Type A botulinum toxin injection teaching mold and use method thereof

Abstract

The invention discloses an A-type botulinum toxin injection teaching mold and a use method, and relates to the technical field of medical instruments, the A-type botulinum toxin injection teaching mold comprises a human body model, and further comprises a neck bionic assembly which is arranged at the neck position of the human body model and comprises at least one detachable bionic muscle strip; the action assembly is arranged at the head of the human body model and is used for driving the head and neck of the human body model to generate at least one posture of flexion and extension, torsion and heeling so as to activate the corresponding bionic muscle strips; and the control and display assembly is electrically connected with the neck bionic assembly and the action assembly. The flushing device effectively solves the problems that in teaching, free and dynamic movement of the head and the neck is difficult to restore, muscle group cooperation is difficult, injection point position prompting is not standard, assessment is difficult to quantify and the like, and a standardized integrated platform is provided for standardized teaching, visual training and objective assessment of related clinical skills.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical simulation teaching and rehabilitation training equipment, in particular to a type A botulinum toxin injection teaching mold and a use method. BACKGROUND

[0002] Cervical dystonia is a common neuromuscular movement disorder, and patients show involuntary rotation, lateral tilt or flexion and extension of the head and neck, which seriously affects the quality of life. The current first-line clinical treatment is type A botulinum toxin injection, and the efficacy is highly dependent on the anatomical knowledge of the surgeon on the multi-layer muscle groups of the neck, the judgment of the responsible muscles for different clinical phenotypes such as head rotation, lateral tilt, forward bending and backward extension, and the accurate selection of standardized injection points. If the point determination is incorrect or the layer is not properly grasped, it may not only have poor efficacy, but also cause adverse reactions such as difficulty swallowing, so there is an urgent need for objective and standardized training and assessment.

[0003] The existing training mainly relies on cadaver specimens, two-dimensional anatomical atlas or static simulation human models, but there are the following key problems in the comprehensive training of actions, muscle groups and points: cadaver specimens are scarce, have high maintenance costs, and cannot reproduce the dynamic neck kinematics and muscle group coordination of living bodies; two-dimensional atlas cannot express the hierarchical superposition of muscle groups in three-dimensional space and the "forbidden zone" of nerves and blood vessels; common static models can only show muscle positions, lack of linkage feedback between actions, muscle groups and points, and it is also difficult to form a quantifiable assessment closed loop, resulting in long learning period, high risk of real operation, and limited teaching efficiency. SUMMARY

[0004] In view of the above problems, the present application aims to provide a type A botulinum toxin injection teaching mold and a use method, which effectively solves the problems of difficulty in restoring head and neck free dynamic movement and muscle group coordination, non-standard injection point prompt, and difficulty in quantifying assessment, and provides a standardized integrated platform for standardized teaching, visual training and objective evaluation of related clinical skills.

[0005] The main idea of the technical scheme adopted by the present application is that a horizontal rotation unit and a spherical hinge elastic return mechanism are built in a human body model to realize multi-degree-of-freedom controllable movement of rotation around a vertical axis, forward flexion, backward extension and lateral inclination, and posture data is collected in real time by a gyroscope; a fast detachable bionic muscle strip which is modularized, layered and abstracted is used as a carrier for front, side and rear necks, a lamp strip and a color separation light point are embedded in the bionic muscle strip to form a "strip + point" superimposed prompt to intuitively distinguish correct injection points from common interference points; a control box, a display screen and a point selection terminal are used to form a double mode of practice and examination, a "phenotype - responsible muscle - point" rule base is built in, muscle strip combinations are automatically called according to the selected phenotype and are linked to adjust the light intensity of the bionic muscle strip and the state of the point; in the examination mode, all points are randomly numbered and the hit rate, the misselection rate and the reaction time are recorded, automatic scoring and report generation are realized; the overall structure supports quick replacement, easy maintenance and safety protection, and is suitable for standardized teaching, visual training and objective evaluation.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows: The A-type botulinum toxin injection teaching mold comprises a human body model, further comprises: a neck bionic assembly arranged at the neck position of the human body model, comprising at least one detachable bionic muscle strip corresponding to the target muscle of A-type botulinum toxin injection; a motion assembly arranged at the head of the human body model, used to drive the head and neck of the human body model to generate at least one posture of flexion, extension, torsion and lateral inclination to activate the corresponding bionic muscle strip; a control and display assembly electrically connected with the neck bionic assembly and the motion assembly.

