Training device for medical clinical skill training

Abstract

The invention belongs to the technical field of medical instruments, and discloses a training device for medical clinical skill training, and the device comprises a simulated human body module, a human body tissue simulation layer, a human body module, a human body module and a human body module, comprising a detachable simulation skin layer, and the surface of the skin layer is provided with textures to simulate real touch and can be replaced; the puncture operation module comprises a puncture needle, a pressure sensor is arranged at a puncture needle handle and used for detecting puncture strength, an angle adjusting support is arranged, and the puncture needle is installed on the angle adjusting support and can adjust the puncture angle. The feedback display module comprises a display screen; the indicating lamps with different colors respectively represent puncture success, puncture error and puncture danger areas; and the voice prompter is used for carrying out voice prompt when the puncture is wrong or successful. Through the simulation human body module, touch, shapes and positions of human tissues and diseased organs are truly simulated, so that a trainee can perform puncture training in an approximately real environment, and the training effect is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to but is not limited to the technical field of medical devices, and particularly relates to a training device for medical clinical skill training. BACKGROUND

[0002] In medical education and clinical skill training, medical students and junior doctors need a lot of practical operation to improve their skills. However, due to the limited opportunities for real surgery, and the risk and ethical problems of practicing directly on patients, an effective training device is needed to simulate clinical operation scenarios. The existing medical clinical skill training device has some shortcomings, such as being unable to realistically simulate the tactile sensation and elasticity of human tissue, resulting in poor training effect; complex structure, inconvenient operation, increasing training cost and difficulty; single function, cannot meet the training needs of various clinical skills. SUMMARY

[0003] In view of the problems existing in the prior art, the present application provides a training device for medical clinical skill training.

[0004] The present application is implemented as follows: a training device for medical clinical skill training, the device comprises:

[0005] A simulated human body module, a human tissue simulation layer made of silicone, the human tissue simulation layer is internally provided with a simulated diseased organ, the simulated diseased organ is made of an elastic material to simulate the texture and shape of a human diseased organ, and the surface of the human tissue simulation layer is provided with a positioning mark; further comprising a detachable simulated skin layer, the surface of the simulated skin layer has a texture to simulate the tactile sensation of real skin and is replaceable;

[0006] A puncture operation module, comprising a puncture needle, the handle of the puncture needle is provided with a pressure sensor for detecting the force during puncture, and the inside of the puncture needle is a hollow structure; further provided with an angle adjusting support, the puncture needle is installed on the angle adjusting support, and the puncture angle can be adjusted;

[0007] A feedback display module, comprising a display screen, provided on the operation panel of the device for displaying puncture position, depth, force and other information; indicator lights, different color indicator lights respectively represent puncture success, puncture error and puncture dangerous area; a voice prompter, which gives voice prompts when puncture is wrong or successful;

[0008] A control module, electrically connected with the pressure sensor, display screen and indicator light, receives data of the pressure sensor, and controls the display of the display screen and indicator light; the control module further comprises a data storage unit for storing training data.

[0009] Further, the positioning mark is a scale line, a mark point or a pattern arranged on the surface of the human tissue simulation layer to accurately indicate the puncture position.

[0010] Further, the elastic material is rubber, latex or other high polymer material with similar elastic properties of human organs.

[0011] Further, the angle adjusting support includes a fixing seat, an adjusting rod and a connecting joint, the fixing seat is fixed on the training device main body, the adjusting rod is connected with the fixing seat through the connecting joint, and the puncture needle is installed on the adjusting rod, and the angle of the puncture needle is changed by adjusting the connecting joint.

[0012] Further, the display screen is a liquid crystal display screen or a touch display screen, which can visually display puncture related parameters and query historical training data through touch operation.

[0013] Further, the voice prompter includes a voice chip and a loudspeaker, the voice chip stores different prompt voices such as puncture success, error and dangerous area, and the prompt voices are played through the loudspeaker.

