Precise pediatric bone reduction device with angle positioning function

Abstract

The invention relates to the field of orthopedic medical instruments, and discloses a pediatric bone precise reduction device with an angle positioning function, which comprises a positioning ring a, a reinforcing block is fixedly connected to the front end of the positioning ring a, a connecting rod a is fixedly connected to the lower surface of the reinforcing block, and a connecting rod b is hinged to one end, away from the reinforcing block, of the connecting rod a; the end, away from the connecting rod a, of the connecting rod b is fixedly connected with a positioning ring b, an angle positioning and pressing assembly is arranged on the surface of the connecting rod a on the right side, and the angle positioning and pressing assembly is used for conducting multi-angle bending adjustment and fixing on the whole according to joints such as legs and knees of children. Through bevel gear transmission and universal joint design of the angle positioning and pressing assembly, multi-angle accurate adjustment is achieved, a rotating rod b drives a bevel gear a to rotate, through meshing transmission of the bevel gear a and a bevel gear b, a connecting rod b and a positioning ring b are driven to incline, and the reset angle requirements of the parts such as the elbow joint and the knee joint of the child are accurately met.

Description

Technical Field

[0001] This invention relates to the field of orthopedic medical device technology, specifically to a pediatric bone precision repositioning device with angle positioning function. Background Technology

[0002] Children's skeletal system is in a dynamic growth and development stage, especially the joints of the legs and knees. Their epiphyseal growth plates have not yet closed, their ligaments are highly elastic but not strong enough, and their limbs are small and their mobility is low. These physiological characteristics make the requirements for the precision and safety of skeletal repositioning in children much higher than in adults.

[0003] Children's bones are in the growth and development stage, with physiological characteristics such as unclosed epiphyses, large joint range of motion, and delicate bone. Bone reduction requires extremely high precision in the bending angle of the joint. Taking knee joint reduction as an example, the flexion angle needs to be controlled within the range of 90°±3°. An angle deviation of more than 5° may lead to postoperative knee joint movement restriction.

[0004] Patent CN 214858000 U discloses a fracture reduction and fixation device, including an upper fixation plate and a lower fixation plate. The upper fixation plate is located on top of the lower fixation plate, and screws are installed on the outer surfaces of both the upper and lower fixation plates through pre-drilled threaded holes. An arc-shaped block is provided on one side of the screw, and a bearing is installed at one end of the arc-shaped block through a pre-drilled groove. One end of the screw is located inside the bearing. Grooves corresponding to the arc-shaped blocks are formed on the inner surfaces of both the upper and lower fixation plates. A corresponding cover plate is provided on the top of the upper fixation plate through a pre-drilled groove, and limiting grooves are formed on both sides of the cover plate. The above-disclosed example does not adjust for the bending angle of the child's leg, resulting in poor overall applicability. Therefore, a precise pediatric bone reduction device with angle positioning function is proposed. Summary of the Invention

[0005] The purpose of this invention is to solve the problems mentioned in the background art, and thus propose a precise pediatric skeletal repositioning device with angle positioning function. The bevel gear transmission and universal joint design of the angle positioning and clamping component of this invention achieves precise multi-angle adjustment: the rotating rod b drives the bevel gear a to rotate, and through the meshing transmission of bevel gear a and bevel gear b, it drives the connecting rod b and the positioning ring b to tilt, precisely matching the repositioning angle requirements of the child's elbow, knee, and other joints; simultaneously, the universal joint on the surface of the rotating rod a ensures that the rotating rod a can still rotate stably after the connecting rod a and connecting rod b are tilted, avoiding transmission interruption during angle adjustment. Combined with the straight extension of the clamping plate driven by the inclined groove of the rotating disk, it can form uniform support for the repositioning points such as the knees of the legs. Furthermore, the reinforcement strap tightens to achieve multi-point binding and restraint of the knees, significantly reducing the displacement rate after fixation.

[0006] The technical solution adopted by this invention to solve its technical problem is: A pediatric skeletal precision repositioning device with angle positioning function includes a positioning ring a, a reinforcing block fixedly connected to the front end of the positioning ring a, a connecting rod a fixedly connected to the lower surface of the reinforcing block, a connecting rod b hinged to the end of the connecting rod a away from the reinforcing block, and a positioning ring b fixedly connected to the end of the connecting rod b away from the connecting rod a. An angle positioning and clamping component is provided on the surface of the right side of the connecting rod a, and an angle component is provided on the surface of the left side of the connecting rod a. The angle positioning and clamping component is used to make multi-angle adjustments according to the range of motion of the child's leg joints and to fix and reposition the pediatric skeletal joints. The angle component is used to determine the current bending angle of the overall skeletal structure, facilitating observation and adjustment by medical staff and family members.

