Nerve block simulation training method and related equipment

Abstract

The invention discloses a nerve block simulation training method and related equipment. The method comprises the following steps: constructing ultrasonic simulation models of different tissue parts of a human body based on standard three-dimensional anatomical structure information and simulated ultrasonic information of the different tissue parts of the human body, and associating the ultrasonic simulation models of the different tissue parts with a tissue simulator through coordinate information; tracking relative position information and relative angle information of the simulation ultrasonic probe and the tissue simulator, and generating a corresponding simulation ultrasonic picture through the ultrasonic simulation model; tracking position information and angle information of the simulated nerve block puncture needle in the tissue simulator, taking an intersection of a coordinate range of the puncture needle and a coordinate range of the section of the simulated ultrasonic probe to obtain a coplanar coordinate range of the puncture needle and the section of the simulated ultrasonic probe, and converting the coplanar coordinate range into a simulated puncture needle ultrasonic picture in a point-to-point manner. The problems that simulation puncture parts are limited, clinical conditions cannot be simulated truly, the efficiency of conversion from simulation teaching to clinic is reduced, and the application value of clinical practical cases is lacked are solved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of medical teaching. More specifically, the present invention relates to a nerve block simulation training method and related equipment. Background Art

[0002] Ultrasound-guided nerve block has been widely used in clinical anesthesia and pain treatment. Ultrasound plays an important role in improving the success rate of nerve block and reducing related complications. The in-plane technique ensures continuous real-time visualization of the puncture needle throughout the puncture process, minimizing the risk of accidental nerve or tissue injury, and is thus widely used in ultrasound-guided nerve block. However, for beginners in anesthesiology or pain medicine, due to insufficient anatomical knowledge and operating experience, the technique of ultrasound-guided nerve block is a challenging operation. In particular, the in-plane technique requires excellent hand-eye coordination and spatial awareness to keep the needle in the ultrasound beam path, and thus beginners need continuous learning and practice.

[0003] For ethical, safety, and patient preference reasons, currently, it is common to observe anatomical structures through actual operation on real people and conduct simulation operation training on simulators. Currently, most nerve block training simulators simulate the arrangement structure and acoustic characteristics of specific parts of bones, blood vessels, muscles, and nerves according to the anatomical structures of different parts of the body for ultrasound-guided nerve block anesthesia training. However, most of the above-mentioned simulators can only perform ultrasound-guided nerve block training for a single tissue structure and cannot meet the training needs of multi-site nerve block throughout the body in clinical practice. At the same time, in clinical actual operation, due to factors such as the patient's anatomical structure, body position, and the dominant hand of the operator, the operation plan and risk level of anesthetic nerve block are different. Currently, the anatomical structure and placement method of the puncture model in ultrasound-guided nerve block simulation teaching cases are usually fixed, and the puncture approach is limited, unable to truly simulate the clinical situation, greatly reducing the efficiency of the transformation from simulation teaching to clinical practice and lacking the application value of clinical actual cases.

[0004] In addition, currently, some clinical nerve block surgeries are difficult to operate, and X-ray fluoroscopy and CT-guided positioning are mostly used, lacking the mainstream ultrasound-guided block standard (such as trigeminal ganglion block). Compared with ultrasound technology, these methods not only cost high, cannot provide real-time feedback on the puncture situation, but also increase the radiation exposure of operators and patients. Summary of the Invention

[0005] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further detailed in the Detailed Description section. The Summary of the Invention section of the present invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0006] To solve the problems that the limited simulation puncture sites cannot truly simulate the clinical situation, greatly reducing the efficiency of the conversion from simulation teaching to clinical practice, and lacking the application value of actual clinical cases, and that ultrasound-guided nerve block requires excellent hand-eye coordination and spatial awareness to keep the needle in the path of the ultrasound beam, and beginners especially need continuous learning and practice. In the first aspect, the present invention proposes a nerve block simulation training method, which includes: Construct an ultrasound simulation model of different tissue parts of the human body based on the standard three-dimensional anatomical structure information and simulated ultrasound information of different tissue parts of the human body, and associate the ultrasound simulation models of different tissue parts with the tissue simulator through coordinate information; Track the relative position information and relative angle information between the simulated ultrasound probe and the tissue simulator, and generate a corresponding simulated ultrasound image through the ultrasound simulation model; Track the position information and angle information of the simulated nerve block puncture needle in the tissue simulator, take the intersection of the coordinate range of the puncture needle and the coordinate range of the cross-section of the simulated ultrasound probe to obtain the coplanar coordinate range of the puncture needle and the cross-section of the simulated ultrasound probe, and convert it point by point into a simulated puncture needle ultrasound image.

[0007] Optionally, obtain the pressure intensity information of the simulated ultrasound probe; Generate a use trigger feedback signal based on the tracked relative position information, relative angle information between the simulated ultrasound probe and the tissue simulator, and the pressure intensity information, and the use trigger feedback signal is used to change the simulated ultrasound cross-sectional image in the simulated ultrasound information to indicate tissue deformation and / or change in blood vessel visibility.

[0008] Optionally, it further includes: Generate puncture scene information based on the simulated patient's condition; Adjust the pose of the tissue simulator based on the puncture scene information.

[0009] Optionally, it further includes: Automatically record the time from when the simulated operator punctures the tissue simulator with the needle tip to the successful block; Evaluate the operation of the simulated operator according to the coplanarity degree and time between the cross-section of the simulated ultrasound probe and the nerve block needle, and the total time for the needle tip to approach the target nerve.

