Teaching appliance capable of experiencing whole delivery process

By designing a teaching tool that includes simulating the uterus, simulating the pelvis, fetal appendages and data heads, the problem that the existing childbirth model cannot truly reproduce the childbirth process is solved, and students can intuitively understand the childbirth mechanism and improve their learning interest and clinical ability.

CN119832796AInactive Publication Date: 2025-04-15三明医学科技职业学院
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Patent Information

Application Number
CN202510214689.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-26
Publication Date
2025-04-15
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing childbirth model cannot comprehensively and truly reproduce various physiological changes and complex situations during childbirth. It is complex in operation and high in cost, making it difficult to adapt to the needs of students of different body types. It is mostly one-time use or single-function, making it difficult to meet diverse teaching needs.

Method used

A teaching tool including simulated uterus, simulated pelvis, fetal appendages and data head hood was designed. The simulated uterus consists of a transparent elastic cyst bag structure. The uterus simulated contraction and amniotic fluid environments through the outer airbag and internal waterbag. The simulated pelvis can be adjusted to adapt to different body shapes. The fetal appendages and data head hood are used to simulate the fetal descent and fetal head rotation process.

Benefits of technology

By simulating the real uterine contractions and the process of the fetus passing through the birth canal, students can intuitively understand the basic mechanisms of childbirth, improve their interest and enthusiasm in learning, enhance clinical thinking and problem-solving ability, which is suitable for the learning needs of students of different body types, and can be reused.

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Abstract

The invention discloses a teaching aid capable of experiencing the whole delivery process, and relates to the technical field of gynaecology and obstetrics teaching, the teaching aid comprises a bearing table, a simulation uterus is placed at the upper end of the bearing table, the simulation uterus is of a transparent elastic bag structure, the size of the simulation uterus can accommodate an experiencer, and the simulation uterus comprises an outer air bag and an inner water bag; the outer air bag wraps the outer layer of the inner water bag, the outer air bag, the air inlet and the water inlet of the inner water bag are connected with the control driving table through pipelines, the lower portion of the simulated uterus is sleeved with the simulated pelvis, the lower section of the simulated uterus is provided with an experiencer access, and the experiencer access is arranged in an inner cavity of the simulated pelvis. By simulating a real uterine contraction process and a process that a fetus passes through a birth canal, students can intuitively understand a basic mechanism of childbirth, and by experiencing the childbirth process by themselves, the learning interest and enthusiasm of the students can be remarkably improved, and the students are helped to better memorize and apply related knowledge in future learning and work.
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Description

Technical Field

[0001] The invention relates to the technical field of obstetrics and gynecology teaching, and in particular to a teaching tool capable of experiencing the whole process of childbirth. Background Art

[0002] In the field of obstetrics and gynecology teaching, the currently widely used delivery models are often limited to static displays or only provide some basic dynamic simulation functions. These models cannot fully and realistically reproduce the many physiological changes involved in the delivery process and the possible complex situations. For example, some models can only show the position changes of the fetus in the mother's body, but they cannot simulate the key links in the delivery process such as uterine contractions, fetal descent, and fetal head rotation. Although some models have certain dynamic simulation capabilities, their operation processes are often too complicated and the cost is relatively high, which makes it difficult for them to adapt to the learning needs of students of different body shapes, resulting in some students being unable to obtain an ideal experience effect. In addition, most of the existing delivery models are disposable products or have relatively single functions, which makes it difficult for them to meet the diverse practical needs of teaching, thereby limiting the expansion and innovation of teaching content. In view of this, there is an urgent need to develop a new type of delivery teaching tool that can break through the limitations of traditional models and provide students with a real, complete and reusable delivery experience platform. Such teaching aids will contribute to the reform and development of obstetrics and gynecology teaching, and their scope of use can basically cover the teaching tasks of delivery. To this end, we propose a teaching aid that can experience the entire process of delivery. Summary of the invention

