A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
3/110, 84/39
A61F 2/20 (2006.01) A61M 16/04 (2006.01) A61M 16/20 (2006.01)
Patent
CA 1256653
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.
494528
Depel William A.
Moon Jerald B.
Weinberg Bernd
Bivona Inc.
Osler Hoskin & Harcourt Llp
Purdue Research Foundation
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