[0010] Optionally, it further includes: Collect the CT and / or MRI image data sets of the organizational structure in the non-punctured stage of the target anesthesia operation area of the target patient; Perform three-dimensional reconstruction based on the CT and / or MRI image data sets of the organizational structure to construct a three-dimensional image of the organizational structure in the target anesthesia operation area; Simulate and transform into ultrasonic image signals based on CT and / or MRI images, set the target blocked nerve or region, and construct a theoretical ultrasonic simulation model of the organizational structure of the target anesthesia operation area of the target patient at the non-punctured stage, so as to practice and comprehensively analyze different puncture approaches for the target patient, and select an ultrasonic-guided nerve block plan.

[0011] Optionally, the simulating and transforming into ultrasonic image signals based on CT and / or MRI images, setting the target blocked nerve or region, and constructing a theoretical ultrasonic simulation model of the organizational structure of the target anesthesia operation area of the target patient at the non-punctured stage includes: Perform tissue segmentation on the CT and / or MRI imaging data set and correspond to the actual tissue, so as to extract and analyze its acoustic characteristics; By constructing a three-dimensional coordinate system, point-to-point transform the three-dimensionally reconstructed CT and / or MRI imaging data into ultrasonic imaging data, and construct a theoretical ultrasonic simulation model of the organizational structure of the target anesthesia operation area of the target patient at the non-punctured stage.

[0012] Optionally, it further includes: During the process of practicing different puncture approaches for the target patient, simulate the force change of the puncture needle entering different tissue types through a magnetic field, so as to provide the operator with a simulation process feeling similar to that of real tissue.

[0013] In a second aspect, the present invention also proposes a nerve block simulation training device, including: A modeling unit, configured to construct ultrasonic simulation models of different human tissue parts based on standard three-dimensional anatomical structure information and simulated ultrasonic information of different human tissue parts, and associate the ultrasonic simulation models of different tissue parts with a tissue simulator through coordinate information; An ultrasonic image simulation unit, configured to track the relative position information and relative angle information between the simulated ultrasonic probe and the tissue simulator, and generate a corresponding simulated ultrasonic image through the ultrasonic simulation model; A puncture needle simulation unit, configured to track the position information and angle information of the simulated nerve block puncture needle in the tissue simulator, take the intersection of the coordinate range of the puncture needle and the coordinate range of the simulated ultrasonic probe section, and point-to-point transform it into a simulated puncture needle ultrasonic image.

[0014] In a third aspect, an electronic device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program stored in the memory, it implements the steps of the nerve block simulation training method according to any one of the first aspects described above.

[0015] In a fourth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the nerve block simulation training method according to any one of the first aspect is implemented.

[0016] In summary, for the nerve block simulation training method proposed in this application, by constructing ultrasound simulation models of different human tissue parts based on the standard three-dimensional anatomical structure information and simulated ultrasound information of different human tissue parts, different tissue part ultrasound simulation models are associated with the tissue simulator through coordinate information; the relative position information and relative angle information between the simulated ultrasound probe and the tissue simulator are tracked, and corresponding simulated ultrasound images are generated through the ultrasound simulation model; the position information and angle information of the simulated nerve block puncture needle in the tissue simulator are tracked, and the coordinate range of the puncture needle and the coordinate range of the cross-section of the simulated ultrasound probe are intersected to obtain the coplanar coordinate range of the puncture needle and the cross-section of the simulated ultrasound probe, and point-to-point conversion is performed to obtain the simulated puncture needle ultrasound image. By combining technologies such as virtual simulation, real-time feedback, and physical simulation, the nerve block teaching and training are innovatively separated from actual ultrasound imaging, enabling the operator to practice nerve block at multiple sites according to actual teaching purposes without being restricted by time, resources, or patient conditions. The operation is simple and cost-saving. At the same time, based on providing a visual experience of nerve block under simulated ultrasound guidance through virtual imaging, the present invention adds an actual tissue simulator and a nerve block needle to provide an actual operation experience, which can train the coordinated cooperation between the ultrasound probe and the nerve block needle and conduct training on puncture needle positioning and puncture approach.

[0017] For the nerve block simulation training method of the present invention, other advantages, objectives, and features of the present invention will be partially reflected by the following description, and partially will be understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to limit this specification. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings: Figure 1 It is a schematic flowchart of a nerve block simulation training method provided by an embodiment of the present application; Figure 2 It is a schematic structural diagram of a nerve block simulation training device provided by an embodiment of the present application; Figure 3 It is a schematic structural diagram of a nerve block simulation training electronic device provided by an embodiment of the present application; Figure 4Schematic diagram of an application scenario of a nerve block simulation training method provided by an embodiment of the present application. Detailed implementation manners

[0019] Terms such as "first", "second", "third", "fourth", etc. (if any) in the specification, claims and the above-mentioned drawings of the present application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances, so that the embodiments described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily limit to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices. The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.

[0020] In order to solve the problems that the simulation puncture sites are limited, the clinical situation cannot be truly simulated, which greatly reduces the efficiency of the transformation from simulation teaching to clinical practice, and there is also a lack of application value in clinical actual cases. However, ultrasound-guided nerve block requires excellent hand-eye coordination and spatial awareness to keep the needle in the ultrasound beam path, and beginners need to continuously learn and practice more. Please refer to Figure 1 , which is a schematic flowchart of a nerve block simulation training method provided by an embodiment of the present application, and specifically may include: steps S110 to S130.

[0021] S110, constructing an ultrasound simulation model of different tissue parts of the human body based on the standard three-dimensional anatomical structure information and simulated ultrasound information of different tissue parts of the human body, and associating the ultrasound simulation models of different tissue parts with the tissue simulator through coordinate information.

[0022] S120, tracking the relative position information and relative angle information between the simulated ultrasound probe and the tissue simulator, and generating a corresponding simulated ultrasound image through the ultrasound simulation model.

[0023] S130, tracking the position information and angle information of the simulated nerve block puncture needle in the tissue simulator, taking the intersection of the coordinate range of the puncture needle and the coordinate range of the simulated ultrasound probe section to obtain the coplanar coordinate range of the puncture needle and the simulated ultrasound probe section, and point-to-point converting it into a simulated puncture needle ultrasound image.

