Orthopedic multi-finger teaching display device

Abstract

The invention belongs to the technical field of teaching display, and particularly discloses an orthopedic multi-finger teaching display device which comprises a mobile control box, an operation display device, a multi-axis operation arm, a follow-up video recorder and a vertical display, a frame arm is vertically installed above the mobile control box, and a drawer table is fixedly installed above the outer portion of the frame arm. According to the multi-axis bone and finger model comprehensive demonstration device, through cooperative work of the multi-axis arm and the adjustable video recording unit, multi-angle and high-multiple clear presentation of overall and local details of a bone and finger model is achieved; magnified images can be transmitted to the vertical display for students in the back row to observe; meanwhile, multi-degree-of-freedom adjustment and folding storage of the video unit are realized through the driving piece and the telescopic piece, so that the space adaptability is greatly improved; the structure of the quick-release rotating piece enables the close-up lens to be convenient to disassemble and assemble, and the teaching efficiency and the operation flexibility are remarkably improved.

Description

A teaching and demonstration device for polydactyly in orthopedics Technical Field

[0001] This invention belongs to the field of teaching demonstration technology, and specifically discloses a teaching demonstration device for polydactyly in orthopedics. Background Technology

[0002] Orthopedic education is a crucial component of medical education, vital for cultivating physicians' anatomical knowledge and surgical skills. The bones of the fingers, as one of the most delicate and mobile structures in the human body, present a far greater challenge for teaching demonstrations than other parts of the body due to their complex anatomical forms and multidimensional movement relationships. Traditional teaching methods often rely on two-dimensional anatomical atlases, static models, or cadaver specimens. However, these methods struggle to dynamically and three-dimensionally demonstrate the spatial configuration and intricate structures of the fingers, often leaving students to rely on imagination for understanding, thus limiting the effectiveness of the teaching.

[0003] With the development of multimedia technology, some educational institutions have introduced 3D reconstruction software, projection equipment, and robotic arm-assisted display systems, attempting to achieve multi-angle observation of bone and finger models by using multi-axis surgical arms to drive cameras or projectors. However, existing equipment still has the following significant shortcomings in practical applications:

[0004] The structures of the fingers are minute, such as articular surfaces, ligament attachment points, and the pathways of blood vessels and nerves. Conventional camera equipment lacks sufficient resolution when shooting from a distance or at a wide angle, making it difficult to clearly present local details. Even with multi-axis arms to adjust the angle, limitations in optical zoom and pixel count still cannot meet the needs of refined teaching.

[0005] In the surgical observation room teaching setting, there are many students, and the existing medical surgical display equipment is small. Students in the back row have difficulty identifying key structures, which leads to a decline in the quality of teaching content and uneven teaching results.

[0006] Additional display devices are often large in size and need to be fixed to the outside of the surgical display equipment, which takes up a lot of space. Moreover, the installation and disassembly process is cumbersome, which not only consumes manpower but also easily causes equipment damage. They are difficult to adapt to teaching use and cannot meet teaching needs.

[0007] Given the significant shortcomings of existing orthopedic teaching demonstration devices in terms of detail presentation, spatial adaptability, ease of operation, and functional integration, there is an urgent need to develop a teaching device that can simultaneously provide high-definition detail display, flexible adjustment, small footprint, and easy storage, in order to improve the efficiency and quality of orthopedic polydactyly teaching. Summary of the Invention

[0008] The purpose of this invention is to address the problems existing in the prior art by proposing an orthopedic polydactyly teaching demonstration device, comprising a mobile control box, a surgical display device, a multi-axis surgical arm, a follow-up camera, and a vertical display. A support arm is vertically mounted on top of the mobile control box, and a drawer platform is fixedly mounted on the upper exterior of the support arm. The bottom of the surgical display device is connected to the top of the drawer platform. The follow-up camera is mounted on the drive end of the multi-axis surgical arm, which is mounted above the drawer platform and behind the surgical display device. The vertical display is located on one side of the mobile control box. The vertical display contains... A connector is installed on one side, and card holders are fixedly installed on both sides of the outer wall of the drawer. The two card holders are connected to bent arms by symmetrically arranged internal drive components. The ends of the two bent arms away from the card holders are fixedly fitted with sleeve rods. The sleeve rods are connected to slides by telescopic components on their inner surfaces. A crossbar is installed between the two sleeve rods. The two slides are connected to a slide block by a reciprocating component. The slide block is connected to a video recorder by a locking component above it. An I-shaped locking block is fixedly installed above the locking component. The I-shaped locking block is connected to an image magnifier by a quick-release rotating component inside it.

