Air filter for the nose

Details Air filter for the nose Air filter for the nose

1994-06-07

1995-05-23

Hafer, Robert A.

Surgery

Respiratory method or device

Means for removing substance from respiratory gas

12820412, 128858, A61M 1508

Patent

active

054172055

ABSTRACT:
An air filter including two filter units linked by a connecting element for inserting into the nostrils of the nose to filtrate air passing through, each filter unit including a barrel, a first wire gauze filter fastened to the barrel at one end, a second wire gauze filter fastened to the barrel at an opposite end, and a stack of wet filter cloth received inside the barrel and retained between the first wire gauze filter and the second wire gauze filter.

REFERENCES:
patent: 1317013 (1919-09-01), Ford
patent: 2162583 (1939-06-01), Kjellsson
patent: 2192093 (1940-02-01), Moore
patent: 2237954 (1941-04-01), Wilson
patent: 2433565 (1947-12-01), Korman
patent: 2672138 (1954-03-01), Carlock
patent: 2890695 (1959-06-01), Safstrom
patent: 3457917 (1969-07-01), Mercurio
patent: 3463149 (1969-08-01), Albu
patent: 3905335 (1975-09-01), Kapp
patent: 4052983 (1977-10-01), Bovender
patent: 4221217 (1980-09-01), Amezcua
patent: 4267831 (1981-05-01), Aguilar
patent: 4887597 (1989-12-01), Holland
patent: 5113857 (1992-05-01), Dickerman et al.

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