[0024] It is understandable that the analog ultrasonic probe is connected to the computer host system and receives the analog ultrasonic information coordinate system from the computer system. At the same time, a tracker is carried in the analog ultrasonic probe to monitor the position and placement angle of the probe in real time, and the coordinate information of the scanning surface of the analog ultrasonic probe is sent to the computer system in real time.

[0025] The nerve block needle is used to perform an analog nerve block operation in the state of being held by the operator. Similarly, the nerve block needle also carries a tracker (not shown) to monitor the position and angle of the nerve block needle in real time, and the coordinate information of the needle body and the needle tip is sent to the computer system in real time.

[0026] The tissue simulator is a human tissue simulation and recoverable raw material, which is used in combination with the nerve block needle to provide the operator with a realistic puncture experience. Retractable brackets are provided on both sides of the tissue simulator and fixed to the base. The two brackets are connected to the tissue simulator through a horizontal rotating shaft, and mechanical knobs are provided at the ends on both sides of the horizontal rotating shaft to control the rotation angle for adjusting the angle of the tissue simulator.

[0027] The three-dimensional anatomical structure refers to a virtual model three-dimensionally reconstructed in the computer host system based on the CT and MRI imaging data of the standard model or the actual clinical patient. This model is presented in real time on the interface of the display screen of the computer host system. The analog ultrasonic information coordinate system is based on the CT and MRI imaging data of the standard model or the actual clinical patient. With the target area as the center, a spatial reference coordinate system is constructed, and the ultrasonic imaging information of the corresponding coordinate points is simulated according to different parameters in the imaging data. This information is transmitted to the analog ultrasonic probe, so that the ultrasonic image can be completely simulated without using ultrasonic.

[0028] For example, the appearance of the analog ultrasonic probe can adopt the conventional shapes in the art, including linear, convex and array, and can be changed according to the actual situation. During the process of performing an analog ultrasonic-guided nerve block in the state of being held by the user, the analog ultrasonic probe can change its position and angle relative to the tissue simulator. The tracker will track and obtain the position and angle information of the analog ultrasonic probe, and send the obtained position and angle information of the analog ultrasonic probe to the computer host system in real time, so that the computer host system can obtain the scanning section coordinate system of the analog ultrasonic probe based on the position and angle information of the analog ultrasonic probe, and finally display the analog ultrasonic section image on the display screen of the computer host system.

[0029] Exemplarily, in the embodiments of the present application, the tracker may include a camera, an optical motion capture system disposed on the simulated ultrasound probe, and an inertial sensor disposed on the nerve block needle, for tracking and obtaining the spatial position information of the simulated ultrasound probe and the nerve block needle. By installing reflection markers or sensors on the simulated ultrasound probe and using a plurality of high-speed cameras or a camera array to track the position and angle of the markers in real time, the system captures the spatial coordinates of the markers, and then determines the position and orientation of the virtual probe, and sends the coordinate information of the cross-section of the simulated ultrasound probe to the computer host system in real time. By installing the inertial sensor on the nerve block needle, especially at the tip of the needle, the movement trajectory of the nerve block needle can be directly obtained, and the needle path and the tip coordinate information of the nerve block needle are sent to the computer host system in real time.

[0030] Exemplarily, in the examples of the present application, the tissue simulator may adopt conventional human tissue simulation and recoverable materials in the art, including materials such as silicone, polyurethane, and natural rubber, so as to be as similar as possible to the actual human tissue, especially to simulate the characteristics of different tissues such as blood vessels, nerves, muscles, and fat. At the same time, when the tissue is punctured or damaged, the material should be able to return to its original state. In addition, these simulation materials can provide a tactile sensation similar to that of real tissue, increasing the realism of the simulation process.

[0031] In summary, the nerve block simulation training method provided by the embodiments of the present application constructs ultrasound simulation models of different human tissue parts based on the standard three-dimensional anatomical structure information and simulated ultrasound information of different human tissue parts, and associates the ultrasound simulation models of different tissue parts with the tissue simulator through coordinate information; tracks the relative position information and relative angle information of the simulated ultrasound probe and the tissue simulator, and generates corresponding simulated ultrasound images through the ultrasound simulation model; tracks the position information and angle information of the simulated nerve block puncture needle in the tissue simulator, takes the intersection of the coordinate range of the puncture needle and the coordinate range of the cross-section of the simulated ultrasound probe, and obtains the coplanar coordinate range of the puncture needle and the cross-section of the simulated ultrasound probe, and converts it point by point into a simulated puncture needle ultrasound image. By combining technologies such as virtual simulation, real-time feedback, and physical simulation, it innovatively enables nerve block teaching and training to be separated from actual ultrasound imaging, allowing the operator to practice nerve block at multiple sites according to actual teaching purposes without being restricted by time, resources, or patient conditions, with simple operation and cost savings. At the same time, on the basis of providing a visual experience of nerve block under simulated ultrasound guidance through virtual imaging, the present invention adds an actual tissue simulator and a nerve block needle to provide an actual operation experience, and can train the coordinated cooperation between the ultrasound probe and the nerve block needle for training on puncture needle positioning and puncture approach.

[0032] According to some embodiments, it further includes: Obtaining the pressure intensity information of the simulated ultrasound probe; Generate a usage trigger feedback signal based on the relative position information, relative angle information, and the pressure intensity information of the tracking simulation ultrasound probe and the tissue simulator. The usage trigger feedback signal is used to change the simulated ultrasound cross-sectional image in the simulated ultrasound information to indicate tissue deformation and / or change in blood vessel visibility.

