A seamless switching medical simulation training system that integrates virtual and real-world childbirth and postpartum hemorrhage simulations.

Abstract

This invention discloses a seamless switching medical simulation training system that integrates virtual and real-world childbirth and postpartum hemorrhage scenarios. Its features include: a maternal model, a childbirth simulation mechanism, and a postpartum simulation mechanism, one of which can be selectively mounted on the maternal model; the childbirth model mechanism includes an infant model, a birthing belly component, a birthing vagina component, and a drive device. The drive device is located within the maternal model, and the infant model is mounted on the drive device, allowing the drive device to move the infant model linearly and rotate towards the birthing vagina component; the birthing belly component is equipped with undulating components; this system achieves seamless switching between childbirth and postpartum hemorrhage scenarios through a modular and detachable structure, realistically simulating clinical scenarios such as the childbirth process and postpartum hemorrhage care. It is comprehensive in function, realistic in operation, and can effectively improve the standardized operation and emergency response capabilities of medical personnel.

Description

Technical Field

[0001] This invention relates to the field of medical teaching model technology, specifically a seamless switching medical simulation training system that integrates virtual and real-world childbirth and postpartum hemorrhage. Background Technology

[0002] In the training of obstetric and gynecological medical staff, it is crucial to master the midwifery process of normal delivery and the ability to identify and rescue critical illnesses such as postpartum hemorrhage. At present, various childbirth simulation systems have emerged on the market. These highly intelligent simulators can simulate the entire process from labor to delivery and provide training functions for complications such as postpartum hemorrhage.

[0003] However, existing technologies still have significant shortcomings. First, switching between functions is cumbersome. Although the system can support multiple training scenarios, switching between the "normal delivery" and "postpartum hemorrhage" modes usually requires replacing complex physical modules or performing tedious software resets. This process is not only time-consuming and affects the continuity of teaching, but repeated disassembly may also accelerate model wear and tear, reducing the simulation accuracy. Second, there is a separation between immersion and operational realism. While some purely virtual simulation systems can provide a good visual immersion, trainees cannot obtain realistic physical operational feedback. Summary of the Invention

[0004] The purpose of this invention is to provide a seamless switching medical simulation training system that integrates virtual and real-world childbirth and postpartum hemorrhage to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a seamless switching medical simulation training system that integrates virtual and real childbirth and postpartum hemorrhage, comprising a maternal model, a childbirth simulation mechanism, and a postpartum simulation mechanism, wherein the childbirth simulation mechanism and the postpartum simulation mechanism can be selectively mounted on the maternal model; The childbirth simulation mechanism includes an infant model, a birthing belly assembly, a birthing vagina assembly, and a drive device. The drive device is located inside the mother model, and the infant model is located on the drive device, so that the drive device can drive the infant model to achieve linear movement and rotation towards the birthing vagina assembly. The birthing belly assembly is equipped with an undulating component to simulate the breathing fluctuations and abdominal movements of the mother during childbirth. The postpartum simulation mechanism includes a postpartum abdominal component, a uterine contraction simulation component, a postpartum hemorrhage vaginal component, and a bleeding simulation component. The bleeding simulation component uses the prepared blood water stored in its internal water tank to deliver to the postpartum hemorrhage vaginal component to simulate postpartum hemorrhage. The delivery belly component and the postpartum belly component, the delivery vagina component and the postpartum hemorrhage vagina component are respectively selected and detachably installed in the corresponding installation position of the maternal model according to the simulation training steps.

[0006] Furthermore, the uterine contraction simulation component includes a uterine body and an air pump assembly. The output end of the air pump assembly is equipped with a solenoid valve assembly, and the output end of the solenoid valve assembly is equipped with an air tube. The end of the air tube is connected to a uterine airbag, which covers the outer wall of the uterine body. The air pump assembly includes a first air pump and a second air pump, which are used to inflate and deflate the uterine airbag, respectively. The outer wall of the uterine airbag is equipped with several pressure sensors to sense the massage pressure.

