Uterine and oral examination simulation teaching system

Abstract

The invention relates to a medical simulation teaching technology, in particular to a uterus and mouth examination simulation teaching system, which is characterized in that an entity part comprises a maternal model and an interactive cervix uteri simulation assembly; the data processing part comprises an intelligent control module, a teaching evaluation module and an intelligent feedback module; the visualization part comprises an AR visualization feedback module, a radial pressure sensor, an axial pressure sensor and a displacement sensor of the cervix uteri simulation assembly, and is used for synchronously collecting palpation stress and uterine mouth opening change and storing the palpation stress and the uterine mouth opening change in a warehouse; the teaching evaluation module automatically scores based on standard data, an AR terminal overlaps and displays a pressure threshold ring, a track guide line and judgment prompt, evaluation feedback and intelligent guidance to generate error correction key points, and reproducible training, objective assessment and closed-loop improvement are achieved.

Description

Technical Field

[0001] This invention relates to the field of medical simulation teaching, specifically to a high-fidelity simulation teaching system for cervical dilation examination (gynecology and obstetrics) that enables real-time data entry for practical operations, AR visualization-enhanced feedback, and reverse operation guidance. Background Technology

[0002] Teaching methods for cervical dilation examination often rely on theoretical lectures, video / clinical observation, and static model demonstrations, resulting in observational but impractical applications. Furthermore, static models typically only display a single cervical dilation state and a fixed cervical morphology, making it difficult to recreate the dynamic dilation process from one finger to ten fingers during the first stage of labor, as well as the differences in cervical dilation under different clinical scenarios. In addition, some simulation devices suffer from problems such as unstable module fixation, easy shaking during operation leading to distorted tactile feedback, limited sensing dimensions making it difficult to capture practical details, and the inability of the model to dynamically change.

[0003] Moreover, the evaluation of existing simulated teaching relies heavily on the subjective judgment of teachers, lacks data collection and retention of students' operation process, feedback is often delayed and unsystematic, and key data generated during the teaching process often lacks structured retention and traceable records. Students find it difficult to review and reflect on the historical data after class, cannot compare with standard movements, locate the cause of errors and continuously improve, resulting in students' practice remaining at a simple repetition level and low efficiency.

[0004] Furthermore, teaching programs that utilize AR often remain at the level of anatomical demonstrations or composite presentations, failing to directly guide practice. They also fail to leverage practical data to enhance AR visualization feedback and provide precise operational guidance, making it difficult for trainees to accurately judge the size of cervical dilation and identify the cervical condition. Summary of the Invention

[0005] The purpose of this invention is to provide a cervical examination simulation teaching system to solve the above-mentioned technical problems.

[0006] The cervical examination simulation teaching system provided by this invention includes a high-fidelity physical simulation module, a stable fixing mechanism, a multi-dimensional data acquisition module, an intelligent control module, a teaching evaluation module, and an intelligent feedback module.

[0007] The high-fidelity physical simulation module includes a maternal model and a cervical simulation component, wherein the cervical simulation component includes a replaceable cervical module and a variable aperture simulation mechanism.

[0008] The maternal model is equipped with an installation compartment, and the installation compartment is equipped with a transmission system, which is used to drive the replaceable cervical module to switch between modes.

[0009] The stabilizing and fixing mechanism is disposed in the installation compartment. The stabilizing and fixing mechanism includes a pin-type electromagnet locking assembly, a snap-fit ​​plate, and a slider. The snap-fit ​​plate is used to position the replaceable cervical module in place and restrict its rotation. The slider is used to connect the replaceable cervical module.

[0010] The multi-dimensional data acquisition module includes at least multiple radial pressure sensors, axial pressure sensors, and displacement sensors. The multiple radial pressure sensors are used to detect the radial force in each corner area around the cervix, the axial pressure sensors are used to detect the axial pressure, and the displacement sensors are used to detect changes in the cervical diameter.

[0011] The intelligent control module includes a hardware control unit, which controls an electromagnet locking component to change the shape of the cervix.

[0012] When the electromagnet locking component is energized, the pin extends, locking the replaceable cervical module; when the electromagnet locking component is de-energized, the pin retracts, releasing the replaceable cervical module.

