WO2021012127A1 - Medical ventilation method and device, ventilator, and computer readable storage medium - Google Patents

Medical ventilation method and device, ventilator, and computer readable storage medium Download PDF

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Publication number
WO2021012127A1
WO2021012127A1 PCT/CN2019/096912 CN2019096912W WO2021012127A1 WO 2021012127 A1 WO2021012127 A1 WO 2021012127A1 CN 2019096912 W CN2019096912 W CN 2019096912W WO 2021012127 A1 WO2021012127 A1 WO 2021012127A1
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WIPO (PCT)
Prior art keywords
pressure
gas
branch
flow rate
gas flow
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PCT/CN2019/096912
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French (fr)
Chinese (zh)
Inventor
伍乐平
蔡琨
刘华旺
周小勇
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深圳迈瑞生物医疗电子股份有限公司
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Application filed by 深圳迈瑞生物医疗电子股份有限公司 filed Critical 深圳迈瑞生物医疗电子股份有限公司
Priority to PCT/CN2019/096912 priority Critical patent/WO2021012127A1/en
Priority to CN201980098497.6A priority patent/CN114126698A/en
Publication of WO2021012127A1 publication Critical patent/WO2021012127A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/12—Preparation of respiratory gases or vapours by mixing different gases

Definitions

  • the embodiments of the present invention relate to the technical field of medical devices, and in particular, to a medical ventilation method and device, a ventilator, and a computer-readable storage medium.
  • High Frequency Ventilation is a ventilation mode that maintains a higher ventilation frequency, lower tidal volume, and lower airway pressure.
  • HBV High Frequency Ventilation
  • the embodiments of the present invention expect to provide a medical ventilation method and device, a ventilator, and a computer-readable storage medium, which can improve the accuracy of flow measurement.
  • the embodiment of the present invention provides a medical ventilation device, the device includes:
  • a first branch connected to the first gas input port
  • a second branch connected to the second gas input port
  • a mixing chamber connected to the first branch and the second branch;
  • a high-frequency oscillation generating device connected to the mixing cavity
  • a flow sensor for detecting the gas flow velocity in the first branch and the second branch respectively
  • a pressure sensor that detects the gas pressure in the first branch and the second branch respectively, or detects the gas pressure in the mixing chamber
  • the processor calculates the gas flow rate output by the high-frequency oscillation generating device based on the pressure detected by the pressure sensor and the gas flow rate detected by the flow sensor.
  • the flow sensor includes: a first flow sensor and a second flow sensor; the first flow sensor measures the flow rate of the first gas in the first branch; the second flow rate The sensor measures the second gas flow rate in the second branch.
  • the pressure sensor includes a first pressure sensor and a second pressure sensor
  • the first pressure sensor detects the first pressure in the first branch
  • the second pressure sensor detects the second pressure in the second branch
  • the processor calculates the high frequency oscillation based on the first pressure detected by the first pressure sensor and the second pressure detected by the second pressure sensor in combination with the first gas flow rate and the second gas flow rate The gas flow rate output by the generator.
  • the pressure sensor includes a third pressure sensor that detects the gas pressure in the mixing chamber
  • the processor calculates the gas flow rate output by the high-frequency oscillation generating device based on the third pressure detected by the third pressure sensor in combination with the first gas flow rate and the second gas flow rate.
  • the medical ventilation device further includes: a pressure generator connected to the high-frequency oscillation generating device.
  • the medical ventilation device further includes a fourth pressure sensor
  • the fourth pressure sensor is connected to the pressure generator, and measures the fourth pressure output by the pressure generator;
  • the processor is based on the pressure of the gas in the first branch and the second branch or the pressure of the gas in the mixing chamber, the fourth pressure detected by the fourth pressure sensor, and the first branch Calculating the flow rate of the gas output by the high-frequency oscillation generator.
  • the processor controls the first gas flow rate of the first branch and the second gas flow rate of the second branch based on the calculated gas flow rate output by the high-frequency oscillation generating device. Gas flow rate.
  • the first branch is further provided with a first flow controller; the second branch is further provided with a second flow controller.
  • the embodiment of the present invention provides a medical ventilation method, which is applied to the medical ventilation device provided in the embodiment of the present invention, and the method includes:
  • the pressure sensor detects the gas pressure in the first branch and the second branch respectively, or detects the gas pressure in the mixing chamber, and outputs the pressure;
  • a flow sensor detects the gas flow velocity in the first branch and the second branch respectively
  • the processor calculates the gas flow rate output by the high-frequency oscillation generating device based on the pressure detected by the pressure sensor and the gas flow rate detected by the flow sensor.
  • the flow sensor includes: a first flow sensor and a second flow sensor; the step of detecting the gas flow rate in the first branch and the second branch by the flow sensor respectively includes:
  • the first flow sensor detects the flow rate of the first gas in the first branch, and outputs the flow rate of the first gas
  • the second flow sensor detects the flow rate of the second gas in the second branch, and outputs the second gas flow rate.
  • the pressure sensor includes a first pressure sensor and a second pressure sensor; the pressure sensor detects the gas pressure in the first branch and the second branch respectively, and the step of outputting the pressure includes:
  • the first pressure sensor detects the gas pressure in the first branch, and outputs a first pressure
  • the second pressure sensor detects the gas pressure in the second branch and outputs a second pressure.
  • the step of the processor calculating the gas flow rate output by the high-frequency oscillation generating device based on the pressure detected by the pressure sensor and the gas flow rate detected by the flow sensor includes:
  • the processor calculates the gas flow rate output by the high-frequency oscillation generator based on the first pressure, the second pressure, and the first gas flow rate and the second gas flow rate.
  • the pressure sensor includes a third pressure sensor that detects the gas pressure in the mixing chamber; the processor calculates the high pressure based on the pressure detected by the pressure sensor and the gas flow rate detected by the flow sensor.
  • the steps of frequency oscillation generating equipment output gas flow rate include:
  • the processor calculates the gas flow rate output by the high-frequency oscillation generating device based on the third pressure detected by the third pressure sensor in combination with the first gas flow rate and the second gas flow rate.
  • the medical ventilation device further includes: a pressure generator connected to the high-frequency oscillation generating device.
  • the medical ventilation device further includes a fourth pressure sensor; the processor calculates the gas output by the high-frequency oscillation generator based on the pressure detected by the pressure sensor and the gas flow rate detected by the flow sensor
  • the flow rate steps include:
  • the fourth pressure sensor is connected to the pressure generator, and measures the fourth pressure output by the pressure generator;
  • the processor is based on the pressure of the gas in the first branch and the second branch or the pressure of the gas in the mixing chamber, the fourth pressure detected by the fourth pressure sensor, and the first branch and The flow rate of the gas in the second branch is calculated from the flow rate of the gas output by the high-frequency oscillation generating device.
  • the method further includes:
  • the processor controls the first gas flow rate of the first branch and the second gas flow rate of the second branch based on the calculated gas flow rate output by the high-frequency oscillation generating device.
  • the first branch is further provided with: a first flow controller; the second branch is further provided with: a second flow controller.
  • the embodiment of the present invention provides a ventilator, including:
  • a medical ventilation device provided by an embodiment of the present invention.
  • the embodiment of the present invention provides a computer-readable storage medium that stores executable ventilation instructions, which is used to cause the processor of the medical ventilation device to execute, to implement the medical ventilation method provided by the embodiment of the present invention.
  • the medical ventilation method adopts the above-mentioned medical ventilation device.
  • the medical ventilation device fully takes into account the pressure fluctuations in the oxygen mixing chamber, so that the gas flow rate output by the high-frequency oscillation generator can be calculated more accurately.
  • Fig. 1A is a first structural diagram of an exemplary medical ventilation device provided by an embodiment of the present invention
  • Figure 1B is a second structural diagram of an exemplary medical ventilation device provided by an embodiment of the present invention.
  • Figure 2 is a third structural diagram of an exemplary medical ventilation device provided by an embodiment of the present invention.
  • FIG. 3 is a fourth structural diagram of an exemplary medical ventilation device provided by an embodiment of the present invention.
  • FIG. 4 is a fifth structural diagram of an exemplary medical ventilation device provided by an embodiment of the present invention.
  • 5A is a sixth structural diagram of an exemplary medical ventilation device provided by an embodiment of the present invention.
  • 5B is a seventh structural diagram of an exemplary medical ventilation device provided by an embodiment of the present invention.
  • FIG. 6 is a first flowchart of a medical ventilation method provided by an embodiment of the present invention.
  • FIG. 7 is a second flowchart of a medical ventilation method provided by an embodiment of the present invention.
  • Figure 8 is a third flowchart of a medical ventilation method provided by an embodiment of the present invention.
  • Fig. 9 is a fourth flowchart of a medical ventilation method provided by an embodiment of the present invention.
  • the embodiment of the present invention provides a medical ventilation method, which is applied to a medical ventilation device. It should be noted that, in the embodiment of the present invention, the ventilation control method may be executed by a medical ventilation device or a ventilation device.
  • Fig. 1 is a schematic structural diagram of a medical ventilation device provided by an embodiment of the present invention.
  • the medical ventilation device 1 includes: a first gas input port 10 for receiving a first gas;
  • the first branch 12 connected to the first gas input port 10;
  • the second branch 13 connected to the second gas input port 11;
  • the mixing chamber 14 connected to the first branch 12 and the second branch 13;
  • a high-frequency oscillation generating device 15 connected to the mixing cavity 14;
  • a flow sensor 16 for detecting the gas flow velocity in the first branch 12 and the second branch 13 respectively;
  • a pressure sensor 17 that detects the gas pressure in the first branch 12 and the second branch 13 respectively, or detects the gas pressure in the mixing chamber 14;
  • the processor 18 calculates the gas flow rate output by the high-frequency oscillation generating device 15 based on the pressure detected by the pressure sensor 17 and the gas flow rate detected by the flow sensor 16.
  • the pressure sensors 17 arranged in the first branch 12 and the second branch 13, or the pressure sensors 17 arranged near the mixing chamber 14 or elsewhere to detect the gas pressure in the mixing chamber 14, can measure
  • the gas pressure of the first gas and the second gas before passing through the high-frequency oscillation generating device 15 is based on the pressure detected by the pressure sensor 17 and the gas flow rate detected by the flow sensor 16 provided in the first branch 12 and the second branch 13,
  • this medical ventilation method takes into account the influence of the pressure fluctuation generated in the oxygen mixing chamber on the gas flow rate, so that the gas flow rate output by the high-frequency oscillation generating device 15 can pass more accurately. Calculated.
  • the processor can be implemented by software, hardware, firmware, or a combination thereof, and can use circuits, single or multiple application specific integrated circuits (ASIC), single or multiple general integrated circuits, single or multiple micro-processing A device, a single or multiple programmable logic devices, or a combination of the foregoing circuits or devices, or other suitable circuits or devices, so that the processor can execute the corresponding steps of the medical ventilation method.
  • the high-frequency oscillation generating device 15 may be: a high-frequency valve, a vibration unit, a diaphragm or an on-off valve and other devices for generating high-frequency oscillation, which is not limited in the embodiment of the present invention.
  • the first gas and the second gas are air and oxygen respectively.
  • the first gas input port 10 is the oxygen input port
  • the second gas input port 11 is the air input port
  • the first gas input port 10 is an air input port
  • the second gas input port 11 is an oxygen input port.
  • the first gas and the second gas when input to the medical ventilation device, they can be input according to a fixed ratio.
  • the fixed ratio is determined by the requirements of the actual ventilation process and is not limited by the embodiment of the present invention.
  • the first gas input port 10 is connected to the first branch 12, and the second gas input port 11 is connected to the first branch 12.
  • the first branch 12 and the first branch 12 are ventilating branches
  • the first branch 12 is a passage for transmitting the first gas
  • the second branch 13 is a passage for transmitting the second gas.
  • the first branch 12 and the second branch 13 are both provided with a flow sensor 16, wherein the flow sensor 16 provided on the first branch 12 may be the first flow sensor 160; The flow sensor 16 provided on the road 13 may be the second flow sensor 161.
  • the first flow sensor 160 measures the first gas flow rate in the first branch 12; the second flow sensor 161 measures the second gas flow rate in the second branch 13.
  • the first branch 12 and the second branch 13 are also provided with flow controllers, the first branch 12 is provided with a first flow controller 110, and the first branch 12 is provided with a first flow controller 110.
  • a second flow controller 111 is provided on the second branch 13.
  • the flow controller may include an air proportional valve and an oxygen proportional valve.
  • the branch used for oxygen transmission uses an oxygen proportional valve, and the branch used for air transmission uses an air proportional valve.
  • the processor 18 can control the input flow rate by controlling the opening and closing of the proportional valve.
  • the flow controller can also be implemented with a high-frequency valve, a vibration unit, a diaphragm, or an on-off valve, which is not limited in the embodiment of the present invention.
  • the processor 18 may control the first branch 12 through the first flow controller 110 and the second flow controller 111 based on the calculated gas flow rate output by the high-frequency oscillation generating device 15
  • the first gas flow rate and the second gas flow rate output by the second branch 13 are used to control the output gas flow rate of the high-frequency oscillation generating device 15 to achieve the preset target.
  • the processor 18 can control the first flow controller 110 and the second flow controller 111 based on the gas flow rate output by the high frequency oscillation generating device 15 after obtaining the gas flow rate output by the high frequency oscillation generating device 15, In order to realize the control of the first gas flow rate output by the first branch 11 and the second gas flow rate output by the second branch 13.
  • the flow sensor 16 is connected to a flow controller, and the flow controller is arranged between the gas input port and the mixing chamber 14, and the flow sensor 16 can be arranged on the corresponding flow controller and gas input.
  • the ports can also be arranged between the flow controller and the mixing chamber 14, which is not limited in the embodiment of the present invention.
  • the first flow sensor 160 is connected to the oxygen proportional valve 110, and the second flow sensor 161 is connected to the air proportional valve 111.
  • the processor 18 is connected to the pressure sensor 17 and the flow sensor 16, and the flow controller. In order to simplify the figure, the processor is no longer shown in the illustrations in the following embodiments.
  • the pressure sensor 17 includes a first pressure sensor 170 and a second pressure sensor 171; the first pressure sensor 170 detects the first pressure in the first branch 12; The pressure sensor 171 detects the second pressure in the second branch 13.
  • first pressure sensor 170 and the second pressure sensor 171 on the first branch 12 and the second branch 13 are not limited in the embodiment of the present invention, and only need to be provided at the gas input port and the mixing chamber 14.
  • Figure 2 is only an exemplary setting.
  • the processor 18 may combine the first gas flow rate and the second gas flow rate, and the preset pressure and the second pressure based on the first pressure detected by the first pressure sensor 170 and the second pressure detected by the second pressure sensor 171. The relationship between the gas flow rate and the gas flow rate output by the high-frequency oscillation generator 15 is calculated.
  • the gas flow rate output by the high-frequency oscillation generator 15 can be calculated by the following formula (2), which is specifically:
  • Q1 is the first gas flow rate
  • Q2 is the second gas flow rate
  • Q3 is the total gas flow rate output by the high-frequency oscillation generator 15
  • PS1 is the first pressure
  • PS2 is the second pressure
  • P is the atmospheric pressure (1.013X10 ⁇ 5pa)
  • a1 and a2 are correction coefficients.
  • the correction coefficient is a coefficient for correcting the relationship between the preset pressure and the gas flow rate, which can be obtained through experiments or actual training.
  • the method for obtaining the correction coefficient is not limited in the embodiment of the present invention.
  • the gas flow rate and the gas flow rate are equivalent concepts.
  • the medical ventilation device calculates the gas flow rate output by the high-frequency oscillation generating device 15, it can be calculated by the pressure of the first branch 12 and the second branch 13, or by the pressure in the mixing chamber 14. In the calculation, no matter which method is adopted, the gas pressure fluctuation before the high-frequency oscillation generating device 15 is considered.
  • the pressure sensor 17 includes a third pressure sensor 172 that detects the gas pressure in the mixing chamber 14.
  • the processor 18 calculates the gas flow rate output by the high-frequency oscillation generating device 15 based on the third pressure detected by the third pressure sensor 172 in combination with the first gas flow rate and the second gas flow rate.
  • the third pressure sensor 172 may be arranged in the mixing chamber 14 or after the first flow controller 110 and the second flow controller 111 or before the high-frequency oscillation generating device 15.
