A traction reduction external fixation frame assembly

Abstract

The application discloses a traction reset external fixing frame assembly, which comprises a main rod, fixing nails and a traction adjusting mechanism, the main rod is provided with an end cylindrical groove, a traction seat is arranged in the end cylindrical groove, an end screw rod of the traction seat is sleeved in the end cylindrical groove, a vertical flat hole is arranged in the middle of the traction seat, shaft holes are arranged in the two side walls of the flat hole, two rotating shafts of an adaptive overturning block are matched and sleeved in the shaft holes of the two side walls of the flat hole, a central through hole is vertically arranged in the middle of the adaptive overturning block, an auxiliary adjusting nail is sleeved in the central through hole, the assembly further comprises a horizontal overturning matched sliding seat, which is provided with a rear arc-shaped hole and is matched and sleeved with a fixing ring, a rear support is fixed to the outer end of the traction seat, a vertical overturning matched locking rod is sleeved in the rear support, the inner end of the vertical overturning matched locking rod is provided with a matched locking hole and is sleeved outside the auxiliary adjusting nail. The components of the traction reset external fixing frame assembly are matched with each other, the corresponding assembly sequence and adjusting structure are arranged, and the function of fixing the external fixing frame under the traction reset condition can be realized.

Description

Technical Field

[0001] This invention belongs to the field of external fixation technology for fractures, specifically relating to an external fixation assembly that accompanies traction reduction. Background Technology

[0002] External fixation devices for fractures are instruments placed outside the limb to fix the fracture. They are mainly composed of external fixation screws connecting the external fixation rods. External fixation devices are primarily used for various severe open fractures of the limbs to maintain the stability and position of the fracture as much as possible and reduce the risk of fracture displacement. In cases of comminuted fractures or infections, external fixation is used, followed by further fixation at the upper and lower ends of the fracture. Guide pins are connected to the external fixator, and adjustments are made. In such cases, fixation can be performed for comminuted fractures or when internal fixation is not suitable, and it can also promote fracture healing.

[0003] The function of external fixators for fractures is primarily support and fixation. Some patients, after a fracture, cannot undergo immediate surgery or internal fixation due to physical reasons or the degree of open contamination of the skin and soft tissue at the fracture site. Therefore, external fixators are the only option. Because external fixators do not cross the fracture ends and are located away from the fracture site, they offer better tissue safety, preventing post-fracture infection due to contamination of the fracture ends and even avoiding osteomyelitis. Therefore, external fixators are crucial in fracture treatment.

[0004] When using existing external fixators to fix two fractured segments, at least two fixation pins are required for each segment to ensure that the two fractured segments do not swing, rotate, or undergo axial expansion and contraction after fixation. However, in practice, the two inner frame holes are fixed first, followed by the two outer frame holes. Since the two inner frame holes can be freely positioned for fixation, they are easy to fix. However, when fixing the two outer frame holes, sometimes the holes are positioned to target blood vessels or nerves, making it impossible to directly insert pins. This leads to difficulties in fixing the external fixator and may even require re-drilling holes for fixation.

[0005] Furthermore, existing external fixators are generally made of rigid cylindrical metal rods. During use, they are fixed together with fasteners to form a relatively stable and sturdy frame, which helps to position and restore the fracture site. At that time, existing external fixators had certain problems in use. The human body contains a large number of blood vessels and nerves. In order to avoid damaging blood vessels or nerves with the locking pins inserted into the broken bone, it is necessary to bend the rigid metal rods or deflect the fasteners to avoid blood vessels or nerves.

[0006] The commonly used external frame metal rods are quite sturdy, but bending them is time-consuming, laborious, and difficult to position. It is easy to deflect the connecting fasteners to avoid blood vessels, but locking them in place is more difficult.

[0007] Existing external fixators for fractures generally do not have traction reduction function. When installing an external fixator, it is necessary to first use a large and complicated traction device to achieve traction reduction before drilling holes to install the external fixator. This operation is troublesome, requires a large number of devices, and is difficult to perform. Summary of the Invention

[0008] To address the common problems of existing fracture external fixators lacking traction reduction function and being inconvenient to use, this invention provides a traction reduction external fixator assembly that provides traction reduction while installing the fracture external fixator, aiming to simplify the surgical procedure.

