Minimally invasive reduction traction device for calcaneal fracture

Abstract

The invention discloses a minimally invasive reduction traction device for calcaneal fracture, and belongs to the field of medical instruments. Comprising a first traction block and further comprises a connecting piece, one end of the first traction block is connected with a telescopic mechanism, the telescopic mechanism is connected with the connecting piece, a screw rod is arranged on the first traction block, the screw rod penetrates through the first traction block and the connecting piece, and a second traction block with an adjustable angle is arranged on the connecting piece; and an angle-adjustable fixing pipe is arranged in the second traction block. According to the reduction traction device, the device can be flexibly adjusted according to the specific conditions of a patient through the design of the screw rod and the telescopic mechanism. A first angle adjusting mechanism is combined with a dial, so that a doctor can monitor and adjust the traction angle in real time, through fine adjustment of a second traction block and the angle adjusting mechanism, the flexibility and success rate of an operation are further improved, the reduction difficulty is reduced, and the overall operation effect is improved.

Description

Technical Field

[0001] The invention relates to the field of medical devices, and in particular to a minimally invasive reduction and traction device for calcaneal fractures. Background Art

[0002] Calcaneus fracture is an injury disease caused by trauma to the heel or falling from a height. Calcaneus fracture is a common type of fracture in clinical practice, and improper treatment often leads to serious functional impairment. Traditional treatment methods include open reduction and plate fixation, but this method has problems such as large damage and slow postoperative recovery. With the development of minimally invasive technology, minimally invasive reduction and traction has gradually become an effective means of treating calcaneal fractures. Although minimally invasive treatment has achieved certain results in calcaneal fractures, the existing minimally invasive reduction tools still have some shortcomings in design. For example, traditional distractors may have complex design, low traction efficiency, inconvenient operation, and easy to cause soft tissue cutting. These problems not only increase the difficulty of the operation, but may also affect the surgical effect and the patient's postoperative recovery.

[0003] The invention patent with publication number CN112022313B discloses a three-dimensional traction reduction device for calcaneal fracture, including a reduction double ring, a traction bow and a traction rod; wherein the reduction double ring includes two ring structures arranged at a relative interval, the two ring structures are connected by a plurality of support rods, and a fixing piece is arranged on the reduction double ring, and the fixing piece fixes the two ends of the tibia and fibula traction needle; wherein the traction bow includes a traction needle fixed end and a traction end; wherein the traction rod is arranged on the reduction double ring, the first end of the traction rod extends between the two double ring structures, the first end of the traction rod is detachably connected to the traction end, and the connection position of the traction rod on the reduction double ring and the length of the traction rod extending between the two ring structures can be adjusted. The invention can accurately control the traction angle and strength by adjusting the traction rod, reduce the difficulty of operation, and save manpower. However, the protective device still has the following problems when in use: (1) Although the traction and resetting device can adjust the fixed angle and position, it cannot achieve fine adjustment, which limits its application in complex surgeries; (2) The device is equipped with a sliding rod and a limit pin to maintain stability, but during the adjustment process, the sliding rod may become unstable or the limit pin may not be completely fixed. Summary of the invention

[0004] In view of the above problems, the present invention aims to provide a minimally invasive reduction and traction device for calcaneal fractures. The design of the screw and telescopic mechanism enables the device to be flexibly adjusted according to the specific conditions of the patient. The combination of the first angle adjustment mechanism and the dial enables the doctor to monitor and adjust the traction angle in real time. The fine adjustment of the second traction block and the angle adjustment mechanism further improves the flexibility and success rate of the operation.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows: A minimally invasive reduction and traction device for calcaneal fracture comprises a first traction block and a connecting piece, wherein the connecting piece is movably connected to the first traction block via a distance adjustment mechanism, the connecting piece is provided with an angle-adjustable second traction block; and the second traction block is provided with an angle-adjustable third fixing tube.

[0006] Furthermore, the connecting member is also provided with a first angle adjustment mechanism, a first rotating shaft, and a second rotating shaft. The first rotating shaft rotates through the connecting member and is connected to the first angle adjustment mechanism. The first traction block is located between the first rotating shaft and the second rotating shaft.

