A fracture reduction device

Abstract

The application is suitable for the technical field of medical devices, and provides a fracture reduction device, which comprises a sliding table module, a parallel module, a rotary module and a fixing module. The parallel module comprises a fixed platform, a first moving part, a second moving part, a third moving part, a fourth moving part and a moving platform. The fixed platform is slidably installed on the sliding table module along a first direction, and the fixed platform and the moving platform are spaced apart in a second direction. The first ends of the first moving part, the second moving part, the third moving part and the fourth moving part are movably connected with the fixed platform, and the second ends of the first moving part, the second moving part, the third moving part and the fourth moving part are movably connected with the moving platform. The rotary module is installed on the moving platform. The fixing module is installed on the rotary module and is used for fixing a patient's affected part. Under the cooperation of the sliding table module, the parallel module and the rotary module, the fixing module has six degrees of freedom, and the fracture reduction device provided by the application has higher flexibility.

Description

Technical Field

[0001] This application relates to the field of mechanical equipment technology, and more specifically, to a fracture reduction device. Background Technology

[0002] Pelvic fracture is a serious injury. After a pelvic fracture, the fracture site needs to be reduced and then fixed to achieve a good therapeutic effect. In modern society, pelvic fracture surgery is one of the most complex and difficult fracture surgeries. With the development of technology, orthopedic surgical robots are used in fracture surgery to assist doctors in performing the operation. During the treatment, the orthopedic surgical robot mainly fixes the reduction end to the patient's fracture site, and then drives the reduction end to move through a series of transmission mechanisms to reduce the fracture site.

[0003] The transmission mechanisms in current orthopedic surgical robots are generally divided into two categories: serial transmission mechanisms and parallel transmission mechanisms. However, these two types of transmission mechanisms usually only have three to five degrees of freedom, which means that the repositioning end also only has three to five degrees of freedom. The flexibility of the repositioning end is low, which means that the flexibility of the orthopedic surgical robot is low. Summary of the Invention

[0004] The purpose of this application is to provide a fracture reduction device, which aims to solve the technical problem of low flexibility of orthopedic surgical robots in the prior art.

[0005] To achieve the above objectives, the technical solution adopted in this application is: to provide a fracture reduction device, comprising:

[0006] Slide module;

[0007] A parallel module includes a fixed platform, a first moving part, a second moving part, a third moving part, a fourth moving part, and a moving platform. The fixed platform is slidably mounted on the slide module along a first direction, and the fixed platform and the moving platform are spaced apart in a second direction. The first ends of the first moving part, the second moving part, the third moving part, and the fourth moving part are all movably connected to the fixed platform, and the second ends of the first moving part, the second moving part, the third moving part, and the fourth moving part are all movably connected to the moving platform. Through the movement of the first moving part, the second moving part, the third moving part, and the fourth moving part relative to the fixed platform, the moving platform has two rotational degrees of freedom and two translational degrees of freedom.

[0008] The rotary module is installed on the moving platform;

[0009] A fixed module is installed on the rotary module, the rotary module is used to drive the fixed module to rotate relative to the moving platform, and the fixed module is used to fix the patient's lesion site;

[0010] The first direction and the second direction are set at an angle.

[0011] In one possible design, the first end of the first moving part and the first end of the third moving part are respectively connected to the fixed platform through a revolute joint, the second moving part is connected to the fixed platform through at least two revolute joints with different axial extension directions, and the fourth moving part is also connected to the fixed platform through at least two revolute joints with different axial extension directions.

[0012] The first end and the second end of the first moving part are connected by a sliding joint, the first end and the second end of the second moving part are connected by a sliding joint, the first end and the second end of the third moving part are connected by a sliding joint, and the first end and the second end of the fourth moving part are connected by a sliding joint.

[0013] The first moving part can rotate relative to the fixed platform about a first axis, the second moving part can rotate relative to the fixed platform about a second axis and a third axis respectively, the third moving part can rotate relative to the fixed platform about a fourth axis, and the fourth moving part can rotate relative to the fixed platform about a fifth axis and a sixth axis respectively; the first axis, the second axis, the fourth axis and the fifth axis are parallel, the third axis and the sixth axis are parallel, and the second axis and the third axis are set at an angle, and the fifth axis and the sixth axis are set at an angle.

[0014] In one possible design, the first ends of the first moving part, the first ends of the second moving part, the first ends of the third moving part, and the first ends of the fourth moving part are arranged in a rhomboid pattern on the fixed platform; and / or,

[0015] The second ends of the first moving part, the second moving part, the third moving part, and the fourth moving part are arranged in a rhomboid pattern on the moving platform.

[0016] In one possible design, the slide module includes a first adjustment component and a second adjustment component, wherein the fixed platform is slidably mounted on the second adjustment component along the first direction, and the second adjustment component is slidably mounted on the first adjustment component along the first direction.

[0017] In one possible design, the second adjustment component includes a slide rail that is slidably mounted on the first adjustment component along the first direction, and the fixed platform is slidably mounted on the slide rail along the first direction.

[0018] In one possible design, the second adjustment component further includes a support plate, which includes a first plate and a second plate arranged at an angle. The first plate is mounted on the first adjustment component, and the second plate is connected to the slide rail. A plurality of first reinforcing parts are provided between the first plate and the second plate, and the plurality of first reinforcing parts are spaced apart along the first direction.

[0019] In one possible design, the second adjustment component further includes a second reinforcing portion, which connects adjacent to the first reinforcing portion.

[0020] In one possible design, the first adjustment assembly includes a first drive unit, a first lead screw, and a first sliding unit. The first drive unit is drivenly connected to the first lead screw, and the first sliding unit is slidably mounted on the first lead screw along the first direction. The second adjustment assembly includes a second drive unit, a second lead screw, and a second sliding unit. The second drive unit is mounted on the first sliding unit and drivenly connected to the second lead screw. The second sliding unit is slidably mounted on the second lead screw along the first direction, and the fixed platform is mounted on the second sliding unit.

[0021] The pitch of the thread on the first lead screw is greater than the pitch of the thread on the second lead screw.

[0022] In one possible design, the slide module further includes a locking part for unlocking or locking the first lead screw.

[0023] In one possible design, the fixing module includes a fixing plate, which includes a third plate and a fourth plate arranged at an angle, the third plate and the fourth plate being connected to each other, the third plate being mounted on the rotary module, and the fourth plate having multiple through holes for mounting bone pins.