[0007] Further, the bionic muscle strip is a strip-shaped light-transmitting elastic member shaped along the muscle fiber, and a wiring groove for accommodating the lamp strip and the wire is arranged inside.

[0008] Further, the target muscle of the bionic muscle strip is at least selected from three or more of the sternocleidomastoid muscle, the trapezius muscle, the levator scapulae muscle, the splenius capitis muscle, the semispinalis capitis muscle, the semispinalis cervicis muscle, the longest muscle of the head, the longest muscle of the neck, and the inferior oblique muscle of the head.

[0009] Further, the bionic muscle strip is a strip-shaped light-transmitting elastic member shaped along the muscle fiber, and a wiring groove for accommodating the lamp strip and the wire is arranged inside. Wherein, the light-emitting point at least includes a plurality of first light-emitting points for indicating correct injection points and a plurality of second light-emitting points for indicating incorrect interference points, and the two are distinguished by different color indicating lights.

[0010] Further, the motion assembly comprises: a horizontal rotation unit arranged inside the human body model; a measurement unit rotatably and elastically connected to the horizontal rotation unit.

[0011] Further, the horizontal rotation unit comprises: a support frame arranged inside the human body model; a rotating seat rotatably connected to the support frame, and the rotating axis of the rotating seat is arranged along the vertical direction of the human body model.

[0012] Furthermore, the measurement unit includes: a ball joint, rotatably connected to a rotating base; a gyroscope sensor, connected to the end of the ball joint away from the rotating base, for outputting head and neck posture data; and elastic elements, arranged around the circumference of the ball joint, at least two of which are provided, with one end elastically connected to the rotating base and the other end elastically connected to the gyroscope sensor.

[0013] Furthermore, the control and display components include: a control box, which is located on the periphery of the human body model and electrically connected to the gyroscope sensor and the light strip inside the bionic muscle strip; and a display screen, which is located on the control box and is used to display real-time data, status information and operation interface during the experiment.

[0014] Furthermore, it also includes a point selection terminal, which is electrically connected to the control box.

[0015] Another object of the present invention is to provide a method for using a type A botulinum toxin injection teaching mold, comprising the following steps: S1: Based on the clinical phenotype to be trained, select and assemble the corresponding bionic muscle strips in the anterior neck, lateral neck and posterior neck modules, and insert their proximal ends into the neck hub and electrically connect them to the control box. S2: Select practice mode or exam mode on the display screen; S201: In practice mode, the operator manually moves the head to the target posture, and the gyroscope transmits the posture angle to the control box. The control box automatically lights up the relevant bionic muscle strips according to the rule library and only lights up the first light point. The display screen synchronously displays the posture and activated muscle group information. S202: In the examination mode, in the center or default posture, the control box generates the current round of scoring set and randomly numbers all the light-emitting points; the subject selects and submits at the terminal, the control box determines the selected point as the first light-emitting point or the second light-emitting point and records the time taken, automatically scores according to the preset rules and outputs a report.

[0016] The beneficial effects of this invention are: 1. Dynamic restoration and modular reconstruction: The motion components enable multi-degree-of-freedom controllable movements such as rotation around the vertical axis, flexion, extension, and lateral tilt. Combined with quick-release layered bionic muscle strips for the front, sides, and back of the neck, training scenarios can be quickly reconstructed according to different phenotypes. It closely resembles clinical muscle group synergy and soft tissue constraints, improving the realism, repeatability, and classroom safety of demonstrations and exercises, and making maintenance more convenient.

[0017] 2. Standardized point visualization: The muscle strip has an embedded light strip to show the muscle direction, and the surface is set with color-coded light-emitting points to distinguish recommended injection points from interference points. Each point can be independently controlled and its brightness and rhythm can be linked with the posture to form a "strip + point" intuitive prompt; significantly reducing the error of layer and position, helping trainees to quickly establish the mapping from movement to muscle group to point, and improving positioning efficiency and accuracy.

