For medical care teaching equipment

Abstract

The invention relates to the technical field of medical teaching aids, and specifically discloses a medical care teaching device, comprising an arm model and a blood vessel model, and further comprising: a free cavity and a plurality of storage tanks, wherein the free cavity is opened inside the arm model, the storage tank is arranged on one side of the arm model, colloids with different rheological properties are stored in the plurality of storage tanks, the colloids in the storage tanks are used to be injected into the free cavity to change the degree of freeness of the blood vessel model, and the colloids in the plurality of different storage tanks are injected into the free cavity, so that the free states of a plurality of blood vessel models can be simulated, and the swing mechanism can change the different paths of the blood vessel models, and the free states and paths of the blood vessels are randomly combined according to the control mechanism, so that trainees will have a plurality of different and random blood vessel states for training during training, which can improve the comprehensive training ability of the trainees on the one hand, and can also make targeted changes to the puncture operation according to the changes in the simulation scene on the other hand.

Description

Technical Field

[0001] The invention relates to the technical field of medical teaching aids, in particular to a medical care teaching device. Background Art

[0002] The teaching model for medical care can simulate the real medical environment and operation process as much as possible, helping students master nursing skills and improve practical ability and professional quality. Radial artery puncture is widely used in arterial drug administration, arterial angiography, catheterization, etc., and is an important operation in clinical nursing.

[0003] The radial artery at the wrist is in the longitudinal groove between the radial flexor carpi tendon and the lower end of the radius. The radial artery pulsation can be felt above and below the radial styloid. In the actual puncture process, in order to ensure the accuracy of the puncture, it is often necessary to judge the direction of the radial artery with the fingertips, and determine the puncture position based on the direction. Obviously, the direction of the radial artery varies from patient to patient due to different physiques. In addition, the radial artery has a certain amount of free space under the skin. Clinically, the degree of blood vessel freedom of each patient is different. For example, the degree of blood vessel freedom of patients with obvious weight loss and loose subcutaneous tissue will increase. During the puncture, in addition to judging the direction of the radial artery, the free blood vessels also need to be clamped and fixed to avoid puncture failure.

[0004] The existing radial artery puncture devices mostly have fixed blood vessel conditions and can only simulate a single clinical situation. They have a relatively narrow application range and are difficult to effectively improve the comprehensive response capabilities of trainees.

[0005] To this end, we propose a device for teaching medical care. Summary of the invention

[0006] The purpose of the present invention is to provide a medical care teaching device to solve the problem mentioned in the above background technology that most of the existing teaching models can only simulate a single clinical situation.

[0007] To achieve the above object, the present invention provides the following technical solution: a medical care teaching device, comprising an arm model and a blood vessel model, wherein the blood vessel model is arranged inside the arm model, and further comprising:

[0008] A free cavity and a plurality of storage tanks, wherein the free cavity is opened inside the arm model, and the storage tanks are arranged on one side of the arm model, wherein colloids with different rheological properties are stored in the plurality of storage tanks, and the colloids in the storage tanks are used to be injected into the free cavity to change the degree of freeness of the blood vessel model;

[0009] A swing mechanism, which is installed at the end of the arm model and is used to adjust the direction of the blood vessel model;

[0010] The control mechanism is installed at the bottom of the arm model, and the control mechanism controls the random combination of the direction of the blood vessel model and the degree of freedom of the blood vessel model.

[0011] Among them, a transverse box is installed at the bottom of the arm model, a longitudinal box is fixedly installed at the end of the transverse box, the arm model is fixedly connected to the transverse box and the longitudinal box respectively, and a colloid injection mechanism is installed inside the transverse box. The colloid injection mechanism is used to automatically inject colloids in different storage tanks into the free cavity.

[0012] Among them, the colloid injection mechanism includes a first multi-way tube installed on the top of the storage tank, and the branches of the first multi-way tube are respectively installed with electrically controlled valves. The other end of the first multi-way tube is connected to a first pressure pump, and the output end of the first pressure pump is installed with an input pipe, which is connected to the inside of the free cavity, and the other side of the free cavity is connected with an output pipe.

[0013] Among them, an observation tank made of transparent material is fixedly installed on the output pipe, a perspective hole is opened on the side of the horizontal box, the observation tank is located on the inner side of the perspective hole, and a recovery pipe is fixedly installed on the other end of the observation tank. A second multi-way pipe is installed at the end of the recovery pipe. The branches of the second multi-way pipe are respectively connected to each storage tank, and hand valves are installed on the branches of the second multi-way pipe.

