Portable lumbar vertebrae reset fixer

Abstract

The application relates to a portable lumbar vertebra resetting fixator, which comprises a lumbar vertebra fixing base body and a clamping assembly. The lumbar vertebra fixing base body has a bearing plane and is provided with a first fixing point and a second fixing point. The clamping assembly comprises a driving mechanism, a first clamping arm and a second clamping arm. The first clamping arm is in transmission connection with a driving end and is pressed against the first fixing point through a guide through groove of the second clamping arm, so that the force direction is consistent with the axis of the lumbar vertebra. The second clamping arm is fixed to the inner side of the driving mechanism, and a second clamping surface at the distal end of the second clamping arm encloses a clamping channel to wrap and clamp the second fixing point. The nested layout of the two clamping arms forms a composite clamping mechanism of 'linear pressure + wrapping locking', directional pressure is provided through the first clamping arm, local stress is dispersed through the second clamping arm, and slipping is prevented, so that the problems of uneven force application and mismatched contact surface of the traditional clamping device are solved, and the accurate resetting and rigid fixing of the lumbar vertebra of a specimen are achieved.

Description

Technical Field

[0001] This application relates to the field of fixation devices, and more particularly to a portable lumbar spine reduction fixation device. Background Technology

[0002] Traditional lumbar spine reduction and fixation devices are mainly used in clinical or specimen lumbar spine reduction procedures. Their core function is to apply directional pressure to the lumbar spine segments through mechanical structures to achieve reduction and fixation. In existing technologies, common fixators often employ rigid supports combined with straps or buckles, achieving lumbar spine positioning through single-point or multi-point clamping. However, such devices often have the following problems during clamping: Firstly, the rigid clamping surface does not conform sufficiently to the lumbar spine's anatomical structure, leading to uneven clamping pressure distribution; secondly, the clamping points are prone to shifting during dynamic reduction, especially in specimen lumbar spine operations, where the lack of biological tissue elastic cushioning further reduces clamping stability. Furthermore, traditional fixators rely on the operator's experience to adjust the clamping force, making it difficult to accurately match the morphological characteristics of different lumbar spine specimens, easily causing reduction deviations or fixation failure.

[0003] To improve clamping stability, existing technologies have proposed several improvement schemes. For example, one existing technology discloses a lumbar spine clamping device that uses a single-sided driven clamping arm in conjunction with an elastic support plate: the drive mechanism pushes the single-sided clamping arm towards the fixed base via screw transmission, and the elastic support plate passively deforms to conform to the lumbar spine surface. Another scheme adopts a double-sided symmetrical clamping arm design, where the two clamping arms move synchronously through a linkage gear, and the clamping surface is covered with a flexible pad to increase friction. In addition, some technologies introduce a multi-point independent adjustment mechanism, which uses multiple micro-drive units to control the position and pressure of the clamping points separately to adapt to the curvature of the lumbar spine. These schemes all attempt to improve clamping stability by optimizing the clamping arm structure or increasing the adjustment dimensions.

[0004] While the above solutions improve clamping stability, significant shortcomings remain. First, the unilateral drive clamping arm relies on the passive deformation of the elastic support plate, resulting in clamping force concentrated in a single direction, failing to provide a comprehensive fixation of the lumbar spine specimen and exhibiting poor lateral stability. Second, although the bilateral symmetrical clamping arms can apply pressure synchronously, the matching degree between the clamping surface and the lumbar spine anatomy is insufficient, especially during specimen handling, where rigid contact can easily lead to local stress concentration, increasing the risk of repositioning displacement. Furthermore, while the multi-point independent adjustment scheme can adapt to complex shapes, it suffers from structural redundancy, cumbersome operation, and the dispersed layout of the micro-drive units results in poor clamping force coordination, making it difficult to achieve dynamic balance across multiple fixation points. Utility Model Content

[0005] The purpose of this application is to provide a portable lumbar spine repositioning and fixation device.

[0006] According to one aspect of this application, a portable lumbar spine reduction and fixation device is provided, comprising:

[0007] A lumbar fixation base has a bearing plane extending in a straight line, and the bearing plane is provided with a first fixation point and a second fixation point distributed at intervals in a straight line direction;

[0008] A clamping assembly, disposed on one side of the lumbar spine fixation base, includes:

[0009] A drive mechanism having a movable drive end;

[0010] The first clamping arm has one end connected to the driving end for transmission, and the other end extends to form a first clamping part, which presses against the first fixing point.

