Uterine orifice three-dimensional expansion model for teaching

Abstract

The invention belongs to the field of teaching models, particularly relates to a three-dimensional uterine orifice expansion model for teaching, and aims to solve the problems that an existing model cannot dynamically evolve the open size of a uterine orifice and synchronously give corresponding accurate numerical value display, mastering of key skills of students is limited, and midwifery skills cannot be improved. The body model comprises a body model, an examination touch display and a control touch display. A pushing mechanism is arranged on the cross-shaped supporting frame, the pushing mechanism is used for pushing an opening assembly to move towards the uterine opening direction of the lower body model, an opening assembly is arranged on the pushing mechanism, and the opening assembly is used for opening the uterine opening of the lower body model. The dynamic process and the form change of real uterine mouth expansion can be highly simulated, the expansion amplitude can be flexibly adjusted according to teaching requirements, a teacher can conveniently carry out deep explanation and analysis according to data, and the teaching interactivity and the teaching quality are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of teaching models, in particular to a three-dimensional uterine cervix expansion model for teaching. Background Art

[0002] The flat delivery cervix model for teaching is an intuitive teaching aid designed specifically for obstetrics and gynecology teaching. It presents the key changes of the cervix during delivery in a flat form. Through a layered or staged design, it clearly shows the tightly closed state of the cervix when it is not dilated.

[0003] At present, the existing three-dimensional cervical dilation models used in teaching are usually flat models. Although they can show the basic morphological structure of the cervix, they cannot dynamically evolve the size of the cervical opening and simultaneously give corresponding accurate numerical displays. It is difficult for students to intuitively feel the dynamic changes in the process of cervical dilation, and teachers also lack quantitative data to assist teaching. This greatly limits the in-depth explanation of cervical dilation knowledge in clinical teaching and students' mastery of key skills, which is not conducive to improving midwifery skills.

[0004] In response to the above problems, the present invention document proposes a three-dimensional uterine cervix expansion model for teaching, which is used to solve the above problems. Summary of the Invention

[0005] The present invention provides a three-dimensional uterine dilation model for teaching, which solves the shortcomings of the existing technology that the size of the uterine opening cannot be dynamically evolved and the corresponding accurate numerical display cannot be given simultaneously, which limits the trainees' mastery of key skills and is not conducive to improving midwifery skills.

[0006] The present invention provides the following technical solutions:

[0007] A three-dimensional uterine cervix expansion model for teaching, comprising:

[0008] A lower body model, an assessment touch display, and a control touch display, wherein red and green indicator lights are electrically provided on both sides of the assessment touch display, and a cross support frame is fixedly provided on four sides of the inner wall of the lower body model;

[0009] The cross support frame is provided with a pushing mechanism for pushing the expansion component to move toward the cervix of the lower body model. The pushing mechanism is provided with an expansion component for expanding the cervix of the lower body model.

[0010] In a possible design, the pushing mechanism includes two guide rods symmetrically and slidingly arranged on both sides of the cross support frame, the front ends of the two guide rods are fixedly provided with the same support plate, the rear ends of the two guide rods are fixedly provided with limit blocks, and an electric push rod 1 is embedded in the rear side of the cross support frame, the output end of the electric push rod 1 is fixedly connected to the rear side of the support plate, and a plurality of evenly distributed contacts are fixedly provided on one side of the support plate.

[0011] In one possible design, the expansion assembly includes a connecting frame fixedly arranged on the front side of the support plate, a bidirectional screw is rotatably arranged on the inner side of the connecting frame, and the two ends of the bidirectional screw with different threads are respectively threadedly connected to a moving block, and the two moving blocks are slidably arranged inside the connecting frame, and a shift frame is fixedly arranged on the front side of the two moving blocks, and a motor is fixedly arranged on one side of the connecting frame, and the output shaft of the motor is fixedly connected to the bidirectional screw.

[0012] In one possible design, a slide groove is provided on the rear side of the connecting frame, a slider is slidably provided inside the slide groove, the front side of the slider is fixedly connected to one of the moving blocks, and a contact switch is embedded in the other side of the slider.

