Inhalation valve

Details Inhalation valve Inhalation valve

1996-07-01

1998-11-03

Lewis, Aaron J.

Surgery

Respiratory method or device

Means using rescuer's breath for supplying respiratory gas...

12820311, 12820524, A61M 1600

Patent

active

058294333

ABSTRACT:
Film made of floppy and deformable synthetic resin is used as a valve body of an inhalation valve and attached to the surface of a valve seat which is formed to a concave groove like shape having an arbitarily sectional view. The said valve body can not be applied to a conventional valve seat which has a flat surface. The inhalation valve is embedded to the breathing-in space of mask in which a filter pad is put in and prevent the valve body which separates from the seat at inhalation timing from entering into face contact part.

REFERENCES:
patent: 3626936 (1971-12-01), Barker
patent: 4819628 (1989-04-01), Eisenberg et al.
patent: 5005568 (1991-04-01), Loescher et al.
patent: 5088485 (1992-02-01), Schock
patent: 5119809 (1992-06-01), Gerson
patent: 5127397 (1992-07-01), Kohnke
patent: 5355877 (1994-10-01), Cheng

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