[0009] In the above technical solution, the driving component further includes a rotary motor fixedly installed inside the lower part of the card holder, a rotary tooth fixedly sleeved on the output end of the rotary motor, a drive shaft rotatably connected inside the upper part of the card holder, a drive tooth fixedly sleeved on the outside of the drive shaft, the drive tooth meshing with the rotary tooth, a housing fixedly sleeved on the outside of the drive shaft, and the lower end of the bent arm fixedly connected to the outside of the housing.

[0010] In the above technical solution, the telescopic component further includes an electric telescopic rod fixedly mounted on the inner surface of the sleeve rod, and the telescopic end of the electric telescopic rod is connected to the bottom of the slide table.

[0011] In the above technical solution, the reciprocating component further includes a motor and a lead screw. The lead screw is rotatably mounted between two slides. The motor is fixedly mounted inside one of the slides. The output shaft of the motor passes through the outside of one side of the slide and is connected to one end of the lead screw. The slide block is threadedly connected to the lead screw. The end of the slide block away from the lead screw slides outside the crossbar.

[0012] In the above technical solution, the mounting component further includes a clamping shell that is fixedly fitted onto the outside of the video recorder, and the bottom of the clamping shell is fixedly connected to the slide base.

[0013] In the above technical solution, the quick-release rotating component further includes a frame rod, a limiting component is provided on one side of the frame rod, and two rotating shafts are fixedly installed on both ends of the side of the frame rod away from the limiting component. The two rotating shafts are rotatably sleeved with limiting rods. The two limiting rods are L-shaped and are movably engaged inside the I-shaped locking block. A U-shaped locking post is movably inserted above the I-shaped locking block, and both ends of the U-shaped locking post are movably engaged with one side of the limiting rod.

[0014] In the above technical solution, the image magnifying component further includes a mounting bracket, which is fixedly installed on one end of the support rod away from the limiting rod. A frame is embedded inside the mounting bracket, and a close-up lens is installed inside the frame.

[0015] In the above technical solution, the limiting component further includes a gravity pressure bar that slides through the inside of the frame pole, and an arc-shaped rubber ring is fixedly installed at the bottom end of the gravity pressure bar, with the inner surface of the arc-shaped rubber ring adhering to the outside of the video recorder.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This invention significantly improves the clarity of detail presentation in orthopedic teaching of bone and finger structures. Addressing the technical challenges of the minute structure of bone and fingers and the difficulty of clearly displaying joint surfaces and ligament attachment points with conventional imaging equipment, this invention achieves high-magnification optical magnification of minute details of bone and fingers by incorporating a quick-release rotating component connecting an image magnifier at the front of the video recorder. Specifically, it employs a structure where a close-up lens is installed inside a frame, enabling high-magnification optical magnification of fine details of bone and fingers. Combined with a multi-axis surgical arm driving a follow-up camera to track and capture bone and finger models from multiple angles, and a sliding table and reciprocating components driving the video recorder to move synchronously, this invention captures bone and finger details from multiple dimensions and transmits them in real time to surgical display equipment and vertical monitors. This allows trainees in the back row to clearly identify key anatomical structures, significantly improving the quality of teaching content delivery.

[0018] 2. This invention optimizes the spatial adaptability of the equipment, solving the problem of existing auxiliary display devices being bulky and occupying too much space. By setting brackets on both sides of the drawer table and connecting them with curved arms, installing sleeve rods and telescopic components at the ends of the curved arms, and setting a crossbar and reciprocating component between the two sleeve rods to drive the slide, the video recorder and image magnifier can be folded and stored on the side of the drawer table when not in use by rotating the curved arms and retracting the sleeve rods. The entire device is integrated above the mobile control box, with a compact layout. Compared with traditional auxiliary devices that need to be fixedly installed outside the surgical display equipment, it significantly reduces space occupation and adapts to flexible deployment in teaching venues of different sizes.

