Tracheostomy valves and related methods

Details Tracheostomy valves and related methods Tracheostomy valves and related methods

A - Human Necessities

61

M

A61M 16/20 (2006.01) A61M 16/04 (2006.01)

Patent

CA 2694942

The embodiments of the present tracheostomy valves include a flexible diaphragm abutting a rib shaped substantially as a flat plate. Opposite the rib, the diaphragm abuts a boss and forms an uninterrupted seal therewith. As the tracheostomized patient inhales, the diaphragm bends about the rib, interrupting the seal and allowing air to flow smoothly into the valve. The features of the various embodiments contribute to a positive seal at all times except during inhalation, and low resistance to airflow through the valve during inhalation.

L'invention concerne des valvules de trachéostomie comprenant un diaphragme flexible venant en butée contre une nervure sensiblement en forme de plaque plate. A l'opposé à la nervure, le diaphragme vient en butée contre un bossage et forme un joint ininterrompu avec celui-ci. À mesure que le patient trachéostomisé inhale, le diaphragme s'incurve autour de la nervure, brise le joint et permet à l'air de circuler régulièrement dans la valvule. Les particularités des divers modes de réalisation contribuent à fournir un joint positif constant sauf pendant l'inhalation ainsi qu'une faible résistance à la circulation d'air dans la valvule pendant l'inhalation.

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