[0033] It can be understood that based on the real-time recording of the position and angle information of the simulation ultrasound probe by the tracker, the computer host system can obtain the coordinate range of the cross-sectional area of the simulation ultrasound probe, and convert the simulated ultrasound information point by point into a simulated ultrasound image, which is presented on the interface two of the computer host system to simulate the visual experience of actual ultrasound use.

[0034] Exemplarily, the simulated ultrasound image will, according to the usage trigger feedback signal of the simulation ultrasound probe and based on the pressure sensor information of the simulation ultrasound probe, when the pressure exceeds a certain limit, the computer host system will change the simulated ultrasound information in real time, and deformation or blood vessel changes will appear in the simulated ultrasound cross-sectional image. Taking the popliteal sciatic nerve block as an example, when the simulation ultrasound probe is placed in the correct position, the pulsation of the popliteal artery and the popliteal vein can be seen on the interface two of the computer host system. If during the simulation scan, the operator presses the simulation ultrasound probe with a force exceeding a certain limit, the popliteal vein can be flattened or even disappear.

[0035] In some examples, it further includes: Generate puncture scenario information based on the simulated patient condition; Adjust the pose of the tissue simulator based on the puncture scenario information.

[0036] Exemplarily, telescopic brackets are provided on both sides of the tissue simulator and fixed to the base. The brackets adopt a slide rail structure or a locking device to accurately adjust the length of the brackets, adjust the height or position of the simulator, and make it adapt to different training scenarios. At the same time, the slide rail and the locking device have smooth telescopic properties and can stably fix the simulator at the required position. The telescopic brackets can be made of aluminum alloy or stainless steel. These materials are light and durable, and have strong corrosion resistance, suitable for long-term use. The brackets on both sides are connected to the tissue simulator through a horizontal rotating shaft to adjust the rotation angle of the tissue simulator, so as to simulate different puncture angles or adjust to different puncture planes (such as horizontal plane, vertical plane, etc.). The rotating shaft and related connecting parts can be made of stainless steel or aluminum alloy. These metal materials have high strength, corrosion resistance and can provide stable rotation performance. The bearings can be ceramic bearings or ball bearings to reduce friction and ensure stability during long-term use. Mechanical knobs are provided at both ends of the horizontal rotating shaft to control the rotation angle and adjust the angle of the tissue simulator. The knobs can be made of ABS plastic or aluminum alloy, and conform to ergonomics, facilitating hand-held operation and providing sufficient rotational resistance to prevent accidental rotation during adjustment. At the same time, the knobs can be connected to the rotating shaft through a gear or screw mechanism to provide precise angle control. In addition, digital scales or rulers are set on the knobs to help users quickly locate the angle. To ensure that the tissue simulator can be stably fixed at the required position after adjusting the angle, a fixing device can also be adopted. The fixing part can be made of silicone gasket or rubber pad to avoid damaging the surface of the simulator and increase friction at the same time, so that the simulator is stably fixed on the bracket. Through the fixing device, it is ensured that the tissue simulator remains stable after adjusting the angle and avoids deviation or loosening during the training process.

[0037] Exemplarily, according to the training objective, the operator can select the training target area in the preset section of the computer host system and present a three-dimensional anatomical diagram of this part on Interface 1 of the display screen of the computer host system. The preset section includes but is not limited to cervical plexus, brachial plexus, radial nerve, ulnar nerve, median nerve, lumbar plexus, femoral nerve, lateral femoral cutaneous nerve, sciatic nerve, saphenous nerve, peroneal nerve, scalp nerve, paravertebral nerve of thoracic vertebra, intercostal nerve, stellate ganglion, etc.

[0038] Exemplarily, an appropriate puncture approach can be selected according to the simulation scenario and tissue site, and the angle of the tissue simulator can be adjusted.

[0039] Taking paravertebral nerve block, which is commonly used in chest or abdominal surgeries (such as thoracoscopic surgery, pain management for rib fractures, etc.) as an example, in order to facilitate the trainer to simulate the real scenario, the horizontal rotating shaft and the telescopic bracket are used to set the operation surface of the tissue simulator to face the operator directly, so as to simulate the lateral decubitus position of the patient, which is convenient for simulating puncture operations from the patient's back.

[0040] Exemplarily, the operator establishes a coordinate system at the zero adjustment point of the block simulator by using a simulated ultrasound probe, and corresponds the simulated ultrasound information coordinate system with the tissue simulator.

[0041] It can be understood that after the training target area is selected, the simulated ultrasound probe is in the interrogation zero adjustment state. At the same time, the placement method of the simulated ultrasound probe (parallel to the operator's shoulder or perpendicular to the operator's shoulder) will be displayed on the display screen of the computer host system. After the operator adjusts the position and angle of the tissue simulator, according to the prompt on the display screen, the ultrasonic simulation probe is vertically placed on the zero adjustment point of the tissue simulator, and the zero point is confirmed through the computer host system, and the simulated ultrasound information coordinate system of the target area is corresponded with the tissue simulator.

[0042] Exemplarily, the operator changes the position and angle of the ultrasound probe, and the simulated ultrasound image of the cross-section of the simulated ultrasound probe is displayed in real time in Interface II of the display screen of the computer host system.

[0043] Exemplarily, the operator selects a suitable puncture approach by operating the simulated puncture needle to complete the puncture operation.

[0044] It can be understood that based on the real-time recording of the position and angle information of the nerve block needle by the tracker, the computer host system can obtain the needle path and the tip coordinate range of the nerve block needle. The computer host system takes the intersection of the coordinate range of the puncture needle and the coordinate range of the cross-section of the simulated ultrasound probe to obtain the coplanar coordinate range of the puncture needle and the cross-section of the simulated ultrasound probe, and point-to-point conversion is made into the simulated puncture needle ultrasound image, which is presented in Interface II of the computer host system to simulate the visual experience of the actual nerve block operation.

