WO2023125451A1 - 呼吸相确定方法、装置 - Google Patents

呼吸相确定方法、装置 Download PDF

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Publication number
WO2023125451A1
WO2023125451A1 PCT/CN2022/142089 CN2022142089W WO2023125451A1 WO 2023125451 A1 WO2023125451 A1 WO 2023125451A1 CN 2022142089 W CN2022142089 W CN 2022142089W WO 2023125451 A1 WO2023125451 A1 WO 2023125451A1
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Prior art keywords
value
pressure
gas flow
patient
difference
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PCT/CN2022/142089
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English (en)
French (fr)
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汪啸尘
庄志
郑芳
田鑫
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天津怡和嘉业医疗科技有限公司
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Publication of WO2023125451A1 publication Critical patent/WO2023125451A1/zh

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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
    • A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
    • A61M16/022—Control means therefor
    • A61M16/024—Control means therefor including calculation means, e.g. using a processor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
    • 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
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • 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
    • A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
    • A61M16/022—Control means therefor
    • A61M16/024—Control means therefor including calculation means, e.g. using a processor
    • A61M16/026—Control means therefor including calculation means, e.g. using a processor specially adapted for predicting, e.g. for determining an information representative of a flow limitation during a ventilation cycle by using a root square technique or a regression analysis
    • 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
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0015—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors
    • A61M2016/0018—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors electrical
    • A61M2016/0021—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors electrical with a proportional output signal, e.g. from a thermistor
    • 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
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
    • 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
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
    • A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
    • A61M2016/0036—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the breathing tube and used in both inspiratory and expiratory phase
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/50—General characteristics of the apparatus with microprocessors or computers
    • A61M2205/502—User interfaces, e.g. screens or keyboards
    • A61M2205/505—Touch-screens; Virtual keyboard or keypads; Virtual buttons; Soft keys; Mouse touches

Definitions

  • the embodiments of the present application relate to the technical field of medical devices, and in particular, relate to a method for determining a respiratory phase, an apparatus for determining a respiratory phase, an electronic device, and a readable storage medium.
  • Ventilation therapy supplies oxygen continuously through a nasal oxygen tube inserted into the patient's nasal cavity.
  • the patient's breathing process is divided into two processes: inhalation and exhalation.
  • inhalation the patient needs to inhale a large amount of oxygen, while during the exhalation process, no oxygen is needed. Therefore, it is necessary to recognize the patient's respiratory phase (inhalation or exhalation) in real time, so as to adjust the oxygen supply according to the respiratory phase.
  • the nasal oxygen tube is an open air circuit, the gas flow and pressure values collected by the equipment in the nasal oxygen tube are difficult to directly reflect the patient's own breathing conditions. Therefore, an additional measurement method is usually added to the recognition of the respiratory phase. . It is common to lead a pressure measurement line from the nasal oxygen tube to judge the respiratory phase by directly measuring the change of the internal pressure of the nasal oxygen tube; or to measure the patient's breathing condition by means of thermal sensitivity, chest and abdominal belt, etc. , so as to judge the respiratory phase.
  • these two methods all need to add additional devices, and the structure is complicated.
  • Embodiments of the present application provide a respiratory phase determination method, device, electronic equipment, and readable storage medium to solve the technical problem that an additional device needs to be added for respiratory phase determination and the structure is complex.
  • the embodiment of the present application provides a respiratory phase determination method, which is applied to a ventilation therapy device, and the ventilation therapy device includes a breathing circuit, and the method includes:
  • the pressure sensor is used to collect the pressure in the breathing circuit
  • a current respiratory phase of the patient is determined.
  • converting the gas flow value and the pressure value into the first value and the second value under the same reference includes:
  • the gas flow value and the pressure value are converted into a first value and a second value under the same physical quantity.
  • converting the gas flow value and the pressure value into the first value and the second value under the same physical quantity includes:
  • the gas flow value is converted into a first value under the physical quantity of pressure, and the pressure value is used as the second value.
  • the converting the gas flow value into the first value under the physical quantity of pressure includes:
  • the square of the gas flow value is multiplied by the air resistance coefficient of the ventilation therapy device to obtain the first value under the pressure physical quantity.
  • converting the gas flow value and the pressure value into the first value and the second value under the same physical quantity includes:
  • the pressure value is converted into a second value under the flow physical quantity, and the gas flow value is used as the first value.
  • converting the pressure value into a second value under the flow physical quantity includes:
  • the square extraction is performed on the intermediate value to obtain the second value under the flow physical quantity.
  • converting the gas flow value and the pressure value into the first value and the second value under the same reference includes:
  • the gas flow value is scaled as the first value, and the pressure value is used as the second value;
  • the pressure value is scaled as the second value, and the gas flow value is used as the first value.
  • the determining the current respiratory phase of the patient according to the difference between the first value and the second value includes:
  • the current respiratory phase of the patient is determined based on the first difference.
  • the determining the current respiratory phase of the patient according to the first difference includes:
  • the embodiment of the present application provides a respiratory phase determination device, which is applied to a ventilation therapy device, and the ventilation therapy device includes a breathing circuit, and the device includes:
  • An acquisition module configured to acquire the gas flow value in the breathing circuit, and obtain the pressure value of the pressure sensor; the pressure sensor is used to collect the pressure in the breathing circuit;
  • a conversion module configured to convert the gas flow value and the pressure value into a first value and a second value under the same benchmark
  • a determining module configured to determine the current respiratory phase of the patient according to the difference between the first value and the second value.
