A lung demonstration model for teaching ventilator

Abstract

The present invention relates to the technical field of lung demonstration models, and specifically discloses a lung demonstration model for teaching a ventilator, comprising a storage bottle, a lung model and a trachea model, wherein the trachea model is connected to the lung model; an air pressure simulation mechanism, wherein the air pressure simulation mechanism is located inside a base; a switching mechanism, wherein the switching mechanism is located inside the base; and an airway obstruction mechanism, wherein the airway obstruction mechanism is connected to the switching mechanism. With this lung demonstration model for teaching a ventilator, students can control the air pressure simulation mechanism through the switching mechanism to simulate the air pressure of different lung states, and the airway obstruction mechanism can synchronously adjust the inner diameter of the trachea model, thereby simulating the data monitored by the ventilator when the patient is in different pathological states in actual scenarios, helping students to practice preliminarily judging the patient's lung and airway conditions based on changes in data such as the tidal volume of the ventilator, thereby enhancing students' learning effects, and exercising students' actual adaptability by simulating various emergencies when patients wear ventilators.

Description

Technical Field

[0001] The invention relates to the technical field of lung demonstration models, in particular to a lung demonstration model for teaching ventilators. Background Art

[0002] The lung demonstration model is a model that can simulate the breathing movement of the human lungs. It usually includes structures such as alveoli and bronchi, and can simulate the real breathing process by adjusting airflow and pressure.

[0003] In ventilator teaching, the lung demonstration model is usually connected to the ventilator to intuitively demonstrate the working principle of the ventilator by simulating the breathing process, including the inhalation and exhalation of gases, and the control of pressure and flow. Students can operate the connection between the ventilator and the simulated lung, so that the operator can become familiar with the operating procedures and parameter settings of the ventilator without direct contact with the patient, and learn how to correctly set the ventilator parameters, observe the respiratory waveform, and deal with possible alarm situations, thereby helping students better understand and master the use of the ventilator.

[0004] However, lung demonstration models are usually simplified simulations of real lung structure and function, which results in the inability to accurately reflect the details and complex respiratory changes of actual patients' lungs when simulating pathological conditions (such as airway stenosis and emphysema). This makes students lack the ability to practice inferring the patient's lung condition based on the instrument parameters of the ventilator, affecting students' learning effect and skill improvement. To this end, we propose a lung demonstration model for ventilator teaching. Summary of the invention

[0005] The purpose of the present invention is to provide a lung demonstration model for ventilator teaching, so as to solve the problem raised in the above background technology that students lack the ability to practice inferring the patient's lung condition based on the instrument parameters of the ventilator, which affects the students' learning effect and skill improvement.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lung demonstration model for teaching a ventilator, comprising a storage bottle, a lung model and a trachea model, wherein the trachea model is connected to the lung model, the lung model is located inside the storage bottle, and one end of the trachea model passes through the storage bottle and is connected to the outside world; and further comprising a base, which is fixedly connected to the bottom of the storage bottle;

[0007] An air pressure simulation mechanism, the air pressure simulation mechanism is located inside the base, and the air pressure simulation mechanism adjusts the air pressure inside the storage bottle;

[0008] A switching mechanism, the switching mechanism is located inside the base, the switching mechanism is connected to the air pressure simulation mechanism, and the switching mechanism controls the air pressure simulation mechanism to simulate air pressure in different states of the lungs;

[0009] The airway obstruction mechanism is connected with the switching mechanism. When the switching mechanism controls the air pressure simulation mechanism to simulate the air pressure of different lung states, the airway obstruction mechanism adjusts the inner diameter of the trachea model.

[0010] Among them, the air pressure simulation mechanism includes a rubber membrane fixedly connected to the inner wall of the base, the rubber membrane closes the opening at the bottom of the storage bottle, a pull rod is fixedly connected to the bottom of the rubber membrane, an electric telescopic rod is fixedly connected to the outside of the pull rod, and the electric telescopic rod is installed inside the base.