[0013] The current of the electromagnet locking component is controlled to adjust the extension length of the pin. The greater the extension length of the pin, the greater the dilation of the cervix.

[0014] The teaching evaluation module scores and outputs the scores based on the data collected by the multi-dimensional data acquisition module, and the intelligent feedback module outputs improvement suggestions based on the scores.

[0015] Furthermore, the outer layer of the replaceable cervical module is a composite structure of medical-grade silicone and polyurethane elastomer, and different cervical states can be simulated by replacing the replaceable cervix with different hardness and elasticity.

[0016] Furthermore, the installation chamber includes a lower fixing plate and an upper fixing plate, and the transmission system and cervical simulation components are both installed inside the installation chamber.

[0017] Furthermore, the transmission system includes multiple gears and adjusting wheels. Rotating the adjusting wheels drives the gears to rotate, thereby enabling the replacement of cervical modules.

[0018] Furthermore, the snap-fit ​​plate is located at the rear of the replaceable cervical module, and the snap-fit ​​plate is provided with a sliding groove; the slider is circumferentially arranged in the sliding groove and can expand outward, and the replaceable cervical module is fixed on the slider so that the outer diameter of the replaceable cervical module increases when the inner diameter expands and achieves a stable fixation without shaking.

[0019] Furthermore, the electromagnet locking assembly is a servo-controllable pin-type electromagnet. When energized, the pin pops out and inserts into the snap-fit ​​plate to lock the replaceable cervical module. When de-energized, the pin retracts to release the replaceable cervical module.

[0020] Furthermore, the radial pressure sensors are evenly distributed along the circumference of the cervix and correspond to different fixed angle zones; the axial pressure sensors are located at the top of the cervical canal or at the stress point of the simulated fornix.

[0021] Furthermore, the hardware control unit samples, filters, calibrates, and synchronizes the data collected by the multi-dimensional data acquisition module, and uses the processed data for calculating the degree of cervical dilation and evaluating palpation behavior.

[0022] Furthermore, the teaching evaluation module has a built-in evaluation standard library, and the scoring dimensions include at least one of the following: cervical status, degree of cervical dilation, force of palpation and thrusting, threshold, diagnostic time and effective operation, and outputs the corresponding evaluation conclusion.

[0023] Furthermore, it also includes a visual feedback module and an intelligent guidance module. The visual feedback module includes a display terminal and a virtual model generation unit. The virtual model generation unit generates visual content based on the comparison results of standard operation data and actual operation data, which is then overlaid and presented by the display terminal. The intelligent guidance module generates operation guidance information based on the comparison results and outputs it in text, voice, or virtual guide lines.

[0024] The beneficial effects achieved by the present invention using the above structure are as follows:

[0025] (1) By constructing a near-realistic tactile and geometrically constrained environment through a maternal model and interactive cervical simulation components, trainees can repeatedly practice key skills in a safe environment;

[0026] (2) By using replaceable cervical modules to correspond to different clinical cervical states and simulating the dilation process from one finger to ten fingers, the training is no longer limited to a single static model and can cope with simulation training of the entire stage.

[0027] (3) The evaluation results and comparison results are superimposed on the real operation field of the AR visualization feedback module in the form of trajectory comparison guide lines, judgment prompts, etc., so as to realize error correction while operating. The evaluation feedback generates an error type diagram, which is explained and corrected, and relevant anatomical knowledge is provided through AR devices. The feedback efficiency is improved by combining virtual and reality.

[0028] (4) The system will retain the sensor data, scoring results and error types of each training session in a structured manner, so that trainees can review after class, compare at different stages and make targeted reinforcements. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the maternal model and cervical simulation component of the present invention;

[0030] Figure 2This is a schematic diagram of the sensor arrangement of the multi-dimensional data acquisition module of the present invention;

[0031] Figure 3 This is a schematic diagram of the stabilizing and fixing mechanism and cervical dilation of the present invention;

[0032] Figure 4 This is an overall framework diagram of the cervical examination simulation teaching system of the present invention;

[0033] Figure 5 This is a schematic diagram of the AR visualization feedback principle of the present invention.