  • the embodiment of the present application provides an electronic device, including a processor, a memory, and a program or instruction stored on the memory and operable on the processor, and the program or instruction is processed by the Implement the described method when the device executes.
  • the embodiment of the present application provides a readable storage medium, the readable storage medium stores a program or an instruction, and when the program or instruction is executed by a processor, the method is implemented.
  • the difference determines the patient's current respiratory phase.
  • the first value and the second value are converted values, which are the values under the same benchmark, so the first value and the second value can be subtracted to obtain the difference related to the patient's breathing factor, so as to judge according to the difference
  • the patient's current respiratory phase That is to say, only the pressure value and the gas flow value of the breathing circuit can be used to judge the respiratory phase of the patient without adding additional auxiliary judgment equipment, which simplifies the structure of the ventilation therapy device.
  • FIG. 1 is a flow chart of the steps of a respiratory phase determination method provided in the embodiment of the present application
  • Fig. 2 is a curve diagram of the sensor signal change brought by the patient's respiration in the embodiment of the present application
  • Fig. 3 is a curve diagram of sensor signal changes brought about by the adjustment of ventilation therapy equipment in the embodiment of the present application;
  • Fig. 4 is the relation diagram between the graph in Fig. 2 and the graph in Fig. 3 and the sensor signal diagram in the embodiment of the present application;
  • Fig. 5 is the graph of first value and second value and the graph of difference in the embodiment of the present application.
  • FIG. 6 is a comparison diagram before and after filtering of the sensor signal graph in the embodiment of the present application.
  • FIG. 7 is a first schematic diagram of the electronic device in the embodiment of the present application.
  • FIG. 8 is a second schematic diagram of the electronic device in the embodiment of the present application.
  • the embodiment of the present application provides a method for determining the respiratory phase, which is applied to the ventilation therapy equipment, as shown in Figure 1, the method includes the following steps:
  • Step 101 obtain the gas flow value in the breathing circuit, and obtain the pressure value of the pressure sensor; the pressure sensor is used to collect the pressure in the breathing circuit;
  • the ventilation therapy device in the embodiment of the present application may include a device body, a breathing circuit, a patient interface, a flow sensor, and a pressure sensor.
  • the device body is used to output gas with preset pressure and flow rate, and the device body includes a gas outlet.
  • the breathing circuit includes a first end and a second end that communicate with each other. The first end of the breathing circuit communicates with the air outlet, and the second end communicates with the patient interface.
  • the patient interface is used to be worn on the patient's nasal cavity. When the patient interface is worn on the patient's nasal cavity, an air outlet gap is provided between the patient interface and the patient's nasal cavity.
  • the pressure sensor is used to obtain the pressure value in the breathing circuit
  • the flow sensor is used to obtain the gas flow value in the breathing circuit.
  • the flow sensor can be used to obtain the gas flow value in the breathing circuit
  • the pressure sensor can be used to obtain the pressure value in the breathing circuit
  • Step 102 converting the gas flow value and pressure value into a first value and a second value under the same benchmark
  • the patient's breathing can lead to changes in the pressure value and gas flow value in the breathing circuit, and the adjustment of the output pressure and output flow of the ventilation therapy equipment will also cause changes in the pressure value and gas flow value in the breathing circuit, that is to say
  • the acquired pressure values and gas flow values are the result of the joint action of the patient's breathing and the ventilation therapy equipment.
  • pressure value pressure value change caused by the patient's breathing factor + pressure value change caused by the ventilation therapy equipment factor
  • gas flow value gas flow value change caused by the patient's breathing factor + Changes in gas flow values caused by ventilation therapy equipment factors.
  • the same reference may mean that the first value and the second value belong to the physical quantity of the same dimension, or mean that the mean value of the first value and the second value is within a predetermined range.
  • the gas flow value can be converted to a value on the same basis as the pressure value based on the pressure value; the pressure value can also be converted to a value on the same basis as the gas flow value based on the gas flow value; Convert the pressure value and gas flow value to another same base.
  • Step 103 determine the current respiratory phase of the patient according to the difference between the first value and the second value.
  • the difference determines the patient's current respiratory phase.
  • the first value and the second value are converted values, which are the values under the same benchmark, so the first value and the second value can be subtracted to obtain the difference related to the patient's breathing factor, so as to judge according to the difference
  • the patient's current respiratory phase That is to say, only the pressure value and the gas flow value of the breathing circuit can be used to judge the respiratory phase of the patient without adding additional auxiliary judgment equipment, which simplifies the structure of the ventilation therapy device.
  • step 102 the gas flow value and the pressure value are converted into the first value and the second value under the same benchmark, including:
  • P is the pressure value
  • F is the gas flow value
  • ⁇ is the air resistance coefficient, which is an inherent parameter of the ventilation therapy equipment, which can be determined in advance through experiments, or iteratively calculated during operation.
  • the obtained pressure value and gas flow value can be converted by the above formula, so as to obtain the first value and the second value under the same physical quantity, and subtract the first value and the second value to obtain the patient's respiration-related difference.