[0019] 3. This invention significantly improves the ease of operation and adjustment flexibility, solving the problems of difficult angle adjustment and cumbersome disassembly in existing equipment. Through the rotational motor in the drive component engaging with the horizontal rotation of the bent arm, the electric telescopic rod in the telescopic component driving the slide table to rise and fall, and the motor in the reciprocating component cooperating with the lead screw driving the slide block to move laterally, automatic and precise positioning of the video recorder and image magnification component in three-dimensional space is achieved, allowing for quick alignment of the teaching area without the need for manual adjustment of multiple joints. Simultaneously, the quick-release rotating component employs a structure of limit rod engaging I-shaped blocks with U-shaped locking posts, and a gravity pressure rod combined with an arc-shaped rubber ring for limiting components, enabling rapid installation and removal of the close-up lens. Furthermore, the automatic gravity-pressed video recorder greatly simplifies the teaching preparation and equipment replacement process. Attached Figure Description

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a schematic diagram of the overall structure of the present invention from another angle;

[0022] Figure 3 is a schematic diagram of the connection structure between the slide, the crossbar, and the curved arm of the present invention.

[0023] Figure 4 is a schematic diagram of the connection structure between the slide, the crossbar, and the bent arm of the present invention from another angle.

[0024] Figure 5 is a schematic diagram of the connection structure between the slide and the sleeve rod of the present invention;

[0025] Figure 6 is a schematic diagram of the connection structure of the quick-release rotating component of the present invention;

[0026] Figure 7 is a schematic diagram of the connection structure of the present invention with the two limiting rods detached from the inside of the I-shaped block.

[0027] In the diagram: 1. Mobile control box; 2. Frame arm; 3. Drawer table; 4. Surgical display device; 5. Multi-axis surgical arm; 6. Follow camera; 7. Vertical display; 8. Curved arm; 9. Sleeve rod; 10. Connector; 11. Crossbar; 12. Motor; 13. Electric telescopic rod; 14. Drive shaft; 15. Drive gear; 16. Card holder; 17. Rotary gear; 18. Rotary motor; 19. Housing; 20. Lead screw; 21. Slide table; 22. Mounting bracket; 23. Close-up lens; 24. Card frame; 25. Clamping shell; 26. Frame rod; 27. Gravity pressure rod; 28. Rotating shaft; 29. ​​Limiting rod; 30. U-shaped locking post; 31. I-shaped locking block; 32. Arc-shaped rubber ring; 33. Slide seat; 34. Video recorder. Detailed Implementation

[0028] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0030] As shown in Figures 1-7, an orthopedic polydactyly teaching demonstration device includes a mobile control box 1, a surgical display device 4, a multi-axis surgical arm 5, a follow-up camera 6, and a vertical display 7. A support arm 2 is vertically mounted on top of the mobile control box 1, and a drawer platform 3 is fixedly mounted on the upper exterior of the support arm 2. The bottom of the surgical display device 4 is connected to the top of the drawer platform 3. The follow-up camera 6 is mounted on the drive end of the multi-axis surgical arm 5, which is mounted above the drawer platform 3 and behind the surgical display device 4. The vertical display 7 is located on one side of the mobile control box 1, and a connector 10 is installed on one side inside the vertical display 7. Both sides of the outer wall of the drawer 3 are fixedly installed with card seats 16. The two card seats 16 are connected to the curved arms 8 through the internally symmetrically arranged driving components. The ends of the two curved arms 8 away from the card seats 16 are fixedly fitted with sleeve rods 9. The sleeve rods 9 are connected to the slide table 21 through the telescopic components arranged on the inner surface. The crossbar 11 is installed between the two sleeve rods 9. The two slide tables 21 are connected to the slide seat 33 through the set reciprocating component. The slide seat 33 is connected to the video recorder 34 through the above-set locking component. The I-shaped locking block 31 is fixedly installed above the locking component. The I-shaped locking block 31 is connected to the image magnifier through the internally set quick-release rotating component.

[0031] In this embodiment, the mobile control box 1 serves as the core of the machine's movement and control, and has a built-in power supply, control motherboard, and driver module, which facilitates flexible transfer between teaching scenarios.

[0032] The support arm 2 is used to support the drawer table 3 and the surgical display device 4 to ensure the stability of the overall structure. The drawer table 3 is equipped with a set of sliding pull plates. A keyboard can be placed on the top of the pull plates. The surgical display device 4 is used to display the overall image of the bone finger captured by the camera 6 in real time, along with its own shape parameters, for students to observe. During the teaching process, the multi-axis surgical arm 5 can track and capture the bone finger model from multiple angles according to teaching needs, improving the flexibility of observation. The vertical display 7 is connected to the video recorder 34 through the connector 10 and external wires to receive the captured detailed images, making it easy for students in the back row to clearly identify them.

[0033] The reciprocating and telescopic parts work in conjunction with the slide table 21 and slide base 33 to achieve multi-dimensional adjustment of the video recorder 34, enabling precise magnification of the bone finger area and significantly improving the ability to teach details.