[0045] In some examples, it further includes: Automatically record the time from when the simulated operator pierces the tissue simulator with the needle tip to the successful block; Evaluate the operation of the simulated operator according to the coplanarity degree and time between the cross-section of the simulated ultrasound probe and the nerve block needle, and the total time for the needle tip to approach the target nerve.

[0046] It can be understood that after the simulated injection is completed, the entire operation process is evaluated and displayed on the computer display screen. The evaluation content includes operation time, needle imaging score, block effect and learning curve.

[0047] Exemplarily, the computer host system automatically records the time from when the operator punctures the tissue simulator with the needle tip to the successful block. The criteria for the computer to determine a successful block are as follows: within 3 minutes, the needle tip approaches the target nerve and the total holding time reaches 80% of the preset time, while not touching the blood vessel area. At the same time, a needle imaging score is given according to the coplanarity degree and time between the simulated ultrasound probe section and the nerve block needle. The total time for the needle tip to approach the target nerve is used to evaluate the block effect. The operation process of the operator is recorded and analyzed by the camera, and an optimization space for the operation is given according to the displacement information of the operator's hand. After multiple operations, several different operations can be selected to construct a learning curve and analyze the learning status.

[0048] In some examples, it further includes: Collecting the CT and / or MRI image data sets of the organizational structure in the non-punctured stage of the target anesthesia operation area of the target patient; Performing three-dimensional reconstruction based on the CT and / or MRI image data sets of the organizational structure to construct a three-dimensional image of the organizational structure in the target anesthesia operation area; Simulating and converting the CT and / or MRI images into ultrasonic image signals, setting the target blocked nerve or area, and constructing a theoretical ultrasonic simulation model of the organizational structure in the non-punctured stage of the target anesthesia operation area of the target patient, so as to practice and comprehensively analyze different puncture approaches for the target patient and select an ultrasonic-guided nerve block plan.

[0049] It can be understood that the CT and MRI scan data of the target area are obtained to ensure that the image quality is clear enough and covers the detailed images of the target anesthesia area. At the same time, ensure that the image data has no loss and there are no significant artifacts or noises. If the data quality is low, the image quality can be improved through denoising or enhancement processing. Import the patient's image data into the computer host system. The system performs operations such as denoising and enhancement on the CT image of the target anesthesia operation area of the patient to optimize the target area and generate an optimized CT image of the patient's target area; perform soft tissue resolution on the MRI image of the target anesthesia operation area of the patient to generate an image of the soft tissue area of the MRI image; merge the optimized CT image and the image of the soft tissue area of the MRI image to generate a three-dimensional image of the tissue characteristics of the patient's target area. Finally, the system automatically or manually marks the target anesthesia area and provides three-dimensional models of specific anatomical areas (such as blood vessels, bones, nerves). The operator uses the above-mentioned virtual-real combined simulation training system and method for nerve block, based on the simulated ultrasonic image signals of actual clinical patients, combined with a tissue simulator that can be changed at multiple angles, to practice and comprehensively analyze different puncture approaches and select the most suitable ultrasonic-guided nerve block plan.

[0050] In some examples, the simulation based on CT and / or MRI images is transformed into an ultrasonic image signal, a target blocked nerve or area is set, and a theoretical ultrasonic simulation model of the organizational structure in the non-punctured stage of the target anesthetic operation area of the target patient is constructed, including: Perform tissue segmentation on the CT and / or MRI imaging data set and correspond to the actual tissue, so as to extract and analyze its acoustic characteristics; By constructing a three-dimensional coordinate system, the three-dimensionally reconstructed CT and / or MRI imaging data are point-to-point transformed into ultrasonic imaging data, and a theoretical ultrasonic simulation model of the organizational structure in the non-punctured stage of the target anesthetic operation area of the target patient is constructed.

[0051] It can be understood that the tissue segmentation method can adopt the following mainstream methods: 1. Threshold segmentation: Use the gray threshold to perform tissue segmentation on the CT / MRI image. Different tissues (such as bone, muscle, fat, nerve, etc.) have different densities and gray values, so different tissue regions can be extracted by setting thresholds. 2. Region-based segmentation: For example, use algorithms such as region growing and level set for automatic segmentation of different tissue regions. 3. Multi-level segmentation: The echo characteristics of different tissues vary greatly, and different thresholds or segmentation strategies may be required to accurately segment and label different tissues, such as blood vessels, bones, nerves, etc. Transform the two-dimensional slice data of the CT / MRI image into three-dimensional data and construct a three-dimensional space coordinate system. Each tissue region is calibrated as a three-dimensional voxel (volume pixel), and within this space, each voxel can be described by attributes such as coordinate position, density value, and echo intensity. The CT, MRI, and ultrasonic imaging data take the center of the target area as the origin, and for each tissue point, the density value in the CT / MRI image is transformed into the echo intensity through a specific mapping method in the three-dimensional coordinate system. This process will perform mapping according to the acoustic characteristics of the tissue and match the echo signal of ultrasonic imaging.

[0052] Thus, by converting CT and MRI image data into ultrasound image signals, a simulation effect close to real ultrasound images can be provided, enabling the operator to perform multi-site nerve block practice according to actual teaching purposes without being restricted by time, resources, or patient conditions. A personalized and customized training environment can be provided. By using the CT or MRI image data of patients, personalized training models can be customized for different patients with different anatomical characteristics. By setting tissue simulators at different angles, multiple puncture approaches (such as vertical, horizontal, or inclined planes, etc.) can be simulated. This flexibility provides a wider range of training scenarios for the operator, enabling them to comprehensively improve their operating skills and handle more complex puncture scenarios. Through multi-modal image integration and optimization, virtual-real combined simulation training is achieved. By combining CT or MRI images with ultrasound images, more comprehensive anatomical information can be provided for the operator. CT and MRI provide static and detailed anatomical information, while the simulated ultrasound images provide dynamic real-time feedback. The combination of the two can comprehensively present the anatomical structure of the target area and its relative position. At the same time, the tissue simulator and the nerve block needle can provide the operator with a real operating experience, enhancing the training effect. Data recording and tracking can be achieved, and personalized feedback and evaluation can be provided. During the training process, the system can record the operator's operation data, including key parameters such as puncture angle, depth, and path. These data can be used for subsequent teaching evaluation, skill tracking, and improvement. The operator can understand the advantages and disadvantages of their operations through the analysis reports provided by the system and conduct targeted practice based on the feedback. This personalized learning and feedback mechanism can significantly improve the training effect.

