A respiratory gas supply circuit to feed crew members and...

A - Human Necessities – 62 – B

Patent

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Details

A62B 7/14 (2006.01)

Patent

CA 2657471

The invention relates to a respiratory gas supply circuit (1) for an aircraft carrying passengers and crewmembers (30), comprising a source of breathable gas (R1, R2), at least one supply line (2) connected to said pressurized source, a regulating device (12) provided on said supply line for controlling the supply of breathable gas, a mixing device (9) provided on said supply line, said mixing device further comprising an ambient air inlet (10) for mixing said ambient air with said breathable gas to provide to at least one passenger or crewmember a respiratory gas corresponding to a mixture of said breathable gas and ambient air, wherein said regulating device is driven by a control signal (FIO2 R) function at least of the arterial blood oxygen saturation (SaO2) measured on said at least one passenger or crewmember.

L'invention concerne un circuit d'alimentation en gaz respiratoire (1) pour un aéronef transportant des passagers et des membres d'équipage (30). Ledit circuit d'alimentation comprend une source de gaz respirable (R1, R2), au moins une ligne d'alimentation (2) reliée à une source pressurisée, un dispositif de régulation (12) disposé sur la ligne d'alimentation pour commander l'alimentation en gaz respirable, un dispositif de mélange (9) disposé sur ladite ligne d'alimentation, ce dispositif de mélange comprenant en plus une entrée d'air ambiant (10) pour mélanger l'air ambiant avec le gaz respirable afin de fournir à au moins un passager ou un membre d'équipage un gaz respiratoire correspondant à un mélange du gaz respirable et de l'air ambiant, ledit dispositif de régulation étant commandé par un signal de commande (FIO2 R) en fonction au moins de la saturation (SaO2) du sang artériel en oxygène mesurée sur ledit passager ou membre d'équipage.

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