[0007] Furthermore, it also includes a placental model and a simulated umbilical cord connected to the placental model. The outer surface of the placental model has several inserts, and the other end of each insert has a fastening block. The inner wall of the uterine body has several support rods, and the other end of each support rod has a fastening ball. The fastening ball is covered with a flexible layer, and the spacing between two adjacent flexible layers is smaller than the size of the fastening block, so that the fastening block can be squeezed and locked between adjacent fastening balls through the flexible layer, thereby realizing a detachable connection between the placental model and the uterine body.

[0008] Furthermore, the simulated umbilical cord includes a first umbilical cord component and a second umbilical cord component. The first umbilical cord component is fixedly connected to the placental model, and its other end has an insertion hole with a slot inside the insertion hole. One end of the second umbilical cord component is disposed on a plug, and the outer wall of the plug has fixing holes at equal intervals. A locking block is slidably assembled in the fixing hole, and a spring is connected between the locking block and the fixing hole. A detection sensor is disposed in the insertion hole, and the detection sensor is electrically connected to the bleeding simulation component.

[0009] Furthermore, the placenta model has several openings, and placental adhesive blocks are attached to the openings via Velcro. Several insertion rods are connected to the outer wall of the placental adhesive blocks.

[0010] Furthermore, the maternal model is equipped with a linear screw drive mechanism and a slide. The slide is driven to move by the linear screw drive mechanism. A first motor is mounted on the slide, and a first magnet is provided on the output shaft of the first motor. The infant model is provided with a corresponding second magnet to fix it to the slide by magnetic attraction.

[0011] Furthermore, the delivery belly assembly includes a belly layer, a belly airbag disposed inside the belly layer, and foam cotton. The undulation assembly includes an undulation plate, an undulation air pump assembly, and a servo motor. The undulation plate and the servo motor are disposed in the thoracic cavity of the belly layer. The output shaft of the servo motor is hinged to a connecting rod, and the other end of the connecting rod is hinged to the undulation plate, thereby driving the undulation plate to reciprocate. The undulation air pump assembly is connected to the belly airbag through a pipeline to realize inflation and deflation.

[0012] Furthermore, the bleeding simulation component includes a water tank and a peristaltic pump. The postpartum hemorrhage vaginal component is provided with a bleeding port. The peristaltic pump is connected to the water tank and the bleeding port to draw water from the water tank outlet and pump it to the bleeding port on the vaginal wall. The water tank cover is provided with a breathing valve to maintain the air pressure balance inside and outside the water tank.

[0013] Furthermore, the postpartum hemorrhage vaginal assembly has a urethra on the upper side of the vaginal wall for catheter insertion; its end is equipped with a Hall sensor for identifying whether the catheter is inserted correctly.

[0014] Furthermore, the abdomen of the maternal model is provided with several hooks, and both the delivery abdomen component and the postpartum abdomen component are provided with corresponding button locks; the delivery vagina component and the postpartum hemorrhage vagina component are respectively installed on the maternal model with screws.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention employs a detachable abdominal component, vaginal component, and modular simulation mechanism, allowing for rapid switching between childbirth simulation and postpartum hemorrhage simulation based on training steps. The abdominal component uses a button lock, and the vaginal component is fixed with screws, ensuring quick assembly and disassembly with a secure connection. Each simulation component is durable and easy to reset, eliminating the need to replace the entire model and significantly improving equipment utilization and training continuity.

[0016] This invention enables the infant model to perform linear propulsion and rotational compound movements during childbirth simulation. Combined with the breathing and uterine contraction dynamics of the abdomen, it highly replicates the process of fetal delivery, facilitating training in key operations such as labor monitoring and delivery techniques.

[0017] During postpartum simulation, the placenta and uterus are connected by an elastic interlocking structure, which can realistically simulate placental adhesion and separation resistance. This allows trainees to practice standardized artificial placental separation techniques and avoid rough clinical operations. Furthermore, forcibly pulling the umbilical cord when the placenta is not completely separated will cause the umbilical cord to rupture in two segments and immediately trigger bleeding, realistically recreating high-risk clinical complications. This serves as a warning of the risks of non-standard operations and can also train emergency response capabilities for postpartum hemorrhage. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the childbirth simulation mechanism of the present invention; Figure 2 This is a schematic diagram of the postpartum simulation mechanism of the present invention; Figure 3 This is a cross-sectional view of the childbirth simulation mechanism of the present invention; Figure 4 This is a cross-sectional view of the postpartum simulation mechanism of the present invention; Figure 5 This is a schematic diagram of the placental model. Figure 6This is an assembly sectional view of the placental model; Figure 7 for Figure 6 Enlarged view of a portion of point A in the middle; Figure 8 This is a schematic diagram of the undulating component. Figure 9 This is a schematic diagram of the bleeding simulation component.

