Patent ID: 6817390
Filing Date: 2004-11-16
Classification: A61M

Abstract:
A filling system for the delivery of a liquid anesthetic agent from an anesthetic bottle to an internal sump of an anesthetic vaporizer, the system comprising:a bottle adapter configured for attachment to the anesthetic bottle, the bottle adapter having an outlet opening through which anesthetic agent from the anesthetic bottle can be discharged; an adapter valve assembly positioned in the bottle adapter and movable between an open position and a closed position, the adapter valve assembly including a valve head that prevents the flow of the anesthetic agent through the outlet opening when the adapter valve assembly is in the closed position; a cylindrical keyed section formed on the bottle adapter having at least a pair of protruding indexing ridges positioned at a first angle relative to each other around the outer circumference of the keyed section; a filling station positioned on the anesthetic vaporizer for receiving the bottle adapter and through which the anesthetic agent can flow into the internal sump of the anesthetic vaporizer; a filler valve assembly positioned in the filling station and movable between an open position and a closed position, the filler valve assembly being configured to contact the valve head of the adapter valve assembly and move the adapter valve assembly to the open position as the bottle adapter is inserted into the filling station, the filler valve assembly having a valve body movable within the filling station, the valve body being biased into a closed position to prevent the flow of anesthetic agent into the vaporizer, wherein the valve body is movable to the open position prior to movement of the adapter assembly to the open position; and a filler spout formed on the filling station, the filler spout having cylindrical outer wall including at least a pair of recessed indexing grooves positioned at a second angle relative to each other, wherein the indexing grooves receive the indexing ridges and allow the bottle adapter to be inserted into the filling station only when the first angle is equal to the second angle, wherein the first angle between the indexing ridges and the second angle between the indexing grooves are determined by the type of anesthetic agent such that the filler spout can receive only one type of anesthetic agent; wherein the indexing grooves of the filler spout contact and receive the indexing ridges of the keyed section prior to the filler valve assembly opening as the bottle adapter is inserted into the filling station.