[0013] In a possible design, a hook rack is fixedly provided on the front side of the two shifting racks.

[0014] In a possible design, two fixing seats are symmetrically fixed on the front and rear sides of the lower body model, and a connecting seat is provided between the two fixing seats on the same side. The assessment touch display and the control touch display are respectively fixed on the bottom of the two connecting seats, and tooth grooves are provided on the inner sides of both sides of the two connecting seats. Bolts are passed through one side of the two fixing seats on the same side, and a spring is sleeved on the outside of each bolt. A toothed disc is sleeved on the outside of each bolt, and two ends of the spring are respectively abutted against the side close to the bolt and the toothed disc, and the tooth groove is adapted to the toothed disc and can be disengaged. The bolt passes through the fixing seat and is threadedly connected to the connecting seat.

[0015] In one possible design, a base is provided at the bottom of the lower body model, and two fixing frames are symmetrically fixed on the top of the base at the rear side. Support columns are rotatably provided on the inner sides of the two fixing frames, and the two support columns are respectively fixedly connected to the bottom of the lower body model. Two electric push rods 2 are hingedly provided on both sides of the front side of the base, and the output ends of the two electric push rods 2 are respectively hinged to the two sides of the lower body model.

[0016] In a possible design, the bottom of the base is rectangular and fixed with four anti-slip pads, and the bottoms of the four anti-slip pads are all provided with anti-slip stripes.

[0017] The beneficial effects of the present invention are:

[0018] The present invention combines the expansion component with the contact switch and contacts, which can not only highly simulate the dynamic process and morphological changes of real cervical dilation, but also flexibly adjust the expansion amplitude according to teaching needs. It not only provides an accurate quantitative reference for teaching demonstrations, allowing students to understand the amplitude changes of cervical dilation more intuitively and accurately, but also facilitates teachers to conduct in-depth explanations and analysis based on data, effectively improving teaching interactivity and teaching quality.

[0019] In the present invention, an assessment touch display and a control touch display are set. The control touch display can accurately control the electric push rods, motors and other components, and realize the flexible setting and dynamic adjustment of parameters such as the degree of cervical dilation and the model display angle to meet the needs of diverse teaching scenarios. The assessment touch display focuses on student assessment. Students can input judgment data on the cervical dilation on it. The system compares it with the target parameters set by the control touch display, and uses red and green indicator lights to intuitively feedback the correctness of the answer. The two work together to ensure the accuracy and interactivity of teaching, strengthen the assessment function, and effectively improve the teaching quality and student learning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall front view of a three-dimensional uterine cervix dilation model for teaching provided by an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall rear view structure of a three-dimensional cervical dilation model for teaching provided by an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of the expanded structure of the assessment touch display and the control touch display of a three-dimensional uterine cervix dilation model for teaching provided by an embodiment of the present invention;

[0023] Figure 4 A schematic cross-sectional view of the lower body model of a three-dimensional uterine cervix expansion model for teaching provided by an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the cross-support frame upper component separation and the cross-sectional structure of the connecting frame of a three-dimensional uterine cervix dilation model for teaching provided by an embodiment of the present invention;

[0025] Figure 6 A schematic diagram of the enlarged structure of part A of a three-dimensional uterine cervix expansion model for teaching provided by an embodiment of the present invention

[0026] Figure 7 This is a schematic diagram of the separation structure of the fixing base and the connecting base of a three-dimensional uterine cervix expansion model for teaching provided by an embodiment of the present invention.

[0027] Reference numerals:

[0028] 1. Lower body model; 2. Cross support frame; 3. Guide rod; 4. Limit block; 5. Electric push rod 1; 6. Support plate; 7. Contact; 8. Connecting frame; 9. Bidirectional screw; 10. Moving block; 11. Shifting frame; 12. Hook frame; 13. Motor; 14. Slide; 15. Slider; 16. Contact switch; 17. Fixed seat; 18. Connecting seat; 19. Tooth groove; 20. Bolt; 21. Spring; 22. Tooth disc; 23. Assessment touch display; 24. Control touch display; 25. Indicator light; 26. Base; 27. Fixed frame; 28. Support column; 29. ​​Electric push rod 2; 30. Anti-slip pad. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described below with reference to the accompanying drawings.