[0007] Furthermore, the first angle adjustment mechanism includes a push rod, a rotating handle, a dial and a limiting mechanism; the push rod is slidably mounted in the rotating handle, the rotating handle is connected to the first rotating shaft, the limiting mechanism is provided between one end of the push rod located in the rotating handle and the connecting member, and the limiting mechanism passes through the first rotating shaft; the dial is mounted on the push rod.

[0008] Furthermore, the limiting mechanism includes a first limiting ring and a second limiting ring; the first limiting ring is located at the end of the push rod, the second limiting ring is embedded in the inner wall of the first rotating shaft, the second limiting ring is provided with a plurality of connecting rods for radial sliding, the pull wire is provided between the connecting rod and the first limiting ring, a limiting block is provided between the connecting rod and the connecting piece; a spring is provided between the limiting block and the outer wall of the second limiting ring.

[0009] Furthermore, the first angle adjustment mechanism also includes a pointer, the first rotating shaft is outerly provided with a limiting shell, and the pointer is connected to the limiting shell.

[0010] Furthermore, a half-circle scale is provided on the surface of the dial, and a limiting hole for limiting the limiting block is opened on the dial.

[0011] Furthermore, a mounting hole is provided in the second traction block, a third rotating shaft and a fourth rotating shaft are rotatably provided in the mounting hole, and the third fixed tube is located between the third rotating shaft and the fourth rotating shaft; and a second angle adjustment mechanism for adjusting the third fixed tube is provided on the second traction block.

[0012] Furthermore, the second angle adjustment mechanism and the first angle adjustment mechanism have the same structure.

[0013] The beneficial effects of the present invention are: The reduction and traction device of the present invention can fix the Kirschner wire through the combined design of the fixing hole and the fixing bolt, so that the Kirschner wire can be firmly fixed to the calcaneus of the patient. The design of the screw and the telescopic mechanism enables the device to be flexibly adjusted according to the specific conditions of the patient, ensuring that the traction length is suitable for the patient's anatomical structure. In addition, the combination of the first angle adjustment mechanism and the dial enables the doctor to monitor and adjust the traction angle in real time to ensure that the traction direction is parallel to the fracture section, especially in the treatment of complex or comminuted fractures, through the fine adjustment of the second traction block and the angle adjustment mechanism, the flexibility and success rate of the operation are further improved.

[0014] The reduction and traction device of the present invention can fix the Kirschner wire through the combined design of the fixing hole and the fixing bolt, so that the Kirschner wire can be firmly fixed to the patient's calcaneus, ensuring that the device will not shift during the operation, thereby avoiding errors in reduction and improving the stability and accuracy of the traction force.

[0015] The coordinated design of the screw and telescopic mechanism allows the length of the device to be flexibly adjusted according to the patient's specific situation, ensuring that it fits the patient's anatomical structure and avoiding excessive or insufficient traction. The adjustable length of the device improves the personalization and precision of the surgery, reduces damage to the patient's surrounding tissues, and improves the safety of the surgery.

[0016] 4. The first angle adjustment mechanism is combined with the dial, allowing doctors to monitor and adjust the traction angle in real time to ensure that the traction direction is parallel to the fracture section, thereby achieving accurate reduction. This precise adjustment of the angle effectively reduces the risk of reduction failure, ensures that the fracture ends can dock with the original position, and improves the success rate of the operation. The second traction block and its angle adjustment mechanism allow doctors to make more precise angle adjustments for complex multi-faceted fractures, ensuring that each fracture block can be accurately reduced. This greatly improves the flexibility of the operation, especially for the treatment of complex or comminuted fractures, reduces the difficulty of reduction and improves the overall surgical effect.

[0017] 5. The first angle adjustment mechanism is composed of a push rod, a rotating handle, a dial and a limit mechanism, which can achieve precise adjustment of the angle of the traction block. The dial provides an intuitive angle reference, which is convenient for the operator to quickly locate the required angle. The design of the push rod and the limit mechanism allows the operator to easily complete the angle adjustment and ensure the stable locking of the angle by pressing the push rod and rotating the rotating handle, while avoiding accidental deviation of the angle during surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the minimally invasive reduction and traction device for calcaneal fracture in the present invention.