[0034] The components include: 1. Maternal model; 2. Replaceable cervical module; 3. Variable aperture simulation mechanism; 4. Multi-dimensional data acquisition module; 401. Radial pressure sensor; 402. Axial pressure sensor; 403. Displacement sensor; 5. Stabilizing and fixing mechanism; 501. Electromagnetic locking assembly; 502. Clip plate; 503. Slider; 6. Installation chamber; 601. Lower fixing plate; 602. Upper fixing plate; 7. Gear; 8. Adjusting wheel. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0036] like Figure 1-4 As shown, this invention proposes a cervical examination simulation teaching system, including a high-fidelity physical simulation module and fixing mechanism, a sensing module, an intelligent control module, a teaching evaluation module, and an intelligent feedback module.

[0037] The high-fidelity physical simulation module of this embodiment includes a maternal model 1 and an interactive cervical simulation component. The maternal model 1 is integrally molded from medical-grade silicone and is used to simulate the soft tissue of the perineum, vagina, vaginal fornix and cervical structure, so that the operator can obtain a tactile feel and geometric relationship close to that of the real human body in terms of finger entry path, tissue damping and spatial constraints.

[0038] The cervical simulation component includes a replaceable cervical module 2 and a variable aperture simulation mechanism 3.

[0039] The outer layer of the replaceable cervical module is a composite structure of medical-grade silicone and polyurethane elastomer, which is used to provide different softness, hardness and resilience characteristics to represent different clinical cervical conditions, such as primiparous women, multiparous women, cervical edema, tough cervix, and cervical scars.

[0040] like Figure 1As shown, in this embodiment, an installation chamber 6 is installed inside the maternal model 1. The installation chamber 6 includes a lower fixing plate 601 and an upper fixing plate 602; the transmission system and the cervical simulation component are both installed inside the installation chamber 6.

[0041] The transmission system includes three gears 7 and an adjusting wheel 8. Rotating the adjusting wheel 8 can drive the gears to rotate and switch the cervical module 2.

[0042] The system drives gear 7 to rotate based on a set normal cervix (primiparous or multiparous woman), switching between different cervical modules 2.

[0043] To avoid tactile distortion and sensor data drift caused by cervical module shaking during operation, this embodiment sets up a stabilizing and fixing mechanism 5 in the installation chamber 6. The stabilizing and fixing mechanism 5 includes an electromagnet locking assembly 501, a snap-fit ​​plate 502, and a slider 503.

[0044] The snap-fit ​​plate 502 is located at the rear of the cervical module and is used to achieve rapid positioning and anti-rotation limit of the cervical module; the electromagnet locking assembly 501 is installed on the fixed shaft inside the installation chamber 6.

[0045] The slider 503 is arranged circumferentially in the groove of the snap-fit ​​plate 502. The replaceable cervical module 2 is fixed on the slider 503. The electromagnet locking component 501 extends to expand the inner diameter of the replaceable cervical module 2. At this time, the cervical module 2 will also drive the slider 503 to expand outward synchronously.

[0046] The expandable fixation allows the outer diameter to increase synchronously when the inner diameter of the replaceable cervical module 2 expands. The sensor obtains the result of the inner diameter expansion by detecting the expansion of the outer diameter, thereby obtaining the degree of cervical dilation.

[0047] Once the replaceable cervical module 2 is in place, the control unit drives the electromagnet to be energized, thereby achieving a non-shaking locking of the replaceable cervical module 2.

[0048] When it is necessary to replace the replaceable cervical module 2 to switch the cervical status, the control unit controls the electromagnet to de-energize and release, and the operator can quickly and manually replace the cervix.

[0049] Specifically, when a teacher is testing a student's ability to identify a unilateral transverse section, if the replaceable cervical module 2 is for multiparous women, then the replaceable cervical module 2 needs to be replaced. The teacher controls the unlocking via the interactive software, the electromagnet is de-energized and the iron core retracts, releasing the replaceable cervical module 2. At this time, rotating the adjusting wheel 8 will drive the replaceable cervical module 2 to be rotated to multiparous women through the transmission system.

