Electrically controlled inhalation system and breathing machine

Abstract

The utility model provides a kind of electric control suction system and breathing machine.Electric control suction system includes: first oxygen module, for inhaling first oxygen;Second oxygen module, for inhaling second oxygen;Air unit, for inhaling ambient air;Driving part, with air unit connection;Venturi's power flow inlet is connected with first oxygen module, and Venturi's negative pressure port is connected with air unit;Mixing unit, with first oxygen module, second oxygen module and air unit connection, to mix first oxygen, second oxygen, ambient air after input patient respiratory tract;Electric control suction system includes first working mode and second working mode;In first working mode, driving part drives air unit to inhale ambient air, and first oxygen module stops working;In second working mode, driving part stops working, and negative pressure port inhales ambient air.The utility model is under second working mode, without driving part power consumption, still can output different target oxygen concentration gas.

Description

Technical Field

[0001] This utility model relates to the field of ventilator technology, and in particular to an electric and electronically controlled inhalation system and ventilator. Background Technology

[0002] In related technologies, the inhalation system of an electric and electronically controlled ventilator generally includes an oxygen path and an air path. The oxygen path is usually connected to a high-pressure oxygen source, and the air path is usually driven by a turbine fan to draw in air. After the oxygen and air are mixed, they enter the inhalation module and then enter the patient's lungs.

[0003] Electric and electronically controlled air intake systems use turbine fans to draw in air, eliminating the need for a high-pressure air source. As a result, they are smaller and more portable, and are commonly used in transport and emergency situations, such as battlefield rescue and long-distance transport.

[0004] In the process of developing this application, the inventors discovered that in the above-mentioned scenarios, battery power is often used, which can lead to power shortages. Furthermore, the high power consumption of the turbine fan makes it easy for the battery to run out of power, preventing the electric ventilator from working for extended periods and thus hindering the delivery of gas with varying oxygen concentrations to the patient. Utility Model Content

[0005] This application provides an electric and electrically controlled inhalation system and a ventilator to solve the problem that existing electric and electrically controlled inhalation systems cannot provide gases with different oxygen concentrations for extended periods.

[0006] To solve the above-mentioned technical problems, this application is implemented as follows: An embodiment of the first aspect of this application discloses an electric and electronically controlled inhalation system, the electric and electronically controlled inhalation system comprising: a first oxygen module for inhaling first oxygen; The second oxygen module is used for inhaling a second oxygen; An air unit is used to draw in ambient air; The driving component is connected to the air unit; The venturi tube has a power flow inlet and a negative pressure outlet. The power flow inlet is connected to the first oxygen module, and the negative pressure outlet is connected to the air unit. The first oxygen module generates a negative pressure at the negative pressure outlet so as to draw in ambient air from the air unit through the negative pressure outlet. The mixing unit is connected to both the second oxygen module and the air unit to mix the second oxygen and the ambient air to a target oxygen concentration before introducing them into the patient's respiratory tract. The driving component is connected to the air unit; The electric and electronically controlled air intake system includes a first working mode and a second working mode; In the first working mode, the driving component is working, the first oxygen module stops working, and the driving component drives the air unit to draw in the ambient air; In the second operating mode, the drive unit stops working, the first oxygen module works, and the first oxygen enters the power flow inlet to generate negative pressure, so as to draw in the ambient air from the negative pressure port.

[0007] Optionally, the mixing unit includes an oxygen-mixing noise-reducing airway; The air outlet of the air unit and the air outlet of the second oxygen module are both connected to the air inlet of the oxygen-mixing noise reduction air duct. The air outlet of the oxygen-mixing noise reduction air duct is connected to the air inlet of the drive unit and the negative pressure port. The oxygen mixing and noise reduction airway is used to mix the gas evenly and reduce the noise of the drive unit and the negative pressure port during operation.

[0008] Optionally, the venturi tube further includes a discharge port; In the first working mode, the driving unit drives the ambient air through the air unit and into the oxygen-mixing noise reduction airway, and the second oxygen enters the oxygen-mixing noise reduction airway. After the ambient air and the second oxygen are mixed in the oxygen-mixing noise reduction airway to the target oxygen concentration, they are then introduced into the patient's respiratory tract through the driving unit. In the second working mode, the second oxygen enters the power flow inlet and the oxygen mixing and noise reduction airway. The ambient air and the second oxygen entering the oxygen mixing and noise reduction airway are mixed in the oxygen mixing and noise reduction airway and then enter the negative pressure port. The exhaust port outputs the mixed gas with the target oxygen concentration and inputs it into the patient's respiratory tract.

[0009] Optionally, the electric control intake system further includes a Venturi valve, which is connected to the exhaust port and used to control the opening and closing of the exhaust port.

[0010] Optionally, the electric control suction system further includes a second one-way valve, the inlet end of which is connected to the outlet end of the drive unit.

[0011] Optionally, the electric inhalation system further includes an inhalation unit, which includes a second flow sensor, an inhalation pressure sensor, an oxygen concentration sensor, a safety valve, an emergency inhalation valve, a third one-way valve, and an inhalation port for the patient to inhale, all connected in sequence. The outlet of the second one-way valve and the outlet of the Venturi valve are both connected to the inlet of the second flow sensor.

[0012] Optionally, the electric-controlled inhalation system further includes a control unit, wherein the first oxygen module, the second oxygen module, the air unit, and the drive unit are all connected to the control unit. The control unit is used to adjust the flow rates of the first oxygen module and the second oxygen module, as well as the output power of the drive unit, so that the gas entering the patient's respiratory tract is at the target oxygen concentration, and to switch the electric-controlled inhalation system between the first operating mode and the second operating mode.

