Tracheostomy valve

Details Tracheostomy valve Tracheostomy valve

1984-02-06

1985-09-03

Recla, Henry J.

Surgery

Respiratory method or device

Respiratory gas supply means enters mouth or tracheotomy...

623 9, A61M 1600

Patent

active

045386072

ABSTRACT:
A permanent tracheostoma is often necessary in patients with respiratory diseases such as severe bronchial asthma or chronic bronchitis in order to reduce dead space. Another group of patients who require a permanent tracheostoma are those with laryngeal stenoses or bilateral vocal cord pareses whose general condition makes them unsuitable candidates for more advanced surgical procedures.
The invention provides a two-way tracheostoma valve adjustable for either inspiration and expiration or for inspiration only in which case it also serves as a speech valve.
The valve comprises three main elements: a cylindrical housing, a complementary shaped cover, and a disc-like-element disposed within said housing and cover and arranged for displacement therein. The cover has a circular end having an off-center opening forming an air inlet/outlet or inlet only depending on the position of the cover.

REFERENCES:
patent: 3066674 (1962-12-01), Capra
patent: 3137299 (1964-06-01), Tabor
patent: 3263684 (1966-08-01), Bolton
patent: 3827440 (1974-08-01), Birch et al.
patent: 3844290 (1974-10-01), Birch et al.
patent: 4040428 (1977-08-01), Clifford
patent: 4325366 (1982-04-01), Tabor

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