A knee brace

Abstract

This utility model discloses a knee flexion brace, comprising a support unit and a fixation unit. The support unit includes a thigh support and a calf support. One end of the thigh support along its length is rotatably connected to one end of the calf support along its length. The ends of the thigh and calf supports that are far apart from each other extend downwards, forming a load-bearing space on their upward-facing sides. The fixation unit includes at least one sliding bracket, which is installed on the calf support and located in the load-bearing space. The sliding bracket is equipped with a threaded needle. This application allows the patient's leg to be placed on the support unit, and then the threaded needle can be directly inserted into the patient's leg through the fixation unit. This effectively solves the problem of difficulty in fixing the knee flexion angle during manual fixation, allowing doctors to insert the threaded needle more smoothly and accurately, improving the convenience of surgical operations.

Description

Technical Field

[0001] This utility model relates to the field of orthopedic fixation bracket technology, and in particular to a knee flexion bracket. Background Technology

[0002] In tibial fracture surgery, the surgeon or his assistant needs to bend the patient's leg to facilitate the insertion of an intramedullary nail into the tibia. However, when the patient's knee is manually fixed, the angle of knee flexion is difficult to stabilize, which makes it difficult for the surgeon to perform the intramedullary nailing surgery smoothly. Utility Model Content

[0003] The purpose of this utility model is to provide a knee flexion brace to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The solution to the technical problem of this utility model is: A knee flexion brace, comprising: The support unit includes a thigh support and a calf support. One end of the thigh support along its own length is rotatably connected to one end of the calf support along its own length. The ends of the thigh support and the calf support that are far apart from each other both extend downwards. The upper side of the thigh support and the calf support forms a load-bearing space. The fixing unit includes at least one sliding bracket, which is mounted on the lower leg bracket and located at the bearing space position, and the sliding bracket is provided with threaded pins.

[0005] This technical solution has at least the following beneficial effects: During tibial surgery, the patient's leg is first placed in the support space, and then the relative angles of the thigh support and the lower leg support are adjusted according to the needs of the surgery, so that the patient's knee flexion angle reaches a suitable range. This design can adapt to different patients' legs and effectively solves the problem of difficulty in fixing the knee flexion angle when manually fixed, providing a stable operating basis for the surgery. Then, during the operation, the sliding support is used as the support for the threaded needle. When it is necessary to insert the threaded needle into the patient's leg, the doctor can easily move the sliding support to the most suitable position, so as to insert the threaded needle more smoothly and accurately, which greatly improves the convenience of the surgical operation and helps the surgeon to carry out tibial intramedullary nailing surgery more efficiently.

[0006] As a further improvement to the above technical solution, the calf support includes a first frame and a second frame. With the length direction of the calf support as the first direction, the first frame can be telescopically installed on the second frame along the first direction. The end of the second frame away from the first frame is rotatably connected to the calf support, and the sliding bracket is installed on the second frame.

[0007] By adopting the above technical solution, the flexibility of adjusting the knee flexion bracket angle is greatly improved. The surgeon can precisely adjust the length of the lower leg bracket according to the actual needs of the patient's leg during surgery, thereby cleverly changing the angle between the thigh bracket and the lower leg bracket. At the same time, the retractable first frame allows the surgeon to perfectly adapt the knee flexion bracket to the patient's leg by adjusting the extension and retraction of the first frame, regardless of whether the patient is tall with long legs, short with short legs, or has a special fracture location or special requirements for the knee flexion angle. This significantly improves the success rate and safety of the surgery.

[0008] As a further improvement to the above technical solution, the sliding bracket is provided with a sliding groove, the second frame can slide and cooperate with the sliding groove, and a positioning bolt is threaded on the sliding bracket, the positioning bolt can pass into the sliding groove and abut against the second frame.

[0009] By adopting the above technical solution, doctors can easily adjust the position of the sliding support on the second frame along the sliding groove according to the patient's leg condition during surgery, creating favorable conditions for the subsequent precise insertion of the threaded needle. The design of the positioning bolt allows it to quickly pass through the sliding groove and abut against the second frame after the sliding support is adjusted to the correct position, firmly fixing the sliding support in the required position. This ensures that the sliding support will not move due to external interference during the operation, ensuring the accuracy and stability of the surgical procedure. This easy-to-operate sliding and positioning method avoids cumbersome installation and fixing steps, allowing doctors to quickly complete the position setting of the sliding support and then efficiently carry out the threaded needle insertion operation, greatly improving surgical efficiency.