[0019] Figure 2 It is a front view of the minimally invasive reduction and traction device for calcaneal fracture of the present invention.

[0020] Figure 3 It is a side view of the minimally invasive reduction and traction device for calcaneal fracture of the present invention.

[0021] Figure 4 It is a bottom view of the minimally invasive reduction and traction device for calcaneal fracture of the present invention.

[0022] Figure 5 This is a schematic structural diagram from another angle of the minimally invasive reduction and traction device for calcaneal fracture of the present invention.

[0023] Figure 6 It is a structural schematic diagram of the minimally invasive reduction and traction device for calcaneal fracture after the Kirschner wire is fixed in the present invention.

[0024] Figure 7 It is a cross-sectional view of the minimally invasive reduction and traction device for calcaneal fracture of the present invention.

[0025] Figure 8 It is a structural schematic diagram of the connection between the follower rod and the limiting mechanism in the present invention.

[0026] Fig. 9 It is a schematic diagram of the structure of the cooperation between the angle adjustment mechanism and the first rotating shaft in the present invention.

[0027] Fig.10 For the present invention Figure 2 A partial enlarged view of middle A.

[0028] Fig.11 For the present invention Figure 7 A partial enlarged view of B.

[0029] Fig.12 It is a rear view of the cooperation between the angle adjustment mechanism and the first rotating shaft in the present invention.

[0030] Fig.13 It is a cross-sectional view of the connection between the push rod and the limiting mechanism in the present invention.

[0031] Fig.14 It is a schematic diagram of the structure of the pull wire, connecting rod, spring and limit block in the present invention.

[0032] Among them: 1. first traction block; 2. telescopic mechanism; 3. screw; 4. connecting piece; 5. grip; 6. Kirschner wire; 11. first fixing hole; 12. first fixing bolt; 21. sleeve; 22. telescopic rod; 31. handle; 32. threaded rod; 33. gasket; 34. fixing seat; 41. first angle adjustment mechanism; 42. first rotating shaft; 43. second traction block; 44. second rotating shaft; 411. push rod; 412. rotating handle; 413. limit shell; 4 14. Pointer; 415. Dial; 431. Second fixing hole; 432. Second fixing bolt; 433. Mounting hole; 434. Fixing tube; 435. Second angle adjustment mechanism; 436. Third rotating shaft; 437. Fourth rotating shaft; 438. Third fixing bolt; 4111. First limiting ring; 4112. Second limiting ring; 4113. Pull wire; 4114. Connecting rod; 4115. Spring; 4116. Limit block; 4151. Scale. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "front end", "back end", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0035] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. Embodiment 1

[0036] See attached Figure 1-14 The minimally invasive reduction and traction device for calcaneal fracture shown in the figure comprises a first traction block 1 and a connecting member 4, wherein the connecting member 4 is movably connected to the first traction block 1 via a distance adjustment mechanism, and an angle-adjustable second traction block 43 is provided on the connecting member 4; an angle-adjustable fixing tube 434 is provided in the second traction block 43.

[0037] The distance adjustment mechanism includes a telescopic mechanism 2 and a screw 3. The bottom end of the telescopic mechanism 2 is connected to the first traction block 1. The other end of the telescopic mechanism 2 is connected to the connecting piece 4. The first traction block 1 is provided with a screw 3. The screw 3 passes through the first traction block 1 and the connecting piece 4.

[0038] By providing a distance adjustment mechanism between the connecting member 4 and the first traction block 1, the traction device can be adjusted in length to meet the fracture reduction requirements of different patients, ensuring accurate regulation of the traction force during the reduction process to avoid secondary injury to the patient.

[0039] The first traction block 1 is provided with a first fixing hole 11 and a first fixing bolt 12 .

[0040] The telescopic mechanism 2 includes a sleeve 21 and a telescopic rod 22 sleeved on the sleeve. The sleeve 21 is connected to the first traction block 1 , and the telescopic rod 22 is connected to the connecting member 4 .