  • the processor 18 in the medical ventilation device 1 can obtain the high frequency based on the third pressure detected by the third pressure sensor 172, combining the first gas flow rate and the second gas flow rate, and the relationship between the preset pressure and the gas flow rate.
  • Q1 is the first gas flow
  • Q2 is the second gas flow
  • Q3 is the total gas flow output by the high-frequency oscillation generator 15
  • PSO is the third pressure
  • P is the atmospheric pressure (1.013X10 ⁇ 5pa)
  • a is the correction coefficient.
  • the medical ventilation device 1 further includes: a pressure generator 19 connected to a high-frequency oscillation generating device 15.
  • the first gas output by the first branch 12 and the second gas output by the second branch 13 are mixed in the mixing chamber 14, and finally pass through the high frequency.
  • the frequency oscillation generating device 15 generates high frequency oscillation gas, which is output to the patient via the pressure generator 19.
  • the first gas is high-pressure oxygen and the second gas is high-pressure air
  • the first flow controller 110 uses an oxygen proportional valve
  • the second flow controller 111 uses an air proportional valve
  • the high-frequency oscillation generator 15 is a high-frequency
  • the first flow sensor 160 is an oxygen flow sensor
  • the second flow sensor 161 is a control gas flow sensor.
  • the working process of the gas circuit can be: high-pressure oxygen passes through the oxygen flow sensor and the oxygen proportional valve, and enters the mixing chamber 14 through the control flow of the oxygen proportional valve, and the high-pressure air passes through the air flow sensor and the air proportional valve.
  • the flow rate controlled by the air proportional valve enters the mixing chamber 14, high-pressure air and high-pressure oxygen are mixed in the mixing chamber 14, and then passed through the high-frequency proportional valve, transmitted to the pressure generator 19, and finally output to the patient end, the excess gas It is discharged from the atmospheric end of the pressure generator 19.
  • one end of the pressure generator 19 is connected to the high-frequency oscillation generating device 15, one end is connected to the patient interface, and the other end is connected to the atmosphere.
  • the medical ventilation device 1 further includes a fourth pressure sensor 173; the fourth pressure sensor 173 is connected to the pressure generator 19 to measure the fourth pressure output by the pressure generator 19.
  • the processor 18 is based on the pressure of the gas in the first branch 12 and the second branch 13 or the pressure of the gas in the mixing chamber 14, the fourth pressure detected by the fourth pressure sensor 173, and the first branch.
  • the flow rate of the gas in the circuit 12 and the second branch 13 is calculated from the gas flow rate output by the high-frequency oscillation generator 15.
  • the fourth pressure sensor 173 may be arranged between the high-frequency oscillation generator 15 and the pressure generator 19, or may be arranged on the pressure generator 19 for real-time detection, which is not limited in the embodiment of the present invention.
  • the detected pressure at the end of the pressure generator 19 can be used instead of the atmospheric pressure to calculate the gas flow rate output by the high-frequency oscillation generator 15 .
  • the processor 18 in the medical ventilation device 1 may be based on the first pressure, the second pressure, and the fourth pressure, combining the first gas flow rate and the second gas flow rate, and the preset pressure and gas flow rate.
  • the gas flow rate output by the high-frequency oscillation generator 15 is obtained.
  • the gas flow rate of the high-frequency oscillation generating device 15 can be calculated by formula (4), as follows:
  • PS3 is the fourth pressure.
  • the medical ventilation device can measure the pressure of the first branch 12 and the second branch 13, and based on the above pressure, and the detected gas flow rate in the first branch 12 and the second branch 13, based on The relationship between the pressure change and the inverse ratio of the volume length can be used to calculate the gas flow rate output by the high-frequency oscillation generator 15, taking into account the pressure fluctuations that occur when the first branch 12 and the second branch 13 reach the mixing chamber.
  • the gas flow rate output by the high-frequency oscillation generating device 15 can be accurately calculated, thereby improving the measurement accuracy of the gas flow rate.
  • the processor 18 in the medical ventilation device 1 may combine the first gas flow rate and the second gas flow rate, and the relationship between the preset pressure and the gas flow rate based on the third pressure and the fourth pressure, Calculate the gas flow rate output by the high-frequency oscillation generator 15.
  • the gas flow rate output by the high-frequency oscillation generating device 15 can be calculated by formula (5), as follows:
  • the medical ventilation device can measure the third pressure of the mixing chamber 14 based on the third pressure, and the detected gas flow rate in the first branch 12 and the second branch 13, based on the pressure change and volume length.
  • the gas flow rate output by the high-frequency oscillation generating device 15 can be calculated, and the pressure fluctuations generated by the oxygen mixing chamber are fully considered, so that the gas flow rate output by the high-frequency oscillation generating device 15 can be accurately calculated, thereby improving Measuring accuracy of gas flow rate.
  • FIG. 6 is a schematic flowchart of a medical ventilation method applied to a medical ventilation device according to an embodiment of the present invention. As shown in Figure 6, the medical ventilation method mainly includes the following steps:
  • the pressure sensor detects the gas pressure in the first branch and the second branch respectively, or detects the gas pressure in the mixing chamber, and outputs the pressure.
  • the flow sensor detects the gas flow rate in the first branch and the second branch respectively.
  • the processor calculates the gas flow rate output by the high-frequency oscillation generating device based on the pressure detected by the pressure sensor and the gas flow rate detected by the flow sensor.
  • the medical ventilation method provided in the embodiment of the present invention is applied in the high-frequency ventilation mode, and can also be applied in the CPAP and BiLEVEL ventilation modes, which is not limited by the embodiment of the present invention.
  • the following takes the high-frequency ventilation mode as an example.
  • the medical ventilation device is provided with a second gas input port that receives the second gas; a first branch connected to the first gas input port; a second branch connected to the second gas input port;
  • the mixing chamber connected to the first branch and the second branch; the high-frequency oscillation generator connected to the mixing chamber; the flow sensor that detects the gas flow velocity in the first branch and the second branch respectively; the first branch is detected separately And the gas pressure in the second branch, or a pressure sensor that detects the gas pressure in the mixing chamber; and, the processor.
  • the first gas and the second gas are air and oxygen respectively.
  • the first gas input port 10 is the oxygen input port
  • the second gas input port is the air input port
  • the first gas input port is an air input port
  • the second gas input port is an oxygen input port.
  • the first gas and the second gas when input to the medical ventilation device, they can be input according to a fixed ratio.
  • the fixed ratio is determined by the requirements of the actual ventilation process and is not limited by the embodiment of the present invention.
  • the first gas input port is connected to the first branch
  • the second gas input port is connected to the first branch.
  • the first branch and the first branch are ventilation branches
  • the first branch is a passage for transmitting the first gas
  • the second branch is a passage for transmitting the second gas.
  • the high-frequency oscillation generating device may be: a high-frequency valve, a vibration unit, a diaphragm or an on-off valve and other devices used to generate high-frequency oscillation, which is not limited in the embodiment of the present invention.
  • the pressure sensor detects the gas pressure in the first branch and the second branch respectively, or detects the gas pressure in the mixing chamber, and outputs the pressure;
  • the flow sensor detects the gas pressure in the first branch and the second branch respectively Gas flow rate.
  • the processor can calculate the gas flow rate output by the high-frequency oscillation generator based on the pressure detected by the pressure sensor and the gas flow rate detected by the flow sensor.
  • the pressure sensors arranged in the first branch and the second branch can measure the pressure of the first gas and the second gas
  • the gas flow rate output by the high-frequency oscillation generating device is calculated based on the pressure detected by the pressure sensor and the gas flow rate detected by the flow sensors arranged in the first branch and the second branch.
  • the medical ventilation method takes into account the influence of pressure fluctuations generated in the oxygen mixing chamber on the gas flow rate, so that the gas flow rate output by the high-frequency oscillation generator can be more accurately calculated.
  • the flow sensor includes: a first flow sensor and a second flow sensor; the pressure sensor includes a first pressure sensor and a second pressure sensor; thus, as shown in FIG. 7, the embodiment of the present invention also provides A method of medical ventilation including:
  • the first pressure sensor detects the gas pressure in the first branch, and outputs the first pressure.
  • the second pressure sensor detects the gas pressure in the second branch, and outputs the second pressure.
  • the first flow sensor detects the flow rate of the first gas in the first branch, and outputs the first gas flow rate.
  • the second flow sensor detects the flow rate of the second gas in the second branch, and outputs the second gas flow rate.
  • the processor calculates the gas flow rate output by the high-frequency oscillation generator based on the first pressure, the second pressure, and the first gas flow rate and the second gas flow rate.
  • the location of the first pressure sensor and the second pressure sensor on the first branch and the second branch is not limited in the embodiment of the present invention, and only needs to be between other gas input ports and the mixing chamber.
  • flow sensors are provided on both the first branch and the second branch, wherein the flow sensor provided on the first branch may be the first flow sensor; the flow sensor provided on the second branch may be the first 2.
  • Flow sensor The first flow sensor measures the first gas flow rate in the first branch; the second flow sensor measures the second gas flow rate in the second branch.
  • the processor in the medical ventilation device can calculate the high-frequency oscillation generating equipment based on the first pressure and the second pressure, combining the first gas flow rate and the second gas flow rate, and the relationship between the preset pressure and the gas flow rate.
  • the output gas flow rate can be calculated based on the first pressure and the second pressure, combining the first gas flow rate and the second gas flow rate, and the relationship between the preset pressure and the gas flow rate.
  • p is the atmospheric pressure
  • v is the gas volume
  • n is the amount of substance
  • R is the ideal gas constant
  • T is the temperature.
  • the gas flow rate output by the high-frequency oscillation generating device can be calculated by the following formula (2), specifically:
  • Q1 is the first gas flow
  • Q2 is the second gas flow
  • Q3 is the total gas flow output by the high-frequency oscillation generator
  • PS1 is the first pressure
  • PS2 is the second pressure
  • P is the atmospheric pressure (1.013X10 ⁇ 5pa )
  • a1 and a2 are correction coefficients.
  • the correction coefficient is a coefficient for correcting the relationship between the preset pressure and the gas flow rate. It can be obtained through experiments or actual training.
  • the method for obtaining the correction coefficient is not limited in the embodiment of the present invention.
  • the gas flow rate and the gas flow rate are equivalent concepts.
  • this method fully takes into account the pressure fluctuations that occur when the first branch and the second branch reach the mixed oxygen chamber, so that the gas flow rate output by the high-frequency oscillation generator can be accurately calculated, thereby improving Measuring accuracy of gas flow rate.
  • the flow sensor includes: a first flow sensor and a second flow sensor; the pressure sensor includes a third pressure sensor that detects the gas pressure in the mixing chamber; thus, as shown in FIG. 8, the embodiment of the present invention
  • a medical ventilation method is also provided, including:
  • the third pressure sensor detects the gas pressure in the mixing chamber and outputs a third pressure.
  • the first flow sensor detects the flow rate of the first gas in the first branch, and outputs the first gas flow rate.
  • the second flow sensor detects the flow rate of the second gas in the second branch, and outputs the second gas flow rate.
  • S304 Based on the third pressure detected by the third pressure sensor, the processor calculates the gas flow rate output by the high-frequency oscillation generator in combination with the first gas flow rate and the second gas flow rate.
  • the third pressure sensor can be arranged between the mixing cavity and the high-frequency oscillation generating device.
  • the processor in the medical ventilation device can obtain a high-frequency oscillation generating device based on the third pressure detected by the third pressure sensor, combining the first gas flow rate and the second gas flow rate, and the relationship between the preset pressure and the gas flow rate.
  • the output gas flow rate Specifically, the gas flow rate output by the high-frequency oscillation generator can be calculated by the following formula (3), as follows:
  • Q1 is the first gas flow
  • Q2 is the second gas flow
  • Q3 is the total gas flow output by the high-frequency oscillation generator
  • PS0 is the third pressure
  • P is the atmospheric pressure (1.013X10 ⁇ 5pa)
  • a is the correction coefficient .
  • the medical ventilation device can measure the third pressure of the mixing chamber based on the third pressure, and the detected gas flow rate in the first branch and the second branch, based on the inverse relationship between the pressure change and the volume length ,
  • the gas flow rate output by the high-frequency oscillation generator can be calculated, taking into account the pressure fluctuations in the mixed oxygen chamber, so that the gas flow rate output by the high-frequency oscillation generator can be accurately calculated, thereby improving the measurement of the measured gas flow rate Accuracy.
  • the medical ventilation device further includes: a pressure generator connected to the high-frequency oscillation generating device.
  • the medical ventilation device further includes a fourth pressure sensor; the fourth pressure sensor is connected to the pressure generator and measures the fourth pressure output by the pressure generator; as shown in FIG. 9, an embodiment of the present invention also provides a medical ventilation method, including :
  • the first flow sensor detects the flow rate of the first gas in the first branch, and outputs the first gas flow rate.
  • the second flow sensor detects the flow rate of the second gas in the second branch, and outputs the second gas flow rate.
  • the fourth pressure sensor measures the pressure generator and outputs the fourth pressure.
  • the first pressure sensor detects the gas pressure in the first branch, and outputs the first pressure.
  • the second pressure sensor detects the gas pressure in the second branch and outputs the second pressure.
  • the processor is based on the first pressure and the second pressure of the gas in the first branch and the second branch, the fourth pressure detected by the fourth pressure sensor, and the flow rate of the gas in the first branch and the second branch. , Calculate the gas flow rate output by the high-frequency oscillation generator.
  • the third pressure sensor detects the gas pressure in the mixing chamber, and outputs the third pressure.
  • the processor calculates the gas flow rate output by the high-frequency oscillation generating device based on the third pressure and the fourth pressure detected by the fourth pressure sensor, and the flow rate of the gas in the first branch and the second branch.
  • the device in the high-frequency ventilation mode, during high-frequency air supply, the first gas output by the first branch and the second gas output by the second branch are mixed in the mixing chamber, and finally generated by high-frequency oscillation
  • the device generates high-frequency oscillating gas, which is output to the patient via a pressure generator.
  • the first gas is high-pressure oxygen
  • the second gas is high-pressure air
  • the first flow controller uses an oxygen proportional valve
  • the second flow controller uses an air proportional valve
  • the high-frequency oscillation generator is a high-frequency proportional valve.
  • the first flow sensor is an oxygen flow sensor
  • the second flow sensor is a control gas flow sensor.
  • the working process of the gas circuit can be: high-pressure oxygen passes through the oxygen flow sensor and the oxygen proportional valve, and enters the mixing chamber through the control flow of the oxygen proportional valve, and high-pressure air passes through the air flow sensor and the air proportional valve.
  • the control flow of the air proportional valve enters the mixing chamber, and the high-pressure air and high-pressure oxygen are mixed in the mixing chamber, and then passed through the high-frequency proportional valve, transmitted to the pressure generator, and finally output to the patient end.
  • the excess gas is generated from the pressure
  • the air side of the device is discharged.
  • one end of the pressure generator is connected to the high-frequency oscillation generator, one end is connected to the patient interface, and the other end is connected to the atmosphere.
  • the fourth pressure sensor may be disposed between the high-frequency oscillation generating device and the pressure generator, or may be disposed on the pressure generator for real-time detection, which is not limited in the embodiment of the present invention.
  • the pressure detected at the end of the pressure generator can be used instead of the atmospheric pressure to calculate the gas flow output by the high-frequency oscillation generating device.
  • the processor in the medical ventilation device can obtain high frequency based on the first pressure, second pressure, and fourth pressure, combining the first gas flow rate and the second gas flow rate, and the relationship between the preset pressure and the gas flow rate.
  • the flow rate of gas output by the oscillating device can be calculated by formula (4), as follows:
  • PS3 is the fourth pressure.
  • the medical ventilation device can measure the pressure of the first branch and the second branch based on the above pressure, and the detected gas flow rate in the first branch and the second branch, based on the pressure change and volume
  • the relationship between the length and the inverse ratio can calculate the gas flow rate output by the high-frequency oscillation generator, taking into account the pressure fluctuations generated from the first branch and the second branch to the mixed oxygen chamber, which makes the high-frequency oscillation generator output
  • the gas flow rate can be accurately calculated, thereby improving the measurement accuracy of measuring the gas flow rate.