[0009] The solution adopted by this invention to solve its technical problem is as follows: a traction reset external fixing frame assembly, including a main rod, a series of fixing pins fixed on the main rod, and a traction adjustment mechanism, which includes a traction seat, an adaptive flip block, a mating slide, and a fixing ring. The main rod has an end cylindrical groove at its end, one of which houses the traction seat. The traction seat includes an end screw, and a traction sleeve is fitted onto the outside of the end screw. The end screw is fitted into the end cylindrical groove, keeping the traction sleeve located outside the end of the main rod. A flat hole is vertically oriented in the center of the traction seat, and shaft holes are located on both sides of the flat hole. The adaptive flip block has symmetrical rotating shafts on both sides, and the two rotating shafts are fitted into the shaft holes on both sides of the flat hole. A central through hole is vertically oriented in the center of the adaptive flip block, and an auxiliary adjusting pin is inserted into the center of the hole. The auxiliary adjusting pin has a threaded section at one end and a self-tapping section at the other. The threaded section of the auxiliary adjusting pin is fitted into the central through hole, and a height adjusting upper sleeve and a height adjusting lower sleeve are respectively installed on the upper and lower sides of the through hole. It also includes a transverse flip-fitting slide seat fitted on the outside of the auxiliary adjusting pin. The transverse flip-fitting slide seat has a rear arc-shaped hole and a matching fixing ring. The fixing ring is fixed on the outer support or operating table frame. A locking wire is installed between the fixing ring and the transverse flip-fitting slide seat. A rear support is fixed at the outer end of the traction seat. The rear support has a transverse through hole along the lateral direction, and a longitudinal flip-fitting locking rod is fitted inside it. An external pressure sleeve and an internal pressure sleeve are respectively installed at both ends of the longitudinal flip-fitting locking rod. The inner end of the longitudinal flip-fitting locking rod has a locking hole. The inner diameter of the locking hole is slightly larger than the outer diameter of the auxiliary adjusting pin, and the locking hole is fitted on the outside of the auxiliary adjusting pin.

[0010] There are end cylindrical grooves at both ends of the main rod, and an end plug is fitted in each end cylindrical groove. The end plug body has a through hole along the radial direction, and a fixing pin is fitted into the through hole.

[0011] There is a flat hole in the middle of the traction seat along the vertical direction, and there are shaft holes on both sides of the flat hole. A rear support is fixed at the outer end of the traction seat. A transverse through hole is provided on the upper side of the rear support. There is an end screw at the front end of the traction seat.

[0012] The transverse sliding seat has a vertical through hole in the middle. The auxiliary adjusting pin is fitted into the through hole of the transverse sliding seat. The transverse sliding seat has a rear arc-shaped hole and a matching fixing ring. The fixing ring is fixed to the outer support or operating table frame. A locking wire is installed between the fixing ring and the transverse sliding seat.

[0013] Each fixation pin includes a self-tapping screw section at the lower end and a threaded section at the upper end. The self-tapping screw section at the lower end of each fixation pin is used to screw into the bone at the corresponding location, and the threaded section at the upper end is fixed together with the corresponding through hole of the main rod.

[0014] Two end plugs are first fitted into the cylindrical grooves at both ends of the main rod. The center of the outer end of the rod of the near end plug is provided with a cylindrical groove for the plug end. The traction adjustment mechanism is then fitted together with the near end plug. Specifically, the end screw of the traction adjustment mechanism is fitted into the cylindrical groove of the near end plug end.

[0015] The main rod is positioned across both sides of the fracture joint suture, ensuring that the two fixation screw holes on the main rod are located on either side of the fracture joint suture.

