Humidity exchanger in an apparatus for respiration and anasthesi

Details Humidity exchanger in an apparatus for respiration and anasthesi Humidity exchanger in an apparatus for respiration and anasthesi

1976-05-28

1977-09-20

Howell, Kyle L.

Surgery

Respiratory method or device

Ozone or ion generation

128192, 55269, 261104, 261DIG65, A61M 1600

Patent

active

040489930

ABSTRACT:
A humidity exchanger in an apparatus for respiration and anasthesia comprises an inhalation air conduit which is juxtaposed to an exhalation air conduit and separated therefrom by a diffusion foil which permits the passage of a vapor therethrough but not a liquid. Both the inhalation and exhalation conduits are connected at their one ends to the respirator and at their opposite ends they are connected together and to a mouthpiece for use by the patient. The temperatures in both conduits adjacent the mouthpiece are maintained at temperatures so that there is a temperature difference between the inhalation air and the exhalation air in the respective conduits to thus provide a condensation zone. Another zone is provided toward the opposite end of the two conduits in which the temperatures between the air and the two conduits is maintained substantially the same so as to define a diffusion zone. The foil advantageously comprises a fluorinated hydrocarbon polymer which is hygroscopic. The entire humidity exchanger comprising the two conduits is advantageously surrounded by heat insulation and the exhaling duct may advantageously be provided with a heater adjacent the mouthpiece end in the condensation zone. The inhalation air conduit is also advantageously provided with a humidifier.

REFERENCES:
patent: 2610038 (1952-09-01), Phillips
patent: 3976450 (1976-08-01), Marcote et al.

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