[0010] As a further improvement to the above technical solution, the sliding bracket includes a sliding seat and a support mounted on the sliding seat. The sliding seat and the support are connected by a universal joint. The sliding groove is formed in the sliding seat, and the positioning bolt is mounted on the sliding seat.

[0011] By employing the aforementioned technical solution, surgeons can adjust the support in multiple dimensions via the universal joint during surgery, thereby optimizing the installation angle of the threaded needle according to the specific details of the patient's leg fracture. Whether it's a complex fracture angle or a unique bone structure, it can be precisely adapted, greatly improving the accuracy and adaptability of the surgical procedure. Furthermore, in actual surgery, surgeons no longer need to perform complex overall support adjustments to adapt to specific leg conditions. By simply manipulating the universal joint, the direction of the support can be quickly changed, making the insertion angle of the threaded needle more aligned with surgical needs, significantly saving surgical time.

[0012] As a further improvement to the above technical solution, the support includes two clamping parts that move apart or closer to each other in the vertical direction, and a clamping gap is formed between the two clamping parts, with the threaded pin disposed within the clamping gap.

[0013] By adopting the above technical solution, during surgery, the surgeon can securely fix the threaded needle within the clamping gap according to its size. This stable fixation method ensures that the threaded needle will not wobble or shift when used to fix the patient's leg. Furthermore, this design can flexibly adapt to threaded needles of different diameters by adjusting the distance between the clamping parts. Surgeons do not need to expend effort searching for fixation devices that fit specific threaded needles; both commonly used and special-sized threaded needles can be easily and stably installed on this knee flexion brace, enhancing the brace's compatibility with various surgical instruments.

[0014] As a further improvement to the above technical solution, a locking groove is provided on the side of the clamping part near the clamping gap, and the threaded needle is located in the locking groove. The locking groove is adapted to the shape of the threaded needle, so that the threaded needle will not easily displace in the horizontal or vertical direction after being fixed, and can remain stable even if it is subjected to certain external force interference during the operation, providing solid and reliable support for the surgical operation.

[0015] As a further improvement to the above technical solution, the second frame is provided with binding straps.

[0016] The above-mentioned technical solution uses flexible and non-metallic straps to fix the patient's legs, reducing foot movement during surgery and avoiding metal obstruction. This allows the surgeon to clearly observe the patient's entire leg, improving the success rate of the surgery.

[0017] As a further improvement to the above technical solution, the fixing unit also includes a connecting bracket, which is installed on the second frame. The connecting bracket has a driving end at its end along the first direction. The driving end is detachably connected to the sliding bracket, and the driving end can move in the first direction away from or towards the connecting bracket.

[0018] Manually moving the sliding stent directly can easily affect its positional accuracy due to factors such as hand tremors. By adopting the above-mentioned technical solution, the surgeon can precisely control the position of the sliding stent in the first direction. During surgery, the sliding stent can be accurately moved to the ideal installation position on the patient's tibia, avoiding deviations that may occur with manual adjustments. Moreover, the movement is more stable and smoother due to the connection to the stent's drive end. This makes the sliding stent less prone to shaking or deviating from its predetermined trajectory during movement, ensuring stability during the surgical procedure and contributing to a higher success rate.

[0019] As a further improvement to the above technical solution, the connecting bracket is a hollow structure, and a push rod is provided inside the connecting bracket. The push rod can move in a first direction, and the driving end is the end of the push rod away from the connecting bracket. A driving component for driving the push rod to move is provided inside the connecting bracket.

[0020] First, the hollow connecting stent provides ample space for the internal components, resulting in a compact and well-organized structure that doesn't occupy excessive surgical space. Second, the drive assembly moves the push rod in the first direction, enabling precise control of the drive end's position. Compared to manual pushing, the drive assembly provides a stable and continuous driving force, making the movement of the sliding stent smoother and more precise. This avoids the shaking or displacement deviations that can occur with manual operation, greatly improving the accuracy of the sliding stent's positioning during surgery. Furthermore, the drive assembly reduces the surgeon's workload. During surgery, the surgeon only needs to operate the drive assembly to easily adjust the sliding stent's position, improving surgical efficiency and better adapting to the needs of rapid and precise adjustment of the sliding stent's position in different surgical scenarios.

[0021] As a further improvement to the above technical solution, a scale is provided on the push rod.

