SIMULTANEOUS ASSESSMENT OF RESPIRATORY PARAMETERS BY REGIONAL APPROXIMATION OF BREATHING PARAMETERS Russian patent published in 2020 - IPC A61M16/00 

FIELD: medicine.

SUBSTANCE: group of inventions refers to medical equipment, namely to a medical artificial pulmonary ventilation system, a non-continuous data carrier and a method for assessing pressure of respiratory muscles during breathing. System comprises an artificial ventilation apparatus (10) for supplying air flow under a positive pressure to ventilated patient (12). System includes pressure sensor (40) for measuring pressure P_y(t) of air inhaled or exhaled by ventilated patient (12). System has flow rate sensor (42) for measuring flow air passing into ventilated patient or escaping from it. System comprises device (44) for monitoring an artificial pulmonary ventilation apparatus. Device comprises a microprocessor for assessing pressure of respiratory muscles during breathing by dividing respiratory time interval on area (60) of approximation and simultaneous evaluation of resistance R and extensibility C or respiratory elasticity E and pressure P_mus(t) of respiratory muscles in each region by approximating to time series of samples P_y(t) and in this region. Non-ordinary data medium storing instructions for reading and executing by one or more microprocessors of medical apparatus (10) of artificial pulmonary ventilation, to ensure the medical apparatus implementation of the artificial ventilation of the lungs of the respiratory pressure estimation method during respiration. Method for assessing pressure of respiratory muscles during breathing involves receiving measured pressure values P_y(t) of air inhaled or exhaled by ventilated patient (12). Method involves receiving measured air flow values passing into the ventilated patient or leaving the ventilated patient. Method includes separation of breathing time interval on approximation area (60) and in each approximation region solution of equation: or where V(t) expresses the net air volume supplied to the patient, calculated by integrating said air flow , P₀ is constant, for simultaneous evaluation of resistance R and extensibility C or elasticity E of respiratory system and pressure P_mus(t) of respiratory muscles in each approximation area by approximating to time series of samples P_y(t) and in this approximation area.

EFFECT: technical result is provision of non-invasive assessment of respiratory parameters with improved computational reliability of data analysis.

15 cl, 10 dwg