A micro-incision fracture reduction and fixation device
The design of the micro-incision fracture reduction and fixation device utilizes motor and gear transmission to achieve precise reduction and fixation of the fracture ends, solving the problems of large incisions, cumbersome operation, and high reduction difficulty in existing technologies, thereby improving surgical efficiency and patient comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- PEOPLES HOSPITAL PEKING UNIV
- Filing Date
- 2023-06-09
- Publication Date
- 2026-07-21
AI Technical Summary
Current fracture surgeries involve large incisions, complicated procedures, difficult reduction, and poor fixation results. They also require frequent fluoroscopy, which increases surgical time and patient discomfort.
The micro-incision fracture reduction and fixation device includes a housing, a linkage assembly, an axial rotation drive mechanism, a transverse bone screw clamp, a clamp transverse movement drive mechanism, a rotating bone screw clamp, and a tangential rotation drive mechanism. It achieves precise reduction and fixation of the fracture ends through motor and gear transmission.
It achieves small incisions, simple operation, precise repositioning and good fixation, shortens operation time and reduces patient suffering.
Smart Images
Figure CN116725645B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical device technology, and in particular to a micro-incision fracture reduction and fixation device. Background Technology
[0002] Fracture reduction is the first and crucial step in surgical treatment of bone trauma, restoring the fractured and displaced bone to its normal anatomical position. Its effectiveness directly impacts the surgical outcome and postoperative recovery. Successful fracture reduction is primarily reflected in two aspects: anatomical reduction, restoring the bone's normal anatomical shape and physiological function; and minimizing soft tissue damage and radiation exposure for both the patient and surgeon during the reduction process.
[0003] Currently, fracture reduction surgery requires manual reduction and fixation by the surgeon and assistant, which has drawbacks such as large incisions, cumbersome procedures, high reduction difficulty, and poor fixation results. Furthermore, continuous fluoroscopy is necessary during the process to ensure the reduction is effective. This increases surgical time and consequently, patient discomfort. Summary of the Invention
[0004] The purpose of this invention is to address the shortcomings of the prior art by providing a micro-incision fracture reduction and fixation device that can assist surgeons in accurately reducing and fixing fractures during fracture surgery. This device has advantages such as small incision, simple operation, accurate reduction, and good fixation effect.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A micro-incision fracture reduction and fixation device, comprising: chassis; A linkage assembly, comprising a first link, an intermediate link, and a second link, wherein the first link is connected to one end of the intermediate link via a universal joint, the end of the first link away from the intermediate link is connected to the housing, and the second link is connected to the other end of the intermediate link and is rotatable about its axis. An axial rotation drive mechanism is provided for driving the second connecting rod to rotate about its axis. A transverse bone screw clamp is disposed on the first connecting rod and is movable along the axial direction of the first connecting rod. A clamping block lateral movement drive mechanism is used to drive the lateral movement bone screw clamping block to move axially along the first connecting rod. A rotating bone screw clamp, wherein the rotating bone screw clamp is rotatably mounted on the second connecting rod; A clamping block rotation drive mechanism is used to drive the rotating bone screw clamping block to rotate. A tangential rotation drive mechanism is used to drive the intermediate connecting rod and the second connecting rod to rotate along a horizontal or vertical plane; A control circuit board is disposed on the housing and is electrically connected to the axial rotation drive mechanism, the clamping block lateral movement drive mechanism, the clamping block rotation drive mechanism and the tangential rotation drive mechanism respectively.
[0006] Preferably, the axial rotation drive mechanism includes an axial rotation drive motor, a first universal joint, a first bevel gear, and a second bevel gear. The axial rotation drive motor is mounted on the housing and electrically connected to the control circuit board. The axial rotation drive motor is drively connected to one end of the first universal joint. The intermediate connecting rod has a hollow cavity. The other end of the first universal joint extends into the hollow cavity. One end of the second connecting rod extends into the hollow cavity. The first bevel gear and the second bevel gear are respectively mounted on the ends of the second connecting rod and the first universal joint that extend into the hollow cavity. The first bevel gear meshes with the second bevel gear.