[0016] Installation of the first fixation pin A: First, insert the first fixation pin A through the distal fixation pin hole. Then, screw the self-tapping screw at the lower end of fixation pin A into the distal bone, and screw the threaded section at the upper end onto the thread in the main rod fixation pin hole, ensuring that fixation pin A is fixed integrally with the distal fixation hole of the main rod. Next, align the traction adjustment mechanism with the proximal end of the main rod, that is, insert the end screw into the cylindrical groove at the proximal end of the main rod, ensuring that a traction sleeve is fitted on the outside of the end screw.

[0017] Installation of the second fixing screw B: Insert the second fixing screw B (i.e., the auxiliary adjustment screw) through the through hole of the transverse sliding block, and simultaneously insert the fixing screw B through the central perforation of the adaptive flip block. Screw the lower self-tapping section of the fixing screw B into the proximal bone, ensuring that there are upper and lower height adjustment sleeves on the upper and lower sides of the central perforation, respectively.

[0018] Traction adjustment: By turning the traction sleeve, the near end of the main rod is pressed, so that the traction seat and the main rod are moved away from each other, so that the fixing nail A and the fixing nail B are moved away from each other, thus achieving the purpose of traction.

[0019] Reduction, adjustment, and positioning: Loosen the height adjustment sleeve and the locking wire, loosen the external pressure sleeve and the internal pressure sleeve. Through manual or translational drive, adjust or combine any adjustment of the main rod, such as vertical translation, upward swing, horizontal translation, or horizontal swing, so that the two ends of the fracture are aligned. Then, fix the transverse sliding block and the fixation ring together with the locking wire. Press and fix the external pressure sleeve and the internal pressure sleeve at both ends of the longitudinal locking rod onto the rear support. Finally, rotate the traction sleeve in the opposite direction to align the two ends of the fracture.

[0020] Installation of the third fixation pin C: Insert fixation pin C through and into the fixation hole at the proximal end of the main rod. The lower end of the self-tapping section is screwed into the proximal bone, and the upper end of the threaded section is connected and fixed to the thread in the fixation hole at the proximal end of the main rod.

[0021] Installation of the fourth fixing pin D: Insert an end plug into the cylindrical groove at the distal end of the main rod. The end plug body has a through-hole in the radial direction. Fixing pin D is fitted through the through-hole. The self-tapping section at the lower end of fixing pin D is screwed into the distal bone. The threaded section at the upper end of fixing pin D is screwed into the threaded section of the through-hole for fixation.

[0022] Installation of the fifth fixation pin E: Remove the traction adjustment mechanism from the proximal end of the main rod, i.e., unscrew fixation pin B from the bone, and pull the end screw of the traction seat out of the proximal cylindrical groove. Insert another end plug into the proximal cylindrical groove of the main rod. This end plug has a radially penetrating plug through hole on its body. Fixation pin E is fitted through this plug through hole. The self-tapping section of the lower end of fixation pin E is screwed into the distal bone, and the threaded section of the upper end of fixation pin E is screwed into the threaded inner wall of the plug through hole for fixation. The screwing position of fixation pin E can be the same as that of fixation pin B, or a different position.

[0023] After the overall assembly, retain the main rod and fixing pins A, C, D and E, and remove the traction adjustment mechanism.

[0024] The beneficial effects of the present invention are that the components of the present invention cooperate with each other, and the corresponding assembly sequence and adjustment structure enable the external fixing frame to be fixed under traction and reset conditions.

[0025] When using the components of this invention, the main rod is first placed across both sides of the fracture suture, ensuring that the two fixation screw holes on the main rod 1 are located on both sides of the fracture suture. Then, fixation screws A, B, C, D, and E are installed and fixed in sequence. The self-tapping section at the lower end of each fixation screw is screwed into the distal bone, and the threaded section at the upper end of each fixation screw is screwed into the threaded inner wall of the through hole of the main rod or plug and fixed, so that the lower end of each fixation screw is fixedly connected to the bone and the upper end is fixedly connected to the main rod or plug, forming a stable structure.