[0013] Optionally, the electric and electronically controlled breathing system further includes an oxygen supply unit, the oxygen supply unit having a first air inlet for connecting to an oxygen source, and the air inlet of the first oxygen module and the air inlet of the second oxygen module being connected to the air outlet of the oxygen supply unit. The first air inlet is connected to a first pressure sensor to monitor the pressure at the first air inlet; The first oxygen module includes a first proportional valve to regulate the flow rate of the first oxygen; The second oxygen module includes a second proportional valve to regulate the flow rate of the second oxygen; Optionally, the electric and electronically controlled suction system further includes a power supply system, which includes a battery, a power meter, and a voltage conversion module. The voltage conversion module is connected to the drive unit and the battery to convert the voltage output by the battery and deliver the converted voltage to the drive unit. The power meter is connected to the battery to monitor the battery's charge level. The driving component is equipped with a temperature sensor, which is used to monitor the temperature of the driving component. The control unit is used to adjust the opening degree of the first proportional valve and the second proportional valve according to the target oxygen concentration, power monitoring meter, temperature sensor and first pressure sensor, and to adjust the output power of the drive unit.

[0014] An embodiment of the second aspect of this application discloses a ventilator, which includes any of the above-described electrically controlled inhalation systems.

[0015] In this embodiment, by setting up a first oxygen module and a venturi tube, and connecting the first oxygen module to the power flow inlet of the venturi tube, the first oxygen flows into the venturi tube. Under the action of the venturi principle, a negative pressure is generated at the negative pressure port, drawing ambient air into the air unit. Thus, even after the drive unit stops working, the electric-controlled inhalation system can still operate in the second working mode, and ambient air can still enter the air unit, allowing the first oxygen and ambient air to mix. This enables the electric-controlled inhalation system to provide the gas containing the mixture of first oxygen and ambient air for an extended period, expanding the range of oxygen concentration provided. Furthermore, by setting up a second oxygen module and a mixing unit, and connecting the mixing unit to the first oxygen module, the second oxygen module, and the air unit, the first oxygen, the second oxygen, and ambient air can be mixed to the target oxygen concentration before being introduced into the patient's respiratory tract, further expanding the range of the target oxygen concentration when the drive unit stops working.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the first type of electric and electronically controlled intake system in the embodiments of this application; Figure 2 This is a schematic diagram of the second type of electric and electronically controlled intake system in the embodiments of this application; Figure 3 This is a schematic diagram of the third type of electric and electronically controlled intake system in the embodiments of this application.

[0018] Figure label: 100. First oxygen module; 101. First pipeline; 11. First proportional valve; 200. Second oxygen module; 201. Second pipeline; 10. Second proportional valve; 300. Oxygen supply unit; 301. Third pipeline; 1. First air inlet; 3. Oxygen filter; 6. First pressure sensor; 8. Oxygen pressure reducing valve; 9. First flow sensor; 400. Air unit; 2. Second air inlet; 401. Fourth pipeline; 402. Air filter assembly; 4. Primary air filter; 5. Secondary air filter; 7. Negative pressure sensor; 26. First check valve; 500. Inhalation unit; 17. Second flow sensor; 18. Inhalation pressure sensor; 19. Oxygen concentration sensor; 20. Safety valve; 21. Emergency inhalation valve; 22. Third check valve; 23. Inhalation port; 501. Fifth pipeline; 12. Venturi tube; 121. Power flow inlet; 122. Negative pressure port; 123. Discharge port; 14. Mixed oxygen noise reduction airway; 15. Drive unit; 16. Second check valve; 24. Temperature sensor; 25. Venturi on / off valve. Detailed Implementation

[0019] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0020] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0022] The following is combined with Figures 1-3 This application describes an electric and electronically controlled air intake system according to an embodiment.

[0023] refer to Figures 1-3In some embodiments of this application, an electrically controlled inhalation system is proposed, comprising: a first oxygen module 100 for inhaling first oxygen; a second oxygen module 200 for inhaling second oxygen; an air unit 400 for inhaling ambient air; a venturi tube 12 having a power flow inlet 121 and a negative pressure outlet 122, the power flow inlet 121 being connected to the first oxygen module 100, the first oxygen generating a negative pressure at the negative pressure outlet 122 to inhale ambient air from the air unit 400 through the negative pressure outlet 122; and a mixing unit for the second oxygen module 200 and air. Unit 400 is connected to a mixing unit to mix the second oxygen and ambient air to a target oxygen concentration before introducing it into the patient's airway; drive unit 15 is connected to the mixing unit; the electric and electronically controlled inhalation system includes a first working mode and a second working mode; in the first working mode, drive unit 15 is activated, the first oxygen module 100 stops working, and drive unit 15 drives air unit 400 to inhale ambient air; in the second working mode, drive unit 15 stops working, the first oxygen module is activated, and the first oxygen enters the power flow inlet 121 to generate negative pressure so that ambient air is inhaled from the negative pressure port 122.