  • the processor in the medical ventilation device can calculate the output of the high-frequency oscillation generator based on the third pressure and the fourth pressure, combining the first gas flow rate and the second gas flow rate, and the relationship between the preset pressure and the gas flow rate The gas flow rate.
  • the gas flow rate output by the high-frequency oscillation generator can be calculated by formula (5), as follows:
  • the medical ventilation device can measure the third pressure of the mixing chamber based on the third pressure, and the detected gas flow rate in the first branch and the second branch, based on the inverse relationship between the pressure change and the volume length ,
  • the gas flow rate output by the high-frequency oscillation generator can be calculated, taking into account the pressure fluctuations in the mixed oxygen chamber, so that the gas flow rate output by the high-frequency oscillation generator can be accurately calculated, thereby improving the measurement of the measured gas flow rate Accuracy.
  • S401-406 is a medical ventilation method that uses a fourth pressure sensor to measure the gas flow rate output by a high-frequency oscillation generating device
  • S401-403 and S407-S408 are another method that uses a fourth pressure sensor to measure high frequency.
  • a medical ventilation method that oscillates the gas flow rate output by the device. The specific method used to measure the gas flow rate output by the high-frequency oscillation generating device is determined by the setting mode of the actual pressure sensor, which is not limited in the embodiment of the present invention.
  • the first branch is further provided with: a first flow controller; the second branch is further provided with: a second flow controller.
  • the processor controls the first gas flow rate and the second gas flow rate of the first branch based on the calculated gas flow rate output by the high-frequency oscillation generating device. The second gas flow rate output by the branch.
  • flow sensors are provided on both the first branch and the second branch, wherein the flow sensor provided on the first branch may be the first flow sensor; the flow sensor provided on the second branch may be the first 2.
  • Flow sensor The first flow sensor measures the first gas flow rate in the first branch; the second flow sensor measures the second gas flow rate in the second branch.
  • the first branch and the second branch are further provided with a flow controller, the first branch is provided with a first flow controller, and the second branch is provided with a second flow controller.
  • the flow controller may include an air proportional valve and an oxygen proportional valve.
  • the branch used for oxygen transmission uses an oxygen proportional valve, and the branch used for air transmission uses an air proportional valve.
  • the processor can control the input flow rate by controlling the opening and closing of the proportional valve.
  • the flow controller can also be implemented with a high-frequency valve, a vibration unit, a diaphragm, or an on-off valve, which is not limited in the embodiment of the present invention.
  • the processor may control the first gas flow rate of the first branch and the second gas flow rate of the second branch based on the calculated gas flow rate output by the high-frequency oscillation generating device.
  • the processor obtains the gas flow rate output by the high-frequency oscillation generating device, based on the gas flow rate output by the high-frequency oscillation generating device, it can control the first flow controller and the second flow controller in turn to achieve the first Control of the first gas flow rate output by the branch and the second gas flow rate output by the second branch.
  • the flow sensor is connected to the flow controller, the flow controller is arranged between the gas input port and the mixing chamber, and the flow sensor can be arranged between the corresponding flow controller and the gas input port , It can also be set in the flow controller and the mixing chamber, which is not limited in the embodiment of the present invention.
  • the first flow sensor is connected to the oxygen proportional valve
  • the second flow sensor is connected to the air proportional valve
  • the medical ventilation device can be based on other pressures in the first branch or the second branch to characterize the pressure fluctuations on the mixing chamber side of the high-frequency oscillation generating device before the oscillation, or directly through measurement
  • the gas pressure of the mixing chamber is used to measure the flow rate of the high-frequency gas oscillated by the high-frequency oscillation generator, thereby improving the accuracy of the measurement.
  • the first branch and the second branch can be controlled based on the measured flow rate of the high-frequency gas.
  • the switch of the flow controller of the branch makes the ratio or flow of the first gas and the second gas change to meet the demand of high-frequency ventilation.
  • the embodiment of the present invention provides a ventilator including: the medical ventilation device with the above structure.
  • the embodiment of the present invention also provides a computer-readable storage medium that stores executable ventilation instructions for causing the processor of the medical ventilation device to execute the ventilation method provided in the embodiments of the present invention.
  • each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be realized in the form of hardware or software function module.
  • the integrated unit is implemented in the form of a software function module and is not sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this embodiment is essentially or It is said that the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium and includes several instructions to enable a computer device (which can A personal computer, server, or network device, etc.) or a processor (processor) executes all or part of the steps of the method described in this embodiment.
  • the aforementioned storage media include: magnetic random access memory (FRAM, ferromagnetic random access memory), read-only memory (ROM, Read Only Memory), programmable read-only memory (PROM, Programmable Read-Only Memory), erasable Programmable Read-Only Memory (EPROM, Erasable Programmable Read-Only Memory), Electrically Erasable Programmable Read-Only Memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), Flash Memory, Magnetic Surface Memory, Optical Disk
  • FRAM magnetic random access memory
  • ROM read-only memory
  • PROM programmable Read-Only Memory
  • EPROM Erasable Programmable Read-Only Memory
  • EEPROM Electrically Erasable Programmable Read-Only Memory
  • Flash Memory Magnetic Surface Memory
  • Optical Disk Various media that can store program codes, such as CD-ROM (Compact Disc Read-Only Memory), etc., are not limited in the embodiments of the present disclosure.
  • the embodiments of the present invention provide a medical ventilation method and device, a ventilator, and a computer-readable storage medium.
  • the medical ventilation device can be installed in the first branch and the second branch.
  • the pressure sensor obtain the pressure of the first gas and the second gas, or obtain the pressure of the mixed gas of the first gas and the second gas in the mixing chamber in the pressure sensor set near the mixing chamber, and can also detect
  • the gas flow rate in the first branch and the second branch is calculated based on the relationship between the pressure change and the inverse ratio of the volume length to the gas flow rate output by the high-frequency oscillation generator.
  • This processing fully takes into account the pressure fluctuations in the oxygen mixing chamber , So that the gas flow rate output by the high-frequency oscillation generator can be calculated more accurately, and the measurement accuracy of measuring the gas flow rate is improved.

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Abstract

Provided are a medical ventilation method and device, a ventilator, and a computer readable medium. The medical ventilation device comprises: a first gas input port (10) for receiving first gas, a second gas input port (11) for receiving second gas, a first branch (12) connected to the first gas input port (10), a second branch (13) connected to the second gas input port (11), a mixing chamber (14) connected to the first branch (12) and the second branch (13), a high-frequency oscillation generator (15) connected to the mixing chamber (14), a flow sensor (16) for respectively detecting the gas flow rate in the first branch (12) and the second branch (13), a pressure sensor (17) for respectively detecting the gas pressure in the first branch (12) and the second branch (13), or detecting the gas pressure in the mixing chamber, and a processor (18) for calculating the gas flow rate output by the high-frequency oscillation generator (15) according to the pressure detected by the pressure sensor (17) and the gas flow rate detected by the flow sensor (16).

Description

医用通气方法及装置、呼吸机、计算机可读存储介质Medical ventilation method and device, ventilator, and computer readable storage medium 技术领域Technical field
本发明实施例涉及医疗器械技术领域，尤其涉及一种医用通气方法及装置、呼吸机、计算机可读存储介质。The embodiments of the present invention relate to the technical field of medical devices, and in particular, to a medical ventilation method and device, a ventilator, and a computer-readable storage medium.
背景技术Background technique
高频通气(HFV，High Frequency Ventilation)是一种维持在较高通气频率，较低潮气量和较低气道压力下的一种通气模式。在使用通气设备进行呼吸的过程中，由于在整个呼气周期，都处于安全窗内通气，肺泡不会大范围的张、缩，因此，可以避免肺损伤，维持肺泡稳定性。尤其在新生儿的通气中得到广泛的应用。High Frequency Ventilation (HFV) is a ventilation mode that maintains a higher ventilation frequency, lower tidal volume, and lower airway pressure. In the process of using a ventilation device to breathe, because the ventilation is within the safety window during the entire expiration cycle, the alveoli will not expand or contract in a wide range, so lung damage can be avoided and the stability of the alveoli can be maintained. Especially it is widely used in the ventilation of newborns.
目前，在高频通气过程中，空气和氧气传送到一个混合腔体内，通过高频阀的控制产生出高频流量通气，在混氧腔体内会产生压力波动，由于压力和气体体积存在变化关系，因此，上述压力波动会影响混合腔内的总流量的测量，总流量就会随着压力的增大或者减小发生波动，导致测量的流量存在偏差，影响测量精度。At present, in the process of high-frequency ventilation, air and oxygen are transferred into a mixing chamber, and high-frequency flow ventilation is generated through the control of the high-frequency valve. Pressure fluctuations are generated in the oxygen mixing chamber, due to the relationship between pressure and gas volume. Therefore, the aforementioned pressure fluctuations will affect the measurement of the total flow in the mixing chamber, and the total flow will fluctuate as the pressure increases or decreases, resulting in deviations in the measured flow and affecting the measurement accuracy.
发明内容Summary of the invention
本发明实施例期望提供一种医用通气方法及装置、呼吸机、计算机可读存储介质，能够提高流量的测量精度。The embodiments of the present invention expect to provide a medical ventilation method and device, a ventilator, and a computer-readable storage medium, which can improve the accuracy of flow measurement.
本发明实施例的技术方案可以如下实现：The technical solutions of the embodiments of the present invention can be implemented as follows:
本发明实施例提供了一种医用通气装置，所述装置包括：The embodiment of the present invention provides a medical ventilation device, the device includes:
接收第一气体的第一气体输入口；A first gas input port for receiving the first gas;
接收第二气体的第二气体输入口；A second gas input port for receiving the second gas;
与所述第一气体输入口连接的第一支路；A first branch connected to the first gas input port;
与所述第二气体输入口连接的第二支路；A second branch connected to the second gas input port;
与所述第一支路和所述第二支路连接的混合腔；A mixing chamber connected to the first branch and the second branch;
与所述混合腔连接的高频震荡发生设备；A high-frequency oscillation generating device connected to the mixing cavity;
分别检测所述第一支路和所述第二支路中气体流速的流量传感器；A flow sensor for detecting the gas flow velocity in the first branch and the second branch respectively;
分别检测所述第一支路和所述第二支路中气体压力，或者检测所述混合腔中气体压力的压力传感器；以及，A pressure sensor that detects the gas pressure in the first branch and the second branch respectively, or detects the gas pressure in the mixing chamber; and,
处理器，处理器基于所述压力传感器检测的压力和所述流量传感器检测的气体流速，计算所述高频震荡发生设备输出的气体流速。The processor calculates the gas flow rate output by the high-frequency oscillation generating device based on the pressure detected by the pressure sensor and the gas flow rate detected by the flow sensor.
在上述医用通气装置中，所述流量传感器包括：第一流量传感器和第二流量传感器；所述第一流量传感器测量所述第一支路中的所述第一气体流速；所述第二流量传感器测量所述第二支路中的所述第二气体流速。In the above medical ventilation device, the flow sensor includes: a first flow sensor and a second flow sensor; the first flow sensor measures the flow rate of the first gas in the first branch; the second flow rate The sensor measures the second gas flow rate in the second branch.
在上述医用通气装置中，所述压力传感器包括第一压力传感器和第二压力传感器；In the above medical ventilation device, the pressure sensor includes a first pressure sensor and a second pressure sensor;
所述第一压力传感器检测所述第一支路中的第一压力；The first pressure sensor detects the first pressure in the first branch;
所述第二压力传感器检测所述第二支路中的第二压力；The second pressure sensor detects the second pressure in the second branch;
所述处理器基于所述第一压力传感器检测的第一压力和所述第二压力传感器检测的第二压力，结合所述第一气体流速和所述第二气体流速，计算所述高频震荡发生设备输出的气体流速。The processor calculates the high frequency oscillation based on the first pressure detected by the first pressure sensor and the second pressure detected by the second pressure sensor in combination with the first gas flow rate and the second gas flow rate The gas flow rate output by the generator.
在上述医用通气装置中，所述压力传感器包括检测所述混合腔中气体压力的第三压力传感器；In the above-mentioned medical ventilation device, the pressure sensor includes a third pressure sensor that detects the gas pressure in the mixing chamber;
所述处理器基于所述第三压力传感器检测的第三压力，结合所述第一气体流速和所述第二气体流速，计算所述高频震荡发生设备输出的气体流速。The processor calculates the gas flow rate output by the high-frequency oscillation generating device based on the third pressure detected by the third pressure sensor in combination with the first gas flow rate and the second gas flow rate.
在上述医用通气装置中，所述医用通气装置还包括：与所述高频震荡发生设备连接的压力发生器。In the above medical ventilation device, the medical ventilation device further includes: a pressure generator connected to the high-frequency oscillation generating device.
在上述医用通气装置中，所述医用通气装置还包括第四压力传感器；In the above medical ventilation device, the medical ventilation device further includes a fourth pressure sensor;
所述第四压力传感器与所述压力发生器连接，测量所述压力发生器输出的第四压力；The fourth pressure sensor is connected to the pressure generator, and measures the fourth pressure output by the pressure generator;
所述处理器基于所述第一支路和第二支路中气体的压力或所述混合腔中气体的压力，所述第四压力传感器检测的所述第四压力，以及所述第一支路和第二支路中气体的流速，计算所述高频震荡发生设备输出的气体流速。The processor is based on the pressure of the gas in the first branch and the second branch or the pressure of the gas in the mixing chamber, the fourth pressure detected by the fourth pressure sensor, and the first branch Calculating the flow rate of the gas output by the high-frequency oscillation generator.
在上述医用通气装置中，所述处理器基于计算得到的所述高频震荡发生设备输出的气体流速，控制所述第一支路的第一气体流速和所述第二支路输出的第二气体流速。In the above-mentioned medical ventilation device, the processor controls the first gas flow rate of the first branch and the second gas flow rate of the second branch based on the calculated gas flow rate output by the high-frequency oscillation generating device. Gas flow rate.
在上述医用通气装置中，所述第一支路还设有：第一流量控制器；所述第二支路还设有：第二流量控制器。In the above medical ventilation device, the first branch is further provided with a first flow controller; the second branch is further provided with a second flow controller.
本发明实施例提供了一种医用通气方法，应用于本发明实施例提供的医用通气装置中，所述方法包括：The embodiment of the present invention provides a medical ventilation method, which is applied to the medical ventilation device provided in the embodiment of the present invention, and the method includes:
压力传感器分别检测第一支路和第二支路中气体压力，或者检测混合腔中气体压力，输出压力；The pressure sensor detects the gas pressure in the first branch and the second branch respectively, or detects the gas pressure in the mixing chamber, and outputs the pressure;
流量传感器分别检测所述第一支路和所述第二支路中气体流速；A flow sensor detects the gas flow velocity in the first branch and the second branch respectively;
处理器基于所述压力传感器检测的压力和所述流量传感器检测的气体流速，计算所述高频震荡发生设备输出的气体流速。The processor calculates the gas flow rate output by the high-frequency oscillation generating device based on the pressure detected by the pressure sensor and the gas flow rate detected by the flow sensor.
在上述方法中，所述流量传感器包括：第一流量传感器和第二流量传感器；所述流量传感器分别检测所述第一支路和所述第二支路中气体流速的步骤包括：In the above method, the flow sensor includes: a first flow sensor and a second flow sensor; the step of detecting the gas flow rate in the first branch and the second branch by the flow sensor respectively includes:
所述第一流量传感器检测第一支路的第一气体的流速，输出第一气体流速；The first flow sensor detects the flow rate of the first gas in the first branch, and outputs the flow rate of the first gas;
所述第二流量传感器检测第二支路的第二气体的流速，输出第二气体流速。The second flow sensor detects the flow rate of the second gas in the second branch, and outputs the second gas flow rate.
在上述方法中，所述压力传感器包括第一压力传感器和第二压力传感器；所述压力传感器分别检测第一支路和第二支路中气体压力，输出压力的步骤包括：In the above method, the pressure sensor includes a first pressure sensor and a second pressure sensor; the pressure sensor detects the gas pressure in the first branch and the second branch respectively, and the step of outputting the pressure includes:
所述第一压力传感器检测所述第一支路中的气体压力，输出第一压力；The first pressure sensor detects the gas pressure in the first branch, and outputs a first pressure;
所述第二压力传感器检测所述第二支路中的气体压力，输出第二压力。The second pressure sensor detects the gas pressure in the second branch and outputs a second pressure.