  • converting the gas flow value and pressure value into the first value and the second value under the same physical quantity includes:
  • the obtained pressure value is converted by the above formula to obtain the second value of the flow physical quantity, and the first value and the second value are subtracted to obtain the difference related to the patient's respiration.
  • converting the pressure value into the second value under the flow physical quantity includes:
  • the square root is performed on the intermediate value to obtain the second value under the flow physical quantity.
  • the intermediate value is obtained by dividing the pressure value by the air resistance coefficient, which is the square of the gas flow value, and then the intermediate value is square rooted to obtain the second value under the physical quantity of flow.
  • the obtained pressure value is converted by the above formula to obtain the second value of the flow physical quantity, and the first value and the second value are subtracted to obtain the difference related to the patient's respiration.
  • converting the gas flow value and pressure value into the first value and the second value under the same physical quantity includes:
  • the obtained gas flow value is converted by the above formula, so as to obtain the first value under the physical quantity of pressure, and subtract the first value and the second value to obtain the difference related to the patient's respiration.
  • converting the gas flow value into the first value under the physical quantity of pressure includes:
  • the square of the pressure value is multiplied by the air resistance coefficient of the ventilation therapy device to obtain the first value under the pressure physical quantity.
  • the obtained pressure value is converted by the above formula to obtain the second value of the flow physical quantity, and the first value and the second value are subtracted to obtain the difference related to the patient's respiration.
  • the conversion of the gas flow value into the pressure value and the conversion of the pressure value into the gas flow value may not calculate the exact value, only the calculated first value and the second value need to be able to reflect It is enough to get the approximate change rule of the value.
  • the square of the change of the gas flow value + the square of the change of the gas flow value caused by the factor of the ventilation therapy equipment can reduce the difficulty of calculation.
  • converting the gas flow value and pressure value into the first value and the second value under the same benchmark includes:
  • the gas flow value is scaled as the first value, and the pressure value is used as the second value;
  • the pressure value is scaled as the second value, and the gas flow value is used as the first value.
  • the enlargement ratio and reduction ratio can be flexibly selected according to the actual situation. For example, obtain the gas flow value and pressure value collected by the patient for at least one respiratory cycle, average the gas flow value to obtain the first average, and average the pressure value to obtain the second average, and the amplification ratio and reduction ratio can be the second The ratio of the first mean to the second mean.
  • the gas flow value or pressure value is scaled, the gas flow value and pressure value are under the same reference, so the first value and the second value can be subtracted to obtain the difference related to the patient's respiration, so as to determine the patient's breath according to the difference. of the respiratory phase.
  • determining the current respiratory phase of the patient according to the difference between the first value and the second value includes:
  • the current respiratory phase of the patient is determined from the first difference.
  • the change of pressure value and gas flow value due to the patient's respiration is reversed, while the change of pressure value and gas flow value caused by the ventilation therapy device is in the same direction, so it can be obtained by subtracting the second value from the first value
  • obtain the first difference related to the patient's respiration and judge the patient's respiration phase according to the first difference.
  • determining the current respiratory phase of the patient according to the first difference includes:
  • the pressure value change curve and the gas flow value change curve can also be obtained respectively according to the pressure value and the gas flow value, and converted to obtain the first value
  • a difference change curve is obtained according to the first value change curve and the second value change curve, and then the respiratory phase of the patient is determined according to the difference change curve.
  • the graph on the upper left of Figure 4 is a graph of the changes in the pressure value and gas flow value in the breathing circuit caused by the adjustment of the output flow and output pressure of the ventilation therapy equipment, and the graph on the lower left of Figure 4 is the graph of the patient's respiratory rate.
  • the graph shown on the left side of Fig. 5 is obtained.
  • the straight line in the figure is the first value after conversion, and the curve is the second value.
  • the respiratory phase of the patient is determined from the difference curve.
  • the portion of the difference curve above the horizontal axis is the inspiratory phase, and the portion of the difference curve below the horizontal axis is the expiratory phase.
  • the embodiment of the present application provides a respiratory phase determination device, which is applied to the ventilation therapy equipment, the ventilation therapy equipment includes a breathing circuit, and the device includes:
  • the obtaining module is used to obtain the gas flow value in the breathing circuit and the pressure value of the pressure sensor; the pressure sensor is used to collect the pressure in the breathing circuit;
  • the conversion module is used to convert the gas flow value and the pressure value into the first value and the second value under the same benchmark;
  • a determining module configured to determine the current respiratory phase of the patient according to the difference between the first value and the second value.
  • the difference determines the patient's current respiratory phase.
  • the first value and the second value are converted values, which are the values under the same benchmark, so the first value and the second value can be subtracted to obtain the difference related to the patient's breathing factor, so as to judge according to the difference
  • the patient's current respiratory phase That is to say, only the pressure value and the gas flow value of the breathing circuit can be used to judge the respiratory phase of the patient without adding additional auxiliary judgment equipment, which simplifies the structure of the ventilation therapy device.
  • the device in this embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal.
  • the device may be a mobile electronic device or a non-mobile electronic device.
  • the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a handheld computer, a vehicle electronic device, a wearable device, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a netbook or a personal digital assistant (personal digital assistant).
  • non-mobile electronic devices can be servers, network attached storage (Network Attached Storage, NAS), personal computer (personal computer, PC), television (television, TV), teller machine or self-service machine, etc., this application Examples are not specifically limited.