[0024] In the above embodiments, reference is made to Figures 1-3 By setting up a first oxygen module 100 and a venturi tube 12, and connecting the first oxygen module 100 to the power flow inlet 121 of the venturi tube 12, the first oxygen flows into the venturi tube 12. Under the action of the Venturi principle, a negative pressure is generated at the negative pressure port 122, drawing ambient air into the air unit 400. Thus, even after the drive unit 15 stops working, the electric-controlled inhalation system can still operate in the second working mode, and ambient air can still enter the air unit 400. The first oxygen and ambient air can be mixed, allowing the electric-controlled inhalation system to provide the gas mixed with the first oxygen and ambient air for a longer period of time, expanding the range of oxygen concentration provided. This application further expands the range of target oxygen concentration when the drive unit 15 stops working by setting up a second oxygen module 200 and a mixing unit, and connecting both the second oxygen module 200 and the air unit 400 to the mixing unit. This allows the second oxygen and ambient air to be mixed to the target oxygen concentration before being introduced into the patient's respiratory tract, further expanding the range of target oxygen concentration when the drive unit 15 stops working.

[0025] The inventors of this application discovered during the development of this application that, if the drive unit 15 stops working, the electric-controlled inhalation system generates negative pressure through the first oxygen inlet 121, and the negative pressure port 122 draws in ambient air. At this time, it can only provide the patient with a gas mixture of the first oxygen and ambient air. The maximum oxygen concentration of this gas is denoted as the first oxygen concentration threshold F1, which is usually around 80%. It cannot provide the patient with a gas of higher oxygen concentration or pure oxygen. If a switch valve is installed in the air unit 400 to close the air unit 400, so that the negative pressure port 122 of the venturi tube does not draw in any gas, it will cause pressure imbalance in the venturi tube 12, turbulent airflow, and damage to the switch valve and the venturi tube 12. In the end, not only will pure oxygen not be provided, but the electric-controlled inhalation system will also be easily damaged. To protect the electric-controlled inhalation system from damage, a series of components need to be added, making the electric-controlled inhalation system complex in structure, large in size, and expensive. This application, by setting a second oxygen module 200 and adjusting the ratio of the first oxygen and the second oxygen, can not only make the final output oxygen concentration exceed the first oxygen concentration threshold F1, but also output pure oxygen, thus expanding the range of target oxygen concentration in the second working mode.

[0026] In the above embodiments, both the first oxygen and the second oxygen are high-pressure oxygen, which refers to oxygen with a pressure greater than the atmospheric pressure of the surrounding environment. The first oxygen and the second oxygen can use the same gas source or different gas sources, which is not specifically limited here. For example, the electric and electronically controlled breathing system may also include an oxygen supply unit 300. The oxygen supply unit 300 has a first air inlet 1 for connecting to an oxygen source at its inlet end. The inlet ends of the first oxygen module 100 and the second oxygen module 200 are both connected to the outlet end of the oxygen supply unit 300. The first oxygen module 100 may include a first proportional valve 11, and the second oxygen module 200 may include a second proportional valve 12. Through the oxygen supply unit 300, the first proportional valve 11, and the second proportional valve 12, only one tank of high-pressure oxygen is needed to supply oxygen to the first oxygen module 100 and the second oxygen module 200 separately, reducing the size of the electric and electronically controlled breathing system and lowering the cost.

[0027] For example, the air unit 400 has a second air inlet 2 communicating with ambient air at one end, and is connected to the oxygen mixing and noise reduction air duct 14 at the other end. The air unit 400 also includes a primary air filter 4, a secondary air filter 5, a first one-way valve 26, and a negative pressure sensor 7 connected in sequence; ambient air flows out of the air unit 400 and into the mixing unit after passing through the second air inlet 2, the primary air filter 4, the secondary air filter 5, the first one-way valve 26, and the negative pressure sensor 7 in sequence; the primary air filter 4 is used to initially filter large particulate impurities in the ambient air, the secondary air filter 5 is used to further filter small particulate impurities in the ambient air, and the negative pressure sensor 7 is used to monitor the pressure of the air unit 400 and provide timely reminders when the air unit 400 is blocked.

[0028] In the above embodiments, the mixing unit can be a chamber with mixing function, which can mix the second oxygen and ambient air evenly, and no specific limitation is made here.

[0029] In the above embodiments, reference is made to Figures 1-3 In the first working mode, the first oxygen module 100 stops working, and no first oxygen flows into the power flow inlet 121 of the venturi tube 12. At this time, the negative pressure port 122 does not generate negative pressure, and the oxygen supply unit 300 provides second oxygen to the second oxygen module 200. The driving component 15 drives the air unit 400 to draw in ambient air. The ambient air passes sequentially through the second air inlet 2, the primary air filter 4, the secondary air filter 5, the first one-way valve 26, and the negative pressure sensor 7 into the mixing unit; the second oxygen enters the mixing unit; after the ambient air and the second oxygen are mixed in the mixing unit to the target oxygen concentration, they are sequentially introduced into the patient's respiratory tract through the second flow sensor 17, the inhalation pressure sensor 18, the oxygen concentration sensor 19, the safety valve 20, the emergency inhalation valve 21, the third one-way valve 22, and the inhalation port 23.

[0030] In the above embodiments, reference is made to Figures 1-3 In the second working mode, the drive unit 15 stops working, and the oxygen supply unit 300 provides the first oxygen module 100 with the first oxygen. The first oxygen enters the power flow inlet 121 of the venturi tube 12 and generates negative pressure at the negative pressure port 122, drawing ambient air into the negative pressure port 122. At the same time, the oxygen supply unit 300 provides the second oxygen to the second oxygen module 200. The second oxygen and ambient air are mixed in the mixing unit to the target oxygen concentration, and then enter the venturi tube 12 through the negative pressure port. After being mixed evenly with the first oxygen in the venturi tube 12, it is introduced into the patient's respiratory tract.