[0041] The screw rod 3 includes a handle 31, a threaded rod 32, a gasket 33 and a fixing seat 34. The handle 31 is connected to the threaded rod 32. The other end of the threaded rod 32 passes through the connecting member 4 and is connected to the fixing seat 34. The gasket 33 is arranged on the surface of the connecting member 4 opposite to the fixing seat 34.

[0042] The telescopic mechanism 2 adopts the structure of the sleeve 21 and the telescopic rod 22. The length of the telescopic mechanism 2 can be changed by rotating the screw 3, so that the traction device can achieve controllable length changes during operation, which is convenient for doctors to adjust the traction distance according to the actual situation of the patient, providing flexible use effects and improving the reduction accuracy. Through the screw 3, especially through the combination of the threaded rod 32 and the gasket 33, the firm connection and stability between the various components during the traction process can be guaranteed. At the same time, the design of the handle 31 is convenient for the operator to rotate and adjust, providing good torque transmission, and ensuring the accurate transmission of traction force.

[0043] The connecting member 4 is also provided with a first angle adjustment mechanism 41 , a first rotating shaft 42 , and a second rotating shaft 44 . The first rotating shaft 42 rotates through the connecting member 4 and is connected to the first angle adjustment mechanism 41 . The first traction block 1 is located between the first rotating shaft 42 and the second rotating shaft 44 .

[0044] The first angle adjustment mechanism 41 and the rotating shaft 42 are provided so that the traction device can be adjusted to different angles according to actual use requirements, thereby adapting to the fracture sites and reduction angle requirements of different patients and ensuring personalized adjustment of the surgery.

[0045] The first angle adjustment mechanism 41 includes a push rod 411, a rotating handle 412, a dial 415 and a limiting mechanism; the push rod 411 is slidably mounted in the rotating handle 412, the rotating handle 412 is connected to the first rotating shaft 42, and the limiting mechanism is provided between one end of the push rod 411 located in the rotating handle 412 and the connecting member 4, and the limiting mechanism passes through the first rotating shaft 42; the dial 415 is mounted on the push rod 411.

[0046] Through the design of the push rod 411, the rotating handle 412, the dial 415 and the limit mechanism, the operator can accurately adjust the angle of the traction device, and the specific angle adjustment value is displayed through the dial 415, which is convenient for the operator to monitor the adjustment process, provides clear feedback, and improves the accuracy of the adjustment.

[0047] The limiting mechanism includes a first limiting ring 4111 and a second limiting ring 4112; the first limiting ring 4111 is located at the end of the push rod 411, the second limiting ring 4112 is embedded in the inner wall of the first rotating shaft 42, the second limiting ring 4112 is provided with a plurality of connecting rods 4114 for radial sliding, the pull wire 4113 is provided between the connecting rod 4114 and the first limiting ring 4111, a limiting block 4116 is provided between the connecting rod 4114 and the dial 415; a spring 4115 is provided between the limiting block 4116 and the outer wall of the second limiting ring 4112.

[0048] When the push rod 411 is pressed, since the push rod 411 is connected to the first limiting ring 4111, the pull wire 4113 is driven to pull the limiting block 4116 to move, thereby releasing the limiting state and adjusting the angle. When the angle adjustment is completed, the push rod 411 is released, and the limiting block 4116 returns to the original position under the action of the spring 4115 to limit the position. The limiting mechanism is a combination of multiple components, so that the device can be fixed after the angle is adjusted to the right position, preventing the angle from being offset due to accidental touch, ensuring the stability of the traction angle, and thus improving the safety and efficiency of the operation.

[0049] The first angle adjustment mechanism 41 further includes a pointer 414 , which is disposed between the push rod 411 and the dial 415 and connected to the limiting housing 413 .

[0050] The cooperation between the pointer 414 and the dial 415 makes the angle adjustment more intuitive. The operator can judge whether the angle of the traction device meets expectations in time through the position of the pointer 414, thereby improving the visualization effect of the angle adjustment.

[0051] A half-circle scale 4151 is provided on the surface of the scale plate 415 , and a limiting hole for limiting the limiting block 4116 is opened on the scale plate 415 .