[0050] In this embodiment, a servo-controllable pin-type electromagnet locking assembly 501 is used. After the electromagnet is energized, the iron core pops out and is inserted into the snap-fit ​​plate 502 to lock the position of the replaceable cervical module 2. At this time, the transmission system and the adjusting wheel 8 are locked.

[0051] After the cervix is ​​switched to multiparous cervix, the teacher controls the locking mechanism again through the interactive software. The electromagnet is then energized, and the iron core is inserted into the snap-fit ​​plate 502 after the replacement cervical module 2 is switched to multiparous cervix. The module is then pushed into the multidimensional data acquisition module 4, and the cervix of the multiparous cervix is ​​fixed.

[0052] This embodiment includes a multi-dimensional data acquisition module 4 for comprehensive data collection, storage, and feedback of the operator's palpation behavior and cervical dilation process. The multi-dimensional data acquisition module 4 includes at least an axial pressure sensor 401, a radial pressure sensor 402, and a displacement sensor 403. The axial pressure sensor 401 detects the operator's thrusting force and axial indentation force; the radial pressure sensor 402 detects the operator's dilation pressure on the cervical edge and the force distribution; and the displacement sensor 403 measures the change in cervical diameter or dilation degree and compares it with the operator's judgment of cervical dilation, enabling the system to determine whether the operator's assessment is correct or incorrect.

[0053] like Figure 2 As shown, in order to achieve full-dimensional sensing of displacement, axial pressure and radial pressure, this embodiment defines the axial measurement direction with the cervical canal axis as the reference, and evenly distributes multiple radial pressure sensors 402 along the circumference of the cervix. Each radial pressure sensor 402 corresponds to a fixed corner area of ​​the cervical periphery. At the same time, an axial pressure sensor 401 is set at the top of the cervical canal or the stress point of the simulated fornix to output axial pressure. A displacement sensor 403 is set in the cervical structure to output the real-time change in the cervical diameter or dilation degree.

[0054] The arrangement of the aforementioned measurement sensors decomposes the force and deformation generated by palpation into axial pressure components, radial pressure components in each corner area, and diameter displacement, and corresponds one-to-one with each sensor channel, thereby forming a full-dimensional acquisition dataset, which facilitates subsequent synchronous sampling, time-series alignment, and evaluation calculation.

[0055] like Figure 3 As shown, in the actual simulation, the system controls the extension length of the pin of the electromagnet locking assembly 501 by controlling the magnitude of the current.

[0056] After the pin of the electromagnet locking assembly 501 is inserted into the snap-fit ​​plate 502, it continues to extend and enter the replaceable cervical module 2, thereby pushing the cervical dilation of the replaceable cervical module 2 to simulate the degree of cervical dilation.

[0057] As the insertion depth of the pin of the electromagnet locking assembly 501 increases, the outer edge of the replaceable cervical module 2 undergoes an expansion displacement, and the displacement sensor 403 detects this displacement change.

[0058] Axial pressure sensor 401 and radial pressure sensor 402 respectively detect the axial pressure and radial pressure in each corner area caused by the expansion process.

[0059] The system calculates the degree of cervical dilation based on the detection data from the axial pressure sensor 401, radial pressure sensor 402, and displacement sensor 403, and in conjunction with the control current magnitude of the electromagnet locking component 501. This degree of dilation is used as a representation of the actual degree of cervical dilation for recording, comparing, and providing feedback on the operator's palpation and judgment.

[0060] The intelligent control module in this embodiment includes a hardware control unit and a software interaction unit. The hardware control unit is used to control the timing and current magnitude of the electromagnet locking or releasing, and triggers locking after the module is in place. It also samples, filters, calibrates and synchronizes the multi-dimensional data acquisition module 4, and processes the data. Furthermore, it is responsible for sending the guidance image generated by the intelligent feedback module to the AR visualization feedback module.

[0061] The software's interactive unit provides at least four functional areas: a personal center, free practice, assessment mode, and evaluation feedback, and supports both manual and automatic modes.

[0062] In manual mode, teachers or students can select parameters such as dilation level, cervical status type, and abnormality type through a computer or other terminal, and students can practice and memorize on their own within the practice range selected by the teacher.