[0003] The purpose of the present invention is to solve the problem that the delivery models commonly used in obstetrics and gynecology teaching are mostly static displays or simple dynamic simulations, and cannot fully and truly reproduce the various physiological changes and complex situations in the delivery process. For example, some models can only show the changes in the position of the fetus in the mother's body, but cannot simulate key links such as uterine contractions, fetal descent, and fetal head rotation; although other models have certain dynamic functions, they are complicated to operate, costly, and difficult to adapt to the needs of students of different body shapes, resulting in some students being unable to obtain the ideal experience effect. In addition, most existing models are disposable or have a single function, which makes it difficult to meet diverse teaching needs and limits the expansion and innovation of teaching content. The present invention provides a teaching tool that can experience the entire process of delivery.

[0004] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0005] A teaching tool for experiencing the whole process of childbirth, comprising a support platform, a simulated uterus is placed on the upper end of the support platform, the simulated uterus is a transparent elastic sac structure, and the size of the simulated uterus can accommodate an experiencer, the simulated uterus comprises an outer air bag and an inner water bag, the outer air bag is wrapped in the outer layer of the inner water bag, and the outer air bag and the air inlet and the water inlet of the inner water bag are connected to a control driving platform through a pipeline, the lower part of the simulated uterus is a simulated cervical os, and a simulated pelvis is connected to the outer surface of the simulated cervical os, an experiencer entrance and exit is arranged in the lower section of the simulated uterus, and the experiencer entrance and exit is arranged at the entrance plane position of the simulated pelvis, and the inner walls of the experiencer entrance and exit are respectively fixedly connected with mutually matching fixed zippers, the simulated uterus also comprises a fetal appendage and a data head cover, the fetal appendage connects the inner wall of the inner water bag and the experiencer, and the data head cover is worn on the experiencer's head.

[0006] Furthermore, the simulated cervical opening is an elastic cloth with a circular birth canal opening in the middle, and the outer wall of the simulated uterus is wrapped with multiple circles of damping elastic Velcro tape corresponding to the outer position of the simulated cervical opening.

[0007] Furthermore, the inner wall of the simulated uterus is fixedly connected with a plurality of placenta connecting Velcros corresponding to various placenta positions, the fetal appendages include a simulated placenta, a simulated umbilical cord and a fixed belt, the fixed belt is tied and fixed to the waist of the experiencer, and the fixed belt is connected to the simulated placenta through the simulated umbilical cord, and the simulated placenta is fixed to one of the placenta connecting Velcros.

[0008] Furthermore, the simulated pelvis includes a sacrum, a coxal bone, a pubic ramus, a ischial ramus and a coccyx, and the sacrum, coxal bone, pubic ramus, ischial ramus and coccyx are connected to each other corresponding to the pelvic structure, and the connection positions of the sacrum, coxal bone, pubic ramus, ischial ramus and coccyx are fixedly connected with a forward and reverse threaded screw with opposite thread rotation directions at one end relative to the connection position, and the free ends of the forward and reverse threaded screws are threadedly connected through a double-headed connecting screw sleeve, and the inner walls of the double-headed connecting screw sleeve have internal threads at both ends that match the forward and reverse threaded screw on the corresponding side.

[0009] Furthermore, the outer wall of the data head cover is drawn with a parietal area, a frontal area and an occipital area corresponding to the infant's skull structure, and pressure pads are fixed on the outer wall of the data head cover at positions corresponding to the parietal area, the frontal area and the occipital area, and a position sensor is buried in the center of the data head cover, and the pressure pad and the position sensor are both electrically connected to the control drive platform.

[0010] Furthermore, the front side of the top surface of the support platform is a slope structure inclined downward, and the simulated pelvis is fixedly connected to the support platform by bolts.

[0011] Furthermore, the simulated uterus also includes an auxiliary waistcoat, and the auxiliary waistcoat is a waistcoat structure with a neck ring in the middle, and pressure pads and position sensors are embedded at both ends of the waistcoat.