[0052] Through the half-circle scale 4151 on the dial 415, the operator can intuitively read the current traction angle, and through the design of the limit hole, ensure that the angle can be effectively fixed after being adjusted to prevent deviation, thereby improving the accuracy of the device.

[0053] The second traction block 43 has a mounting hole 433 therein, a third rotating shaft 436 and a fourth rotating shaft 437 are rotatably disposed in the mounting hole 433, and the third fixing tube 434 is located between the third rotating shaft 436 and the fourth rotating shaft 437; a third fixing bolt 438 is disposed outside the mounting hole.

[0054] The second angle adjustment mechanism 435 has the same structure as the first angle adjustment mechanism 41 .

[0055] The second traction block 43 is provided with a second fixing hole 431 and a second fixing bolt 432 .

[0056] The first traction block 1 is also provided with a handle 5 .

[0057] By arranging the handle 5 on the first traction block 1, the operator can operate and move the traction device more conveniently, which provides a good operating feel and convenience and improves the comfort and stability of the equipment. Embodiment 2

[0058] Based on the first embodiment, the second embodiment provides the detailed structure of the second angle adjustment mechanism 435 and the mounting hole 433, as shown in the attached figure. Fig.10 The second traction block 43 is provided with a second angle adjustment mechanism 435 for adjusting the third fixed tube 434 , and the mounting hole 433 is provided with a third rotating shaft 436 , a fourth rotating shaft 437 and a fixed tube 434 , and the third rotating shaft 436 rotates through the second traction block 43 and is connected to the second angle adjustment mechanism 435 .

[0059] The second traction block 43 is provided with a mounting hole 433, and the angle adjustment can be further refined through the cooperation of the third rotating shaft 436 and the fourth rotating shaft 437, so as to ensure that the second traction block 43 can be fine-tuned in multiple directions, accurately matching the fracture condition of the patient, and improving the treatment effect. The fixing tube 434 is connected through the third rotating shaft 436 and the fourth rotating shaft 437, so as to further improve the stability and operation accuracy of the second traction block 43, ensure that no deviation or looseness occurs during the angle adjustment process, and ensure the overall stability of the traction device.

[0060] Specific application cases: In the treatment process of calcaneal fracture, the minimally invasive reduction and traction device can greatly improve the reduction accuracy and the success rate of the operation. The specific application method of the minimally invasive reduction and traction device for calcaneal fracture of the present application is as follows: First, the first traction block 1 is fixed to the patient's calcaneal part, and the Kirschner wire is fixed through the first fixing hole 11 and the first fixing bolt 12 to prevent the device from shifting during the operation. According to the specific situation of the patient's fracture, the doctor rotates the screw 3 to adjust the length of the telescopic mechanism 2, and ensures that the length of the device is adapted to the anatomical structure of the patient's foot through the cooperation of the telescopic rod 22 and the sleeve 21. The flexible adjustment of the length of the device effectively avoids excessive or insufficient traction caused by the device being too long or too short, reduces damage to surrounding tissues, and improves the accuracy of reduction.

[0061] In order to accurately align the fracture ends, the doctor uses the first angle adjustment mechanism 41 to adjust the angle of the traction device by pressing the push rod 411 and the rotating handle 412. After pressing the push rod 411, since the push rod 411 is connected to the first limiting ring 4111, the pull wire 4113 is driven to pull the limiting block 4116 to move, thereby releasing the limiting state and adjusting the angle. When the angle adjustment is completed, the push rod 411 is released, and the limiting block 4116 returns to the original position under the action of the spring 4115 for limiting. The angle is adjusted in real time through the dial 415 and the pointer 414, and the limiting mechanism is used to fix the angle to ensure that the angle remains stable during the reduction process. Real-time monitoring and precise adjustment of the angle ensure that the fracture fragments can dock with the original position, avoiding reduction failure caused by angle deviation.

[0062] For complex multi-faceted fractures, the doctor further uses the second angle adjustment mechanism 435 of the second traction block 43 to achieve more precise multi-angle adjustment through the cooperation of the third rotating shaft 436 and the fourth rotating shaft 437. This allows the fracture fragments to be fine-tuned from multiple directions to ensure that each fracture fragment can be accurately reset, effectively improving the success rate of the operation, especially when dealing with comminuted fractures.