[0007] Preferably, the clamping block lateral movement drive mechanism includes a transmission screw, a nut slider, and a lateral movement drive motor. The first connecting rod has a slide groove arranged along its axial direction. The transmission screw is rotatably disposed in the slide groove. The transmission screw nut is slidably disposed in the slide groove and screwed onto the transmission screw. The lateral movement drive motor is drivenly connected to the transmission screw. The lateral movement drive motor is disposed on the housing and electrically connected to the control circuit board.
[0008] Preferably, the clamping block rotation drive mechanism includes a drive gear, a third bevel gear, a fourth bevel gear, a second universal joint, and a clamping block rotation drive motor. The rotating bone screw clamping block has a straight tooth section. The drive gear is disposed on the second connecting rod and meshes with the straight tooth section. The third bevel gear is disposed inside the second connecting rod and coaxially connected to the drive gear. The fourth bevel gear is disposed at one end of the second universal joint and meshes with the third bevel gear. The clamping block rotation drive motor is drively connected to the other end of the second universal joint. The clamping block rotation drive motor is disposed on the housing and electrically connected to the control circuit board.
[0009] Preferably, the tangential rotation drive mechanism includes a connecting block, a first connecting rod, a second connecting rod, a first drive block, a first lead screw, a first motor, a second drive block, a second lead screw, and a second motor. The connecting block is fixedly connected to the end of the second connecting rod away from the intermediate connecting rod. The first connecting rod is connected to the connecting block and parallel to the horizontal plane. The second connecting rod is connected to the connecting block and parallel to the vertical plane. The first drive block is movably sleeved on the first connecting rod and threaded onto the first lead screw. The first lead screw is parallel to the vertical plane. The first motor is drively connected to the first lead screw. The second drive block is movably sleeved on the second connecting rod and threaded onto the second lead screw. The second lead screw is parallel to the horizontal plane. The second motor is drively connected to the second lead screw. The first motor and the second motor are mounted on the housing and are electrically connected to the control circuit board, respectively.
[0010] Preferably, the system further includes a controller, which is remotely connected to the control circuit board. The controller is adapted to control the axial rotation drive mechanism, the clamping block lateral movement drive mechanism, the clamping block rotation drive mechanism, and the tangential rotation drive mechanism through the control circuit board.
[0011] Preferably, the controller is a remote control.
[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: In use, this invention uses transverse and rotating bone screw clamps to hold and fix the implanted bone screw at the patient's fracture site. Then, through various drive mechanisms, it achieves elongation, compression, and axial or tangential rotation of the fracture ends, assisting the surgeon in precisely reducing and fixing the fracture site during fracture surgery. Compared with existing technologies, this invention has advantages such as smaller incisions, simpler operation, more precise reduction, and better fixation, which can shorten operation time to a certain extent, reduce patient pain during surgery, and provide a new solution for fracture treatment. Attached Figure Description
[0013] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. It should be noted that in all the drawings, the elements or parts are not necessarily drawn to actual scale.
[0014] Figure 1 This is a schematic diagram of the overall structure of the micro-incision fracture reduction and fixation device described in an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall structure of the micro-incision fracture reduction and fixation device described in this embodiment of the invention (with the casing removed). Figure 3This is a schematic diagram of the overall structure of the axial rotation drive mechanism of the micro-incision fracture reduction and fixation device described in this embodiment of the invention; Figure 4 This is a schematic diagram of the overall structure of the clamping block rotation drive mechanism of the micro-incision fracture reduction and fixation device described in this embodiment of the invention; Figure 5 This is a schematic diagram of the overall structure of the connecting rod assembly of the micro-incision fracture reduction and fixation device described in this embodiment of the invention.
[0015] In the picture: 1. Housing; 2. Linkage assembly; 21. First link; 211. Slide groove; 22. Intermediate link; 221. Hollow cavity; 23. Second link; 3. Axial rotation drive mechanism; 31. Axial rotation drive motor; 32. First universal joint; 33. First bevel gear; 34. Second bevel gear; 4. Lateral bone screw clamp; 5. Clamp lateral movement drive mechanism; 51. Transmission screw; 52. Nut slider; 53. Lateral movement drive motor; 6. Rotating bone screw clamp; 6 1. Straight tooth section; 7. Clamping block rotation drive mechanism; 71. Drive gear; 72. Third bevel gear; 73. Fourth bevel gear; 74. Second universal joint; 75. Clamping block rotation drive motor; 8. Tangential rotation drive mechanism; 81. Connecting block; 82. First connecting rod; 83. Second connecting rod; 84. First drive block; 85. First lead screw; 86. First motor; 87. Second drive block; 88. Second lead screw; 89. Second motor; 9. Control circuit board. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.