[0063] In automatic mode, the system can automatically switch between dilation level and cervical status according to the preset training plan, and randomly generate questions in the assessment mode, requiring time limit to complete the identification and judgment.

[0064] In addition, students can also choose the above levels and states independently during free practice, and practice independently according to their own mastery of the knowledge points.

[0065] It also includes a speech recognition module and a speech interaction module. When students take self-tests, the speech interaction module can ask questions through sound, and the speech recognition module can collect students' answers and record them as text. The system judges the recognized text content and then the speech interaction module outputs whether the answer is correct.

[0066] When a teacher asks a question, the teacher can pre-record the question or send the real-time voice through the voice interaction module. Similarly, the voice recognition module collects the student's answer and records it as text, and then the voice interaction module outputs whether the answer is correct.

[0067] The teaching evaluation module in this embodiment has a built-in evaluation standard library and automatically scores students based on data collected by the multi-dimensional sensing module.

[0068] The scoring dimensions include at least the trainee's judgment of the cervical condition and dilation, whether the palpation force exceeds the threshold or is distributed irrationally, whether there is excessive thrusting, the diagnostic time spent completing the assigned task, the percentage of effective operations, and the accuracy rate of combining voice interaction input with the standard answer. The above dimensions are then combined to form a comprehensive score.

[0069] The teaching evaluation module extracts evaluation indicators based on sensor data and compares them with standard data to output evaluation conclusions; the evaluation feedback generates an error type map, finds the causes, explains and corrects them, and provides relevant anatomical knowledge; finally, the AR visualization feedback module overlays the feedback content onto the students' real field of vision.

[0070] like:

[0071] The teaching evaluation module determined that the radial pressure exceeded the threshold.

[0072] The evaluation feedback includes the location and degree of force exceeding the limit, suggestions to reduce the force, and reminders of relevant anatomical structures to emphasize gentleness and safety.

[0073] The teaching evaluation module compares the actual expansion diameter obtained by the displacement sensor with the judgment results submitted by the students, and outputs the actual value and the correct direction.

[0074] The intelligent feedback module in this embodiment is used to perform correlation analysis between the scoring results and the original operation data, output executable improvement suggestions, and form a closed-loop training.

[0075] The intelligent feedback module includes error pattern analysis, weak point alerts, personalized training reports, and visualization of data such as historical comparisons and growth curves.

[0076] In addition, in this embodiment, after the system collects data such as the force, position, trajectory and cervical diameter judgment results of the trainee's practical operation through the multi-dimensional data acquisition module, the data is processed by the hardware control unit and uploaded to the database in real time for classification, storage and correlation analysis.

[0077] The data storage and processing module constructs a database for the secure storage and rapid retrieval of massive amounts of practical data. It also extracts key operational indicators from the collected raw data and compares them with preset standard operational data to identify operational deviations and problems, and proposes improvement suggestions.

[0078] Key operational indicators include at least intensity indicators, trajectory and coverage indicators, deformation and judgment indicators, and process indicators.

[0079] In one implementation, standard operating data is indexed according to training scenarios, and the index includes cervical dilation level and cervical status type.

[0080] When the system enters free practice or assessment mode, it automatically retrieves the corresponding standard operation data based on the current scenario for comparison.

[0081] Specifically, such as Figure 4 , 5 As shown, the system also includes an AR visualization feedback module and an intelligent guidance module;

[0082] The AR visualization feedback module consists of an AR display terminal and a virtual model generation unit. The virtual model generation unit compares standard operation data with actual operation data and generates visualization content in real time based on the comparison results. This visualization content is then overlaid on the real operation scene through the AR terminal, achieving synchronous presentation of real operation and virtual data enhancement.

[0083] In one implementation, the visualized content includes:

[0084] Pressure comparison: A pressure threshold line is superimposed around the cervix, and the section exceeding the threshold is dynamically indicated;

[0085] Trajectory comparison: Overlay guide lines on the model surface to compare the student's actual palpation trajectory with the standard trajectory;

[0086] Judgment and Comparison: Displays the difference between the current cervical dilation level and the student's judgment value within the field of view.

