Patent ID: 7370654
Filing Date: 2008-05-13
Classification: A61M

Abstract:
1. A tracheostoma valve adapted to control the flow of air through a tracheostoma comprising: a tubular housing having a first end and a second end, said first end being open and to be connected to the tracheostoma; a shut-off valve member normally open to allow air flow through the housing from said first end to the ambient atmosphere and closing at a predetermined air flow rate; a normally closed cough valve member controlling an opening at said second end to open in response to a particular pressure achieved in said housing, and to close automatically at reduction of the air pressure, wherein a wall of said housing forms at least one side opening, and the shut-off valve comprises a flexible diaphragm mounted in said housing and shaped to normally assume a curled position spaced from the inside surface of said wall, and to engage said surface, closing said at least one side opening, at said predetermined air flow rate.