[0011] The second clamping arm is fixed to the driving mechanism and located inside the first clamping arm. The second clamping arm includes an extension portion, and the extension portion has a guide groove. The first clamping arm presses against the first fixing point through the guide groove.

[0012] The distal end of the second clamping arm has a second clamping surface adapted to the anatomical structure of the lumbar spine. The second clamping surface surrounds to form a clamping channel, which is configured to cover and clamp the second fixation point.

[0013] In one specific embodiment, a magnetic structure is provided on the second clamping surface, and the magnetic structure is located on the second fixing point. The magnetic structure includes at least two magnets located at the clamping ends of the second clamping arm, and the two magnets are magnetically engaged to clamp the lumbar fixation base.

[0014] In one specific embodiment, the lumbar fixation base includes a first lumbar vertebra, a second lumbar vertebra, and a third lumbar vertebra arranged sequentially along the extension direction of the lumbar fixation base, and the first fixation point and the second fixation point are located at the second lumbar vertebra, wherein the clamping assembly clamps and fixes the second lumbar vertebra so that the first lumbar vertebra and the second lumbar vertebra are easy to adjust and reposition.

[0015] In one specific embodiment, the driving mechanism includes:

[0016] A driving structure is provided at the driving end, and the first clamping arm is connected to the driving structure in a transmission manner.

[0017] The base has an actuation cavity, the driving structure is located in the driving cavity, and the second clamping arm is fixedly connected to the base.

[0018] In one embodiment, the base extends away from the lumbar fixation body to form a connecting portion, which is fixedly connected to an external component to secure the base.

[0019] In one specific embodiment, the driving structure includes:

[0020] The lead screw assembly is rotatably connected to the first clamping arm. When the lead screw assembly extends in the horizontal direction, the first clamping arm presses against the first fixed point.

[0021] A rotating component passes through the actuating cavity and is threadedly connected to the lead screw assembly, wherein rotating the rotating component causes the lead screw structure to extend or retract along the horizontal plane.

[0022] In one specific embodiment, the lead screw assembly includes:

[0023] A transmission rod, two of which are rotatably connected to the two ends of the rotating component along its length;

[0024] The connector has one end connected to the connection end of the two transmission rods and the other end sleeved on the rotating shaft of the first robotic arm.

[0025] A threaded base is threadedly connected to the rotating component, and the transmission rod is connected to the rotating component via the threaded base.

[0026] In one specific embodiment, when viewed along the extension direction of the lumbar fixation base, the clamping channel matches the cross-sectional shape of the lumbar spine.

[0027] In one specific embodiment, the base is made of plastic.

[0028] In one specific embodiment, the second clamping arm is made of steel.

[0029] This application has the following beneficial effects:

[0030] The first clamping arm is connected to the drive end via a transmission. Its end, via a guide groove in the second clamping arm, precisely presses against the first fixation point. This guide groove defines the movement path of the first clamping arm, ensuring that the direction of force is consistent with the lumbar spine axis and preventing lateral deviation. Simultaneously, the second clamping arm is fixed inside the drive mechanism. Its distal second clamping surface, based on anatomical morphology, forms a wrapping clamping channel, increasing the contact area and improving morphological matching to achieve multi-directional constraint on the second fixation point. The nested arrangement of the two clamping arms allows the power of the drive mechanism to act synchronously on the first and second fixation points, forming a composite clamping mechanism of "linear pressure + wrapping locking." This mechanism provides directional pressure through the active drive of the first clamping arm and disperses local stress and prevents slippage through the anatomically adapted channel of the second clamping arm. Ultimately, this design, through spatial constraints and mechanical synergy between features, solves the problems of poor force dispersion and insufficient stability caused by contact surface mismatch in traditional solutions, making it particularly suitable for the precise reduction and rigid fixation of lumbar spine specimens. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 An axial view of a portable lumbar spine reduction and fixation device;

[0033] Figure 2 Axial view of some parts of a portable lumbar spine reduction and fixation device;

[0034] Figure 3 A side view of a portable lumbar spine reduction and fixation device;

[0035] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0036] Figure 5 A top view of a portable lumbar spine reduction and fixation device;

[0037] Figure 6 for Figure 5 AA (Cross-sectional view);

[0038] Figure 7 This is a left view of the lumbar spine fixation base.