[0031] Optionally, refer to Figures 1-3The mixing unit includes an oxygen-mixing noise-reducing airway 14; the outlet of the air unit 400 and the outlet of the second oxygen module 200 are both connected to the inlet of the oxygen-mixing noise-reducing airway 14, and the outlet of the oxygen-mixing noise-reducing airway 14 is connected to the inlet of the drive unit 15 and the negative pressure port 122; the oxygen-mixing noise-reducing airway 14 is used to mix the gas evenly and reduce the noise of the drive unit 15 and the negative pressure port 122 during operation.

[0032] In the above embodiments, in the first operating mode, after the drive unit 15 drives the air unit 400 to draw in ambient air, the ambient air and the second oxygen can be mixed to the target oxygen concentration through the oxygen mixing and noise reduction airway 14 before being introduced into the patient's respiratory tract. The drive unit 15 draws in the ambient air and the second oxygen from the second oxygen module through the oxygen mixing and noise reduction airway 14. Therefore, by adjusting the flow rate of the second oxygen and the output power of the drive unit 15, the ratio of the second oxygen and ambient air entering the oxygen mixing and noise reduction airway 14 can be changed, thereby allowing the gas finally introduced into the patient's respiratory tract to be adjusted within the range of 21%-100%.

[0033] In the above embodiments, reference is made to Figure 1 The flow rate of the first oxygen in the first oxygen module 100 is much greater than the flow rate of the second oxygen in the second oxygen module 200. The function of the second oxygen is to regulate the oxygen concentration of the gas entering the negative pressure port 122, thereby increasing the oxygen concentration of the gas entering the patient's respiratory tract. In the second working mode, when a relatively high oxygen concentration needs to be provided to the patient, the flow rate of the second oxygen can be increased; when a relatively low oxygen concentration needs to be provided to the patient, the flow rate of the second oxygen can be decreased; when pure oxygen needs to be provided to the patient, the pressure of the second oxygen output from the second oxygen module 200 is adjusted so that the pressure of the second oxygen is greater than the pressure of the ambient air, preventing ambient air from entering the air unit 400. The first oxygen enters the Venturi tube 12 through the power flow inlet 121, and the second oxygen enters the Venturi tube 12 through the negative pressure port 122, so that only the first and second oxygen are present in the electric and electronically controlled inhalation system, thereby providing pure oxygen to the patient. It is understandable that, due to the first one-way valve 26, the second oxygen will not escape into the atmosphere through the air unit 400; the first one-way valve 26 can also be replaced by a switch valve. When the switch valve is closed, only the second oxygen enters the negative pressure port 122, and the electric and electronically controlled inhalation system can also supply pure oxygen to the patient.

[0034] In the above embodiments, optionally, reference is made to Figure 1 , Figure 2 , Figure 3The Venturi tube 12 also includes an outlet 123. In the first working mode, the drive unit 15 drives ambient air through the air unit 400 into the oxygen mixing and noise reduction airway 14, and the second oxygen enters the oxygen mixing and noise reduction airway 14. After the ambient air and the second oxygen are mixed in the oxygen mixing and noise reduction airway 14 to the target oxygen concentration, they enter the Venturi tube 12 and are output from the outlet 123. After passing through the drive unit 15, they are introduced into the patient's respiratory tract. In the second working mode, the second oxygen enters the power flow inlet 121 and the oxygen mixing and noise reduction airway 14. After mixing with the ambient air in the oxygen mixing and noise reduction airway 14, it enters the negative pressure port 122. The outlet 123 outputs the mixed gas with the target oxygen concentration and introduces it into the patient's respiratory tract.

[0035] In the above embodiments, optionally, reference is made to Figure 1 The electric and electronically controlled intake system also includes a Venturi valve 25, which is connected to the exhaust port 123 and is used to control the opening and closing of the exhaust port 123.

[0036] In the above embodiments, optionally, reference is made to Figure 1 , Figure 2 The electric and electronically controlled air intake system also includes a second one-way valve 16. The air inlet of the second one-way valve 16 is connected to the air outlet of the drive unit 15, and the air outlet of the second one-way valve 16 is connected to the air inlet of the second flow sensor 17. The second one-way valve 16 is used to make the gas in the drive unit 15 flow in one direction.

[0037] In the above embodiments, optionally, reference is made to Figure 1 , Figure 2 The electric inhalation system also includes an inhalation unit 500, which includes a second flow sensor 17, an inhalation pressure sensor 18, an oxygen concentration sensor 19, a safety valve 20, an emergency inhalation valve 21, a third one-way valve 22, and an inhalation port 23 for the patient to inhale, all connected in sequence. The outlet of the second one-way valve 16 and the outlet of the Venturi valve 25 are both connected to the inlet of the second flow sensor 17.