[0063] The multi-angle adjustment function of the traction device ensures that each fracture fragment can be accurately aligned, greatly improving the stability of fixation. The beneficial effect of this step is that the multi-directional adjustment ability of the traction device ensures the accurate docking of the fracture fragments, prevents the dislocation of the fracture fragments after fixation, and ensures the rapid healing of the fracture.

[0064] After fixing the fracture fragments, the doctor evaluates the reduction through imaging methods such as X-rays. If the reduction is incomplete, the doctor can make fine adjustments through the screw 3, the telescopic mechanism 2 and the angle adjustment mechanism 41 to ensure that the fracture fragments are completely reduced. The fine-tuning function allows the doctor to correct small deviations in the reduction in time during the operation, avoiding secondary surgery and improving the overall success rate of the operation.

[0065] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A minimally invasive reduction and traction device for calcaneal fracture, comprising a first traction block (1), characterized in that: It also comprises a connecting member (4), wherein the connecting member (4) is movably connected to the first traction block (1) via a distance adjustment mechanism, and a second traction block (43) with an adjustable angle is provided on the connecting member (4); A fixing tube (434) with an adjustable angle is provided in the second traction block (43).

2. The minimally invasive reduction and traction device for calcaneal fracture according to claim 1, characterized in that: The connecting member (4) is also provided with a first angle adjustment mechanism (41), a first rotating shaft (42), and a second rotating shaft (44); the first rotating shaft (42) rotates through the connecting member (4) and is connected to the first angle adjustment mechanism (41); and the second traction block (43) is located between the first rotating shaft (42) and the second rotating shaft (44).

3. The minimally invasive reduction and traction device for calcaneal fracture according to claim 2, characterized in that: The first angle adjustment mechanism (41) comprises a push rod (411), a rotating handle (412), a dial (415) and a limiting mechanism; The push rod (411) is slidably sleeved in the rotating handle (412), the rotating handle (412) is connected to the first rotating shaft (42), and the limiting mechanism is provided between one end of the push rod (411) located in the rotating handle (412) and the connecting member (4), and the limiting mechanism passes through the first rotating shaft (42); The scale plate (415) is sleeved on the push rod (411).

4. The minimally invasive reduction and traction device for calcaneal fracture according to claim 3, characterized in that: The limiting mechanism comprises a first limiting ring (4111) and a second limiting ring (4112); The first limiting ring (4111) is located at the end of the push rod (411), the second limiting ring (4112) is embedded in the inner wall of the first rotating shaft (42), the second limiting ring (4112) is provided with a plurality of connecting rods (4114) which slide radially, the pulling wire (4113) is provided between the connecting rod (4114) and the first limiting ring (4111), and a limiting block (4116) is provided between the connecting rod (4114) and the connecting member (4); A spring (4115) is provided between the limiting block (4116) and the outer side wall of the second limiting ring (4112).

5. The minimally invasive reduction and traction device for calcaneal fracture according to claim 4, characterized in that: The first angle adjustment mechanism (41) further comprises a pointer (414); a limiting shell (413) is provided on the outer sleeve of the first rotating shaft (42); and the pointer (414) is connected to the limiting shell (413).

6. The minimally invasive reduction and traction device for calcaneal fracture according to claim 5, characterized in that: A half-circle scale (4151) is provided on the surface of the scale plate (415), and a limiting hole for limiting the position of the limiting block (4116) is provided on the scale plate (415).

7. The minimally invasive reduction and traction device for calcaneal fracture according to claim 6, characterized in that: A mounting hole (433) is provided in the second traction block (43), a third rotating shaft (436) and a fourth rotating shaft (437) are rotatably provided in the mounting hole (433), and the fixing tube (434) is located between the third rotating shaft (436) and the fourth rotating shaft (437); The second traction block (43) is provided with a second angle adjustment mechanism (435) for adjusting the fixing tube (434).

8. The minimally invasive reduction and traction device for calcaneal fracture according to claim 7, characterized in that: The second angle adjustment mechanism (435) and the first angle adjustment mechanism (41) have the same structure.

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