[0024] The beneficial effects of the fracture reduction device provided in this application are as follows: Compared with the prior art, the fracture reduction device provided in this application, by movably connecting the first, second, third, and fourth moving parts to the fixed platform and the moving platform respectively, gives the moving platform four degrees of freedom (two rotations and two translations). Since the fixed platform is slidably mounted on the sliding module, it has one degree of freedom of movement. After the fixed platform moves, it drives the first, second, third, and fourth moving parts to move synchronously, thus causing the moving platform to move synchronously, giving the moving platform five degrees of freedom (two rotations and three translations). Furthermore, since the rotary module is used to drive the fixed module to rotate relative to the moving platform, the fixed module has six degrees of freedom (three rotations and three translations). Therefore, the fracture reduction device provided in this application has higher flexibility. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, 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 based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram showing the position between the fracture reduction device and the patient according to one embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the fracture reduction device provided in one embodiment of this application from a perspective.

[0028] Figure 3 This is a schematic diagram of the structure of a parallel module of a fracture reduction device provided in one embodiment of this application;

[0029] Figure 4 This is a schematic diagram of the structure of the first moving part in the parallel module of a fracture reduction device provided in one embodiment of this application;

[0030] Figure 5 This is a schematic diagram of the structure of the second moving part in the parallel module of a fracture reduction device provided in one embodiment of this application;

[0031] Figure 6 This is a schematic diagram of the slide module of a fracture reduction device provided in one embodiment of this application;

[0032] Figure 7 This is a schematic diagram of the structure of the second adjustment component in the slide module of a fracture reduction device provided in one embodiment of this application;

[0033] Figure 8 This is a cross-sectional structural schematic diagram of a fracture reduction device provided in one embodiment of this application;

[0034] Figure 9 This is a schematic diagram of the structure of the fixation module of a fracture reduction device provided in one embodiment of this application;

[0035] Figure 10 This is a schematic diagram of the structure of the rotary module of a fracture reduction device provided in one embodiment of this application.

[0036] The details of the reference numerals used in the above figures are as follows:

[0037] 1. Fracture reduction device; 2. Operating table; 3. Patient;

[0038] 100. Slide module; 110. First adjustment component; 111. First drive unit; 112. First lead screw; 113. First sliding part; 120. Second adjustment component; 121. Second drive unit; 122. Second lead screw; 123. Second sliding part; 124. First connecting part; 1241. Slide groove; 125. Second connecting part; 126. Third connecting part; 127. Support plate; 1271. First plate; 1272. Second plate; 1273. First reinforcing part; 1274. Second reinforcing part; 128. Slide rail; 130. Base; 140. Anti-tipping structure; 150. Guide rail; 160. Locking part;

[0039] 200. Parallel module; 201. Hooke's hinge; 202. Flange; 203. Rotating shaft; 204. Support; 205. Linear drive structure; 210. Fixed platform; 211. First mounting surface; 220. First moving part; 230. Second moving part; 240. Third moving part; 250. Fourth moving part; 260. Moving platform; 261. Second mounting surface;

[0040] 300. Rotary module; 310. Third drive unit; 320. Reducer; 330. Rotary unit;

[0041] 400, Fixed module; 410, Fixed plate; 411, Third plate; 412, Fourth plate; 4121, Through hole; 510, First axis; 520, Third axis. Detailed Implementation

[0042] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0043] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0044] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the structure or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0046] Pelvic fracture is a serious injury, mostly caused by direct force compressing the pelvis. It accounts for nearly 3% of all bone injuries. With social development and the increase in traffic accidents and workplace injuries, the incidence of pelvic fractures due to high-energy injuries has significantly increased, with unstable pelvic fractures accounting for approximately 7%-20%, seriously threatening patients' lives. The mortality rate for pelvic fracture patients is between 5% and 30%. Pelvic fractures usually require reduction, followed by fixation of the fracture site to achieve a good therapeutic effect. In today's society, pelvic fracture surgery is one of the most complex and difficult fracture surgeries. During treatment, the surgical approach must first be designed according to the patient's fracture type and displacement, which can be divided into anterior and posterior approaches. Depending on the location, severity, and degree of displacement of the injury, the ilioinguinal approach or the sacroiliac joint posterior approach is chosen. Different surgical approaches involve different internal organs, nerves, blood vessels, etc. In related techniques, the surgical plan is usually formulated based on the patient's preoperative three-dimensional CT scan results, which results in medical staff being exposed to X-rays for a long time and receiving a large amount of radiation.

[0047] With the development of surgical techniques, surgical robots have been applied to assist surgeons in performing procedures. Traditional orthopedic surgeries largely rely on surgeons' mental calculations based on patient CT images and practical experience. Compared to traditional surgical methods, surgical robots can create three-dimensional models based on medical images, register them with the actual lesion and surgical tools, and assist surgeons in navigation-based surgical procedures. This allows for faster and more accurate planning of surgical paths, improving safety and surgical efficiency.

[0048] Orthopedic surgical robots have been developing for decades, bringing significant benefits to patients and healthcare providers. However, their application in fracture reduction remains in its early stages. Currently, orthopedic surgical robots primarily use serial drive mechanisms or parallel drive mechanisms based on the Stewart configuration to drive the reduction end. Serial drive mechanisms typically suffer from low rigidity, inability to withstand large reduction forces, weak pelvic clamping, and large size; while parallel drive mechanisms have limitations such as limited workspace and inconvenient posture adjustment. Furthermore, within a limited space, serial drive mechanisms can only achieve three to five degrees of freedom, and parallel mechanisms can achieve a maximum of five degrees of freedom, resulting in a maximum of five degrees of freedom for the reduction end, thus limiting its flexibility and consequently, the overall flexibility of the orthopedic surgical robot.

[0049] To address the technical problems existing in the aforementioned related technologies, this application provides a fracture reduction device. To illustrate the technical solution described in this application, a detailed description is provided below with reference to specific drawings and embodiments.