[0026] This invention also allows for easy adjustment of the positions of the two end plugs near the outermost ends, thereby controlling the insertion positions of fixation pins D and E respectively, i.e., the appropriate insertion positions for the two outermost pins. It can effectively bypass encountered blood vessels or nerve tissue, avoiding the inconvenience of bending rigid rods for avoidance operations. Simultaneously, the integrated rod assembly reduces the use of connecting fasteners, making locking and fixing of the fracture site more convenient, lowering the cost of the external fixator, reducing its weight and size, and providing a more comfortable user experience for fracture patients. The lighter weight and reduced frame size also allow for greater patient mobility. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the usage state of the present invention.

[0028] Figure 2 yes Figure 1 Front structural diagram.

[0029] Figure 3 This is a perspective view of the component of the present invention.

[0030] Figure 4 yes Figure 3 Cross-sectional structural diagram.

[0031] Figure 5 yes Figure 3 Structural diagram of the main shaft.

[0032] Figure 6 yes Figure 3 The structure diagram of the adaptive flip block.

[0033] Figure 7 yes Figure 3 Structural diagram of the traction seat.

[0034] Figure 8 This is another assembly relationship diagram of the present invention.

[0035] Figure 9 This is a structural diagram of another adaptive flip block of the present invention.

[0036] The diagram labels are as follows: Main rod 1, traction seat 2, end cylindrical groove 3, end screw 4, traction screw sleeve 5, flat hole 6, adaptive flip block 7, rotating shaft 8, center through hole 9, auxiliary adjusting pin 10, height adjusting upper screw sleeve 11, height adjusting lower screw sleeve 12, rear support 13, transverse through hole 14, longitudinal flip locking rod 15, external pressure screw sleeve 16, internal pressure screw sleeve 17, locking hole 18, transverse flip sliding block 19, fixing ring 20, locking thread 21, fixing pin through hole 22, end plug 23, plug through hole 24, auxiliary locking hole 26, auxiliary locking pin one 27, auxiliary locking pin two 28. A is the first fixing pin, B is the second fixing pin (auxiliary adjusting pin), C is the third fixing pin, D is the fourth fixing pin, and E is the fifth fixing pin. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0038] Example 1: A kind of Figure 1 and Figure 2 The traction and repositioning external fixator assembly shown has traction, repositioning, and locking functions after repositioning. Its application can simplify the number of surgical instruments used and reduce the difficulty of surgery.

[0039] The specific structure of the device is as follows: Figure 3 and Figure 4 As shown, it can be seen that it mainly includes a main rod 1 and at least two fixing pins, as well as at least a pair of adjusting pins. The assembly also includes a traction adjustment mechanism.

[0040] The specific structure of the traction adjustment mechanism is as follows: Figure 4 The mechanism includes a traction seat 2, an adaptive flipping block 7, an auxiliary adjusting pin 10, a mating slide 19, and a fixing ring 20.

[0041] The specific structure of traction seat 2 is as follows Figure 7 As shown, there is a flat hole 6 in the middle of the traction seat 2 along the vertical direction, and there are shaft holes 81 on both sides of the flat hole 6. A rear support 13 is fixed at the outer end of the traction seat 2. A transverse through hole 14 is provided on the rear support 13 along the horizontal direction. There is an end screw 4 at the front end of the traction seat 2.

[0042] Adaptive flip block 7, as shown Figure 6 As shown, there are symmetrical rotating shafts 8 on both sides, and the two rotating shafts are fitted into the shaft holes 81 on both sides of the flat hole.

[0043] A central through hole 9 is vertically penetrating the middle of the adaptive flip block 7. An auxiliary adjusting pin 10 has a threaded section at the upper end and a self-tapping section at the lower end. The threaded section of the auxiliary adjusting pin 10 is fitted into the central through hole 9. A height adjusting upper screw sleeve 11 and a height adjusting lower screw sleeve 12 are respectively installed on the upper and lower sides of the through hole.

[0044] The transverse sliding block 19 has a through hole 29 in the middle along the vertical direction. The auxiliary adjusting pin 10 is fitted into the through hole 29 of the transverse sliding block 19. The transverse sliding block 19 is provided with a rear arc-shaped hole and a fixing ring 20 is fitted on it. The fixing ring 20 is fixed on the outer support or operating table frame. A locking wire 21 is installed between the fixing ring 20 and the transverse sliding block 19.

