Patent ID: 7168467

Claim:
A filling system for an anesthetic evaporator, the filling system comprising: a plurality of bottle adapters for connection to storage containers for liquid anesthetic, each of said bottle adapters having an adapter neck, each of said adapter necks including an adapter valve and an outlet neck, each said outlet neck defining slots; a plurality of different outer polygons as an anesthetic-specific coding, each of said plurality of outer polygons being arranged on one of said adapter necks; a plurality of filling devices for anesthetic, each of said plurality of filling devices being disposed at the anesthetic evaporator and having a filler neck for receiving one of said adapter necks, each of said filler necks having an inner polygon as said anesthetic-specific coding on a respective said filler neck with a design corresponding to one of said plurality of outer polygons, each said outer polygon is positionable in a corresponding said inner polygon in a plurality of different positions, a filling valve is arranged in each of said filler necks, a plurality of bars extend radially inward from an inner surface of said each filler neck, said bars correspond to said slots in a corresponding said outlet neck, said bars, said outlet neck, said adapter valve and said filling valve being arranged to have said outlet neck open said filling valve and to have said bars open said adapter valve when said adapter neck is inserted into said filler neck.