[0019] In the diagram, the components are: 1. Mother model; 2. Infant model; 3. Delivery abdomen assembly; 4. Delivery vagina assembly; 5. Drive device; 6. Postpartum abdomen assembly; 7. Uterine contraction simulation assembly; 8. Postpartum hemorrhage vagina assembly; 9. Hemorrhage simulation assembly; 10. Uterus body; 11. Air pump assembly; 12. Solenoid valve assembly; 13. Uterine airbag; 14. Placental model; 15. Insert rod; 16. Fastening ball; 17. Flexible layer; 18. Support rod; 19. Fastening block; 20. First umbilical cord component; 21. Second umbilical cord component; ... Hole-22, Plug-23, Locking Block-24, Spring-25, Detection Sensor-26, Through-hole-27, Placental Adhesion Block-28, Linear Screw Drive Mechanism-29, Slide Table-30, First Motor-31, First Magnet-32, Second Magnet-33, Belly Layer-34, Belly Airbag-35, Foam Cotton-36, Rising Assembly-37, Rising Air Pump Assembly-38, Servo Motor-39, Connecting Rod-40, Water Tank-41, Peristaltic Pump-42, Bleeding Out-43, Breathing Valve-44, Urethra-45. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figures 1 to 9 As shown, a seamless switching medical simulation training system that integrates virtual and real childbirth and postpartum hemorrhage includes a maternal model 1, a childbirth simulation mechanism, and a postpartum simulation mechanism, wherein the childbirth simulation mechanism and the postpartum simulation mechanism can be selectively mounted on the maternal model 1. The childbirth simulation mechanism includes an infant model 2, a childbirth belly assembly 3, a childbirth vagina assembly 4, and a drive device 5. The drive device 5 is installed inside the mother model 1, and the infant model 2 is installed on the drive device 5, so that the drive device 5 drives the infant model 2 to achieve linear movement and rotation towards the childbirth vagina assembly 4. The childbirth belly assembly 3 is equipped with an undulation component 37 to simulate the breathing fluctuations and abdominal movement of the mother during childbirth. The postpartum simulation mechanism includes a postpartum abdominal component 6, a uterine contraction simulation component 7, a postpartum hemorrhage vaginal component 8, and a hemorrhage simulation component 9. The hemorrhage simulation component 9 uses the prepared blood water stored in its internal water tank 41 to deliver to the postpartum hemorrhage vaginal component 8 to simulate postpartum hemorrhage. The delivery belly component 3 and the postpartum belly component 6, the delivery vagina component 4 and the postpartum hemorrhage vagina component 8 are respectively selected and detachably installed at the corresponding installation position of the maternal model 1 according to the simulation training steps.

[0022] In this embodiment, the uterine contraction simulation component 7 includes a uterine body 10 and an air pump assembly 11. The output end of the air pump assembly 11 is provided with an electromagnetic valve assembly 12, and the output end of the electromagnetic valve assembly 12 is provided with an air tube. The end of the air tube is connected to a uterine airbag 13, which covers the outer wall of the uterine body 10. The air pump assembly 11 includes a first air pump and a second air pump, which are used to inflate and deflate the uterine airbag 13, respectively. The outer wall of the uterine airbag 13 is provided with several pressure sensors to sense the massage pressure.

[0023] When the first air pump is working, it inflates the uterine airbag 13 through the solenoid valve group 12. The airbag expands and squeezes the uterine body 10, simulating the tense state of uterine contraction. When the second air pump is working, it expels the gas from the uterine airbag 13 through the solenoid valve group 12, causing the airbag to contract, simulating the relaxed state of the uterus. By controlling the start and stop frequency and inflation volume of the air pump, it is possible to simulate uterine contractions of different rhythms (such as frequent uterine contractions in the early postpartum period and regular uterine contractions in the later period) and different intensities (such as mild uterine contractions and severe uterine contractions), which closely matches the clinical reality after childbirth.

