Tracheostoma valves

Details Tracheostoma valves Tracheostoma valves

1984-11-26

1986-04-15

Pellegrino, Stephen C.

Surgery

Respiratory method or device

Respiratory gas supply means enters mouth or tracheotomy...

12820716, 1375123, 623 9, A61M 500

Patent

active

045820589

ABSTRACT:
A tracheostoma valve assembly for use with a tracheostomy tube or a speech prosthesis device includes a tubular housing structure containing a spring biased main valve which, during normal vegetative breathing, will remain open, and which, during normal air flow associated with speech, will close. The valve assembly includes a separate external relief valve which is closed during normal vegetative breathing and speaking and which opens to release the increased air pressure within the tubular housing resulting from a substantially increased air pressure within the valve assembly and automatically closes when the air pressure is reduced in the valve assembly.

REFERENCES:
patent: 2339048 (1944-01-01), Bixler
patent: 3228409 (1966-01-01), Godel
patent: 3342200 (1967-09-01), Wilcox
patent: 3683931 (1972-08-01), Chelucci et al.
patent: 3692071 (1972-09-01), Begleiter
patent: 4106502 (1978-08-01), Wilson
patent: 4325366 (1982-04-01), Tabor
patent: 4494252 (1985-01-01), Chaoui

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