[0087] The intelligent guidance module generates targeted operation guidance instructions based on data comparison results and visual feedback content, and pushes them in real time through AR terminals in the form of text, voice, virtual guide lines, etc.

[0088] For example, when excessive force is detected, the terminal displays "Force exceeds the limit, please reduce by 30%" and overlays a virtual pressure threshold line;

[0089] When the exploration path is disordered or insufficiently covered, an optimal operation trajectory guide line is generated to guide the trainee to adjust the palpation path and sequence.

[0090] In this embodiment, the teaching evaluation module outputs evaluation feedback, and the AR visualization feedback module forms a closed loop of collection, judgment, interpretation, and overlay presentation.

[0091] The AR visualization feedback module provides anatomical images and overlays a pressure threshold ring around the cervix, highlighting the area and displaying prompts such as "Pressure is too high, reduce pressure." It also provides guiding arrows or trajectory lines for the next recommended palpation direction.

[0092] The evaluation feedback includes the actual value, student value, error magnitude, and key points for review;

[0093] The AR visualization feedback module displays the actual value and the student's value side by side in the field of view, overlaying a reference image prompt according to the expansion level, guiding the student to recalibrate at the same position.

[0094] For details, please refer to Figure 5 Users can directly see the real world through the transparent screen of the AR display terminal. The AR display terminal receives the real-world image and the virtual model generated by the intelligent guidance module, and projects the virtual model onto the transparent display screen, ultimately superimposing the guidance image onto the real world to provide real-time guidance to the user.

[0095] To simplify the operation of the device, the present invention also provides another embodiment, including a high-fidelity physical simulation module, a fixing mechanism, a sensing module, and an MR device;

[0096] The difference from the first embodiment is that this embodiment constructs a virtual scene using an MR device and adds images from a high-fidelity physical simulation module to the virtual scene using the camera of the MR device;

[0097] In this embodiment, the intelligent control module, teaching evaluation module, and intelligent feedback module are all set in the MR device. Teachers set up the software through the MR device, and students also receive instructions from the virtual model during operation through the MR device.

[0098] Specifically, in this embodiment, the MR device preferably adopts a head-mounted mixed reality terminal, which is used to construct virtual scenes and complete the fusion of real images and virtual guidance.

[0099] MR devices can be optical or video-based transparent terminals; they can use HoloLens 2 with a transparent waveguide display and multiple cameras / depth sensors; or AppleVision Pro with multiple outward-facing cameras and depth sensing capabilities; or Magic Leap 2 with a ToF depth sensor and multiple environmental cameras.

[0100] To simplify system operation, this embodiment integrates the intelligent control module, teaching evaluation module, and intelligent feedback module within the MR device; and completes functions such as data acquisition, evaluation, feedback, and overlay display through a wired or wireless data link between the MR device and the high-fidelity physical simulation module.

[0101] Once the MR device is started, it uses its environmental camera and depth sensor to perform spatial tracking and environmental mapping, generating coordinates in the virtual scene that are consistent with the real space.

[0102] A recognizable visual marker is set on the outer surface of the parent model, preferably a QR code;

[0103] The MR device uses an RGB camera to identify the marker and obtain its position, then maps the parent model onto the coordinates of the virtual scene.

[0104] The sensing module sends sensor data to the MR device via wired or wireless means; the intelligent control module receives the data frames and performs calibration, timing alignment and feature extraction.

[0105] The MR device uses its perspective view as a real background and overlays virtual guidance on it to provide necessary guidance for the trainee's cervical examination process.

[0106] The final teaching evaluation module completes the judgment and scoring based on standard data and scoring rules. The evaluation feedback generates an error type diagram, finds the cause, explains and corrects it, provides relevant anatomical knowledge, and displays it in a virtual scene.