[0024] The outer wall of the uterine airbag 13 is equipped with several pressure sensors. When medical staff massage the abdomen (corresponding to the uterine position) of the parturient model 1 in accordance with clinical standards, the pressure sensors can sense the pressure intensity and frequency in real time and feed the signal back to the system to determine whether the massage operation of the medical staff is standardized, and provide data support for training and assessment.

[0025] In this embodiment, a placental model 14 and a simulated umbilical cord are also included. The simulated umbilical cord is connected to the placental model 14. A plurality of insert rods 15 are distributed on the outer surface of the placental model 14. A fastening block 19 is provided at the other end of the insert rod 15. A plurality of support rods 18 are distributed on the inner wall of the uterine body 10. A fastening ball 16 is provided at the other end of the support rod 18. The fastening ball 16 is covered with a flexible layer 17. The spacing between two adjacent flexible layers 17 is smaller than the size of the fastening block 19, so that the fastening block 19 can be squeezed and locked between adjacent fastening balls 16 through the flexible layer 17, thereby realizing a detachable connection between the placental model 14 and the uterine body 10.

[0026] During installation, the placental model 14 is pressed directly onto the inner wall of the uterine body 10. The insert 15 on it will automatically insert into the gap between the adjacent fastening balls 16. The fastening block 19 squeezes the flexible layer 17 (the flexible layer 17 can undergo elastic deformation) and gets stuck between the adjacent fastening balls 16. After the flexible layer 17 rebounds, it wraps around the fastening block 19, thus fixing the placental model 14 to the uterine body 10, simulating the state of the placenta being tightly connected to the uterine wall when it has not been detached in clinical practice. During training, students and professionals can pull and detach the placental model 14 according to the clinical specifications of artificial placental detachment. External force overcomes the wrapping force of the flexible layer 17 on the fastening block 19, and the fastening block 19 disengages from the gap between the adjacent fastening balls 16, thus achieving placental detachment. This accurately simulates the real operation feel and force requirements of artificial placental detachment, meeting the needs of specialized training.

[0027] In this embodiment, the simulated umbilical cord includes a first umbilical cord component 20 and a second umbilical cord component 21. The first umbilical cord component 20 is fixedly connected to the placental model 14, and its other end is provided with an insertion hole 22. A slot is provided in the insertion hole 22. One end of the second umbilical cord component 21 is provided with a plug 23. The outer wall of the plug 23 is provided with fixing holes at equal intervals. A locking block 24 is slidably assembled in the fixing hole, and a spring 25 is connected between the locking block 24 and the fixing hole. A detection sensor 26 is provided in the insertion hole 22, and the detection sensor 26 is electrically connected to the bleeding simulation component 9.

[0028] In the training scenario, if students and professionals forcibly pull the umbilical cord before the placenta is completely detached (i.e., the placental model 14 is not completely detached from the uterine body 10), the excessive traction force will overcome the elasticity of the spring 25, squeezing the locking block 24 back into the fixing hole, causing the plug 23 to fall out of the socket 22, thus achieving the breakage of the first umbilical cord component 20 and the second umbilical cord component 21. A detection sensor 26 is installed inside the socket 22, which is electrically connected to the bleeding simulation component 9. When the umbilical cord connection is intact, the detection sensor 26 detects the signal from the plug 23, and the bleeding simulation component 9 does not trigger abnormal bleeding. When the placenta is not completely separated and forced traction causes the umbilical cord to rupture (the first umbilical cord component 20 and the second umbilical cord component 21 are separated), the detection sensor 26 does not detect the signal from the plug 23, and the bleeding simulation component 9 is immediately triggered to start, simulating a massive bleeding scenario after umbilical cord rupture. This simulates the emergency situation caused by such operational errors in clinical practice, assesses and improves the emergency response capabilities and operational standardization of students and professionals, and avoids the occurrence of such errors in clinical practice.

[0029] In this embodiment, the placental model 14 has several openings 27, and placental adhesive blocks 28 are attached to the openings 27 by Velcro. Several insertion rods 15 are connected to the outer wall of the placental adhesive blocks 28.

