Method and system for providing breathable air in a closed...

A - Human Necessities – 62 – B

Patent

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Details

A62B 7/00 (2006.01) A62B 7/08 (2006.01)

Patent

CA 2636997

The present invention provides for a closed circuit breathing unit comprising a reservoir bag, oxygen source, CO2 scrubber, and actuation device. The oxygen source and an exit from the scrubber may be fluidly connected to the reservoir bag. The reservoir bag may be attached to a mouthpiece to provide inhalation air. Expired air may be exhaled through the mouthpiece and directed to an inlet for the scrubber. As a user breathes normally, expired air is scrubbed of excess CO2, mixed with generated oxygen, and delivered to the user for inhalation within a closed circuit. Additionally, the oxygen source and the scrubber may be replaced and/or replenished without compromising or interrupting a breathing cycle.

La présente invention concerne un module de respiration en circuit fermé comprenant un sac réservoir, une source d'oxygène, un épurateur de CO2 et un actionneur. La source d'oxygène et une sortie de l'épurateur peuvent être raccordées de manière fluidique au sac réservoir. Le sac réservoir peut être fixé à un embout buccal pour générer l'air d'inhalation. L'air expiré peut être exhalé par l'embout buccal et dirigé vers un orifice d'admission de l'épurateur. Lorsque l'utilisateur respire normalement, l'air expiré est épuré de CO2excédentaire, mélangé à l'oxygène généré et envoyé à l'utilisateur pour une inhalation dans un circuit fermé. De plus, la source d'oxygène et l'épurateur peuvent être remplacés et/ou remplis sans compromettre ou interrompre un cycle de respiration.

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