[0014] The cross section of the free cavity is a triangle, the opening of the free cavity close to the distal end is small, and the swing mechanism is installed on the side of the free cavity with a large opening.

[0015] Among them, the swing mechanism includes an arc groove opened at the end of the free cavity, an arc plate is slidably installed inside the arc groove, a connecting sleeve is fixedly installed inside the arc plate, the blood vessel model is fixed inside the connecting sleeve, a swing rod is fixedly installed on the outside of the connecting sleeve, and a motor is fixedly installed on the end of the swing rod away from the connecting sleeve, and the motor is fixed on the inner side of the longitudinal box.

[0016] Among them, a partition is fixedly installed inside the longitudinal box body, a water tank is provided at the bottom of the partition, a second pressure pump is fixedly installed on the top of the partition, the water inlet end of the second pressure pump is connected to the water tank, and the water outlet end of the second pressure pump is connected to a hose, which is connected to the blood vessel model.

[0017] Among them, the control mechanism includes a control panel and a control button installed inside the horizontal box. The control panel controls the cyclic opening of the electric control valve and the reciprocating rotation of the motor. The control button controls the cyclic opening of the electric control valve and the reciprocating swing time of the motor.

[0018] Among them, a random trigger mechanism is installed on the side of the horizontal box body, and the random trigger mechanism includes a through hole opened on the side of the horizontal box body, a circular ring is fixedly installed in the through hole, a circular notch is formed between the circular ring and the horizontal box body, a rotating rod is rotatably installed in the circular ring, a connecting frame is fixedly installed on the end of the rotating rod, and a plurality of telescopic rods are fixedly installed on the end of the connecting frame. When the telescopic rod is extended, the control button is pressed, and the reset time of each telescopic rod is different.

[0019] Among them, the telescopic rod includes a sleeve fixed at the end of the connecting frame, a piston is fixedly installed inside the sleeve, the friction coefficient between each piston and the inner wall of the sleeve is different, a pressing rod is fixedly installed at one end of the piston, and a push rod is fixedly installed at the other end of the piston. The push rod and the sleeve are slidably connected, part of the push rod is located in the notch, and part of the push rod is located in the sleeve, and a spring is provided on the outside of the push rod located in the sleeve.

[0020] The present invention has at least the following beneficial effects:

[0021] The colloids in multiple different storage tanks are injected into the free cavity to simulate the free states of multiple blood vessel models, and the swing mechanism can change the different paths of the blood vessel models. The free state and path of the blood vessels are randomly combined according to the control mechanism. Therefore, trainees will have a variety of different and random blood vessel states for training. On the one hand, it can improve the comprehensive training ability of trainees, and on the other hand, it can also make targeted changes to the puncture operation according to the changes in the simulation scene. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall first-view structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall structure of the present invention from a second viewing angle;

[0024] Figure 3 This is a schematic diagram of the internal structure of the transverse box of the present invention;

[0025] Figure 4 It is a schematic diagram of the cross-sectional structure of the free cavity of the present invention;

[0026] Figure 5 This is a schematic diagram of the end structure of the arm model of the present invention;

[0027] Figure 6 It is a schematic diagram of the cross-sectional structure of the arc groove of the present invention;

[0028] Figure 7 It is a schematic diagram of the internal structure of the longitudinal box body of the present invention;

[0029] Figure 8 This is a schematic diagram of the pipe connection structure of the storage tank of the present invention;

[0030] Fig. 9 This is a schematic diagram of the random trigger mechanism of the present invention;

[0031] Fig.10 It is a schematic diagram of the internal structure of the telescopic rod of the present invention.

[0032] In the figure: 1. arm model; 2. blood vessel model; 3. free cavity; 4. storage tank; 5. swing mechanism; 6. control mechanism; 7. transverse box; 8. longitudinal box; 9. colloid injection mechanism; 10. first multi-way pipe; 11. electric control valve; 12. first pressure pump; 13. input pipe; 14. output pipe; 15. observation tank; 16. perspective hole; 17. recovery pipe; 18. second multi-way pipe; 19. hand lever valve; 20. arc groove ; 21. arc plate; 22. connecting sleeve; 23. swing rod; 24. motor; 25. partition; 26. second pressure pump; 27. water tank; 28. hose; 29. ​​control board; 30. control button; 31. random trigger mechanism; 32. through hole; 33. ring; 34. notch; 35. rotating rod; 36. connecting frame; 37. telescopic rod; 38. sleeve; 39. piston; 40. pressing rod; 41. push rod; 42. spring. DETAILED DESCRIPTION

[0033] 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.