[0017] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the system or component 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 the invention. Furthermore, the use of terms such as "first" and "second" to define components is merely for the convenience of distinguishing the aforementioned components. Unless otherwise stated, these terms have no special meaning and should not be construed as indicating or implying relative importance.
[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0019] Currently, fracture reduction surgery requires manual reduction and fixation by the surgeon and assistant, which has drawbacks such as large incisions, cumbersome operation, high reduction difficulty, and poor fixation effect. Furthermore, continuous fluoroscopy is necessary during this process to ensure the reduction effect. This increases surgical time and thus patient discomfort. Therefore, this invention provides a micro-incision fracture reduction and fixation device that assists the surgeon in precisely reducing and fixing the fracture site during fracture surgery, offering advantages such as small incisions, simple operation, accurate reduction, and good fixation effect.
[0020] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the invention and to fully convey the scope of the invention to those skilled in the art.
[0021] like Figures 1-5 As shown, an embodiment of the present invention provides a micro-incision fracture reduction and fixation device, comprising: Casing 1; Linkage assembly 2 includes a first link 21, an intermediate link 22, and a second link 23. The first link 21 is connected to one end of the intermediate link 22 via a universal joint. The end of the first link 21 away from the intermediate link 22 is connected to the housing 1. The second link 23 is connected to the other end of the intermediate link 22 and can rotate around its axis. Axial rotation drive mechanism 3 is used to drive the second link 23 to rotate about its axis. Transverse bone screw clamp 4 is mounted on the first connecting rod 21 and can move axially along the first connecting rod 21. The clamping block transverse movement drive mechanism 5 is used to drive the transverse bone screw clamping block 4 to move axially along the first connecting rod 21. Rotating bone screw clamp 6, which is rotatably mounted on the second connecting rod 23; The clamping block rotation drive mechanism 7 is used to drive the rotating bone screw clamping block 6 to rotate. Tangential rotation drive mechanism 8 is used to drive the intermediate connecting rod 22 and the second connecting rod 23 to rotate along the horizontal or vertical plane. The control circuit board 9 is mounted on the housing 1 and is electrically connected to the axial rotation drive mechanism 3, the clamping block transverse movement drive mechanism 5, the clamping block rotation drive mechanism 7, and the tangential rotation drive mechanism 8, respectively.
[0022] The micro-incision fracture reduction and fixation device provided in this invention allows for the clamping and fixation of the implanted bone screw at the fracture site via the transverse bone screw clamp 4 and the rotating bone screw clamp 6. Then, through various driving mechanisms, the patient's fracture ends are elongated, compressed, and rotated axially or tangentially. This assists the surgeon in precisely reducing and fixing the fracture site during fracture surgery. Compared with existing technologies, this invention offers advantages such as smaller incisions, simpler operation, more precise reduction, and better fixation. It can shorten surgical time to a certain extent, reduce patient pain during surgery, and provide a new solution for fracture treatment.
[0023] Furthermore, such as Figure 3 As shown, the axial rotation drive mechanism 3 includes an axial rotation drive motor 31, a first universal joint 32, a first bevel gear 33, and a second bevel gear 34. The axial rotation drive motor 31 is mounted on the housing 1 and electrically connected to the control circuit board 9. The axial rotation drive motor 31 is connected to one end of the first universal joint 32 through a reducer and a gear transmission mechanism. The intermediate connecting rod 22 has a hollow cavity 221. The other end of the first universal joint 32 extends into the hollow cavity 221. One end of the second connecting rod 23 extends into the hollow cavity 221. The first bevel gear 33 and the second bevel gear 34 are respectively installed on the second connecting rod 23 and the end of the first universal joint 32 that extends into the hollow cavity 221. The first bevel gear 33 meshes with the second bevel gear 34.
