Arrangement for preventing overfill of anesthetic liquid
AssigneeDatex-Ohmeda, Inc.
InventorGordon G. Sansom
Life of this patent
Estimating the term…
Abstract
A filling system for use between an anesthetic storage container and a drug reservoir of an anesthetic vaporizer to prevent overfilling of the drug reservoir. The filling system includes a filling conduit that extends between the drug reservoir and the anesthetic storage container to allow a liquid anesthetic agent to flow from the storage container to the drug reservoir. A closing valve is positioned adjacent to a flow opening of a filling conduit such that the closing valve can be moved to a closed position to prevent the flow of anesthetic agent into the drug reservoir. The closing valve includes a float that controls the opening and closing of the closing valve depending upon the level of the anesthetic agent within the drug reservoir.
Claims13
A filling system including an anesthetic storage container and a drug reservoir, the filling system for use in transferring an anesthetic liquid between the anesthetic storage container and the drug reservoir, the filling system comprising:
- a filling device coupled to the drug reservoir to receive the anesthetic storage container;
- at least one filling conduit formed in the filling device, the filling conduit having a first end including a flow opening in communication with the drug reservoir and a second end coupled to the anesthetic storage container, the filling conduit providing a pathway for both the anesthetic liquid from the anesthetic storage container and a replenishment gas to flow between the anesthetic storage container and the drug reservoir;
- and
- a closing valve operatively positioned adjacent to the flow opening of the filling conduit, the closing valve being movable to a closed position when a level of the anesthetic agent in the drug reservoir exceeds a desired level, whereby when the closing valve is in the closed position, the closing valve prevents the flow of anesthetic agent from the anesthetic storage container into the drug reservoir.
A filling system including an anesthetic storage container and a drug reservoir, the filling system for use in transferring an anesthetic liquid between the anesthetic storage container and the drug reservoir, the filling system comprising:
- a filling device coupled to the drug reservoir to receive the anesthetic storage container;
- at least one filling conduit formed in the filling device, the filling conduit having a first end including a flow opening in communication with the drug reservoir and a second end coupled to the anesthetic storage container, the filling conduit providing a pathway for both the anesthetic liquid from the anesthetic storage container and a replenishment gas to flow between the anesthetic storage container and the drug reservoir;
- a closing valve operatively positioned adjacent to the flow opening of the filling conduit, the closing valve including a float pivotally mounted within the drug reservoir, the float being movable along with the fluid level of the anesthetic agent within the drug reservoir;
- and
- wherein the closing valve further comprises a sealing ring coupled to the float and positioned to block the flow opening when the fluid level in the drug reservoir exceeds a selected level.
Dependencies are inferred from the claim text.