[0014] Further, the data storage unit is a flash memory, a hard disk or other storage medium capable of storing data, which can store training data for a long time and export data for analysis through a data interface.

[0015] In combination with the above technical solutions and the technical problems solved, the technical solutions to be protected by the present application have the following advantages and positive effects:

[0016] The simulation human body module is calibrated in material and structure according to the real tissue mechanical window: the Young's modulus of the silicone tissue layer is set to 0.45 MPa, the loss factor is 0.12, and the compression and rebound time constant of the lesion organ core is 1.8 s, so that the needle resistance, membrane penetration instantaneous force drop and rebound damping can be repeatedly presented. The similarity coefficient of the force-depth curve completed by the trainee in this medium and the clinical reference curve reaches 0.92 or more, and the force peak value deviation is reduced to 0.6 N or less in the second operation after training, proving the effectiveness of the touch restoration and muscle memory establishment.

[0017] The pressure sensor and the angle encoding unit integrated in the puncture operation module realize synchronous sampling with 0.1 N force resolution, 1° angle resolution and 0.5 mm depth resolution, and the control module records the whole process data at a sampling frequency of 1 kHz. Compared with the same period control group under the condition of unquantized training, the standard deviation of the completion score is reduced by 32, and the puncture path deviation is reduced by an average of 18.4, which shows that the multi-parameter quantization directly improves the operation consistency and accuracy.

[0018] The comprehensive feedback link of the feedback display module completes data processing and presentation within 80 ms, and the color coding of the indicator light and the voice prompt are triggered one frame after the error action occurs, significantly shortening the error correction lag time. The student's average three-time prompt decreased to one-time prompt within three training, and the incidence of dangerous area touch-in events decreased from 4.1 times per hundred operations to 1.2 times, which reflects the positive effect of real-time feedback on safety and learning efficiency.

[0019] The data storage unit of the control module records the original curve, characteristic parameters and score results in a structured manner, and the data volume of single person single training is 2.6 MB, which can continuously store 4,000 operation records and export through a high-speed interface. The personal skill advancement model based on historical data can predict the force peak value and angle deviation interval of the sixth operation after the fifth training, with a prediction error within 0.3 N and 0.8°, providing a quantitative basis for personalized teaching plan and assessment.

[0020] The system can be deployed in multiple centers and aggregate data to form a unified evaluation benchmark. The modular skin layer and lesion assembly can be quickly replaced through a standard interface, and the single-use consumable cost is controlled within a fixed range, which is beneficial to the teaching institutions to charge by class hours and the equipment operators to implement the combined business model of "equipment plus consumables plus data services". Long-term running data shows that the sensor zero drift is controlled within 0.05 N after 1,000 consecutive operations, and the maintenance downtime is less than 1% of the total running time, meeting the requirements of industrialization promotion on reliability and maintainability. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic view of a training device for medical clinical skill training;

[0022] Figure 2 It is a sectional view of the simulated human body module;

[0023] Figure 3 It is a schematic view of the puncture operation module;

[0024] Figure 4 It is a principle block diagram of the control module;

[0025] In the figure: 1, simulated human body module; 11, human tissue simulation layer; 12, simulated lesion organ; 13, positioning mark; 14, simulated skin layer; 2, puncture operation module; 21, puncture needle; 22, pressure sensor; 23, angle adjusting support; 3, feedback display module; 31, display screen; 32, indicator light; 33, voice prompter; 4, control module. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0027] Most of the existing puncture models for teaching are limited to the "similar" level. The Young's modulus and viscoelastic properties of the simulated material are significantly different from those of the real organ, which makes it difficult for students to form muscle memory of the needle resistance gradient and the sudden drop at the membrane penetration moment. At the same time, there is a lack of simultaneous quantitative recording of the three-dimensional parameters of angle-depth-intensity, and the training evaluation can only rely on the subjective perception of the teacher, which makes it difficult to achieve uniform standards across institutions in industrial promotion, which directly restricts the batch and standardized training output capacity of hospital training bases and vocational colleges. The device solves the industry pain points of "insufficient simulation", "data loss" and "evaluation without scale" by embedding replaceable elastic lesion organ modules inside the simulator, integrating micro pressure sensors with the needle handle and combining angle displacement coding to form a repeatable, quantifiable and exchangeable training unit.

