Metering device for a liquid anesthetic via an intermediate cont

Details Metering device for a liquid anesthetic via an intermediate cont Metering device for a liquid anesthetic via an intermediate cont

1992-02-10

1993-09-14

Burr, Edgar S.

Surgery

Respiratory method or device

Means for mixing treating agent with respiratory gas

12820325, 12820312, 137393, A61M 1600

Patent

active

052439739

ABSTRACT:
A metering device for a liquid anesthetic that is fed from a reservoir via a supply line into a heatable intermediate container maintained under pressure, from which gaseous anesthetic is fed via a metering valve into a fresh gas line. Accurate metering, which can be better monitored, is provided for low-boiling anesthetics. A supply unit 7 is mounted in the supply line 5, and liquid anesthetic is transported by the supply unit 7 into the intermediate container 6 until it is filled up to a predetermined filling level. A heating device 12 stabilizes the temperature of the liquid bath and ensures a sufficiently high vapor pressure of the gaseous anesthetic above the liquid phase. The anesthetic vapor is sent via the metering valve into the fresh gas line.

REFERENCES:
patent: 3351057 (1967-11-01), Goodyear
patent: 3873806 (1975-03-01), Schossow
patent: 4300131 (1981-11-01), Mitsui
patent: 4303601 (1981-12-01), Grimm
patent: 4484576 (1984-11-01), Albarda
patent: 4587966 (1986-05-01), Albarda
patent: 4606866 (1986-08-01), McGlothlin
patent: 4750483 (1988-06-01), Ankartross
patent: 4770168 (1988-09-01), Rusz

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