[0007] Preferably, the angle positioning and clamping assembly includes a rotating rod a, a gear a fixedly connected to the front end of the rotating rod a, a rotating disk rotatably connected to the inner wall of the positioning ring a, a groove formed on one side of the surface of the rotating disk, a toothed block fixedly connected to the side wall of the groove of the rotating disk, a clamping plate slidably connected through the inner side wall of the positioning ring a, a protruding rod fixedly connected to the surface of the clamping plate, a universal joint fixedly connected to the center of the surface of the rotating rod a, a reinforcing band hinged to the top of the rotating disk, and a connecting block hinged to the end of the reinforcing band away from the rotating disk.

[0008] Preferably, a bevel gear b is fixedly connected to the rotation center axis of the connecting rod b, a bevel gear a meshes with the outer side of the bevel gear b, a rotating rod b is fixedly connected to the center of the rear end of the bevel gear a, a support block is fixedly connected to the outer sidewall of the connecting rod a, an adjusting seat is fixedly connected to the outer end of the connecting rod a away from the support block, a gear b and a gear c are rotatably connected to the inner sidewall of the adjusting seat, a lifting screw is rotatably connected to the upper surface of the adjusting seat, a sliding plate is threadedly connected to the surface of the lifting screw, a rack is slidably connected to both sides of the sliding plate, and a self-locking screw is threadedly connected to the inner wall of the rack.

[0009] Preferably, the angle component includes an indicator block, which is fixedly connected to the surface of the left connecting rod a, and a scale is fixedly connected to the rotation center point of the right connecting rod b, the surface of which is provided with angle scale.

[0010] Preferably, the angle component includes an indicator block, which is fixedly connected to the surface of the left connecting rod a, and a scale is fixedly connected to the rotation center point of the right connecting rod b, the surface of which is provided with angle scale.

[0011] Preferably, the surface of the rotating disk has an inclined groove, the protruding rod passes through and is slidably connected to the inner side wall of the inclined groove of the rotating disk, and the rotating rod a passes through and is rotatably connected to the inner side wall of the positioning ring a.

[0012] Preferably, the rotating rod a is rotatably connected to the inner wall of the adjusting seat, and the rotating rod b is rotatably connected to the inner wall of the adjusting seat.

[0013] Preferably, the rotating rod a passes through and is rotatably connected to the inner wall of the support block, and the rotating rod b passes through and is rotatably connected to the inner wall of the support block.

[0014] Preferably, the rotating rod b passes through and is fixedly connected to the gear c, and the rotating rod a passes through and is fixedly connected to the gear b.

[0015] Preferably, the two sets of racks mesh with gear b and gear c respectively, the two sets of racks pass through and are slidably connected to the inner sidewall of the adjusting seat, and the self-locking screw contacts the outer sidewall of the sliding plate.

[0016] The present invention has the following beneficial effects: 1. The bevel gear transmission and universal joint design of the angle positioning and clamping component of this invention achieves precise multi-angle adjustment: the rotating rod b drives the bevel gear a to rotate, and through the meshing transmission of the bevel gear a and bevel gear b, the connecting rod b and the positioning ring b are driven to tilt, precisely matching the reset angle requirements of the child's elbow joint, knee joint and other parts; at the same time, the universal joint on the surface of the rotating rod a can ensure that the rotating rod a can still rotate stably after the connecting rod a and the connecting rod b are tilted, avoiding the interruption of transmission during the angle adjustment process. With the straight extension of the clamping plate driven by the inclined groove of the rotating disk, it can form uniform support for the reset points such as the knee of the leg. Then, the reinforcement belt is tightened to achieve multi-point binding and restraint of the knee of the leg, and the displacement rate is significantly reduced after fixation.