[0018] 3. Objective evaluation closed loop: The control box and the point selection terminal constitute the examination mode. All points are randomly numbered and the hit rate, misselection rate, reaction time and posture trajectory are recorded. The system automatically scores according to the rule base and outputs individualized heat maps and reports. The data can be exported to support course management and continuous improvement, significantly reducing subjectivity and enhancing the comparability and traceability of the results. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Elevation view; Figure 3 This is a schematic diagram of the structure of the neck bionic component of the present invention; Figure 4 This is a structural schematic diagram of the neck bionic component of the present invention from another angle; Figure 5 This is a schematic diagram of the structure of the action component of the present invention; Figure 6 This is an exploded view of the structure of the horizontal rotation unit of the present invention; Figure 7 This is a schematic diagram of the structure of the horizontal rotation unit of the present invention; Figure 8 This is a cross-sectional view of the action component of the present invention; Figure 9 This is a schematic diagram of the structure of the biomimetic muscle strip of the present invention; The components include: 1. Human body model; 11. Protective components; 111. Protective cover; 112. Base; 2. Bionic neck components; 21. Bionic muscle strip; 211. Wiring channel; 212. Inferior oblique muscle of the head; 213. Sternocleidomastoid muscle; 214. Splenius capitis muscle; 215. Longissimus capitis muscle; 22. Point indicator components; 221. First light-emitting point; 222. Second light-emitting point; 3. Motion components; 31. Horizontal rotation unit; 311. Support frame; 312. Rotating seat; 32. Horizontal rotation unit; 321. Ball joint; 3211. Ball joint seat; 3212. Ball head rod end; 322. Gyroscope sensor; 323. Elastic element; 4. Control and display components; 41. Control box; 42. Display screen; 5. Point selection terminal; Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Example 1

[0021] See Figures 1-9 This application discloses a type A botulinum toxin injection teaching mold and its usage method, including a human body model 1. The human body model 1 includes a protective component 11 arranged around its periphery. The protective component 11 includes a protective cover 111 surrounding the human body model 1 and a base 112 disposed under the protective base. The protective cover 111 is preferably made of transparent plastic or acrylic material and is cylindrical in shape to prevent external collisions and accidental contact during teaching and experiments. The protective cover 111 is made of transparent PC material and has an integrally formed outward flange at its lower opening. The base 112 has a disc structure, and its upper surface is coaxially provided with an annular groove on the bottom surface of the protective cover 111. The flange and the base are clamped together by four circumferentially distributed quick-release knob screws, which ensures assembly strength and facilitates quick disassembly and assembly during teaching and maintenance.

[0022] Preferably, the human body model 1 includes a 1:1 replica of the head, ribs, and torso support components. The ribs are fixed to the base 112, and the head is connected to the base 112 via an action component 3. The action component 3 includes a horizontal rotation unit 31 disposed inside the human body model 1 and a measurement unit 32 connected thereto. The horizontal rotation unit 31 includes a support frame 311 and a rotating seat 312. The support frame 311 is integrally formed by a vertical rod and an upper bearing mounting seat. The lower end of the vertical rod is fixed to the center mounting position of the base 112 with screws, and the upper bearing mounting seat has an embedded bushing. The rotating seat 312 is a disc-shaped component with a journal coaxially disposed at its lower part. The journal is rotatably connected to the bearing mounting seat of the support frame 311 via a bushing. The rotation axis is arranged along the vertical direction of the human body model 1, and the measurement unit 32 is fixedly installed in the center of the upper surface of the rotating seat 312.

[0023] Preferably, the measuring unit 32 includes a ball joint 321, a gyroscope sensor 322, and an elastic element 323. Specifically, a ball joint seat is fixed at the center of the upper surface of the rotating seat 312. The ball joint seat 3211 is preferably a cup-shaped ball-and-socket structure with an upper opening. A spherical cavity matching the ball head of the ball joint is formed inside the cup. The ball head is rotatably installed inside the cup, which ensures both pitch and tilt rotation and moderate motion damping and stability.