[0030] In the training scenario, when students and professionals pull the umbilical cord and detach the placental model 14 from the uterine body 10, if the corresponding part of the placental clump 28 is not completely detached (i.e., the fastening block 19 of the insert 15 is still stuck between the fastening balls 16 on the uterine wall), the traction force of the placental body will be transmitted to the Velcro connection between the placental clump 28 and the placental model 14. The squeezing force of the insert 15 and the flexible layer 17 will overcome the adhesive force of the Velcro, causing the placental clump 28 to detach from the placental model 14 and ultimately remain attached to the uterine wall. This accurately simulates the real clinical scenario of "delivery of the placental body, with residual fetal membranes or placental tissue." When medical staff are training, they need to detach the placental clump 28 attached to the uterine wall through curettage. The locking structure of the insert 15 and the flexible layer 17 ensures that the residual placental clump 28 is stably attached and prevents it from falling off, restoring the real feel of curettage and helping to master the clinical management skills of removing residual tissue.

[0031] In this embodiment, the maternal model 1 is provided with a linear screw drive mechanism 29 and a slide 30. The slide 30 is driven to move by the linear screw drive mechanism 29. A first motor 31 is mounted on the slide 30. A first magnet 32 ​​is provided on the output shaft of the first motor 31. The infant model 2 is provided with a corresponding second magnet 33 to be fixed to the slide 30 by magnetic attraction.

[0032] During operation, the linear screw drive mechanism 29 drives the slide 30 (and the infant model 2) to move linearly towards the vaginal delivery component 4, simulating the birth of a fetus; at the same time, the first motor 31 starts, driving the first magnet 32 ​​to rotate, and through magnetic attraction, it drives the infant model 2 to rotate synchronously, simulating the fetus's head rotation, body turning and other movements during the delivery process, accurately restoring the fetus's movement state during clinical delivery, and improving the realism of the training.

[0033] In this embodiment, the delivery belly assembly 3 includes a belly layer 34, a belly airbag 35 disposed inside the belly layer 34, and foam 36. The undulation assembly 37 includes an undulation plate, an undulation air pump assembly 38, and a servo motor 39. The undulation plate and the servo motor 39 are disposed in the thoracic cavity of the belly layer 34. The output shaft of the servo motor 39 is hinged to a connecting rod 40, and the other end of the connecting rod 40 is hinged to the undulation plate, thereby driving the undulation plate to reciprocate. The undulation air pump assembly 38 is connected to the belly airbag 35 through a pipeline to realize inflation and deflation.

[0034] When the servo motor 39 is started, the output shaft drives the connecting rod 40 to reciprocate. The connecting rod 40 pulls the undulating plate to swing up and down, simulating the rise and fall of the chest cavity when the human body breathes. This, in turn, causes the abdominal layer 34 to rise and fall slightly in sync, restoring the normal breathing state of a woman during childbirth. When the air pump inflates, the abdominal air sac 35 expands, and the abdominal skin layer 34 bulges and tightens, simulating the hard and tight state of the abdomen during uterine contractions; when the air pump deflates, the abdominal air sac 35 contracts, and the abdominal skin layer 34 returns to its soft state, simulating the state of the abdomen between uterine contractions; by controlling the inflation volume and start-stop frequency of the air pump, the abdominal movements during uterine contractions of different intensities can be simulated, closely matching the physiological changes during childbirth.

[0035] In this embodiment, the bleeding simulation component 9 includes a water tank 41 and a peristaltic pump 42. The postpartum hemorrhage vaginal component 8 is provided with a bleeding port 43. The peristaltic pump 42 is connected to the water tank 41 and the bleeding port 43 to draw water from the outlet of the water tank 41 and pump it to the bleeding port 43 on the vaginal wall. The water tank 41 is provided with a breathing valve 44 on its cover to maintain the air pressure balance inside and outside the water tank.

[0036] The peristaltic pump 42 is connected to the water tank 41 and the bleeding port 43. By controlling the start, stop and speed of the peristaltic pump 42, the quantitative and timed delivery of blood and fluid can be achieved: when the speed is fast and the operation is continuous, it simulates massive postpartum hemorrhage; when the speed is slow and the operation is intermittent, it simulates minor bleeding or intermittent bleeding. It can accurately simulate different types of postpartum hemorrhage scenarios in clinical practice.

