Breathing apparatus

Details Breathing apparatus Breathing apparatus

1978-09-01

1980-04-08

Michell, Robert W.

Surgery

Respiratory method or device

Inhaled gas heated or humidified by exhaled gas

12820417, A61M 1500, A62B 700

Patent

active

041967283

ABSTRACT:
A breath warming apparatus which comprises a flexible, lightweight casing in the shape of a curved, generally symmetrical horn of expanding cross section, having a flared internal chamber containing metal mesh. This mesh will retain the heat and expired moisture of the wearer and will in turn warm and humidify the air being inhaled through the device. A mouthpiece, designed to minimize resistance to airflow to and from the oral cavity, provides the immediate aperture through which the user breathes when using the apparatus. Relatively large exit ports allow for high volume transfer of air.

REFERENCES:
patent: 1603021 (1898-04-01), Dight
patent: 2876631 (1959-03-01), Bailey
patent: 3295522 (1967-01-01), Johnson
patent: 3326214 (1967-06-01), McCoy
patent: 3333585 (1967-08-01), Barghini et al.
patent: 3609941 (1971-10-01), Eldredge
patent: 3707966 (1973-02-01), Nebel
patent: 3747598 (1973-07-01), Cowans
patent: 4044531 (1977-08-01), Marchello et al.

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