[0012] Furthermore, a control computer terminal and a drive device are provided in the control drive platform, and the drive device driver is electrically connected to the control computer terminal. The drive device includes a small air compressor and a small infusion pump. The output pipe of the small air compressor is connected to the air inlet of the outer air bag, and the small infusion pump is connected to the water inlet of the inner water bag through a pipe.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. The teaching aids in the present invention enable students to intuitively understand the basic mechanism of childbirth by simulating real uterine contractions and the process of the fetus passing through the birth canal. By personally experiencing the childbirth process, students' interest and enthusiasm in learning will be significantly improved. Traditional theoretical teaching and static models are often difficult to arouse students' interest, while this kind of interactive and experiential teaching aids can allow students to learn and explore childbirth knowledge more attentively. Experiential learning helps students combine theoretical knowledge with practical operations, deepen their understanding and memory of the childbirth mechanism, and serve as an intuitive memory point to help them better recall and apply relevant knowledge in future studies and work.

[0015] 2. When the present invention is used, students can practice midwifery skills on the teaching aid. The adjustability of the teaching aid also allows students to simulate different types of pelvic structures, thereby practicing midwifery skills under different delivery conditions.

[0016] 3. When the present invention is used, teachers can use teaching aids to design various delivery cases. Through case teaching, students can better understand the treatment methods and precautions of different delivery situations, cultivate clinical thinking and problem-solving skills, and when using teaching aids for teaching, students can be organized into groups to simulate a real delivery team. This teamwork method helps students learn to communicate and collaborate effectively with others in clinical work and improve their teamwork skills. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall structural diagram of the present invention;

[0018] Figure 2 It is a cervical position structure diagram of the present invention;

[0019] Figure 3 It is a pelvic structure diagram of the present invention;

[0020] Figure 4 It is a structural diagram of the data head cover layout of the present invention;

[0021] Figure 5 It is a side view of the supporting platform in the present invention.

[0022] Figure numerals: 1. support platform; 2. simulated uterus; 21. external air bag; 22. internal water bag; 23. placenta connecting Velcro; 24. experiencer entrance and exit; 25. damping elastic Velcro belt; 26. simulated cervical os; 3. fetal appendages; 31. simulated placenta; 32. simulated umbilical cord; 33. fixed belt; 4. simulated pelvis; 41. sacrum; 42. hip bone; 43. pubic branch; 44. sciatic branch; 45. coccyx; 46. double-headed connecting screw sleeve; 47. positive and negative thread screw; 5. data head cover; 51. parietal area; 52. frontal area; 53. occipital area; 54. pressure pad; 55. position sensor; 6. auxiliary waistcoat; 7. control drive platform. DETAILED DESCRIPTION

[0023] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] See also Figure 1-Figure 5 The present invention provides a teaching tool for experiencing the whole process of childbirth, including a support platform 1, a simulated uterus 2 is placed on the upper end of the support platform 1, the simulated uterus 2 is a transparent elastic bag structure, and the size of the simulated uterus 2 can accommodate the experiencer, and the simulated uterus 2 includes an outer air bag 21 and an inner water bag 22. The outer air bag is made of highly elastic and pressure-resistant silicone material, has good biocompatibility and softness, and can simulate the elasticity and flexibility of a real uterus. The inner water bag is made of food-grade transparent PVC material, which has high transparency and is convenient for observing the internal situation, and has good flexibility and water resistance. The outer air bag 21 is wrapped in the outer layer of the inner water bag 22, and the outer air bag 21 and the air inlet and the water inlet of the inner water bag 22 are connected to the control drive platform 7 through a pipeline. The lower part of the simulated uterus 2 is a simulated cervical os 26, and the simulated cervical os 26 is outer-mounted with a simulated pelvis 4. The lower section of the simulated uterus 2 is provided with an experiencer entrance and exit 24, and the experiencer entrance and exit 24 is provided at the entrance plane position of the simulated pelvis 4. The inner walls of the experiencer entrance and exit 24 are respectively fixedly connected with fixed zippers that cooperate with each other. The simulated uterus 2 also includes a fetal appendage 3 and a data head cover 5. The fetal appendage 3 connects the inner wall of the inner water bag 22 and the experiencer, and the data head cover 5 is worn on the experiencer's head.