[0037] In this embodiment, the vaginal wall of the postpartum hemorrhage vaginal component 8 is provided with a urethra 45 for catheter insertion; its end is provided with a Hall sensor for identifying whether the catheter is inserted in place.

[0038] When medical staff insert the urinary catheter into the urethra at 45° and it is fully inserted, the Hall sensor at the end of the catheter is triggered, and the sensor sends a signal (which can be fed back to the system; control systems not explicitly mentioned are adapted by default), indicating that the catheter has been inserted in place; if it is not fully inserted, the Hall sensor will not trigger a signal, indicating that the operation is not in accordance with regulations.

[0039] In this embodiment, the abdomen of the maternal model 1 is provided with several hooks, and the delivery abdomen component 3 and the postpartum abdomen component 6 are both provided with corresponding button locks; the delivery vagina component 4 and the postpartum hemorrhage vagina component 8 are respectively installed on the maternal model 1 by screws.

[0040] During installation, align the belly panel assembly with the belly area of ​​the maternity model 1, press the button to lock the buckle, and lock the buckle with the hook to secure the belly panel assembly. To remove, press the button to unlock and remove the belly panel assembly.

[0041] The working principle of this embodiment is as follows: First, according to the training requirements (childbirth training / postpartum hemorrhage training), the corresponding simulation mechanism is assembled on the parturient model 1; Childbirth scenario simulation: the drive device 5 is activated, the linear screw drive mechanism 29 drives the slide 30 (and the infant model 2) to move linearly, the first motor 31 drives the infant model 2 to rotate, simulating the process of fetal descent and rotation during childbirth; at the same time, the undulating component 37 is activated, the servo motor 39 drives the undulating plate to swing to simulate breathing undulation, the undulating air pump group 38 controls the inflation and deflation of the abdominal airbag 35 to simulate abdominal movement during uterine contractions, allowing medical staff to intuitively observe the childbirth process and conduct operation training such as fetal delivery and labor monitoring. After the childbirth training is completed, there is no need to replace the parturient model 1. The childbirth abdominal component 3, the childbirth vaginal component 4, and the infant model 2 are quickly disassembled, the postpartum abdominal component 6 and the postpartum hemorrhage vaginal component 8 are installed, the placental model 14 is fixed on the uterine body 10, and the simulated umbilical cord is connected, thus completing the switch from the childbirth scenario to the postpartum hemorrhage scenario. The switching process is convenient and does not interrupt the training process. After the postpartum scenario initialization is completed, the uterine contraction simulation component 7 is activated. The air pump group 11 controls the inflation and deflation of the uterine airbag 13 through the solenoid valve group 12 to simulate postpartum uterine contractions. The pressure sensor detects the massage operation of the medical staff and provides feedback on the standardization of the operation. The bleeding simulation component 9 is activated. The peristaltic pump 42 delivers the simulated blood in the water tank 41 to the bleeding outlet 43 of the postpartum hemorrhage vaginal component 8 to simulate different degrees of postpartum hemorrhage. At the same time, it can also simulate placental separation training.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A seamless switching medical simulation training system integrating virtual and real-world childbirth and postpartum hemorrhage, characterized in that: It includes a maternal model, a childbirth simulation mechanism, and a postpartum simulation mechanism, wherein either the childbirth simulation mechanism or the postpartum simulation mechanism can be selectively mounted on the maternal model; The childbirth simulation mechanism includes an infant model, a birthing belly assembly, a birthing vagina assembly, and a drive device. The drive device is located inside the mother model, and the infant model is located on the drive device, so that the drive device can drive the infant model to achieve linear movement and rotation towards the birthing vagina assembly. The birthing belly assembly is equipped with an undulating component to simulate the breathing fluctuations and abdominal movements of the mother during childbirth. The postpartum simulation mechanism includes a postpartum abdominal component, a uterine contraction simulation component, a postpartum hemorrhage vaginal component, and a bleeding simulation component. The bleeding simulation component uses the prepared blood water stored in its internal water tank to deliver to the postpartum hemorrhage vaginal component to simulate postpartum hemorrhage. The delivery belly component and the postpartum belly component, the delivery vagina component and the postpartum hemorrhage vagina component are respectively selected and detachably installed in the corresponding installation position of the maternal model according to the simulation training steps.