[0045] A rear support 13 is fixed at the outer end of the traction seat 2. A transverse through hole 14 is provided on the rear support 13 along the transverse direction. A longitudinal flip-fit ​​locking rod 15 is fitted inside the hole. An outer pressure screw sleeve 16 and an inner pressure screw sleeve 17 are respectively installed at both ends of the longitudinal flip-fit ​​locking rod 15.

[0046] The inner end of the longitudinal flip-locking rod 15 is provided with a locking hole 18. The inner diameter of the locking hole 18 is slightly larger than the outer diameter of the auxiliary adjusting pin 10, and the locking hole 18 is fitted on the outside of the auxiliary adjusting pin.

[0047] The structure of main rod 1 is as follows Figure 5 As shown, there are end cylindrical grooves 3 at both ends of the main rod 1, and a traction seat 2 is installed in one of the end cylindrical grooves 3.

[0048] A traction sleeve 5 is fitted onto the outer side of the end screw 4 of the traction seat 2. The end screw 4 is fitted into the end cylindrical groove 3, keeping the traction sleeve 5 located on the outer side of the end of the main rod 1.

[0049] Figure 3 As can be seen, each fixation pin includes a self-tapping screw section at the lower end and a threaded section at the upper end. The self-tapping screw section at the lower end of each fixation pin is used to screw into the bone at the corresponding location, and the threaded section at the upper end is fixed together with the corresponding through hole of the main rod.

[0050] When using this embodiment, firstly as follows: Figure 2 As shown, the main rod 1 is placed across both sides of the fracture joint suture, ensuring that the two fixation pin holes 22 on the main rod 1 are located on both sides of the fracture joint suture.

[0051] Installation of the first fixation pin A: After inserting the first fixation pin A through the distal fixation pin hole, screw the self-tapping screw at the lower end of fixation pin A into the distal bone, and screw the threaded section at the upper end into the thread inside the main rod fixation pin hole, ensuring that fixation pin A is fixed to the distal fixation hole of the main rod as one unit. Then, connect the traction adjustment mechanism to the proximal end of the main rod, that is, insert the end screw 4 into the end cylindrical groove 3 at the proximal end of the main rod, ensuring that the traction sleeve 5 is fitted on the outside of the end screw 4.

[0052] Installation of the second fixing pin B: The second fixing pin B (i.e., the auxiliary adjusting pin 10) is inserted through the through hole 29 of the transverse sliding block 19, and at the same time, the fixing pin B is also inserted through the central perforation 9 of the adaptive flip block 7. The lower end of the fixing pin B is screwed into the proximal bone, and it is ensured that there are height adjusting upper threaded sleeves 11 and height adjusting lower threaded sleeves 12 on the upper and lower sides of the central perforation 9, respectively.

[0053] Traction adjustment: By turning the traction sleeve 5, the near end of the main rod 1 is pressed, so that the traction seat 2 and the main rod 1 are moved away from each other, so that the fixing nail A and the fixing nail B are moved away from each other, thus achieving the purpose of traction.

[0054] Reduction, adjustment and positioning: Relax height adjustment sleeves 11 and 12, relax locking wire 21, relax external pressure sleeves 16 and internal pressure sleeves 17. By manual or translational drive, adjust or combine any adjustment of the main rod up and down, swing upward, move left and right, or swing left and right, so that the two ends of the fracture are aligned. Then, fix the transverse sliding seat 19 and the fixation ring 20 together by locking wire 21. Press and fix the external pressure sleeves 16 and internal pressure sleeves 17 at both ends of the longitudinal locking rod 15 onto the rear support. Finally, rotate the traction sleeve 5 in the opposite direction to align the two ends of the fracture.

[0055] Installation of the third fixation pin C: Insert fixation pin C through and into the fixation hole at the proximal end of the main rod 1. The lower end of the self-tapping section is screwed into the proximal bone, and the upper end of the threaded section is connected and fixed to the thread in the fixation hole at the proximal end of the main rod 1.