[0025] In the present embodiment, preferably, the simulated cervical opening 26 is an elastic cloth with a circular birth canal opening in the middle, and the outer wall of the simulated uterus 2 is wrapped with multiple circles of damping elastic Velcro 25 corresponding to the outer position of the simulated cervical opening 26; the experiencer needs to pass through the circular birth canal opening in the center of the simulated cervical opening 26, and the elastic cloth provides the experiencer with production resistance. At the same time, the multiple circles of damping elastic Velcro 25 can be staggered and overlapped to form expansion resistance in different directions. The outer wall of the simulated uterus 2 has several circles of Velcro, which plays a role in preliminarily adjusting the size of the sac to better fit the experiencer, simulating the actual uterine contraction resistance, and facilitating the experiencer to experience the process of the fetus passing through the cervical opening.

[0026] In the present embodiment, preferably, the inner wall of the simulated uterus 2 is fixedly connected with a plurality of placenta connecting Velcros 23 corresponding to a plurality of placenta positions, the fetal appendage 3 comprises a simulated placenta 31, a simulated umbilical cord 32 and a fixed belt 33, the fixed belt 33 is tied and fixed to the waist of the experiencer, and the fixed belt 33 is connected to the simulated placenta 31 through the simulated umbilical cord 32, and the simulated placenta 31 is adhered and fixed to one of the placenta connecting Velcros 23; the plurality of placenta connecting Velcros 23 can simulate the placenta connection positions in different uteri, the connection of the placenta to the inner wall of the uterus is simulated by adhering the simulated placenta 31 to the placenta connecting Velcro 23, the simulated umbilical cord 32 is connected to the waist of the experiencer by the fixed belt 33, the fetal umbilical cord is simulated by the simulated umbilical cord 32, and the length of the simulated umbilical cord 32 can be selected according to different simulation requirements to improve the authenticity of the simulation.

[0027] In the present embodiment, preferably, the simulated pelvis 4 includes a sacrum 41, a hip bone 42, a pubic ramus 43, a ischial ramus 44 and a coccyx 45, and the sacrum 41, the hip bone 42, the pubic ramus 43, the ischial ramus 44 and the coccyx 45 are connected to each other corresponding to the pelvic structures, and the connection positions of the sacrum 41, the hip bone 42, the pubic ramus 43, the ischial ramus 44 and the coccyx 45 are fixedly connected with a positive and negative thread screw 47 with opposite thread rotation directions at one end relative to the connection position, and the free ends of the positive and negative thread screws 47 relative to each other are threadedly connected through a double-headed connecting screw sleeve 46, and the inner walls of the double-headed connecting screw sleeve 46 have internal threads matching the positive and negative thread screw 47 on the corresponding side; by setting the sacrum 41, the hip bone 42, Pubic ramus 43, ischial ramus 44 and coccyx 45 are all precisely made according to the size of 1.7-2 times of normal bones to ensure the realism of the model and the accuracy of teaching. The bones of the simulated pelvis 4 are made of low-temperature EVA hot-melt glue particles. This material has good plasticity and stability, can be melted in 80 degrees water temperature, and is cheaper than 3D printing materials. Students make their own pelvic models in groups based on anatomical knowledge. The sacrum 41, hip bone 42, pubic ramus 43, ischial ramus 44 and coccyx 45 are connected by double-headed connecting screw sleeves 46 and positive and negative thread screws 47. This connection method is not only firm and reliable, but also easy to adjust. By adjusting the length of the screw rod, the length of different diameters of the three planes of the pelvis can be changed, thereby demonstrating the normal pelvis and different types of abnormal pelvic structures, such as flat pelvis, funnel pelvis, etc., to help students intuitively recognize and understand the characteristics of normal and abnormal pelvis and their impact on childbirth, and enhance the flexibility and interactivity of teaching. In addition, because the connection method allows each bone to be disassembled, assembled, and replaced, the pelvic teaching aid has good portability and maintainability, and is convenient to carry and use for teaching.

