Regulator for minimally invasive orthopedic fracture reduction

Abstract

The invention relates to the technical field of fracture reduction instruments, in particular to a minimally invasive orthopedic fracture reduction adjuster which comprises a supporting plate, restraint mechanisms are arranged at the four corners of the top face of the supporting plate, each restraint mechanism comprises a moving seat slidably connected with the supporting plate, and a positioning sleeve is fixed to the top of each moving seat. Two rack columns are in meshing transmission in the positioning sleeve, a telescopic assembly is fixed to one end of each rack column, a connecting rod is installed at the end, away from the corresponding rack column, of each telescopic assembly, and an arc-shaped plate is fixedly installed at one end of each connecting rod. According to the leg restraint device, the restraint mechanisms are arranged on the periphery of the supporting plate, the traction rope is wound and tensioned through the driving mechanism, so that the restraint mechanisms in different directions can move towards the leg direction at the same time, and then the arc-shaped plates on the restraint mechanisms can be clamped and fixed outside the leg; a traditional mode that a plurality of fracture reduction fixing instruments are used for correcting and restraining different positions of the leg is omitted, and the efficiency of leg external correction and restraining is improved.

Description

Technical Field

[0001] This invention relates to the field of fracture reduction devices, specifically an adjuster for minimally invasive orthopedic fracture reduction. Background Technology

[0002] Minimally invasive orthopedics involves using fracture reduction instruments to traction the fracture ends and clamp and correct the proximal and distal ends of the fracture ends without incision or with only a small incision, thereby restoring the normal anatomical structure of the bone and creating favorable conditions for subsequent internal fixation (such as intramedullary nails and plates). When a fracture occurs in the middle of the tibia or femur, due to its strong weight-bearing capacity and tendency to shift, fracture reduction and fixation devices are often used on the lateral side of the lower leg and thigh to restrain the patient's leg. In practice, devices need to be used separately to restrain and fix different positions of the patient's lower leg and thigh. Most fracture reduction and fixation devices cannot simultaneously restrain and fix different positions of the lower leg and thigh to be corrected, thus affecting the efficiency of leg correction and restraint. Furthermore, commonly used fracture reduction and fixation devices have a single function and cannot be fitted with traction pins, Kirschner wires, or other medical devices that assist in reducing broken bones while restraining the limb. Summary of the Invention

[0003] The purpose of this invention is to provide an adjuster for minimally invasive orthopedic fracture reduction, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A minimally invasive orthopedic fracture reduction adjuster includes: pallet; Multiple constraint mechanisms are arranged at the four corners of the pallet. Each constraint mechanism includes a movable seat that is slidably connected to the pallet. A positioning sleeve is fixed on the top of the movable seat. Two rack columns are engaged and driven inside the positioning sleeve. A telescopic component is fixed to one end of each rack column. A connecting rod is installed at one end of the telescopic component. An arc-shaped plate is installed at one end of the connecting rod. Multiple clamping components are selected and installed on the arc plate. The clamping components include two arc blocks that are slidably engaged with the arc plate. Multiple push-out components are selected and installed at one end of the telescopic component. Each push-out component includes a sleeve, and an L-shaped shaft is slidably connected to one end of the sleeve. A drive mechanism is capable of driving multiple restraint mechanisms to constrain legs. The drive mechanism includes multiple guide wheels and a drive block, and a traction rope is connected between the drive block and the multiple guide wheels.

[0005] Furthermore, the positioning sleeve is internally rotatably connected to a gear that is slidably connected to two rack columns, and the rack columns are slidably connected to the positioning sleeve.

[0006] Furthermore, a ball joint is optionally installed between the connecting rod and the arc-shaped plate, and two bolts are installed and fixed between the two arc-shaped blocks.

[0007] Furthermore, each of the four corners of the top surface of the tray is provided with a sliding connection slot for the corresponding movable seat, and a positioning block is fixed on the top surface of the tray near the slot to fix the position of the movable seat.

[0008] Furthermore, a positioning post is fixed to the outside of the movable seat, and a nut is screwed into one end of the positioning post through the positioning block.

[0009] Furthermore, the telescopic assembly includes a tubular component fixedly connected to a rack column, one end of which is screwed with a stud, and the connecting rod is detachably sleeved and fixed to the stud.

[0010] Furthermore, a second nut is screwed onto the outside of the stud, and a circular block is screwed onto one end of the stud.