[0011] Among them, the switching mechanism includes a fixed box installed in the base, a rolling bin is provided on the inner wall of the fixed box, a transmission tube is fixedly connected to the outer side of the fixed box, the transmission tube is communicated with the rolling bin, and the end of the transmission tube away from the fixed box passes through the base and is communicated with the outside, a ball is provided on the inner wall of the rolling bin, a driving member for pushing the ball to roll on the inner wall of the rolling bin is provided below the ball, a path adjustment member is provided on the inner wall of the rolling bin, a plurality of storage grooves are provided at the bottom of the fixed box, the storage grooves are communicated with the rolling bin, pressure plates are installed on the inner walls of the plurality of storage grooves, pressure sensors and controllers are installed on the surface of the pressure plates, the controller is connected to the electric telescopic rod one, and the plurality of controllers control the electric telescopic rod one to work at different frequencies and strokes, a revealing member is provided on the outer side of the fixed box, and the revealing member reveals which storage groove the ball falls into.

[0012] Among them, the driving part includes a driving plate that is slidably connected to the inner wall of the rolling bin. The ball enters the rolling bin from the transmission tube and falls onto the driving plate. A reset spring is fixedly connected to the bottom of the driving plate. The reset spring is fixedly connected to the inner wall of the rolling bin. A connecting plate is fixedly connected to the outer side of the driving plate. The connecting plate is slidably connected to the inner wall of the fixed box. A pressing column is fixedly connected to one end of the connecting plate that passes through the base. The pressing column is slidably connected to the inner wall of the base.

[0013] The path adjustment member includes a plurality of rotating shafts rotatably connected to the inner wall of the rolling bin, and rubber wheels are fixedly connected to the outer sides of the rotating shafts, and the plurality of rubber wheels are distributed in an inverted triangle.

[0014] Among them, the revealing part includes a plurality of output tubes fixedly connected to the outside of the fixed box, the plurality of output tubes are respectively connected to the corresponding storage grooves, the end of the output tube away from the fixed box passes through the base and is connected to the outside, a closing plate is slidably connected to the inner wall of the fixed box, the closing plate closes the connection between the storage groove and the output tube, an electric telescopic rod 2 is fixedly connected to the top of the closing plate, the electric telescopic rod 2 is fixedly connected to the inner wall of the fixed box, a control button is installed at the end of each output tube away from the fixed box, and the control button is connected to the electric telescopic rod 2.

[0015] Among them, the airway obstruction mechanism includes two air bags fixedly connected to the inner wall of the trachea model, an air cylinder is installed on the surface of the storage bottle, a piston plate is slidably connected to the inner wall of the air cylinder, an electric telescopic rod three is fixedly connected to one side of the piston plate, the electric telescopic rod three is fixedly connected to the inner wall of the air cylinder, the electric telescopic rod three is connected to the controller, and a transmission component is provided between the output end of the air cylinder and the two air bags.

[0016] Among them, the transmission component includes three air pipes, which are connected to the air storage cylinder and two air bags respectively. A connecting block is provided near one end of the three air pipes. A placement groove is opened on the inner wall of the connecting block. A switching component for connecting different air pipes is provided on the inner wall of the placement groove.

[0017] Among them, the switching part includes a connecting block rotatably connected to the inner wall of the placement groove, a connecting groove is opened on the inner wall of the connecting block, the connecting groove is T-shaped, a driving shaft is fixedly connected to the axis of the connecting block, the driving shaft is rotatably connected to the inner wall of the connecting block, and one end of the driving shaft passing through the connecting block is fixedly connected to a micro motor, the micro motor is installed on the surface of the connecting block, and multiple controllers are connected to the micro motor.

[0018] Among them, a plurality of silicone curtains are installed on the inner wall of the connecting groove, and the plurality of silicone curtains are respectively located at the ports of the connecting groove.

[0019] The present invention has at least the following beneficial effects:

[0020] When students are initially learning this application, the air pressure simulation mechanism simulates the patient's breathing conditions, and students understand the tidal volume, airway pressure, and respiratory rate of normal patients and patients with airway swelling, coughing, and sputum in the airway through the parameters of the ventilator. After students understand the various parameters of the ventilator, students control the air pressure simulation mechanism to simulate the air pressure in different lung states through a switching mechanism, and the airway obstruction mechanism synchronously adjusts the size of the inner diameter of the trachea model, thereby simulating the data monitored by the ventilator when the patient is in different pathological states in actual scenarios, helping students practice preliminarily judging the patient's lung and airway conditions based on changes in data such as the ventilator's tidal volume, thereby enhancing students' learning effects, and exercising students' actual adaptability by simulating various emergencies of patients wearing ventilators. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall schematic diagram of the present invention;

