BREATHING PROTECTION DEVICE Russian patent published in 1995 - IPC

FIELD: medical engineering. SUBSTANCE: device has mask, means for removing microorganisms from inhaled air, means for changing CO₂ concentration in the inhaled gas mixture and a sack connected in series to form integral air duct for breathing in and out, as well as atmospheric air intake unit with regulator. Means for removing microorganisms from inhaled air made in the form of removable casing with antiviral and antibacterial filters. Means for changing CO₂ concentration is hollow cylinder filled with CO₂ absorber, for example poly(chloroisoprene). The sack filters and mask are removable. Atmospheric air intake unit has a number of holes in branch pipes of the absorber. Regulator is a set of plugs having holes of various diameters mounted in the main holes of a branch pipe on the side of mask to enable the holes to close all together or one after another. EFFECT: enhanced effectiveness in carrying out prophylactic, therapeutic and rehabilitative treatment by means of normobaric hypoxygenation. 1 dwg