FIELD: medical equipment. SUBSTANCE: mask has case 1 with hole 2 for inhalation and expiration and heat exchanger 3 which forms chamber 4 in case between case and hole 2 for inhalation and expiration. Hollow packing 5 manufactured from elastic material which heat conductivity is higher than that of material of case 1 is coupled to chamber 4. One or several holes 6 are made in bottom of hollow packing. EFFECT: improved quality of protection. 6 cl, 2 dwg
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