  • Network Attached Storage NAS
  • personal computer personal computer, PC
  • television television
  • teller machine or self-service machine etc.
  • the device in this embodiment of the present application may be a device with an operating system.
  • the operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in this embodiment of the present application.
  • the device provided in the embodiment of the present application can realize each process implemented in the method embodiment in the figure, and to avoid repetition, details are not repeated here.
  • FIG. 7 is a structural block diagram of an electronic device provided by an embodiment of the present application.
  • the embodiment of the present application also provides an electronic device M00, including a processor M01, a memory M02, a program or instruction stored in the memory M02 and operable on the processor M01, the program or instruction When executed by the processor M01, each process of the above method embodiment can be realized, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.
  • the electronic devices in the embodiments of the present application include the above-mentioned mobile electronic devices and non-mobile electronic devices.
  • FIG. 8 is a schematic diagram of a hardware structure of an electronic device implementing an embodiment of the present application.
  • the electronic device 1000 includes, but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, and a processor 1010, etc. part.
  • the electronic device 1000 can also include a power supply (such as a battery) for supplying power to various components, and the power supply can be logically connected to the processor 1010 through the power management system, so as to manage charging, discharging and power consumption through the power management system. Management and other functions.
  • a power supply such as a battery
  • the structure of the electronic device shown in FIG. 8 does not constitute a limitation to the electronic device.
  • the electronic device may include more or fewer components than shown in the figure, or combine some components, or arrange different components, and details will not be repeated here. .
  • the input unit 1004 may include a graphics processor (Graphics Processing Unit, GPU) 10041 and a microphone 10042, and the graphics processor 10041 is used for the image capture device (such as the image data of the still picture or video obtained by the camera) for processing.
  • the display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 1007 includes a touch panel 10071 and other input devices 10072 .
  • the touch panel 10071 is also called a touch screen.
  • the touch panel 10071 may include two parts, a touch detection device and a touch controller.
  • Other input devices 10072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, and joysticks, which will not be repeated here.