[0050] like Figures 1 to 3 As shown, one embodiment of this application provides a fracture reduction device 1, including a sliding table module 100, a parallel module 200, a rotary module 300, and a fixed module 400. The parallel module 200 includes a fixed platform 210, a first moving part 220, a second moving part 230, a third moving part 240, a fourth moving part 250, and a moving platform 260. The fixed platform 210 is slidably mounted on the sliding table module 100 along a first direction, and the fixed platform 210 and the moving platform 260 are spaced apart in a second direction. The first end of the first moving part 220, the first end of the second moving part 230, the first end of the third moving part 240, and the first end of the fourth moving part 250 are all movably connected to the fixed platform 210, and the second end of the first moving part 220, the second end of the second moving part 230, the second end of the third moving part 240, and the second end of the fourth moving part 250 are all movably connected to the moving platform 260. The moving platform 260 has two rotational degrees of freedom and two translational degrees of freedom due to the movement of the first moving part 220, the second moving part 230, the third moving part 240, and the fourth moving part 250 relative to the fixed platform 210. A rotary module 300 is mounted on the moving platform 260, and a fixed module 400 is mounted on the rotary module 300. The rotary module 300 drives the fixed module 400 to rotate relative to the moving platform 260, and the fixed module 400 is used to fix the affected area of ​​the patient 3. The first direction and the second direction are set at an angle.

[0051] In some optional embodiments, the fracture reduction device 1 provided in this application has a first direction, a second direction, and a third direction, which are arranged at angles to each other. Optionally, the first direction, the second direction, and the third direction are arranged perpendicularly to each other, such as... Figure 1 or Figure 2 As shown, the Z arrow indicates the first direction, the X arrow indicates the second direction, and the Y arrow indicates the third direction. Of course, the first, second, and third directions can also be set at any other arbitrary angle. For example, the first and second directions can be set at a 30-degree angle, the second and third directions at a 120-degree angle, and the first and third directions at a 15-degree angle. For ease of description, the following text will use the example of the first, second, and third directions being perpendicular to each other.

[0052] Compared with existing technologies, such as Figure 2 and Figure 3 As shown, the fracture reduction device 1 provided in this embodiment of the application, by movably connecting the first moving part 220, the second moving part 230, the third moving part 240, and the fourth moving part 250 to the fixed platform 210 and the moving platform 260 respectively, allows the moving platform 260 to have four degrees of freedom: two rotations and two translations. Since the fixed platform 210 is slidably mounted on the slide module 100, it has one degree of freedom of movement. After the fixed platform 210 moves, it drives the first moving part 220, the second moving part 230, the third moving part 240, and the fourth moving part 250 to move synchronously, thus causing the moving platform 260 to move synchronously. Therefore, the moving platform 260 has five degrees of freedom: two rotations and three translations. Furthermore, since the rotary module 300 is used to drive the fixed module 400 to rotate relative to the moving platform 260, the fixed module 400 has six degrees of freedom: three rotations and three translations. Therefore, it can be seen that the fracture reduction device 1 provided in this embodiment of the application has higher flexibility. This allows the fixation module 400 to be adjusted to a wider variety of angles and positions, thus enabling the fixation module 400 to be used to fix different parts of the patient 3.

[0053] The fracture reduction device 1 provided in this application embodiment is mainly used for reduction treatment of fractures in the pelvis and limbs of patient 3, such as... Figure 1As shown, the fracture reduction device 1 is located on the side of the operating table 2. The fracture site of the patient 3 on the operating table 2 is fixed by the fixation module 400. Then, the fixation module 400 is driven to move in coordination with the sliding module 100, the parallel module 200, and the rotary module 300, thereby reducing the fracture site of the patient 3. This embodiment of the application achieves six degrees of freedom movement of the fixation module 400 by using a configuration combining series and parallel transmissions. While ensuring high flexibility of the fixation module 400, it also makes the fracture reduction device 1 provided in this embodiment more compact and occupies less space. It is worth noting that the series drive is mainly achieved by sequentially connecting the slide module 100, the parallel module 200, the rotary module 300, and the fixed module 400. Specifically, the fixed platform 210 of the parallel module 200 is slidably mounted on the slide module 100 along the first direction, thereby realizing the drive connection between the parallel module 200 and the slide module 100; the rotary module 300 is mounted on the moving platform 260, and the rotary module 300 moves synchronously with the moving platform 260, thereby realizing the drive connection between the rotary module 300 and the parallel module 200; the fixed module 400 is mounted on the rotary module 300, and the rotary module 300 drives the fixed module 400 to rotate relative to the moving platform 260, thereby realizing the drive connection between the fixed module 400 and the rotary module 300. In addition, it is worth noting that the parallel drive is mainly achieved by the first moving part 220, the second moving part 230, the third moving part 240 and the fourth moving part 250 in the parallel module 200 being movably connected to the fixed platform 210, and the first moving part 220, the second moving part 230, the third moving part 240 and the fourth moving part 250 being movably connected to the moving platform 260.

[0054] In some optional embodiments, the fracture reduction device 1 provided in this application can be directly installed on the ground. Alternatively, the fracture reduction device 1 can also be installed on the operating table 2 so that the fracture reduction device 1 can move synchronously with the operating table 2. For example, the fracture reduction device 1 can be connected to the side of the operating table 2, or the operating table 2 has a mounting platform on which the fracture reduction device 1 is installed.

[0055] In one possible design, such as Figures 3 to 5As shown, the first end of the first moving part 220 and the first end of the third moving part 240 are respectively connected to the fixed platform 210 via revolute joints. The second moving part 230 is connected to the fixed platform 210 via at least two revolute joints with different axial extension directions. The fourth moving part 250 is also connected to the fixed platform 210 via at least two revolute joints with different axial extension directions. The first and second ends of the first moving part 220, the second and third moving parts 230, the third and fourth moving parts 240, and the fourth moving part 250 are all connected via revolute joints. The first moving part 220 can rotate relative to the fixed platform 210 about the first axis 510. The second moving part 230 can rotate relative to the fixed platform 210 about the second and third axes 520, respectively. The third moving part 240 can rotate relative to the fixed platform 210 about the fourth axis. The fourth moving part 250 can rotate relative to the fixed platform 210 about the fifth and sixth axes, respectively. The first axis 510, the second axis, the fourth axis, and the fifth axis are parallel, and the third axis 520 and the sixth axis are parallel. The second and third axes 520 are set at an angle, and the fifth and sixth axes are also set at an angle. Optionally, the second and third axes 520, and the fifth and sixth axes are each set at 90 degrees, meaning the second and third axes 520 are perpendicular to each other, and the fifth and sixth axes are perpendicular to each other. Alternatively, the second and third axes 520, and the fifth and sixth axes can also be set at other angles. The following explanation will use the example of the second and third axes 520 and the fifth and sixth axes being perpendicular to each other.