[0024] Preferably, six lugs are evenly distributed around the outer periphery of the ball joint seat, serving as connection points between the elastic element 323 and the rotating seat 312. The ball joint 3212 is fixedly connected to the gyroscope sensor 322 via a sensor mounting base, allowing the gyroscope sensor to rotate synchronously with the head and neck movements to output attitude data. The elastic element 323 is preferably a symmetrically arranged tension spring or elastic band, circumferentially arranged around the ball joint 321. One end of the elastic element is elastically connected to the lug on the rotating seat 312, and the other end is elastically connected to the circumferential lug of the sensor mounting base, thereby generating a centering torque and limiting the limit angle after the ball joint deflects.

[0025] Preferably, the neck bionic component 2 is disposed at the neck position of the human body model 1, including at least one detachable bionic muscle strip 21; the bionic muscle strip 21 is strip-shaped and arranged along the direction of the target muscle fibers; the main body is a semi-transparent elastic material, preferably silicone or TPU, Shore A10–20, with a micro-frosted surface to simulate the feel and facilitate light diffusion.

[0026] Preferably, the bionic muscle strip 21 has a wiring groove 211 arranged longitudinally inside for embedding flexible light strips and wires; the opening of the wiring groove is covered with a removable light diffusion layer, such as a 0.3–0.5 mm milky white PC sheet or silicone coating, to achieve uniform light output and protect the wires.

[0027] Preferably, the bionic muscle strip 21 has quick-release connectors at both ends, one at the proximal end and one at the distal end, which connect to matching positioning points on bony references such as the skull, clavicle, sternum, and scapula via clips, magnets, or micro-screws, facilitating easy assembly and disassembly to adapt to different disease combinations. The proximal end of the bionic muscle strip 21 has a pre-embedded micro-connector, such as a 2-4 pin plug, which mates with the wiring harness at the base of the neck; to prevent pulling during movement, a ring-shaped allowance is provided at the base of the neck, and the coil is protected and stress-relieving.

[0028] Preferably, based on the "head-neck" classification and the selection of responsible muscles, at least three muscle strips are assembled. The bionic muscle strip 21 is set in three modules: the anterior neck module, the lateral neck module, and the posterior neck module. Due to the complexity of neck muscles, only the inferior oblique capitis muscle 212, the sternocleidomastoid muscle 213, the splenius capitis muscle 214, and the longissimus capitis muscle 215 are shown in this figure for illustration. The specific distribution of the others is shown in the table below.

[0029] The specific distribution is as follows: 1. Front neck module (2 layers) The outer layer is mainly composed of the sternocleidomastoid muscle; the inner layer is abstractly composed of strips in the pharyngeal region.

[0030] Table 1. Configuration of muscle strips in the anterior neck module 2. Side neck module, 2 layers

[0031] The outer layer consists of the upper trapezius muscle near the neck and the sternocleidomastoid muscle; the inner layer consists of the levator scapulae muscle and the middle scalene muscle.

[0032] Table 2. Configuration of lateral neck muscle strips 3. Five-layer rear neck module

[0033] The building has five layers, arranged from shallow to deep, as shown in the table below: Table 3: Configuration of posterior neck muscle strips Preferably, a point indicator component 22 is provided on the outer surface of the bionic muscle strip 21 along the direction of the muscle fibers. The point indicator component 22 consists of several independently driveable light-emitting points, including at least a first light-emitting point 221 for indicating the correct injection point and a second light-emitting point 222 for indicating incorrect interference points. The two are distinguished by different light-emitting colors, preferably: the first light-emitting point 221 is green and the second light-emitting point 222 is red. To ensure stable light emission on the surface of the elastic muscle strip and facilitate maintenance, the light-emitting points adopt a composite structure of "embedded LED + diffusion layer + sealant": micro-mounting grooves or embedded parts are opened at equal intervals along the longitudinal direction on the muscle strip 21, the LED is embedded in the mounting position and fixed with transparent silicone potting; the outside of the LED is covered with a hemispherical or micro-frosted light guide cap to make the light emission soft and remain visible at different viewing angles; the lead wire of the light-emitting point is connected to the wiring groove 211 inside the muscle strip and incorporated into the proximal micro plug-in to realize quick disassembly and replacement.