  • the memory 1009 can be used to store software programs as well as various data, including but not limited to application programs and operating systems.
  • Processor 1010 may integrate an application processor and a modem processor, wherein the application processor mainly processes operating systems, user interfaces, and application programs, and the modem processor mainly processes wireless communications. It can be understood that the foregoing modem processor may not be integrated into the processor 1010 .
  • the embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, each process of the above-mentioned method embodiment is realized, and the same technology can be achieved. Effect, in order to avoid repetition, will not repeat them here.
  • the processor is the processor in the electronic device described in the above embodiments.
  • the readable storage medium includes computer readable storage medium, such as computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.
  • the embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above method embodiments , and can achieve the same technical effect, in order to avoid repetition, it will not be repeated here.
  • chips mentioned in the embodiments of the present application may also be called system-on-chip, system-on-chip, system-on-a-chip, or system-on-a-chip.

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Abstract

本申请实施例提供了一种呼吸相确定方法、装置，涉及医疗器械技术领域，旨在解决呼吸相确定需要增加额外的装置，结构复杂的技术问题。所述方法包括：获取所述呼吸管路中的气体流量值，以及获取压力传感器的压力值；所述压力传感器用于采集所述呼吸管路中的压力；将所述气体流量值和所述压力值，转换为同一基准下的第一值和第二值；根据所述第一值和所述第二值之间的差值，确定患者当前的呼吸相。由此可以通过呼吸管路的气体流量值和压力值确定患者的呼吸相。

Description

呼吸相确定方法、装置
相关申请的交叉引用
本公开要求在2021年12月31日提交中国专利局、申请号为202111678010.7、名称为“呼吸相确定方法、装置”的专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本申请实施例涉及医疗器械技术领域，尤其涉及一种呼吸相确定方法、一种呼吸相确定装置、一种电子设备以及一种可读存储介质。
背景技术
通气治疗设备通过一根插入患者鼻腔的鼻氧管持续不断地提供氧气。患者的呼吸过程分为吸气和呼气两个过程，在吸气过程患者需要吸入大量氧气，而在呼气过程则不需要氧气。因此需要实时识别患者的呼吸相(吸气或呼气)，以根据呼吸相调节供氧量。
由于鼻氧管属于开放式气路，设备采集的鼻氧管内的气体流量值和压力值很难直接反应患者本身的呼吸情况，因此目前对于呼吸相的识别通常会再增加一种额外的测量方式。常见的有从鼻氧管处再引出一路压力测量管路，通过直接测量鼻氧管内部压力的变化对呼吸相进行判断；或是通过热敏、胸腹带等方式对患者的呼吸情况进行测量，从而判断呼吸相。然而，这两种方式均需要增加额外的装置，结构复杂。
发明内容
本申请实施例提供一种呼吸相确定方法、装置、电子设备以及可读存储介质，用以解决呼吸相确定需要增加额外的装置，结构复杂的技术问题。
第一方面，本申请实施例提供了一种呼吸相确定方法，应用于通气治疗设备，所述通气治疗设备包括呼吸管路，所述方法包括：
获取所述呼吸管路中的气体流量值，以及获取压力传感器的压力值；所述压力传感器用于采集所述呼吸管路中的压力；
将所述气体流量值和所述压力值，转换为同一基准下的第一值和第二值；
根据所述第一值和所述第二值之间的差值，确定患者当前的呼吸相。
可选地，所述将所述气体流量值和所述压力值，转换为同一基准下的第一值和第二值，包括：
将所述气体流量值和所述压力值，转换为同一物理量下的第一值和第二值。
可选地，所述将所述气体流量值和所述压力值，转换为同一物理量下的第一值和第二值，包括：
将所述气体流量值转化为压力物理量下的第一值，以及将所述压力值作为所述第二值。
可选地，所述将所述气体流量值转化为压力物理量下的第一值，包括：
将所述气体流量值的平方与所述通气治疗设备的气阻系数相乘，获得压力物理量下的所述第一值。
可选地，所述将所述气体流量值和所述压力值，转换为同一物理量下的第一值和第二值，包括：
将所述压力值转化为流量物理量下的第二值，以及将所述气体流量值作为所述第一值。
可选地，所述将所述压力值转化为流量物理量下的第二值，包括：
将所述压力值除以所述通气治疗设备的气阻系数，获得中间值；
对所述中间值进行开方，获得流量物理量下的所述第二值。
可选地，所述将所述气体流量值和所述压力值，转换为同一基准下的第一值和第二值，包括：
将所述气体流量值按比例缩放后作为第一值，将所述压力值作为第二值；
或，将所述压力值按比例缩放后作为第二值，将所述气体流量值作为第一值。
可选地，所述根据所述第一值和所述第二值之间的差值，确定患者当前的呼吸相，包括：
将所述第一值减去所述第二值，获得第一差值；
根据所述第一差值确定患者当前的呼吸相。