[0024] When the axial rotation drive mechanism 3 of this embodiment is working, the axial rotation drive motor 31 drives the first universal joint 32 to rotate. The rotation of the first universal joint 32 drives the second bevel gear 34 on it to rotate. The rotation of the second bevel gear 34 drives the first bevel gear 33 meshing with it to rotate. The rotation of the bevel gear drives the second connecting rod 23 to rotate around its axis. When the second connecting rod 23 rotates, the rotating bone screw clamp on it will also rotate, thereby adjusting the relative position of the patient's fracture ends along the circumference of the second connecting rod 23.
[0025] Furthermore, such as Figure 2As shown, the lateral movement drive mechanism 5 includes a transmission screw 51, a nut slider 52, and a lateral movement drive motor 53. The first connecting rod 21 has a groove 211 arranged along its axial direction. The transmission screw 51 is rotatably disposed in the groove 211. The nut slider 52 is screwed onto the transmission screw 51. The lateral movement bone nail clamp 4 is fixed on the nut slider 52. The lateral movement drive motor 53 is connected to the transmission screw 51 through a reducer and a gear transmission mechanism. The lateral movement drive motor 53 is disposed on the housing 1 and electrically connected to the control circuit board 9.
[0026] When the lateral movement drive mechanism 5 of this embodiment is working, the lateral movement drive motor 53 drives the transmission screw 51 to rotate. The rotation of the transmission screw 51 will drive the nut slider 52 screwed on it to move along its axial direction. During the axial movement of the nut slider 52 along the transmission screw 51, it will drive the lateral movement bone nail clamp 4 to move along the first connecting rod 21, thereby adjusting the relative position of the patient's fracture ends along the first connecting rod 21.
[0027] Furthermore, such as Figure 4 As shown, the clamping block rotation drive mechanism 7 includes a drive gear 71, a third bevel gear 72, a fourth bevel gear 73, a second universal joint 74, and a clamping block rotation drive motor 75. The rotating bone screw clamping block 6 has a straight tooth section 61. The drive gear 71 is mounted on the second connecting rod 23 and meshes with the straight tooth section 61. The third bevel gear 72 is mounted inside the second connecting rod 23 and coaxially connected to the drive gear 71. The fourth bevel gear 73 is mounted on one end of the second universal joint 74 and meshes with the third bevel gear 72. The clamping block rotation drive motor 75 is connected to the other end of the second universal joint 74 via a reducer and a gear transmission mechanism. The clamping block rotation drive motor 75 is mounted on the housing 1 and electrically connected to the control circuit board 9.
[0028] When the clamping block rotation drive mechanism 7 of this embodiment is working, the clamping block rotation drive motor 75 drives the second universal shaft 74 to rotate. The rotation of the second universal shaft 74 will drive the fourth bevel gear 73 on it to rotate. The rotation of the fourth bevel gear 73 drives the third bevel gear 72 meshing with it to rotate. The rotation of the third bevel gear 72 drives the drive gear 71 coaxially arranged with it to rotate. The rotation of the drive gear 71 drives the rotating bone nail clamping block 6 to rotate, thereby adjusting the relative position of the fracture ends of the patient.
[0029] Furthermore, such as Figure 2As shown, the tangential rotation drive mechanism 8 includes a connecting block 81, a first connecting rod 82, a second connecting rod 83, a first drive block 84, a first lead screw 85, a first motor 86, a second drive block 87, a second lead screw 88, and a second motor 89. The connecting block 81 is fixedly connected to the end of the second connecting rod 23 away from the intermediate connecting rod 22. The first connecting rod 82 is connected to the connecting block 81 and is parallel to the horizontal plane. The second connecting rod 83 is connected to the connecting block 81 and is parallel to the vertical plane. The first drive block 84 is movably sleeved on the first connecting block 86. The first motor 86 is connected to the first lead screw 85 via a reducer and gear transmission mechanism. The second drive block 87 is movably sleeved on the second connecting rod 83 and threaded onto the second lead screw 88, which is parallel to the horizontal plane. The second motor 89 is connected to the second lead screw 88 via a reducer and gear transmission mechanism. The first motor 86 and the second motor 89 are mounted on the housing 1 and electrically connected to the control circuit board 9 respectively.