[0011] Furthermore, the sleeve is screwed into the circular block, a compression spring is fixed between the sleeve and the L-shaped shaft, and a scale mark is provided on the outer side of the L-shaped shaft.

[0012] Furthermore, the traction rope is a closed loop with both ends fixed, and a winding wheel is fixedly connected to the top of the drive block, with the traction rope wound around the outside of the winding wheel.

[0013] Furthermore, the guide wheel is rotatably connected to the corresponding movable seat, and a lead screw is screwed into the middle of the drive block, with one end of the lead screw rotatably connected to the support plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. By slidingly installing constraint mechanisms at the four corners of the support plate, each constraint mechanism is rotatably connected to a guide wheel. A closed-loop traction rope is driven and locked between multiple guide wheels, and the traction rope is wound around the winding wheel. When it is necessary to correct and constrain the thigh and calf on the support plate, the traction rope is manually wound onto the winding wheel. The traction rope pulls multiple guide wheels towards the leg, so that the arc plates on multiple constraint mechanisms can be clamped on the outside of the thigh and calf respectively. After manually winding the traction rope onto the winding wheel to the maximum extent, the screw is rotated to make the drive block move the winding wheel away from the leg. The movement of the winding wheel further tensions the traction rope, so that the guide wheel brings the constraint mechanism closer to the leg. This allows the arc plates on multiple constraint mechanisms to simultaneously correct and constrain different positions of the thigh and calf, which helps to improve the efficiency of leg correction and constraint.

[0015] 2. A gear is rotatably connected to the movable seat of the restraint mechanism. Both sides of the gear are meshed with rack columns. One end of the rack column is fixed with an arc-shaped plate through a telescopic component. As the traction rope drives the movable seat and the entire restraint mechanism to move towards the leg, due to the different thicknesses of the leg at different positions, one arc-shaped plate will first abut against the thicker part of the leg. The rack column connected to this arc-shaped plate will drive the gear to rotate under the reverse thrust of the leg. The rotation of the gear will take another rack column to move towards the thinner part of the leg. At the same time, under the combined action of the movable seat and the rack column moving towards the leg, the two arc-shaped plates on the same restraint mechanism can quickly adapt to the thickness of the leg and automatically abut and clamp the leg. Similarly, multiple arc-shaped plates on multiple restraint mechanisms can adapt to the thickness of the leg and quickly cooperate to clamp the leg. This eliminates the need for the traditional operation of adjusting the size of the fracture reduction and fixation device separately for different positions of the leg to restrain different positions of the leg, improving the convenience of leg correction restraint.

[0016] 3. By sliding two arc-shaped blocks on the inner side of the arc-shaped plate, the two arc-shaped blocks can clamp and fix the end of the Kirschner wire away from the leg. Specifically, one of the arc-shaped plates on the same constraint mechanism can be used to hold the end of the Jacket wire, while the other arc-shaped plate continues to clamp and fix the leg. When there are many Kirschner wires being treated, both arc-shaped plates can be used to hold Jacket wires, so that the constraint mechanism can also accommodate the Jacket wires during the correction of the constrained leg, enriching the function of the fracture reduction adjuster. In addition, the arc-shaped blocks are arc-shaped, which can clamp Kirschner wires in different positions around the fixed leg.

[0017] 4. By installing an external push component on the telescopic assembly at the lower leg position, the entire external push component can be adjusted so that the L-shaped shaft on the telescopic assembly can contact the traction pin of the calcaneus. Specifically, the two L-shaped shafts abut against the two ends of the traction pin respectively. Then, the length of the telescopic assembly can be extended further. The longer the telescopic assembly is extended, the greater the elastic force applied to the L-shaped shaft by the compression spring inside the sleeve, thereby controlling the force of the external push traction pin and meeting the different needs of different patients for the tension of the calcaneus traction pin. Traditionally, the use of ropes and guide wheels to tension the traction pin is limited to use in the hospital bed. This application uses an external push component to push the traction pin, which can be converted into the use of ropes and guide wheels to tension the traction pin during the patient transfer treatment, meeting the emergency needs of fracture patients during transfer. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the invention. Figure 2 ; Figure 3 This is a schematic diagram of the constraint mechanism structure in this invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the stud and circular block in this invention. Figure 5 This is a schematic diagram of the arc-shaped plate and clamping assembly structure in this invention; Figure 6 This is a schematic diagram of the extrapolation component structure in this invention; Figure 7 This is a schematic diagram of the pallet and drive mechanism structure in this invention; Figure 8 This is a schematic diagram of the arc-shaped plate-mounted jacket needle structure in this invention; Figure 9 This is a schematic diagram of the L-shaped shaft external push-pull traction needle structure in this invention.

