Air circulating surgical mask unit

Details Air circulating surgical mask unit Air circulating surgical mask unit

1989-05-08

1990-08-28

Burr, Edgar S.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820115, 12820621, 12820712, A62B 1802

Patent

active

049516620

ABSTRACT:
A surgical mask unit characterized by its comfort and ability to eliminate eyeglass fogging by utilizing a housing adjacent the surgical mask having a volume considerably larger than the mask volume permitting the breath to be substantially removed from the mask during each breathing cycle. Preferably, the housing is in the form of a loop encircling the wearer's neck, and a circulating fan may be located in the housing to augment the advantages and draw fresh air into the housing through a controlled inlet.

REFERENCES:
patent: 3058463 (1962-10-01), Goodrich, Jr.
patent: 3625207 (1971-12-01), Agnew
patent: 3747599 (1973-07-01), Malmin
patent: 4121571 (1978-10-01), Pickering
patent: 4296746 (1981-10-01), Mason, Jr. et al.
patent: 4469097 (1984-09-01), Kelman

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