[0030] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection", and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct connection or an indirect connection through an intermediate medium. Here, "fixed" means that the two are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0031] Example 1

[0032] Reference Figure 1-7 A three-dimensional cervical dilation model for teaching includes: a lower body model 1, an assessment touch display 23, a control touch display 24, a pushing mechanism, a spreading component, an angle adjustment component, etc. The lower body model 1 serves as the core display component, and the same cross support frame 2 is fixedly set on the four sides of its inner wall to provide an installation basis for the pushing mechanism and the spreading component.

[0033] The assessment touch display 23 and the control touch display 24 are the operation and assessment interaction parts of the model. Two fixing seats 17 are symmetrically fixed on the front and back sides of the lower body model 1, and a connecting seat 18 is provided between the two fixing seats 17 on the same side. The assessment touch display 23 and the control touch display 24 are respectively fixed at the bottom of the two connecting seats 18. Tooth grooves 19 are provided on the inner sides of both sides of the two connecting seats 18. Bolts 20 are passed through one side of the two fixing seats 17 on the same side. A spring 21 is sleeved on the outside of each bolt 20. A tooth disk 22 is sleeved on the outside of each bolt 20. The two ends of the spring 21 are respectively against the side close to the bolt 20 and the tooth disk 22. The tooth groove 19 is adapted to the tooth disk 22 and can be disengaged. The bolt 20 passes through the fixing seat 17 and is threadedly connected to the connecting seat 18. When the assessment touch display 23 and the control touch display 24 need to be used, hold the assessment touch display 23 or the control touch display with your fingers. The groove at the bottom of the device 24 is then lifted, and the assessment touch display 23 and the control touch display 24 are lifted, and an upward force is applied. The upward lifting force overcomes the meshing force between the toothed disc 22 and the tooth groove 19, so that the assessment touch display 23 or the control touch display 24 rotates through the hinge point of the connecting seat 18 and the fixing seat 17. During the rotation process, the tooth groove 19 will slide relative to the toothed disc 22 to form an interlaced state. At this time, the spring 21 is compressed. When the teeth and grooves between the toothed disc 22 and the tooth groove 19 are relative, the spring 21 will push the toothed disc 22 to engage with the tooth groove 19, and continue to lift the assessment touch display 23 or the control touch display 24 until it is adjusted to the optimal angle for use. Stop applying external force, and the spring 21 will restore its deformation, pushing the toothed disc 22 to engage with the tooth groove 19 again, fixing the assessment touch display 23 or the control touch display 24 at this angle. Red and green indicator lights 25 are electrically provided on both sides of the assessment touch display 23 to display the student assessment results.

[0034] The pushing mechanism is arranged on the cross support frame 2, and is used to push the expansion component to move toward the cervix of the lower body model 1. It includes two guide rods 3 that are symmetrically and slidingly arranged on both sides of the cross support frame 2. The front ends of the two guide rods 3 are fixed with the same support plate 6, and the rear ends of the two guide rods 3 are fixed with limit blocks 4 to prevent the guide rods 3 from sliding out of the cross support frame 2. An electric push rod 5 is embedded in the rear side of the cross support frame 2. The output end of the electric push rod 5 is fixedly connected to the rear side of the support plate 6. The support plate 6 can be driven to move by the extension and retraction of the electric push rod 5. A plurality of evenly distributed contacts 7 are fixedly provided on one side of the support plate 6. The interval between the multiple contacts 7 is one millimeter, which is used to cooperate with the contact switch 16 to realize distance measurement.