在上述方法中，所述处理器基于所述压力传感器检测的压力和所述流量传感器检测的气体流速，计算所述高频震荡发生设备输出的气体流速的步骤包括：In the above method, the step of the processor calculating the gas flow rate output by the high-frequency oscillation generating device based on the pressure detected by the pressure sensor and the gas flow rate detected by the flow sensor includes:
所述处理器基于所述第一压力，所述第二压力，结合所述第一气体流速和所述第二气体流速，计算所述高频震荡发生设备输出的气体流速。The processor calculates the gas flow rate output by the high-frequency oscillation generator based on the first pressure, the second pressure, and the first gas flow rate and the second gas flow rate.
在上述方法中，所述压力传感器包括检测所述混合腔中气体压力的第三压力传感器；所述处理器基于所述压力传感器检测的压力和所述流量传感器检测的气体流速，计算所述高频震荡发生设备输出的气体流速的步骤包括：In the above method, the pressure sensor includes a third pressure sensor that detects the gas pressure in the mixing chamber; the processor calculates the high pressure based on the pressure detected by the pressure sensor and the gas flow rate detected by the flow sensor. The steps of frequency oscillation generating equipment output gas flow rate include:
所述处理器基于所述第三压力传感器检测的第三压力，结合所述第一气体流速和所述第二气体流速，计算所述高频震荡发生设备输出的气体流速。The processor calculates the gas flow rate output by the high-frequency oscillation generating device based on the third pressure detected by the third pressure sensor in combination with the first gas flow rate and the second gas flow rate.
在上述方法中，所述医用通气装置还包括：与所述高频震荡发生设备连接的压力发生器。In the above method, the medical ventilation device further includes: a pressure generator connected to the high-frequency oscillation generating device.
在上述方法中，所述医用通气装置还包括第四压力传感器；所述处理器基于所述压力传感器检测的压力和所述流量传感器检测的气体流速，计算所述高频震荡发生设备输出的气体流速的步骤包括：In the above method, the medical ventilation device further includes a fourth pressure sensor; the processor calculates the gas output by the high-frequency oscillation generator based on the pressure detected by the pressure sensor and the gas flow rate detected by the flow sensor The flow rate steps include:
所述第四压力传感器与所述压力发生器连接，测量所述压力发生器输出的第四压力；The fourth pressure sensor is connected to the pressure generator, and measures the fourth pressure output by the pressure generator;
所述处理器基于所述第一支路和第二支路中气体的压力或所述混合腔中气体的压力，所述第四压力传感器检测的第四压力，以及所述第一支路和所述第二支路中的气体的流速，计算所述高频震荡发生设备输出的气体流速。The processor is based on the pressure of the gas in the first branch and the second branch or the pressure of the gas in the mixing chamber, the fourth pressure detected by the fourth pressure sensor, and the first branch and The flow rate of the gas in the second branch is calculated from the flow rate of the gas output by the high-frequency oscillation generating device.
在上述方法中，所述方法还包括：In the above method, the method further includes:
所述处理器基于计算得到的所述高频震荡发生设备输出的气体流速，控制所述第一支路的第一气体流速和所述第二支路输出的第二气体流速。The processor controls the first gas flow rate of the first branch and the second gas flow rate of the second branch based on the calculated gas flow rate output by the high-frequency oscillation generating device.
在上述方法中，所述第一支路还设有：第一流量控制器；所述第二支路还设有：第二流量控制器。In the above method, the first branch is further provided with: a first flow controller; the second branch is further provided with: a second flow controller.
本发明实施例提供了一种呼吸机，包括：The embodiment of the present invention provides a ventilator, including:
本发明实施例提供的医用通气装置。A medical ventilation device provided by an embodiment of the present invention.
本发明实施例提供了一种计算机可读存储介质，存储有可执行通气指令，用于引起医用通气装置的处理器执行时，实现本发明实施例提供的医用通气方法。The embodiment of the present invention provides a computer-readable storage medium that stores executable ventilation instructions, which is used to cause the processor of the medical ventilation device to execute, to implement the medical ventilation method provided by the embodiment of the present invention.
医用通气方法采用上述医用通气装置医用通气方法医用通气装置，充分考虑到了混氧腔体内会产生压力波动，使得高频震荡发生设备输出的气体流速可以通过更准确的计算得到。The medical ventilation method adopts the above-mentioned medical ventilation device. The medical ventilation device fully takes into account the pressure fluctuations in the oxygen mixing chamber, so that the gas flow rate output by the high-frequency oscillation generator can be calculated more accurately.
附图说明Description of the drawings
图1A为本发明实施例提供的示例性的一种医用通气装置的结构图一；Fig. 1A is a first structural diagram of an exemplary medical ventilation device provided by an embodiment of the present invention;
图1B为本发明实施例提供的示例性的一种医用通气装置的结构图二Figure 1B is a second structural diagram of an exemplary medical ventilation device provided by an embodiment of the present invention
图2为本发明实施例提供的示例性的一种医用通气装置的结构图三；Figure 2 is a third structural diagram of an exemplary medical ventilation device provided by an embodiment of the present invention;
图3为本发明实施例提供的示例性的一种医用通气装置的结构图四；3 is a fourth structural diagram of an exemplary medical ventilation device provided by an embodiment of the present invention;
图4为本发明实施例提供的示例性的一种医用通气装置的结构图五；4 is a fifth structural diagram of an exemplary medical ventilation device provided by an embodiment of the present invention;
图5A为本发明实施例提供的示例性的一种医用通气装置的结构图六；5A is a sixth structural diagram of an exemplary medical ventilation device provided by an embodiment of the present invention;
图5B为本发明实施例提供的示例性的一种医用通气装置的结构图七；5B is a seventh structural diagram of an exemplary medical ventilation device provided by an embodiment of the present invention;
图6为本发明实施例提供的一种医用通气方法的流程图一；FIG. 6 is a first flowchart of a medical ventilation method provided by an embodiment of the present invention;
图7为本发明实施例提供的一种医用通气方法的流程图二；FIG. 7 is a second flowchart of a medical ventilation method provided by an embodiment of the present invention;
图8为本发明实施例提供的一种医用通气方法的流程图三；Figure 8 is a third flowchart of a medical ventilation method provided by an embodiment of the present invention;
图9为本发明实施例提供的一种医用通气方法的流程图四。Fig. 9 is a fourth flowchart of a medical ventilation method provided by an embodiment of the present invention.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.
为了能够更加详尽地了解本发明实施例的特点与技术内容，下面结合附图对本发明实施例的实现进行详细阐述，所附附图仅供参考说明之用，并非用来限定本发明实施例。In order to understand the features and technical content of the embodiments of the present invention in more detail, the implementation of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference and description purposes only, and are not used to limit the embodiments of the present invention.
本发明实施例提供了一种医用通气方法，应用于医用通气装置。需要说明的是，在本发明的实施例中，通气控制方法可以由医用通气装置或通气设备执行。图1为本发明实施例提供的一种医用通气装置的结构示意图。The embodiment of the present invention provides a medical ventilation method, which is applied to a medical ventilation device. It should be noted that, in the embodiment of the present invention, the ventilation control method may be executed by a medical ventilation device or a ventilation device. Fig. 1 is a schematic structural diagram of a medical ventilation device provided by an embodiment of the present invention.
如图1A所示，医用通气装置1包括：接收第一气体的第一气体输入口10；As shown in FIG. 1A, the medical ventilation device 1 includes: a first gas input port 10 for receiving a first gas;
接收第二气体的第二气体输入口11；A second gas input port 11 for receiving the second gas;
与第一气体输入口10连接的第一支路12；The first branch 12 connected to the first gas input port 10;
与第二气体输入口11连接的第二支路13；The second branch 13 connected to the second gas input port 11;
与第一支路12和第二支路13连接的混合腔14；The mixing chamber 14 connected to the first branch 12 and the second branch 13;
与混合腔14连接的高频震荡发生设备15；A high-frequency oscillation generating device 15 connected to the mixing cavity 14;
分别检测第一支路12和第二支路13中气体流速的流量传感器16；A flow sensor 16 for detecting the gas flow velocity in the first branch 12 and the second branch 13 respectively;
分别检测第一支路12和第二支路13中气体压力，或者检测混合腔14中气体压力的压力传感器17；以及，A pressure sensor 17 that detects the gas pressure in the first branch 12 and the second branch 13 respectively, or detects the gas pressure in the mixing chamber 14; and,
处理器18，处理器18基于压力传感器17检测的压力和流量传感器16检测的气体流速，计算高频震荡发生设备15输出的气体流速。The processor 18 calculates the gas flow rate output by the high-frequency oscillation generating device 15 based on the pressure detected by the pressure sensor 17 and the gas flow rate detected by the flow sensor 16.
在本发明实施例中，设置在第一支路12和第二支路13的压力传感器17，或者设置在混合腔14附近或其他地方以检测混合腔14内气体压力的压力传感器17，可以测量第一气体和第二气体在经过高频震荡发生设备15之前的气体压力，基于压力传感器17检测的压力和设置在第一支路12和第二支路13的流量传感器16检测的气体流速，来计算高频震荡发生设备15输出的气体流速，这样的医用通气方法考虑到了混氧腔体内产生的压力波动对气体流速的影响，使得高频震荡发生设备15输出的气体流速可以更准确的通过计算得到。In the embodiment of the present invention, the pressure sensors 17 arranged in the first branch 12 and the second branch 13, or the pressure sensors 17 arranged near the mixing chamber 14 or elsewhere to detect the gas pressure in the mixing chamber 14, can measure The gas pressure of the first gas and the second gas before passing through the high-frequency oscillation generating device 15 is based on the pressure detected by the pressure sensor 17 and the gas flow rate detected by the flow sensor 16 provided in the first branch 12 and the second branch 13, To calculate the gas flow rate output by the high-frequency oscillation generating device 15, this medical ventilation method takes into account the influence of the pressure fluctuation generated in the oxygen mixing chamber on the gas flow rate, so that the gas flow rate output by the high-frequency oscillation generating device 15 can pass more accurately. Calculated.
其中，处理器可以通过软件、硬件、固件或者其组合实现，可以使用电路、单个或多个专用集成电路(application specific integrated circuits，ASIC)、单个或多个通用集成电路、单个或多个微处理器、单个或多个可编程逻辑器件、或者前述电路或器件的组合、或者其他适合的电路或器件，从而使得该处理器可以执行医用通气方法的相应步骤。其中，高频振荡发生设备15可以为：高频阀、振动单元、膜片或者开关阀等用于产生高频振荡的器件，本发明实施例不作限制。Among them, the processor can be implemented by software, hardware, firmware, or a combination thereof, and can use circuits, single or multiple application specific integrated circuits (ASIC), single or multiple general integrated circuits, single or multiple micro-processing A device, a single or multiple programmable logic devices, or a combination of the foregoing circuits or devices, or other suitable circuits or devices, so that the processor can execute the corresponding steps of the medical ventilation method. Among them, the high-frequency oscillation generating device 15 may be: a high-frequency valve, a vibration unit, a diaphragm or an on-off valve and other devices for generating high-frequency oscillation, which is not limited in the embodiment of the present invention.
在本发明实施例中，第一气体和第二气体分别为空气和氧气。当第一气体为氧气时，第二气体为空气，那么第一气体输入口10为氧气输入口，第二气体输入口11为空气输入口；当第一气体为空气时，第二气体为氧气，第一气体输入口10为空气输入口，第二气体输入口11为氧气输入口。In the embodiment of the present invention, the first gas and the second gas are air and oxygen respectively. When the first gas is oxygen and the second gas is air, the first gas input port 10 is the oxygen input port, and the second gas input port 11 is the air input port; when the first gas is air, the second gas is oxygen , The first gas input port 10 is an air input port, and the second gas input port 11 is an oxygen input port.
其中，第一气体和第二气体输入至医用通气装置时可以按照固定配比进行输入，固定配比由实际通气过程的需求决定的，本发明实施例不作限制。Wherein, when the first gas and the second gas are input to the medical ventilation device, they can be input according to a fixed ratio. The fixed ratio is determined by the requirements of the actual ventilation process and is not limited by the embodiment of the present invention.
需要说明的是，在本发明实施例中，第一气体输入口10连接了第一支路12，第二气体输入口11连接了第一支路12。其中，第一支路12和第一支路12为通气支路，第一支路12为传输第一气体的通路，第二支路13为传输第二气体的通路。It should be noted that, in the embodiment of the present invention, the first gas input port 10 is connected to the first branch 12, and the second gas input port 11 is connected to the first branch 12. Among them, the first branch 12 and the first branch 12 are ventilating branches, the first branch 12 is a passage for transmitting the first gas, and the second branch 13 is a passage for transmitting the second gas.
在本发明实施例中，第一支路12和第二支路13上都设置有流量传感器16，其中，第一支路12上设置的流量传感器16可以为第一流量传感器160；第二支路13上设置的流量传感器16可以为第二流量传感器161。其中，第一流量传感器160测量第一支路12中的第一气体流速；第二流量传感器161测量第二支路13中的第二气体流速。In the embodiment of the present invention, the first branch 12 and the second branch 13 are both provided with a flow sensor 16, wherein the flow sensor 16 provided on the first branch 12 may be the first flow sensor 160; The flow sensor 16 provided on the road 13 may be the second flow sensor 161. The first flow sensor 160 measures the first gas flow rate in the first branch 12; the second flow sensor 161 measures the second gas flow rate in the second branch 13.
在本发明的一些实施例中，如图1B所示，第一支路12和第二支路13上还设置有流量控制器，第一支路12上设置有第一流量控制器110，第二支路13上设置有第二流量控制器111。流量控制器可以包括：空气比例阀和氧气比例阀，用于进行氧气传输的支路采用的是氧气比例阀，用于进行空气传输的支路采用的是空气比例阀。处理器18可以通过控制比例阀的开合实现对输入流速的控制。另外，除了采用比例阀，流量控制器还可以采用高频阀、振动单元、膜片或者开关阀等实现，本发明实施例不作限制。In some embodiments of the present invention, as shown in FIG. 1B, the first branch 12 and the second branch 13 are also provided with flow controllers, the first branch 12 is provided with a first flow controller 110, and the first branch 12 is provided with a first flow controller 110. A second flow controller 111 is provided on the second branch 13. The flow controller may include an air proportional valve and an oxygen proportional valve. The branch used for oxygen transmission uses an oxygen proportional valve, and the branch used for air transmission uses an air proportional valve. The processor 18 can control the input flow rate by controlling the opening and closing of the proportional valve. In addition, in addition to using a proportional valve, the flow controller can also be implemented with a high-frequency valve, a vibration unit, a diaphragm, or an on-off valve, which is not limited in the embodiment of the present invention.
进一步地，在本发明实施例中，处理器18可以基于计算得到的高频震荡发生设备15输出的气体流速，通过第一流量控制器110和第二流量控制器111分别控制第一支路12的第一气体流速和第二支路13输出的第二气体流速，以实现对高频震荡发生设备15输出气体流速的控制，达到预设目标。Further, in the embodiment of the present invention, the processor 18 may control the first branch 12 through the first flow controller 110 and the second flow controller 111 based on the calculated gas flow rate output by the high-frequency oscillation generating device 15 The first gas flow rate and the second gas flow rate output by the second branch 13 are used to control the output gas flow rate of the high-frequency oscillation generating device 15 to achieve the preset target.
这里，处理器18在得到的高频震荡发生设备15输出的气体流速之后，基于高频震荡发生设备15输出的气体流速，可以返过来控制第一流量控制器110和第二流量控制器111，以实现对第一支路11输出的第一气体流速和第二支路13输出的第二气体流速的控制。Here, the processor 18 can control the first flow controller 110 and the second flow controller 111 based on the gas flow rate output by the high frequency oscillation generating device 15 after obtaining the gas flow rate output by the high frequency oscillation generating device 15, In order to realize the control of the first gas flow rate output by the first branch 11 and the second gas flow rate output by the second branch 13.
需要说明的是，在本发明实施例中，流量传感器16与流量控制器连接，流量控制器设置在气体输入口与混合腔14之间，流量传感器16可以设置在对应的流量控制器与气体输入口之间，也可以设置在流量控制器与混合腔14，本发明实施例不作限制。It should be noted that, in the embodiment of the present invention, the flow sensor 16 is connected to a flow controller, and the flow controller is arranged between the gas input port and the mixing chamber 14, and the flow sensor 16 can be arranged on the corresponding flow controller and gas input. The ports can also be arranged between the flow controller and the mixing chamber 14, which is not limited in the embodiment of the present invention.
