Apparatus for mixing and transferring medications

摘要

An apparatus for transferring a chosen quantity of medication from a vial to a container under sterile conditions is described. The present invention further facilitates dissolving solid medications contained in the vial or diluting concentrated medications contained in the vial, and transferring the resulting solutions to the container. The container may be an intravenous infuser.

主权项

1. Apparatus for transferring medications from a vial having a septum into a container having a fill port, comprising:
a barrel having a bore with an elliptical cross section having a major axis and a minor axis, an open end, and a closed end, the closed end forming a fluid exit port adapted for attachment to the fill port of said container; a plunger comprising:
an elongated shaft; a first end, a first disk-shaped member forming a flat second end thereof, the flat second end having a post formed thereon, and an external surface between the first end and the first disk-shaped member; and a bore within said shaft opening through both the first end and the second end;a flexible barrel stopper having an elliptical cross section adapted to slidably move within the bore of said barrel from the open end thereof without rotating therein, and provide a fluid seal therewith; a first end and a second end, a disk-shaped interior portion adapted to rotatably receive the first disk-shaped member introduced through an opening in the first end of said barrel stopper, a bore passing between the interior portion of said barrel stopper through the second end, and a circular groove in the interior portion adapted to receive the post of the first disk-shaped member of said shaft, such that the rotation of the first disk-shaped member is confined to a chosen amount in the disk-shaped interior portion when said shaft is rotated about the long dimension thereof, and such that the bore in said barrel stopper is in fluid contact with the bore in said shaft in a portion of the chosen rotation; and a dispensing member having a septum-piercing spike at one end thereof with a first bore and a second bore exiting the spike, the first bore passing through said dispensing member and exiting a second end thereof, said dispensing member being attached to or integrally formed with the first end of said shaft such that the first bore is in fluid communication with the bore in said shaft, and the second bore entering said dispensing member and exiting through an exterior face thereof, forming thereby a pressure relief port.