[0034] The video signal transmission between the surgical display device 4, the video recorder 34 and the vertical display 7 all use conventional HDMI or SDI interfaces, which are existing video connection technologies. The specific connection methods will not be described in detail here.

[0035] The driving component includes a rotary motor 18 fixedly installed inside the lower part of the card holder 16. A rotary tooth 17 is fixedly sleeved on the output end of the rotary motor 18. A drive shaft 14 is rotatably connected inside the upper part of the card holder 16. A drive tooth 15 is fixedly sleeved on the outside of the drive shaft 14. The drive tooth 15 meshes with the rotary tooth 17. A housing 19 is fixedly sleeved on the outside of the drive shaft 14. The lower end of the bent arm 8 is fixedly connected to the outside of the housing 19.

[0036] In this embodiment, when the rotary motor 18 is started, the rotating gear 17 drives the drive gear 15 to rotate, thereby causing the drive shaft 14 to rotate within the holder 16. The outer casing 19 of the drive shaft 14 rotates accordingly, causing the curved arm 8 to swing in the horizontal plane. This driving method has the advantages of compact structure, smooth transmission, and precise angle control, enabling the video recorder 34 to be quickly positioned in the horizontal direction, adapting to the shooting needs of different teaching positions, and also allowing the video recorder 34 to record on one side of the surgical display device 4.

[0037] The telescopic component includes an electric telescopic rod 13 fixedly mounted on the inner surface of the sleeve rod 9, and the telescopic end of the electric telescopic rod 13 is connected to the bottom of the slide table 21;

[0038] In this embodiment, by controlling the extension or retraction of the electric telescopic rod 13, the slide table 21 is driven to slide up and down, thereby realizing the vertical height adjustment of the video recorder 34.

[0039] The reciprocating component includes a motor 12 and a lead screw 20. The lead screw 20 is rotatably mounted between two slides 21. The motor 12 is fixedly mounted inside one of the slides 21. The output shaft of the motor 12 passes through the outside of one side of the slide 21 and is connected to one end of the lead screw 20. The slide 33 is threadedly connected to the lead screw 20. The end of the slide 33 away from the lead screw 20 slides outside the crossbar 11.

[0040] In this embodiment, when the motor 12 drives the lead screw 20 to rotate, the slide 33 moves along the axial direction of the lead screw 20, and the crossbar 11 acts as a guide to prevent the slide 33 from deflecting. This reciprocating mechanism enables the video recorder 34 to move precisely in the horizontal direction, which facilitates joint-by-joint or finger-by-finger shooting along the longitudinal arrangement of the bones and fingers, improving the continuity and systematic nature of the teaching content.

[0041] The mounting component includes a clip shell 25 that is fixedly mounted on the outside of the video recorder 34, and the bottom of the clip shell 25 is fixedly connected to the slide base 33;

[0042] In this embodiment, the housing 25 is a rigid shell that matches the shape of the video recorder 34, and a buffer pad can be installed inside to ensure that the video recorder 34 is stable and does not shake during movement. This design simplifies the installation process of the video recorder 34, avoids the use of additional fasteners, and improves the reliability of equipment installation and the convenience of disassembly.

[0043] The quick-release rotating component includes a frame rod 26. A limiter is provided on one side of the frame rod 26. Two rotating shafts 28 are fixedly installed on both ends of the side of the frame rod 26 away from the limiter. Limiter rods 29 are rotatably sleeved on the outside of the two rotating shafts 28. The two limiter rods 29 have an L-shaped structure and are movably engaged inside the I-shaped locking block 31. A U-shaped locking post 30 is movably inserted above the I-shaped locking block 31. Both ends of the U-shaped locking post 30 are movably engaged on one side of the limiter rod 29.

[0044] In this embodiment, the two sets of limiting rods 29 are L-shaped, which facilitates locking and unlocking. When locked, the limiting rods 29 are close to each other and fit against one side of the inside of the I-shaped locking block 31. Then, the U-shaped locking post 30 is inserted into one side of the limiting rod 29. As a result, the image magnifying component can be quickly installed and removed without additional tools.

[0045] The image magnifier includes a mounting bracket 22, which is fixedly mounted on the end of the support rod 26 away from the limiting rod 29. A frame 24 is embedded inside the mounting bracket 22, and a close-up lens 23 is installed inside the frame 24.

