APPARATUS FOR ANALYZING VOLATILE ORGANIC COMPOUNDS IN HUMAN EXHALED AIR Russian patent published in 2024 - IPC A61B5/08 A61B5/93 A61B10/00 G01N33/497 G01N27/26 G01N27/414 

FIELD: medical equipment.

SUBSTANCE: device for analyzing volatile organic compounds in exhaled air comprises a housing, an inlet for sampling expired air, an inlet for sampling atmospheric air, outlet for removal of atmospheric air sample and expired air sample, two isolated from each other gas sensor cells, two air channels, controlled electromagnetic valves, membrane pumps, measuring and control unit, as well as a valve and pump control unit. First air channel connects the first cell to the exhaled air sample intake and the spent samples output. Second air channel connects the second cell with an inlet of atmospheric air intake and an outlet of waste samples discharge. Valves and pumps are installed in air channels so that to provide flow of atmospheric air sample into both cells, or an exhaled air sample flow into the first cell and an atmospheric air sample flow into the second cell, or an exhaled air sample flow into the first cell only. Microcontroller of measuring-control unit provides comparison of responses of gas sensors of cells with test responses corresponding to confirmed or refuted diagnosis, as well as issuing, based on the comparison results, information on whether a person is sick with said disease or not.

EFFECT: higher validity of exhaled air analysis results due to taking into account changes in the composition of the surrounding atmospheric air that the people being diagnosed breathe.

11 cl, 2 dwg