Unidirectional airflow tracheotomy valve

Details Unidirectional airflow tracheotomy valve Unidirectional airflow tracheotomy valve

1994-07-28

1996-04-09

Burr, Edgar S.

Surgery

Respiratory method or device

Respiratory gas supply means enters mouth or tracheotomy...

128911, A61M 3900

Patent

active

055051987

ABSTRACT:
A tracheotomy valve including a housing defining a chamber therein. The housing having a first opening located in a first plane at one end of the chamber and a second opening located in a vertical plane at another end of the chamber. The vertical plane and said first plane are angled with respect to one another such that a central axis of the first opening and a central axis of the second opening intersect and are angled with respect to one another. The tracheotomy valve also includes a displaceable element disposed in the chamber and movable therein. The displaceable element effects closing of the first opening when in a first position and moves from the first position during inspiration whereby the displaceable element is spaced apart from the first opening and air flows through the housing.

REFERENCES:
patent: 3066674 (1962-12-01), Capra
patent: 3924637 (1975-12-01), Swanson
patent: 4009720 (1977-03-01), Crandall
patent: 4449523 (1984-05-01), Szachowicz et al.
patent: 4459984 (1984-07-01), Liegner
patent: 4573460 (1986-03-01), Szachowicz et al.
patent: 4773412 (1988-09-01), Blom et al.
patent: 4911716 (1990-03-01), Blom et al.
patent: 5048518 (1991-09-01), Eliachar et al.
patent: 5059208 (1991-10-01), Coe et al.
patent: 5107828 (1992-04-01), Koss et al.

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