[0046] In this embodiment, the close-up lens 23 optically magnifies the area of ​​the bone finger in front of the video recorder 34 lens, making fine structures such as joint surfaces and ligament attachment points clearly visible on the vertical display 7. This design achieves low-cost, high-efficiency detail magnification without replacing high-end camera equipment, and is particularly suitable for focusing on the explanation of minute structures in orthopedic polydactyly teaching.

[0047] The limiting component includes a gravity pressure bar 27 that slides through the inside of the frame rod 26. An arc-shaped rubber ring 32 is fixedly installed at the bottom end of the gravity pressure bar 27, and the inner surface of the arc-shaped rubber ring 32 is attached to the outside of the video recorder 34.

[0048] In this embodiment, under the action of gravity, the gravity rod 27 slides down naturally, causing the inner surface of the arc-shaped rubber ring 32 to adhere to the outer shell of the video recorder 34, forming a flexible clamping effect to prevent the support rod 26 from shaking or shifting during use. This limiting structure requires no additional power source, relying on its own weight to achieve automatic locking. It has a simple structure, responds quickly, and effectively ensures the coaxiality of the close-up lens 23 and the lens of the video recorder 34, ensuring clear and stable imaging.

[0049] The gravity pressure bar 27 is designed because the rear end of the support pole 26 is installed by rotating the limiting rod 29. This ensures that the close-up lens 23 can move synchronously with the video recorder 34, thereby preventing the front end of the support pole 26 from shaking.

[0050] Working Principle: During orthopedic polydactyly teaching demonstrations, the bone finger model or real specimen is first placed within the shooting range of the follow-up camera 6. The bone finger model is typically placed on a hospital bed or teaching table. The main power supply in the mobile control box 1 is turned on, and the surgical display device 4 and the vertical monitor 7 are simultaneously activated. The multi-axis surgical arm 5 adjusts its posture according to teaching needs, driving the follow-up camera 6 to track and capture the bone finger model from multiple angles. The captured images are transmitted in real time to the surgical display device 4 for trainees to observe the overall structure initially. When further magnification is needed to observe details of the bone finger, such as joint surfaces and ligament attachment points, the operator activates the drive mechanism. A rotary motor 18 drives a rotating gear 17 to rotate, which in turn drives a meshing drive gear 15, causing the drive shaft 14 to rotate within the mounting bracket 16. This, in turn, causes the curved arm 8 to swing horizontally via the sleeve 19, moving the video recorder 34 and the image magnifier to one side of the drawer table 3. Subsequently, the electric telescopic rod 13 in the telescopic component pushes the slide table 21 up and down along the sleeve rod 9, adjusting the vertical height of the video recorder 34. The motor 12 in the reciprocating component drives the lead screw 20 to rotate, causing the slide 33, which is threaded to the lead screw 20, to move laterally along the crossbar 11, thereby precisely aligning the video recorder 34 with the details of the bone finger to be observed. During this process, the clamping shell 25 in the mounting component firmly fixes the video recorder 34 to the slide 33, ensuring stability of movement. The image magnifier is connected to the video recorder 34 via a quick-release rotating component. One end of the support rod 26 is inserted into the I-shaped locking block 31 via a limiting rod 29 and locked with a U-shaped locking post 30, while the other end is fitted with a mounting bracket 22 for mounting a close-up lens 23. The gravity-pressure rod 27 in the limiting component slides down by its own weight, causing the arc-shaped rubber ring 32 to fit tightly against the housing of the video recorder 34, preventing the support rod 26 from wobbling and ensuring that the close-up lens 23 remains coaxial with the lens of the video recorder 34. The close-up lens 23 optically magnifies the bone and finger area on the screen of the surgical display device 4 and transmits the magnification to the vertical display 7 via a wired connection, allowing students in the back row to clearly identify fine structures.

[0051] After the lesson, the upper drive mechanism can be reversed to rotate the curved arm 8 back to the lower side of the drawer table 3. At the same time, the electric telescopic rod 13 retracts, lowering the slide table 21 to its lowest position. The entire video recorder 34 assembly is folded and stored on both sides of the drawer table 3, significantly reducing space occupation. The quick-release rotating part allows the U-shaped locking post 30 to be pulled out by hand, disengaging the limiting rod 29 from the I-shaped locking block 31. The entire device is integrated on top of the mobile control box 1, allowing for flexible movement according to the teaching site. It can be installed and used immediately, and stored away immediately, effectively improving the efficiency and quality of orthopedic polydactyly teaching.

[0052] 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 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 claimed invention.