[0034] Preferably, each luminescent point has an independent control channel, which is controlled by the control box 41 in the control and display component 4. The luminescent points are arranged along the commonly used injection path, with a spacing of preferably 12–25 mm. The first luminescent point 221 is set in the recommended injection area of ​​the target muscle group, avoiding the main blood vessels and nerve danger zones. The second luminescent point 222 is distributed in common misjudgment areas, such as the junction of adjacent muscle groups or shallow areas that are easily confused. The two types of points are presented in a paired and segmented manner on the same muscle strip, making the correct and incorrect points clear at a glance. To improve durability, the potting layer of the luminescent point is flush with or slightly lower than the outer surface of the muscle strip by 0.1–0.2 mm, and the outer edge is rounded to prevent scratches during cleaning. The potting material is medical grade or alcohol-resistant transparent silicone, which meets the requirements of daily alcohol wiping and low-temperature disinfection.

[0035] Preferably, the control and display component 4 includes a control box 41 disposed on the periphery of the human body model 1 and a display screen 42 mounted on the control box, and together with an external point selection terminal 5, forms an integrated intelligent control system. The control box 41 is electrically connected to the neck gyroscope sensor 322, the light strips in each bionic muscle strip 21, and the first light-emitting point 221 and the second light-emitting point 222 to realize power supply, drive and data processing.

[0036] Preferably, the control box 41 has a built-in low-voltage DC power supply (preferably 12V), a main control board containing an MCU / SoC, an address-type LED driver board, a sensor interface board, and a data storage unit. A socket is provided on the side of the box for connecting the following: signals and power from the small wire bundle of the neck-root hub LED strip and the first and second light-emitting points 221 and 222; a data cable for the gyroscope sensor 322; and a data cable for the point selection terminal 5, preferably wired Type-C / RS-485, or optionally 2.4GHz / BLE wireless.

[0037] Specifically, the LED strip and light-emitting point lead wire of each bionic muscle strip 21 are first connected to a miniature connector at the proximal end, then converge into a small hub plate in the neck, then run down through the central hole of the rotating seat 312 and the inner cavity of the support frame 311, and finally pass through the wire passage hole of the protective cover 111 to reach the control box 41. The gyroscope 322 enters the box along the same path. The wire harness at the base of the neck is provided with a ring-shaped allowance and is protected with coils and stress-relieving components to ensure that there is no pulling or interference during multi-degree-of-freedom movement.

[0038] Preferably, the display screen 42 is an integrated touchscreen connected to the main control board via HDMI, used for human-computer interaction and data visualization. The point selection terminal 5 is a handheld or standing small panel containing numbers, function buttons, or a small touchscreen, used to input or select "point numbers" in exam mode. Terminal 5 is connected to the control box 41 via a single cable for power supply and data multiplexing.

[0039] The control box 41 has two preset modes: teaching mode and examination mode, which can be switched on the display screen 42. 1. Teaching Mode: The operator places both hands on either side of the head and the back of the head, continuously applying force to the head and neck of the human model 1 to achieve the target posture. The gyroscope sensor 322, installed at the head-neck connection, outputs yaw, pitch, roll, and angular velocity signals to the control box 41 in real time. Based on its built-in "phenotypic-responsible muscle-point" rule library, the control box 41 automatically illuminates the longitudinal light strip of the corresponding bionic muscle strip 21 to indicate the affected area, and only illuminates the first light-emitting point 221 on that muscle group as a standardized injection point; the second light-emitting point 222 is off or dimly lit by default as a control. As the posture deflection approaches or crosses the threshold, the system synchronously increases the brightness of the relevant muscle strip light strip, and the rhythmic flashing creates a visual linkage between movement, muscle group, and point. The display screen 42 presents the angle curve, posture range, and list of activated muscle groups in real time; when the operator releases the force, the mechanism elastically returns to center, and the light strip and point indicator synchronously fall back to the baseline.