[0034] Embodiment 1

[0035] See also Figures 1 to 10 The present invention provides a technical solution: a medical care teaching device, comprising: an arm model 1 and a blood vessel model 2, wherein a horizontal box 7 is fixedly installed at the bottom of the arm model 1, and a longitudinal box 8 is fixed at the end of the horizontal box 7, the horizontal box 7 and the longitudinal box 8 support and fix the arm model 1, and the blood vessel model 2 is located inside the arm model 1. Specifically, a free cavity 3 is opened inside the blood vessel model 2, and the cross-section of the free cavity 3 is triangular. The blood vessel model 2 is located in the free cavity 3, that is, one end of the blood vessel model 2 is fixed to the side with a small opening of the free cavity 3, that is, near the wrist wrinkle, and the other end of the blood vessel model 2 is installed with a hose 28, and the other end of the hose 28 is fixed with a second pressure pump 26, the second pressure pump 26 is located on the partition 25 in the longitudinal box 8, and the water inlet end of the second pressure pump 26 is located in the water storage tank 27 at the bottom of the partition 25.

[0036] Through the above technical solution, the second pressure pump 26 draws water from the water tank 27 and injects it into the blood vessel model 2 through the hose 28, so that the blood vessel model 2 becomes full. When the second pressure pump 26 draws water from the blood vessel model 2, the filling state of the blood vessel model 2 weakens. Therefore, the working frequency of the second pressure pump 26, that is, the pumping and absorbing of water are performed alternately, so the pulsation of the blood vessel can be simulated. When training, the trainee can touch the pulsation at the wrist line with the fingertips and judge the direction of the simulated blood vessel according to the pulsation. The distance of the blood vessel model 2 from the distal end to the proximal end on the skin surface gradually increases. Therefore, the pulsation intensity of the blood vessel model 2 is the largest at the wrist line, and the pulsation gradually weakens as it moves toward the proximal end of the blood vessel model 2, making it more in line with the anatomical structure of the human body and more realistic.

[0037] A plurality of storage tanks 4 are installed inside the transverse box 7. In the present embodiment, the number of storage tanks 4 is set to three groups. Colloids with different rheological properties are stored in each group of storage tanks 4. The rheological properties of the colloids can be adjusted by a modifier to change the viscosity and fluidity of the colloid material. The colloids in the storage tanks 4 can be transported to the free cavity 3. When the colloid with poor rheological properties is injected into the free cavity 3, the free degree of the vascular model 2 is smaller. When the colloid with better rheological properties is injected into the free cavity 3, the free degree of the vascular model 2 is greater.

[0038] It should be further explained that the colloid in the storage tank 4 is transported to the free cavity 3 through the colloid injection mechanism 9, that is, a first multi-way tube 10 is installed on the three storage tanks 4, and the branches of the first multi-way tube 10 are respectively connected to the three storage tanks 4, and an electric control valve 11 is installed on each branch pipe, and the other end of the first multi-way tube 10 is connected to a first pressure pump 12, and the output end of the first pressure pump 12 is connected to an input pipe 13, and the input pipe 13 is connected to the free cavity 3. At the same time, an output pipe 14 is also connected to the other side of the free cavity 3, and the output pipe 14 is used to export the colloid from the free cavity 3.

[0039] Through the above technical solution, when one of the electric-controlled valves 11 is opened, the first pressure pump 12 can transport the colloid in the storage tank 4 corresponding to the open position of the electric-controlled valve 11 to the free cavity 3 through the input pipe 13 when working, thereby being able to adjust the free state of different blood vessel models 2.

