Patent RU-2745983-C1 (RU)
IPC: A61M16/00
Filed: 2020-07-09
Granted: 2021-04-05
Abstract: FIELD: medicine. 
     SUBSTANCE: invention relates to medical technology, namely to a device for forced ventilation with the removal of excess moisture from the patient's respiratory tract. The device contains a pulse oximetry sensor for continuous measurement of the oxygen content in the patient's blood during the treatment procedure, an air turbine connected through a valve block with a branch pipe for connecting measurement sensors, connected through an air antibacterial filter with a respiratory circuit for connecting to the patient's oxygen mask. The device also contains a control unit for processing the parameters of the patient's self-breathing at the diagnostic stage of the treatment procedure and calculating the parameters of the algorithm for the forced stage of ventilation of the respiratory system, connected to the valve block and the turbine control unit for changing the pressure level in the respiratory circuit. The device has a pressure sensor connected to the outlets of the branch pipe to measure the pressure in the respiratory circuit for recording the duration of the inhalation, pause duration and exhalation duration of the patient at the diagnostic stage of the treatment procedure. The device includes a sensor for measuring the air flow in the respiratory circuit for registering the respiratory volume on inhalation and the respiratory volume on exhalation at the diagnostic and forced stages of the treatment procedure, and a sensor for measuring the pressure in the respiratory circuit for controlling the settings at the forced stage of the treatment procedure. The sensor outputs are connected to the corresponding inputs of the control unit. The device made with a possibility to operate in the first or second mode of the intensity. In the first mode, the starting value of the positive pressure Ip in the inhaled air flow for the duration of inhalation is equal to 10 hPa and the starting value of the negative pressure Ep in the exhaled air flow for the duration of exhalation is equal to 15 hPa. Starting from the second cycle of breathing, the values of the parameters Ip and Ep are increased in each subsequent cycle by 5 hPa to the level when the current value of the volume of forced exhalation reaches four times the average value of air volume on exhalation Vecp measured during ten cycles of the patient independent breathing. In the second mode, the starting value of the positive pressure Ip in the inhaled air flow for the duration of inhalation is equal to 15 hPa and the starting value of the negative pressure Ep in the exhaled air flow for the duration of exhalation is equal to 25 hPa. Starting from the second cycle of breathing, the values of the parameters Ip and Ep are increased in each subsequent cycle by 10 hPa to the level when the current value of the volume of forced exhalation reaches eight times the average value of air volume on exhalation Vecp measured during ten cycles of the patient independent breathing.  
     EFFECT: increased efficiency of forced ventilation of the respiratory system with the removal of excess moisture. 
     3 cl, 2 dwg