[0038] Specifically, the inlet end of the inhalation unit 500, i.e., the outlet end of the second flow sensor 17, is connected to the outlet end of the second one-way valve 16. The outlet end of the inhalation unit 500 is provided with an inhalation port 23 for patient inhalation. After the second oxygen and ambient air are mixed to the target oxygen concentration in the mixing unit, they are introduced into the patient's respiratory tract through the inhalation unit 500 and the inhalation port 23. The gas with the target oxygen concentration enters the inhalation unit 500 through the mixing unit, and is then introduced into the patient's respiratory tract in the fifth pipeline 501 via the second flow sensor 17, the inhalation pressure sensor 18, the safety valve 20, the emergency inhalation valve 21, and the inhalation port 23. The second flow sensor 17 is used to monitor the flow rate of the inhalation unit 500; the inhalation pressure sensor 18 is used to monitor the air pressure of the inhalation unit 500; the oxygen concentration sensor 19 is used to monitor the oxygen concentration of the gas in the inhalation unit 500; the safety valve 20 is used to prevent excessive pressure in the patient's lungs and release pressure in a timely manner; the emergency inhalation valve 21 is used to open when the electric inhalation system fails to supply air normally, connecting to the atmosphere to allow air to be inhaled; the third one-way valve 22 is used to allow gas to enter the patient's respiratory tract unidirectionally from the inhalation port 23. In the above embodiments, the driving component 15 can be a turbine fan or a piston drive mechanism, etc., and this application embodiment does not make specific limitations.

[0039] In the above embodiments, reference is made to Figure 3 In the first working mode, the first oxygen module 100 stops working, the first oxygen does not enter the power flow inlet 121, and the negative pressure port 122 does not generate negative pressure due to the Venturi effect; ambient air enters the Venturi tube 12 through the negative pressure port 122, exits from the outlet 123, and is introduced into the patient's respiratory tract; since the outlet of the second oxygen module 200 is connected to the inlet of the oxygen mixing and noise reduction airway 14, the second oxygen also enters the oxygen mixing and noise reduction airway 14, and after mixing with the ambient air to the target oxygen concentration, it enters the Venturi tube 12 and is introduced into the patient's respiratory tract.

[0040] In the above embodiments, reference is made to Figure 3 In the second working mode, the drive unit 15 stops working. Since the power flow inlet 121 is connected to the first oxygen module 100 and the negative pressure port 122 is connected to the outlet of the oxygen mixing and noise reduction airway 14, the first oxygen enters the power flow inlet 121 to generate negative pressure, so that ambient air is drawn in from the negative pressure port 122 through the outlet of the oxygen mixing and noise reduction airway 14. The outlet of the second oxygen module 200 is connected to the inlet of the oxygen mixing and noise reduction airway 14, so the second oxygen first enters the oxygen mixing and noise reduction airway 14, and then enters the venturi tube 12. After mixing with the first oxygen and ambient air to the target oxygen concentration, it is introduced into the patient's respiratory tract.

[0041] In the above embodiments, reference is made to Figure 3The flow rate of the second oxygen in the second oxygen module 200 is less than that of the first oxygen in the first oxygen module 100. The function of the second oxygen is to regulate the oxygen concentration of the gas entering the negative pressure port 122, thereby increasing the oxygen concentration of the gas entering the patient's respiratory tract. When pure oxygen needs to be administered to the patient, the pressure of the second oxygen output from the second oxygen module 200 is adjusted so that the pressure of the second oxygen is greater than the pressure of the ambient air. Ambient air cannot enter the air unit 400. The first oxygen enters the venturi tube 12 through the power flow inlet 121, and the second oxygen enters the venturi tube 12 through the negative pressure port 122. This ensures that only the first and second oxygen are present in the electric and electronically controlled inhalation system, thus providing pure oxygen to the patient. It can be understood that, due to the first one-way valve 26, the second oxygen will not escape into the atmosphere through the air unit 400. Here, the first one-way valve 26 can also be replaced with a switch valve. When the switch valve is closed, only the second oxygen enters the negative pressure port 122, and the electric and electronically controlled inhalation system can also provide pure oxygen to the patient.

[0042] Optionally, the electric-controlled inhalation system also includes a control unit. The first oxygen module 100, the second oxygen module 200, and the drive unit 15 are all connected to the control unit. The control unit is used to adjust the flow rate of the first oxygen module 100 and the second oxygen module 200, as well as the output power of the drive unit 15, so that the gas entering the patient's respiratory tract is at the target oxygen concentration, and to switch the electric-controlled inhalation system between the first working mode and the second working mode.

[0043] For example, in the above embodiments, adjusting the flow rate of the first oxygen module 100, the second oxygen module 200, and the air unit 400 can either adjust the flow rate or adjust the flow rate to 0, causing one or more of the first oxygen module 100 and the second oxygen module 200 to stop working. No specific limitation is made here.

[0044] For example, in the above embodiments, adjusting the output power of the drive unit 15 can either increase or decrease the output power of the drive unit 15 to increase or decrease the flow rate of ambient air entering the air unit 400 driven by the drive unit 15, or it can adjust the output power of the drive unit 15 to 0 to stop the drive unit 15 from working.

[0045] For example, in the above embodiments, the switching between the first working mode and the second working mode can be either set by the electric and electronically controlled air intake system with two options, the first mode and the second mode, for the user to switch manually, or the control unit can switch automatically; no specific limitation is made here.

[0046] Optionally, the electric and electronically controlled breathing system further includes an oxygen supply unit 300. The oxygen supply unit 300 has a first air inlet 1 for connecting to an oxygen source. The air inlets of the first oxygen module 100 and the second oxygen module 200 are both connected to the air outlet of the oxygen supply unit 300. A first pressure sensor 6 is connected to the first air inlet 1 to monitor the pressure of the first air inlet 1. The first oxygen module 100 includes a first proportional valve 11 to regulate the flow rate of the first oxygen. The second oxygen module 200 includes a second proportional valve 10 to regulate the flow rate of the second oxygen.

