Lung test device

Abstract

Device for determining measured values ​​describing the function of a patient's lungs, comprising as device elements a mouthpiece (1) comprising a tube for introducing and drawing in air, a gas measuring chamber (2, 3), wherein at least one of the following gas sensors for determining the relevant measured values ​​is arranged in the gas measuring chamber (2, 3): nitric oxide sensor, carbon dioxide sensor, oxygen sensor, carbon monoxide sensor, multi-gas sensor, volatile organic compound sensor, alkane sensor, infrared sensor and / or light wave sensor and / or resistance sensor and / or semiconductor sensor, wherein the gas measuring chamber (2, 3) is separated into a first gas measuring chamber (2) and a second gas measuring chamber (3) by a closable opening, wherein the second gas measuring chamber (3) is a closed or closable space.which closable opening, when exhaling and thus introducing breathing air into the device, releases a first flow path (22) from the first gas measuring chamber (2) into the second gas measuring chamber (3), wherein at least one gas sensor is arranged in the second gas measuring chamber (3).