FIELD: medical engineering. SUBSTANCE: device has respiratory mask, inhalation and exhalation valves, amplifier unit, integrator unit and recording unit. The inhalation and exhalation valves are designed as ball valves mounted in cylinders to allow the balls to be movable in the cylinders. Magnetic materials coat ball surfaces. Windings connected to the amplifier and integrator units are mounted in cylinder walls. Discharge opening is foreseen in the cylinder with inhalation valve, the opening being positioned above the inhalation valve. The opening is connected to respiratory mask surface. Inlet opening communicating to the external medium is positioned below the inhalation valve. The inlet opening is connected to respiratory mask surface. Discharge opening communicating to the external medium is positioned above the exhalation valve. EFFECT: simplified design; higher measurement accuracy. 6 dwg
