A ventilation method for pressure-controlled ventilation and an artificial resuscitator device

Abstract

The present invention discloses a ventilation method and artificial resuscitator device for pressure-controlled ventilation, including: a ventilation module, a switch valve and a pressure sampling module are provided on the ventilation pipeline; the pressure sampling module is arranged near the airflow output interface of the ventilation pipeline, and the pressure sampling module is used to obtain the actual pressure on the ventilation pipeline; a pressure comparison module is used to compare the actual pressure on the ventilation pipeline obtained by the pressure sampling module with the target pressure, and control the opening or closing of the switch valve according to the comparison result. The target pressure is set according to the ventilation pressure required by the ventilation pipeline. When the airbag is manually pressed, the pressure sampling module can obtain the actual pressure on the ventilation pipeline, and then compare it through the pressure comparison module to achieve effective feedback on the action of pressing the airbag, and cut off the excessive ventilation pressure by closing the switch valve to achieve the function of pressure-controlled ventilation and prevent over-pressure ventilation of the patient; and the artificial resuscitator device is compact and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of artificial resuscitators, and more specifically, to a ventilation method for pressure-controlled ventilation and an artificial resuscitator device. Background Art

[0002] The artificial resuscitator has the advantages of simple structure, quick and convenient operation, and easy to carry. It is mainly composed of an elastic breathing bag, a respirator, a breathing valve, an air storage bag, a mask or an endotracheal tube interface and an oxygen interface. Oxygen enters the air bag and the air storage bag, and the front valve is opened by manually pressing the air bag with fingers, and the oxygen is pressed into the mask or endotracheal tube that is close to the patient's mouth and nose to achieve the purpose of artificial ventilation.

[0003] Although manual resuscitators have the above advantages, they cannot effectively control ventilation pressure. Even if they are operated by professionally trained medical staff, it is quite difficult to maintain appropriate ventilation pressure for a long time. Currently, the general guidance for using manual resuscitators for pressure-controlled ventilation is to observe the degree of chest rise and fall of the patient. The accuracy of this method is heavily dependent on the experience of medical staff, and the size differences between patients also greatly affect the judgment of medical staff.

[0004] Therefore, it is necessary to provide a ventilation method of pressure-controlled ventilation and an artificial resuscitator device to at least partially solve the problems existing in the prior art. Summary of the invention

[0005] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0006] To at least partially solve the above problems, the present invention provides an artificial resuscitator device, comprising:

[0007] A ventilation module, wherein a switch valve and a pressure sampling module are provided on the ventilation pipeline;

[0008] The pressure sampling module is arranged close to the airflow output interface of the ventilation pipeline, and is used to obtain the actual pressure on the ventilation pipeline;

[0009] The pressure comparison module is used to compare the actual pressure on the ventilation pipeline obtained by the pressure sampling module with the target pressure, and control the opening or closing of the switch valve according to the comparison result.

[0010] Preferably, the pressure comparison module comprises:

[0011] A pressure setting unit sets a target pressure according to the ventilation pressure required by the ventilation circuit;

[0012] The comparison control unit is used to compare the actual pressure on the ventilation pipeline obtained by the pressure sampling module with the target pressure. If the comparison result is that the actual pressure is greater than the target pressure, the switch valve is controlled to be closed; if the comparison result is that the actual pressure is less than or equal to the target pressure, the switch valve is controlled to be opened.

[0013] Preferably, the pressure sampling module adopts a first pressure sensor, and the switch valve adopts an electric control valve;

[0014] The first pressure sensor transmits the acquired actual pressure on the ventilation pipeline to the comparison control unit;

[0015] The comparison control unit compares the actual pressure with the target pressure, and sends an opening control signal or a closing control signal to the switch valve according to the comparison result;

[0016] The switch valve executes an opening command according to an opening control signal, or executes a closing command according to a closing control signal.

[0017] Preferably, the pressure sampling module adopts a first connecting pipe, and the switch valve adopts an air-controlled valve;

[0018] The pressure comparison module includes: a comparison body, on which a comparison chamber is provided, the comparison chamber is provided with a sampling air pressure inlet and a control air pressure outlet, the sampling air pressure inlet is connected to the ventilation pipeline through a first connecting pipe, and the control air pressure outlet is connected to the switch valve through a second connecting pipe.