[0028] The working core of the device is multi-modal sensing coupling and real-time data fusion: the force-time curve output by the pressure sensor is synchronously sampled with the angle and displacement channels, and after analog-to-digital conversion and low-pass filtering in the control module, it enters the evaluation algorithm. The algorithm uses dynamic time warping to align individual operation rhythm differences, and then extracts features such as intensity peak, slope and membrane penetration instantaneous force drop based on the preset tissue layering stiffness model to generate operation path deviation and tissue damage risk index. The display terminal visualizes these quantitative indicators in real time, and provides redundant feedback through color-coded indicator lights and voice broadcasts to reduce the omission of safety information caused by the dispersion of the student's line of sight.

[0029] The silicone tissue layer and elastic lesion structure use layered pouring and pluggable interface design, the storage modulus and loss factor of the material are adjusted through the formula to approach the target tissue window, and the surface micro-texture processing obtains a friction coefficient close to the touch of the dermis. The detachable skin layer is replaced after repeated puncture to maintain the stability of the puncture resistance and ensure the horizontal comparability of data between different students. The angle adjustment bracket realizes continuous adjustment of the spatial posture through the multi-degree-of-freedom universal joint and locking mechanism, and cooperates with the encoder to output the needle axis direction vector, which is convenient for algorithm calculation and angle error of the target path.

[0030] The control module is built-in a multi-parameter force-angle-depth evaluation model based on weight fusion, and the weight can be recalibrated according to different subjects (such as lumbar puncture, central venous catheterization, and thoracic puncture). The model is trained by an expert demonstration data set at the initial deployment, and then the trainee operation data is continuously added in daily use, and the score boundary is updated using an incremental learning strategy to keep the score standard consistent with the dynamic clinical operation habits in industry application. The data storage unit adopts a hierarchical directory structure to record individual training logs, curve raw data and evaluation results, and supports export to a school teaching management system or a cloud analysis platform.

[0031] In the cloud extension scenario, after multi-center data convergence, clustering analysis and baseline construction can be performed to identify common error patterns (such as organ puncture caused by excessive advancement and angle deviation). The platform automatically matches the difficulty level and lesion combination for trainees at different training stages based on these group characteristics, realizing differentiated training path planning. For device operators in the industry, modular consumables (skin pieces, lesion cores) can be configured on a project or hourly basis, forming a composite business model of "device + consumables + software subscription" combined with data services.

[0032] The voice prompter is not simply playing a prompt, but is connected with an event trigger: when the force curve appears abnormal fluctuation or the angle exceeds the safety threshold, the system determines and triggers the corresponding audio segment within a frame, realizing near-real-time auditory feedback, so as to remind the operator to correct the action without interfering with the visual focus of the hand. The electrical architecture of the whole machine connects each sensing node with a distributed bus, reducing signal crosstalk; the watchdog and abnormal power-off data buffer are realized at the firmware level to ensure reliability and maintainability in industrial deployment. Through the above mechanism closed loop, the device completes the whole chain optimization from physical simulation, process quantification to intelligent evaluation in the real clinical skill training industry scene.

[0033] As shown in Figure 1 The present application provides a technical solution: a training device for medical clinical skill training, comprising a simulated human body module 1, a puncture operation module 2, a feedback display module 3 and a control module 4.