[0107] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A cervical examination simulation teaching system, characterized in that, It includes a high-fidelity physics simulation module, a stable fixing mechanism, a multi-dimensional data acquisition module, an intelligent control module, a teaching evaluation module, and an intelligent feedback module; The high-fidelity physical simulation module includes a maternal model and a cervical simulation component, wherein the cervical simulation component includes a replaceable cervical module and a variable aperture simulation mechanism. The maternal model is equipped with an installation compartment, and the installation compartment is equipped with a transmission system, which is used to drive the replaceable cervical module to switch between modes. The stabilizing and fixing mechanism is disposed in the installation compartment. The stabilizing and fixing mechanism includes a pin-type electromagnet locking assembly, a snap-fit ​​plate, and a slider. The snap-fit ​​plate is used to position the replaceable cervical module in place and restrict its rotation. The slider is used to connect the replaceable cervical module. The multi-dimensional data acquisition module includes at least multiple radial pressure sensors, axial pressure sensors, and displacement sensors. The multiple radial pressure sensors are used to detect the radial force in each corner area around the cervix, the axial pressure sensors are used to detect the axial pressure, and the displacement sensors are used to detect changes in the cervical diameter. The intelligent control module includes a hardware control unit, which controls an electromagnet locking component to change the shape of the cervix. When the electromagnet locking component is energized, the pin extends, locking the replaceable cervical module; when the electromagnet locking component is de-energized, the pin retracts, releasing the replaceable cervical module. The current of the electromagnet locking component is controlled to adjust the extension length of the pin. The greater the extension length of the pin, the greater the dilation of the cervix. The teaching evaluation module scores and outputs the scores based on the data collected by the multi-dimensional data acquisition module, and the intelligent feedback module outputs improvement suggestions based on the scores.

2. The cervical examination simulation teaching system according to claim 1, characterized in that, The outer layer of the replaceable cervical module is a composite structure of medical-grade silicone and polyurethane elastomer. Different cervical conditions can be simulated by replacing the replaceable cervical modules with different hardness and resilience.

3. The cervical examination simulation teaching system according to claim 1, characterized in that, The installation chamber includes a lower fixed plate and an upper fixed plate, and the transmission system and cervical simulation components are both installed inside the installation chamber.

4. The cervical examination simulation teaching system according to claim 3, characterized in that, The transmission system includes multiple gears and adjusting wheels. Rotating the adjusting wheels drives the gears to rotate, thereby enabling the replacement of cervical modules.

5. The cervical examination simulation teaching system according to claim 1, characterized in that, The snap-fit ​​plate is located at the rear of the replaceable cervical module, and the snap-fit ​​plate is provided with a sliding groove; the slider is arranged circumferentially in the sliding groove and can expand outward, and the replaceable cervical module is fixed on the slider so that the outer diameter of the replaceable cervical module increases when the inner diameter expands and achieves a stable fixation without shaking.

6. The cervical examination simulation teaching system according to claim 1, characterized in that, The electromagnet locking assembly is a servo-controlled pin-type electromagnet. When energized, the pin pops out and inserts into the snap-fit ​​plate to lock the replaceable cervical module. When de-energized, the pin retracts to release the replaceable cervical module.

7. The cervical examination simulation teaching system according to claim 1, characterized in that, The radial pressure sensors are evenly distributed along the circumference of the cervix and correspond to different fixed angle zones; the axial pressure sensors are located at the top of the cervical canal or at the stress point of the simulated fornix.

8. The cervical examination simulation teaching system according to claim 1, characterized in that, The hardware control unit samples, filters, calibrates, and synchronizes the data collected by the multi-dimensional data acquisition module, and uses the processed data for calculating the degree of cervical dilation and evaluating palpation behavior.

9. The cervical examination simulation teaching system according to claim 1, characterized in that, The teaching evaluation module has a built-in evaluation standard library. The scoring dimensions include at least one of the following: cervical status, degree of cervical dilation, force of palpation and thrusting, threshold, diagnostic time and effective operation, and outputs the corresponding evaluation conclusion.

10. The cervical examination simulation teaching system according to claim 1, characterized in that, It also includes a visual feedback module and an intelligent guidance module. The visual feedback module includes a display terminal and a virtual model generation unit. The virtual model generation unit generates visual content based on the comparison results between standard operation data and actual operation data, and the display terminal overlays and presents the visual content. The intelligent guidance module generates operation guidance information based on the comparison results and outputs it in text, voice or virtual guidance lines.

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