[0056] Installation of the fourth fixing pin D: Insert an end plug 23 into the cylindrical groove 3 at the distal end of the main rod 1. The end plug 23 has a through-hole 24 in the radial direction. The fixing pin D is fitted through the through-hole 24. The self-tapping section at the lower end of the fixing pin D is screwed into the distal bone. The threaded section at the upper end of the fixing pin D is screwed into the threaded inner wall of the through-hole 24 for fixation.

[0057] Installation of the fifth fixation pin E: Remove the traction adjustment mechanism from the proximal end of the main rod 1, i.e., unscrew fixation pin B from the bone, and pull the end screw of the traction seat 2 out of the proximal end cylindrical groove 3. Insert another end plug 23 into the proximal end cylindrical groove 3 of the main rod 1. The end plug 23 has a radially penetrating plug through hole 24 on its main body. Fixation pin E is fitted through and into the plug through hole 24. The self-tapping section of the lower end of fixation pin E is screwed into the distal bone, and the threaded section of the upper end of fixation pin E is screwed into the threaded inner wall of the plug through hole 24 for fixation. The screwing position of fixation pin E can be the same as that of fixation pin B, or a different position.

[0058] After the overall assembly, retain the main rod 1 and fixing pins A, C, D and E, and remove the traction adjustment mechanism.

[0059] Based on the above structure and assembly sequence, the components described in this embodiment can achieve the function of fixing the external frame under traction reset.

[0060] This invention also allows for easy adjustment of the positions of the two end plugs near the outermost ends, thereby controlling the insertion positions of fixation pins D and E respectively, i.e., the appropriate insertion positions for the two outermost pins. It can effectively bypass encountered blood vessels or nerve tissue, avoiding the inconvenience of bending rigid rods for avoidance operations. Simultaneously, the integrated rod assembly reduces the use of connecting fasteners, making locking and fixing of the fracture site more convenient, lowering the cost of the external fixator, reducing its weight and size, and providing a more comfortable user experience for fracture patients. The lighter weight and reduced frame size also allow for greater patient mobility.

[0061] Example 2: Based on Example 1, further adopt the following... Figure 8 The structure shown involves first fitting two end plugs 23 into the cylindrical grooves 3 at both ends of the main rod 1. One of the end plugs 23 at the proximal end has a cylindrical groove 30 at the center of its outer end. The traction adjustment mechanism is then fitted onto the proximal end plug 23 by matching and fitting the end screw 4 of the traction adjustment mechanism into the cylindrical groove 30 of the proximal end plug. Following the assembly relationship and installation sequence of the fixing pins as described in Example 1, the traction adjustment mechanism is finally removed, leaving the main rod 1 and fixing pins A, C, D, and E intact.

[0062] The difference between this embodiment and Embodiment 1 is that the positions of fixing pin B and fixing pin E are significantly different; fixing pin B is located outside fixing pin E. Furthermore, fixing pin B does not need to be removed beforehand; it is removed last, after all the other fixing pins have been secured.

[0063] This embodiment has the same technical effects as Embodiment 1.

[0064] Example 3: Based on Examples 1 and 2, the following method is adopted. Figure 9As shown in the adaptive flip block 7, it has threaded holes along its lateral direction, and a central screw 31 is installed in the threaded holes. The rotating shafts 8 are cylinders fixed to the outer ends of the central screw 31. The shafts at both ends of the rotating shafts have internal hexagonal holes for easy adjustment by screwing. When the rotating shafts are screwed, the position of the central screw 31 within the adaptive flip block 7 can be changed, thereby causing the rotating shafts to be eccentric to the left or right side of the adaptive flip block 7. There are retaining rings 32 between the rotating shafts and the central screw. When the rotating shafts at both ends are respectively fitted into the shaft holes 81, each retaining ring 32 can be supported on the inner wall of the shaft holes 81. Thus, this embodiment can effectively translate the adaptive flip block left and right, thereby realizing the corresponding lateral adjustment of the distal fracture fixation nail A and the proximal fracture fixation nail B.