[0035] The expansion component is arranged on the pushing mechanism, and is used to expand the cervix of the lower body model 1. The expansion component includes a connecting frame 8 fixedly arranged on the front side of the support plate 6. A bidirectional screw rod 9 is rotatably arranged on the inner side of the connecting frame 8. The two ends of the bidirectional screw rod 9 with different threads are respectively threadedly connected with a moving block 10. The two moving blocks 10 are both slidably arranged inside the connecting frame 8 to ensure that the moving block 10 can only move axially along the bidirectional screw rod 9. The front sides of the two moving blocks 10 are fixedly provided with a shifting frame 11, and the front sides of the two shifting frames 11 are fixedly provided with a hook frame 12 for directly contacting and expanding the cervix. A motor 13 is fixedly provided on one side of the connecting frame 8. The output shaft of the motor 13 is fixedly connected to the bidirectional screw rod 9. The bidirectional screw rod 9 is driven to rotate by the motor 13, thereby realizing the direction or opposite movement of the two moving blocks 10.

[0036] A slide groove 14 is provided on the rear side of the connecting frame 8, and a slider 15 is slidingly provided inside the slide groove 14. The front side of the slider 15 is fixedly connected to one of the moving blocks 10, so that the slider 15 moves with the moving block 10. A contact switch 16 is embedded on the other side of the slider 15. The contact switch 16 can contact the contact 7 on the support plate 6. When the contact switch 16 contacts different contacts 7, the moving distance of the slider 15 can be determined, and then the size of the cervical dilation can be determined.

[0037] Example 2

[0038] Based on the first embodiment, the second embodiment also includes

[0039] Reference Figure 1-3 , a teaching uterine cervix three-dimensional expansion model, comprising:

[0040] The bottom of the lower body model 1 is provided with a base 26. The top of the base 26 is located at the rear side and is symmetrically fixed with two fixing frames 27. The inner sides of the two fixing frames 27 are rotatably provided with support columns 28. The two support columns 28 are respectively fixedly connected to the bottom of the lower body model 1 so that the lower body model 1 can rotate around the fixing frames 27 through the support columns 28. The bottom of the base 26 is rectangular and fixed with four anti-slip pads 30. The bottoms of the four anti-slip pads 30 are all provided with anti-slip stripes to ensure the stability of the model when placed on the table and prevent sliding. The two sides of the base 26 on the front side are hinged with two There are two electric push rods 29, and the output ends of the two electric push rods 29 are hinged to the two sides of the lower body model 1 respectively. When it is necessary to adjust the display angle of the lower body model 1 when the cervix is ​​stretched, the electric push rods 29 are started by pressing the corresponding control button on the control touch display 24 to adjust the telescopic length of the electric push rods 29. As the output end of the electric push rods 29 is extended, the lower body model 1 rotates around the fixing frame 27 through the support column 28, so that the side of the lower body model 1 with the cervix is ​​raised. When the side of the lower body model 1 with the cervix reaches a suitable display angle, the operation of the electric push rods 29 is stopped.

[0041] However, as is well known to those skilled in the art, the working principles and wiring methods of the electric push rod 1 5, contact 7, motor 13, contact switch 16, assessment touch display 13, control touch display 24, indicator light 25 and electric push rod 2 29 are all conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0042] The drawings in this application are for illustrative purposes only. The sizes and shapes of the components shown are not intended to be limiting, but are merely for illustrative purposes. In actual implementation, the components may be appropriately configured and adjusted based on specific needs and actual conditions.

[0043] The working principle and usage process of this technical solution are as follows:

[0044] When starting to use, first place the lower body model 1 on a stable, well-lit table through the base 26, make sure that the four anti-slip pads 30 at the bottom of the base 26 are in full contact with the table to prevent the model from sliding, then turn on the power as a whole, then use your fingers to hold the grooves at the bottom of the assessment touch display 23 and the control touch display 24 in turn, and apply an upward force to overcome the meshing force between the toothed disc 22 and the tooth groove 19, so that the assessment touch display 23 or the control touch display 24 rotates through the hinge point between the connecting seat 18 and the fixed seat 17. During the rotation process, the tooth groove 192 will slide relative to the toothed disc 2 to form an interlaced shape, and the interlaced toothed disc 22 will move backward to compress the spring 21. When the teeth and grooves between the toothed disc 22 and the tooth groove 19 are relative, the spring 21 will push the toothed disc 2 through its own elastic principle. 2 is engaged with the tooth groove 19, and the test touch display 23 or the control touch display 24 is continuously lifted until the test touch display 23 or the control touch display 24 is adjusted to the optimal angle for use. Stop applying external force, and the spring 21 recovers its deformation and pushes the toothed disc 22 to re-engage with the tooth groove 19, fixing the test touch display 23 or the control touch display 24 at this angle. When it is necessary to retract the test touch display 23 or the control touch display 24, the above-mentioned operation method can be reversed to rotate the test touch display 23 or the control touch display 24 until the screen of the test touch display 23 or the control touch display 24 is close to and slightly attached to the lower body model 1, so as to prevent the screen of the test touch display 23 or the control touch display 24 from being damaged by external force when not in use;