[0053] In some examples, it further includes: During the process of practicing different puncture approaches on the target patient, the force change of the puncture needle entering different tissue types is simulated by a magnetic field to provide the operator with a simulated process feeling similar to that of real tissues.

[0054] It can be understood that in a virtual-reality combined nerve block training system, in addition to using a physical tissue simulator, the force changes when a puncture needle enters different tissue types can also be simulated using a magnetic field. This method is based on magnetic damping, magnetic force control, and an intelligent feedback mechanism to reproduce the different mechanical resistances of different anatomical tissues (such as skin, fat, muscle, nerve, blood vessels, etc.) on the puncture needle in a virtual training environment, thereby providing a tactile feedback closer to real puncture operations. The resistance of the puncture needle can be adjusted through an electromagnetic field to match the physical properties of different tissues. When the puncture needle enters different tissues, its movement is regulated in real time by the magnetic field force to simulate the resistance and feedback feeling of actual tissues. Different tissues (such as fat, muscle, nerve, bone, etc.) have different elasticities and resistances, and the puncture feeling can be simulated by adjusting the magnetic field strength. The system uses real-time sensors to detect the position and force feedback of the puncture needle and adjusts the magnetic field according to different tissue types to provide real-time tactile feedback.

[0055] Exemplarily, a computer host system can be used to store patient CT / MRI data, establish a three-dimensional anatomical model, and simulate ultrasound images in real time during the puncture practice. Calculate the mechanical properties of tissues and dynamically control magnetic field feedback. The magnetic feedback puncture needle can be made of a magnetizable alloy material (such as iron-nickel alloy) and can be controlled by a magnetic field. The sensor array (strain gauges, accelerometers, etc.) measures the force changes during the puncture process in real time. The electromagnetic field generator can be composed of a coil array or an electromagnet and is arranged around the training area to provide a variable magnetic field. By adjusting the magnitude and direction of the current in real time, the magnetic field strength is changed, thereby affecting the movement resistance of the puncture needle. The force feedback calculation module can calculate the position, angle, and speed of the puncture needle and adjust the magnetic field strength in real time. Combine the physical parameters (density, elasticity, viscosity) of the tissue to generate accurate force feedback. And use the user interface to display the virtual ultrasound image and the real-time trajectory of the puncture needle. An actual operation experience can also be provided through a force feedback device (such as a handle with tactile feedback).

[0056] Exemplarily, through the patient's CT / MRI data, the organizational structures of the target region are extracted, and the densities and elasticities of different tissues are analyzed. According to the biomechanical parameters, the puncture resistances of different tissues are calculated. The finite element analysis method can be used to simulate the mechanical changes of the needle entering different tissues. The target nerve region is selected, and different puncture approaches are set in the virtual system. The optimal paths of each approach are calculated, and a visualization interface under ultrasound guidance is provided. When the operator advances the puncture needle, the system adjusts the magnetic field intensity according to the position of the needle and the tissue type. For example, when entering the skin layer, the magnetic field generates a brief high resistance (simulating the sudden feeling during skin puncture). When passing through the adipose tissue, the resistance decreases, providing a low friction feeling. When entering the muscle layer, the resistance increases, and there is a slight viscous feeling (simulating the structure of muscle fibers). When approaching the nerve tissue, the system increases the vibration feedback to remind the operator to avoid damaging the nerve. If the needle touches a blood vessel, the system can generate a lateral offset force through the magnetic field to simulate the blood vessel rebound effect. The computer records the puncture trajectory, operation time, and force feedback data and provides a score. The operator can replay the puncture process and optimize the technique. Thus, traditional tissue simulators are difficult to accurately simulate the resistance changes of different anatomical tissues, while the magnetic field feedback technology can dynamically adjust the force feedback to make the puncture operation more realistic. For example, by using a multi-layer resistance curve of skin - adipose - muscle - nerve - blood vessel, the puncture process of real human tissues can be simulated. This solution can be combined with ultrasound guidance for training, enabling the operator to observe the puncture path in the virtual ultrasound image while feeling the real puncture force feedback. Since this system can create a personalized anatomical model based on the patient's actual CT / MRI images, the puncture path and force feedback can be adjusted according to the anatomical characteristics of different patients. For example, for a thin patient with a thin subcutaneous fat layer, the magnetic field resistance curve is adjusted to a steeper gradient. For an obese patient with a thicker fat layer, the change in puncture resistance is slower. This system supports puncture practice at different angles, such as in-plane and out-of-plane punctures, and can provide corresponding changes in force feedback. For example, for a spinal ganglion block that requires a large-angle oblique needle insertion, this system can simulate the contact between the needle tip and the bone by adjusting the magnetic field to guide the operator to adjust the puncture angle.

[0057] Taking femoral nerve block as an example, the target tissues are, in sequence: skin, subcutaneous fat, broad fascia, iliac fascia, and femoral nerve. The force feedback can include the following stages: skin layer, high resistance, instant penetration feeling; fat layer, low resistance, easy advancement; broad fascia and iliac fascia, medium resistance, accompanied by a small amount of vibration feedback (simulating the fascia structure); femoral nerve, reduced resistance, but with a slight increase in vibration (reminding the operator to avoid piercing the nerve).