[0056] In this configuration, since the first axis 510, second axis, fourth axis, and fifth axis are parallel, their extension directions are the same. Taking the extension direction of the first axis 510, second axis, fourth axis, and fifth axis as direction A, when the first moving part 220, second moving part 230, third moving part 240, and fourth moving part 250 rotate around their respective first axis 510, second axis, fourth axis, and fifth axis, they can drive the moving platform 260 to move relative to the fixed platform 210 in a direction perpendicular to direction A. Since the first end and the second end of the first moving part 220 are connected by a sliding joint, the second end of the first moving part 220 can move towards or away from the first end of the first moving part 220. Similarly, the second ends of the second moving parts 230, third moving part 240, and fourth moving part 250 can also move towards or away from their own first ends. By simultaneously moving the second ends of the first, second, third, and fourth motion units 220, 230, 240, and 250 towards or away from their corresponding first ends, the moving platform 260 can move towards or away from the fixed platform 210. By moving the first end of either the first or third motion unit 240 towards its second end, the moving platform 260 can rotate about an axis perpendicular to the line connecting the second ends of the first and third motion units 220 and 240. Similarly, by moving the second end of either the second or fourth motion unit 250 towards or away from its first end, the moving platform 260 can rotate about an axis perpendicular to the line connecting the second ends of the second and fourth motion units 250. Thus, the moving platform 260 achieves four degrees of freedom: two rotations and two translations.

[0057] Optional, such as Figure 2 As shown, the first axis 510 extends specifically along a first direction, that is, direction A is specifically the first direction. Since the first axis 510, the second axis, the fourth axis, and the fifth axis are arranged parallel to each other, the extending directions of the second axis, the fourth axis, and the fifth axis are also the first direction. In this embodiment, the third axis 520 and the sixth axis extend specifically along a second direction. In this embodiment, when the moving platform 260 moves relative to the fixed platform 210 in a direction perpendicular to direction A, specifically, the moving platform 260 moves relative to the fixed platform 210 in a third direction.

[0058] In some optional embodiments, the first moving part 220 and the third moving part 240 have the same structure, and the revolute joint structure connected to the first end of the first moving part 220 and the first end of the third moving part 240 is also the same. In the embodiments of this application, the revolute joint used may specifically include a hinge. Specifically, taking the connection of the first moving part 220 to the fixed platform 210 via the revolute joint as an example, the hinge includes a rotating shaft 203 and a bearing support 204. The support 204 is mounted on the fixed platform 210, the rotating shaft 203 is mounted on the support 204, and the first end of the first moving part 220 is sleeved on the rotating shaft 203. At least one of the first end of the first moving part 220 and the support 204 can rotate relative to the rotating shaft 203. The axis of the rotating shaft 203 in the revolute joint connected to the first end of the first moving part 220 is the first axis 510, and the axis of the rotating shaft 203 in the revolute joint connected to the first end of the third moving part 240 is the fourth axis.

[0059] In some optional embodiments, the second moving part 230 and the fourth moving part 250 have the same structure, and the structures of the two revolute joints with different extending directions of the axes connected to the first end of the second moving part 230 and the two revolute joints with different extending directions of the axes connected to the first end of the fourth moving part 250 are the same. Taking the two revolute joints with different extending directions of the axes connected to the first end of the second moving part 230 as an example, as follows... Figure 3 and Figure 5 As shown, the first end of the second moving part 230 is connected to the fixed platform 210 via two revolute joints with different axial extension directions, so that the second moving part 230 can rotate relative to the fixed platform 210 about two axes with different extension directions, that is, the second moving part 230 has two rotational degrees of freedom relative to the fixed platform 210. The two revolute joints with different axial extension directions can be implemented by using a Hooke joint 201 or a universal joint. Optionally, the first ends of the second moving part 230 and the fourth moving part 250 are respectively mounted to the fixed platform 210 via Hooke joints 201. One rotation axis of the Hooke joint 201 connected to the first end of the second moving part 230 is the second axis, and the other rotation axis is the third axis 520. One rotation axis of the Hooke joint 201 connected to the first end of the fourth moving part 250 is the fifth axis, and the other rotation axis is the sixth axis.

[0060] When the first moving part 220, the second moving part 230, the third moving part 240, and the fourth moving part 250 move relative to the fixed platform 210 to drive the moving platform 260, the first moving part 220, the second moving part 230, the third moving part 240, and the fourth moving part 250 also move relative to the moving platform 260 to a certain extent. Therefore, in one possible design, the second ends of the first moving part 220, the second moving part 230, the third moving part 240, and the fourth moving part 250 are all connected to the moving platform 260 via ball joints. This arrangement facilitates the movement of the moving platform 260 relative to the respective movements of the first moving part 220, the second moving part 230, the third moving part 240, and the fourth moving part 250 with the moving platform 260.

[0061] In some optional embodiments, the ball joints connected to the second ends of the first moving part 220, the second moving part 230, the third moving part 240, and the fourth moving part 250 have the same structure. Taking the ball joint connected to the second end of the first moving part 220 as an example, optionally, the ball joint includes a Hooke hinge 201 and a flange 202, with the Hooke hinge 201 rotatably connected to the flange 202. The Hooke hinge 201 is connected to either the second end of the first moving part 220 or the moving platform 260, while the flange 202 is connected to the other. Alternatively, the ball joint includes a ball head and a ball seat, with the ball head movably mounted within the ball seat. One of the ball head and the ball seat is connected to the second end of the first moving part 220, and the other is connected to the moving platform 260.

[0062] In some optional embodiments, the sliding pair between the first and second ends of the first moving part 220 includes a linear drive structure 205, which can be a cylinder, hydraulic cylinder, or electric push cylinder, or other structure capable of outputting linear motion. The sliding pairs between the first and second ends of the second moving part 230, the third moving part 240, and the fourth moving part 250 have the same structure, and will not be described again here.