示例性的，第一气体为氧气，第二气体为空气时，第一流量传感器160 与氧气比例阀110连接，第二流量传感器161与空气比例阀111连接。Exemplarily, when the first gas is oxygen and the second gas is air, the first flow sensor 160 is connected to the oxygen proportional valve 110, and the second flow sensor 161 is connected to the air proportional valve 111.
需要说明的是，在本发明实施例中，处理器18与压力传感器17和流量传感器16，以及流量控制器连接。为了简化图，下面实施例中的图示中不再显示处理器。It should be noted that in the embodiment of the present invention, the processor 18 is connected to the pressure sensor 17 and the flow sensor 16, and the flow controller. In order to simplify the figure, the processor is no longer shown in the illustrations in the following embodiments.
在本发明的一些实施例中，如图2所示，压力传感器17包括第一压力传感器170和第二压力传感器171；第一压力传感器170检测第一支路12中的第一压力；第二压力传感器171检测第二支路13中的第二压力。In some embodiments of the present invention, as shown in FIG. 2, the pressure sensor 17 includes a first pressure sensor 170 and a second pressure sensor 171; the first pressure sensor 170 detects the first pressure in the first branch 12; The pressure sensor 171 detects the second pressure in the second branch 13.
需要说明的是，第一压力传感器170和第二压力传感器171在第一支路12和第二支路13上的设置位置本发明实施例不作限制，只需设置在气体输入口与混合腔14之间即可，图2仅为一种示例性的设置。It should be noted that the locations of the first pressure sensor 170 and the second pressure sensor 171 on the first branch 12 and the second branch 13 are not limited in the embodiment of the present invention, and only need to be provided at the gas input port and the mixing chamber 14. Immediately, Figure 2 is only an exemplary setting.
在本发明实施例中，处理器18可以基于第一压力传感器170检测的第一压力和第二压力传感器171检测的第二压力，结合第一气体流速和第二气体流速，以及预设压力与气体流量的关系，计算得到高频震荡发生设备15输出的气体流速。In the embodiment of the present invention, the processor 18 may combine the first gas flow rate and the second gas flow rate, and the preset pressure and the second pressure based on the first pressure detected by the first pressure sensor 170 and the second pressure detected by the second pressure sensor 171. The relationship between the gas flow rate and the gas flow rate output by the high-frequency oscillation generator 15 is calculated.
这里，高频震荡发生设备15输出的气体流量可以通过下面的公式(2)计算得到，具体为：Here, the gas flow rate output by the high-frequency oscillation generator 15 can be calculated by the following formula (2), which is specifically:
Q3＝(a1*Q1*PS1+a2*Q2*PS2)/P        (2)Q3=(a1*Q1*PS1+a2*Q2*PS2)/P(2)
其中，Q1为第一气体流量，Q2为第二气体流量，Q3为高频震荡发生设备15输出的总气体流量，PS1为第一压力，PS2为第二压力，P为大气压力(1.013X10^5pa)，a1和a2为修正系数。Among them, Q1 is the first gas flow rate, Q2 is the second gas flow rate, Q3 is the total gas flow rate output by the high-frequency oscillation generator 15, PS1 is the first pressure, PS2 is the second pressure, and P is the atmospheric pressure (1.013X10^ 5pa), a1 and a2 are correction coefficients.
需要说明的是，修正系数为修正上述预设压力与气体流量关系的系数，可以通过实验得到的，或者根据实际训练得到的，修正系数的获取方法本发明实施例不作限制。在本发明实施例中，气体流速和气体流量是等价的概念。It should be noted that the correction coefficient is a coefficient for correcting the relationship between the preset pressure and the gas flow rate, which can be obtained through experiments or actual training. The method for obtaining the correction coefficient is not limited in the embodiment of the present invention. In the embodiment of the present invention, the gas flow rate and the gas flow rate are equivalent concepts.
由上述可知，医用通气装置在检测到了第一压力、第二压力、第一气体流速和第二气体流速之后，就可以代入公式(2)，计算得到Q3的值了。It can be seen from the above that after the medical ventilator detects the first pressure, the second pressure, the first gas flow rate, and the second gas flow rate, it can be substituted into formula (2) to calculate the value of Q3.
可以理解的是，基于本方法，充分考虑到了由第一支路12和第二支路13到混氧腔体时会产生压力波动，使得高频震荡发生设备15输出的气体流速可以准确的计算得到，从而提高了测量气体流速的测量精度。It is understandable that, based on this method, full consideration is given to the pressure fluctuations that occur when the first branch 12 and the second branch 13 reach the oxygen mixing chamber, so that the gas flow rate output by the high-frequency oscillation generator 15 can be accurately calculated Obtained, thereby improving the measurement accuracy of measuring the gas flow rate.
需要说明的是，医用通气装置在计算高频震荡发生设备15输出的气体流速时，可以通过第一支路12和第二支路13的压力来计算，也可以通过混合腔14中的压力来计算，不论采用哪种方式，都是考虑了在高频震荡发生设备15之前的气体压力波动了。It should be noted that when the medical ventilation device calculates the gas flow rate output by the high-frequency oscillation generating device 15, it can be calculated by the pressure of the first branch 12 and the second branch 13, or by the pressure in the mixing chamber 14. In the calculation, no matter which method is adopted, the gas pressure fluctuation before the high-frequency oscillation generating device 15 is considered.
在本发明的一些实施例中，如图3所示，压力传感器17包括检测混合腔14中气体压力的第三压力传感器172。In some embodiments of the present invention, as shown in FIG. 3, the pressure sensor 17 includes a third pressure sensor 172 that detects the gas pressure in the mixing chamber 14.
在本发明实施例中，处理器18基于第三压力传感器172检测的第三压力，结合第一气体流速和第二气体流速，计算高频震荡发生设备15输出的气体流速。In the embodiment of the present invention, the processor 18 calculates the gas flow rate output by the high-frequency oscillation generating device 15 based on the third pressure detected by the third pressure sensor 172 in combination with the first gas flow rate and the second gas flow rate.
需要说明的是，第三压力传感器172可以设置在混合腔14，或者设置在第一流量控制器110和第二流量控制器111之后，高频震荡发生设备15之前均可。It should be noted that the third pressure sensor 172 may be arranged in the mixing chamber 14 or after the first flow controller 110 and the second flow controller 111 or before the high-frequency oscillation generating device 15.
详细的，医用通气装置1中的处理器18可以基于第三压力传感器172检测到的第三压力，结合第一气体流速和第二气体流速，以及预设压力与气体流量的关系，得到高频震荡发生设备15输出的气体流速。具体地，高频震荡发生设备15输出的气体流量可以通过下面的公式(3)计算得到，如下：In detail, the processor 18 in the medical ventilation device 1 can obtain the high frequency based on the third pressure detected by the third pressure sensor 172, combining the first gas flow rate and the second gas flow rate, and the relationship between the preset pressure and the gas flow rate. The gas flow rate output by the oscillation generating device 15. Specifically, the gas flow rate output by the high-frequency oscillation generator 15 can be calculated by the following formula (3), as follows:
Q3＝a*(Q1+Q2)*PS0/P        (3)Q3=a*(Q1+Q2)*PS0/P (3)
其中，Q1为第一气体流量，Q2为第二气体流量，Q3为高频震荡发生设备15输出的总气体流量，PS0为第三压力，P为大气压力(1.013X10^5pa)，a为修正系数。Among them, Q1 is the first gas flow, Q2 is the second gas flow, Q3 is the total gas flow output by the high-frequency oscillation generator 15, PSO is the third pressure, P is the atmospheric pressure (1.013X10^5pa), and a is the correction coefficient.
由上述可知，医用通气装置在检测到了第三压力、第一气体流速和第二气体流速之后，就可以代入公式(3)，计算得到Q3的值了。It can be seen from the above that after the medical ventilator detects the third pressure, the first gas flow rate, and the second gas flow rate, it can be substituted into formula (3) to calculate the value of Q3.
在本发明的一些实施例中，如图4所示，医用通气装置1还包括：与高频震荡发生设备15连接的压力发生器19。In some embodiments of the present invention, as shown in FIG. 4, the medical ventilation device 1 further includes: a pressure generator 19 connected to a high-frequency oscillation generating device 15.
需要说明的是，在高频通气模式下，在高频送气时，第一支路12输出的第一气体和第二支路13输出的第二气体在混合腔14内进行混合，最后通过高频震荡发生设备15产生高频震荡气体，经由压力发生器19输出至病人。It should be noted that in the high-frequency ventilation mode, the first gas output by the first branch 12 and the second gas output by the second branch 13 are mixed in the mixing chamber 14, and finally pass through the high frequency. The frequency oscillation generating device 15 generates high frequency oscillation gas, which is output to the patient via the pressure generator 19.
示例性的，假设第一气体为高压氧气，第二气体为高压空气，第一流量控制器110采用氧气比例阀，第二流量控制器111采用空气比例阀，高频震荡发生设备15为高频比例阀，第一流量传感器160为氧气流量传感器，第二流量传感器161为控气流量传感器。在高频通气模式下，气路工作过程可以为：高压氧气经过氧气流量传感器和氧气比例阀，通过氧气比例阀的控制流量大小进入混合腔14，而高压空气经过空气流量传感器和空气比例阀，通过空气比例阀的控制流量大小进入混合腔14，高压空气和高压氧气在混合腔14进行混合，然后通过高频比例阀，传输到压力发生器19，最后输出到连接到病人端，多余的气体则从压力发生器19的大气端排出。Exemplarily, assuming that the first gas is high-pressure oxygen and the second gas is high-pressure air, the first flow controller 110 uses an oxygen proportional valve, the second flow controller 111 uses an air proportional valve, and the high-frequency oscillation generator 15 is a high-frequency For proportional valves, the first flow sensor 160 is an oxygen flow sensor, and the second flow sensor 161 is a control gas flow sensor. In the high-frequency ventilation mode, the working process of the gas circuit can be: high-pressure oxygen passes through the oxygen flow sensor and the oxygen proportional valve, and enters the mixing chamber 14 through the control flow of the oxygen proportional valve, and the high-pressure air passes through the air flow sensor and the air proportional valve. The flow rate controlled by the air proportional valve enters the mixing chamber 14, high-pressure air and high-pressure oxygen are mixed in the mixing chamber 14, and then passed through the high-frequency proportional valve, transmitted to the pressure generator 19, and finally output to the patient end, the excess gas It is discharged from the atmospheric end of the pressure generator 19.
在本发明实施例中，压力发生器19一端接高频震荡发生设备15，一端接患者接口，还有一端接大气。In the embodiment of the present invention, one end of the pressure generator 19 is connected to the high-frequency oscillation generating device 15, one end is connected to the patient interface, and the other end is connected to the atmosphere.
在本发明的一些实施例中，如图5A所示，医用通气装置1还包括第四压力传感器173；第四压力传感器173与压力发生器19连接，测量压力发生器19输出的第四压力。In some embodiments of the present invention, as shown in FIG. 5A, the medical ventilation device 1 further includes a fourth pressure sensor 173; the fourth pressure sensor 173 is connected to the pressure generator 19 to measure the fourth pressure output by the pressure generator 19.
在本发明实施例中，处理器18基于第一支路12和第二支路13中气体的压力或混合腔14中气体的压力，第四压力传感器173检测的第四压力，以及第一支路12和第二支路13中气体的流速，计算高频震荡发生设备15输出的气体流速。In the embodiment of the present invention, the processor 18 is based on the pressure of the gas in the first branch 12 and the second branch 13 or the pressure of the gas in the mixing chamber 14, the fourth pressure detected by the fourth pressure sensor 173, and the first branch. The flow rate of the gas in the circuit 12 and the second branch 13 is calculated from the gas flow rate output by the high-frequency oscillation generator 15.
在本发明实施例中，第四压力传感器173可以设置在高频震荡发生器15与压力发生器19之间，也可以设置在压力发生器19上实时检测，本发 明实施例不作限制。In the embodiment of the present invention, the fourth pressure sensor 173 may be arranged between the high-frequency oscillation generator 15 and the pressure generator 19, or may be arranged on the pressure generator 19 for real-time detection, which is not limited in the embodiment of the present invention.
需要说明的是，在本发明实施例中，基于压力发生器19一端与大气连接，那么可以采用压力发生器19端的检测到的压力来代替大气压力，计算高频震荡发生设备15输出的气体流量。It should be noted that in the embodiment of the present invention, based on the connection of one end of the pressure generator 19 to the atmosphere, the detected pressure at the end of the pressure generator 19 can be used instead of the atmospheric pressure to calculate the gas flow rate output by the high-frequency oscillation generator 15 .
一方面，如图5A所示，医用通气装置1中的处理器18可以基于第一压力、第二压力和第四压力，结合第一气体流速和第二气体流速，以及预设压力与气体流量的关系，得到高频震荡发生设备15输出的气体流速。具体地，高频震荡发生设备15气体流速可以通过公式(4)计算得到，如下：On the one hand, as shown in FIG. 5A, the processor 18 in the medical ventilation device 1 may be based on the first pressure, the second pressure, and the fourth pressure, combining the first gas flow rate and the second gas flow rate, and the preset pressure and gas flow rate. The gas flow rate output by the high-frequency oscillation generator 15 is obtained. Specifically, the gas flow rate of the high-frequency oscillation generating device 15 can be calculated by formula (4), as follows:
Q3＝(a1*Q1*PS1+a2*Q2*PS2)/PS3        (4)Q3=(a1*Q1*PS1+a2*Q2*PS2)/PS3 (4)
其中，PS3为第四压力。Among them, PS3 is the fourth pressure.
由上述可知，医用通气装置在检测到了第一压力、第二压力、第四压力、第一气体流速和第二气体流速之后，就可以代入公式(4)，计算得到Q3的值了。It can be seen from the above that after the medical ventilation device detects the first pressure, the second pressure, the fourth pressure, the first gas flow rate, and the second gas flow rate, it can be substituted into formula (4) to calculate the value of Q3.
可以理解的是，医用通气装置可以通过测量第一支路12和第二支路13的压力，并基于上述压力，以及检测到的第一支路12和第二支路13中气体流速，基于压力变化与体积长反比的关系，就可以计算出高频震荡发生设备15输出的气体流速，充分考虑到了由第一支路12和第二支路13到混氧腔体时会产生压力波动，使得高频震荡发生设备15输出的气体流速可以准确的计算得到，从而提高了测量气体流速的测量精度。It is understandable that the medical ventilation device can measure the pressure of the first branch 12 and the second branch 13, and based on the above pressure, and the detected gas flow rate in the first branch 12 and the second branch 13, based on The relationship between the pressure change and the inverse ratio of the volume length can be used to calculate the gas flow rate output by the high-frequency oscillation generator 15, taking into account the pressure fluctuations that occur when the first branch 12 and the second branch 13 reach the mixing chamber. The gas flow rate output by the high-frequency oscillation generating device 15 can be accurately calculated, thereby improving the measurement accuracy of the gas flow rate.
另一方面，如图5B所示，医用通气装置1中的处理器18可以基于第三压力和第四压力，结合第一气体流速和第二气体流速，以及预设压力与气体流量的关系，计算高频震荡发生设备15输出的气体流速。具体地，可以通过公式(5)计算高频震荡发生设备15输出的气体流速，如下：On the other hand, as shown in FIG. 5B, the processor 18 in the medical ventilation device 1 may combine the first gas flow rate and the second gas flow rate, and the relationship between the preset pressure and the gas flow rate based on the third pressure and the fourth pressure, Calculate the gas flow rate output by the high-frequency oscillation generator 15. Specifically, the gas flow rate output by the high-frequency oscillation generating device 15 can be calculated by formula (5), as follows:
Q3＝a*(Q1+Q2)*PS0/PS3        (5)Q3=a*(Q1+Q2)*PS0/PS3 (5)
由上述可知，医用通气装置在检测到了第三压力和第四压力、第一气体流速和第二气体流速之后，就可以代入公式(5)，计算得到Q3的值了。It can be seen from the above that after the medical ventilator detects the third pressure and the fourth pressure, the first gas flow rate and the second gas flow rate, it can be substituted into formula (5) to calculate the value of Q3.
