of the chamber containing the powder serves as a mounting for a piercing tip which breaks a membrane over the neck of the container allowing fluid connection between the chamber and the container and transferral of the powdered medicament from the chamber to the container.

대표청구항 ▼

A mixing system for first storing and subsequently transferring a powdered medicament to a solution container comprising: a hollow chamber member; a piston plug slidably mounted in sealing engagement with one end of said hollow chamber member; a stopper member slidably mounted in the opposite end of

A mixing system for first storing and subsequently transferring a powdered medicament to a solution container comprising: a hollow chamber member; a piston plug slidably mounted in sealing engagement with one end of said hollow chamber member; a stopper member slidably mounted in the opposite end of said hollow chamber member from said piston plug, said stopper member having a piercing tip on one side thereof; external rotatable engagement means extending from said hollow chamber member substantially adjacent said stopper member; complementary internal rotatable engagement means in the neck portion of the solution container; removable means for exerting force on said piston plug in a direction substantially parallel to the axis of said hollow chamber member; a rupturable diaphragm positioned in the neck portion of the solution container so that rotatable engagement of said external and internal rotatable engagement means will cause said piercing tip to rupture said pierceable diaphragm; whereby the exertion of force on said piston plug by said removable means for exerting force after the rupturing of said rupturable diaphragm by said piercing tip will effect a transfer of the powdered medicament from said hollow chamber member into the solution container.