[0022] The ruler allows doctors to intuitively and accurately understand the distance the push rod has moved. During surgery, when doctors adjust the position of the push rod to move the sliding support using the drive assembly, they can precisely control the range of motion of the sliding support by referring to the scale readings on the ruler. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the knee flexion brace of this utility model; Figure 2 This is a side view of the knee brace of this utility model; Figure 3 This is a front view of the knee flexion brace of this utility model, facing the lower leg brace. Figure 4 This is a sectional view of the sliding bracket and connecting bracket of this utility model from a side view perspective; Figure 5This is a cross-sectional view of the first driving component embodiment of the sliding bracket and connecting bracket of this utility model; Figure 6 This is a cross-sectional view of a second driving component embodiment of the sliding bracket and connecting bracket of this utility model. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] Reference Figure 1 and Figure 2 The present application provides a knee flexion brace, which includes a support unit 1 and a fixing unit 2. The support unit 1 includes a thigh support 12 and a calf support 11. One end of the thigh support 12 along its own length direction is rotatably connected to one end of the calf support 11 along its own length direction. The ends of the thigh support 12 and the calf support 11 that are far apart from each other both extend downward. The upper side of the thigh support 12 and the calf support 11 forms a bearing space. The fixing unit 2 includes at least one sliding bracket 21. The sliding bracket 21 is installed on the calf support 11 and located at the bearing space position. The sliding bracket 21 is provided with a threaded pin 3.

[0030] As described above, during tibial surgery, the patient's leg is first placed in the support space. Then, according to the needs of the surgery, the relative angles of the thigh support 12 and the lower leg support 11 are adjusted to allow the patient's knee flexion angle to reach a suitable range. This design can adapt to different patients' legs and effectively solves the problem of difficulty in fixing the knee flexion angle during manual fixation, providing a stable operating basis for the surgery. Then, during the operation, the sliding support 21 is used as the support for the threaded needle 3. When it is necessary to insert the threaded needle 3 into the patient's leg, the doctor can easily move the sliding support 21 to the most suitable position, thereby inserting the threaded needle 3 more smoothly and accurately, which greatly improves the convenience of the surgical operation and helps the surgeon to carry out tibial intramedullary nailing surgery more efficiently.

[0031] To enable support unit 1 to fit patients of more body types, refer to Figure 1 The calf support 11 includes a first frame 111 and a second frame 112. With the length direction of the calf support 11 as the first direction, the first frame 111 can be telescopically installed on the second frame 112 along the first direction. The end of the second frame 112 away from the first frame 111 is rotatably connected to the calf support 11. The sliding bracket 21 is installed on the second frame 112.

[0032] As a further embodiment, the thigh support 12 includes a third frame 121 and a fourth frame 122. With the length direction of the thigh support 12 as the second direction, the third frame 121 can be telescopically mounted on the fourth frame 122 along the second direction. The fourth frame 122 is rotatably connected to the second frame 112. Through the adjustable thigh support 12, it can be further adapted to the body shape of different patients, improving the practicality of the entire knee flexion support.

[0033] Specifically, both the second frame 112 and the fourth frame 122 are provided with installation channels. The first frame 111 is installed in the installation channel of the second frame 112, and the third frame 121 is installed in the installation channel of the fourth frame 122.

[0034] As described above, the adjustable thigh support 12 and calf support 11 greatly enhance the flexibility of adjusting the knee flexion support angle. The surgeon can precisely adjust the length of the calf support 11 according to the patient's actual leg needs during surgery, thereby subtly altering the angle between the thigh support 12 and the calf support 11. Furthermore, the adjustable first frame 111 allows the surgeon to perfectly adapt the knee flexion support to the patient's leg, regardless of whether the patient is tall with long legs, short with short legs, or has a special fracture location or specific requirements for knee flexion angle. This significantly improves the success rate and safety of the surgery.

[0035] To move the sliding bracket 21 on which the threaded needle 3 is placed, and to better adjust the position of the threaded needle 3 when it is inserted into the patient's tibia, refer to... Figure 3 and Figure 4 The sliding bracket 21 has a sliding groove 211 extending along the first direction. The second frame 112 can slide and cooperate with the sliding groove 211. The sliding bracket 21 is threaded with a positioning bolt 212, which can be inserted into the sliding groove 211 and pressed against the second frame 112.