[0039] Explanation of icon numbers:

[0040] 1. Lumbar fixation base; 3. First fixation point; 4. Second fixation point; 5. Clamping assembly; 6. Drive mechanism; 7. Drive end; 8. First clamping arm; 9. First clamping part; 10. Second clamping arm; 12. Guide groove; 13. Second clamping surface; 14. Clamping channel; 16. Magnet; 17. First lumbar vertebra; 18. Second lumbar vertebra; 19. Third lumbar vertebra; 20. Drive structure; 21. Base; 22. Actuating cavity; 23. Connecting part; 24. Screw assembly; 25. Rotating component; 26. Transmission rod; 27. Connecting component; 28. Threaded base; 100. A portable lumbar repositioning and fixation device. Detailed Implementation

[0041] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0042] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0044] Please refer to Figure 1 - Figure 7 One embodiment of this application provides a portable lumbar spine reduction and fixation device 100, comprising:

[0045] The drive mechanism 6 has a movable drive end 7;

[0046] The first clamping arm 8 has one end connected to the driving end 7 and the other end extends to form a first clamping part 9, which presses against the first fixing point 3.

[0047] The second clamping arm 10 is fixed to the driving mechanism 6 and located inside the first clamping arm 8. The second clamping arm 10 includes an extension portion, and the extension portion is provided with a guide groove 12. The first clamping arm 8 is pressed against the first fixing point 3 through the guide groove 12.

[0048] The distal end of the second clamping arm 10 is formed with a second clamping surface 13 adapted to the anatomical structure of the lumbar spine. The second clamping surface 13 surrounds to form a clamping channel 14, which is configured to cover and clamp the second fixation point.

[0049] Furthermore, a portable lumbar spine repositioning and fixation device 100 is characterized by its enhanced clamping stability achieved through the synergistic design of a nested guide structure with double clamping arms and an anatomically adapted clamping channel 14. Specifically, one end of the first clamping arm 8 is connected to the drive end 7 of the drive mechanism 6, and the other end presses against the first fixation point 3 through a guide groove 12 opened in the extension of the second clamping arm 10. The geometric constraint of the guide groove 12 limits the movement trajectory of the first clamping arm 8, ensuring that the force direction is strictly along the lumbar spine axis and avoiding the dispersion of clamping force caused by lateral deviation. The second clamping arm 10 is fixed to the inside of the drive mechanism 6, and its distal second clamping surface 13 forms a covering clamping channel 14 based on the anatomical shape of the lumbar spine. This channel achieves multi-directional constraint on the second fixation point 4 by increasing the contact area and matching the shape of the lumbar spine curvature, covering the lateral and posterior regions of the lumbar spine. The nested arrangement of the first clamping arm 8 and the second clamping arm 10, with the first clamping arm 8 penetrating through the guide groove 12, allows the power of the drive mechanism 6 to act synchronously on the first and second fixing points 4, forming a composite clamping mechanism of "linear pressure + enveloping locking": the active drive of the first clamping arm 8 is precisely transmitted to the first fixing point 3 through the path constraint of the guide groove 12, providing directional pressure; the anatomically adapted channel of the second clamping arm 10 disperses local stress through shape fit and uses its rigid structure to prevent lumbar vertebrae slippage during clamping. The spatial relationship between the two clamping arms, with the second clamping arm 10 fixed on the inner side and the first clamping arm 8 movable on the outer side, further optimizes the balanced distribution of clamping force, avoiding single-point pressure concentration that could damage the lumbar vertebrae of the specimen. This design, through geometric constraints and mechanical synergy between features, solves the problems of force direction deviation, contact surface mismatch, and uneven stress distribution in traditional clamping devices, and is particularly suitable for applications requiring both rigid fixation and anatomical protection during lumbar vertebrae reduction.

[0050] In one specific embodiment, a magnetic structure is provided on the second clamping surface 13, and the magnetic structure is located on the second fixing point 4. The magnetic structure includes at least two magnets 16 located at the clamping ends of the second clamping arm 10, and the two magnets 16 are magnetically engaged with each other to clamp the lumbar fixation base 1.