[0019] In the diagram: 100, support plate; 110, positioning block; 200, constraint mechanism; 210, moving seat; 211, positioning post; 220, positioning sleeve; 221, gear; 230, rack and pinion; 240, telescopic assembly; 241, pipe fitting; 242, stud; 243, nut one; 244, nut two; 245, circular block; 250, connecting rod; 251, ball hinge; 260, arc plate; 300, clamping assembly; 310, arc block; 311, rubber block; 320, bolt; 400, push assembly; 410, sleeve; 411, compression spring; 420, L-shaped shaft; 500, drive mechanism; 510, guide wheel; 520, drive block; 521, winding wheel; 530, traction rope; 540, lead screw. Detailed Implementation

[0020] 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.

[0021] Example 1, please refer to Figure 1 - Figure 9In this embodiment of the invention, an adjuster for minimally invasive orthopedic fracture reduction includes a support plate 100 for placing the leg. Each of the four corners of the top surface of the support plate 100 is equipped with a restraint mechanism 200, which can correct the leg position. Each restraint mechanism 200 includes a movable seat 210 slidably connected to the support plate 100. A positioning sleeve 220 is fixed to the top of the movable seat 210. Two rack columns 230 mesh internally within the positioning sleeve 220. A telescopic component 240 is fixed to one end of each rack column 230. A connecting rod 250 is installed at the end of the telescopic component 240 opposite to the rack column 230. An arc-shaped plate 260 is fixed to one end of the connecting rod 250. A clamping component 300 can be installed on the outer side of the arc-shaped plate 260, which can stabilize the leg. At the Kirschner wire position, the clamping assembly 300 includes two arc-shaped blocks 310 that are slidably engaged with the arc-shaped plate 260. One end of the telescopic assembly 240 can be fixed with the push-out assembly 400, which can push the calcaneal traction pin away from the leg. The push-out assembly 400 includes a sleeve 410, one end of which is slidably connected to an L-shaped shaft 420. A drive mechanism 500 is provided on the support plate 100. The drive mechanism 500 can drive multiple restraint mechanisms 200 to restrain the leg. The drive mechanism 500 includes multiple guide wheels 510 and a drive block 520. The guide wheels 510 are rotatably connected to the moving seat 210, and the drive block 520 is slidably connected to the support plate 100. A traction rope 530 is transmitted between the drive block 520 and the multiple guide wheels 510.

[0022] Specifically, by arranging restraint mechanisms 200 around the perimeter of the support plate 100, with two restraint mechanisms 200 positioned on either side of the lower leg and two restraint mechanisms 200 positioned on either side of the thigh, when the leg is placed on the support plate 100, the drive mechanism 500 winds and tensions the traction rope 530, allowing the restraint mechanisms 200 in different positions to move simultaneously toward the leg. This enables the arc-shaped plates 260 on the restraint mechanisms 200 to clamp and fix them to the outside of the leg, eliminating the need for the traditional method of using multiple fracture reduction and fixation devices to separately correct and restrain the different parts of the leg. The orientation helps improve the efficiency of external leg correction restraint. At the same time, the two arc-shaped plates 260 on each restraint mechanism 200 are driven by the gear 221 through the rack column 230. When one arc-shaped plate 260 first abuts against the thicker part of the leg, the rack column 230 on the arc-shaped plate 260 will drive the gear 221 to rotate, so that the other rack column 230 carries the other arc-shaped plate 260 to quickly abut against the thinner part of the leg. Thus, the restraint mechanism 200 can automatically adjust the restraint leg according to the thickness of the leg, which helps to improve the convenience of leg restraint.

[0023] By sliding two arc-shaped blocks 310 on the arc-shaped plate 260, when the arc-shaped plate 260 is not performing restraint operations, the arc-shaped blocks 310 on the arc-shaped plate 260 can clamp and fix the end of the Kirschner wire, eliminating the need to use additional adjustment devices to fix the Kirschner wire. By installing an external push assembly 400 on the lower leg position restraint mechanism 200, the external push assembly 400 can push the traction pin of the calcaneus outward, which is convenient to replace external ropes and guide wheels to tension the traction pin during patient transfer treatment, and helps to improve the versatility of the entire orthopedic fracture reduction adjuster.