可以理解的是，医用通气装置可以通过测量混合腔14的第三压力，并基于第三压力，以及检测到的第一支路12和第二支路13中气体流速，基于压力变化与体积长反比的关系，就可以计算出高频震荡发生设备15输出的气体流速，充分考虑到了混氧腔体会产生压力波动，使得高频震荡发生设备15输出的气体流速可以准确的计算得到，从而提高了测量气体流速的测量精度。It is understandable that the medical ventilation device can measure the third pressure of the mixing chamber 14 based on the third pressure, and the detected gas flow rate in the first branch 12 and the second branch 13, based on the pressure change and volume length. With the inverse relationship, the gas flow rate output by the high-frequency oscillation generating device 15 can be calculated, and the pressure fluctuations generated by the oxygen mixing chamber are fully considered, so that the gas flow rate output by the high-frequency oscillation generating device 15 can be accurately calculated, thereby improving Measuring accuracy of gas flow rate.
基于前述的医用通气装置的结构，图6为本发明实施例提供的一种应用于医用通气装置中的医用通气方法的流程示意图。如图6所示，医用通气方法主要包括以下步骤：Based on the structure of the aforementioned medical ventilation device, FIG. 6 is a schematic flowchart of a medical ventilation method applied to a medical ventilation device according to an embodiment of the present invention. As shown in Figure 6, the medical ventilation method mainly includes the following steps:
S101、压力传感器分别检测第一支路和第二支路中气体压力，或者检测混合腔中气体压力，输出压力。S101: The pressure sensor detects the gas pressure in the first branch and the second branch respectively, or detects the gas pressure in the mixing chamber, and outputs the pressure.
S102、流量传感器分别检测第一支路和第二支路中气体流速。S102. The flow sensor detects the gas flow rate in the first branch and the second branch respectively.
S103、处理器基于压力传感器检测的压力和流量传感器检测的气体流速，计算高频震荡发生设备输出的气体流速。S103. The processor calculates the gas flow rate output by the high-frequency oscillation generating device based on the pressure detected by the pressure sensor and the gas flow rate detected by the flow sensor.
本发明实施例提供的医用通气方法应用在高频通气模式下，也可以应用在CPAP、BiLEVEL通气模式下，本发明实施例不作限制。The medical ventilation method provided in the embodiment of the present invention is applied in the high-frequency ventilation mode, and can also be applied in the CPAP and BiLEVEL ventilation modes, which is not limited by the embodiment of the present invention.
下面以高频通气模式为例进行说明。The following takes the high-frequency ventilation mode as an example.
在本发明实施例中，医用通气装置中设置有接收第二气体的第二气体输入口；与第一气体输入口连接的第一支路；与第二气体输入口连接的第二支路；与第一支路和第二支路连接的混合腔；与混合腔连接的高频震荡发生设备；分别检测第一支路和第二支路中气体流速的流量传感器；分别检测第一支路和第二支路中气体压力，或者检测混合腔中气体压力的压力传感器；以及，处理器。In the embodiment of the present invention, the medical ventilation device is provided with a second gas input port that receives the second gas; a first branch connected to the first gas input port; a second branch connected to the second gas input port; The mixing chamber connected to the first branch and the second branch; the high-frequency oscillation generator connected to the mixing chamber; the flow sensor that detects the gas flow velocity in the first branch and the second branch respectively; the first branch is detected separately And the gas pressure in the second branch, or a pressure sensor that detects the gas pressure in the mixing chamber; and, the processor.
需要说明的是，在本发明实施例中，第一气体和第二气体分别为空气和氧气。当第一气体为氧气时，第二气体为空气，那么第一气体输入口10为氧气输入口，第二气体输入口为空气输入口；当第一气体为空气时，第 二气体为氧气，第一气体输入口为空气输入口，第二气体输入口为氧气输入口。It should be noted that in the embodiment of the present invention, the first gas and the second gas are air and oxygen respectively. When the first gas is oxygen and the second gas is air, the first gas input port 10 is the oxygen input port, and the second gas input port is the air input port; when the first gas is air, the second gas is oxygen, The first gas input port is an air input port, and the second gas input port is an oxygen input port.
其中，第一气体和第二气体输入至医用通气装置时可以按照固定配比进行输入，固定配比由实际通气过程的需求决定的，本发明实施例不作限制。Wherein, when the first gas and the second gas are input to the medical ventilation device, they can be input according to a fixed ratio. The fixed ratio is determined by the requirements of the actual ventilation process and is not limited by the embodiment of the present invention.
需要说明的是，在本发明实施例中，第一气体输入口连接了第一支路，第二气体输入口连接了第一支路。其中，第一支路和第一支路为通气支路，第一支路为传输第一气体的通路，第二支路为传输第二气体的通路。高频振荡发生设备可以为：高频阀、振动单元、膜片或者开关阀等用于产生高频振荡的器件，本发明实施例不作限制。It should be noted that, in the embodiment of the present invention, the first gas input port is connected to the first branch, and the second gas input port is connected to the first branch. Among them, the first branch and the first branch are ventilation branches, the first branch is a passage for transmitting the first gas, and the second branch is a passage for transmitting the second gas. The high-frequency oscillation generating device may be: a high-frequency valve, a vibration unit, a diaphragm or an on-off valve and other devices used to generate high-frequency oscillation, which is not limited in the embodiment of the present invention.
基于医用通气装置的结构可知，压力传感器分别检测第一支路和第二支路中气体压力，或者检测混合腔中气体压力，输出压力；流量传感器分别检测第一支路和第二支路中气体流速。这样，处理器就可以基于压力传感器检测的压力和流量传感器检测的气体流速，计算高频震荡发生设备输出的气体流速了。详细的实现过程将在后面的实施例中进行说明。Based on the structure of the medical ventilation device, the pressure sensor detects the gas pressure in the first branch and the second branch respectively, or detects the gas pressure in the mixing chamber, and outputs the pressure; the flow sensor detects the gas pressure in the first branch and the second branch respectively Gas flow rate. In this way, the processor can calculate the gas flow rate output by the high-frequency oscillation generator based on the pressure detected by the pressure sensor and the gas flow rate detected by the flow sensor. The detailed implementation process will be described in the following embodiments.
可以理解的是，设置在第一支路和第二支路的压力传感器，或者设置在混合腔附近或其他地方以检测混合腔内气体压力的压力传感器，可以测量第一气体和第二气体在经过高频震荡发生设备之前的气体压力，基于压力传感器检测的压力和设置在第一支路和第二支路的流量传感器检测的气体流速，来计算高频震荡发生设备输出的气体流速，这样的医用通气方法考虑到了混氧腔体内产生的压力波动对气体流速的影响，使得高频震荡发生设备输出的气体流速可以更准确的通过计算得到。It is understandable that the pressure sensors arranged in the first branch and the second branch, or the pressure sensors arranged near the mixing chamber or elsewhere to detect the gas pressure in the mixing chamber, can measure the pressure of the first gas and the second gas After the gas pressure before the high-frequency oscillation generating device, the gas flow rate output by the high-frequency oscillation generating device is calculated based on the pressure detected by the pressure sensor and the gas flow rate detected by the flow sensors arranged in the first branch and the second branch. The medical ventilation method takes into account the influence of pressure fluctuations generated in the oxygen mixing chamber on the gas flow rate, so that the gas flow rate output by the high-frequency oscillation generator can be more accurately calculated.
在本发明的一些实施例中，流量传感器包括：第一流量传感器和第二流量传感器；压力传感器包括第一压力传感器和第二压力传感器；这样，如图7所示，本发明实施例还提供了一种医用通气方法，包括：In some embodiments of the present invention, the flow sensor includes: a first flow sensor and a second flow sensor; the pressure sensor includes a first pressure sensor and a second pressure sensor; thus, as shown in FIG. 7, the embodiment of the present invention also provides A method of medical ventilation including:
S201、第一压力传感器检测第一支路中的气体压力，输出第一压力。S201: The first pressure sensor detects the gas pressure in the first branch, and outputs the first pressure.
S202、第二压力传感器检测第二支路中的气体压力，输出第二压力。S202: The second pressure sensor detects the gas pressure in the second branch, and outputs the second pressure.
S203、第一流量传感器检测第一支路的第一气体的流速，输出第一气体流速。S203: The first flow sensor detects the flow rate of the first gas in the first branch, and outputs the first gas flow rate.
S204、第二流量传感器检测第二支路的第二气体的流速，输出第二气体流速。S204. The second flow sensor detects the flow rate of the second gas in the second branch, and outputs the second gas flow rate.
S205、处理器基于第一压力，第二压力，结合第一气体流速和第二气体流速，计算高频震荡发生设备输出的气体流速。S205. The processor calculates the gas flow rate output by the high-frequency oscillation generator based on the first pressure, the second pressure, and the first gas flow rate and the second gas flow rate.
在本发明实施例中，第一压力传感器和第二压力传感器在第一支路和第二支路上的设置位置本发明实施例不作限制，只需其他气体输入口与混合腔间即可。In the embodiment of the present invention, the location of the first pressure sensor and the second pressure sensor on the first branch and the second branch is not limited in the embodiment of the present invention, and only needs to be between other gas input ports and the mixing chamber.
在本发明实施例中，第一支路和第二支路上都设置有流量传感器，其中，第一支路上设置的流量传感器可以为第一流量传感器；第二支路上设置的流量传感器可以为第二流量传感器。其中，第一流量传感器测量第一支路中的第一气体流速；第二流量传感器测量第二支路中的第二气体流速。In the embodiment of the present invention, flow sensors are provided on both the first branch and the second branch, wherein the flow sensor provided on the first branch may be the first flow sensor; the flow sensor provided on the second branch may be the first 2. Flow sensor. The first flow sensor measures the first gas flow rate in the first branch; the second flow sensor measures the second gas flow rate in the second branch.
需要说明的是，医用通气装置中的处理器可以基于第一压力和第二压力，结合第一气体流速和第二气体流速，以及预设压力与气体流量的关系，计算得到高频震荡发生设备输出的气体流速。It should be noted that the processor in the medical ventilation device can calculate the high-frequency oscillation generating equipment based on the first pressure and the second pressure, combining the first gas flow rate and the second gas flow rate, and the relationship between the preset pressure and the gas flow rate. The output gas flow rate.
需要说明的是，气体方程为公式(1)，如下：It should be noted that the gas equation is formula (1), as follows:
pv＝nRT                 (1)pv=nRT (1)
其中，p为大气压，v为气体体积，n为物质的量，R为理想气体常数，T为温度，在相同时间内的nRT保持不变的情况下，压力的变化就跟体积成反比关系。基于这个思想，预设压力与气体流量的关系整体成反比关系。Among them, p is the atmospheric pressure, v is the gas volume, n is the amount of substance, R is the ideal gas constant, and T is the temperature. When the nRT in the same time remains unchanged, the pressure change is inversely proportional to the volume. Based on this idea, the overall relationship between preset pressure and gas flow is inversely proportional.
示例性的，这里，高频震荡发生设备输出的气体流量可以通过下面的公式(2)计算得到，具体为：Exemplarily, here, the gas flow rate output by the high-frequency oscillation generating device can be calculated by the following formula (2), specifically:
Q3＝(a1*Q1*PS1+a2*Q2*PS2)/P        (2)Q3=(a1*Q1*PS1+a2*Q2*PS2)/P(2)
其中，Q1为第一气体流量，Q2为第二气体流量，Q3为高频震荡发生设备输出的总气体流量，PS1为第一压力，PS2为第二压力，P为大气压力(1.013X10^5pa)，a1和a2为修正系数。Among them, Q1 is the first gas flow, Q2 is the second gas flow, Q3 is the total gas flow output by the high-frequency oscillation generator, PS1 is the first pressure, PS2 is the second pressure, and P is the atmospheric pressure (1.013X10^5pa ), a1 and a2 are correction coefficients.
需要说明的是，修正系数为修正上述预设压力与气体流量关系的系数，可以通过实验中得到的，或者根据实际训练得到的，修正系数的获取方法本发明实施例不作限制。在本发明实施例中，气体流速和气体流量是等价的概念。It should be noted that the correction coefficient is a coefficient for correcting the relationship between the preset pressure and the gas flow rate. It can be obtained through experiments or actual training. The method for obtaining the correction coefficient is not limited in the embodiment of the present invention. In the embodiment of the present invention, the gas flow rate and the gas flow rate are equivalent concepts.
由上述可知，医用通气装置在检测到了第一压力、第二压力、第一气体流速和第二气体流速之后，就可以代入公式(2)，计算得到Q3的值了。It can be seen from the above that after the medical ventilator detects the first pressure, the second pressure, the first gas flow rate, and the second gas flow rate, it can be substituted into formula (2) to calculate the value of Q3.
可以理解的是，本方法充分考虑到了由第一支路和第二支路到混氧腔体时会产生压力波动，使得高频震荡发生设备输出的气体流速可以准确的计算得到，从而提高了测量气体流速的测量精度。It is understandable that this method fully takes into account the pressure fluctuations that occur when the first branch and the second branch reach the mixed oxygen chamber, so that the gas flow rate output by the high-frequency oscillation generator can be accurately calculated, thereby improving Measuring accuracy of gas flow rate.
在本发明的一些实施例中，流量传感器包括：第一流量传感器和第二流量传感器；压力传感器包括检测混合腔中气体压力的第三压力传感器；这样，如图8所示，本发明实施例还提供了一种医用通气方法，包括：In some embodiments of the present invention, the flow sensor includes: a first flow sensor and a second flow sensor; the pressure sensor includes a third pressure sensor that detects the gas pressure in the mixing chamber; thus, as shown in FIG. 8, the embodiment of the present invention A medical ventilation method is also provided, including:
S301、第三压力传感器检测混合腔中气体压力，输出第三压力。S301. The third pressure sensor detects the gas pressure in the mixing chamber and outputs a third pressure.
S302、第一流量传感器检测第一支路的第一气体的流速，输出第一气体流速。S302. The first flow sensor detects the flow rate of the first gas in the first branch, and outputs the first gas flow rate.
S303、第二流量传感器检测第二支路的第二气体的流速，输出第二气体流速。S303. The second flow sensor detects the flow rate of the second gas in the second branch, and outputs the second gas flow rate.
S304、处理器基于第三压力传感器检测的第三压力，结合第一气体流速和第二气体流速，计算高频震荡发生设备输出的气体流速。S304: Based on the third pressure detected by the third pressure sensor, the processor calculates the gas flow rate output by the high-frequency oscillation generator in combination with the first gas flow rate and the second gas flow rate.
需要说明的是，第三压力传感器设置在混合腔和高频震荡发生设备之间即可。It should be noted that the third pressure sensor can be arranged between the mixing cavity and the high-frequency oscillation generating device.
详细的，医用通气装置中的处理器可以基于第三压力传感器检测到的 第三压力，结合第一气体流速和第二气体流速，以及预设压力与气体流量的关系，得到高频震荡发生设备输出的气体流速。具体地，高频震荡发生设备输出的气体流量可以通过下面的公式(3)计算得到，如下：In detail, the processor in the medical ventilation device can obtain a high-frequency oscillation generating device based on the third pressure detected by the third pressure sensor, combining the first gas flow rate and the second gas flow rate, and the relationship between the preset pressure and the gas flow rate. The output gas flow rate. Specifically, the gas flow rate output by the high-frequency oscillation generator can be calculated by the following formula (3), as follows:
Q3＝a*(Q1+Q2)*PS0/P           (3)Q3=a*(Q1+Q2)*PS0/P (3)
其中，Q1为第一气体流量，Q2为第二气体流量，Q3为高频震荡发生设备输出的总气体流量，PS0为第三压力，P为大气压力(1.013X10^5pa)，a为修正系数。Among them, Q1 is the first gas flow, Q2 is the second gas flow, Q3 is the total gas flow output by the high-frequency oscillation generator, PS0 is the third pressure, P is the atmospheric pressure (1.013X10^5pa), and a is the correction coefficient .
由上述可知，医用通气装置在检测到了第三压力、第一气体流速和第二气体流速之后，就可以代入公式(3)，计算得到Q3的值了。It can be seen from the above that after the medical ventilator detects the third pressure, the first gas flow rate, and the second gas flow rate, it can be substituted into formula (3) to calculate the value of Q3.