[0065] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the present invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A traction reduction external fixation frame assembly comprising a main bar (1) to which is fixed a series of pins, characterised in that, Also include a set of traction adjustment mechanism, the traction adjustment mechanism includes traction seat (2), adaptive flip block (7), matching slide (19) and fixed ring (20), the end of the main rod (1) has end cylindrical groove (3), one of the end cylindrical groove (3) is provided with the traction seat (2), the traction seat (2) includes end screw (4), the outside of the end screw (4) is sleeved with traction sleeve (5), the end screw (4) is sleeved in the end cylindrical groove (3), the traction sleeve (5) is located outside the end of the main rod (1), the middle of the traction seat (2) has a vertical flat hole (6), and the two side walls of the flat hole (6) have shaft holes (81), the two sides of the adaptive flip block (7) have symmetrical rotating shafts (8), and the two rotating shafts are matched and sleeved in the shaft holes (81) of the two side walls of the flat hole, the middle of the adaptive flip block (7) has a vertical center through hole (9), the upper end of an auxiliary adjusting pin (10) has a threaded section, the lower end has a self-tapping section, the threaded section of the auxiliary adjusting pin (10) is sleeved in the center through hole (9), and the height adjusting upper sleeve (11) and the height adjusting lower sleeve (12) are respectively arranged on the upper and lower sides of the through hole, further comprising a horizontal flip matching slide (19) sleeved outside the auxiliary adjusting pin (10), the horizontal flip matching slide (19) is provided with a rear arc-shaped hole and is matched with a fixed ring (20), the fixed ring (20) is fixed on an outer support or a surgical bed frame, a lock wire (21) is arranged between the fixed ring (20) and the horizontal flip matching slide (19), a rear support (13) is fixed to the outer end of the traction seat (2), the rear support (13) is provided with a horizontal through hole (14) in the transverse direction, a longitudinal flip matching locking rod (15) is sleeved in the horizontal through hole (14), the two ends of the longitudinal flip matching locking rod (15) are respectively provided with an outer pressing sleeve (16) and an inner pressing sleeve (17), the inner end of the longitudinal flip matching locking rod (15) is provided with a matching locking hole (18), the inner diameter of the matching locking hole (18) is slightly larger than the outer diameter of the auxiliary adjusting pin (10), and the matching locking hole (18) is sleeved outside the auxiliary adjusting pin.

2. The traction reduction external fixator assembly of claim 1, wherein, The two ends of the main rod (1) are respectively provided with end cylindrical grooves (3), and each end cylindrical groove is sleeved with an end plug (23), the main body of the end plug (23) is provided with a plug through hole (24) penetrating in the radial direction, and a fixed pin is sleeved in the plug through hole (24).

3. The traction reduction external fixator assembly of claim 1, wherein, The middle of the horizontal flip matching slide (19) is provided with a through hole (29) in the vertical direction, the auxiliary adjusting pin (10) is sleeved in the through hole (29) of the horizontal flip matching slide (19), the horizontal flip matching slide (19) is provided with a rear arc-shaped hole and is matched with a fixed ring (20), the fixed ring (20) is fixed on an outer support or a surgical bed frame, a lock wire (21) is arranged between the fixed ring (20) and the horizontal flip matching slide (19).

4. The traction reduction external fixator assembly of claim 1, wherein, Each fixed pin includes a self-tapping section at the lower end and a threaded section at the upper end, the self-tapping section at the lower end of each fixed pin is used to be screwed into the bone of the corresponding part, and the threaded section at the upper end is fixed together with the corresponding main rod through hole.

5. The traction reduction external fixator assembly of claim 1, wherein, In the end cylindrical groove (3) of the main rod (1) two ends, first respectively equipped with two end plugs (23), wherein the proximal end of one end plug (23) rod body outer end center, provided with plug end cylindrical groove (30), the traction adjustment mechanism and the proximal end of the end plug (23) are matched together, specifically the end screw (4) of the traction adjustment mechanism is matched and installed in the proximal end plug end cylindrical groove (30).

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