Mask for preventing permeation of foreign material

Details Mask for preventing permeation of foreign material Mask for preventing permeation of foreign material

1998-08-27

2000-11-14

Brown, Michael A.

Surgery

Respiratory method or device

Means for removing substance from respiratory gas

12820621, 12820622, A62B 1802

Patent

active

061455040

ABSTRACT:
A mask for preventing passage of a liquid type foreign material of the invention is formed of a liquid absorbing layer for absorbing the liquid type foreign material applied thereto, and a liquid transmission prevention layer disposed on the liquid absorbing layer at a downstream side of air flowing through the mask. The liquid transmission prevention layer prevents the liquid type foreign material, such as humor, absorbed by the liquid absorbing layer from contacting a wearer.

REFERENCES:
patent: 4920960 (1990-05-01), Hubbard et al.
patent: 5699791 (1997-12-01), Sukiennik et al.

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