[0047] In the above embodiments, in the first operating mode, the flow rate of ambient air entering the air unit 400 can be adjusted by regulating the output power of the drive unit 15; the flow rate of the second oxygen in the second oxygen module 200 can be adjusted by regulating the second proportional valve 10; therefore, by adjusting the output power of the drive unit 15, the opening degree of the first proportional valve 11, and the opening degree of the second proportional valve 10, the gas input into the patient's respiratory tract can be adjusted to the target oxygen concentration. In the second operating mode, refer to... Figures 1-3 When the target oxygen concentration is greater than the second oxygen concentration threshold F2, the control unit can adjust the opening of the second proportional valve 10 to adjust the flow rate of the second oxygen, so that the first oxygen, the second oxygen and the ambient air all enter the venturi tube 12 and mix to the target oxygen concentration.

[0048] Optionally, the electric and electronically controlled breathing system also includes a power supply system, which includes a battery, a power meter, and a voltage conversion module. The voltage conversion module is connected to the drive unit 15 and the battery to convert the voltage output by the battery and deliver the converted voltage to the drive unit 15. The power meter is connected to the battery to monitor the battery charge. The drive unit 15 is equipped with a temperature sensor 24 to monitor the temperature of the drive unit 15. The control unit is used to adjust the opening of the first proportional valve 11 and the second proportional valve 10 according to the target oxygen concentration, the power meter, the temperature sensor 24, and the first pressure sensor 6, and to adjust the output power of the drive unit 15.

[0049] In the above embodiments, since the control unit can adjust the opening of the first proportional valve 11 and the second proportional valve 10 according to the target oxygen concentration, the power monitoring meter, the temperature sensor 24 and the first pressure sensor 6, and adjust the output power of the drive unit 15, the control unit can comprehensively adjust the opening of the first proportional valve 11 and the second proportional valve 10 according to the target oxygen concentration, the power of the drive unit 15, the temperature of the drive unit 15 and the pressure of the oxygen source, and adjust the output power of the drive unit 15 so that the gas entering the patient's respiratory tract is at the target oxygen concentration, and control the switching between the first working mode and the second working mode, thereby enabling the electric and electronically controlled inhalation system to supply gas with different oxygen concentrations for a long time.

[0050] Specifically, in the above embodiments, the battery can power all electrical devices in the electric and electronically controlled suction system, including but not limited to the drive unit 15, sensors, actuators, and valves in the system. The battery voltage is converted into different voltages by the voltage conversion module and delivered to the aforementioned electrical devices. The power monitoring meter can be composed of battery voltage acquisition circuitry or coulomb counter circuitry, and the voltage conversion module can be composed of DC-DC (Direct Current) circuitry. This application embodiment does not limit this aspect.

[0051] Specifically, in the above embodiments, reference Figures 1-3 In the first operating mode, the control unit can adjust the oxygen concentration of the gas entering the patient's respiratory tract within the range of 21%-100%. When the opening degree of the second proportional valve 10 is 0, the second oxygen does not enter the second oxygen module 200, and the gas output by the electric and electronically controlled inhalation system is ambient air with an oxygen concentration of approximately 21%. When the opening degree of the second proportional valve 10 is greater than 0, the second oxygen with an oxygen concentration of 100% is drawn into the second proportional valve 10 through the drive member 15. When the flow rate of the second oxygen flowing out of the second proportional valve 10 is greater than or equal to the flow rate generated by the suction force of the drive member 15, the oxygen concentration of the gas entering the patient is 100%, regardless of where the opening degree of the second proportional valve 10 is adjusted between greater than 0 and less than or equal to 100%. When the flow rate of the second oxygen flowing out of the second proportional valve 10 is less than the flow rate generated by the suction force of the drive member 15, the oxygen concentration range corresponding to different opening degrees of the second proportional valve 10 is 21%~99%.

[0052] Specifically, in the second working mode, refer to Figures 1-3 When the drive unit 15 stops working, the opening degree of the first proportional valve 11 is greater than 0, and the opening degree of the second proportional valve 10 can be greater than 0 or equal to 0. When the opening degree of the second proportional valve 10 is 0, the first oxygen enters the power flow inlet 121 to generate negative pressure at the negative pressure port 122, drawing ambient air into the air unit 400. The gas introduced into the patient's respiratory tract is a mixture of the first oxygen and ambient air. At this time, the oxygen concentration is the lowest, which is the second oxygen concentration threshold F2. The second oxygen concentration threshold F2 varies depending on the specific parameters of the venturi tube 12.

[0053] Table 1

[0054] Specifically, in Table 1, the temperature threshold T, air pressure threshold P, first oxygen concentration threshold F, first electrical charge threshold W1, and second electrical charge threshold W2 can be selected by those skilled in the art according to actual needs. For example, the temperature threshold T can be 70℃, or 65℃, 80℃, etc. For example, the air pressure threshold P can be 200kPa, or 190kPa, 210kPa, etc. For example, the first electrical charge threshold W1 can be W1, or 45%, 55%, etc. For example, the second electrical charge threshold W2 can be W2, or 25%, etc. x indicates that the current value does not affect the selection of the working mode.

