Apparatus for the administration of a respiratory gas and at lea

Details Apparatus for the administration of a respiratory gas and at lea Apparatus for the administration of a respiratory gas and at lea

1992-01-16

1993-08-24

Grieb, William H.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820312, 12820413, 12820511, A61M 1600

Patent

active

052379906

ABSTRACT:
An apparatus for the administration of a respiratory gas and at least one anaesthetic to a living being, in which apparatus the anaesthetic is vaporized in a vaporizing unit and is entrained in respiratory gas, acquires a safer and more accurate control of the anaesthetic concentration level by means of a regulating valve which controls the flow of respiratory gas through the vaporizing unit and in that a regulating device controls the regulating valve with such accuracy that a preselected concentration of vaporized anaesthetic in the respiratory gas is substantially fully maintained. To further increase the control of the apparatus it may also be provided with a feedback system for both the anaesthetic concentration level and the total flow.

REFERENCES:
patent: 3794027 (1974-02-01), Johnson
patent: 4702242 (1987-10-01), Broddner et al.
patent: 4770168 (1988-09-01), Rusz et al.
patent: 4905685 (1990-03-01), Olsson et al.

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