[0028] In this embodiment, preferably, the outer wall of the data head cover 5 is drawn with a parietal bone area 51, a frontal bone area 52 and an occipital bone area 53 corresponding to the infant's skull structure, and a pressure pad 54 is fixed on the outer wall of the data head cover 5 corresponding to the parietal bone area 51, the frontal bone area 52 and the occipital bone area 53, and a position sensor 55 is buried in the center of the data head cover 5, and the pressure pad 54 and the position sensor 55 are both electrically connected to the control drive platform 7; the parietal bone area 51, the frontal bone area 52 and the occipital bone area 53 are used for teaching the determination of the fetal position, the pressure pad 54 and the position sensor 55 are arranged in the data head cover 5 and the waistcoat 6, and the monitoring data of the pressure pad 54 and the position sensor 55 are uploaded to the control drive platform 7 in real time, which can monitor the pressure changes of the experiencer's head during the simulated delivery process, and the positioner can determine the rotation process of the experiencer's head and shoulders.

[0029] In the present embodiment, preferably, the front side of the top surface of the support platform 1 is provided with a slope structure tilted downward, and the simulated pelvis 4 is fixedly connected to the support platform 1 by bolts; by setting the slope structure tilted downward on the front side of the top surface of the support platform 1, the support platform with a certain inclination provides a buffer for the delivery process, the outer wall of the simulated uterus 2 is fixedly connected to the Velcro at the upper end of the support platform 1 by Velcro, and the simulated pelvis 4 is fixedly connected to the support platform 1 by bolts, which is convenient for the positioning and installation of the simulated uterus 2 and the simulated pelvis 4.

[0030] In this embodiment, preferably, the simulated uterus 2 also includes an auxiliary waistcoat 6, and the auxiliary waistcoat 6 is a waistcoat structure with a neck ring in the middle; through the waistcoats on both sides of the auxiliary waistcoat 6, the waistcoats on both sides can increase the shoulder volume of the experiencer and increase the difficulty of the experiencer's passing, which is used to assist in the teaching of shoulder dystocia.

[0031] In this embodiment, preferably, a control computer terminal and a driving device are provided in the control driving platform 7, and the driving device driver is electrically connected to the control computer terminal. The driving device includes a small air compressor and a small infusion pump. The output pipeline of the small air compressor is connected to the air inlet of the outer air bag 21, and the small infusion pump is connected to the water inlet of the inner water bag 22 through a pipeline. The input mode of the operation interface of the control driving platform is a touch screen; it can be adjusted, the uterine contraction parameters are adjusted, and the uterine contraction mode is preset; it can display the relative position of the head, shoulders and pelvis of the experiencer, and understand the orientation and degree of descent of the experiencer. The control driving platform is provided with an emergency stop button, which can immediately stop the uterine contraction and the flow of amniotic fluid if the experiencer feels uncomfortable.

[0032] The working principle and use process of the present invention are as follows: when the device is used, a simulated uterus 2 is used to simulate the uterus. The experiencer can curl up into the bag and wear a fetal appendage 3 and a data headgear 5. Then the experiencer entrance 24 at the bottom of the simulated uterus 2 is tightened and fixed. The experiencer enters the simulated uterus through the experiencer entrance 24 at the lower segment of the simulated uterus. The size of the simulated uterus is adjusted according to the experiencer's body shape through the Velcro on the outer wall of the simulated uterus 2, so that the experiencer is completely wrapped by the airbag to simulate the real uterine environment. The main body of the simulated uterus 2 is divided into an outer airbag 21 and an inner water bag 22. The outer airbag 21 can pass through The control driving platform 7 drives the pressurization and decompression and frequency adjustment to simulate different uterine contractions. The inner water bag 22 inputs water through the control driving platform 7 to simulate the amniotic fluid environment. Through the provided fetal appendage 3 and the data head cover 5, the fetal appendage 3 can select the placenta in different positions to connect the experiencer and the uterus according to the experimental needs, which can meet the teaching and experience of the third stage of labor. Through the provided data head cover 5, the pressure changes of the experiencer's head during the simulated delivery process can be monitored through the console 7. The positioner can determine the rotation process of the fetal head and evaluate whether the experiencer has completed the delivery process according to the seven steps of the delivery mechanism.