[0019] Preferably, the comparison control unit includes: a piston arranged in the comparison chamber, and the comparison chamber is divided into a sampling air chamber and a control chamber by the piston; the sampling air pressure inlet is arranged on the sampling air chamber, and the control air pressure outlet is arranged at one end of the control chamber close to the piston.

[0020] Preferably, the pressure setting unit is a pressure regulating assembly disposed in the control chamber, and the pressure regulating assembly is used to regulate the target pressure acting on the piston according to the ventilation pressure required by the ventilation pipeline.

[0021] Preferably, the pressure regulating assembly comprises: a regulating part and an elastic member slidably arranged on the control chamber, the elastic member being connected between the piston and the regulating part, a locking part being provided on one side of the regulating part, the locking part being used to lock the position of the regulating part in the control chamber;

[0022] A blocking portion for limiting the position of the piston is arranged in the control chamber.

[0023] Preferably, a pressure scale is provided on the surface of the comparison body, and a pressure pointer which moves synchronously with the pressure scale is provided on the adjustment part.

[0024] Preferably, a second pressure sensor is provided on one side of the piston connected to the elastic member, and a display module for displaying the pressure value detected by the second pressure sensor is provided on the surface of the comparison body.

[0025] A ventilation method for pressure-controlled ventilation, used in the artificial resuscitator device of the present invention, comprising:

[0026] Set the target pressure according to the ventilation pressure required by the ventilation circuit;

[0027] During artificial ventilation, the actual pressure in the ventilation circuit can be obtained in real time;

[0028] The actual pressure is compared with the target pressure. If the actual pressure is greater than the target pressure, the switch valve is controlled to close. If the actual pressure is less than or equal to the target pressure, the switch valve is controlled to open.

[0029] Compared with the prior art, the present invention has at least the following beneficial effects:

[0030] The ventilation method and artificial resuscitator device for pressure-controlled ventilation described in the present invention can set the target pressure of the pressure comparison module in advance according to the ventilation pressure required by the ventilation circuit. Then, when the airbag is manually pressed, the pressure sampling module can obtain the actual pressure on the ventilation circuit in real time, and then compare it through the pressure comparison module to achieve effective feedback on the action of pressing the airbag, thereby cutting off the excessive ventilation pressure by closing the switch valve to achieve the function of pressure-controlled ventilation and prevent damage to the patient due to over-pressure ventilation. At the same time, the artificial resuscitator device is small and convenient, and still retains the original advantages of the artificial resuscitator.

[0031] The ventilation method of pressure-controlled ventilation and the artificial resuscitator device described in the present invention, and other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by technicians in this field through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0033] Figure 1 is a system block diagram of the artificial resuscitator device of the present invention;

[0034] Figure 2 is a block diagram of a pressure comparison module in the artificial resuscitator device of the present invention;

[0035] Figure 3 It is a structural schematic diagram of the ventilation module and the ventilation pipeline in the artificial resuscitator device of the present invention;

[0036] Figure 4 It is a structural schematic diagram of a first pressure comparison module in the artificial resuscitator device of the present invention;

[0037] Figure 5 It is a structural schematic diagram of a pressure regulating component in a first pressure comparison module in the artificial resuscitator device of the present invention;

[0038] Figure 6 It is a structural schematic diagram of a second pressure comparison module in the artificial resuscitator device of the present invention;

[0039] Figure 7 The present invention is a flow chart of the ventilation method of pressure controlled ventilation. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0041] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0042] like Figure 1-Figure 2 As shown, the present invention provides an artificial resuscitator device, comprising:

[0043] A ventilation module, wherein a switch valve and a pressure sampling module are provided on the ventilation pipeline;

[0044] The pressure sampling module is arranged close to the airflow output interface of the ventilation pipeline, and is used to obtain the actual pressure on the ventilation pipeline;

[0045] The pressure comparison module is used to compare the actual pressure on the ventilation pipeline obtained by the pressure sampling module with the target pressure, and control the opening or closing of the switch valve according to the comparison result.