[0055] Specifically, referring to Table 1, in the initial stage of patient transport, the battery of drive component 15 has sufficient power, with remaining battery power > W1; the heat generated by drive component 15 is small, and the temperature of drive component 15 < T; the pressure of the oxygen source in oxygen supply unit 300 is high, greater than P; at this time, corresponding to number 3 in Table 1, the electric and electronically controlled inhalation system is in the first working mode, referring to... Figure 1 When the drive unit 15 operates, the opening degree of the first proportional valve 11 is 0, the opening degree of the second proportional valve 10 is greater than 0, and the Venturi on / off valve 25 is closed. High-pressure oxygen from the oxygen source enters the oxygen supply unit 300 through the first air inlet 1, and flows out of the oxygen supply unit 300 sequentially through the oxygen filter 3, the first pressure sensor 6, the oxygen pressure reducing valve 8, and the first flow sensor 9, entering the second oxygen supply module 200. It then passes through the second proportional valve 10 to obtain second oxygen, which enters the oxygen mixing and noise reduction air duct 14. The drive unit 15 drives ambient air into the air unit 400, which flows out of the air unit 400 sequentially through the second air inlet 2, the primary air filter 4, the secondary air filter 5, the first one-way valve 26, and the negative pressure sensor 7, entering the oxygen mixing and noise reduction air duct 14. In the oxygen mixing and noise reduction air duct 14, the second oxygen mixes with the ambient air. At this time, the oxygen concentration of the gas introduced into the patient's respiratory tract is adjustable within the range of 21%-100%. The control unit can achieve the target oxygen concentration of the gas introduced into the patient's respiratory tract by adjusting the opening of the second proportional valve 11 and the output power of the drive unit 15.

[0056] Specifically, referring to Table 1, after a period of time during patient transport, the remaining battery power of the drive unit 15 is between W2 and W1; the pressure of the oxygen source of the oxygen supply unit 300 is still relatively high, greater than P; at this time, if the temperature of the drive unit 15 is < T and the target oxygen concentration is ≥ F, then corresponding to number 6 in Table 1, the electric and electronically controlled inhalation system is in the second working mode.

[0057] Further, refer to Figure 1In the second operating mode, the drive unit 15 stops working, the opening degree of the first proportional valve 11 is greater than 0, and the Venturi valve 25 opens; high-pressure oxygen from the oxygen source enters the oxygen supply unit 300 through the first air inlet 1, and flows out of the oxygen supply unit 300 through the oxygen filter 3, the first pressure sensor 6, the oxygen pressure reducing valve 8, and the first flow sensor 9 in sequence, entering the first oxygen supply module 100 and the second oxygen supply module 200; the oxygen entering the first oxygen supply module 100 passes through the first proportional valve 11 to obtain the first oxygen; the oxygen entering the second oxygen supply module 200 passes through the second proportional valve 11 to obtain the first oxygen. Example valve 10 obtains the second oxygen; the first oxygen enters the power flow inlet 121, and under the action of the Venturi principle, the negative pressure port 122 generates negative pressure. The second oxygen and ambient air enter the negative pressure port 122 through the oxygen mixing and noise reduction airway 14; it is discharged from the outlet 123, passes through the Venturi on / off valve 25, and then enters the inhalation unit 500. It then passes through the second flow sensor 17, the inhalation pressure sensor 18, the oxygen concentration sensor 19, the third one-way valve 22, the safety valve 20, the emergency inhalation valve 21, and the inhalation port 23 in sequence and is input into the patient's respiratory tract to provide the patient with gas of the target oxygen concentration.

[0058] Further, refer to Figure 1 In the second operating mode, when it is necessary to adjust the oxygen concentration of the gas entering the patient's respiratory tract to the target oxygen concentration, the control unit can adjust the opening of the first proportional valve 11 and the second proportional valve 10. When the opening of the second proportional valve 10 is 0, the oxygen concentration of the gas entering the patient's respiratory tract is the lowest, which is the second oxygen concentration threshold F2. When the second proportional valve 10 is adjusted to a certain opening, the pressure of the second oxygen flowing to the connection between the air unit 400 and the second oxygen module 200 is greater than the pressure of the ambient air, so that the ambient air cannot enter the air unit 400. Since the first one-way valve 26 allows the ambient air to enter the mixing unit only through the air unit 400, the second oxygen cannot be discharged from the air unit 400 outside the electric and electronically controlled inhalation system through the first one-way valve 26. The gas entering the negative pressure port 122 is the second oxygen. At this time, the electric and electronically controlled inhalation system can provide the patient with gas with a 100% oxygen concentration.

[0059] Furthermore, referring to Table 1, after a longer period of patient transport, the remaining battery power of the drive unit 15 is <W2; at this time, if the temperature of the drive unit 15 is <T and the pressure of the first air inlet 1 is ≥P, then corresponding to number 4 in Table 1, the electric control inhalation system is in the second working mode.

[0060] In the embodiments of this application, reference is made to Figures 1-3By setting up a first oxygen module 100 and a venturi tube 12, and connecting the first oxygen module 100 to the power flow inlet 121 of the venturi tube 12, the first oxygen flows into the venturi tube 12. Under the action of the venturi principle, a negative pressure is generated at the negative pressure port 122, drawing ambient air into the air unit 400. Thus, even after the drive unit 15 stops working, the electric-controlled inhalation system can still operate in the second working mode, and ambient air can still enter the air unit 400. The first oxygen and ambient air can be mixed, allowing the electric-controlled inhalation system to provide the gas mixed with the first oxygen and ambient air for a longer period of time, expanding the range of oxygen concentration provided. In this embodiment, by setting up a second oxygen module 200 and a mixing unit, and connecting the first oxygen module 100, the second oxygen module 200, and the air unit 400 to the mixing unit, the first oxygen, the second oxygen, and ambient air can be mixed to the target oxygen concentration before being introduced into the patient's respiratory tract, further expanding the range of the target oxygen concentration when the drive unit 15 stops working.

