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1. (WO2010114372) TRACHEOSTOMA VALVE

Pub. No.:    WO/2010/114372    International Application No.:    PCT/NL2010/050165
Publication Date: Fri Oct 08 01:59:59 CEST 2010 International Filing Date: Thu Apr 01 01:59:59 CEST 2010
IPC: A61M 16/04
Applicants: RIJKSUNIVERSITEIT GRONINGEN
ACADEMISCH ZIEKENHUIS GRONINGEN
VAN DER HOUWEN, Eduard Berend
VERKERKE, Gijsbertus Jacobus
VAN DER LAAN, Bernandus Franciscus Augustinus Maria
Inventors: VAN DER HOUWEN, Eduard Berend
VERKERKE, Gijsbertus Jacobus
VAN DER LAAN, Bernandus Franciscus Augustinus Maria
Title: TRACHEOSTOMA VALVE
Abstract:
A tracheostoma valve (1) comprises a main air passage structure (21, 41, 42) provided with a main valve arrangement. The tracheostoma valve is switchable in response to a spurt of inhalation air from a breathing condition into a speaking condition, while the tracheostoma valve is switchable in response to a spurt of exhalation air from said speaking condition into said breathing condition. The main valve arrangement comprises an at least partly flexible bistable wall portion (22, 23, 24) which has a circumferential bordering edge (23). At least part of the bordering edge forms a hinging means around which the bistable wall portion is hingeable between a first stable position in which an orifice (41) of the main air passage structure is being blocked, and a second stable position in which said orifice is released.