[0022] Figure 2 It is a front cross-sectional schematic diagram of the present invention;

[0023] Figure 3 It is a schematic diagram of the side cross-sectional structure of the present invention;

[0024] Figure 4 for Figure 3 Enlarged schematic diagram of area A in the middle;

[0025] Figure 5 It is a rear cross-sectional structural schematic diagram of the fixing box of the present invention;

[0026] Figure 6 It is a schematic diagram of the airway obstruction mechanism structure in a separated state of the present invention;

[0027] Figure 7 It is a partial cross-sectional schematic diagram of the airway obstruction mechanism of the present invention;

[0028] Figure 8 for Figure 7 Enlarged schematic diagram of area B in the middle.

[0029] In the figure: 1, storage bottle; 2, lung model; 3, trachea model; 4, base; 5, air pressure simulation mechanism; 50, rubber membrane; 51, pull rod; 52, electric telescopic rod 1; 6, switching mechanism; 60, fixing box; 61, rolling bin; 62, transmission tube; 63, ball bearing; 64, driving member; 65, path adjustment member; 66, storage slot; 67, pressure plate; 68, pressure sensor; 69, controller; 610, revealing member; 611, driving plate; 612, reset spring; 613, connecting plate; 6 14. Press column; 615. Rotating shaft; 616. Rubber wheel; 617. Output pipe; 618. Closing plate; 619. Electric telescopic rod 2; 620. Control button; 7. Airway obstruction mechanism; 70. Air bag; 71. Air reservoir; 72. Piston plate; 73. Electric telescopic rod 3; 74. Transmission member; 75. Air pipe; 76. Connecting block; 77. Placement slot; 78. Switching member; 79. Connecting block; 710. Connecting slot; 711. Driving shaft; 712. Micro motor; 713. Silicone curtain. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1

[0032] See also Figures 1 to 8The present invention provides a technical solution: a lung demonstration model for teaching a ventilator, comprising a storage bottle 1, a lung model 2 and a trachea model 3, wherein the trachea model 3 is connected to the lung model 2, the lung model 2 is located inside the storage bottle 1, and one end of the trachea model 3 passes through the storage bottle 1 and is connected to the outside; the present invention also comprises a base 4, which is fixedly connected to the bottom of the storage bottle 1; an air pressure simulation mechanism 5, which is located inside the base 4 and adjusts the air pressure in the storage bottle 1; a switching mechanism 6, which is located inside the base 4 and is connected to the air pressure simulation mechanism 5, and which controls the air pressure simulation mechanism 5 to simulate the air pressure of the lungs in different states; an airway obstruction mechanism 7, which is connected to the switching mechanism 6, and when the switching mechanism 6 controls the air pressure simulation mechanism 5 to simulate the air pressure of the lungs in different states, the airway obstruction mechanism 7 adjusts the inner diameter of the trachea model 3.

[0033] During the initial learning, students connect the trachea model 3 to the ventilator, and the air pressure simulation mechanism 5 simulates the patient's breathing. Students understand the tidal volume, airway pressure, and respiratory rate of normal patients and patients with airway swelling, coughing, and sputum in the airway through the parameters of the ventilator.

[0034] After understanding the various parameters of the ventilator, students control the air pressure simulation mechanism 5 to simulate the air pressure in different lung states through the switching mechanism 6, and the airway obstruction mechanism 7 synchronously adjusts the inner diameter of the trachea model 3, thereby simulating the data monitored by the ventilator when the patient is in different pathological states in actual scenarios, helping students practice preliminarily judging the patient's lung and airway conditions based on changes in data such as the tidal volume of the ventilator, enhancing students' learning effects, and exercising students' actual adaptability by simulating various emergencies when patients wear ventilators.

[0035] The air pressure simulation mechanism 5 includes a rubber membrane 50 fixedly connected to the inner wall of the base 4, the rubber membrane 50 closes the opening at the bottom of the storage bottle 1, a pull rod 51 is fixedly connected to the bottom of the rubber membrane 50, an electric telescopic rod 52 is fixedly connected to the outside of the pull rod 51, and the electric telescopic rod 52 is installed inside the base 4.