[0024] like Figure 1 , Figure 3 and Figure 7 As shown, in this embodiment, slots are provided at the four corners of the top surface of the tray 100. A slider that slides and engages with the slots is fixed at the bottom of the movable seat 210. A positioning block 110 that can position and fix the movable seat 210 is fixed at the top surface of the tray 100 near the slots. A positioning post 211 is fixed on the outside of the movable seat 210. A nut is screwed into one end of the positioning post 211 that passes through the positioning block 110.

[0025] In this embodiment, after Kirschner wires are fixed on the arc plate 260 of the constraint mechanism 200, in order to prevent the moving seat 210 of the constraint mechanism 200 with fixed Kirschner wires from moving towards the leg, the positioning block 110 and the positioning post 211 can be used to fix the position of the moving seat 210. This allows the constraint mechanism 200 in a local position to be moved without being tensioned by the traction rope 530, while the constraint mechanism 200 in other positions can continue to be tensioned by the traction rope 530 for correction and constraint operations. This allows the adjuster of this application to perform the constraint leg and the clamping and fixing of Kirschner wires simultaneously without affecting each other.

[0026] In this embodiment, in the initial state, the nut three on the positioning post 211 is loosened away from the positioning block 110. At this time, the movable seat 210 can slide in the slot under the traction of the traction rope 530. When it is necessary to fix the position of the movable seat 210, the nut three is tightened, specifically, the nut three is screwed into place and fixed to the outside of the positioning block 110, thereby fixing the movable seat 210. The positioning block 110 is provided with a hole or slot through which the positioning post 211 slides. Of course, the method of fixing the position of the movable seat 210 in this application is not limited to using the nut three. An existing component electromagnet can also be installed on the bottom surface of the slide groove to energize and fix the slider, thereby fixing the slider and fixing the movable seat 210. The specific method of fixing the movable seat 210 can be flexibly selected.

[0027] In this embodiment, since the constraint mechanisms 200 at different positions can be fixed independently without being pulled and moved by the traction rope 530 of the drive mechanism 500, the movable seat 210 on the constraint mechanism 200 that does not need to perform constraint work can be fixed to the support plate 100 as needed, so that the constraint mechanism 200 at a local position can perform constraint work independently. For example, the movable seats 210 of the two constraint mechanisms 200 near the thigh can be fixed on the support plate 100, leaving only the two constraint mechanisms 200 at the lower leg position to be movable on the support plate 100. This allows the constraint mechanism 200 to complete the constraint of the lower leg only when the drive mechanism 500 tensions the traction rope 530. Similarly, it is also possible to perform constraint work only on the thigh. The various working conditions of the specific constraint leg are not described in detail.

[0028] like Figure 3 As shown, in this embodiment, the positioning sleeve 220 is internally rotatably connected to a gear 221 that is slidably connected to two rack columns 230. The rack column 230 is slidably connected to the positioning sleeve 220, so that the arc plate 260 on one rack column 230 first contacts the leg, and then the rack column 230 drives the gear 221 to rotate, so that the other rack column 230 quickly moves the other arc plate 260 to abut against the leg. Finally, the two arc plates 260 can be staggered to clamp and fix the leg in different positions. The arc plate 260 is designed to be arc-shaped, which helps the arc plate 260 to clamp the leg over a large area. The specific size of the arc plate 260 can be produced according to the needs of use. For example, the size of the arc plate 260 for children can be made smaller, and the size of the arc plate 260 for adults can be made larger. The detailed dimensions are not described in detail here.

[0029] like Figure 3 As shown, in this embodiment, when the arc-shaped plate 260 is used for constraint operations, an arc-shaped plate 260 connected to the connecting rod 250 via an existing ball joint 251 can be selected. This allows the angle of the arc-shaped plate 260 to automatically adjust after it abuts against the leg, ensuring a tight fit between the arc-shaped plate 260 and the leg. For example... Figure 8 The curved plate 260 in regions C and D can clamp the lower leg using the outer curved surface of the lower leg, for example... Figure 9 The arc plate 260 can be rotated and arranged along the axis of the lower leg, thereby meeting the need for the arc plate 260 to constrain the leg in different directions.