可选地，所述根据所述第一差值确定患者当前的呼吸相，包括：
在所述第一差值大于0时，确定呼吸相为吸气相；
在所述第一差值小于0时，确定呼吸相为呼气相。
第二方面，本申请实施例提供了一种呼吸相确定装置，应用于通气治疗设备，所述通气治疗设备包括呼吸管路，所述装置包括：
获取模块，用于获取所述呼吸管路中的气体流量值，以及获取压力传感器的压力值；所述压力传感器用于采集所述呼吸管路中的压力；
转换模块，用于将所述气体流量值和所述压力值，转换为同一基准下的第一值和第二值；
确定模块，用于根据所述第一值和所述第二值之间的差值，确定患者当前的呼吸相。
第三方面，本申请实施例提供了一种电子设备，包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现所述的方法。
第四方面，本申请实施例提供了一种可读存储介质，所述可读存储介质存储程序或指令，所述程序或指令被处理器执行时实现所述的方法。
本申请实施例中，通过获取呼吸管路的压力值和气体流量值，并将压力值和气体流量值转换为同一基准下的第一值和第二值，根据第一值和第二值的差值确定患者当前的呼吸相。第一值和第二值为经过转换后得到的值，为同一基准下的值，因此可以将第一值和第二值相减以得到与患者呼吸因素相关的差值，从而根据差值判断患者当前的呼吸相。也就是说，只需要利用呼吸管路的压力值和气体流量值即可判断患者的呼吸相，而不需要增加额外的辅助判断设备，简化了通气治疗设备的结构。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对本发明实施例的描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的一种呼吸相确定方法的步骤流程图；
图2为本申请实施例中患者呼吸带来的传感器信号变化曲线图；
图3为本申请实施例中通气治疗设备调节带来的传感器信号变化曲线图；
图4为本申请实施例中图2中的曲线图和图3中的曲线图与传感器信号图的关系图；
图5为本申请实施例中第一值和第二值的曲线图以及差值的曲线图；
图6为本申请实施例中传感器信号图滤波前后的对比图；
图7为本申请实施例中电子设备的示意图一；
图8为本申请实施例中电子设备的示意图二。
具体实施例
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
下面结合附图对本申请实施例中的呼吸相确定方法、装置、电子设备及可读存储介质进行详细说明。
第一方面，本申请实施例提供了一种呼吸相确定方法，应用于通气治疗设备，如图1所示，所述方法包括如下步骤：
步骤101，获取呼吸管路中的气体流量值，以及获取压力传感器的压力值；压力传感器用于采集呼吸管路中的压力；
本申请实施例中的通气治疗设备可以包括设备本体、呼吸管路、患者接口、流量传感器以及压力传感器。设备本体用于输出预设压力、预设流量的气体，设备本体包括出气口。呼吸管路包括相互连通的第一端和第二端，呼吸管路的第一端与出气口连通，第二端与患者接口连通。患者接口用于佩戴在患者鼻腔处，当患者接口佩戴在患者鼻腔时，患者接口与患者鼻腔之间设置有出气间隙。压力传感器用于获取呼吸管路内的压力值，流量传感器用于获取呼吸管路内的气体流量值。
具体应用时可以利用流量传感器获取呼吸管路内的气体流量值，利用压力传感器获取呼吸管路中的压力值。
步骤102，将气体流量值和压力值，转换为同一基准下的第一值和第二值；
患者呼吸可以导致呼吸管路内的压力值和气体流量值发生改变，同样通气治疗设备的输出压力和输出流量调节后也会导致呼吸管路内的压力值和气体流量值发生改变，也就是说获取的压力值和气体流量值是患者呼吸和通气治疗设备共同作用的结果。
如图2所示，患者吸气时会吸入大量气体，因此会导致呼吸管路内的压 力值降低，气体流量值升高；患者呼气时会导致呼吸管路内的压力值升高，气体流量值降低。即患者呼吸导致的压力值和气体流量值的变化是反向的，压力值降低，气体流量值升高；压力升高，气体流量值降低。
如图3所示，通气治疗设备的输出流量增大时，获取的呼吸管路内的压力值升高，气体流量值升高；通气治疗设备的输出流量减小时，获取的呼吸管路内的压力值降低，气体流量值降低。即通气治疗设备导致的压力值和气体流量值的变化是同向的，压力值降低，气体流量值降低；压力值升高，气体流量值升高。
压力值和气体流量值如果用公式标示的话：压力值＝患者呼吸因素带来的压力值变化+通气治疗设备因素带来的压力值变化；气体流量值＝患者呼吸因素带来的气体流量值变化+通气治疗设备因素带来的气体流量值变化。如果将压力值或气体流量值升高定义为正，降低定义为负，由于患者呼吸导致的压力值和气体流量值的变化是反向的，因此两个公式中患者呼吸因素的符号相反；而通气治疗设备导致的压力值和气体流量值的变化是同向的，因此两个公式中通气治疗设备因素的符号是相同的。由此可以通过将两个公式相减来消除通气治疗设备因素带来的变化。
由于压力值和气体流量值属于不同量纲的物理量，且数值大小也有差异，因此两个公式不能直接相减，需要进行转换。将气体流量值和压力值转换为同一基准下的第一值和第二值。
同一基准既可以指第一值和第二值属于相同量纲的物理量，也可以指第一值和第二值的均值在预定范围内。
具体应用时，可以以压力值为基准，将气体流量值转换为与压力值同一基准的值；也可以以气体流量值为基准，将压力值转换为与气体流量值同一基准的值；还可以将压力值和气体流量值转换为另一个相同的基准。
步骤103，根据第一值和第二值之间的差值，确定患者当前的呼吸相。
由上述的公式可以知道，将转换后的第一值和第二值相减后，得到的差值只与患者呼吸因素带来的变化相关，因此可以根据差值确定患者当前的呼吸相。
本申请实施例中，通过获取呼吸管路的压力值和气体流量值，并将压力值和气体流量值转换为同一基准下的第一值和第二值，根据第一值和第二值的 差值确定患者当前的呼吸相。第一值和第二值为经过转换后得到的值，为同一基准下的值，因此可以将第一值和第二值相减以得到与患者呼吸因素相关的差值，从而根据差值判断患者当前的呼吸相。也就是说，只需要利用呼吸管路的压力值和气体流量值即可判断患者的呼吸相，而不需要增加额外的辅助判断设备，简化了通气治疗设备的结构。
可选地，在本申请一种实施例中，步骤102中将气体流量值和压力值，转换为同一基准下的第一值和第二值，包括：
将气体流量值和压力值，转换为同一物理量下的第一值和第二值。
通常来讲，气路中气体流量值和压力值满足以下公式：
P＝μ×F^2
其中，P为压力值，F为气体流量值，μ为气阻系数，是通气治疗设备的固有参数，可以通过实验提前测定，也可在运行过程中迭代计算。
因此可知，获取的压力值和气体流量值可以通过上述公式进行转换，从而得到处于同一物理量下的第一值和第二值,以将第一值和第二值相减得到与患者呼吸相关的差值。
可选地，在本申请一种实施例中，将气体流量值和压力值，转换为同一物理量下的第一值和第二值，包括：
将压力值转化为流量物理量下的第二值，以及将气体流量值作为第一值。
