Gas flow control system for an anesthesia apparatus

Details Gas flow control system for an anesthesia apparatus Gas flow control system for an anesthesia apparatus

1984-10-23

1986-08-12

Cohan, Alan

Fluid handling

Self-proportioning or correlating systems

Mixture condition maintaining or sensing

137607, A61M 1601

Patent

active

046050345

ABSTRACT:
A gas flow control system for an anesthesia apparatus, which has an oxygen gas pressure reducing valve for reducing primary pressure of oxygen gas to secondary pressure, and a anesthetic gas pressure reducing valve for reducing primary pressure of anesthetic gas to secondary pressure. A pressure control valve is connected to the secondary side of the anesthetic gas pressure reducing valve and responsive to the secondary pressure of the oxygen gas for controlling the secondary pressure of the anesthetic gas. The pressure control valve is so arranged that when the secondary pressure of the oxygen gas is zero, the pressure control valve is closed to cut off the supply of the anesthetic gas.

REFERENCES:
patent: 3534753 (1970-10-01), Ollivier
patent: 3739799 (1973-06-01), Bickford
patent: 3762427 (1973-10-01), Mollering
patent: 3809109 (1974-05-01), Breiling
patent: 4015617 (1977-04-01), Connolly
patent: 4237925 (1980-12-01), Urshida
patent: 4328823 (1982-05-01), Schreiber
patent: 4467834 (1984-08-01), Rochat

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