[0030] When this embodiment requires the intermediate connecting rod 22 and the second connecting rod 23 to rotate relative to the first connecting rod 21 along the vertical plane to adjust the relative position of the two ends of the patient's fracture site, the first motor 86 can drive the first lead screw 85 to rotate. The rotation of the first lead screw 85 drives the first driving block 84 on it to move along the axial direction of the first lead screw 85. When the first driving block 84 moves, it drives the second connecting rod 23 and the intermediate connecting rod 22 to rotate relative to each other along the vertical plane through the connecting block 81 and the first connecting rod 82, thereby adjusting the relative position of the transverse bone nail clamping block 4 and the rotating bone nail clamping block 6, and thus adjusting the relative position of the two ends of the patient's fracture site.
[0031] When this embodiment requires the intermediate connecting rod 22 and the second connecting rod 23 to rotate relative to the first connecting rod 21 along the horizontal plane to adjust the relative position of the two ends of the patient's fracture site, the second motor 89 can drive the second lead screw 88 to rotate. The rotation of the second lead screw 88 drives the second driving block 87 on it to move along the axial direction of the second lead screw 88. When the second driving block 87 moves, it drives the second connecting rod 23 and the intermediate connecting rod 22 to rotate relative to each other along the vertical plane through the connecting block 81 and the second connecting rod 83, thereby adjusting the relative position of the rotating bone nail clamp 6 and the transverse bone nail clamp 4, and thus adjusting the relative position of the two ends of the patient's fracture site.
[0032] Furthermore, it also includes a controller, which is remotely connected to the control circuit board 9. The controller is adapted to control the axial rotation drive mechanism 3, the clamp block transverse movement drive mechanism 5, the clamp block rotation drive mechanism 7 and the tangential rotation drive mechanism 8 through the control circuit board 9.
[0033] This embodiment, through a controller remotely connected to the control circuit board 9, further facilitates the surgeon's remote control of the micro-incision fracture reduction and fixation device. Furthermore, during implementation, the surgeon can plan the trajectory of the transverse bone screw clamp 4 and the rotating bone screw clamp 6 based on preoperative examination results and preset the operating parameters of each drive mechanism via the controller. This allows the embodiment to automatically adjust the relative angles between the two ends of the fracture site according to the preoperatively planned trajectory and preset parameters, ensuring precise reduction and fixation of the fracture.
[0034] Preferably, the controller is a remote control.
[0035] In this embodiment, the micro-incision fracture reduction and fixation device can be directly controlled by a remote control to reduce the fracture ends of the patient during the fracture reduction process based on the preoperative examination results. This means that the fracture ends do not need to be exposed during the fracture reduction process and the reduction is more accurate. In addition, it can reduce the radiation damage to the patient or the surgeon.
[0036] It should be noted that the controller in this embodiment is not limited to a remote control; other types of controllers can also be used in other embodiments. For example, in some other specific embodiments of the present invention, the controller can also be a computer, mobile phone, or tablet computer with control software.
[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A micro-incision fracture reduction and fixation device, characterized in that, include: Casing (1); Linkage assembly (2), the linkage assembly (2) includes a first link (21), an intermediate link (22) and a second link (23). The first link (21) is connected to one end of the intermediate link (22) via a universal joint. The end of the first link (21) away from the intermediate link (22) is connected to the housing (1). The second link (23) is connected to the other end of the intermediate link (22). The second link (23) can rotate around its own axis. An axial rotation drive mechanism (3) is used to drive the second connecting rod (23) to rotate around its own axis. A transverse bone screw clamp (4) is disposed on the first connecting rod (21) and the transverse bone screw clamp (4) can move axially along the first connecting rod (21); The clamping block lateral movement drive mechanism (5) is used to drive the lateral movement bone screw clamping block (4) to move axially along the first connecting rod (21); Rotating bone screw clamp (6), the rotating bone screw clamp (6) is rotatably mounted on the second connecting rod (23); A clamping block rotation drive mechanism (7) is used to drive the rotating bone nail clamping block (6) to rotate; A tangential rotation drive mechanism (8) is used to drive the intermediate connecting rod (22) and the second connecting rod (23) to rotate along a horizontal or vertical plane; A control circuit board (9) is disposed on the housing (1) and is electrically connected to the axial rotation drive mechanism (3), the clamping block transverse movement drive mechanism (5), the clamping block rotation drive mechanism (7) and the tangential rotation drive mechanism (8).