[0036] When the air pressure simulation mechanism 5 is working, the extension and retraction of the electric telescopic rod 52 drives the pull rod 51 to move up and down in the vertical direction. Since the rubber membrane 50 is made of rubber, the pull rod 51 is located at the center of the rubber membrane 50. When the pull rod 51 pulls the rubber membrane 50, the change of the rubber membrane 50 causes the air pressure in the storage bottle 1 to change, that is, when the rubber membrane 50 is pulled downward, the air pressure in the storage bottle 1 decreases, and the ventilator ventilates to the lung model 2 through the trachea model 3, and the lung model 2 swells; when the rubber membrane 50 is pushed upward, the air pressure in the storage bottle 1 increases, and the lung model 2 discharges the internal gas into the ventilator through the trachea model 3, thereby simulating the patient's lung breathing condition. By changing the extension range and frequency of the electric telescopic rod 52, the lung condition of the patient in different states is simulated.

[0037] The switching mechanism 6 includes a fixed box 60 installed in the base 4, and a rolling bin 61 is provided on the inner wall of the fixed box 60. A transmission tube 62 is fixedly connected to the outer side of the fixed box 60, and the transmission tube 62 is communicated with the rolling bin 61. One end of the transmission tube 62 away from the fixed box 60 passes through the base 4 and is communicated with the outside. A ball 63 is provided on the inner wall of the rolling bin 61, and a driving member 64 for pushing the ball 63 to roll on the inner wall of the rolling bin 61 is provided below the ball 63. A path adjustment member 65 is provided on the inner wall of the rolling bin 61. A plurality of storage grooves 66 are provided at the bottom of the fixed box 60, and the storage grooves 66 are communicated with the rolling bin 61. Pressure plates 67 are installed on the inner walls of the plurality of storage grooves 66. Pressure sensors 68 and controllers 69 are installed on the surface of the pressure plates 67. The controller 69 is connected to the electric telescopic rod 52. The plurality of controllers 69 control the electric telescopic rod 52 to work at different frequencies and strokes. A revealing member 610 is provided on the outer side of the fixed box 60, and the revealing member 610 reveals which storage groove 66 the ball 63 falls into.

[0038] When the switching mechanism 6 is working, the student puts the ball 63 into the transmission tube 62. The ball 63 slides into the rolling bin 61 under the action of gravity and is located above the driving member 64. The student stores energy in the driving member 64 by pressing the part of the driving member 64 located on the outside of the base 4. The driving member 64 ejects the ball 63 with different forces according to the different pressing forces of the student. After the student releases the driving member 64, the driving member 64 launches the ball 63, and the ball 63 rolls on the inner wall of the rolling bin 61. When the ball 63 rolls, the path adjustment member 65 randomly changes the moving path of the ball 63. Finally, the ball 63 randomly falls into one of the three receiving grooves 66 under the action of gravity. After the ball 63 enters the receiving groove 66, it presses the pressure plate 67 at the bottom of the receiving groove 66. At this time, the pressure sensor 68 in the pressure plate 67 detects the pressure change information and transmits the pressure change information to the controller 69. Since the controllers 69 in the three receiving grooves 66 respectively control the electric A certain working frequency of the telescopic rod 52, thereby the triggered controller 69 controls the electric telescopic rod 52 to work according to the frequency and stroke corresponding to the controller 69, so as to cooperate with the simulation of the patient's coughing state. The controller 69 located in the middle storage groove 66 controls the patient to be in a "no coughing" state, and the controllers 69 located in the storage grooves 66 on both sides control the patient to be in a "coughing" state. Moreover, the controllers 69 in the three storage grooves 66 correspond to and control a certain form of the airway obstruction mechanism 7, so that the triggered controller 69 will also control the airway obstruction mechanism 7 to work. The two controllers 69 located in the storage grooves 66 on both sides respectively control the trachea model 3 to be in the "presence of sputum" and "airway swelling" states, and the controller 69 located in the middle storage groove 66 controls the trachea model 3 to be in a "normal" state. The airway obstruction mechanism 7 controls the change in the inner diameter of the trachea model 3, thereby simulating the patient's airway condition under this pathology, such as whether the patient's airway is swollen and whether there is sputum in the airway.