[0017] 2. This invention achieves simultaneous angle adjustment and clamping fixation through the linkage structure of the sliding plate and double racks within the adjustment seat: rotating the lifting screw lowers the sliding plate, and the racks on both sides simultaneously mesh with gears b and c, driving rotating rods a and b to rotate synchronously. While rotating rod b adjusts the angle, rotating rod a drives the rotating disk to rotate, simultaneously extending the clamping plate and tightening the reinforcing band. This can be operated by a single person, significantly reducing the time spent by the child crying and struggling. Furthermore, the threaded fit between the sliding plate and the lifting screw is self-locking, maintaining a stable state after adjustment without additional locking. For finer adjustments, loosening the self-locking screw allows individual pushing of a specific set of racks to control the clamping force or bending angle, adapting to the repositioning needs of different parts and types of children's legs and knees, avoiding secondary injuries caused by repeated operations.

[0018] 3. The design of the dial and marker block of the angle component of this invention enables real-time and intuitive display of the reset angle: When the connecting rod b rotates, the dial at its center point rotates synchronously, and the marker block on the surface of the left connecting rod a always accurately points to the angle scale on the dial surface. Medical staff can read the current bending angle in real time without interrupting the operation, ensuring that the angle meets the reset standard. At the same time, parents can also clearly understand the reset angle through the dial, which is convenient for monitoring changes in limb angle during postoperative rehabilitation, forming a collaborative treatment mode of medical staff operation and parental cooperation.

[0019] 4. The present invention rotates bevel gear a, causing bevel gear b to rotate as a whole, which drives two sets of connecting rods b and their rear positioning ring b to tilt at an angle, adjusting the overall reset support angle according to the different children's legs, knees, arms or legs.

[0020] 5. This invention uses the self-locking screw on the inner wall of the rotating rack to disengage it from the outer side wall of the sliding plate, thereby releasing the lock between the rack and the sliding plate and enabling independent fine-tuning of the clamping force and bending angle. The overall design ensures the accuracy of the angle and the stability of the fixation when the child's leg, knee, etc. are reset through the coordinated operation of the angle positioning and clamping components and the scale display of the angle components, thus avoiding displacement of the leg, knee, etc. during the reset process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall side view structure of the present invention; Figure 3 This is a partial cross-sectional view of the positioning ring a of the present invention; Figure 4 This is a partial cross-sectional view of the positioning ring a of the present invention, showing its separated state from the rotating disk. Figure 5 This is a three-dimensional structural diagram of bevel gear a and bevel gear b of the present invention; Figure 6 This is a partial cross-sectional view of the adjustment seat of the present invention.

[0022] in: 1. Positioning ring a; 2. Reinforcing block; 3. Connecting rod a; 4. Connecting rod b; 5. Positioning ring b; 6. Angle positioning and clamping assembly; 601. Rotating rod a; 602. Gear a; 603. Gear block; 604. Rotating disk; 605. Reinforcing belt; 606. Connecting block; 607. Protruding rod; 608. Clamping plate; 609. Adjusting seat; 610. Support block; 611. Universal joint; 612. Rotating rod b; 613. Bevel gear a; 614. Bevel gear b; 615. Lifting screw; 616. Sliding plate; 617. Self-locking screw; 618. Rack; 619. Gear b; 620. Gear c; 7. Marker block; 8. Dial. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example: like Figures 1-6 As shown, this embodiment of the invention provides a precise pediatric skeletal repositioning device with angle positioning function, including a positioning ring a1, a reinforcing block 2 fixedly connected to the front end of the positioning ring a1, a connecting rod a3 fixedly connected to the lower surface of the reinforcing block 2, a connecting rod b4 hinged to the end of the connecting rod a3 away from the reinforcing block 2, a positioning ring b5 fixedly connected to the end of the connecting rod b4 away from the connecting rod a3, an angle positioning and pressing component 6 provided on the surface of the right connecting rod a3, and an angle component provided on the surface of the left connecting rod a3; the angle positioning and pressing component 6 is used to make multi-angle adjustments according to the range of motion of the pediatric leg joints and to perform fixed repositioning; the angle component is used to determine the current bending angle of the overall skeleton, which is convenient for medical staff and family members to observe and adjust.