[0040] Table 4 Phenotype—Responsible Muscle—Location Rule Base Exam Format: Under the premise that the model remains stationary or in a specified default posture, the control box 41 generates the current scoring set based on the "phenotype-responsible muscle-point" rule base. The first luminous point 221 on the target muscle group is the "correct set", and all the second luminous points 222 are the "interference set". Then, all luminous points in the set are randomly shuffled and a temporary ID is generated for each point. To avoid hints, the ID is only displayed on the interface of the point selection terminal 5. The indicator lights on the model end are not color-sensitive, or are uniformly dimmed or turned off. The examinee selects the injection point according to the ID on the terminal 5 and confirms the submission. The control box 41 reverse-maps the selected ID to the actual point, the first luminous point 221 and the second luminous point 222, and records the timestamp, reaction time and answer sequence. The system supports setting time limits for each question and multiple rounds of randomization. The ID and randomization seed are reset between rounds to ensure fairness. After the evaluation, the control box 41 automatically calculates according to the preset standards and generates a report on the display screen 42, including indicators such as the correct point hit rate, the first light-emitting point 221 hit, the correct selection, the error point avoidance rate, the second light-emitting point 222 not selected, the average reaction time, and the error distribution of the muscle strips. The results can be exported and stored for retraining and traceability analysis. Example 2

[0041] This application discloses a teaching mold and method for type A botulinum toxin injection, including the following steps: I. Installation and Self-Test S101: Assemble the corresponding modules and levels of bionic muscle strips 21 according to the target phenotype; S102: Connect the proximal end connector of the muscle strip to the cable tray at the root of the neck, and lead the cable harness down to the control box 41 through the inner cavity of the rotating seat 312 and the support frame 311; S103: Power-on self-test, display screen 42 shows the status of each channel, sensor connection and light strip, and point inspection results.

[0042] II. Teaching Model S201: The operator uses both hands to pry the head to the target posture; the gyroscope sensor 322 outputs yaw, pitch, and roll angles to the control box 41 in real time; S202: The control box 41 maps the posture to muscle group weights according to the rule base, automatically lights up the longitudinal light strip of the corresponding muscle strip 21 and only lights up the first light-emitting point 221, while the second light-emitting point 222 is off or dim by default. S203: When the posture approaches or crosses the threshold, the brightness / rhythm of the relevant muscle strips (such as breathing flashes) increases accordingly, forming an intuitive association between "movement - muscle group - point"; the display screen 42 simultaneously draws the angle curve, posture range and list of activated muscle groups; after relaxing and returning to the center, it prompts to fall back to the baseline.

[0043] III. Examination Mode S301: Position the head and neck in a neutral position; control box 41 generates the current round's scoring set from the rule base based on the tested phenotype (the first luminous point 221 of the target muscle group is the "correct set", and all the second luminous points 222 are the "interference set"); S302: The control box 41 randomly scatters all the light-emitting points in the set and generates a temporary ID number. The ID number is only displayed on the point selection terminal 5 interface. To avoid hints, the indicator lights on the model end can be uniformly dimmed or turned off. S303: The candidate selects a number on terminal 5 and confirms submission; control box 41 reverse-maps the number to the actual location and records the timestamp, response time and answer sequence; S304: After completion, the system automatically calculates metrics such as correct hit rate, incorrect hit avoidance rate, and average reaction time, generating a report on display screen 42 that can be exported and stored for retraining and source analysis. If multiple rounds of testing are conducted, the round numbering and randomized seeding are reset each time to ensure fairness.