2. The seamless switching medical simulation training system for childbirth and postpartum hemorrhage according to claim 1, characterized in that: The uterine contraction simulation component includes a uterine body and an air pump assembly. The output end of the air pump assembly is equipped with a solenoid valve assembly, and the output end of the solenoid valve assembly is equipped with an air tube. The end of the air tube is connected to a uterine airbag, which covers the outer wall of the uterine body. The air pump assembly includes a first air pump and a second air pump, which are used to inflate and deflate the uterine airbag, respectively. The outer wall of the uterine airbag is equipped with several pressure sensors to sense the massage pressure.

3. The seamless switching medical simulation training system for childbirth and postpartum hemorrhage according to claim 2, characterized in that: It also includes a placental model and a simulated umbilical cord connected to the placental model. The outer surface of the placental model has several inserts, and the other end of each insert has a fastening block. The inner wall of the uterine body has several support rods, and the other end of each support rod has a fastening ball. The fastening ball is covered with a flexible layer, and the spacing between two adjacent flexible layers is smaller than the size of the fastening block, so that the fastening block can be squeezed and locked between adjacent fastening balls through the flexible layer, thus realizing a detachable connection between the placental model and the uterine body.

4. The seamless switching medical simulation training system for childbirth and postpartum hemorrhage according to claim 3, characterized in that: The simulated umbilical cord includes a first umbilical cord component and a second umbilical cord component. The first umbilical cord component is fixed to the placental model, and its other end has an insertion hole with a slot inside the insertion hole. One end of the second umbilical cord component is disposed on a plug, and the outer wall of the plug has fixing holes at equal intervals. A locking block is slidably assembled in the fixing hole, and a spring is connected between the locking block and the fixing hole. A detection sensor is disposed in the insertion hole, and the detection sensor is electrically connected to the bleeding simulation component.

5. The seamless switching medical simulation training system for childbirth and postpartum hemorrhage according to claim 3, characterized in that: The placenta model has several openings, and placenta adhesive blocks are attached to the openings via Velcro. Several insertion rods are connected to the outer wall of the placenta adhesive blocks.

6. The seamless switching medical simulation training system for childbirth and postpartum hemorrhage according to claim 1, characterized in that: The maternal model is equipped with a linear screw drive mechanism and a slide. The slide is driven to move by the linear screw drive mechanism. A first motor is mounted on the slide, and a first magnet is provided on the output shaft of the first motor. The infant model is provided with a corresponding second magnet to fix it to the slide by magnetic attraction.

7. The seamless switching medical simulation training system for childbirth and postpartum hemorrhage according to claim 1, characterized in that: The delivery belly assembly includes a belly layer, a belly airbag disposed inside the belly layer, and foam cotton. The undulation assembly includes an undulation plate, an undulation air pump assembly, and a servo motor. The undulation plate and the servo motor are disposed in the thoracic cavity of the belly layer. The output shaft of the servo motor is hinged to a connecting rod, and the other end of the connecting rod is hinged to the undulation plate, thereby driving the undulation plate to reciprocate. The undulation air pump assembly is connected to the belly airbag through a pipeline to realize inflation and deflation.

8. The seamless switching medical simulation training system for childbirth and postpartum hemorrhage according to claim 1, characterized in that: The bleeding simulation component includes a water tank and a peristaltic pump. The postpartum hemorrhage vaginal component is provided with a bleeding port. The peristaltic pump is connected to the water tank and the bleeding port to draw water from the water tank outlet and pump it to the bleeding port on the vaginal wall. The water tank cover is provided with a breathing valve to maintain the air pressure balance inside and outside the water tank.

9. The seamless switching medical simulation training system for childbirth and postpartum hemorrhage according to claim 1, characterized in that: The vaginal wall of the postpartum hemorrhage vaginal component is provided with a urethra for catheter insertion. It has a Hall sensor at its end to identify whether the catheter has been inserted correctly.

10. A seamless switching medical simulation training system for childbirth and postpartum hemorrhage based on virtual and real simulations, as described in claim 1, characterized in that: The maternal model has several hooks on its abdomen, and both the delivery abdomen component and the postpartum abdomen component have corresponding button locks; the delivery vagina component and the postpartum hemorrhage vagina component are respectively installed on the maternal model with screws.

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