2. The micro-incision fracture reduction and fixation device as described in claim 1, characterized in that, The axial rotation drive mechanism (3) includes an axial rotation drive motor (31), a first universal joint (32), a first bevel gear (33), and a second bevel gear (34). The axial rotation drive motor (31) is mounted on the housing (1) and electrically connected to the control circuit board (9). The axial rotation drive motor (31) is connected to one end of the first universal joint (32). The intermediate connecting rod (22) has a hollow cavity (221). The other end of the first universal joint (32) extends into the hollow cavity (221). One end of the second connecting rod (23) extends into the hollow cavity (221). The first bevel gear (33) and the second bevel gear (34) are respectively mounted on the second connecting rod (23) and the end of the first universal joint (32) that extends into the hollow cavity (221). The first bevel gear (33) meshes with the second bevel gear (34).
3. The micro-incision fracture reduction and fixation device as described in claim 1, characterized in that, The lateral movement drive mechanism (5) of the clamping block includes a transmission screw (51), a nut slider (52) and a lateral movement drive motor (53). The first connecting rod (21) has a slide groove (211) arranged along its axial direction. The transmission screw (51) is rotatably disposed in the slide groove (211). The nut slider (52) is screwed onto the transmission screw (51). The lateral movement bone nail clamping block (4) is fixed on the nut slider (52). The lateral movement drive motor (53) is connected to the transmission screw (51) and is disposed on the housing (1) and electrically connected to the control circuit board (9).
4. The micro-incision fracture reduction and fixation device as described in claim 1, characterized in that, The clamping block rotation drive mechanism (7) includes a drive gear (71), a third bevel gear (72), a fourth bevel gear (73), a second universal joint (74), and a clamping block rotation drive motor (75). The rotating bone screw clamping block (6) has a straight tooth section (61). The drive gear (71) is disposed on the second connecting rod (23) and meshes with the straight tooth section (61). The third bevel gear (72) is disposed in the second connecting rod (23) and coaxially connected with the drive gear (71). The fourth bevel gear (73) is disposed at one end of the second universal joint (74) and meshes with the third bevel gear (72). The clamping block rotation drive motor (75) is connected to the other end of the second universal joint (74) for transmission. The clamping block rotation drive motor (75) is disposed on the housing (1) and electrically connected to the control circuit board (9).
5. The micro-incision fracture reduction and fixation device as described in claim 1, characterized in that, The tangential rotation drive mechanism (8) includes a connecting block (81), a first connecting rod (82), a second connecting rod (83), a first drive block (84), a first lead screw (85), a first motor (86), a second drive block (87), a second lead screw (88), and a second motor (89). The connecting block (81) is fixedly connected to the end of the second connecting rod (23) away from the intermediate connecting rod (22). The first connecting rod (82) is connected to the connecting block (81) and parallel to the horizontal plane. The second connecting rod (83) is connected to the connecting block (81) and parallel to the vertical plane. The first drive block (84) is movable. The first motor (86) is driven by the first motor (87) and is movably sleeved on the first connecting rod (83) and threaded onto the first lead screw (85). The first lead screw (85) is parallel to the vertical plane. The second motor (87) is driven by the first lead screw (85). The second drive block (87) is movably sleeved on the second connecting rod (83) and threaded onto the second lead screw (88). The second lead screw (88) is parallel to the horizontal plane. The second motor (89) is driven by the second lead screw (88). The first motor (86) and the second motor (89) are mounted on the housing (1) and are electrically connected to the control circuit board (9).
6. The micro-incision fracture reduction and fixation device according to any one of claims 1-5, characterized in that, It also includes a controller, which is remotely connected to the control circuit board (9). The controller is adapted to control the axial rotation drive mechanism (3), the clamping block lateral movement drive mechanism (5), the clamping block rotation drive mechanism (7) and the tangential rotation drive mechanism (8) through the control circuit board (9).
7. The micro-incision fracture reduction and fixation device as described in claim 6, characterized in that, The controller is a remote control.