[0030] like Figure 4 As shown, in this embodiment, when the arc plate 260 is used to install the jacket pin, the arc plate 260 that is directly fixed to the arc plate 260 by the connecting rod 250 is selected. At this time, the arc plate 260 can stably support the jacket pin on the outside of the leg with the help of the connecting rod 250. The type of arc plate 260 selected for installation on the specific constraint mechanism 200 can be selected according to the usage requirements.

[0031] In this embodiment, a second nut 244 is screwed onto the outside of the stud 242, and a circular block 245 is screwed onto one end of the stud 242. When replacing the arc plate 260, the circular block 245 can be loosened and removed first, and then the connecting rod 250 with the arc plate 260 installed can be sleeved onto the stud 242. Next, the circular block 245 is tightened, and then the second nut 244 is rotated in the direction of the connecting rod 250. This allows the second nut 244 and the circular block 245 to cooperate in clamping and fixing the connecting rod 250 onto the stud 242, thereby realizing the replacement of the arc plate 260 on the stud 242.

[0032] like Figure 3 and Figure 4 As shown, in this embodiment, the telescopic component 240 includes a tube 241 fixedly connected to the rack post 230. One end of the tube 241 is screwed to a stud 242, and a nut 243 is fixed on the stud 242. When it is necessary to adjust the length of the telescopic component 240, the stud 242 can be rotated by the nut 243, thereby causing the stud 242 to be screwed out of the tube 241 or screwed into the tube 241, thereby adjusting the length of the telescopic component 240.

[0033] In this embodiment, the length adjustment of the telescopic component 240 can be performed before the constraint operation. By adjusting the length of the telescopic component 240, the arc plate 260 on the constraint mechanism 200 can be pre-moved to the position to be constrained on the outside of the leg, and then the constraint mechanism 200 can perform the constraint operation, so that the arc plate 260 on the constraint mechanism 200 can be constrained to different positions on the outside of the leg as needed.

[0034] like Figure 5 As shown, in this embodiment, two bolts 320 are installed and fixed between the two arc-shaped blocks 310. A rubber block 311 is fixed to one side of each arc-shaped block 310. Specifically, when installing the Kirschner wire, the arc-shaped plate 260, carrying the two arc-shaped blocks 310, is moved to the end of the Kirschner wire. Then, the bolts 320 are used to centrally clamp and fix one end of the Kirschner wire between the two arc-shaped blocks 310. The rubber block 311 can improve the strength of the arc-shaped blocks 310 in installing the Kirschner wire. The specific dimensions of the arc-shaped blocks 310 can be manufactured as needed to satisfy the requirement of clamping and fixing the end of the Kirschner wire. For example… Figure 8 In region A, the arc-shaped plate 260 uses the arc-shaped block 310 to clamp the Kirschner wires on the leg. The adjacent arc-shaped plate 260 in region B can also continue to be attached to and constrained on one side of the leg, thus combining the fixation of the Kirschner wires with the constraint of the leg.

[0035] like Figure 6As shown, in this embodiment, a stud is fixed to the outer side of the circular block 245, and the sleeve 410 is screwed onto the stud on the circular block 245, thereby enabling the push-out assembly 400 to be installed onto the telescopic assembly 240 of the constraint mechanism 200. A compression spring 411 is fixed between the sleeve 410 and the L-shaped shaft 420, and a scale mark is provided on the outer side of the L-shaped shaft 420. Figure 9 When the L-shaped shaft 420 contacts the traction needle, by adjusting the length of the telescopic component 240, the compression spring 411 can be continuously compressed and the L-shaped shaft 420 can be pressed against the traction needle with greater force. The specific force can be intuitively understood through the scale markings on the L-shaped shaft 420. Specifically, the further the L-shaped shaft 420 retracts into the sleeve 410, the greater the outward pushing force applied to the traction needle.

[0036] like Figure 7 As shown, in this embodiment, the traction rope 530 is a closed loop with both ends fixed. The top of the drive block 520 is fixedly connected to a winding wheel 521. The traction rope 530 is wound around the outside of the winding wheel 521. The traction rope 530 passes through one side of the support plate 100 and is wound onto the winding wheel 521. This allows the leg to not contact the traction rope 530 while the traction rope 530 can be wound up from the direction of the winding wheel 521, so that multiple guide wheels 510 can move towards the leg. The guide wheel 510 is rotatably connected to the corresponding position moving seat 210. The middle of the drive block 520 is screwed with a lead screw 540. One end of the lead screw 540 is rotatably connected to the support plate 100, and the other end of the lead screw 540 is fixed with a handwheel.