[0040] It should be added that an observation tank 15 made of transparent material is fixedly installed on the output tube 14, and a perspective hole 16 is opened on the horizontal box 7 adjacent to the observation tank 15, through which the trainee can observe the state of the colloid in the observation tank 15. Secondly, a recovery tube 17 is fixedly installed at the bottom of the observation tank 15, and the end of the recovery tube 17 away from the observation tank 15 is connected to a second multi-way tube 18, and the branches of the second multi-way tube 18 are respectively connected to the storage tank 4, and a hand valve 19 is fixedly installed on each branch. Therefore, after the first pressure pump 12 injects colloid into the free cavity 3, the excess colloid will enter the observation tank 15, the recovery tube 17, and the second multi-way tube 18. When the training is completed The training personnel observe the rheological properties of the colloid in the observation tank 15 through the perspective hole 16, and open the hand valve 19 on the storage tank 4 accordingly, so that the colloid can flow back into the storage tank 4 to achieve the recycling of the colloid. Considering the poor fluidity of the colloid, the recovery pipe 17 and the second multi-way pipe 18 are both arranged to be inclined, or a pressure relief valve is installed on the input end pipeline of the first pressure pump 12. When the colloid is recovered, the pressure relief valve is opened. At this time, the first pressure pump 12 does not pump colloid into the free cavity 3 during the pumping process, but gas. The gas enters the free cavity 3 to increase the pressure in the free cavity 3, so that the recovered colloid flows back to the storage tank 4 under the action of air pressure.

[0041] The end of the arm model 1 is also equipped with a swing mechanism 5, which is used to swing the blood vessel model 2 in the free cavity 3 to change the direction of the simulated blood vessel. Specifically, an arc groove 20 is firstly provided on the side with a larger opening of the free cavity 3, and an arc plate 21 is slidably installed inside the arc groove 20, and a connecting sleeve 22 is fixedly installed inside the arc plate 21. The blood vessel model 2 is fixed in the connecting sleeve 22, and a swing rod 23 is fixedly installed on the outside of the connecting sleeve 22. A motor 24 is fixedly installed on the end of the swing rod 23 away from the connecting sleeve 22. The motor 24 is fixed on the inner side of the longitudinal box 8. When the motor 24 swings When the motor 24 moves, the swing rod 23 is driven to swing, and the connecting sleeve 22 and the blood vessel model 2 in the connecting sleeve 22 are driven to swing at the same time. Therefore, the blood vessel model 2 can be driven to change its position arbitrarily in the free cavity 3 by reciprocating the motor 24 at a specific angle. The curvature of the arc plate 21 is much larger than the side with a larger opening of the free cavity 3, and the curvature of the arc groove 20 is much larger than the curvature of the plate. Therefore, when the arc plate 21 swings in the arc groove 20, the arc plate 21 will always seal the opening of the free cavity 3. In addition, the rheological property of the colloid itself is poor, so the colloid can be effectively prevented from leaking out during swinging.

[0042] A control mechanism 6 is installed inside the transverse box 7. The control mechanism 6 can control the degree of freedom of the blood vessel model 2 and the direction of the blood vessel model 2 to be randomly combined. Specifically, the control mechanism 6 includes a control board 29 fixed in the transverse box 7. The control board 29 controls the alternating opening of the electric control valve 11, that is, when multiple electric control valves 11 are opened alternately, and when one of the electric control valves 11 is opened, the remaining electric control valves 11 are in a closed state. At the same time, the control board 29 also controls the swing angle and swing time of the motor 24. When the control button 30 located in the transverse box 7 is pressed, the electric control valve 11 and the motor 24 start working. When the control button 30 is released, the electric-controlled valve 11 and the motor 24 stop working. When the electric-controlled valve 11 stops opening alternately, one of the multiple electric-controlled valves 11 opens. When the motor 24 stops working, the motor 24 adjusts the blood vessel model 2 to any angle within the swing range. Therefore, according to the length of time the control button 30 is pressed, the degree of freedom and the direction of the blood vessel model 2 can be arbitrarily combined. Therefore, the trainees can be trained in a variety of simulation scenarios during training, which can improve the comprehensive response ability of the trainees.