Claims

1. An orthopedic polydactyly teaching demonstration device, comprising a mobile control box (1), a surgical display device (4), a multi-axis surgical arm (5), a follow-up camera (6), and a vertical display (7), characterized in that: A support arm (2) is vertically mounted above the mobile control box (1). A drawer platform (3) is fixedly mounted on the outside of the support arm (2). The bottom of the surgical display device (4) is connected to the top of the drawer platform (3). The follow camera (6) is mounted on the drive end of the multi-axis surgical arm (5). The multi-axis surgical arm (5) is mounted above the drawer platform (3) and behind the surgical display device (4). The vertical display (7) is located on one side of the mobile control box (1). A connector (10) is installed on one side inside the vertical display (7). Card slots (16) are fixedly mounted on both sides of the outer wall of the drawer platform (3). The two card slots (16) are connected to each other. The drive components arranged symmetrically inside are connected to the curved arms (8). The ends of the two curved arms (8) away from the card seat (16) are fixedly fitted with sleeve rods (9). The sleeve rods (9) are connected to the slides (21) through the telescopic components arranged on the inner surface. A crossbar (11) is installed between the two sleeve rods (9). The two slides (21) are connected to the slide base (33) through the reciprocating component. The slide base (33) is connected to the video recorder (34) through the card fitting arranged above. An I-shaped card block (31) is fixedly installed above the card fitting. The I-shaped card block (31) is connected to the image magnifier through the quick-release rotating component arranged inside.

2. The orthopedic polydactyly teaching demonstration device according to claim 1, characterized in that: The driving component includes a rotary motor (18) fixedly installed inside the lower part of the card holder (16). A rotary tooth (17) is fixedly sleeved on the output end of the rotary motor (18). A drive shaft (14) is rotatably connected inside the upper part of the card holder (16). A drive tooth (15) is fixedly sleeved on the outside of the drive shaft (14). The drive tooth (15) meshes with the rotary tooth (17). A housing (19) is fixedly sleeved on the outside of the drive shaft (14). The lower end of the bent arm (8) is fixedly connected to the outside of the housing (19).

3. The orthopedic polydactyly teaching demonstration device according to claim 1, characterized in that: The telescopic component includes an electric telescopic rod (13) fixedly mounted on the inner surface of the sleeve rod (9), and the telescopic end of the electric telescopic rod (13) is connected to the bottom of the slide table (21).

4. The orthopedic polydactyly teaching demonstration device according to claim 1, characterized in that: The reciprocating component includes a motor (12) and a lead screw (20). The lead screw (20) is rotatably mounted between two slides (21). The motor (12) is fixedly mounted inside one of the slides (21). The output shaft of the motor (12) passes through the outside of one side of the slide (21) and is connected to one end of the lead screw (20). The slide block (33) is threadedly connected to the lead screw (20). The end of the slide block (33) away from the lead screw (20) slides outside the crossbar (11).

5. The orthopedic polydactyly teaching demonstration device according to claim 1, characterized in that: The mounting component includes a clamping shell (25) that is fixedly mounted on the outside of the video recorder (34), and the bottom of the clamping shell (25) is fixedly connected to the slide (33).

6. The orthopedic polydactyly teaching demonstration device according to claim 1, characterized in that: The quick-release rotating component includes a frame rod (26). A limiting component is provided on one side of the frame rod (26). Both ends of the frame rod (26) away from the limiting component are fixedly installed with rotating shafts (28). Both rotating shafts (28) are rotatably sleeved with limiting rods (29). The two limiting rods (29) are L-shaped and are movably engaged inside an I-shaped locking block (31). A U-shaped locking post (30) is movably inserted above the I-shaped locking block (31). Both ends of the U-shaped locking post (30) are movably engaged on one side of the limiting rod (29).

7. The orthopedic polydactyly teaching demonstration device according to claim 6, characterized in that: The image magnifier includes a mounting bracket (22), which is fixedly mounted on the end of the support rod (26) away from the limiting rod (29). A frame (24) is embedded inside the mounting bracket (22), and a close-up lens (23) is installed inside the frame (24).

8. The orthopedic polydactyly teaching demonstration device according to claim 6, characterized in that: The limiting component includes a gravity pressure bar (27) that slides through the inside of the frame (26) and is fixedly installed with an arc-shaped rubber ring (32) at the bottom end of the gravity pressure bar (27). The inner surface of the arc-shaped rubber ring (32) is attached to the outside of the video recorder (34).

Images