[0037] In this embodiment, the driving mechanism 500 drives multiple restraint mechanisms 200 to constrain the leg in two processes. The first process is to initially position the restraint mechanisms 200. This process mainly involves winding the traction rope 530 onto the winding wheel 521 to the maximum extent. The traction rope 530 stretches the multiple restraint mechanisms 200 outside the leg, so that the arc plate 260 on the restraint mechanism 200 contacts the leg. The second process is to complete the restraint operation. This process mainly involves rotating the screw 540 by handwheel to move the driving block 520 outward, which in turn causes the winding wheel 521 to stretch the traction rope 530 outward again, so that the arc plate 260 on the multiple restraint mechanisms 200 can be firmly corrected and restrained on the leg.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An adjuster for minimally invasive orthopedic fracture reduction, characterized in that, include: Pallet (100); Multiple constraint mechanisms (200) are arranged at the four corners of the pallet (100). Each constraint mechanism (200) includes a movable seat (210) that is slidably connected to the pallet (100). A positioning sleeve (220) is fixed on the top of the movable seat (210). Two rack columns (230) mesh and drive inside the positioning sleeve (220). A telescopic component (240) is fixed at one end of the rack column (230). A connecting rod (250) is installed at one end of the telescopic component (240). An arc plate (260) is installed at one end of the connecting rod (250). Multiple clamping assemblies (300) are selected to be mounted on an arc plate (260). Each clamping assembly (300) includes two arc blocks (310) that are slidably engaged with the arc plate (260). Multiple push-out components (400) are selected and installed at one end of the telescopic component (240). Each push-out component (400) includes a sleeve (410) and an L-shaped shaft (420) is slidably connected to one end of the sleeve (410). The drive mechanism (500) is capable of driving multiple restraint mechanisms (200) to restrain the legs. The drive mechanism (500) includes multiple guide wheels (510) and a drive block (520). A traction rope (530) is connected between the drive block (520) and the multiple guide wheels (510).

2. The adjuster for minimally invasive orthopedic fracture reduction according to claim 1, characterized in that, The positioning sleeve (220) has a gear (221) inside that is rotatably connected to two rack columns (230), and the rack columns (230) are slidably connected to the positioning sleeve (220).

3. The adjuster for minimally invasive orthopedic fracture reduction according to claim 1, characterized in that, A ball joint is optionally installed between the connecting rod (250) and the arc plate (260), and two bolts (320) are installed and fixed between the two arc blocks (310).

4. The adjuster for minimally invasive orthopedic fracture reduction according to claim 1, characterized in that, The top surface of the tray (100) has four corners with slots for sliding connection with the corresponding movable seat (210). The top surface of the tray (100) near the slots has a positioning block (110) that can position and fix the movable seat (210).

5. The adjuster for minimally invasive orthopedic fracture reduction according to claim 4, characterized in that, A positioning post (211) is fixed on the outside of the movable seat (210), and a nut is screwed into one end of the positioning post (211) through the positioning block (110).

6. The adjuster for minimally invasive orthopedic fracture reduction according to claim 1, characterized in that, The telescopic assembly (240) includes a tube (241) fixedly connected to the rack post (230), one end of the tube (241) is screwed to a stud (242), and the connecting rod (250) is detachably sleeved and fixed to the stud (242).

7. The adjuster for minimally invasive orthopedic fracture reduction according to claim 6, characterized in that, The stud (242) is screwed to the outside of the nut (244), and a circular block (245) is screwed to one end of the stud (242).

8. The adjuster for minimally invasive orthopedic fracture reduction according to claim 7, characterized in that, The sleeve (410) is screwed into the circular block (245), and a compression spring (411) is fixed between the sleeve (410) and the L-shaped shaft (420). The L-shaped shaft (420) has scale markings on its outer side.

9. The adjuster for minimally invasive orthopedic fracture reduction according to claim 1, characterized in that, The traction rope (530) is a closed loop with fixed ends. The top of the drive block (520) is fixedly connected to the winding wheel (521), and the traction rope (530) is wound around the outside of the winding wheel (521).

10. The adjuster for minimally invasive orthopedic fracture reduction according to claim 9, characterized in that, The guide wheel (510) is rotatably connected to the corresponding position moving seat (210), and the middle of the drive block (520) is screwed with a lead screw (540), one end of which is rotatably connected to the support plate (100).

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