[0043] In summary, when in use, the trainee presses the control button 30 in advance, and releases the control button 30 after pressing for a period of time. The pressing time is random and not fixed. When pressing the control button 30, the degree of freeness and the direction of the blood vessel model 2 change randomly. When releasing the control button 30, the state of the blood vessel is finally fixed. At this time, the trainee turns on the first pressure pump 12 and the second pressure pump 26. The first pressure pump 12 injects colloid into the free cavity 3, and the second pressure pump 26 injects water into the blood vessel model 2. The trainee touches the pulsation at the wrist line with the fingertips to pre-judge the initial point of the simulated blood vessel, and then moves the blood vessel from the initial point to the proximal end. Move one centimeter to determine whether there is pulsation. If there is no pulsation, it means that the direction of the blood vessel is unclear and it is necessary to determine again. When determining again, continue to touch around the second touch point until you feel the pulsation. Then connect the first pulsation point and the second pulsation point into a straight line. The direction of the straight line is the direction of the blood vessel model 2. When the direction of the blood vessel model 2 is determined, press the blood vessel model 2 to fix it. The pressing force is adaptively adjusted according to the degree of blood vessel freedom to avoid sliding of the free blood vessel model 2 during puncture. When the blood vessel model 2 is fixed, perform the puncture operation on the determined path of the blood vessel model 2.

[0044] Embodiment 2

[0045] Since the frequency of the reciprocating swing of the arc plate 21 driven by the motor 24 should not be too large, otherwise the friction between the arc plate 21 and the arc groove 20 will cause serious wear between the two, and leakage may occur. Therefore, in order to ensure that the swing rod 23 can swing for a cycle, the running time of the motor 24 will increase, which means that the trainee needs to hold down the control button 30 for a longer time.

[0046] Therefore, a random trigger mechanism 31 is installed on the side of the horizontal box body 7, and the random trigger mechanism 31 can randomly change the working time of the control button 30. Specifically, a through hole 32 is opened on the side of the horizontal box body 7, and a ring 33 is fixedly installed in the through hole 32. A gap 34 is formed between the ring 33 and the horizontal box body 7. A rotating rod 35 is rotatably installed inside the ring 33, and a connecting frame 36 is fixedly installed at the end of the rotating rod 35. A plurality of telescopic rods 37 are fixed on the connecting frame 36. When the telescopic rod 37 is extended, the control button 30 is pressed. However, the resetting time of each telescopic rod 37 is different. Specifically, the telescopic rod 37 includes a sleeve 38 fixed to the end of the connecting frame 36, and a piston 39 is slidably installed in the sleeve 38. The friction coefficient between each piston 39 and the sleeve 38 is different. A push rod 41 is fixedly installed at one end of the piston 39, and a pressing rod 40 is fixedly installed at the other end of the piston 39. The push rod 41 is located in the notch 34. The pressing rod 40 and the push rod 41 are both slidably connected to the sleeve 38, and a spring 42 is sleeved on the outside of the push rod 41 located in the sleeve 38.

[0047] With the above technical solution, when in use, the rotating rod 35 is manually rotated, and the rotating rod 35 will synchronously drive the connecting frame 36 and the telescopic rod 37 to rotate. The rotating rod 35 stops at a random time, so there will be a random telescopic rod 37 located near the control button 30. The operator only needs to adjust the position of the telescopic rod 37 to align it with the control button 30, and then push the push rod 41. When the push rod 41 is pushed, the piston 39 is driven to slide in the sleeve 38, and the spring 42 is stretched at the same time. When the piston 39 slides, it drives the pressing rod 40 to press the control button 30. After pressing, the operator can release the push rod 41, and the piston 39 will reset under the action of the spring 42. The reset requires overcoming the friction between the piston 39 and the sleeve 38. Since the friction between each piston 39 and the sleeve 38 is different, the reset time is also different, thereby realizing random control of the pressing time of the control button 30. When in use, the trainer only needs to rotate the rotating rod 35 and press the push rod 41, and there is no need to stay near the arm model 1 for a long time. More time can be spent on preparing the training instrument, which is more convenient when in use.

[0048] 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.