[0046] like Figure 3 As shown, the ventilation module includes: a simple respirator 5, one end of which is provided with an air inlet 1, and the other end is provided with a ventilation pipeline, the ventilation pipeline is provided with a diaphragm one-way valve 6 and a pressure sampling point 7 in sequence, and a mask 8 is provided at the airflow output interface of the ventilation pipeline, the diaphragm one-way valve 6 is also connected to the first interface of the three-way valve 9, the second interface of the three-way valve 9 is connected to the connection between the simple respirator 5 and the ventilation pipeline, and the third interface of the three-way valve 9 is connected to the pressure relief port 10;

[0047] The simple respirator 5 comprises: an inlet check valve 2, an air bag 3 and an outlet check valve 4 which are arranged in sequence, wherein the inlet check valve 2 is arranged on a side close to the air inlet 1;

[0048] The switch valve may be arranged between the diaphragm check valve 6 and the pressure sampling point 7, and the pressure sampling module is arranged at the pressure sampling point 7;

[0049] The target pressure of the pressure comparison module can be set in advance according to the ventilation pressure required by the ventilation circuit. Then, when the airbag 3 is manually pressed, the pressure sampling module can obtain the actual pressure on the ventilation circuit in real time, and then compare it through the pressure comparison module to achieve effective feedback on the action of pressing the airbag 3, thereby cutting off the excessive ventilation pressure by closing the switch valve to achieve the function of pressure-controlled ventilation and prevent damage to the patient due to over-pressure ventilation. At the same time, the artificial resuscitator device is small and convenient, and still retains the original advantages of the artificial resuscitator.

[0050] like Figure 2 As shown, in one embodiment, the pressure comparison module includes:

[0051] A pressure setting unit sets a target pressure according to the ventilation pressure required by the ventilation circuit;

[0052] The comparison control unit is used to compare the actual pressure on the ventilation pipeline obtained by the pressure sampling module with the target pressure. If the comparison result is that the actual pressure is greater than the target pressure, the switch valve is controlled to be closed; if the comparison result is that the actual pressure is less than or equal to the target pressure, the switch valve is controlled to be opened.

[0053] The pressure setting unit is used to set the target pressure, which may be derived from an electronic signal or mechanically generated, such as a spring; the actual pressure is obtained at the end of the ventilation line near the patient, which may also be obtained by obtaining an electrical signal from the pressure sampling point 7 (such as a pressure sensor), or by directly physically sampling the actual pressure at the pressure sampling point 7 (such as a pressure line); the comparison process between the actual pressure and the target pressure may be performed by comparing the electrical signal or by using a mechanical comparison structure, which is not limited by the present invention;

[0054] The comparison control unit can control the switch valve according to the comparison result. If the actual pressure is greater than the target pressure, it indicates that the ventilation pressure on the ventilation pipeline is too high, and the switch valve is controlled to close to cut off ventilation and realize the function of constant pressure ventilation; if the actual pressure is less than or equal to the target pressure, it indicates that over-pressure ventilation has not occurred, and the switch valve can be kept open for normal artificial ventilation.

[0055] like Figure 2 As shown, in one embodiment, the pressure sampling module adopts a first pressure sensor, and the switch valve adopts an electric control valve;

[0056] The first pressure sensor transmits the acquired actual pressure on the ventilation pipeline to the comparison control unit;

[0057] The comparison control unit compares the actual pressure with the target pressure, and sends an opening control signal or a closing control signal to the switch valve according to the comparison result;

[0058] The switch valve executes an opening command according to an opening control signal, or executes a closing command according to a closing control signal.

[0059] In this embodiment, electrical signals are used for ventilation control, the pressure sampling module adopts a first pressure sensor, the switch valve adopts an electrically controlled valve, and the comparison control unit is communicatively connected to the first pressure sensor and the switch valve respectively. The first pressure sensor obtains the actual pressure signal on the ventilation pipeline from the pressure sampling point 7 and transmits it to the comparison control unit. The comparison is performed by the comparison control unit to send a corresponding control signal to the switch valve according to the comparison result, and then the switch valve executes the corresponding command according to the corresponding control signal.

