Sterilized storage container

Details Sterilized storage container Sterilized storage container

A - Human Necessities

61

L

217/37, 21/8

A61L 2/00 (2006.01) A61B 19/02 (2006.01) A61L 2/26 (2006.01)

Patent

CA 1130081

STERILIZED STORAGE CONTAINER Abstract A container is provided having a base and a lid with the base being formed relatively flat but with the center portion of the base raised so that condensation within the container will flow to the edges and out of the container when the lid is not in a closed position. The lid is held partially open by an actuator pin connected to an expandable chamber which will expand in response to the pressure drop at the end of the sterilizing cycle to withdraw the pin and allow the lid to close onto the base. In this way, the container is closed after the contents have been sterilized and after any condensation within the container has been allowed to drain, but before the container is exposed to unsterile environment. A valve controlling the flow of steam into the expandable chamber closes when subjected to the high temperature steam, thus capturing the steam which eventually expands to cause withdrawal of the pin. The container lid and base together with a gasket permit steam to be withdrawn from the container but prevent air flow into the container once the lid is closed. A vacuum created within the container at the end of the sterilizing cycle holds the container lid in place. In another arrangement, an expandable chamber is em- ployed to cause the container to be sealed at a predetermined pressure after the container has been subjected to a final vacuum in an autoclave cycle but before the container is removed from the autoclave. The lid is first held open by one end of a pivotally mounted lever. A temperature triggered, pressure re- sponsive expandable chamber is employed to pivot the lever, withdrawing the end of the lever which had been supporting the lid and pivoting the second end of -1- the lever into lid supporting position. When the pressure surrounding the expandable chamber is increased at the end of a vacuum cycle in an autoclave, the expandable chamber contracts, allowing a spring to pivot the lever and withdraw the second end of the lever from supporting the lid, thus allowing the lid to fall and seal on the base.

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