[0061] In the description of this specification, references to terms such as "some embodiments," "other embodiments," "exemplarily," "specifically," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An electric and electronically controlled intake system, characterized in that, include: First oxygen module (100), used for inhaling first oxygen; The second oxygen module (200) is used for inhaling a second oxygen; Air unit (400) for drawing in ambient air; The venturi tube (12) has a power flow inlet (121) and a negative pressure port (122), the power flow inlet (121) being connected to the first oxygen module (100), the first oxygen generating a negative pressure at the negative pressure port (122) to draw in ambient air from the air unit (400) through the negative pressure port (122); The mixing unit is connected to both the second oxygen module (200) and the air unit (400) to mix the second oxygen and the ambient air to a target oxygen concentration before introducing them into the patient's respiratory tract. The driving component (15) is connected to the mixing unit; The electric and electronically controlled air intake system includes a first working mode and a second working mode; In the first working mode, the drive unit (15) works, the first oxygen module (100) stops working, and the drive unit (15) drives the air unit (400) to draw in the ambient air; In the second working mode, the drive unit (15) stops working, the first oxygen module (100) works, and the first oxygen enters the power flow inlet (121) to generate negative pressure so as to draw in the ambient air from the negative pressure port (122).

2. The electric and electronically controlled intake system according to claim 1, characterized in that, The mixing unit includes an oxygen-mixing noise-reducing airway (14). The air outlet of the air unit (400) and the air outlet of the second oxygen module (200) are both connected to the air inlet of the mixed oxygen noise reduction airway (14). The air outlet of the mixed oxygen noise reduction airway (14) is connected to the air inlet of the drive unit (15) and the negative pressure port (122). The oxygen mixing and noise reduction airway (14) is used to mix the gas evenly and reduce the noise when the drive unit (15) and the negative pressure port (122) are working.

3. The electric and electronically controlled intake system according to claim 2, characterized in that, The Venturi tube (12) also includes an outlet (123); In the first working mode, the drive unit (15) drives the ambient air through the air unit (400) into the oxygen-mixing noise reduction airway (14), and the second oxygen enters the oxygen-mixing noise reduction airway (14). The ambient air and the second oxygen are mixed in the oxygen-mixing noise reduction airway (14) to the target oxygen concentration, and then introduced into the patient's respiratory tract through the drive unit (15). In the second working mode, the second oxygen enters the power flow inlet (121) and the oxygen mixing and noise reduction airway (14). The ambient air and the second oxygen entering the oxygen mixing and noise reduction airway (14) are mixed in the oxygen mixing and noise reduction airway (14) and then enter the negative pressure port (122). The exhaust port (123) outputs the mixed gas with the target oxygen concentration and inputs it into the patient's respiratory tract.

4. The electric and electronically controlled intake system according to claim 3, characterized in that, The electric and electronically controlled intake system also includes a Venturi valve (25), which is connected to the exhaust port (123) and is used to control the opening and closing of the exhaust port (123).

5. The electric and electronically controlled intake system according to claim 4, characterized in that, The electric control air intake system also includes a second one-way valve (16), the air inlet of which is connected to the air outlet of the drive unit (15).

6. The electric and electronically controlled intake system according to claim 5, characterized in that, The electric and electronically controlled inhalation system also includes an inhalation unit (500), which includes a second flow sensor (17), an inhalation pressure sensor (18), an oxygen concentration sensor (19), a safety valve (20), an emergency inhalation valve (21), a third one-way valve (22), and an inhalation port (23) for the patient to inhale, all connected in sequence. The outlet of the second one-way valve (16) and the outlet of the Venturi valve (25) are both connected to the inlet of the second flow sensor (17).

7. The electric and electronically controlled intake system according to claim 1, characterized in that, It also includes a control unit, to which the first oxygen module (100), the second oxygen module (200) and the drive unit (15) are all connected. The control unit is used to adjust the flow rate of the first oxygen module (100) and the second oxygen module (200) and the output power of the drive unit (15) so that the gas entering the patient's respiratory tract is the target oxygen concentration, and to switch the electric and electronically controlled inhalation system between the first working mode and the second working mode.

8. The electric and electronically controlled intake system according to claim 7, characterized in that, It also includes an oxygen supply unit (300), the oxygen supply unit (300) having a first air inlet (1) for connecting to an oxygen source at its air inlet end, and the air inlet ends of the first oxygen module (100) and the second oxygen module (200) are both connected to the air outlet end of the oxygen supply unit (300). The first air inlet (1) is connected to a first pressure sensor (6) to monitor the pressure of the first air inlet (1); The first oxygen module (100) includes a first proportional valve (11) to regulate the flow rate of the first oxygen; The second oxygen module (200) includes a second proportional valve (10) to regulate the flow rate of the second oxygen.

9. The electric and electronically controlled intake system according to claim 8, characterized in that, The electric and electronically controlled air intake system also includes a power supply system, which includes a battery, a power meter and a voltage conversion module. The voltage conversion module is connected to the drive unit (15) and the battery to convert the voltage output by the battery and send the converted voltage to the drive unit (15). The power meter is connected to the battery to monitor the battery's charge level. The drive unit (15) is provided with a temperature sensor (24), which is used to monitor the temperature of the drive unit (15); The control unit is used to adjust the opening degree of the first proportional valve (11) and the second proportional valve (10) according to the target oxygen concentration, the power monitoring meter, the temperature sensor (24) and the first pressure sensor (6), and to adjust the output power of the drive unit (15).

10. A ventilator, characterized in that, The ventilator includes the electrically controlled inhalation system according to any one of claims 1 to 9.

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