METHOD FOR REDUCING TURBULENCE AND SUBSEQUENT ANALYSIS OF DYNAMIC GAS MEDIA, AS WELL AS A DEVICE FOR ITS IMPLEMENTATION, EMBEDDED IN A BREATHING MASK Russian patent published in 2022 - IPC A61B5/08 A61B5/205 G01N21/61 G01N33/497 

FIELD: medical technology.

SUBSTANCE: proposed group of inventions relates to the field of medical technology, namely, a method for analyzing dynamic gas media for non-invasive monitoring of the condition of an object, continuous assessment of the functional state of biological systems of the body, carrying out diagnostic measures and a device for its implementation. The method is carried out by the method for absorption laser spectroscopy, based on a continuous analysis of the passing flow of exhaled air over the entire cross-sectional area of the air trunk using a set of optical cells consisting of reflective surfaces and selected monochromatic pairs of emitter-receivers, and a complex of pressure and humidity sensors built into the air trunk. Before entering the set of optical cells, the exhaled air flow turbulence is reduced using a perforated flap that blocks the exhaled air flow. The aerodynamic characteristics of the exhaled air flow are regulated by turning the perforated flap according to the throttle principle. The flap is rotated in such a way as not to block the optical path of the laser beam in the optical cell from the emitter to the receiver. A series of holes on the perforated flap is arranged in such a way that the gas jets at the exit of the holes pass perpendicular to the laser beams going in the optical cells from the emitter to the receiver. The device is based on an optical cell consisting of a monochromatic emitter based on a laser and a radiation receiver. The device is designed with the possibility of embedding a breathing mask into the exhalation line behind the exhalation valve. The selection of optical cells is carried out in accordance with a pre-selected set of detectable gases according to the task set for each specific case and can be implemented as a single optical cell or sequentially installed optical cells, which can be combined into a set of two or more cells depending on the number of detectable components of the gas mixture. The optical path of the beam from the emitter to the receiver is designed to provide overlap of the entire cross-sectional area of the air trunk, which is realized due to the orientation of the emitter and receiver relative to each other and the reflective characteristics of the working surfaces of the optical cell. The device is also designed to record the characteristics of the passing flow of exhaled air using a set of pressure and humidity sensors. A perforated flap is also installed, which is made with the possibility of blocking the flow of exhaled air, made with the possibility of reducing the turbulence of the flow of exhaled air. The device is equipped with a control unit, made with the ability to provide the required mode of removing and decrypting information. The device is made with the possibility of adjusting the aerodynamic characteristics of the exhaled air flow, in which the perforated flaps are equipped with a rotation mechanism made with the possibility of acting on the principle of a throttle. The flap is rotated in such a way as not to block the optical path of the laser beam from the emitter to the receiver. The flap perforation scheme is selected in such a way that the gas jets at the exit from the holes pass perpendicular to the laser beams going in the optical cells from the emitter to the receiver.

EFFECT: adjustment of the air flow and the continuous determination and interpretation of changes in the composition of the exhaled gas mixture in real time for a long period directly in the exhalation line of the breathing mask.

14 cl, 2 dwg