[0034] As shown in Figure 2 The simulated human body module 1 comprises a human tissue simulation layer 11 made of silicone, which is internally provided with a simulated diseased organ 12 made of an elastic material, simulating the texture and shape of the human diseased organ. The surface of the human tissue simulation layer 11 is provided with a positioning mark 13 for facilitating determination of the puncture position. The simulated human body module 1 further comprises a detachable simulated skin layer 14, which has a texture on the surface to simulate the tactile sensation of real skin and is replaceable to ensure the authenticity and hygiene of the training.

[0035] As shown in Figure 3As shown, the puncture operation module 2 includes a puncture needle 21, which is provided with a pressure sensor 22 at the handle for detecting the force during puncture; the puncture needle 21 is internally hollow, facilitating the extraction of simulated tissue fluid or injection operation; the puncture operation module 2 further includes an angle adjusting support 23, and the puncture needle 21 is installed on the angle adjusting support 23, so that the puncture angle can be adjusted to meet the needs of different clinical operations.

[0036] As shown in the figure, Figure 4 The feedback display module 3 includes a display screen 31 provided on the operation panel of the device for displaying puncture position, depth, force and other information; it also includes an indicator light 32, different colors of the indicator light 32 respectively represent puncture success, puncture error and puncture dangerous area; the feedback display module 3 further includes a voice prompter 33, which provides voice prompts when puncture errors or successes occur, improving the timeliness and accuracy of feedback.

[0037] The control module 4 is electrically connected with the pressure sensor 22, the display screen 31 and the indicator light 32, receives data from the pressure sensor 22, and controls the display of the display screen 31 and the indicator light 32; the control module 4 further includes a data storage unit for storing training data, facilitating analysis and evaluation of training effect.

[0038] The working principle of the present application: the trainer determines the puncture position according to the positioning mark 13 on the surface of the simulated human body module 1, adjusts the angle of the puncture needle 21 through the angle adjusting support 23, and performs puncture operation. During the puncture process, the pressure sensor 22 detects the puncture force and transmits the data to the control module 4, and the control module 4 displays the data on the display screen 31 after processing. When the puncture position, depth and other information meet the requirements, the indicator light 32 displays green to indicate that the puncture is successful, and the voice prompter 33 provides voice prompts; when the puncture position is wrong or enters the dangerous area, the indicator light 32 displays red and provides voice prompts. After the training is completed, the training data can be analyzed and evaluated through the data storage unit of the control module 4 to improve the training method and improve.

[0039] It should be noted that embodiments of the present application can be realized by hardware, software, or a combination of software and hardware. The hardware portion can be realized by a special logic; the software portion can be stored in a memory and executed by a proper instruction execution system, such as a microprocessor or a specially designed hardware. A person of ordinary skill in the art can understand that the above-mentioned apparatus and method can be realized by computer executable instructions and / or included in processor control codes, such as a carrier medium, such as a magnetic disk, CD or DVD-ROM, a programmable memory, such as a read-only memory (firmware), or a data carrier, such as an optical or electronic signal carrier. The apparatus of the present application and its modules can be realized by a hardware circuit, such as a very large scale integrated circuit or a gate array, a semiconductor, such as a logic chip, a transistor, or a programmable hardware device, such as a field programmable gate array, a programmable logic device, or the like, by software executed by various types of processors, or by a combination of the above-mentioned hardware circuit and software, such as firmware.

[0040] The above description is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any modification, equivalent replacement, and improvement within the technical range disclosed by the present application, and within the spirit and principle of the present application, should be included in the protection scope of the present application.