[0060] like Figure 4-Figure 6 As shown, in one embodiment, the pressure sampling module adopts a first connecting pipe, and the switch valve adopts an air-controlled valve;

[0061] The pressure comparison module includes: a comparison body 11, on which a comparison chamber 12 is provided, and the comparison chamber 12 is provided with a sampling air pressure inlet 121 and a control air pressure outlet 122, the sampling air pressure inlet 121 is connected to the ventilation pipeline through a first connecting pipe, and the control air pressure outlet 122 is connected to the switch valve through a second connecting pipe.

[0062] In the present embodiment, ventilation control is performed by means of a mechanical structure, and the pressure sampling module adopts a first connecting tube, which extends from the pressure sampling point 7 to the sampling air pressure inlet 121, and leads the airflow on the ventilation pipeline to the sampling air pressure inlet 121. In this way, the actual pressure in the ventilation pipeline can be compared with the target pressure in the comparison chamber 12. If the actual pressure is greater than the target pressure, the airflow will be discharged from the control air pressure outlet 122, and the discharged airflow will flow to the air control valve through the second connecting tube. After receiving the airflow, the air control valve will close and cut off the ventilation pipeline, thereby preventing over-pressure ventilation of the patient. If the actual pressure is less than or equal to the target pressure, no airflow will be discharged from the control air pressure outlet 122, and the air control valve will not receive the airflow and will remain in the open state.

[0063] like Figure 5 As shown, the comparison chamber 12 may be an annular chamber, such as Figure 6 As shown, the comparison chamber 12 may be a cylindrical chamber.

[0064] like Figure 5 and Figure 6 As shown, in one embodiment, the comparison control unit includes: a piston 13 arranged in a comparison chamber 12, and the comparison chamber 12 is divided into a sampling air chamber 123 and a control chamber 124 by the piston 13; the sampling air pressure inlet 121 is arranged on the sampling air chamber 123, and the control air pressure outlet 122 is arranged at one end of the control chamber 124 close to the piston 13.

[0065] The control cavity 124 is provided with a vent hole.

[0066] The air flow on the ventilation pipeline will enter the sampling air cavity 123 from the sampling air pressure inlet 121. When the actual pressure is less than or equal to the target pressure, the piston 13 will not move, and no air flow will be discharged from the control air pressure outlet 122. If the actual pressure is greater than the target pressure, the piston 13 will move to the side away from the sampling air pressure inlet 121, so that the air flow in the sampling air cavity 123 is discharged from the control air pressure outlet 122, and the air control valve is controlled to cut off the ventilation pipeline, thereby realizing comparative control of the air pressure.

[0067] like Figure 5 and Figure 6 As shown, further, the pressure setting unit is a pressure regulating assembly 14 disposed in the control chamber 124, and the pressure regulating assembly 14 is used to adjust the target pressure acting on the piston 13 according to the ventilation pressure required by the ventilation pipeline.

[0068] Further, the pressure regulating assembly 14 comprises: a regulating portion 141 and an elastic member 142 slidably disposed on the control chamber 124, the elastic member 142 being connected between the piston 13 and the regulating portion 141, a locking portion 143 being provided on one side of the regulating portion 141, the locking portion 143 being used to lock the position of the regulating portion 141 in the control chamber 124;

[0069] A blocking portion 15 for limiting the position of the piston 13 is disposed in the control chamber 124 .

[0070] Furthermore, a pressure scale 16 is disposed on the surface of the comparison body 11 , and a pressure pointer 17 that moves synchronously with the pressure scale 16 is disposed on the adjustment portion 141 .

[0071] The pressure regulating assembly 14 can adjust the target pressure acting on the piston 13, correspond the compression degree of the elastic member 142 to the pressure scale 16, and set the regulating part 141 and the pressure pointer 17 to move synchronously. In this way, when adjusting the target pressure acting on the piston 13, the regulating part 141 can be moved in the control chamber 124 through the locking part 143, and then observe whether the pressure scale 16 indicated by the pressure pointer 17 reaches the target pressure position. After reaching the position, the position of the regulating part 141 can be locked by the locking part 143, and the elastic member 142 will form a corresponding target pressure on the piston 13, and the piston 13 will limit its position through the blocking part 15 to achieve the adjustment of the target pressure.

