FIELD: devices for creation of dosed hypoxia in the human or animal organism with prophylactic, therapeutic or rehabilitation purposes. SUBSTANCE: the essence is in hermetic sealing of separated inhalation and exhalation canals, their placement and connection in the body of the means for concentration of carbon dioxide and use of a dustproof seal as a holder of the isolated inhalation canal. EFFECT: reduced dust loading of inhaled mixture, compactness of the device, reduced resistance to breathing at inhalation. 2 cl, 1 dwg
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