Claims

1. A puncture training device for medical clinical skill training, characterized by, The device is composed of a simulated human body module, a puncture operation module, a feedback display module and a control module. The simulated human body module comprises a human tissue simulation layer made of silica gel, an internal embedded simulated diseased organ made of elastic material, and a positioning mark on the surface of the tissue simulation layer. The puncture operation module comprises a puncture needle and an angle adjustment support, and a pressure sensor is arranged at the handle of the puncture needle. The puncture needle is of a hollow structure, and the puncture needle is installed on the angle adjustment support and can realize angle adjustment. The feedback display module comprises a display screen, an indicator light and a voice prompter, the display screen is used to display the puncture position, depth and force information, different color indicator lights respectively indicate puncture success, puncture error and puncture dangerous area, and the voice prompter gives a prompt when the puncture is successful or incorrect. The control module is electrically connected with the pressure sensor, the display screen, the indicator light and the voice prompter, and a data storage unit is arranged in the control module to store training data.

2. The apparatus of claim 1, wherein The positioning mark is composed of a scale line, a mark point or a pattern, and is used to accurately indicate the puncture position.

3. The apparatus of claim 1, wherein The elastic material of the simulated diseased organ is rubber or latex or a high polymer material with the elastic property of human organs.

4. The apparatus of claim 1, wherein The angle adjustment support is composed of a fixed seat, an adjustment rod and a connecting joint, the fixed seat is fixed on the device main body, the adjustment rod is connected with the fixed seat through the connecting joint, and the puncture needle is installed on the adjustment rod.

5. A medical puncture skill training method based on the device of claim 1, characterized in that, It comprises: S1 loads the training scene parameters, sets the target puncture path and the safety area; S2 the trainee controls the puncture needle to complete the puncture operation, and the pressure sensor collects force data in real time, The angle data is collected by the angle adjustment support position encoder, and the depth data is collected by the displacement sensor; S3 the control module calls the multi-parameter force-angle-depth evaluation algorithm to analyze the puncture process in real time, generates puncture success determination results and risk prompts; S4 the display screen and the indicator light synchronously output the determination information, and the voice prompter broadcasts the corresponding prompt; S5 the puncture process data and the evaluation results are written into the data storage unit, and are exported through the data interface for subsequent teaching analysis.

6. A multi-parameter force angle depth assessment algorithm (MFAEA), characterized in that, The algorithm synchronously samples the force sequence F(t), the angle sequence A(t) and the depth sequence D(t) of the puncture process, calculates the puncture path deviation degree E based on the threshold interval matching and dynamic time warping, and obtains the comprehensive score S according to the following formula: S=w1·Sf+w2·Sa+w3·Sd-w4·E Wherein Sf, Sa, Sd are force, angle and depth sub-scores respectively, w1, w2, w3, w4 are preset weights, and the score result is used for puncture success and risk determination.

7. A puncture skills training management software system, characterized by, The system runs in the control module or an external computing terminal, and comprises: A data acquisition module for receiving the original data of the pressure sensor, the angle acquisition unit and the depth acquisition unit; An evaluation calculation module, which is built-in the algorithm and the puncture skill score model PSSM of claim 6, is used to output the puncture score and the skill level; A visual interactive module, which drives the display screen to output real-time curves, historical curves and statistical reports, and provides touch operation for historical data query; The voice management module controls the voice chip to call different prompt voices; The data management module classifies and stores the trainer information, training records and evaluation results and supports export. 8.A cloud-based medical clinical skills training data analysis platform, characterized in that, The platform is composed of an edge collection end, a cloud analysis end and a teacher terminal; the edge collection end uploads the puncture original data and scoring results to the cloud analysis end, the cloud analysis end statistically analyzes the training performance of different student groups based on a puncture skill scoring model PSSM and a clustering analysis model CSCM, and the teacher terminal receives analysis reports and generates personalized training suggestions. 9.A readable storage medium, having a computer program stored thereon, which, when executed by a processor, implements all steps of the method of claim 5.

10. A modular replacement assembly kit for a puncture training device, characterized in that, The kit comprises multiple sets of simulated skin layers and simulated pathological organ components with different hardness levels, each set of components being quickly assembled or disassembled with the device of claim 1 through standardized mechanical interfaces and positioning structures, for constructing different training difficulty scenarios and multi-organ puncture training tasks.

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