[0033] The teaching aids of the present invention enable students to intuitively understand the basic mechanism of childbirth by simulating real uterine contractions and the process of the fetus passing through the birth canal. For example, students can better grasp the characteristics of different stages of the childbirth process, such as cervical dilation and fetal head descent, by experiencing the changes in uterine contraction pressure and the movement of the fetus in the birth canal. By personally experiencing the childbirth process, students' learning interest and enthusiasm will be significantly improved. Traditional theoretical teaching and static models are often difficult to arouse students' interest, while this kind of teaching aid with strong interactivity and sufficient experience can allow students to learn and explore childbirth knowledge more devotedly. Experiential learning helps students combine theoretical knowledge with practical operations and deepen their understanding and memory of the mechanism of childbirth. The uterine contraction pressure and fetal movement felt by students during the experience will serve as intuitive memory points to help them better recall and apply relevant knowledge in future learning and work.

[0034] Students can practice midwifery skills on the teaching aids, such as how to correctly guide and assist the fetus through the birth canal, how to deal with common problems such as malposition of the fetus, etc. The adjustability of the teaching aids also allows students to simulate different types of pelvic structures, thereby practicing midwifery skills under different delivery conditions.

[0035] Teachers can use teaching aids to design various delivery cases, such as normal delivery, difficult delivery, etc., so that students can discuss and analyze after experiencing them. Through case teaching, students can better understand the treatment methods and precautions for different delivery situations, cultivate clinical thinking and problem-solving skills. When using teaching aids for teaching, students can be organized into groups to work together to simulate a real delivery team. For example, one group of students is responsible for simulating parturients, another group of students is responsible for midwifery operations, and another group of students is responsible for observation and recording. This teamwork approach helps students learn to communicate and collaborate effectively with others in clinical work and improve their teamwork skills.

[0036] In addition, the present invention has a simple structure and low cost, and is easy for a student team to assemble, debug and improve. It is suitable for the implementation of student innovation and entrepreneurship projects and helps to cultivate students' hands-on ability and innovative thinking.

[0037] Although teaching aids are mainly used for medical education, they also have certain application potential in maternity education. For example, the basic functions of teaching aids and simulated childbirth processes can be shown to pregnant women to help them understand the basic principles of childbirth and possible situations, thereby reducing their fear and anxiety about childbirth and enhancing their confidence in childbirth. In some popular science activities, the functions and purposes of teaching aids can be briefly introduced to let the public understand how to train qualified obstetricians and gynecologists and midwives in medical education through innovative ways, and to increase the public's attention to the childbirth process and medical education.

[0038] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A teaching tool for experiencing the whole process of childbirth, characterized by: The device comprises a support platform (1), a simulated uterus (2) is placed on the upper end of the support platform (1), the simulated uterus (2) is a transparent elastic bag structure, and the size of the simulated uterus (2) can accommodate an experiencer, the simulated uterus (2) comprises an outer air bag (21) and an inner water bag (22), the outer air bag (21) is wrapped in the outer layer of the inner water bag (22), and the outer air bag (21) and the air inlet and the water inlet of the inner water bag (22) are connected to a control driving platform (7) through a pipeline, the lower part of the simulated uterus (2) is a simulated cervical os (26), and The simulated cervical os (26) is externally connected to the simulated pelvis (4); the lower section of the simulated uterus (2) is provided with an experiencer entrance and exit (24), and the experiencer entrance and exit (24) is arranged at the entrance plane position of the simulated pelvis (4); the inner walls of the experiencer entrance and exit (24) are respectively fixedly connected with mutually matching fixed zippers on both sides; the simulated uterus (2) further comprises a fetal appendage (3) and a data head cover (5); the fetal appendage (3) is connected to the inner wall of the inner water bag (22) and the experiencer, and the data head cover (5) is worn on the experiencer's head.

