Patent ID: 8033306

Claim:
An adapter used to connect an anesthetic agent container to a vaporizer fluid port, the adapter comprising: a base connectable to an anesthetic agent container; a spout that extends from the base and defines at least one flow path therethrough, the spout having a longitudinal axis; a valve assembly disposed within the at least one flow path, the valve assembly being moveable between a first position wherein the at least one flow path is open and a second position wherein the at least one flow path is closed; and a radially expandable seal disposed about the spout, the seal having a first end, a second end, and an intermediate region between the first and second ends that expands radially outward relative to the longitudinal axis, the radially expandable seal having an inner surface in communication with the at least one flow path, the valve assembly including a body portion and a head portion, the head portion being wider than the body portion and the inner surface of the radially expandable seal, the head portion of the valve assembly having a surface that is received within and cooperates with the radially expandable seal, wherein the cooperation between the surface and the radially expandable seal expands the intermediate region radially outward relative to the longitudinal axis with the valve assembly in the first position.