[0058] Please refer to Figure 2 , an embodiment of the nerve block simulation training device in the embodiment of the present application may include: A modeling unit 21 for constructing ultrasonic simulation models of different tissue parts of the human body based on standard three-dimensional anatomical structure information and simulated ultrasonic information of different tissue parts of the human body, and associating the ultrasonic simulation models of different tissue parts with the tissue simulator through coordinate information; An ultrasonic image simulation unit 22 for tracking the relative position information and relative angle information between the simulated ultrasonic probe and the tissue simulator, and generating corresponding simulated ultrasonic images through the ultrasonic simulation model; A puncture needle simulation unit 23 for tracking the position information and angle information of the simulated nerve block puncture needle in the tissue simulator, taking the intersection of the coordinate range of the puncture needle and the coordinate range of the cross-section of the simulated ultrasonic probe to obtain the coplanar coordinate range of the puncture needle and the cross-section of the simulated ultrasonic probe, and converting it point by point into a simulated puncture needle ultrasonic image.

[0059] In summary, the nerve block simulation training device provided by the embodiment of the present application constructs ultrasonic simulation models of different tissue parts of the human body based on standard three-dimensional anatomical structure information and simulated ultrasonic information of different tissue parts of the human body, and associates the ultrasonic simulation models of different tissue parts with the tissue simulator through coordinate information; tracks the relative position information and relative angle information between the simulated ultrasonic probe and the tissue simulator, and generates corresponding simulated ultrasonic images through the ultrasonic simulation model; tracks the position information and angle information of the simulated nerve block puncture needle in the tissue simulator, takes the intersection of the coordinate range of the puncture needle and the coordinate range of the cross-section of the simulated ultrasonic probe to obtain the coplanar coordinate range of the puncture needle and the cross-section of the simulated ultrasonic probe, and converts it point by point into a simulated puncture needle ultrasonic image. By combining technologies such as virtual simulation, real-time feedback, and physical simulation, it innovatively enables nerve block teaching and training to be separated from actual ultrasonic imaging, allowing operators to be unrestricted by time, resources, or patient conditions, and perform multi-site nerve block exercises according to actual teaching purposes, with simple operation and cost savings. At the same time, based on providing a visual experience of nerve block under simulated ultrasonic guidance through virtual imaging, the present invention adds an actual tissue simulator and a nerve block needle to provide an actual operation experience, and can train the coordinated cooperation between the ultrasonic probe and the nerve block needle for training on puncture needle positioning and puncture approach.

[0060] As Figure 3 shown, the embodiment of the present application also provides an electronic device 300, including a memory 310, a processor 320, and a computer program 311 stored on the memory 310 and executable on the processor. When the processor 320 executes the computer program 311, it implements the steps of any of the above methods for nerve block simulation training: Constructing ultrasonic simulation models of different tissue parts of the human body based on standard three-dimensional anatomical structure information and simulated ultrasonic information of different tissue parts of the human body, and associating the ultrasonic simulation models of different tissue parts with the tissue simulator through coordinate information; Track the relative position information and relative angle information between the simulated ultrasound probe and the tissue simulator, and generate a corresponding simulated ultrasound image through the ultrasound simulation model; Track the position information and angle information of the simulated nerve block puncture needle in the tissue simulator, take the intersection of the coordinate range of the puncture needle and the coordinate range of the simulated ultrasound probe section, and obtain the coplanar coordinate range of the puncture needle and the simulated ultrasound probe section, and convert it point by point into a simulated puncture needle ultrasound image.

[0061] Since the electronic device introduced in this embodiment is the device used in a nerve block simulation training device in an embodiment of the present application, based on the method introduced in the embodiment of the present application, those skilled in the art can understand the specific implementation manner and various variations of the electronic device in this embodiment. Therefore, the specific implementation of how this electronic device implements the method in the embodiment of the present application will not be described in detail here. As long as the device used by those skilled in the art to implement the method in the embodiment of the present application belongs to the scope protected by the present application.

[0062] In the specific implementation process, when the computer program 311 is executed by the processor, it can implement Figure 1 Any one of the corresponding embodiments: Construct an ultrasound simulation model of different tissue parts of the human body based on the standard three-dimensional anatomical structure information and simulated ultrasound information of different tissue parts of the human body, and associate the ultrasound simulation models of different tissue parts with the tissue simulator through coordinate information; Track the relative position information and relative angle information between the simulated ultrasound probe and the tissue simulator, and generate a corresponding simulated ultrasound image through the ultrasound simulation model; Track the position information and angle information of the simulated nerve block puncture needle in the tissue simulator, take the intersection of the coordinate range of the puncture needle and the coordinate range of the simulated ultrasound probe section, and obtain the coplanar coordinate range of the puncture needle and the simulated ultrasound probe section, and convert it point by point into a simulated puncture needle ultrasound image.

[0063] As Figure 4 shown, in the application scenario of the above solution, the hardware for real operation may include a simulated probe 410, a simulated nerve puncture needle 420, a tissue simulator 430, and an external adjustment bracket 440, through a "signal sensing converter". The virtual display software displays the ultrasound image in real time for operation evaluation.

[0064] The execution process of the method may include: 1. The tissue simulator is associated with an ultrasonic model of the corresponding part; 2. Simulate the probe scanning, and obtain real-time ultrasonic images through "signal perception"; 3. Simulate the puncture of the puncture needle, and the needle imaging appears in the ultrasonic image through "signal perception"; 4. The external adjustment bracket can adjust the tissue simulator to different positions to simulate the supine, lateral, and prone positions in clinical practice.