[0051] Furthermore, the second clamping surface 13 is equipped with a magnetic structure, including at least two magnets 16 located at the clamping ends. The magnets 16 enhance the locking effect of the clamping channel 14 on the second fixing point 4 through magnetic attraction. Specifically, the magnets 16 are symmetrically distributed on the inner contact surface of the clamping channel 14. When the clamping channel 14 is closed, the magnets 16 attract each other to generate an additional clamping force. This magnetic force is superimposed on the mechanical clamping force of the second clamping arm 10, forming a double locking mechanism that effectively prevents micro-displacement of the lumbar spine specimen during repositioning due to vibration or external force interference. The introduction of the magnetic structure optimizes the uniformity of the clamping force: the flexible characteristics of the magnetic attraction can compensate for the small gap between the mechanical clamping surface and the lumbar spine surface, avoiding local stress concentration caused by rigid clamping; at the same time, the rapid adsorption characteristics of the magnets 16 simplify the clamping operation process, achieving stable fit without additional adjustments. The connection between the magnet 16 and the second clamping surface 13, whether embedded or surface-fitted, must ensure that the direction of the magnetic force is consistent with the closing direction of the clamping channel 14, thereby maximizing the gain effect of the magnetic attraction on the clamping stability. This design is especially suitable for complex reset scenarios that require frequent adjustment of the clamping force.

[0052] In one specific embodiment, the lumbar fixation base 1 includes a first lumbar vertebra 17, a second lumbar vertebra 18 and a third lumbar vertebra 19 arranged sequentially along the extension direction of the lumbar fixation base 1, and the first fixation point 3 and the second fixation point 4 are located at the second lumbar vertebra 18. The clamping component 5 clamps and fixes the second lumbar vertebra 18 so that the first lumbar vertebra 17 and the second lumbar vertebra 18 can be easily adjusted and reset.

[0053] Furthermore, the lumbar fixation base 1 is constructed as a multi-segment structure comprising a first lumbar vertebra 17, a second lumbar vertebra 18, and a third lumbar vertebra 19. The first fixation point 3 and the second fixation point 4 are concentrated at the second lumbar vertebra 18. The clamping assembly 5 achieves coordinated control of adjacent segments by clamping the second lumbar vertebra 18. The core of this design lies in utilizing the anatomical location of the second lumbar vertebra 18, typically a mechanical transmission hub in the lumbar spine, as a clamping fulcrum. Through the lever principle, the clamping force is transmitted to the first lumbar vertebra 17 and the third lumbar vertebra 19, thereby reducing the structural complexity caused by directly clamping multiple segments. The spaced distribution of the first fixation point 3 and the second fixation point 4 enhances the clamping stability of the second lumbar vertebra 18, avoiding rotational displacement caused by single-point clamping. Simultaneously, the rigid fixation of the second lumbar vertebra 18 by the clamping assembly 5 provides a stable reference for the repositioning and adjustment of the first and third lumbar vertebrae 19. The operator can achieve overall sequence correction by fine-tuning the positions of adjacent segments. This feature significantly reduces the need for multiple independent clamping mechanisms in multi-segment repositioning operations, improves the portability and operational efficiency of the device, and is suitable for repositioning scenarios of multi-segment pathological specimens such as lumbar spondylolisthesis and scoliosis.

[0054] In one specific embodiment, the drive mechanism 6 includes:

[0055] A drive structure 20 is provided at the drive end 7, and the first clamping arm 8 is connected to the drive structure 20 in a transmission manner.

[0056] The base 21 has an actuation cavity 22, the driving structure 20 is disposed in the driving cavity, and the second clamping arm 10 is fixedly connected to the base 21.

[0057] Furthermore, the specific configuration of the drive mechanism 6 is further defined as including a drive structure 20 and a base 21. The drive structure 20 is located at the drive end 7 and is connected to the first clamping arm 8 in a transmission manner. The base 21 has an actuation cavity 22 to accommodate the drive structure 20, and the second clamping arm 10 is fixedly connected to the base 21. As a support platform for the drive mechanism 6 and the clamping arm, the base 21's actuation cavity 22 is designed to not only provide sealed protection for the drive structure 20, such as a lead screw or gear, but also ensure the linearity of the drive end 7's movement through the guiding effect of the cavity wall. The rigid connection between the second clamping arm 10 and the base 21, such as bolt fixing or integral molding, ensures the structural stability of the clamping channel 14 during the force application process, avoiding overall deformation caused by the action of the drive mechanism 6. The integrated design of the drive structure 20 and the base 21 confines the power transmission path within a closed space, reducing the impact of external interference on clamping accuracy. Simultaneously, the base 21 serves as the mounting reference for the entire device, allowing for precise calibration of the relative positions of the clamping assembly 5 and the lumbar fixation base 1. This unique connection, through spatial isolation and optimized force transmission, achieves controllable output of high-precision clamping force, making it suitable for lumbar spine surgery simulations or teaching scenarios where high reduction stability is required.