[0063] In the fracture reduction device 1 provided in this application embodiment, both the first moving part 220 and the third moving part 240 are RPS moving parts. Since the first moving part 220 and the third moving part 240 have the same structure, the following description will take the first moving part 220 as an example. R represents a revolute joint, specifically, the first end of the first moving part 220 is connected to the fixed platform 210 through a revolute joint; P represents a prismatic joint, specifically, the first end and the second end of the first moving part 220 are connected through a prismatic joint; S represents a ball joint, specifically, the second end of the first moving part 220 is connected to the moving platform 260 through a ball joint. Both the second motion part 230 and the fourth motion part 250 are UPS motion parts. Since the second motion part 230 and the fourth motion part 250 have the same structure, the following description will take the second motion part 230 as an example. U represents a kinematic pair with two rotational degrees of freedom. Specifically, the first end of the second motion part 230 is connected to the fixed platform 210 through two revolute joints with different axial extension directions, so that the second motion part 230 can rotate relative to the fixed platform 210 around two axes with different extension directions. P represents a prismatic joint. Specifically, the first end and the second end of the second motion part 230 are connected by a prismatic joint. S represents a ball joint. Specifically, the second end of the second motion part 230 is connected to the moving platform 260 through a ball joint.

[0064] In one possible design, the first ends of the first moving part 220, the second moving part 230, the third moving part 240, and the fourth moving part 250 are arranged in a diamond shape on the fixed platform 210. This arrangement allows the first ends of the four moving parts 220, 230, 240, and 250 to be distributed more evenly on the fixed platform 210, resulting in more even force distribution on the fixed platform 210. This makes the fixed platform 210 more stable when moving relative to the slide module 100 along the first direction, and the moving platform 260 also more stable when moving along the first direction with the fixed platform 210. Therefore, this arrangement can improve the smoothness of movement of the moving platform 260 to a certain extent.

[0065] Alternatively, in another possible design, the second ends of the first moving part 220, the second moving part 230, the third moving part 240, and the fourth moving part 250 are arranged in a diamond shape on the moving platform 260. This arrangement allows the second ends of the four moving parts 220, 230, 240, and 250 to be more evenly distributed on the moving platform 260, resulting in more even force distribution on the moving platform 260. Therefore, this arrangement can also improve the smoothness of movement of the moving platform 260 to a certain extent.

[0066] Or, in another possible design, such as Figure 3As shown, the first ends of the first moving part 220, the second moving part 230, the third moving part 240, and the fourth moving part 250 are arranged in a rhomboid pattern on the fixed platform 210, and the second ends of the first moving part 220, the second moving part 230, the third moving part 240, and the fourth moving part 250 are also arranged in a rhomboid pattern on the moving platform 260. This arrangement helps to further improve the smoothness of movement of the moving platform 260.

[0067] It is worth noting that the first ends of the first moving part 220, the second moving part 230, the third moving part 240, and the fourth moving part 250 are arranged in a rhombus shape on the fixed platform 210, specifically meaning that the first ends of the first moving part 220, the second moving part 230, the third moving part 240, and the fourth moving part 250 are respectively located at the four vertices of the rhombus. Similarly, the second ends of the first moving part 220, the second moving part 230, the third moving part 240, and the fourth moving part 250 are arranged in a rhombus shape on the moving platform 260, also specifically meaning that the second ends of the first moving part 220, the second moving part 230, the third moving part 240, and the fourth moving part 250 are respectively located at the four vertices of the rhombus.

[0068] In some optional embodiments, the first and second ends of the first moving part 220 and the first and second ends of the second moving part 230 are both located within a first plane, and the first plane is perpendicular to the first mounting surface 211. In one specific embodiment, the first mounting surface 211 is perpendicular to a second direction. The first ends of the first moving part 220 and the first ends of the third moving part 240 are spaced apart along a third direction, and the first axis 510 and the fourth axis both extend along the first direction, such that the first axis 510 and the fourth axis are both perpendicular to the line connecting the first ends of the first moving part 220 and the first ends of the third moving part 240. Further, the second ends of the first moving part 220 and the second ends of the third moving part 240 are also spaced apart along a third direction, so that the first and second ends of the first moving part 220 and the first and second ends of the second moving part 230 are both located within a first plane, and the first plane is perpendicular to the first mounting surface 211.

[0069] In some alternative embodiments, the first and second ends of the second moving part 230 and the first and second ends of the fourth moving part 250 are both located within a second plane, and the second plane is also perpendicular to the first mounting surface 211. In one specific embodiment, the first mounting surface 211 is perpendicular to the second direction. The first ends of the second moving part 230 and the first ends of the fourth moving part 250 are spaced apart along the first direction, and the second ends of the second moving part 230 and the second ends of the fourth moving part 250 are also spaced apart along the first direction, so that the second plane is parallel to the first direction. The third axis 520 and the sixth axis both extend along the third direction, so that the second plane is perpendicular to the third direction, that is, the second plane is parallel to the first and second directions, thereby achieving the perpendicularity of the second plane to the first mounting surface 211.

[0070] In some optional embodiments, the first ends of the first moving part 220, the second moving part 230, the third moving part 240, and the fourth moving part 250 are coplanar. Optionally, the fixed platform 210 has a first mounting surface 211, and the first ends of the first moving parts 220, 230, 240, and 250 are all mounted on the first mounting surface 211. Alternatively, the first ends of the first moving parts 220, 230, 240, and 250 are located in the same plane, but are respectively mounted on different sides of the fixed platform 210 adjacent to the first mounting surface 211.

[0071] In some optional embodiments, the second ends of the first moving part 220, the second ends of the second moving part 230, the third moving part 240, and the fourth moving part 250 are also coplanar. Optionally, the moving platform 260 has a second mounting surface 261, and the second ends of the first moving part 220, the second ends of the second moving part 230, the third moving part 240, and the fourth moving part 250 are all mounted on the second mounting surface 261. Alternatively, the second ends of the first moving part 220, the second ends of the second moving part 230, the second ends of the third moving part 240, and the second ends of the fourth moving part 250 are located in the same plane, but are respectively mounted on different sides of the moving platform 260 adjacent to the second mounting surface 261.