获取的压力值通过上述公式进行转换，从而得到流量物理量下的第二值,以将第一值和第二值相减得到与患者呼吸相关的差值。
进一步地，将压力值转化为流量物理量下的第二值，包括：
将压力值除以通气治疗设备的气阻系数，获得中间值；
对中间值进行开方，获得流量物理量下的第二值。
具体应用时，将压力值除以气阻系数得到中间值，中间值为气体流量值的平方，然后对中间值进行开方，获得流量物理量下的第二值。
获取的压力值通过上述公式进行转换，从而得到流量物理量下的第二值,以将第一值和第二值相减得到与患者呼吸相关的差值。
可选地，在本申请一种实施例中，将气体流量值和压力值，转换为同一物理量下的第一值和第二值，包括：
将气体流量值转化为压力物理量下的第一值，以及将压力值作为第二值。
获取的气体流量值通过上述公式进行转换，从而得到压力物理量下的第一值,以将第一值和第二值相减得到与患者呼吸相关的差值。
可选地，在本申请一种实施例中，将气体流量值转化为压力物理量下的第一值，包括：
将压力值的平方与通气治疗设备的气阻系数相乘，获得压力物理量下的第一值。
获取的压力值通过上述公式进行转换，从而得到流量物理量下的第二值,以将第一值和第二值相减得到与患者呼吸相关的差值。
需要说明的是，上述实施例中，将气体流量值转换为压力值以及将压力值转换为气体流量值，可以不计算出精确的数值，只需要计算得到的第一值和第二值能够反应出数值的大概变化规律即可。例如，在将气体流量值转换为压力值时，气体流量值转换出的压力值P＝患者呼吸因素带来的气体流量值变化的平方+通气治疗设备因素带来的气体流量值变化的平方±2*患者呼吸因素带来的气体流量值变化*通气治疗设备因素带来的气体流量值变化，而本申请实施例中采用约数：气体流量值转换出的压力值P＝患者呼吸因素带来的气体流量值变化的平方+通气治疗设备因素带来的气体流量值变化的平方，这样可以降低计算难度。
可选地，在本申请一种实施例中，将气体流量值和压力值，转换为同一基准下的第一值和第二值，包括：
将气体流量值按比例缩放后作为第一值，将压力值作为第二值；
或，将压力值按比例缩放后作为第二值，将气体流量值作为第一值。
具体应用时，放大比例和缩小比例可以根据实际情况灵活选取。例如，获取患者至少一个呼吸周期采集的气体流量值和压力值，将气体流量值求平均数得到第一均数，将压力值求平均数得到第二均数，放大比例和缩小比例可以为第一均数和第二均数的比值。
将气体流量值或压力值按比例缩放后，气体流量值和压力值处于同一基准下，因此可以将第一值和第二值相减得到与患者呼吸相关的差值，从而根据差值确定患者的呼吸相。
可选地，在本申请一些实施例中，根据第一值和第二值之间的差值，确定患者当前的呼吸相，包括：
将第一值减去第二值，获得第一差值；
根据第一差值确定患者当前的呼吸相。
由于患者呼吸导致的压力值和气体流量值的变化是反向的，而通气治疗设备导致的压力值和气体流量值的变化是同向的，由此可以通过将第一值减去第二值来消除通气治疗设备因素带来的变化，得到与患者呼吸相关的第一差值，并根据第一差值判断患者的呼吸相。
可选地，在本申请一种实施例中，根据第一差值确定患者当前的呼吸相，包括：
在第一差值大于0时，确定呼吸相为吸气相；
在第一差值小于0时，确定呼吸相为呼气相。
需要说明的是，上述实施例中对压力值和气体流量值进行处理的过程中，也可以根据压力值和气体流量值分别获得压力值变化曲线和气体流量值变化曲线，并转换得到第一值变化曲线和第二值变化曲线，根据第一值变化曲线和第二值变化曲线得到差值变化曲线，然后根据差值变化曲线确定患者的呼吸相。
为便于理解，下面以通气治疗设备处于恒流量模式进行说明。如图4所示，图4左上的曲线图为通气治疗设备通过调节输出流量和输出压力导致的呼吸管路内的压力值和气体流量值变化的曲线图，图4左下的曲线图为患者呼吸导致的呼吸管路内的压力值和气体流量值变化的曲线图，图4右侧图为通过传感器等装置获取的呼吸管路内的气体流量值曲线和压力值曲线。
将气体流量值转换为压力值后得到图5左侧所示的曲线图，图中直线为转换后的第一值，曲线为第二值。将图5左侧图中两条曲线相减，即第一值和第二值相减得到图5右侧的差值曲线。根据差值曲线确定患者的呼吸相。
差值曲线中位于横轴上方的部分为吸气相，差值曲线中位于横轴下方的部分为呼气相。
其中，在获取气体流量值和压力值时，由于采集的信号信噪比较低，往往含有高频噪音，而我们关心的呼吸信号频率往往是低于1Hz的，因此如图6所示，可以先将信号做滤波处理，使用低通滤波器滤除高频信号，得到较为干净的信号。
第二方面，本申请实施例提供了一种呼吸相确定装置，应用于通气治疗设 备，通气治疗设备包括呼吸管路，装置包括：
获取模块，用于获取呼吸管路中的气体流量值，以及获取压力传感器的压力值；压力传感器用于采集呼吸管路中的压力；
转换模块，用于将气体流量值和压力值，转换为同一基准下的第一值和第二值；
确定模块，用于根据第一值和第二值之间的差值，确定患者当前的呼吸相。
本申请实施例中，通过获取呼吸管路的压力值和气体流量值，并将压力值和气体流量值转换为同一基准下的第一值和第二值，根据第一值和第二值的差值确定患者当前的呼吸相。第一值和第二值为经过转换后得到的值，为同一基准下的值，因此可以将第一值和第二值相减以得到与患者呼吸因素相关的差值，从而根据差值判断患者当前的呼吸相。也就是说，只需要利用呼吸管路的压力值和气体流量值即可判断患者的呼吸相，而不需要增加额外的辅助判断设备，简化了通气治疗设备的结构。
本申请实施例中的装置可以是装置，也可以是终端中的部件、集成电路、或芯片。该装置可以是移动电子设备，也可以为非移动电子设备。示例性的，移动电子设备可以为手机、平板电脑、笔记本电脑、掌上电脑、车载电子设备、可穿戴设备、超级移动个人计算机(ultra-mobile personal computer，UMPC)、上网本或者个人数字助理(personal digital assistant，PDA)等，非移动电子设备可以为服务器、网络附属存储器(Network Attached Storage，NAS)、个人计算机(personal computer，PC)、电视机(television，TV)、柜员机或者自助机等，本申请实施例不作具体限定。
本申请实施例中的装置可以为具有操作系统的装置。该操作系统可以为安卓(Android)操作系统，可以为iOS操作系统，还可以为其他可能的操作系统，本申请实施例不作具体限定。
本申请实施例提供的装置能够实现图中方法实施例实现的各个过程，为避免重复，这里不再赘述。
图7本申请实施例提供的电子设备的结构框图。
如图7所示，本申请实施例还提供一种电子设备M00，包括处理器M01，存储器M02，存储在存储器M02上并可在所述处理器M01上运行的程序或指令，该程序或指令被处理器M01执行时实现上述方法实施例的各个过程， 且能达到相同的技术效果，为避免重复，这里不再赘述。
需要说明的是，本申请实施例中的电子设备包括上述所述的移动电子设备和非移动电子设备。