[0025] like Figure 3-6As shown, the angle positioning and clamping assembly 6 includes a rotating rod a601, with a gear a602 fixedly connected to the front end of the rotating rod a601. When the rotating rod a601 rotates, it drives the gear a602 to rotate synchronously. A rotating disk 604 is rotatably connected to the inner wall of the positioning ring a1. A groove is formed on one side of the surface of the rotating disk 604, and a toothed block 603 is fixedly connected to the side wall of the groove of the rotating disk 604. The gear a602 meshes with the toothed block 603. The meshing between the two causes the rotating rod a601 to drive the gear a602 to rotate synchronously when it rotates. The meshing teeth 603 cause the rotating disk 604 to rotate synchronously inside the positioning rings a1 and b5. A pressure plate 608 is slidably connected through the inner sidewall of the positioning ring a1. The pressure plate 608 contacts and supports the child's knees and other areas. A protruding rod 607 is fixedly connected to the surface of the pressure plate 608. A groove is formed on the surface of the rotating disk 604, and the protruding rod 607 is slidably connected through and to the inner sidewall of the groove. When the rotating disk 604 rotates, it drives three sets of... The inclined groove rotates synchronously, allowing the three sets of protruding rods 607 to slide within the inclined groove. Simultaneously, guided by the clamping plate 608 and the rotating rod a601, the clamping plate 608 extends outwards in a straight line, contacting the upper or lower end of the child's knee or other repositioning area. The rotating rod a601 passes through and is rotatably connected to the inner sidewall of the positioning ring a1. A universal joint 611 is fixedly connected to the center of the rotating rod a601 surface. The universal joint 611 ensures that even after the entire connecting rod a3 and connecting rod b4 are hinged and tilted, the rotating rod... a601 rotates, and a reinforcing band 605 is hinged to the top of the rotating disk 604. A connecting block 606 is hinged to the end of the reinforcing band 605 away from the rotating disk 604. Gear a602 is rotatably connected to the inner side wall of the positioning ring a1. The connecting block 606 is fixedly connected to the upper right surface of the positioning ring a1. When the rotating disk 604 rotates, it will drive the reinforcing band 605 to extend to the inner side of the positioning ring a1 or positioning ring b5, thereby tightening the reinforcing band 605 to bind and restrain the upper or lower end of the child's leg, knee, and other repositioning points.

[0026] Furthermore, a bevel gear b614 is fixedly connected to the rotation center shaft of connecting rod b4. A bevel gear a613 meshes with the outer side of bevel gear b614. The rotation of bevel gear a613 causes bevel gear b614 to rotate as a whole, thereby tilting the two sets of connecting rods b4 and their rear positioning ring b5 at an angle. This allows for adjustment of the overall reset support angle according to the different sizes of a child's legs, knees, arms, or legs. A rotating rod b612 is fixedly connected to the center of the rear end of bevel gear a613. Rotating rod b612 passes through and is fixedly connected to gear c620. When gear c620 rotates, it drives rotating rod b612 to rotate synchronously. The outer side of connecting rod a3... A support block 610 is fixedly connected to the side wall. Rotating rod a601 passes through and is rotatably connected to the inner wall of the support block 610. Rotating rod b612 passes through and is rotatably connected to the inner wall of the support block 610. By setting the support block 610, rotating rod b612 and rotating rod a601 are rotatably supported. An adjusting seat 609 is fixedly connected to the outer end of the connecting rod a3 away from the support block 610. Rotating rod a601 passes through and is rotatably connected to the inner wall of the adjusting seat 609. Rotating rod b612 passes through and is rotatably connected to the inner wall of the adjusting seat 609. Both of them pass through the adjusting seat 609, and the adjusting seat 609 also provides rotatable support for rotating rod b612 and rotating rod a601.

[0027] Specifically, gears b619 and c620 are rotatably connected to the inner sidewalls of the adjusting seat 609, respectively. Rotating rod a601 passes through and is fixedly connected to gear b619. When gears c620 and b619 rotate, they drive rotating rods a601 and b612 to rotate synchronously. A lifting screw 615 is rotatably connected to the upper surface of the adjusting seat 609. A sliding plate 616 is threadedly connected to the surface of the lifting screw 615. The threaded engagement between the sliding plate 616 and the lifting screw 615 has self-locking properties. Racks 618 are slidably connected to both sides of the sliding plate 616. The racks 618 only move linearly up and down along the sidewalls of the sliding plate 616. A self-locking screw 617 passes through and is threadedly connected to the inner wall of the rack 618. The two sets of racks 618 mesh with gears b619 and c620 respectively, sliding... In the initial state, the racks 618 on both sides of the plate 616 are locked to the side wall of the sliding plate 616 by the self-locking screw 617. When the sliding plate 616 descends, it will drive the two sets of racks 618 to descend synchronously, thereby driving the two sets of racks 618 to descend synchronously and mesh with gears b619 and c620, so that the rotating rods a601 and b612 rotate synchronously, thus achieving clamping on one side while changing angle. In daily use, the self-locking screw 617 is rotated to disengage from the inner side of the racks 618 and disengage from the sliding plate 616, so that the two sets of racks 618 can move independently. The two sets of racks 618 are connected to the inner side wall of the adjusting seat 609 through and slidingly connected to the inner side wall of the adjusting seat 609. The self-locking screw 617 is in contact with the outer side wall of the sliding plate 616. The threaded engagement between the self-locking screw 617 and the racks 618 has self-locking property.