[0072] In one possible design, such as Figure 6As shown, the sliding module 100 includes a first adjustment component 110 and a second adjustment component 120. The fixed platform 210 is slidably mounted on the second adjustment component 120 along a first direction, and the second adjustment component 120 is slidably mounted on the first adjustment component 110 along the first direction. In this configuration, the first adjustment component 110 drives the second adjustment component 120 to move a first distance along the first direction, thereby causing the parallel module 200 to move a first distance along the first direction, which in turn causes the fixed module 400 to move a first distance along the first direction. Then, the second adjustment component 120 continues to drive the parallel module 200 to move a second distance along the first direction, allowing the fixed module 400 to move a second distance after moving a first distance. This increases the range of movement of the fixed module 400 in the first direction to a certain extent.

[0073] In one possible design, the second adjustment component 120 includes a slide rail 128, which is slidably mounted on the first adjustment component 110 along a first direction. The fixed platform 210 is slidably mounted on the slide rail 128 along the first direction. By providing the slide rail 128, the smoothness of movement of the fixed platform 210 can be improved. In some optional embodiments, the first adjustment component 110 includes a guide rail 150, and the second adjustment component 120 includes a first connecting portion 124. The first connecting portion 124 is provided with a sliding groove 1241, and the guide rail 150 and the sliding groove 1241 are slidably engaged, so that the first connecting portion 124 is slidably mounted on the guide rail 150 along the first direction, thereby realizing that the second adjustment component 120 is slidably mounted on the first adjustment component 110 along the first direction. The slide rail 128 is mounted on the first connecting portion 124. Through the engagement of the guide rail 150 and the sliding groove 1241, the smoothness of movement of the first connecting portion 124 along the first direction can be improved, thereby improving the smoothness of movement of the fixed platform 210 along the first direction.

[0074] In one possible design, there are two slide rails 128, with a fixed platform 210 located between the two slide rails 128. The fixed platform 210 is slidably mounted on the slide rails 128 on both sides along a first direction. This arrangement can further improve the smoothness of movement of the fixed platform 210.

[0075] In one possible design, such as Figure 7As shown, the second adjustment assembly 120 also includes a support plate 127. The support plate 127 includes a first plate 1271 and a second plate 1272 arranged at an angle. The first plate 1271 is mounted on the first adjustment assembly 110, and the second plate 1272 is connected to the slide rail 128. A plurality of first reinforcing parts 1273 are provided between the first plate 1271 and the second plate 1272, and the plurality of first reinforcing parts 1273 are spaced apart along a first direction. The first plate 1271 and the second plate 1272 of the support plate 127 are plate-shaped structures, so the surfaces of the first plate 1271 and the second plate 1272 are usually relatively flat, so as to facilitate connection with the first adjustment assembly 110 and the slide rail 128 respectively. In this way, the slide rail 128 can be mounted on the first adjustment assembly 110. And by setting the first plate 1271 of the support plate 127, the mounting area of ​​the support plate 127 can be made larger, so that the mounting of the slide rail 128 is more stable, and thus the mounting of the fixed platform 210 on the slide rail 128 is more stable. Furthermore, by providing a first reinforcing part 1273 between the first plate 1271 and the second plate 1272, the structural strength of the support plate 127 can be improved, making the installation of the fixed platform 210 more stable. Optionally, the first plate 1271 and the second plate 1272 can be integrally formed, and the included angle between the first plate 1271 and the second plate 1272 can be any angle such as 33 degrees, 76 degrees, 90 degrees, or 120 degrees. Optionally, the first plate 1271 is specifically installed on the first connecting part 124, that is, the first plate 1271 is installed on the guide rail 150 through the first connecting part 124, that is, installed on the first adjusting assembly 110. When there are two slide rails 128, each slide rail 128 is connected to a support plate 127, so there are also two support plates 127. Figure 7 As shown, the first plates 1271 of the two support plates 127 are installed at intervals on the first connecting portion 124, such that the second plates 1272 of the two support plates 127 are distributed at intervals on the first connecting portion 124. Two slide rails 128 are respectively disposed on the opposite sides of the two second plates 1272, and the fixed platform 210 is located between the two slide rails 128. Optionally, a third connecting portion 126 is also provided between the slide rail 128 and the correspondingly installed second plate 1272. The third connecting portion 126 is a plate-shaped structure. By providing the third connecting portion 126, the structural strength of the support plates 127 can be further improved.

[0076] In one possible design, the second adjusting assembly 120 further includes a second reinforcing portion 1274, through which adjacent first reinforcing portions 1273 are connected. This arrangement allows adjacent first reinforcing portions 1273 to be interconnected, further enhancing the structural strength of the support plate 127, thereby making the installation of the first connecting portion 124 more stable. Alternatively, as... Figure 7As shown, the first reinforcing part 1273 is specifically a plate-shaped structure, and the second reinforcing part 1274 is specifically a rod-shaped structure. Each first reinforcing part 1273 is provided with a connecting hole, and the second reinforcing part 1274 passes through the connecting holes on each first reinforcing part 1273 in sequence.

[0077] In some optional embodiments, the second adjustment component 120 further includes a second connecting portion 125125, which is slidably mounted on the slide rail 128 along a first direction. The fixed platform 210 is mounted on the second connecting portion 125125, specifically slidably mounted on the slide rail 128 along the first direction via the second connecting portion 125. Optionally, the second connecting portion 125125 has a plate-like structure, which provides a larger installation area for the fixed platform 210, facilitating its installation. In some optional embodiments, such as... Figure 7 As shown, connecting sliders are provided on both sides of the second connecting part 125125, and the connecting sliders on both sides of the second connecting part 125125 are respectively slidably mounted on the slide rails 128 on both sides of the second connecting part 125125.

