Insulated breathing tube

Details Insulated breathing tube Insulated breathing tube

1995-01-03

1997-04-29

Asher, Kimberly L.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820417, 12820714, 128911, A61M 1600, A62B 700, F24J 300

Patent

active

056239220

ABSTRACT:
The present invention includes a method for preventing heat loss from the inhalent gas in a recirculatory aided breathing circuit thereby reducing internal vapor condensation commonly associated with such breathing circuits while also stabilizing the relative temperature and humidity within such breathing circuits. A thin flexible partially longitudinally compressed casing is provided to surround a thicker corrugated tube to provide an insulating dead air space therebetween. In another arrangement selected enlarged corrugations are provided in spaced relation along the corrugated tube to engage the inner surface of the casing in a preselected spaced arrangement with respect to said corrugated tube to compartmentalize insulating dead air spaces between the tube and the casing.

REFERENCES:
patent: 3383875 (1968-05-01), Haas
patent: 4013122 (1977-03-01), Long
patent: 4415389 (1983-11-01), Medford et al.
patent: 5377670 (1995-01-01), Smith

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