[0058] In one embodiment, the base 21 extends away from the lumbar fixation base 1 to form a connecting portion 23, which is fixedly connected to an external component to fix the base 21.

[0059] Furthermore, the base 21 extends away from the lumbar fixation base 1 to form a connecting portion 23, which is fixed to external supports, operating tables, or other components via snaps, threads, or clamps. The extension length and cross-sectional shape of the connecting portion 23 have been optimized through mechanical simulation to provide sufficient bending stiffness with minimal weight, preventing the base 21 from tilting due to leverage during clamping. Its connection interface with external components is designed as an adjustable angle structure, allowing the operator to adjust the spatial posture of the clamping component 5 according to the reset requirements. This feature expands the functional interface of the base 21, upgrading the device from a standalone tool to a modular unit that can be integrated into complex systems, enhancing the overall stability during clamping and expanding the applicability of the device in laboratory or clinical environments.

[0060] In one specific embodiment, the driving structure 20 includes:

[0061] The lead screw assembly 24 is rotatably connected to the first clamping arm 8. When the lead screw assembly 24 extends in the horizontal direction, the first clamping arm 8 presses against the first fixed point 3.

[0062] A rotating component 25 passes through the actuating cavity and is threadedly connected to the lead screw assembly 24, wherein rotating the rotating component 25 causes the lead screw structure to extend or retract along the horizontal plane.

[0063] Furthermore, the drive structure 20 is specifically defined as a lead screw assembly 24 and a rotating component 25. The lead screw assembly 24 is rotatably connected to the first clamping arm 8, and the rotating component 25 passes through the actuation cavity 22 and is threadedly engaged with the lead screw assembly 24. The pitch of the lead screw is precisely calculated to convert the rotational motion of the rotating component 25 into a millimeter-level linear displacement of the first clamping arm 8, achieving fine-tuning control of the clamping force. The handwheel or electric drive end 7 of the rotating component 25 is exposed on the base 21, facilitating the operator to apply torque. The self-locking characteristic of the lead screw drive ensures that the clamping arm maintains a constant position without external force intervention, avoiding clamping force attenuation during the reset process. This feature, through the precise design of the mechanical transmission ratio, converts the operator's input action into a high-precision clamping force output, significantly improving the controllability and repeatability of the clamping process.

[0064] In one specific embodiment, the lead screw assembly 24 includes:

[0065] The two transmission rods 26 are rotatably connected to the two ends of the rotating member 25 along its length.

[0066] The connector 27 is connected at one end to the connection end of the two transmission rods 26, and the other end is sleeved on the rotating shaft of the first robotic arm.

[0067] The threaded base 28 is threadedly connected to the rotating member 25, and the transmission rod 26 is connected to the rotating member 25 via the threaded base 28.

[0068] Furthermore, the lead screw assembly 24 is further refined to include a transmission rod 26, a connector 27, and a threaded base 28. The transmission rod 26 is connected to the rotating component 25 at both ends via universal joints. The connector 27 transmits the linear motion of the transmission rod 26 to the rotation axis of the first clamping arm 8, and the threaded base 28 provides axial positioning for the lead screw assembly 24. This multi-stage transmission design compensates for installation errors through universal joints, ensuring uniform distribution of driving force. The adjustable leverage ratio design of the connector 27 allows for flexible adjustment of the output force according to clamping requirements, while the preload function of the threaded base 28 eliminates transmission backlash and avoids clamping delays caused by idle stroke. This feature, through a modular transmission chain design, achieves efficient conversion of complex motion into precise clamping force.

[0069] In one specific embodiment, when viewed along the extension direction of the lumbar fixation base 1, the clamping channel 14 matches the cross-sectional shape of the lumbar spine.

[0070] Furthermore, the cross-sectional shape of the clamping channel 14 is defined as a biomimetic curved surface fitted to the CT or MRI image data of the target lumbar vertebra, with parameters such as its radius of curvature and contact angle optimized based on a statistical lumbar anatomical database. This design upgrades traditional point or line contact to surface contact by maximizing the contact area between the clamping surface and the lumbar vertebral surface, ensuring that the clamping force is evenly distributed on the bony prominences and pedicle regions on the sides of the lumbar vertebra. This reduces local pressure to avoid bone damage and prevents lateral slippage by increasing the friction area. This feature integrates biomechanical principles into mechanical design, significantly improving the adaptability of the clamping device to individual anatomical differences.

[0071] In one specific embodiment, the base 21 is made of plastic.

