초록 ▼

A closure device (4) is used to seal an opening of a vessel (6), while providing access to the interior of the vessel. The closure device automatically releases gas and/or toxic vapor from the sealed vessel to protect the operator from harmful vapor without requiring the operator to manually actuate

A closure device (4) is used to seal an opening of a vessel (6), while providing access to the interior of the vessel. The closure device automatically releases gas and/or toxic vapor from the sealed vessel to protect the operator from harmful vapor without requiring the operator to manually actuate a valve or other mechanism prior to removing the vessel from the closure device. The closure device is constructed so the interior of the vessel can be pressurized while maintaining a pressure seal against the vessel opening, and the vessel can be cannulated without overpressurizing the vessel interior.

대표청구항 ▼

[ What is claimed is:] [1.] A closure device for sealing an opening of a vessel comprising:a cap adapted for being removably coupled to the vessel around the opening, the cap defining a port; anda valve plug disposed for biased axial movement within the cap for controlling fluid flow therethrough wh

[ What is claimed is:] [1.] A closure device for sealing an opening of a vessel comprising:a cap adapted for being removably coupled to the vessel around the opening, the cap defining a port; anda valve plug disposed for biased axial movement within the cap for controlling fluid flow therethrough while said cap remains in contact with the vessel, the valve plug having a sealing surface for sealing the opening of the vessel and defining a passage coupling the opening of the vessel through the sealing surface, the valve plug being movable between a first position, where the passage directly couples the opening with the port, and a second position, where the opening is fluidly isolated from the port.