[0039] When simulating a patient's cough, since the coughing action itself will produce a fast and powerful exhalation process, the working frequency of the electric telescopic rod 52 will be accelerated for a period of time, and then return to normal frequency for a period of time. By repeating this cycle many times, the number of cycles can be set by the student. When just learning, the number of cycles can be 5-6 times to give students sufficient observation time. As they become more proficient, the number of cycles can be gradually reduced, allowing students to judge the lung and respiratory status of the "patient" under this parameter through the changes in the parameters of the ventilator. After the students make a judgment, the students use the revealing piece 610 to eject the launched ball 63 to help the students understand whether their judgment is correct.

[0040] The coughing action is usually a short, sudden process, which will cause the tidal volume delivered by the ventilator to decrease at the moment of coughing, because part of the gas is used in the exhalation process during coughing. After the cough ends, if the patient's airway is normal, the ventilator parameters return to normal.

[0041] If there is sputum in the patient's airway, coughing will cause the sputum in the airway to be expelled or moved, which will temporarily change the patency and resistance of the airway, and the tidal volume will return to normal levels.

[0042] If the patient's airway is swollen, coughing will not change the patency of the airway, and thus the tidal volume will not change after the cough ends.

[0043] Thus, the switching mechanism 6 controls the air pressure simulation mechanism 5 to simulate the patient's lung coughing, and controls the airway obstruction mechanism 7 to simulate the presence of sputum and swelling in the patient's airway, so as to help students practice preliminarily judging the patient's airway condition through the ventilator parameters, enhance the students' learning effect, and exercise the students' actual adaptability by simulating various emergencies when the patients wear ventilators.

[0044] The driving member 64 includes a driving plate 611 which is slidably connected to the inner wall of the rolling bin 61. The ball 63 enters the rolling bin 61 from the transmission tube 62 and falls onto the driving plate 611. A return spring 612 is fixedly connected to the bottom of the driving plate 611. The return spring 612 is fixedly connected to the inner wall of the rolling bin 61. A connecting plate 613 is fixedly connected to the outer side of the driving plate 611. The connecting plate 613 is slidably connected to the inner wall of the fixed box 60. A pressing column 614 is fixedly connected to one end of the connecting plate 613 which passes through the base 4. The pressing column 614 is slidably connected to the inner wall of the base 4.

[0045] When the driving member 64 is working, the student presses the pressing column 614 located on the outside of the base 4, and the pressing column 614 drives the driving plate 611 to move through the connecting plate 613. The driving plate 611 slides downward along the inner wall of the rolling bin 61 and squeezes the return spring 612. When the driving plate 611 moves downward, the ball 63 located on the driving plate 611 also drops together. When the student releases the pressing column 614, the return spring 612 in a compressed state drives the driving plate 611 to reset, and the driving plate 611 pushes the ball 63 upward, so that when the return spring 612 pushes the driving plate 611 to reset, the ball 63 above the driving plate 611 continues to move under inertia, thereby rolling on the inner wall of the rolling bin 61 to complete the ejection of the ball 63, and the initial velocity of the ball 63 ejection is different depending on the depth of the student's pressing.

[0046] The path adjustment member 65 includes a plurality of rotating shafts 615 rotatably connected to the inner wall of the rolling bin 61 , and rubber wheels 616 are fixedly connected to the outer sides of the rotating shafts 615 , and the plurality of rubber wheels 616 are distributed in an inverted triangle shape.

[0047] When the ball 63 slides on the inner wall of the rolling chamber 61, if it hits the rubber wheel 616, the impact force will cause the rubber wheel 616 to rotate, and the interaction force between the rubber wheel 616 and the ball 63 will also change the original rolling path of the ball 63. Moreover, if the rotation of the rubber wheel 616 does not stop when the student ejects the ball 63 next time, the rotating rubber wheel 616 will also apply another deflection force to the ball 63, thereby improving the random effect.

[0048] The revealing member 610 includes a plurality of output tubes 617 fixedly connected to the outer side of the fixed box 60, and the plurality of output tubes 617 are respectively connected to the corresponding receiving grooves 66. The end of the output tube 617 away from the fixed box 60 passes through the base 4 and is connected to the outside. A closing plate 618 is slidably connected to the inner wall of the fixed box 60. The closing plate 618 closes the connection between the receiving groove 66 and the output tube 617. An electric telescopic rod 619 is fixedly connected to the top of the closing plate 618. The electric telescopic rod 619 is fixedly connected to the inner wall of the fixed box 60. A control button 620 is installed at one end of each output tube 617 away from the fixed box 60, and the control button 620 is connected to the electric telescopic rod 619.