[0078] In one alternative embodiment, such as Figure 6As shown, the first adjustment assembly 110 includes a first drive unit 111, a first lead screw 112, and a first sliding part 113. The first drive unit 111 is connected to the first lead screw 112 and is used to drive the first lead screw 112 to rotate. The first sliding part 113 is slidably mounted on the first lead screw 112 along a first direction. The second adjustment assembly 120 includes a second drive unit 121, a second lead screw 122, and a second sliding part 123. The second drive unit 121 is mounted on the first sliding part 113 and is connected to the second lead screw 122. The second drive unit 121 is used to drive the second lead screw 122 to rotate. The second sliding part 123 is interactively mounted on the second lead screw 122 along a first direction. The fixed platform 210 is mounted on the second sliding part 123. The pitch of the thread on the first lead screw 112 is greater than the pitch of the thread on the second lead screw 122. With this configuration, assuming the first drive unit 111 drives the first lead screw 112 to rotate one revolution, the first sliding part 113 moves a third distance along the first direction; the second drive unit 121 drives the second lead screw 122 to rotate one revolution, the second sliding part 123 moves a fourth distance along the second direction. Since the pitch of the thread on the first lead screw 112 is greater than the pitch of the thread on the second lead screw 122, the third distance will be greater than the fourth distance. Therefore, the first adjusting component 110 can quickly drive the second adjusting component 120 to move along the first direction, thereby moving the parallel module 200 along the first direction, so that the fixed module 400 moves quickly along the first direction until the fixed module 400 approaches the accurate position. Then, the second adjusting component 120 drives the fixed module 400 to move more slowly, further bringing the fixed module 400 closer to the accurate position. As can be seen from the above, by making the pitch of the first lead screw 112 greater than the pitch of the second lead screw 122, the fracture reduction device 1 can achieve a faster response speed and higher adjustment accuracy. In some optional embodiments, the first drive unit 111 is a manual drive unit, such as a handwheel; the second drive unit 121 is an electric drive unit, such as a motor, specifically a servo motor or a stepper motor. In some optional embodiments, the first drive unit 111 and the first lead screw 112, and the second drive unit 121 and the second lead screw 122 are respectively connected by couplings.

[0079] In another optional embodiment, the pitch of the second lead screw 122 is greater than the pitch of the first lead screw 112. With this configuration, the fixed module 400 can be quickly driven to move along the first direction via the second adjusting component 120, and then the second adjusting component 120 can be driven to move more slowly along the first direction via the first adjusting component 110. The effect achieved by this configuration is the same as that described above, and will not be repeated here.

[0080] In some alternative implementations, such as Figure 8As shown, the guide rail 150 has a receiving cavity, and at least a portion of the first lead screw 112 is located in the receiving cavity. One end of the first lead screw 112 extends to the outside of the guide rail 150 and is connected to the first drive unit 111 for transmission. One end of the first sliding part 113 is located in the receiving cavity, and the other end is located outside the guide rail 150. The end of the first sliding part 113 located in the receiving cavity is provided with a first threaded hole. The first sliding part 113 is slidably mounted on the first lead screw 112 along a first direction through the first threaded hole. The first connecting part 124 is installed on the first sliding part 113, and the second driving part 121 is installed on the first connecting part 124. Specifically, the second driving part 121 is indirectly installed on the first sliding part 113 through the first connecting part 124. The second lead screw 122 is connected to the second driving part 121. The second sliding part 123 is also provided with a second threaded hole. The second sliding part 123 is sleeved on the second lead screw 122 through the second threaded hole. The second connecting part 125 is connected to the second sliding part 123, and the fixed platform 210 is installed on the second connecting part 125. During operation, the first driving part 111 drives the first lead screw 112 to rotate, thereby driving the first sliding part 113 and the first connecting part 124 installed on the first sliding part 113 to move along the first direction, that is, driving the second adjusting component 120 to move along the first direction, and then driving the parallel module 200, the rotary module 300 and the fixed module 400 to move synchronously along the first direction. The second drive unit 121 drives the second lead screw 122 to rotate, thereby causing the second sliding part 123 to move along the first direction, which in turn causes the second connecting part 125 and the fixed platform 210 installed on the second connecting part 125 to move along the first direction, that is, causes the parallel module 200 to move along the first direction, so as to drive the rotary module 300 and the fixed module 400 to move synchronously along the first direction.

[0081] In one possible design, the slide module 100 further includes a locking part 160, which is used to structurally lock or lock the first lead screw 112. When the first lead screw 112 is locked by the locking part 160, the second adjusting component 120 stops moving in the first direction, thus providing stable support for the second adjusting component 120 in the first direction, thereby providing stable support for the fixed module 400 and improving the load-bearing capacity of the fracture reduction device 1 provided in this application embodiment. In one specific embodiment, the locking part 160 is mounted on the guide rail 150. Specifically, a third threaded hole is provided through the guide rail 150, and the third threaded hole communicates with the receiving cavity. One end of the locking part 160 is provided with an external thread, and the end of the locking part 160 with the external thread extends into the receiving cavity through the third threaded hole and is threadedly engaged with the third threaded hole. Optionally, the first drive part 111 is a handwheel, and the second drive part 121 is a motor. By rotating the locking part 160 forward, it approaches the first lead screw 112. When the end of the locking part 160 extending into the receiving cavity abuts against the first lead screw 112, the first lead screw 112 is locked, thereby locking the first sliding part 113 relative to the first lead screw 112, providing stable support for the second adjusting assembly 120 through the first sliding part 113. By rotating the locking part 160 in the reverse direction, it moves away from the first lead screw 112 until the end of the locking part 160 extending into the receiving cavity separates from the first lead screw 112. The first lead screw 112 is then unlocked, allowing the first driving part 111 to continue driving the first lead screw 112 to rotate, thereby causing the first sliding part 113 to move along the first direction, driving the second adjusting assembly 120, the parallel module 200, the rotary module 300, and the fixed module 400 to move synchronously along the first direction.

[0082] Optionally, the slide module 100 also includes a base 130, which is used for mounting on the ground or operating table 2. A guide rail 150 is mounted on the base 130, and an anti-tipping structure 140 is provided between the guide rail 150 and the base 130. The anti-tipping structure 140 provides a certain support for the guide rail 150, so that the fracture reduction device 1 can be mounted relatively stably on the ground or operating table 2.

[0083] In one possible design, such as Figure 9As shown, the fixation module 400 includes a fixation plate 410, which includes a third plate 411 and a fourth plate 412 arranged at an angle. The third plate 411 and the fourth plate 412 are connected to each other. The third plate 411 is mounted on the rotary module 300. The fourth plate 412 is provided with a plurality of through holes 4121 for mounting bone pins. In some optional embodiments, at least some of the through holes 4121 on the fourth plate 412 are fitted with bone pins for fixing the fracture site of the patient 3. By employing a third plate 411 and a fourth plate 412 arranged at an angle, the fourth plate 412 can be fixed to the fracture site of the patient 3 from the side of the operating table 2. This effectively reduces the exposure of the operator (e.g., medical staff) to C-arm radiation. The C-arm, commonly known in the medical field as "intraoperative CT," enters the scanning area from the side through the opening of the C-arm to scan the patient 3. The fracture reduction device 1 provided in this embodiment reduces the exposure of the operator to C-arm radiation, thus better protecting the operator. Furthermore, this arrangement frees up most of the space above the operating table 2, facilitating surgical operations. Optionally, the third plate 411 and the fourth plate 412 can be arranged at angles of 30 degrees, 73 degrees, 90 degrees, or 120 degrees.