图8为实现本申请实施例的一种电子设备的硬件结构示意图。
该电子设备1000包括但不限于：射频单元1001、网络模块1002、音频输出单元1003、输入单元1004、传感器1005、显示单元1006、用户输入单元1007、接口单元1008、存储器1009、以及处理器1010等部件。
本领域技术人员可以理解，电子设备1000还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理系统与处理器1010逻辑相连，从而通过电源管理系统实现管理充电、放电以及功耗管理等功能。图8中示出的电子设备结构并不构成对电子设备的限定，电子设备可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，在此不再赘述。
应理解的是，本申请实施例中，输入单元1004可以包括图形处理器(Graphics Processing Unit，GPU)10041和麦克风10042，图形处理器10041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元1006可包括显示面板10061，可以采用液晶显示器、有机发光二极管等形式来配置显示面板10061。用户输入单元1007包括触控面板10071以及其他输入设备10072。触控面板10071，也称为触摸屏。触控面板10071可包括触摸检测装置和触摸控制器两个部分。其他输入设备10072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。存储器1009可用于存储软件程序以及各种数据，包括但不限于应用程序和操作系统。处理器1010可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器1010中。
本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
其中，所述处理器为上述实施例中所述的电子设备中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器(Read-Only  Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等。
本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现上述方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片、系统芯片、芯片系统或片上系统芯片等。
最后，还需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者终端设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者终端设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者终端设备中还存在另外的相同要素。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本申请的保护范围之内。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (12)

  1. 一种呼吸相确定方法，其特征在于，应用于通气治疗设备，所述通气治疗设备包括呼吸管路，所述方法包括：
    获取所述呼吸管路中的气体流量值，以及获取压力传感器的压力值；所述压力传感器用于采集所述呼吸管路中的压力；
    将所述气体流量值和所述压力值，转换为同一基准下的第一值和第二值；
    根据所述第一值和所述第二值之间的差值，确定患者当前的呼吸相。
  2. 根据权利要求1所述的方法，其特征在于，所述将所述气体流量值和所述压力值，转换为同一基准下的第一值和第二值，包括：
    将所述气体流量值和所述压力值，转换为同一物理量下的第一值和第二值。
  3. 根据权利要求2所述的方法，其特征在于，所述将所述气体流量值和所述压力值，转换为同一物理量下的第一值和第二值，包括：
    将所述气体流量值转化为压力物理量下的第一值，以及将所述压力值作为所述第二值。
  4. 根据权利要求3所述的方法，其特征在于，所述将所述气体流量值转化为压力物理量下的第一值，包括：
    将所述气体流量值的平方与所述通气治疗设备的气阻系数相乘，获得压力物理量下的所述第一值。
  5. 根据权利要求2或3所述的方法，其特征在于，所述将所述气体流量值和所述压力值，转换为同一物理量下的第一值和第二值，包括：
    将所述压力值转化为流量物理量下的第二值，以及将所述气体流量值作为所述第一值。
  6. 根据权利要求5所述的方法，其特征在于，所述将所述压力值转化为流量物理量下的第二值，包括：
    将所述压力值除以所述通气治疗设备的气阻系数，获得中间值；
    对所述中间值进行开方，获得流量物理量下的所述第二值。
  7. 根据权利要求1或2所述的方法，其特征在于，所述将所述气体流量值和所述压力值，转换为同一基准下的第一值和第二值，包括：
    将所述气体流量值按比例缩放后作为第一值，将所述压力值作为第二值；
    或，将所述压力值按比例缩放后作为第二值，将所述气体流量值作为第一值。
  8. 根据权利要求1的方法，其特征在于，所述根据所述第一值和所述第二值之间的差值，确定患者当前的呼吸相，包括：
    将所述第一值减去所述第二值，获得第一差值；
    根据所述第一差值确定患者当前的呼吸相。
  9. 根据权利要求8所述的方法，其特征在于，所述根据所述第一差值确定患者当前的呼吸相，包括：
    在所述第一差值大于0时，确定呼吸相为吸气相；
    在所述第一差值小于0时，确定呼吸相为呼气相。
  10. 一种呼吸相确定装置，其特征在于，应用于通气治疗设备，所述通气治疗设备包括呼吸管路，所述装置包括：
    获取模块，用于获取所述呼吸管路中的气体流量值，以及获取压力传感器的压力值；所述压力传感器用于采集所述呼吸管路中的压力；
    转换模块，用于将所述气体流量值和所述压力值，转换为同一基准下的第一值和第二值；
    确定模块，用于根据所述第一值和所述第二值之间的差值，确定患者当前的呼吸相。
  11. 一种电子设备，其特征在于，包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求1-9任一项所述的方法。
  12. 一种可读存储介质，其特征在于，所述可读存储介质存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1-9任一项所述的方法。
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