Keyed anesthetic vaporizer filling system

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 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;
• and
• a filler valve assembly positioned in the filling station and movable between an open position and a closed position, the filler valve assembly including a stationary activation rod 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 and 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 bottle adapter contacts the valve body and moves the valve body to the open position as the bottle adapter is inserted into the filling station,
• wherein the adapter valve assembly and the filler valve assembly are positioned such that the filling valve assembly opens prior to opening of the adapter valve assembly as the bottle adapter is inserted into the filling station.

A filling system for the delivery of a liquid anesthetic agent from an anesthetic bottle to 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, wherein anesthetic agent can flow through the outlet opening when the adapter valve assembly is in the open position;
• a cylindrical keyed section formed on the bottle adapter, the keyed section 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 vaporizer for receiving the bottle adapter and through which the anesthetic agent can be dispensed into an 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 movable to the open position upon contact with the bottle adapter as the bottle adapter is inserted into the filling station and wherein the adapter valve assembly is movable to the open position upon contact with the filler valve assembly as the bottle adapter is inserted into the filling station;
• and
• a filler spout formed on the filling station, the filler spout having a 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 as the bottle adapter is inserted into the filling station when the first angle is equal to the second angle.