[0084] In one possible design, such as Figure 10 As shown, the rotary module 300 includes a third drive unit 310, a reducer 320, and a rotary unit 330. The third drive unit 310 is connected to the reducer 320, and the reducer 320 is connected to the rotary unit 330. Both the third drive unit 310 and the reducer 320 are mounted on the moving platform 260, and the third plate 411 is specifically mounted on the rotary unit 330. The reducer 320 can reduce the rotational speed output by the third drive unit 310. When the rotational speed output by the third drive unit 310 is transmitted to the fixed module 400 through the reducer 320, the rotational speed of the fixed module 400 is made smoother, which is more suitable for the reduction speed of the fracture and results in better treatment effect. Optionally, the reducer 320 can be a worm gear reducer, and the rotary unit 330 can be a rotary support bearing. Using a rotary support bearing and a worm gear reducer to achieve transmission can improve transmission accuracy and transmission chain stiffness, thereby improving the accuracy and stiffness of the fracture reduction device 1. The third drive unit 310 can be a servo motor. After the servo motor is powered off, it can be locked in the current position by relying on the worm gear. The servo motor has its own absolute value encoder, which can transmit the angle value in real time.

[0085] In this embodiment, with the cooperation of the sliding module 100, the parallel module 200 and the rotary module 300, the fixed module 400 can achieve a load-bearing capacity of 500N, so that the fixed module 400 can provide a reset force of 500N to the patient 3, resulting in a better reset effect.

[0086] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fracture reduction device, characterized in that, include: Slide module; The parallel module includes a fixed platform, a first moving part, a second moving part, a third moving part, a fourth moving part, and a moving platform. The fixed platform is slidably mounted on the slide module along a first direction, and the fixed platform and the moving platform are spaced apart in a second direction. The first ends of the first moving part and the first ends of the third moving part are respectively connected to the fixed platform through revolute joints. The second moving part is connected to the fixed platform through at least two revolute joints with different axial extension directions, and the fourth moving part is also connected to the fixed platform through at least two revolute joints with different axial extension directions. The first ends and the second ends of the first moving part, the second ends and the second ends of the second moving part, the first ends and the second ends of the third moving part, and the first ends and the second ends of the fourth moving part are connected through revolute joints. The first moving part can rotate relative to the fixed platform around a first axis. The moving platform is a linear platform. The second moving part can rotate relative to the fixed platform around a second axis and a third axis, respectively. The third moving part can rotate relative to the fixed platform around a fourth axis, and the fourth moving part can rotate relative to the fixed platform around a fifth axis and a sixth axis, respectively. The first axis, the second axis, the fourth axis, and the fifth axis are parallel, the third axis and the sixth axis are parallel, and the second axis and the third axis are set at an angle, and the fifth axis and the sixth axis are set at an angle. The second ends of the first moving part, the second moving part, the third moving part, and the fourth moving part are all movably connected to the moving platform. Through the movement of the first moving part, the second moving part, the third moving part, and the fourth moving part relative to the fixed platform, the moving platform has two rotational degrees of freedom and two translational degrees of freedom. The rotary module is installed on the moving platform; A fixed module is installed on the rotary module, the rotary module is used to drive the fixed module to rotate relative to the moving platform, and the fixed module is used to fix the patient's lesion site; The first direction and the second direction are set at an angle.

2. The fracture reduction device as described in claim 1, characterized in that, The first ends of the first moving part, the first ends of the second moving part, the first ends of the third moving part, and the first ends of the fourth moving part are arranged in a rhomboid pattern on the fixed platform; and / or, The second ends of the first moving part, the second moving part, the third moving part, and the fourth moving part are arranged in a rhomboid pattern on the moving platform.

3. The fracture reduction device as described in claim 1, characterized in that, The slide module includes a first adjustment component and a second adjustment component. The fixed platform is slidably mounted on the second adjustment component along the first direction, and the second adjustment component is slidably mounted on the first adjustment component along the first direction.

4. The fracture reduction device as described in claim 3, characterized in that, The second adjustment component includes a slide rail, which is slidably mounted on the first adjustment component along the first direction, and the fixed platform is slidably mounted on the slide rail along the first direction.

5. The fracture reduction device as described in claim 4, characterized in that, The second adjustment component further includes a support plate, which includes a first plate and a second plate arranged at an angle. The first plate is mounted on the first adjustment component, and the second plate is connected to the slide rail. A plurality of first reinforcing parts are provided between the first plate and the second plate, and the plurality of first reinforcing parts are spaced apart along the first direction.

6. The fracture reduction device as described in claim 5, characterized in that, The second adjustment component further includes a second reinforcing portion, which connects adjacent first reinforcing portions.

7. The fracture reduction device as described in claim 3, characterized in that, The first adjustment assembly includes a first drive unit, a first lead screw, and a first sliding unit. The first drive unit is drivenly connected to the first lead screw, and the first sliding unit is slidably mounted on the first lead screw along the first direction. The second adjustment assembly includes a second drive unit, a second lead screw, and a second sliding unit. The second drive unit is mounted on the first sliding unit and drivenly connected to the second lead screw. The second sliding unit is slidably mounted on the second lead screw along the first direction, and the fixed platform is mounted on the second sliding unit. The pitch of the thread on the first lead screw is greater than the pitch of the thread on the second lead screw.

8. The fracture reduction device as described in claim 7, characterized in that, The slide module also includes a locking part, which is used to unlock or lock the first lead screw.

9. The fracture reduction device according to any one of claims 1-8, characterized in that, The fixing module includes a fixing plate, which includes a third plate and a fourth plate arranged at an angle. The third plate and the fourth plate are connected to each other. The third plate is installed on the rotary module. The fourth plate is provided with multiple through holes and is used to install bone pins.

Images