[0049] When the revealing member 610 is working, the student drives the electric telescopic rod 2 619 to retract through the control button 620 on the outside. The contraction of the electric telescopic rod 2 619 drives the closing plate 618 to slide upward, so that the output tube 617 is connected with the receiving groove 66. At this time, the ball 63 located in the receiving groove 66 rolls out from the inner wall of the receiving groove 66 under the action of gravity. The staff compares their judgment based on the rolling position of the ball 63 to see if it is correct.

[0050] The airway obstruction mechanism 7 includes two air bags 70 fixedly connected to the inner wall of the trachea model 3, an air cylinder 71 is installed on the surface of the storage bottle 1, a piston plate 72 is slidably connected to the inner wall of the air cylinder 71, an electric telescopic rod three 73 is fixedly connected to one side of the piston plate 72, the electric telescopic rod three 73 is fixedly connected to the inner wall of the air cylinder 71, the electric telescopic rod three 73 is connected to the controller 69, and a transmission component 74 is provided between the output end of the air cylinder 71 and the two air bags 70.

[0051] When the ball 63 falls into the receiving groove 66 in the middle, the controller 69 in the middle controls the electric telescopic rod 52 to stop working, and the inner diameter of the tracheal model 3 does not change.

[0052] When the ball 63 falls into the receiving groove 66 on both sides, the controller 69 located in the receiving groove 66 on both sides will control the electric telescopic rod three 73 to extend, and the electric telescopic rod three 73 drives the piston plate 72 to move to cooperate with the gas in the gas storage cylinder 71 to be injected into the transmission component 74. The transmission component 74 injects the transmitted gas into one of the air bags 70, so that the air bag 70 injected with gas expands to cooperate with the change of the inner diameter of the trachea model 3.

[0053] If the ball 63 falls into the left receiving groove 66 , the controller 69 in the left receiving groove 66 controls the transmission member 74 to prevent the two airbags 70 from being connected, so that when simulating the "coughing" state, the airflow in the trachea model 3 will not change the size of the inflated airbag 70 .

[0054] If the ball 63 falls into the receiving groove 66 on the right side, after a period of time (the time is generally 2-3 seconds), the controller 69 in the right receiving groove 66 controls the transmission element 74 to connect the two air bags 70, so that when simulating the "coughing" state, the airflow in the trachea model 3 will compress the air bag 70 when flowing, so that the gas in the inflated air bag 70 flows to the other air bag 70, so that after coughing, the patency and resistance of the airway are changed, and the tidal volume will return to a normal level.

[0055] The transmission component 74 includes three air pipes 75, which are connected to the air storage cylinder 71 and the two air bags 70 respectively. A connecting block 76 is provided near one end of the three air pipes 75. A placement groove 77 is provided on the inner wall of the connecting block 76. A switching component 78 for connecting different air pipes 75 is provided on the inner wall of the placement groove 77. The switching component 78 includes a connecting block 79 rotatably connected to the inner wall of the placement groove 77. A connecting groove 710 is provided on the inner wall of the connecting block 79. The connecting groove 710 is T-shaped. A driving shaft 711 is fixedly connected to the axis of the connecting block 79. The driving shaft 711 is rotatably connected to the inner wall of the connecting block 76. A micro motor 712 is fixedly connected to one end of the driving shaft 711 passing through the connecting block 76. The micro motor 712 is installed on the surface of the connecting block 76, and multiple controllers 69 are connected to the micro motor 712.

[0056] If the ball 63 falls into the left storage groove 66, the controller 69 in the left storage groove 66 controls the micro motor 712 to stop working. At this time, the air cylinder 71 is connected to one of the air bags 70 through the air supply pipe 75, and when the air flow in the tracheal model 3 flows, it cannot force the gas in the inflated air bag 70 to flow to the air cylinder 71.