可以理解的是，医用通气装置可以通过测量混合腔的第三压力，并基于第三压力，以及检测到的第一支路和第二支路中气体流速，基于压力变化与体积长反比的关系，就可以计算出高频震荡发生设备输出的气体流速，充分考虑到了混氧腔体会产生压力波动，使得高频震荡发生设备输出的气体流速可以准确的计算得到，从而提高了测量气体流速的测量精度。It is understandable that the medical ventilation device can measure the third pressure of the mixing chamber based on the third pressure, and the detected gas flow rate in the first branch and the second branch, based on the inverse relationship between the pressure change and the volume length , The gas flow rate output by the high-frequency oscillation generator can be calculated, taking into account the pressure fluctuations in the mixed oxygen chamber, so that the gas flow rate output by the high-frequency oscillation generator can be accurately calculated, thereby improving the measurement of the measured gas flow rate Accuracy.
在本发明的一些实施例中，医用通气装置还包括：与高频震荡发生设备连接的压力发生器。医用通气装置还包括第四压力传感器；第四压力传感器与压力发生器连接，测量压力发生器输出的第四压力；如图9所示，本发明实施例还提供了一种医用通气方法，包括：In some embodiments of the present invention, the medical ventilation device further includes: a pressure generator connected to the high-frequency oscillation generating device. The medical ventilation device further includes a fourth pressure sensor; the fourth pressure sensor is connected to the pressure generator and measures the fourth pressure output by the pressure generator; as shown in FIG. 9, an embodiment of the present invention also provides a medical ventilation method, including :
S401、第一流量传感器检测第一支路的第一气体的流速，输出第一气体流速。S401. The first flow sensor detects the flow rate of the first gas in the first branch, and outputs the first gas flow rate.
S402、第二流量传感器检测第二支路的第二气体的流速，输出第二气体流速。S402: The second flow sensor detects the flow rate of the second gas in the second branch, and outputs the second gas flow rate.
S403、第四压力传感器测量压力发生器，输出第四压力。S403. The fourth pressure sensor measures the pressure generator and outputs the fourth pressure.
S404、第一压力传感器检测第一支路中的气体压力，输出第一压力。S404: The first pressure sensor detects the gas pressure in the first branch, and outputs the first pressure.
S405、第二压力传感器检测第二支路中的气体压力，输出第二压力。S405. The second pressure sensor detects the gas pressure in the second branch and outputs the second pressure.
S406、处理器基于第一支路和第二支路中气体的第一压力、第二压力、 第四压力传感器检测的第四压力，以及第一支路和第二支路中的气体的流速，计算高频震荡发生设备输出的气体流速。S406. The processor is based on the first pressure and the second pressure of the gas in the first branch and the second branch, the fourth pressure detected by the fourth pressure sensor, and the flow rate of the gas in the first branch and the second branch. , Calculate the gas flow rate output by the high-frequency oscillation generator.
S407、第三压力传感器检测混合腔中气体压力，输出第三压力。S407: The third pressure sensor detects the gas pressure in the mixing chamber, and outputs the third pressure.
S408、处理器基于第三压力和第四压力传感器检测的第四压力，以及第一支路和第二支路中的气体的流速，计算高频震荡发生设备输出的气体流速。S408: The processor calculates the gas flow rate output by the high-frequency oscillation generating device based on the third pressure and the fourth pressure detected by the fourth pressure sensor, and the flow rate of the gas in the first branch and the second branch.
需要说明的是，在高频通气模式下，在高频送气时，第一支路输出的第一气体和第二支路输出的第二气体在混合腔内进行混合，最后通过高频震荡发生设备产生高频震荡气体，经由压力发生器输出至病人。It should be noted that in the high-frequency ventilation mode, during high-frequency air supply, the first gas output by the first branch and the second gas output by the second branch are mixed in the mixing chamber, and finally generated by high-frequency oscillation The device generates high-frequency oscillating gas, which is output to the patient via a pressure generator.
示例性的，假设第一气体为高压氧气，第二气体为高压空气，第一流量控制器采用氧气比例阀，第二流量控制器采用空气比例阀，高频震荡发生设备为高频比例阀，第一流量传感器为氧气流量传感器，第二流量传感器为控气流量传感器。在高频通气模式下，气路工作过程可以为：高压氧气经过氧气流量传感器和氧气比例阀，通过氧气比例阀的控制流量大小进入混合腔，而高压空气经过空气流量传感器和空气比例阀，通过空气比例阀的控制流量大小进入混合腔，高压空气和高压氧气在混合腔进行混合，然后通过高频比例阀，传输到压力发生器，最后输出到连接到病人端，多余的气体则从压力发生器的大气端排出。Exemplarily, assuming that the first gas is high-pressure oxygen, the second gas is high-pressure air, the first flow controller uses an oxygen proportional valve, the second flow controller uses an air proportional valve, and the high-frequency oscillation generator is a high-frequency proportional valve. The first flow sensor is an oxygen flow sensor, and the second flow sensor is a control gas flow sensor. In the high-frequency ventilation mode, the working process of the gas circuit can be: high-pressure oxygen passes through the oxygen flow sensor and the oxygen proportional valve, and enters the mixing chamber through the control flow of the oxygen proportional valve, and high-pressure air passes through the air flow sensor and the air proportional valve. The control flow of the air proportional valve enters the mixing chamber, and the high-pressure air and high-pressure oxygen are mixed in the mixing chamber, and then passed through the high-frequency proportional valve, transmitted to the pressure generator, and finally output to the patient end. The excess gas is generated from the pressure The air side of the device is discharged.
在本发明实施例中，压力发生器一端接高频震荡发生设备，一端接患者接口，还有一端接大气。In the embodiment of the present invention, one end of the pressure generator is connected to the high-frequency oscillation generator, one end is connected to the patient interface, and the other end is connected to the atmosphere.
在本发明实施例中，第四压力传感器可以设置在高频震荡发生设备与压力发生器之间，也可以设置在压力发生器上实时检测，本发明实施例不作限制。In the embodiment of the present invention, the fourth pressure sensor may be disposed between the high-frequency oscillation generating device and the pressure generator, or may be disposed on the pressure generator for real-time detection, which is not limited in the embodiment of the present invention.
需要说明的是，在本发明实施例中，基于压力发生器一端与大气连接，那么可以采用压力发生器端的检测到的压力来代替大气压力，计算高频震荡发生设备输出的气体流量。It should be noted that, in the embodiment of the present invention, based on the connection of one end of the pressure generator with the atmosphere, the pressure detected at the end of the pressure generator can be used instead of the atmospheric pressure to calculate the gas flow output by the high-frequency oscillation generating device.
针对S404-S406，医用通气装置中的处理器可以基于第一压力、第二压力和第四压力，结合第一气体流速和第二气体流速，以及预设压力与气体流量的关系，得到高频震荡发生设备输出的气体流速。具体地，高频震荡发生设备气体流速可以通过公式(4)计算得到，如下：For S404-S406, the processor in the medical ventilation device can obtain high frequency based on the first pressure, second pressure, and fourth pressure, combining the first gas flow rate and the second gas flow rate, and the relationship between the preset pressure and the gas flow rate. The flow rate of gas output by the oscillating device. Specifically, the gas flow rate of the high-frequency oscillation generating equipment can be calculated by formula (4), as follows:
Q3＝(a1*Q1*PS1+a2*Q2*PS2)/PS3        (4)Q3=(a1*Q1*PS1+a2*Q2*PS2)/PS3 (4)
其中，PS3为第四压力。Among them, PS3 is the fourth pressure.
由上述可知，医用通气装置在检测到了第一压力、第二压力、第四压力、第一气体流速和第二气体流速之后，就可以代入公式(4)，计算得到Q3的值了。It can be seen from the above that after the medical ventilation device detects the first pressure, the second pressure, the fourth pressure, the first gas flow rate, and the second gas flow rate, it can be substituted into formula (4) to calculate the value of Q3.
可以理解的是，医用通气装置可以通过测量第一支路和第二支路的压力，并基于上述压力，以及检测到的第一支路和第二支路中气体流速，基于压力变化与体积长反比的关系，就可以计算出高频震荡发生设备输出的气体流速，充分考虑到了由第一支路和第二支路到混氧腔体时会产生压力波动，使得高频震荡发生设备输出的气体流速可以准确的计算得到，从而提高了测量气体流速的测量精度。It is understandable that the medical ventilation device can measure the pressure of the first branch and the second branch based on the above pressure, and the detected gas flow rate in the first branch and the second branch, based on the pressure change and volume The relationship between the length and the inverse ratio can calculate the gas flow rate output by the high-frequency oscillation generator, taking into account the pressure fluctuations generated from the first branch and the second branch to the mixed oxygen chamber, which makes the high-frequency oscillation generator output The gas flow rate can be accurately calculated, thereby improving the measurement accuracy of measuring the gas flow rate.
针对S407-S408，医用通气装置中的处理器可以基于第三压力和第四压力，结合第一气体流速和第二气体流速，以及预设压力与气体流量的关系，计算高频震荡发生设备输出的气体流速。具体地，可以通过公式(5)计算高频震荡发生设备输出的气体流速，如下：For S407-S408, the processor in the medical ventilation device can calculate the output of the high-frequency oscillation generator based on the third pressure and the fourth pressure, combining the first gas flow rate and the second gas flow rate, and the relationship between the preset pressure and the gas flow rate The gas flow rate. Specifically, the gas flow rate output by the high-frequency oscillation generator can be calculated by formula (5), as follows:
Q3＝a*(Q1+Q2)*PS0/PS3          (5)Q3=a*(Q1+Q2)*PS0/PS3 (5)
由上述可知，医用通气装置在检测到了第三压力和第四压力、第一气体流速和第二气体流速之后，就可以代入公式(5)，计算得到Q3的值了。It can be seen from the above that after the medical ventilator detects the third pressure and the fourth pressure, the first gas flow rate and the second gas flow rate, it can be substituted into formula (5) to calculate the value of Q3.
可以理解的是，医用通气装置可以通过测量混合腔的第三压力，并基于第三压力，以及检测到的第一支路和第二支路中气体流速，基于压力变化与体积长反比的关系，就可以计算出高频震荡发生设备输出的气体流速，充分考虑到了混氧腔体会产生压力波动，使得高频震荡发生设备输出的气 体流速可以准确的计算得到，从而提高了测量气体流速的测量精度。It is understandable that the medical ventilation device can measure the third pressure of the mixing chamber based on the third pressure, and the detected gas flow rate in the first branch and the second branch, based on the inverse relationship between the pressure change and the volume length , The gas flow rate output by the high-frequency oscillation generator can be calculated, taking into account the pressure fluctuations in the mixed oxygen chamber, so that the gas flow rate output by the high-frequency oscillation generator can be accurately calculated, thereby improving the measurement of the measured gas flow rate Accuracy.
需要说明的是，S401-406为一种通过第四压力传感器测量高频震荡发生设备输出的气体流速的医用通气方法，S401-403和S407-S408为另一种通过第四压力传感器测量高频震荡发生设备输出的气体流速的医用通气方法。具体的采用哪种方法测量高频震荡发生设备输出的气体流速是由实际压力传感器的设置方式决定的，本发明实施例不作限制。It should be noted that S401-406 is a medical ventilation method that uses a fourth pressure sensor to measure the gas flow rate output by a high-frequency oscillation generating device, and S401-403 and S407-S408 are another method that uses a fourth pressure sensor to measure high frequency. A medical ventilation method that oscillates the gas flow rate output by the device. The specific method used to measure the gas flow rate output by the high-frequency oscillation generating device is determined by the setting mode of the actual pressure sensor, which is not limited in the embodiment of the present invention.
在本发明的一些实施例中，第一支路还设有：第一流量控制器；第二支路还设有：第二流量控制器。上述医用通气方法中处理器在计算高频震荡发生设备输出的气体流速之后，该处理器基于计算得到的高频震荡发生设备输出的气体流速，控制第一支路的第一气体流速和第二支路输出的第二气体流速。In some embodiments of the present invention, the first branch is further provided with: a first flow controller; the second branch is further provided with: a second flow controller. In the above-mentioned medical ventilation method, after the processor calculates the gas flow rate output by the high-frequency oscillation generating device, the processor controls the first gas flow rate and the second gas flow rate of the first branch based on the calculated gas flow rate output by the high-frequency oscillation generating device. The second gas flow rate output by the branch.
在本发明实施例中，第一支路和第二支路上都设置有流量传感器，其中，第一支路上设置的流量传感器可以为第一流量传感器；第二支路上设置的流量传感器可以为第二流量传感器。其中，第一流量传感器测量第一支路中的第一气体流速；第二流量传感器测量第二支路中的第二气体流速。In the embodiment of the present invention, flow sensors are provided on both the first branch and the second branch, wherein the flow sensor provided on the first branch may be the first flow sensor; the flow sensor provided on the second branch may be the first 2. Flow sensor. The first flow sensor measures the first gas flow rate in the first branch; the second flow sensor measures the second gas flow rate in the second branch.
在本发明的一些实施例中，第一支路和第二支路上还设置有流量控制器，第一支路上设置有第一流量控制器，第二支路上设置有第二流量控制器。流量控制器可以包括：空气比例阀和氧气比例阀，用于进行氧气传输的支路采用的是氧气比例阀，用于进行空气传输的支路采用的是空气比例阀。处理器可以通过控制比例阀的开合实现对输入流速的控制。另外，除了采用比例阀，流量控制器还可以采用高频阀、振动单元、膜片或者开关阀等实现，本发明实施例不作限制。In some embodiments of the present invention, the first branch and the second branch are further provided with a flow controller, the first branch is provided with a first flow controller, and the second branch is provided with a second flow controller. The flow controller may include an air proportional valve and an oxygen proportional valve. The branch used for oxygen transmission uses an oxygen proportional valve, and the branch used for air transmission uses an air proportional valve. The processor can control the input flow rate by controlling the opening and closing of the proportional valve. In addition, in addition to using a proportional valve, the flow controller can also be implemented with a high-frequency valve, a vibration unit, a diaphragm, or an on-off valve, which is not limited in the embodiment of the present invention.
进一步地，在本发明实施例中，处理器可以基于计算得到的高频震荡发生设备输出的气体流速，控制第一支路的第一气体流速和第二支路输出的第二气体流速。Further, in the embodiment of the present invention, the processor may control the first gas flow rate of the first branch and the second gas flow rate of the second branch based on the calculated gas flow rate output by the high-frequency oscillation generating device.
这里，处理器在得到的高频震荡发生设备输出的气体流速之后，基于 高频震荡发生设备输出的气体流速，可以反过来控制第一流量控制器和第二流量控制器，以实现对第一支路输出的第一气体流速和第二支路输出的第二气体流速的控制。Here, after the processor obtains the gas flow rate output by the high-frequency oscillation generating device, based on the gas flow rate output by the high-frequency oscillation generating device, it can control the first flow controller and the second flow controller in turn to achieve the first Control of the first gas flow rate output by the branch and the second gas flow rate output by the second branch.
需要说明的是，在本发明实施例中，流量传感器与流量控制器连接，流量控制器设置在气体输入口与混合腔之间，流量传感器可以设置在对应的流量控制器与气体输入口之间，也可以设置在流量控制器与混合腔，本发明实施例不作限制。It should be noted that in the embodiment of the present invention, the flow sensor is connected to the flow controller, the flow controller is arranged between the gas input port and the mixing chamber, and the flow sensor can be arranged between the corresponding flow controller and the gas input port , It can also be set in the flow controller and the mixing chamber, which is not limited in the embodiment of the present invention.
示例性的，第一气体为氧气，第二气体为空气时，第一流量传感器与氧气比例阀连接，第二流量传感器与空气比例阀连接。Exemplarily, when the first gas is oxygen and the second gas is air, the first flow sensor is connected to the oxygen proportional valve, and the second flow sensor is connected to the air proportional valve.