[0049] 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 medical care teaching device, comprising an arm model (1) and a blood vessel model (2), wherein the blood vessel model (2) is arranged inside the arm model (1), and is characterized in that: Also includes: A free cavity (3) and a plurality of storage tanks (4), wherein the free cavity (3) is opened inside the arm model (1), and the storage tank (4) is arranged on one side of the arm model (1); colloids with different rheological properties are stored in the plurality of storage tanks (4); the colloids in the storage tanks (4) are used to be injected into the free cavity (3) to change the degree of freeness of the blood vessel model (2); A transverse box (7) is installed at the bottom of the arm model (1), a longitudinal box (8) is fixedly installed at the end of the transverse box (7), the arm model (1) is connected to the transverse box (7) and the longitudinal box (8) respectively, a colloid injection mechanism (9) is installed inside the transverse box (7), the colloid injection mechanism (9) is used to automatically inject colloids in different storage tanks (4) into the free cavity (3), the colloid injection mechanism (9) comprises a first multi-way pipe (10) installed on the top of the storage tank (4), the branch pipes of the first multi-way pipe (10) are respectively installed with electric control valves (11), the other end of the first multi-way pipe (10) is connected to a first pressure pump (12), the output end of the first pressure pump (12) is installed with an input pipe (13), the input pipe (13) is connected to the inside of the free cavity (3), and the other side of the free cavity (3) is connected to an output pipe (14); A swing mechanism (5), the swing mechanism (5) being mounted at the end of the arm model (1), the swing mechanism (5) being used to adjust the direction of the blood vessel model (2), the cross section of the free cavity (3) being triangular, the free cavity (3) having a smaller opening near the distal end, the swing mechanism (5) being mounted on the side of the free cavity (3) having a larger opening, the swing mechanism (5) comprising an arc groove (20) provided at the end of the free cavity (3), an arc plate (21) being slidably mounted inside the arc groove (20), a connecting sleeve (22) being fixedly mounted inside the arc plate (21), the blood vessel model (2) being fixed inside the connecting sleeve (22), a swing rod (23) being fixedly mounted outside the connecting sleeve (22), a motor (24) being fixedly mounted on the end of the swing rod (23) away from the connecting sleeve (22), the motor (24) being fixedly mounted on the inner side of the longitudinal box (8); A control mechanism (6) is installed at the bottom of the arm model (1), and the control mechanism (6) controls the direction of the blood vessel model (2) and the degree of freedom of the blood vessel model (2) to be randomly combined.

2. The medical care teaching device according to claim 1, characterized in that: An observation tank (15) made of a transparent material is fixedly mounted on the output pipe (14); a perspective hole (16) is provided on the side of the transverse box body (7); the observation tank (15) is located inside the perspective hole (16); a recovery pipe (17) is fixedly mounted on the other end of the observation tank (15); a second multi-way pipe (18) is mounted on the end of the recovery pipe (17); branches of the second multi-way pipe (18) are respectively connected to each storage tank (4); and hand valves (19) are mounted on the branches of the second multi-way pipe (18).

3. The medical care teaching device according to claim 1, characterized in that: A partition (25) is fixedly installed inside the longitudinal box body (8), a water storage tank (27) is provided at the bottom of the partition (25), a second pressure pump (26) is fixedly installed on the top of the partition (25), a water inlet end of the second pressure pump (26) is connected to the water storage tank (27), a water outlet end of the second pressure pump (26) is connected to a hose (28), and the hose (28) is connected to the blood vessel model (2).

4. The medical care teaching device according to claim 2, characterized in that: The control mechanism (6) comprises a control panel (29) and a control button (30) installed inside the transverse box (7); the control panel (29) controls the cyclic opening of the electric control valve (11) and the reciprocating rotation of the motor (24); and the control button (30) controls the cyclic opening of the electric control valve (11) and the reciprocating swing time of the motor (24).

5. The medical care teaching device according to claim 4, characterized in that: A random trigger mechanism (31) is installed on the side of the transverse box (7), and the random trigger mechanism (31) comprises a through hole (32) opened on the side of the transverse box (7), a circular ring (33) is fixedly installed in the through hole (32), a circular notch (34) is formed between the circular ring (33) and the transverse box (7), a rotating rod (35) is rotatably installed in the circular ring (33), a connecting frame (36) is fixedly installed at the end of the rotating rod (35), and a plurality of telescopic rods (37) are fixedly installed at the end of the connecting frame (36), and the control button (30) is pressed when the telescopic rod (37) is extended, and the reset time of each telescopic rod (37) is different.

6. The medical care teaching device according to claim 5, characterized in that: The telescopic rod (37) comprises a sleeve (38) fixed to the end of the connecting frame (36), a piston (39) is fixedly mounted inside the sleeve (38), the friction coefficient between each piston (39) and the inner wall of the sleeve (38) is different, a pressing rod (40) is fixedly mounted on one end of the piston (39), and a push rod (41) is fixedly mounted on the other end of the piston (39), the push rod (41) and the sleeve (38) are slidably connected, part of the push rod (41) is located in the notch (34), and part of the push rod (41) is located in the sleeve (38), and a spring (42) is sleeved on the outside of the push rod (41) located in the sleeve (38).

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