[0045] Then, by pressing the corresponding control button on the control touch display 24, the electric push rod 29 is activated to adjust the extension length of the electric push rod 29. As the output end of the electric push rod 29 is extended, the lower body model 1 rotates around the fixing frame 27 via the support column 28, thereby raising the side of the lower body model 1 with the cervical opening, thereby achieving a more intuitive viewing angle when the cervical opening is stretched, and observing the changes in the stretching angle of the lower body model 1. When the side of the lower body model 1 with the cervical opening reaches the appropriate display angle, the operation of the electric push rod 29 is stopped.

[0046] When it is necessary to simulate the dilation of the cervix, the corresponding cervix opening size data (for example, the opening size is 2.0 cm or 8.4 cm, etc.) is input on the control touch display 24. After inputting the appropriate data, the start button on the control touch display 24 is pressed, and the electric push rod 5 is started first. The output end of the electric push rod 5 pushes the support plate 6 to move forward. Since the two guide rods 3 are symmetrically arranged on both sides of the cross support frame 2, and the front ends of the two guide rods 3 are fixedly connected to the support plate 6, and the rear ends are fixedly provided with limit blocks 4, the support plate 6 will move forward smoothly along the guide rods 3. When the support plate 6 moves, it drives its upper part to move toward the cervix of the lower body model 1. When the shifting frame 11 moves to the cervix, the electric push rod 5 is closed, and the motor 13 is started. The output shaft of the motor 13 drives the bidirectional screw rod 9 to rotate. Since the two ends of the bidirectional screw rod 9 with different threads are respectively threadedly connected with the moving blocks 10, when the bidirectional screw rod 9 rotates, the two moving blocks 10 will move along the bidirectional screw The rod 9 moves in opposite directions, and the shifting frame 11 fixed on the front side of the two moving blocks 10 and the hook frame 12 fixed on the front side of the shifting frame 11 will move with the movement of the moving block 10, thereby stretching the cervix of the lower body model 1. During the movement of the moving block 10, the slider 15 will slide in the slide groove 14 on the rear side of the connecting frame 8. When the slider 15 moves, the contact switch 16 thereon will contact the contact 7 on the support plate 6 in turn, and each contact 7 (the interval between multiple contacts 7 is 1 mm, which can be used to accurately measure the moving distance) corresponds to a specific position. When the contact switch 16 contacts the contact 7, it will be energized and an electrical signal will be fed back to the control touch display 24 each time it is energized. When the slider 15 moves to a certain position and stops, the contact switch 16 thereon contacts the contact 7 at that position and is continuously energized, thereby triggering an electrical signal. At this time, the control touch display 24 detects the electrical signal, processes the detected electrical signal, and displays the data of the current position of the slider 15 on the display screen;

[0047] At this time, the trainee observes the dilation size of the cervix of the lower body model 1 based on the knowledge he or she has learned, and enters the number of the dilation size he or she thinks is on the assessment touch display 23. After the operation is completed, press the confirmation button. Since the assessment touch display 23 and the control touch display 24 are electrically connected (via a wiring harness or Bluetooth connection), the system compares the parameters entered by the trainee on the assessment touch display 23 with the target parameters set by the operator on the control touch display 24. If the parameters are consistent, the green light in the red and green indicator lights 25 on both sides of the assessment touch display 23 will light up, indicating that the answer is correct. If the parameters are inconsistent, the red light in the red and green indicator lights 25 will light up, indicating that the answer is incorrect.