[0044] IV. Cleaning and Maintenance (Key Points) S401: The protective cover 111 and the base 112 are quick-release; the bionic muscle strip 21 can be replaced individually. S402: Wipe the outer surface with alcohol and disinfect at low temperature; maintain electrical components after power is off; S403: Regularly inspect the wiring harness for stress relief and wear to ensure there is no interference with the actuating component 3.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A training mold for type A botulinum toxin injection, comprising a human model (1), characterized in that, Also includes: A neck bionic component (2) is set at the neck position of the human model (1) and includes at least one detachable bionic muscle strip (21) corresponding to the type A botulinum toxin injection target muscle. The motion component (3) is set inside the human body model (1) and connected to the head of the human body model (1) for driving the head and neck of the human body model (1) to produce at least one of the following postures: flexion, extension, twisting and tilting, in order to activate the corresponding bionic muscle strip (21). The control and display component (4) is electrically connected to the neck bionic component (2) and the motion component (3).

2. The type A botulinum toxin injection teaching mold according to claim 1, characterized in that, The bionic muscle strip (21) is a strip-shaped translucent elastic element formed along the direction of muscle fibers, and has a wiring groove (211) inside for accommodating the light strip and wires.

3. The type A botulinum toxin injection teaching mold according to claim 2, characterized in that, The target muscles of the bionic muscle strip (21) are selected from at least three or more of the following: sternocleidomastoid, trapezius, levator scapulae, splenius capitis, semispinalis capitis, semispinalis cervicis, longissimus capitis, longissimus cervicis, and inferior oblique capitis.

4. The type A botulinum toxin injection teaching mold according to claim 3, characterized in that, The surface of the bionic muscle strip (21) is provided with a dot indicator component (22), which includes several independently drivable light-emitting points; The light-emitting points include multiple first light-emitting points (221) for indicating the correct injection point and second light-emitting points (222) for indicating incorrect interference points, and the two are distinguished by different colored indicator lights.

5. The type A botulinum toxin injection teaching mold according to claim 1, characterized in that, Action component (3) includes: A horizontal rotation unit (31) is installed inside the human body model (1); The measuring unit (32) is rotatably and elastically connected to the horizontal rotating unit (31).

6. The type A botulinum toxin injection teaching mold according to claim 5, characterized in that, The horizontal rotation unit (31) includes: A support frame (311) is installed inside the human body model (1); The rotating seat (312) is rotatably connected to the support frame (311), and the rotation axis of the rotating seat (312) is arranged along the vertical direction of the human body model (1).

7. The type A botulinum toxin injection teaching mold according to claim 5, characterized in that, The measuring unit (32) includes: A ball joint (321) is rotatably connected to a rotating seat (312); A gyroscope sensor (322) is connected to the end of the ball joint (321) away from the rotating base (312) to output head and neck posture data; The elastic element (323) is arranged around the ball joint (321) in a circumferential direction. At least two of them are provided, and one end of the elastic element is elastically connected to the rotating seat (312), and the other end is elastically connected to the gyroscope sensor (322).

8. The type A botulinum toxin injection teaching mold according to claim 1, characterized in that, The control and display components (4) include: The control box (41) is located on the periphery of the human body model (1) and is electrically connected to the lamp strip inside the gyroscope sensor (322) and the bionic muscle strip (21); The display screen (42) is mounted on the control box (41).

9. The type A botulinum toxin injection teaching mold according to claim 1, characterized in that, It also includes a point selection terminal (5), which is electrically connected to the control box (41).

10. A method of using a type A botulinum toxin injection teaching mold according to any one of claims 1-9, characterized in that, Includes the following steps: S1: Based on the clinical phenotype to be trained, select and assemble the corresponding bionic muscle strips (21) in the anterior neck, lateral neck and posterior neck modules, and insert their proximal ends into the neck hub and electrically connect them to the control box (41). S2: Select practice mode or exam mode on the display screen (42); S201: In practice mode, the operator manually bends the head to the target posture. The gyroscope (322) transmits the posture angle to the control box (41). The control box (41) automatically lights up the relevant bionic muscle strips according to the rule library and only lights up the first light-emitting point (221). The display screen (42) displays the posture and activated muscle group information simultaneously. S202: In the examination mode, in the middle or default posture, the control box (41) generates the scoring criteria for this round and randomly numbers all the light-emitting points; the subject selects to submit on the terminal (5), the control box (41) determines the selected point as the first light-emitting point (221) or the second light-emitting point (222) and records the time taken, automatically scores according to the preset rules and outputs a report.

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