초록 ▼

An additive transfer unit for transferring a measured volume of a liquid medicament into an evacuated container. The unit comprises a liquid storage container, a rigid disc closing the mouth of the container, a rigid piercing member formed integrally with the disc and having an aperture defining a p

An additive transfer unit for transferring a measured volume of a liquid medicament into an evacuated container. The unit comprises a liquid storage container, a rigid disc closing the mouth of the container, a rigid piercing member formed integrally with the disc and having an aperture defining a passageway from the interior to the exterior of the container, a penetrable protective tip providing a seal over a needle point on the piercing member, and a metal closure. An elastic sealing means around and contiguous the outside diameter of the disc provides, with the disc, a fluid-tight seal over the mouth of the container. The disc includes a cylindrical hub spaced radially outwardly of the piercing member and abutting against an inner portion of the sealing means to stabilize the sealing means against the metal closure. The protective tip includes a portion deflecting radially outwardly of the piercing member in response to a positive pressure differential in the interior of the container, thereby venting a portion of the container contents into a cavity between the metal closure and piercing member.

대표청구항 ▼

An additive transfer unit for transferring a liquid medicament into a container comprising: a liquid storage container for holding the medicament to be transferred, said container having a neck portion terminating at a bead, said bead having a rim, with the inside dimension of the rim defining the c

An additive transfer unit for transferring a liquid medicament into a container comprising: a liquid storage container for holding the medicament to be transferred, said container having a neck portion terminating at a bead, said bead having a rim, with the inside dimension of the rim defining the circumference of a mouth of the container; a disc of rigid material closing the mouth of the container, with a lower portion of said disc overlying at least a portion of the rim of the container; a rigid piercing member extending from a central location of the disc in a direction axially outwardly of the mouth of the container, terminating in a needle point, said disc and said piercing member comprising an integral, one-piece structure; an aperture extending from the needle point through a longitudinal axis of the piercing member and continuing through the disc along such axis to define a passageway from the interior of the container to the exterior of the container; a protective tip providing a seal over the needle point of the piercing member; elastic sealing means around and contiguous the outside diameter of the disc overlying at least a portion of the rim of the container, and overlying an outer peripheral portion of the disc, said sealing means and said disc providing, in combination, a fluid-tight seal over the mouth of the container; and wherein said disc further comprises a hub extending axially outwardly of the upper portion of the disc, said hub being spaced radially outwardly of the piercing member and including a radially outwardly facing outer surface portion abutting against an inner peripheral portion of the elastic sealing means.