[0072] Specifically, Figure 5 As shown, the adjusting portion 141 is arranged in the arc-shaped control cavity 124, and one end of the locking portion 143 is provided with a stud threadedly connected to the adjusting portion 141, and a sliding groove for the locking portion 143 to slide can be provided on the outer wall of the control cavity 124. When the adjusting portion 141 needs to be moved, the stud of the locking portion 143 is loosened, and the part of the locking portion 143 located outside the control cavity 124 does not contact the outer surface of the comparison body 11, and the moving locking portion 143 can drive the adjusting portion 141 to move. When the position of the adjusting portion 141 needs to be locked, the stud of the locking portion 143 is tightened, and the part of the locking portion 143 located outside the control cavity 124 is in close contact with the outer surface of the comparison body 11 (or a card-connected method is used) to lock the position.

[0073] like Figure 6 As shown, the adjusting portion 141 is slidably disposed in the control cavity 124, the locking portion 143 is in contact with the adjusting portion 141, and the locking portion 143 is threadedly connected to the comparison body 11, so that the adjusting portion 141 can be pushed to move by screwing the locking portion 143, or the adjusting portion 141 can move under the elastic pushing force of the elastic member 142 by screwing the locking portion 143.

[0074] In one embodiment, a second pressure sensor is disposed on one side of the piston 13 connected to the elastic member 142 , and a display module for displaying the pressure value detected by the second pressure sensor is disposed on the surface of the comparison body 11 .

[0075] The display module may be a display screen.

[0076] In this embodiment, the pressure pointer 17 and the pressure scale 16 used to display the target pressure can be replaced by a second pressure sensor and a display module. The second pressure sensor can sense the pressure value of the elastic member 142 acting on the piston 13 and display it through the display module, so that the target pressure can be displayed more accurately.

[0077] Furthermore, it also includes a calibration module for calibrating the second pressure sensor; the calibration module can be arranged in the display module and electrically connected to the second pressure sensor;

[0078] During calibration, a pressure detector is connected between the first connecting pipe and the sampling air pressure inlet 121 to obtain the actual pressure in the sampling air cavity 123 in real time, and the detection pressure information of the second pressure sensor is obtained according to the actual pressure in the sampling air cavity 123, and the reference pressure information corresponding to the second pressure sensor is obtained according to the actual pressure and the preset target pressure (when the actual pressure is less than the target pressure, the difference between the target pressure and the actual pressure is the reference pressure information);

[0079] The calibration module calibrates the second pressure sensor according to the detection pressure information and the reference pressure information according to the calibration model, so that the detection pressure information is the same as the reference pressure information;

[0080] The calibration model is shown below:

[0081] f(t)=K i e(t)-K p ΔF(t)-K d ΔF 2 (t)

[0082] Among them, f(t) is the calibration function at the current time (i.e., time t), K i , K p and K d are the integral parameter, proportional parameter and differential parameter respectively, e(t) is the pressure error detected by the second pressure sensor at the current moment (i.e., moment t), ΔF(t) is the pressure change value of the second pressure sensor at the current moment (i.e., moment t), ΔF 2 (t) is the square of the pressure change value of the second pressure sensor at the current moment (i.e., moment t);

[0083] in,

[0084] F d (t) is the reference pressure information corresponding to the second pressure sensor at the current moment (i.e., moment t), F(t) is the detection pressure information of the second pressure sensor at the current moment, F(t-1) is the detection pressure information of the second pressure sensor at the previous moment (i.e., moment t-1), and F(t-2) is the detection pressure information of the second pressure sensor at the previous two moments (i.e., moment t-2).

