Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1997-10-01
1999-11-23
Weiss, John G.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820511, 12820527, 12820422, A62B 710, A62B 1900, A62B 2302
Patent
active
059881658
ABSTRACT:
An oxygen concentrator is utilized in combination with a compressor to provide a highly enriched and compressed oxygen gas in a mobile container such as a gas cylinder. The combination and method of production provides for the facile preparation of an enriched source of oxygen for use by an ambulatory or wheelchair-confined patient. The oxygen concentrator utilizes two or more molecular sieves to provide a breathable gas of from approximately 80 to about 98 percent oxygen from atmospheric air. The oxygen-enriched gas is stored in a concentrator product tank and can be prioritized so as to supply a patient with a proper amount and concentration of oxygen and secondarily to supply any surplus or excess enriched oxygen to a compressor. The compressor utilizes multiple stages to produce the highly compressed oxygen-enriched gas and utilizes a two-part piston at low rpm to enhance low wear and low noise.
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Goertzen Gerold G.
Richey, II Joseph B.
Invacare Corporation
Weiss John G.
Weiss, Jr Joseph F.
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