[0048] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. The embodiments of the present invention and the features therein can be combined with each other unless there is a conflict. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A three-dimensional uterine dilation model for teaching, characterized in that: include: A lower body model (1), an assessment touch display (23) and a control touch display (24), wherein red and green indicator lights (25) are electrically provided on both sides of the assessment touch display (23), and a cross support frame (2) is fixedly provided on four sides of the inner wall of the lower body model (1); The cross support frame (2) is provided with a pushing mechanism for pushing the expansion component to move toward the cervical opening of the lower body model (1). The pushing mechanism is provided with an expansion component for expanding the cervical opening of the lower body model (1).

2. A three-dimensional uterine dilation model for teaching according to claim 1, characterized in that: The pushing mechanism comprises two guide rods (3) symmetrically penetrating and slidingly arranged on both sides of a cross support frame (2), the front ends of the two guide rods (3) are fixedly provided with a same support plate (6), the rear ends of the two guide rods (3) are fixedly provided with a limit block (4), the rear side of the cross support frame (2) is embedded with an electric push rod (5), the output end of the electric push rod (5) is fixedly connected to the rear side of the support plate (6), and one side of the support plate (6) is fixedly provided with a plurality of evenly distributed contacts (7).

3. The three-dimensional uterine dilation model for teaching according to claim 2, characterized in that: The expansion assembly comprises a connecting frame (8) fixedly arranged on the front side of the support plate (6); a bidirectional screw rod (9) is rotatably arranged on the inner side of the connecting frame (8); two ends of the bidirectional screw rod (9) with different threads are respectively threadedly connected to a moving block (10); the two moving blocks (10) are both slidably arranged inside the connecting frame (8); a shifting frame (11) is fixedly arranged on the front side of the two moving blocks (10); a motor (13) is fixedly arranged on one side of the connecting frame (8); and the output shaft of the motor (13) is fixedly connected to the bidirectional screw rod (9).

4. The three-dimensional uterine dilation model for teaching according to claim 3, characterized in that: A slide groove (14) is provided on the rear side of the connecting frame (8), a slider (15) is slidably provided inside the slide groove (14), the front side of the slider (15) is fixedly connected to one of the moving blocks (10), and a contact switch (16) is embedded in the other side of the slider (15).

5. The three-dimensional uterine dilation model for teaching according to claim 3, characterized in that: The front sides of the two shifting frames (11) are both fixedly provided with hook frames (12).

6. The three-dimensional cervical dilation model for teaching according to claim 1, characterized in that: The front and rear sides of the lower body model (1) are symmetrically fixed with two fixing seats (17), and a connecting seat (18) is provided between the two fixing seats (17) on the same side. The assessment touch display (23) and the control touch display (24) are respectively fixed at the bottom of the two connecting seats (18). Tooth grooves (19) are provided on the inner sides of both sides of the two connecting seats (18). Bolts (20) are passed through one side of the two fixing seats (17) on the same side. A spring (21) is provided on the outside of each bolt (20). A tooth disk (22) is provided on the outside of each bolt (20). The two ends of the spring (21) are respectively against the side close to the bolt (20) and the tooth disk (22). The tooth groove (19) is adapted to the tooth disk (22) and can be disengaged. The bolt (20) passes through the fixing seat (17) and is threadedly connected to the connecting seat (18).

7. The three-dimensional uterine dilation model for teaching according to claim 1, characterized in that: The bottom of the lower body model (1) is provided with a base (26), the top of the base (26) is located at the rear side and is symmetrically fixed with two fixing frames (27), the inner sides of the two fixing frames (27) are rotatably provided with support columns (28), and the two support columns (28) are respectively fixedly connected to the bottom of the lower body model (1), and the two sides of the base (26) located at the front side are hingedly provided with two electric push rods (29), and the output ends of the two electric push rods (29) are respectively hinged to the two sides of the lower body model (1).

8. The three-dimensional cervical dilation model for teaching according to claim 7, characterized in that: The bottom of the base (26) is rectangular and fixed with four anti-skid pads (30), and the bottoms of the four anti-skid pads (30) are all provided with anti-skid stripes.

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