[0065] It should be noted that in the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0066] Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0067] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of the processes and / or blocks in the flowchart and / or block diagram can also be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for realizing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0068] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device realizes the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0069] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process. Therefore, the instructions executed on the computer or other programmable device provide for realizing the functions in the process Figure 1One or more processes and / or boxes Figure 1 Steps of the functions specified in one box or multiple boxes.

[0070] The embodiments of the present application also provide a computer program product, which includes computer software instructions. When the computer software instructions run on a processing device, the processing device is caused to execute the process of nerve block simulation training in the corresponding embodiment, such as Figure 1 The process of nerve block simulation training in the corresponding embodiment.

[0071] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center in a wired manner (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or a wireless manner (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server or a data center that includes one or more integrated available media. The available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)), etc.

[0072] Those skilled in the art can clearly understand that for the convenience and conciseness of description, the specific working processes of the above-described systems, devices, and units can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein.

[0073] In several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Another point is that the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in an electrical, mechanical, or other form.

[0074] The unit described as a separation component may or may not be physically separated. The component shown as a unit may or may not be a physical unit, that is, it may be located in one place or distributed across multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0075] In addition, each functional unit in various embodiments of the present application can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0076] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in various embodiments of the present application. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs that can store program codes.

[0077] The above embodiments are only used to illustrate the technical solution of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of various embodiments of the present application.

Claims

1. A nerve block simulation training method, characterized in that, Comprising: Constructing an ultrasound simulation model of different human tissue parts based on the standard three-dimensional anatomical structure information and simulated ultrasound information of different human tissue parts, and associating the ultrasound simulation models of different tissue parts with the tissue simulator through coordinate information; Tracking the relative position information and relative angle information between the simulated ultrasound probe and the tissue simulator, and generating a corresponding simulated ultrasound image through the ultrasound simulation model; Tracking the position information and angle information of the simulated nerve block puncture needle in the tissue simulator, taking the intersection of the coordinate range of the puncture needle and the coordinate range of the simulated ultrasound probe section to obtain the coplanar coordinate range of the puncture needle and the simulated ultrasound probe section, and point-to-point converting it into a simulated puncture needle ultrasound image.

2. The method according to claim 1, wherein Further comprising: Obtaining the pressure intensity information of the simulated ultrasound probe; Generating a usage trigger feedback signal based on the tracked relative position information, relative angle information between the simulated ultrasound probe and the tissue simulator, and the pressure intensity information, and the usage trigger feedback signal is used to change the simulated ultrasound section image in the simulated ultrasound information to indicate tissue deformation and / or blood vessel visibility change.

3. The method according to claim 1, characterized in that, Further comprising: Generating puncture scenario information based on the simulated patient's condition; Adjusting the pose of the tissue simulator based on the puncture scenario information.

4. The method according to claim 1, wherein Further comprising: Automatically recording the time from when the simulated operator punctures the tissue simulator with the needle tip to the success of the block; Evaluating the operation of the simulated operator according to the coplanarity degree and time between the simulated ultrasound probe section and the nerve block needle, and the total time when the needle tip approaches the target nerve.

5. The method according to claim 1, characterized in that, Further comprising: Collecting the CT and / or MRI image data sets of the organizational structure in the non-punctured stage of the target anesthesia operation area of the target patient; Performing three-dimensional reconstruction based on the CT and / or MRI image data sets of the organizational structure to construct a three-dimensional image of the organizational structure in the target anesthesia operation area; Simulating and converting the CT and / or MRI images into ultrasound image signals, setting the target blocked nerve or area, and constructing a theoretical ultrasound simulation model of the organizational structure in the non-punctured stage of the target anesthesia operation area of the target patient, so as to practice and comprehensively analyze different puncture approaches of the target patient and select an ultrasound-guided nerve block plan.

6. The method according to claim 5, characterized in that, The simulating and converting the CT and / or MRI images into ultrasound image signals, setting the target blocked nerve or area, and constructing the theoretical ultrasound simulation model of the organizational structure in the non-punctured stage of the target anesthesia operation area of the target patient includes: Performing tissue segmentation according to the CT and / or MRI imaging data sets and corresponding to the actual tissues, so as to extract and analyze their acoustic characteristics; By constructing a three-dimensional coordinate system, point-to-point converting the three-dimensionally reconstructed CT and / or MRI imaging data into ultrasound imaging data, and constructing a theoretical ultrasound simulation model of the organizational structure in the non-punctured stage of the target anesthesia operation area of the target patient.

7. The method according to claim 5 or 6, characterized in that Further comprising: During the process of practicing different puncture approaches for the target patient, simulating the force change of the puncture needle entering different tissue types through a magnetic field to provide the operator with a simulated process feeling similar to that of real tissues.

8. A nerve block simulation training device, characterized in that, Comprising: A modeling unit, configured to construct an ultrasound simulation model of different tissue parts of the human body based on the standard three-dimensional anatomical structure information and simulated ultrasound information of different tissue parts of the human body, and associate the ultrasound simulation models of different tissue parts with the tissue simulator through coordinate information; An ultrasound image simulation unit, configured to track the relative position information and relative angle information between the simulated ultrasound probe and the tissue simulator, and generate a corresponding simulated ultrasound image through the ultrasound simulation model; A puncture needle simulation unit, configured to track the position information and angle information of the simulated nerve block puncture needle in the tissue simulator, take the intersection of the coordinate range of the puncture needle and the coordinate range of the simulated ultrasound probe section plane to obtain the coplanar coordinate range of the puncture needle and the simulated ultrasound probe section plane, and convert it point by point into a simulated puncture needle ultrasound image.

9. An electronic device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor is configured to implement the steps of the nerve block simulation training method according to any one of claims 1-7 when executing the computer program stored in the memory.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The computer program, when executed by the processor, implements the nerve block simulation training method according to any one of claims 1-7.

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