Inert gas environmental control system for a hyperbaric chamber

Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure

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A61M 1602

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active

046338594

ABSTRACT:
A control system for a hyperbaric chamber and method for doing same which provides for an initial purging of a portion of the oxygen contained in the air within the chamber until an analyzer detects that the oxygen concentration has been reduced below the oxygen concentration of air at one atmosphere absolute pressure. Having reduced the oxygen concentration within the chamber using a pressurized inert gas, valves are operated to pressurize the chamber at a desired rate to a desired value. The patient within the chamber is connected to an independent breathing system where breathing gas is delivered to the patient at substantially the same pressure as the pressure in the hyperbaric chamber.

REFERENCES:
patent: 3547118 (1970-12-01), Kolman et al.
patent: 3587438 (1971-06-01), Foster et al.
patent: 3680557 (1972-08-01), Donigvian
patent: 3754551 (1973-08-01), Nielsen
patent: 4274405 (1981-06-01), Schmidt et al.
patent: 4452242 (1984-06-01), Banziger

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