[0085] Through the above method, the second pressure sensor can be calibrated. Before calibration, another air pressure detector is connected between the first connecting tube and the sampling air pressure inlet 121, and then the airbag 3 is manually pressed (a smaller force can be used). The second pressure sensor can be calibrated through the above calibration method and calibration model (the second pressure sensor itself can be calibrated, and the pressure value displayed by the display module can also be calibrated), so that the display module can accurately display the pressure value corresponding to the pressure at the sampling air pressure inlet 121 (the pressure at the sampling air pressure inlet 121 is zero, and the pressure value displayed by the display module is the target pressure);

[0086] It can improve the accuracy of target pressure setting, and each time the pressure value displayed on the display module deviates from the target pressure, the pressure regulating component 14 can be used to adjust the pressure value displayed on the display module to make it the same as the target pressure. After each adjustment, the second pressure sensor can be calibrated in the above manner to ensure the accuracy of target pressure setting, improve the control accuracy of the switch valve, achieve a more accurate pressure control effect, prevent over-pressure ventilation of the patient, and ensure the safety of ventilation.

[0087] like Figure 7 As shown, a ventilation method of pressure-controlled ventilation, used in the artificial resuscitator device of the present invention, comprises:

[0088] S1. Set the target pressure according to the ventilation pressure required by the ventilation pipeline;

[0089] S2. During artificial ventilation, obtain the actual pressure in the ventilation circuit in real time;

[0090] S3. Compare the actual pressure with the target pressure. If the actual pressure is greater than the target pressure, the switch valve is controlled to be closed. If the actual pressure is less than or equal to the target pressure, the switch valve is controlled to be opened.

[0091] The target pressure can be set in advance according to the ventilation pressure required by the ventilation circuit, and then when the airbag 3 is manually pressed, the actual pressure on the ventilation circuit can be obtained in real time. Then, by comparing the actual pressure with the target pressure, effective feedback on the action of pressing the airbag 3 can be achieved, so that the excessive ventilation pressure can be cut off by closing the switch valve to achieve the function of pressure-controlled ventilation and prevent damage to the patient due to over-pressure ventilation.

[0092] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0093] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0094] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. An artificial resuscitator device, characterized in that: include: A ventilation module, wherein a switch valve and a pressure sampling module are provided on the ventilation pipeline; The pressure sampling module is arranged close to the airflow output interface of the ventilation pipeline, and is used to obtain the actual pressure on the ventilation pipeline; A pressure comparison module is used to compare the actual pressure on the ventilation pipeline obtained by the pressure sampling module with the target pressure, and control the opening or closing of the switch valve according to the comparison result; The pressure comparison module comprises: A pressure setting unit sets a target pressure according to the ventilation pressure required by the ventilation circuit; A comparison control unit is used to compare the actual pressure on the ventilation pipeline obtained by the pressure sampling module with the target pressure. If the comparison result is that the actual pressure is greater than the target pressure, the switch valve is controlled to be closed; if the comparison result is that the actual pressure is less than or equal to the target pressure, the switch valve is controlled to be opened; The pressure sampling module adopts a first connecting pipe, and the switch valve adopts an air-controlled valve; The pressure comparison module comprises: a comparison body, on which a comparison chamber is provided, the comparison chamber is provided with a sampling air pressure inlet and a control air pressure outlet, the sampling air pressure inlet is connected to the ventilation pipeline through a first connecting pipe, and the control air pressure outlet is connected to the switch valve through a second connecting pipe; The comparison control unit comprises: a piston arranged in the comparison chamber, the comparison chamber is divided into a sampling air chamber and a control chamber by the piston; the sampling air pressure inlet is arranged on the sampling air chamber, and the control air pressure outlet is arranged at one end of the control chamber close to the piston; The pressure setting unit is a pressure regulating component arranged in the control chamber, and the pressure regulating component is used to adjust the target pressure acting on the piston according to the ventilation pressure required by the ventilation pipeline; The pressure regulating assembly comprises: a regulating part and an elastic member slidably arranged on the control chamber, the elastic member being connected between the piston and the regulating part, a locking part being arranged on one side of the regulating part, the locking part being used to lock the position of the regulating part in the control chamber; A blocking portion for limiting the position of the piston is provided in the control chamber; A second pressure sensor is disposed on one side of the piston connected to the elastic member, and a display module for displaying the pressure value detected by the second pressure sensor is disposed on the surface of the comparison body.

2. The artificial resuscitator device according to claim 1, characterized in that: The surface of the comparison body is provided with a pressure scale, and the adjustment part is provided with a pressure pointer which moves synchronously with the pressure scale.

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