Humidification in respiratory systems

Details Humidification in respiratory systems Humidification in respiratory systems

1987-07-13

1989-08-29

Fox, John

Gas and liquid contact apparatus

Contact devices

Porous sheet

12820413, 12820316, B01F 304

Patent

active

048615234

ABSTRACT:
Respiratory gas is humidified by flowing it along a flowpath at least a portion of whose wall is formed of a barrier material which is pervious to water vapor and impervious to water while the side of said wall opposite the flowpath is subjected to one or both of water and water vapor. Production of such a flowpath can be accomplished by compressing and bonding together selected portions of a resilient, open-celled material which is disposed as a layer between layers of water impermeable material at least one of which layers is permeable by water vapor.

REFERENCES:
patent: 3432357 (1969-03-01), Danhere
patent: 3532276 (1970-10-01), Schoen, Jr.
patent: 3902486 (1975-09-01), Guichard
patent: 4146597 (1979-03-01), Echstein et al.
patent: 4381267 (1983-04-01), Jachson
patent: 4430994 (1984-02-01), Clawson et al.
patent: 4705033 (1987-11-01), Halfpenny
patent: 4708831 (1987-11-01), Elsworth et al.

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