[0028] like Figure 2 As shown, the angle component includes an indicator block 7, which is fixedly connected to the surface of the left connecting rod a3. A scale 8 is fixedly connected to the rotation center point of the right connecting rod b4. An angle scale is set on the surface of the scale 8. When the two sets of connecting rods b4 are tilted by the angle positioning and pressing component 6, they will drive the scale 8 to rotate synchronously. The indicator block 7 points to the scale on the surface of the scale 8 at the current position. The overall angle opening and closing can be judged according to the scale, so as to intuitively judge and reset the angle for different positions of children's legs, knees, etc.

[0029] Working principle: When in use, first adjust the angle and pressing state of the device according to the child's leg, knee and other repositioning needs. Rotate the lifting screw 615 on the upper surface of the adjusting seat 609. Because the sliding plate 616 and the lifting screw 615 are threadedly engaged and have self-locking properties, the lifting screw 615 drives the sliding plate 616 to descend along the inner side of the adjusting seat 609. The racks 618 on both sides of the sliding plate 616 descend synchronously and mesh with gears b619 and c620 respectively, driving the rotating rods a601 and b612 to rotate synchronously. Rotating rod a601 drives the front gear a602 to rotate via universal joint 611. Gear a602 meshes with the toothed block 603 on the surface of rotating disk 604, causing rotating disk 604 to rotate inside positioning ring a1. The inclined groove of rotating disk 604 drives the protruding rod 607 to slide, causing the clamping plate 608 to extend straight along the inside of positioning ring a1 and contact and support the child's knee and other repositioning points. At the same time, rotating disk 604 pulls the reinforcing strap 605 to tighten, binding and restraining the knee and other repositioning points. Rotating rod b612 drives the rear bevel gear a613 to rotate. Bevel gear a613 meshes with bevel gear b614, causing connecting rod b4 to tilt positioning ring b5 to adapt to the angle of the child's arm or knee. Support block 610 and adjusting seat 609 provide rotational support for rotating rod a601 and rotating rod b612.

[0030] During angle adjustment, the rotation of the right connecting rod b4 causes the scale 8 at its center point to rotate synchronously. The marking block 7 on the surface of the left connecting rod a3 always points to the angle scale on the surface of the scale 8. Medical staff can intuitively judge the overall bending angle of the device through the scale corresponding to the marking block 7, accurately matching the repositioning needs of the child's knee and other parts. If it is necessary to adjust the clamping force or angle separately, rotate the self-locking screw 617 on the inner wall of the rack 618 to disengage it from the outer side wall of the sliding plate 616, releasing the lock between the rack 618 and the sliding plate 616. At this time, a certain set of racks 618 can be pushed up and down to control gear b619 or gear c620 respectively, realizing independent fine adjustment of clamping force and bending angle. The overall operation of the angle positioning and clamping component 6 and the scale display of the angle component ensure the accuracy of the angle and the stability of the fixation during the repositioning of the child's knee and other parts, avoiding displacement of the leg and knee during the repositioning process.

[0031] In the description of this invention, the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only to describe the invention and not to require the invention to be constructed or operated in a specific orientation; therefore, they should not be construed as limitations on the invention. The terms "connected" and "linked" in this invention should be interpreted broadly. For example, they can refer to a connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms based on the specific circumstances.

[0032] The above description represents the preferred mode of operation of the present invention. The specific operational modes are provided solely for a better understanding of the invention's concept. Those skilled in the art can make various improvements or equivalent substitutions based on the principles of this invention, and these improvements or equivalent substitutions are also considered to fall within the scope of protection of this invention.

Claims

1. A pediatric bone precision repositioning device with angle positioning function, comprising a positioning ring a (1), characterized in that: The front end of the positioning ring a (1) is fixedly connected to a reinforcing block (2), and the lower surface of the reinforcing block (2) is fixedly connected to a connecting rod a (3). The end of the connecting rod a (3) away from the reinforcing block (2) is hinged to a connecting rod b (4), and the end of the connecting rod b (4) away from the connecting rod a (3) is fixedly connected to a positioning ring b (5). An angle positioning and clamping component (6) is provided on the surface of the connecting rod a (3) on the right side, and an angle component is provided on the surface of the connecting rod a (3) on the left side. The angle positioning and clamping component (6) is used to make multi-angle adjustments according to the range of motion of the child's leg joints and to fix and reset. The angle component is used to determine the bending angle of the current overall skeleton, so that medical staff and family members can observe and adjust it.