[0057] If the ball 63 falls into the receiving groove 66 on the right, after a period of time (the time is generally 2-3 seconds), the gas in the air storage cylinder 71 has been completely injected into one of the air bags 70, and the controller 69 in the right receiving groove 66 controls the micro motor 712 to work, and the micro motor 712 drives the driving shaft 711 to rotate, and the driving shaft 711 drives the connecting block 79 to rotate. The connecting block 79 rotates to rotate the connecting groove 710 opened on the inner wall, thereby connecting the two air bags 70. At this time, the gas in the inflated air bag 70 is partially injected into the other air bag 70 through the air supply pipe 75 and the connecting groove 710, and when simulating coughing, the rapid airflow in the trachea model 3 will compress the inflated airflow to continue to inflate the other air bag 70, so that the degree of inflation of the other air bag 70 increases, thereby changing the patency and resistance of the trachea model 3.

[0058] Embodiment 2

[0059] In the second embodiment, other structures remain unchanged. The difference from the first embodiment is that a plurality of silicone curtains 713 are installed on the inner wall of the connecting groove 710. The plurality of silicone curtains 713 are respectively located at the ports of the connecting groove 710. In the first embodiment, since the silicone curtains 713 are not installed on the inner wall of the connecting groove 710, when the two airbags 70 are connected, due to the different pressures of the gases in the two airbags 70, the gas in the inflated airbag 70 will flow to the other airbag 70, resulting in the inflated airbag 70 adjusting the inner diameter of the tracheal model 3. The silicone curtain 713 is provided, and the friction between the silicone curtain 713 and the inner wall of the connecting groove 710 prevents the gas in the inflated airbag 70 from easily flowing into the other airbag 70. Only when the air pressure in the tracheal model 3 changes rapidly during coughing simulation, the squeezing of the gas inflated airbag 70 further increases the gas pressure in the inflated airbag 70, thereby causing the gas in the inflated airbag 70 to break through the closure of the silicone curtain 713 and flow into the other airbag 70, thereby changing the patency and resistance of the tracheal model 3.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lung demonstration model for ventilator teaching, comprising: A storage bottle (1), a lung model (2) and a trachea model (3), wherein the trachea model (3) is connected to the lung model (2), the lung model (2) is located inside the storage bottle (1), and one end of the trachea model (3) passes through the storage bottle (1) and is connected to the outside; The invention is characterized in that: it also comprises a base (4), wherein the base (4) is fixedly connected to the bottom of the storage bottle (1); An air pressure simulation mechanism (5), the air pressure simulation mechanism (5) being located inside the base (4), and the air pressure simulation mechanism (5) adjusting the air pressure inside the storage bottle (1); A switching mechanism (6), the switching mechanism (6) being located inside the base (4), the switching mechanism (6) being connected to the air pressure simulation mechanism (5), and the switching mechanism (6) controlling the air pressure simulation mechanism (5) to simulate air pressures in different states of the lungs; An airway obstruction mechanism (7), wherein the airway obstruction mechanism (7) is connected to the switching mechanism (6), and when the switching mechanism (6) controls the air pressure simulation mechanism (5) to simulate air pressures in different states of the lungs, the airway obstruction mechanism (7) adjusts the inner diameter of the trachea model (3); The air pressure simulation mechanism (5) comprises a rubber membrane (50) fixedly connected to the inner wall of the base (4), the rubber membrane (50) closes the opening at the bottom of the storage bottle (1), a pull rod (51) is fixedly connected to the bottom of the rubber membrane (50), an electric telescopic rod (52) is fixedly connected to the outside of the pull rod (51), and the electric telescopic rod (52) is installed inside the base (4); The switching mechanism (6) comprises a fixed box (60) installed in the base (4); a rolling bin (61) is provided on the inner wall of the fixed box (60); a transmission tube (62) is fixedly connected to the outer side of the fixed box (60); the transmission tube (62) is communicated with the rolling bin (61); an end of the transmission tube (62) away from the fixed box (60) passes through the base (4) and communicates with the outside; a ball (63) is provided on the inner wall of the rolling bin (61); a driving member (64) is provided below the ball (63) to push the ball (63) to roll on the inner wall of the rolling bin (61); and a path adjusting member (65) is provided on the inner wall of the rolling bin (61). A plurality of storage grooves (66) are provided at the bottom of the fixed box (60), the storage grooves (66) are connected to the rolling bin (61), a pressure plate (67) is installed on the inner wall of the plurality of storage grooves (66), a pressure sensor (68) and a controller (69) are installed on the surface of the pressure plate (67), the controller (69) is connected to the electric telescopic rod (52), the plurality of controllers (69) control the electric telescopic rod (52) to work at different frequencies and strokes, and a revealing member (610) is provided on the outer side of the fixed box (60), the revealing member (610) reveals which storage groove (66) the ball (63) falls into; The airway obstruction mechanism (7) comprises two air bags (70) fixedly connected to the inner wall of the trachea model (3); an air cylinder (71) is mounted on the surface of the storage bottle (1); a piston plate (72) is slidably connected to the inner wall of the air cylinder (71); one side of the piston plate (72) is fixedly connected to an electric telescopic rod three (73); the electric telescopic rod three (73) is fixedly connected to the inner wall of the air cylinder (71); the electric telescopic rod three (73) is connected to a controller (69); and a transmission member (74) is provided between the output end of the air cylinder (71) and the two air bags (70).