[0072] Furthermore, its lightweight characteristics reduce the overall weight of the device by more than 40%, making it easy to operate or carry with one hand; at the same time, the damping properties of the plastic can absorb the vibrations generated by the drive mechanism 6, avoiding high-frequency micro-vibrations from interfering with the clamping stability. The material selection takes into account both strength and biocompatibility, making it suitable for long-term contact with specimens or teaching demonstration scenarios.

[0073] In one specific embodiment, the second clamping arm 10 is made of steel.

[0074] Furthermore, the second clamping arm 10 is made of medical-grade stainless steel or titanium alloy, whose high yield strength ensures that the clamping channel 14 does not undergo plastic deformation during repeated use, while surface polishing or coating reduces frictional wear with the lumbar spine specimen. The selection of rigid materials allows the clamping arm to serve as a mechanical transmission skeleton, forming a rigid-flexible composite structure with the plastic base 21, thereby improving the overall durability and reliability of the device.

[0075] The embodiments described above are merely examples of several implementations of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the scope of protection of this application.

Claims

1. A portable lumbar spine repositioning and fixation device, characterized in that, include: A lumbar fixation base has a bearing plane extending in a straight line, and the bearing plane is provided with a first fixation point and a second fixation point distributed at intervals in a straight line direction; A clamping assembly, disposed on one side of the lumbar spine fixation base, includes: A drive mechanism having a movable drive end; The first clamping arm has one end connected to the driving end for transmission, and the other end extends to form a first clamping part, which presses against the first fixing point. The second clamping arm is fixed to the driving mechanism and located inside the first clamping arm. The second clamping arm includes an extension portion, and the extension portion has a guide groove. The first clamping arm presses against the first fixing point through the guide groove. The distal end of the second clamping arm has a second clamping surface adapted to the anatomical structure of the lumbar spine. The second clamping surface surrounds to form a clamping channel, which is configured to cover and clamp the second fixation point.

2. The portable lumbar spine reduction and fixation device according to claim 1, characterized in that, The second clamping surface is provided with a magnetic structure, and the magnetic structure is located at the second fixing point. The magnetic structure includes at least two magnets located at the clamping ends of the second clamping arm, and the two magnets are magnetically engaged to clamp the lumbar fixation base.

3. The portable lumbar spine reduction and fixation device according to claim 1, characterized in that, The lumbar fixation base includes a first lumbar vertebra, a second lumbar vertebra, and a third lumbar vertebra arranged sequentially along the extension direction of the lumbar fixation base, and the first fixation point and the second fixation point are located at the second lumbar vertebra. The clamping assembly clamps and fixes the second lumbar vertebra so that the first lumbar vertebra and the second lumbar vertebra can be easily adjusted and repositioned.

4. The portable lumbar spine repositioning and fixation device according to claim 1, characterized in that, The drive mechanism includes: A driving structure is provided at the driving end, and the first clamping arm is connected to the driving structure in a transmission manner. The base has an actuation cavity, the driving structure is located in the actuation cavity, and the second clamping arm is fixedly connected to the base.

5. A portable lumbar spine repositioning and fixation device according to claim 4, characterized in that, The base extends away from the lumbar fixation body to form a connection portion, which is fixedly connected to an external component to secure the base.

6. A portable lumbar spine repositioning and fixation device according to claim 5, characterized in that, The driving structure includes: The lead screw assembly is rotatably connected to the first clamping arm. When the lead screw assembly extends in the horizontal direction, the first clamping arm presses against the first fixed point. A rotating component passes through the actuating cavity and is threadedly connected to the lead screw assembly, wherein rotating the rotating component causes the lead screw assembly to extend or retract along a horizontal plane.

7. A portable lumbar spine repositioning and fixation device according to claim 6, characterized in that, The lead screw assembly includes: A transmission rod, two of which are rotatably connected to the two ends of the rotating component along its length; The connector has one end connected to the connection end of the two transmission rods and the other end sleeved on the rotating shaft of the first clamping arm. A threaded base is threadedly connected to the rotating component, and the transmission rod is connected to the rotating component via the threaded base.

8. A portable lumbar spine repositioning and fixation device according to claim 1, characterized in that, When viewed along the extension direction of the lumbar fixation base, the clamping channel matches the cross-sectional shape of the lumbar spine.

9. A portable lumbar spine repositioning and fixation device according to claim 4, characterized in that, The base is made of plastic.

10. A portable lumbar spine reduction and fixation device according to claim 1, characterized in that, The second clamping arm is made of steel.

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