Variable aperture venting for respiratory mask

Details Variable aperture venting for respiratory mask Variable aperture venting for respiratory mask

A - Human Necessities

61

M

A61M 16/06 (2006.01) A61M 16/20 (2006.01) A61M 16/00 (2006.01)

Patent

CA 2387228

A respiratory mask (200) having a variable flow venting is provided according to the invention, including a gas supply hose (209), a mask shell (206) adapted to output a gas to a respiratory system of a person, the mask shell (206) adapted to be connected to the gas supply hose (209), and an exhaust gas flow volume regulating device (220) which maintains a substantially constant gas flow volume out of the respiratory mask (200) independent of an internal gas pressure inside the respiratory mask (200).

L'invention concerne un masque respiratoire (200) avec un système de ventilation à débit variable. Ce masque comprend un tuyau d'alimentation en gaz (209), une enveloppe de masque (206) adaptée pour émettre un gaz dans le système respiratoire d'une personne. Cette enveloppe (206) est adaptée pour être reliée au tuyau d'alimentation en gaz (209). Ce système comporte aussi un dispositif de régulation du volume de gaz d'échappement (220) qui maintient un volume de gaz constant hors du masque respiratoire (200) indépendamment de la pression de gaz interne à l'intérieur du masque respiratoire (200).

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