2. A teaching tool for experiencing the whole process of childbirth according to claim 1, characterized in that: The simulated cervical opening (26) is an elastic cloth with a circular birth canal opening in the middle, and the outer wall of the simulated uterus (2) is wrapped with multiple turns of damping elastic Velcro tape (25) corresponding to the outer position of the simulated cervical opening (26).

3. A teaching tool for experiencing the whole process of childbirth according to claim 1, characterized in that: The inner wall of the simulated uterus (2) is fixedly connected with a plurality of placenta connecting Velcro strips (23) corresponding to various placenta positions. The fetal appendage (3) comprises a simulated placenta (31), a simulated umbilical cord (32) and a fixed waist belt (33). The fixed waist belt (33) is tied and fixed to the waist of the experiencer, and the fixed waist belt (33) is connected to the simulated placenta (31) through the simulated umbilical cord (32). The simulated placenta (31) is adhered and fixed to one of the placenta connecting Velcro strips (23).

4. A teaching tool for experiencing the whole process of childbirth according to claim 1, characterized in that: The simulated pelvis (4) comprises a sacrum (41), a hip bone (42), a pubic ramus (43), a sciatic ramus (44) and a coccyx (45); the sacrum (41), the hip bone (42), the pubic ramus (43), the sciatic ramus (44) and the coccyx (45) are connected to each other corresponding to the pelvic structures; and the connection positions of the sacrum (41), the hip bone (42), the pubic ramus (43), the sciatic ramus (44) and the coccyx (45) are fixedly connected with a forward and reverse threaded screw (47) with opposite threaded directions at one end relative to the connection position; the free ends of the forward and reverse threaded screw (47) are threadedly connected via a double-headed connecting screw sleeve (46); and the inner walls of the double-headed connecting screw sleeve (46) are provided with internal threads matching the forward and reverse threaded screw (47) on the corresponding side at both ends.

5. A teaching tool for experiencing the whole process of childbirth according to claim 1, characterized in that: The outer wall of the data head cover (5) is drawn with a parietal bone area (51), a frontal bone area (52) and an occipital bone area (53) corresponding to the infant's skull structure; a pressure pad (54) is fixedly attached to the outer wall of the data head cover (5) at positions corresponding to the parietal bone area (51), the frontal bone area (52) and the occipital bone area (53); a position sensor (55) is embedded in the center of the data head cover (5); and both the pressure pad (54) and the position sensor (55) are electrically connected to the control drive platform (7).

6. A teaching tool for experiencing the whole process of childbirth according to claim 1, characterized in that: The front side of the top of the support platform (1) is a slope structure that tilts downward, and the simulated pelvis (4) is fixedly connected to the support platform (1) via bolts.

7. The teaching tool for experiencing the whole process of childbirth according to claim 1, characterized in that: The simulated uterus (2) further comprises an auxiliary waistcoat (6), and the auxiliary waistcoat (6) is a waistcoat structure with a neck ring arranged in the middle, and pressure pads and position sensors are embedded at both ends of the auxiliary waistcoat (6).

8. The teaching tool for experiencing the whole process of childbirth according to claim 1, characterized in that: The control drive platform (7) is provided with a control computer terminal and a drive device, and the drive device driver is electrically connected to the control computer terminal. The drive device includes a small air compressor and a small infusion pump. The output pipeline of the small air compressor is connected to the air inlet of the outer air bag (21), and the small infusion pump is connected to the water inlet of the inner water bag (22) through a pipeline.