Heating and humidifying respiratory mask

Details Heating and humidifying respiratory mask Heating and humidifying respiratory mask

1995-12-29

1996-11-05

Millin, V.

Surgery

Respiratory method or device

Inhaled gas heated or humidified by exhaled gas

12820417, 12820326, 12820525, 12820622, A62B 1808

Patent

active

055706843

ABSTRACT:
A light-weight face mask can heat and humidify inhaled air with previously-exhaled air by passing the air through a highly-effective and highly-efficient heat exchanger disposed within the mask. The heat exchanger has a multitude of layers of metallic mesh through which the air passes generally linearly. The warm exhaled air heats the mesh which in turn heats the incoming air before it is inhaled. Moisture from the exhaled air condenses on the relatively-cool heat exchanger and humidifies the incoming air. Inhaled air enters the mask generally upwardly, and exhaled air exits it generally downwardly.

REFERENCES:
patent: 2381568 (1942-10-01), Booharin
patent: 2741246 (1956-04-01), Litchfield
patent: 3835853 (1974-09-01), Turner
patent: 4136691 (1979-01-01), Ebeling et al.
patent: 5007114 (1991-04-01), Numano
patent: 5010594 (1991-04-01), Suzuki et al.
patent: 5433192 (1995-07-01), Ebeling
patent: 5435299 (1995-07-01), Langman

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