METHOD, DEVICE AND SYSTEM FOR AUTOMATIC CONTROL OF OXYGEN SUPPLY Russian patent published in 2020 - IPC A61M16/12 A61B5/83 A61B5/1455 

FIELD: medical equipment.

SUBSTANCE: group of inventions relates to a method for automatic control of the supply of inhaled oxygen, device for automatic control of supplied inhaled oxygen supply and system for automatic control of oxygen supply. Method for automatic control of oxygen supply comprises a step of receiving signals, which are input values of patient's oxygen saturation (SpO₂). Method includes formation of control values based on input values of SpO₂ and required value of SpO₂. In method output values of concentration of inhaled oxygen (FiO₂) are formed proceeding from control values and reference concentration values of inhaled oxygen (rFiO₂). Control values include instantaneous control values generated based on SpO₂ input values, required SpO₂ value and instantaneous transmission coefficient. Control values contain accumulated control values generated based on SpO₂ input values, required SpO₂ value and accumulated transfer coefficient. Control value include forward-control value generated from input SpO₂ values, the desired values of forecast SpO₂ and the transmission coefficient. Instantaneous control values are calculated based on rFiO₂ value. Non-linear weighting of compensation is applied to accumulated control value based on a predetermined nonlinear relationship between the oxygen partial pressure (PaO₂) in arterial blood and SpO₂. Device comprises an input unit receiving signals representing input values of oxygen saturation (SpO₂) for a patient. Device has memory recording received SpO₂ input values. Device includes a controller which calculates output values of concentration of inhaled oxygen (FiO₂) based on input values of SpO₂. Device comprises output unit outputting calculated output values FiO₂. Controller generates control values based on SpO₂ input values and SpO₂ target value and generates output oxygen concentration values (FiO₂) based on control values and reference concentrations of inhaled oxygen (rFiO₂). System comprises an oxygen saturation control device and an inhaled oxygen control device. System has control device and network, allowing interaction between the oxygen saturation control device and the control device and the interaction between the inhaled oxygen control devices and the control device.

EFFECT: technical result is the effectiveness of prescribing desired SpO₂ and excluding the time of episodes of hypoxia and hyperoxia, meeting the need of all individuals and maintaining the transfer coefficient of the system.

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