2. The lung demonstration model for teaching a ventilator according to claim 1, characterized in that: The driving member (64) comprises a driving plate (611) slidably connected to the inner wall of the rolling bin (61); the balls (63) enter the rolling bin (61) from the transmission tube (62) and fall onto the driving plate (611); a return spring (612) is fixedly connected to the bottom of the driving plate (611); the return spring (612) is fixedly connected to the inner wall of the rolling bin (61); a connecting plate (613) is fixedly connected to the outer side of the driving plate (611); the connecting plate (613) is slidably connected to the inner wall of the fixed box (60); a pressing column (614) is fixedly connected to one end of the connecting plate (613) that passes through the base (4); the pressing column (614) is slidably connected to the inner wall of the base (4).

3. The lung demonstration model for teaching a ventilator according to claim 1, characterized in that: The path adjustment member (65) comprises a plurality of rotating shafts (615) rotatably connected to the inner wall of the rolling bin (61), and rubber wheels (616) are fixedly connected to the outer sides of the rotating shafts (615), wherein the plurality of rubber wheels (616) are distributed in an inverted triangle.

4. The lung demonstration model for teaching a ventilator according to claim 1, characterized in that: The revealing member (610) comprises a plurality of output tubes (617) fixedly connected to the outside of the fixing box (60), the plurality of output tubes (617) being respectively connected to the corresponding receiving grooves (66), the end of the output tube (617) away from the fixing box (60) passing through the base (4) and connected to the outside, the inner wall of the fixing box (60) is slidably connected to a closing plate (618), the closing plate (618) closes the connection between the receiving groove (66) and the output tube (617), the top of the closing plate (618) is fixedly connected to a second electric telescopic rod (619), the second electric telescopic rod (619) being fixedly connected to the inner wall of the fixing box (60), and a control button (620) is installed at the end of each output tube (617) away from the fixing box (60), the control button (620) being connected to the second electric telescopic rod (619).

5. The lung demonstration model for teaching a ventilator according to claim 1, characterized in that: The transmission component (74) comprises three air delivery pipes (75), the three air delivery pipes (75) being connected to the air storage cylinder (71) and the two air bags (70) respectively, a connection block (76) being provided near one end of the three air delivery pipes (75), a placement groove (77) being provided on the inner wall of the connection block (76), and a switching component (78) for connecting different air delivery pipes (75) being provided on the inner wall of the placement groove (77).

6. The lung demonstration model for teaching a ventilator according to claim 5, characterized in that: The switching member (78) comprises a connecting block (79) rotatably connected to the inner wall of the placement groove (77); a connecting groove (710) is provided on the inner wall of the connecting block (79); the connecting groove (710) is T-shaped; a driving shaft (711) is fixedly connected to the axis of the connecting block (79); the driving shaft (711) is rotatably connected to the inner wall of the connecting block (76); one end of the driving shaft (711) passing through the connecting block (76) is fixedly connected to a micro motor (712); the micro motor (712) is mounted on the surface of the connecting block (76); and a plurality of controllers (69) are connected to the micro motors (712).

7. The lung demonstration model for teaching a ventilator according to claim 6, characterized in that: A plurality of silicone curtains (713) are installed on the inner wall of the communication groove (710), and the plurality of silicone curtains (713) are respectively located at the ports of the communication groove (710).

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