Humidifier with back-flow prevention valve

Details Humidifier with back-flow prevention valve Humidifier with back-flow prevention valve

A - Human Necessities

62

B

A62B 7/00 (2006.01)

Patent

CA 2623667

A humidifier for use with a pressure support system. The humidifier includes a body (44, 302, 442, 910) having an inlet (36, 308, 448, 914), a fluid holding chamber (46, 318, 454, 912), and an outlet (40, 916). The inlet is positioned upstream and in fluid communication with the fluid holding chamber. The outlet is positioned downstream of and in fluid communication with the fluid holding chamber. A back-flow preventing valve (60, 160, 260, 304, 334, 400, 444, 500, 600, 700, 760, 902, 930, 958, 970, 980) is positioned upstream of the fluid chamber. The back-flow preventing valve is movable between an open position, in which the inlet is unblocked, and a closed position in which the inlet is blocked. In the closed position, the back-flow preventing valve prevents fluid, fluid vapor, or both from entering the pressure support via the inlet to the humidifier.

La présente invention concerne un humidificateur conçu pour être utilisé conjointement avec un système d'assistance inspiratoire. Cet humidificateur comprend un corps (44, 302, 442, 910) pourvu d'un orifice d'amenée (36, 308, 448, 914), d'une chambre renfermant un fluide (46, 318, 454, 912), et d'un orifice de sortie (40, 916). L'orifice d'amenée est placé en amont et en communication fluidique avec la chambre renfermant le fluide. L'orifice de sortie est placée en aval et en communication fluidique avec la chambre renfermant le fluide. Un clapet anti-retour (60, 160, 260, 304, 334, 400, 444, 500, 600, 700, 760, 902, 930, 958, 970, 980) est placé en aval de la chambre renfermant le fluide. Ce clapet anti-retour est mobile entre une position ouverte dans laquelle l'orifice d'amenée est débloqué, et une position fermée dans laquelle l'orifice d'amenée est bloqué. Dans la position fermée, le clapet anti-retour empêche le fluide, la vapeur de fluide, ou ces deux éléments, de pénétrer dans le système d'assistance inspiratoire à travers l'orifice d'amenée de l'humidificateur.

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