Anesthetic vaporizer filling system

A - Human Necessities – 61 – M

Patent

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Details

A61M 16/18 (2006.01) A61J 1/00 (2006.01) A61J 1/20 (2006.01) B65D 47/38 (2006.01)

Patent

CA 2186891

A system is provided for the delivery of a liquid anesthetic agent to an anaesthetic vaporizer (20). The system includes a supply container (24) having a spout (40) defining an outlet through which the agent can be discharged. A reservoir is provided in the vaporizer (20) for holding the agent, and a receiving station (22) is provided on the vaporizer (20) for receiving the container spout (40). The agent flows from the container (24) through the spout (40) by gravity into the reservoir. The container spout (40) is located at the station (22) to define the maximum liquid level of the agent in the vaporizer (20) when gas flow into the container (24) is blocked by the rising level of the liquid agent. In one embodiment, a frangible seal (50) is provided in the container (24), an outlet valve (96) is provided in the container (24), and an inlet valve (132) is provided in the receiving station (22). The valves (96, 132) open automatically as the container (24) is inserted into the receiving station (22) of the vaporizer (20). Also the container spout (40) is preferably movable relative to a collar (36) so as to automatically effect rupture of the frangible membrane (50) as the container (24) is inserted into the receiving station (22) of the vaporizer (20).

Système de distribution d'un agent anesthésique liquide à un vaporisateur (20) comportant un récipient d'alimentation (24) muni d'un goulot (40) constituant l'orifice de sortie de l'anesthésique. Le vaporisateur comporte un réservoir d'anesthésique (20) et un élément récepteur (22) où s'engage le goulot (40) du récipient. L' anesthésique passe par gravité du récipient (24) au réservoir en empruntant le goulot (40). Le goulot (40) du récipient est positionné dans l'élément récepteur (22) de façon à ce que le niveau maximum de l'anesthésique dans le vaporisateur (20) soit celui où la montée du liquide provoque le blocage du flux gazeux dans le récipient (24). Dans l'une des variantes, le récipient (24) est muni d'une membrane frangible (50) et d'une soupape d'évacuation (96), et l'élément récepteur (22), d'une soupape d'admission (132). Ces soupapes (96, 132) s'ouvrent automatiquement lorsqu'on insère le récipient (24) dans l'élément récepteur (22) du vaporisateur (20). Le goulot (40) du récipient est de préférence mobile par rapport à un collier (36) de façon à provoquer automatiquement la rupture de la membrane frangible (50) lors de l'insertion du récipient (24) dans l'élément récepteur (22) du vaporisateur (20).

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