2. The pediatric bone precision repositioning device with angle positioning function according to claim 1, characterized in that: The angle positioning and clamping assembly (6) includes a rotating rod a (601), a gear a (602) is fixedly connected to the front end of the rotating rod a (601), a rotating disk (604) is rotatably connected to the inner wall of the positioning ring a (1), a groove is provided on one side of the surface of the rotating disk (604), a tooth block (603) is fixedly connected to the side wall of the groove of the rotating disk (604), a clamping plate (608) is slidably connected to the inner side wall of the positioning ring a (1), a protruding rod (607) is fixedly connected to the surface of the clamping plate (608), a universal joint (611) is fixedly connected to the center of the surface of the rotating rod a (601), a reinforcing band (605) is hinged to the top end of the rotating disk (604), and a connecting block (606) is hinged to the end of the reinforcing band (605) away from the rotating disk (604).

3. The pediatric bone precision repositioning device with angle positioning function according to claim 1, characterized in that: The rotating center axis of the connecting rod b (4) is fixedly connected to a bevel gear b (614), and a bevel gear a (613) meshes with the outer side of the bevel gear b (614). A rotating rod b (612) is fixedly connected to the center of the rear end of the bevel gear a (613). A support block (610) is fixedly connected to the outer side wall of the connecting rod a (3). An adjusting seat (609) is fixedly connected to the outer end of the connecting rod a (3) away from the support block (610). Gear b (619) and gear c (620) are rotatably connected to the inner side wall of the adjusting seat (609). A lifting screw (615) is rotatably connected to the upper surface of the adjusting seat (609). A sliding plate (616) is threadedly connected to the surface of the lifting screw (615). A rack (618) is slidably connected to both sides of the sliding plate (616). A self-locking screw (617) is threadedly connected to the inner wall of the rack (618).

4. The pediatric bone precision repositioning device with angle positioning function according to claim 1, characterized in that: The angle component includes an indicator block (7), which is fixedly connected to the surface of the left connecting rod a (3), and a scale (8) is fixedly connected to the rotation center point of the right connecting rod b (4), with angle scales on the surface of the scale (8).

5. The pediatric bone precision repositioning device with angle positioning function according to claim 2, characterized in that: The connecting rod a (3) is fixedly connected to the front surface of the positioning ring a (1), the gear a (602) is rotatably connected to the inner side wall of the positioning ring a (1), the connecting block (606) is fixedly connected to the upper right surface of the positioning ring a (1), and the gear a (602) meshes with the tooth block (603).

6. The pediatric bone precision repositioning device with angle positioning function according to claim 2, characterized in that: The surface of the rotating disk (604) is provided with an inclined groove, the protruding rod (607) passes through and is slidably connected to the inner side wall of the inclined groove of the rotating disk (604), and the rotating rod a (601) passes through and is rotatably connected to the inner side wall of the positioning ring a (1).

7. The pediatric bone precision repositioning device with angle positioning function according to claim 3, characterized in that: The rotating rod a (601) passes through and is rotatably connected to the inner wall of the adjusting seat (609), and the rotating rod b (612) passes through and is rotatably connected to the inner wall of the adjusting seat (609).

8. The pediatric bone precision repositioning device with angle positioning function according to claim 3, characterized in that: The rotating rod a (601) passes through and is rotatably connected to the inner wall of the support block (610), and the rotating rod b (612) passes through and is rotatably connected to the inner wall of the support block (610).

9. The pediatric bone precision repositioning device with angle positioning function according to claim 3, characterized in that: The rotating rod b (612) passes through and is fixedly connected to the gear c (620), and the rotating rod a (601) passes through and is fixedly connected to the gear b (619).

10. The pediatric bone precision repositioning device with angle positioning function according to claim 3, characterized in that: The two sets of racks (618) mesh with gear b (619) and gear c (620) respectively. The two sets of racks (618) pass through and slide on the inner sidewall of the adjusting seat (609). The self-locking screw (617) contacts the outer sidewall of the sliding plate (616).

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