可以理解的是，医用通气装置在高频通气时，可以基于第一支路或第二支路的其他压力，表征高频震荡发生设备在震荡前的混合腔侧的压力波动，或者直接通过测量混合腔的气体压力，来测量经过高频震荡发生设备震荡的高频气体的流速，从而提高了测量的准确率，同时，基于测量的高频气体的流速可以再控制第一支路和第二支路的流量控制器的开关，使得第一气体和第二气体的比例或者流量发生变化，满足高频通气需求。It is understandable that, during high-frequency ventilation, the medical ventilation device can be based on other pressures in the first branch or the second branch to characterize the pressure fluctuations on the mixing chamber side of the high-frequency oscillation generating device before the oscillation, or directly through measurement The gas pressure of the mixing chamber is used to measure the flow rate of the high-frequency gas oscillated by the high-frequency oscillation generator, thereby improving the accuracy of the measurement. At the same time, the first branch and the second branch can be controlled based on the measured flow rate of the high-frequency gas. The switch of the flow controller of the branch makes the ratio or flow of the first gas and the second gas change to meet the demand of high-frequency ventilation.
本发明实施例提供了一种呼吸机，包括：上述结构的医用通气装置。The embodiment of the present invention provides a ventilator including: the medical ventilation device with the above structure.
本发明实施例还提供了一种计算机可读存储介质，，存储有可执行通气指令，用于引起医用通气装置的处理器执行时，实现本发明实施例提供的通气的方法。The embodiment of the present invention also provides a computer-readable storage medium that stores executable ventilation instructions for causing the processor of the medical ventilation device to execute the ventilation method provided in the embodiments of the present invention.
在本公开实施例中的各组成部分可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。The various components in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The above-mentioned integrated unit can be realized in the form of hardware or software function module.
所述集成的单元如果以软件功能模块的形式实现并非作为独立的产品进行销售或使用时，可以存储在一个计算机可读取存储介质中，基于这样的理解，本实施例的技术方案本质上或者说对现有技术做出贡献的部分或 者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或processor(处理器)执行本实施例所述方法的全部或部分步骤。而前述的存储介质包括：磁性随机存取存储器(FRAM，ferromagnetic random access memory)、只读存储器(ROM，Read Only Memory)、可编程只读存储器(PROM，Programmable Read-Only Memory)、可擦除可编程只读存储器(EPROM，Erasable Programmable Read-Only Memory)、电可擦除可编程只读存储器(EEPROM，Electrically Erasable Programmable Read-Only Memory)、快闪存储器(Flash Memory)、磁表面存储器、光盘、或只读光盘(CD-ROM，Compact Disc Read-Only Memory)等各种可以存储程序代码的介质，本公开实施例不作限制。If the integrated unit is implemented in the form of a software function module and is not sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this embodiment is essentially or It is said that the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions to enable a computer device (which can A personal computer, server, or network device, etc.) or a processor (processor) executes all or part of the steps of the method described in this embodiment. The aforementioned storage media include: magnetic random access memory (FRAM, ferromagnetic random access memory), read-only memory (ROM, Read Only Memory), programmable read-only memory (PROM, Programmable Read-Only Memory), erasable Programmable Read-Only Memory (EPROM, Erasable Programmable Read-Only Memory), Electrically Erasable Programmable Read-Only Memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), Flash Memory, Magnetic Surface Memory, Optical Disk Various media that can store program codes, such as CD-ROM (Compact Disc Read-Only Memory), etc., are not limited in the embodiments of the present disclosure.
工业实用性Industrial applicability
本发明实施例提供了一种医用通气方法及装置、呼吸机、计算机可读存储介质，采用上述医用通气装置实现医用通气方法时，由于医用通气装置可以在第一支路和第二支路设置的压力传感器中，获取第一气体和第二气体的压力，或者在混合腔中附近设置的压力传感器中，获取混合腔中第一气体和第二气体的混合气体的压力，同时还可以检测到第一支路和第二支路中气体流速，这样基于压力变化与体积长反比的关系，计算出高频震荡发生设备输出的气体流速，这样的处理充分考虑到了混氧腔体内会产生压力波动，使得高频震荡发生设备输出的气体流速可以更准确的计算得到，提高了测量气体流速的测量精度。The embodiments of the present invention provide a medical ventilation method and device, a ventilator, and a computer-readable storage medium. When the above-mentioned medical ventilation device is used to implement the medical ventilation method, the medical ventilation device can be installed in the first branch and the second branch. In the pressure sensor, obtain the pressure of the first gas and the second gas, or obtain the pressure of the mixed gas of the first gas and the second gas in the mixing chamber in the pressure sensor set near the mixing chamber, and can also detect The gas flow rate in the first branch and the second branch is calculated based on the relationship between the pressure change and the inverse ratio of the volume length to the gas flow rate output by the high-frequency oscillation generator. This processing fully takes into account the pressure fluctuations in the oxygen mixing chamber , So that the gas flow rate output by the high-frequency oscillation generator can be calculated more accurately, and the measurement accuracy of measuring the gas flow rate is improved.

Claims (19)

  1. 一种医用通气装置，所述装置包括：A medical ventilation device, the device comprising:
    接收第一气体的第一气体输入口；A first gas input port for receiving the first gas;
    接收第二气体的第二气体输入口；A second gas input port for receiving the second gas;
    与所述第一气体输入口连接的第一支路；A first branch connected to the first gas input port;
    与所述第二气体输入口连接的第二支路；A second branch connected to the second gas input port;
    与所述第一支路和所述第二支路连接的混合腔；A mixing chamber connected to the first branch and the second branch;
    与所述混合腔连接的高频震荡发生设备；A high-frequency oscillation generating device connected to the mixing cavity;
    分别检测所述第一支路和所述第二支路中气体流速的流量传感器；A flow sensor for detecting the gas flow velocity in the first branch and the second branch respectively;
    分别检测所述第一支路和所述第二支路中气体压力，或者检测所述混合腔中气体压力的压力传感器；以及，A pressure sensor that detects the gas pressure in the first branch and the second branch respectively, or detects the gas pressure in the mixing chamber; and,
    处理器，处理器基于所述压力传感器检测的压力和所述流量传感器检测的气体流速，计算所述高频震荡发生设备输出的气体流速。The processor calculates the gas flow rate output by the high-frequency oscillation generating device based on the pressure detected by the pressure sensor and the gas flow rate detected by the flow sensor.
  2. 根据权利要求1所述的装置，其中，The device of claim 1, wherein:
    流量传感器包括：第一流量传感器和第二流量传感器；所述第一流量传感器测量所述第一支路中的所述第一气体流速；所述第二流量传感器测量所述第二支路中的所述第二气体流速。The flow sensor includes: a first flow sensor and a second flow sensor; the first flow sensor measures the flow rate of the first gas in the first branch; the second flow sensor measures the flow in the second branch The second gas flow rate.
  3. 根据权利要求2所述的装置，其中，所述压力传感器包括第一压力传感器和第二压力传感器；The device according to claim 2, wherein the pressure sensor comprises a first pressure sensor and a second pressure sensor;
    所述第一压力传感器检测所述第一支路中的第一压力；The first pressure sensor detects the first pressure in the first branch;
    所述第二压力传感器检测所述第二支路中的第二压力；The second pressure sensor detects the second pressure in the second branch;
    所述处理器基于所述第一压力传感器检测的第一压力和所述第二压力传感器检测的第二压力，结合所述第一气体流速和所述第二气体流速，计算所述高频震荡发生设备输出的气体流速。The processor calculates the high frequency oscillation based on the first pressure detected by the first pressure sensor and the second pressure detected by the second pressure sensor in combination with the first gas flow rate and the second gas flow rate The gas flow rate output by the generator.
  4. 根据权利要求2所述的装置，其中，所述压力传感器包括检测所述 混合腔中气体压力的第三压力传感器；The device according to claim 2, wherein the pressure sensor comprises a third pressure sensor that detects the pressure of the gas in the mixing chamber;
    所述处理器基于所述第三压力传感器检测的第三压力，结合所述第一气体流速和所述第二气体流速，计算所述高频震荡发生设备输出的气体流速。The processor calculates the gas flow rate output by the high-frequency oscillation generating device based on the third pressure detected by the third pressure sensor in combination with the first gas flow rate and the second gas flow rate.
  5. 根据权利要求1所述的装置，其中，医用通气装置还包括：与所述高频震荡发生设备连接的压力发生器。The device according to claim 1, wherein the medical ventilation device further comprises: a pressure generator connected to the high-frequency oscillation generating device.
  6. 根据权利要求5所述的装置，其中，医用通气装置还包括第四压力传感器；The device according to claim 5, wherein the medical ventilation device further comprises a fourth pressure sensor;
    所述第四压力传感器与所述压力发生器连接，测量所述压力发生器输出的第四压力；The fourth pressure sensor is connected to the pressure generator, and measures the fourth pressure output by the pressure generator;
    所述处理器基于所述第一支路和第二支路中气体的压力或所述混合腔中气体的压力，所述第四压力传感器检测的所述第四压力，以及所述第一支路和第二支路中气体的流速，计算所述高频震荡发生设备输出的气体流速。The processor is based on the pressure of the gas in the first branch and the second branch or the pressure of the gas in the mixing chamber, the fourth pressure detected by the fourth pressure sensor, and the first branch Calculating the flow rate of the gas output by the high-frequency oscillation generator.
  7. 根据权利要求1至6任一项所述的装置，其中，The device according to any one of claims 1 to 6, wherein:
    所述处理器基于计算得到的所述高频震荡发生设备输出的气体流速，控制所述第一支路输出的第一气体流速和所述第二支路输出的第二气体流速。The processor controls the first gas flow rate output by the first branch and the second gas flow rate output by the second branch based on the calculated gas flow rate output by the high-frequency oscillation generating device.
  8. 根据权利要求1至7任一项所述的装置，其中，The device according to any one of claims 1 to 7, wherein:
    所述第一支路还设有：第一流量控制器；所述第二支路还设有：第二流量控制器。The first branch is further provided with: a first flow controller; the second branch is further provided with: a second flow controller.
  9. 一种医用通气方法，应用于如权利要求1至8任一项所述的医用通气装置中，所述方法包括：A medical ventilation method applied to the medical ventilation device according to any one of claims 1 to 8, the method comprising:
    压力传感器分别检测第一支路和第二支路中气体压力，或者检测混合腔中气体压力，输出压力；The pressure sensor detects the gas pressure in the first branch and the second branch respectively, or detects the gas pressure in the mixing chamber, and outputs the pressure;
    流量传感器分别检测所述第一支路和所述第二支路中气体流速；A flow sensor detects the gas flow velocity in the first branch and the second branch respectively;
    处理器基于所述压力传感器检测的压力和所述流量传感器检测的气体流速，计算所述高频震荡发生设备输出的气体流速。The processor calculates the gas flow rate output by the high-frequency oscillation generating device based on the pressure detected by the pressure sensor and the gas flow rate detected by the flow sensor.
  10. 根据权利要求9所述的方法，其中，所述流量传感器包括：第一流量传感器和第二流量传感器；所述流量传感器分别检测所述第一支路和所述第二支路中气体流速的步骤包括：The method according to claim 9, wherein the flow sensor comprises: a first flow sensor and a second flow sensor; the flow sensor detects the flow rate of the gas in the first branch and the second branch respectively The steps include:
    所述第一流量传感器检测第一支路的第一气体的流速，输出第一气体流速；The first flow sensor detects the flow rate of the first gas in the first branch, and outputs the flow rate of the first gas;
    所述第二流量传感器检测第二支路的第二气体的流速，输出第二气体流速。The second flow sensor detects the flow rate of the second gas in the second branch, and outputs the second gas flow rate.
  11. 根据权利要求10所述的方法，其中，所述压力传感器包括第一压力传感器和第二压力传感器；所述压力传感器分别检测第一支路和第二支路中气体压力，输出压力的步骤包括：The method according to claim 10, wherein the pressure sensor comprises a first pressure sensor and a second pressure sensor; the pressure sensor detects the gas pressure in the first branch and the second branch respectively, and the step of outputting the pressure comprises :
    所述第一压力传感器检测所述第一支路中的气体压力，输出第一压力；The first pressure sensor detects the gas pressure in the first branch, and outputs a first pressure;
    所述第二压力传感器检测所述第二支路中的气体压力，输出第二压力。The second pressure sensor detects the gas pressure in the second branch and outputs a second pressure.
  12. 根据权利要求11所述的方法，其中，所述处理器基于所述压力传感器检测的压力和所述流量传感器检测的气体流速，计算所述高频震荡发生设备输出的气体流速的步骤包括：The method according to claim 11, wherein the step of the processor calculating the gas flow rate output by the high frequency oscillation generating device based on the pressure detected by the pressure sensor and the gas flow rate detected by the flow sensor comprises:
    所述处理器基于所述第一压力，所述第二压力，结合所述第一气体流速和所述第二气体流速，计算所述高频震荡发生设备输出的气体流速。The processor calculates the gas flow rate output by the high-frequency oscillation generator based on the first pressure, the second pressure, and the first gas flow rate and the second gas flow rate.
  13. 根据权利要求10所述的方法，其中，所述压力传感器包括检测所述混合腔中气体压力的第三压力传感器；所述处理器基于所述压力传感器检测的压力和所述流量传感器检测的气体流速，计算所述高频震荡发生设备输出的气体流速的步骤包括：The method of claim 10, wherein the pressure sensor includes a third pressure sensor that detects the pressure of the gas in the mixing chamber; the processor is based on the pressure detected by the pressure sensor and the gas detected by the flow sensor. Flow rate, the step of calculating the gas flow rate output by the high-frequency oscillation generating device includes:
    所述处理器基于所述第三压力传感器检测的第三压力，结合所述第 一气体流速和所述第二气体流速，计算所述高频震荡发生设备输出的气体流速。The processor calculates the gas flow rate output by the high-frequency oscillation generating device based on the third pressure detected by the third pressure sensor in combination with the first gas flow rate and the second gas flow rate.
  14. 根据权利要求9所述的方法，其中，所述医用通气装置还包括：与所述高频震荡发生设备连接的压力发生器。The method according to claim 9, wherein the medical ventilation device further comprises: a pressure generator connected to the high-frequency oscillation generating device.
  15. 根据权利要求14所述的方法，其中，所述医用通气装置还包括第四压力传感器；所述处理器基于所述压力传感器检测的压力和所述流量传感器检测的气体流速，计算所述高频震荡发生设备输出的气体流速的步骤包括：The method according to claim 14, wherein the medical ventilation device further comprises a fourth pressure sensor; the processor calculates the high frequency based on the pressure detected by the pressure sensor and the gas flow rate detected by the flow sensor The steps to oscillate the gas flow rate output by the device include:
    所述第四压力传感器与所述压力发生器连接，测量所述压力发生器输出的第四压力；The fourth pressure sensor is connected to the pressure generator, and measures the fourth pressure output by the pressure generator;
    所述处理器基于所述第一支路和第二支路中气体的压力或所述混合腔中气体的压力，所述第四压力传感器检测的第四压力，以及所述第一支路和所述第二支路中的气体的流速，计算所述高频震荡发生设备输出的气体流速。The processor is based on the pressure of the gas in the first branch and the second branch or the pressure of the gas in the mixing chamber, the fourth pressure detected by the fourth pressure sensor, and the first branch and The flow rate of the gas in the second branch is calculated from the flow rate of the gas output by the high-frequency oscillation generating device.
  16. 根据权利要求10至15任一项所述的方法，其中，所述方法还包括：The method according to any one of claims 10 to 15, wherein the method further comprises:
    所述处理器基于计算得到的所述高频震荡发生设备输出的气体流速，控制所述第一支路的第一气体流速和所述第二支路输出的第二气体流速。The processor controls the first gas flow rate of the first branch and the second gas flow rate of the second branch based on the calculated gas flow rate output by the high-frequency oscillation generating device.
  17. 根据权利要求10至16任一项所述的方法，其中，The method according to any one of claims 10 to 16, wherein:
    所述第一支路还设有：第一流量控制器；所述第二支路还设有：第二流量控制器。The first branch is further provided with: a first flow controller; the second branch is further provided with: a second flow controller.
  18. 一种呼吸机，包括：A ventilator including:
    如权利要求1-8任一项所述的医用通气装置。The medical ventilation device according to any one of claims 1-8.
  19. 一种计算机可读存储介质，存储有可执行通气指令，用于引起医用通气装置的处理器执行时，实现权利要求9至17任一项所述的方法。A computer-readable storage medium storing executable ventilation instructions for causing the processor of a medical ventilation device to execute the method according to any one of claims 9 to 17.
PCT/CN2019/096912 2019-07-19 2019-07-19 Medical ventilation method and device, ventilator, and computer readable storage medium WO2021012127A1 (en)

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