[0036] Specifically, the sliding bracket 21 is installed on the outer wall of the second frame 112, that is, on the side of the second frame 112 along the first direction. The opening direction of the sliding groove 211 is horizontal and perpendicular to the first direction. The positioning bolt 212 is installed at the bottom of the sliding bracket 21 and extends upward into the sliding groove 211.

[0037] As can be seen from the above, during surgery, the doctor can easily and quickly adjust the position of the sliding bracket 21 on the second frame 112 along the sliding groove 211 according to the patient's leg condition, creating favorable conditions for the subsequent precise insertion of the threaded needle 3. The design of the positioning bolt 212 allows it to quickly pass through the sliding groove 211 and press against the second frame 112 after the sliding bracket 21 is adjusted into place, firmly fixing the sliding bracket 21 in the required position. This ensures that the sliding bracket 21 will not move due to external interference during the operation, ensuring the accuracy and stability of the surgical operation. This easy-to-operate sliding and positioning method avoids cumbersome installation and fixing steps, allowing the doctor to quickly complete the position setting of the sliding bracket 21, thereby efficiently carrying out the threaded needle 3 insertion operation, greatly improving the efficiency of the operation.

[0038] To further adjust the threaded pins placed on the sliding support 21, the sliding support 21 includes a sliding seat and a support mounted on the sliding seat. The sliding seat and the support are connected by a universal joint 6. A sliding groove 211 is formed in the sliding seat, and a positioning bolt 212 is installed in the sliding seat. Through this design, the surgeon can adjust the support in multiple dimensions during surgery using the universal joint 6, thereby allowing the installation angle of the threaded pin 3 to be optimized comprehensively according to the specific condition of the patient's leg fracture. It can precisely adapt to complex fracture angles or special bone structures, greatly improving the accuracy and adaptability of surgical operations. Furthermore, in actual surgery, the surgeon no longer needs to perform complex overall support adjustments to adapt to specific leg conditions. By simply operating the universal joint 6, the direction of the support can be quickly changed, making the insertion angle of the threaded pin 3 more in line with surgical needs, greatly saving surgical time.

[0039] As a further embodiment, the support includes two clamping parts 213 that move apart or closer to each other in the vertical direction, forming a clamping gap between the two clamping parts 213. The threaded pin 3 is disposed in the clamping gap. Specifically, the clamping part 213 located at the bottom is connected to the sliding seat through a universal joint 6. A connecting bolt is provided between the two clamping parts 213. The connecting bolt passes through the clamping part 213 located at the top and is threadedly connected to the clamping part 213 located at the bottom. When the threaded pin 3 is placed in the clamping gap, it is only necessary to tighten the connecting bolt to fix the threaded pin 3 to the support.

[0040] By adopting the above design, during surgery, the surgeon can securely fix the threaded needle 3 within the clamping gap according to its size. This stable fixation method ensures that the threaded needle 3 will not wobble or shift when used to fix the patient's leg. Secondly, this design can flexibly adapt to threaded needles 3 of different diameters by adjusting the distance between the clamping parts 213. The surgeon does not need to spend time searching for a fixation device that fits a specific threaded needle 3. Whether it is a commonly used or special size threaded needle 3, it can be easily and stably installed on this knee flexion bracket, enhancing the bracket's compatibility with various surgical instruments.

[0041] As a further embodiment, a locking groove is provided on the side of the clamping part 213 near the clamping gap, and the threaded needle 3 is located in the locking groove. The locking groove is adapted to the shape of the threaded needle 3, so that the threaded needle 3 will not easily move in the horizontal or vertical direction after being fixed, and can remain stable even if it is disturbed by a certain external force during the operation, providing solid and reliable support for the surgical operation.

[0042] Reference Figure 1 and Figure 3 The second frame 112 is equipped with a binding strap 4. The binding strap 4 can be made of cloth or other non-metallic flexible materials. The patient's leg is fixed by the flexible and non-metallic binding strap 4, which reduces the shaking of the patient's foot during the operation and avoids metal obstruction. The surgeon can clearly observe the patient's entire leg and improve the success rate of the operation.

[0043] Manually moving the sliding bracket 21 directly is prone to affecting positional accuracy due to factors such as hand tremors. (Refer to...) Figure 1 and Figure 5The fixing unit 2 also includes a connecting bracket 22, which is mounted on the second frame 112. The connecting bracket 22 has a driving end 222 at its end along the first direction. The driving end 222 is detachably connected to the sliding bracket 21. The driving end 222 can move in the first direction away from or towards the connecting bracket 22. This design allows the surgeon to precisely control the position of the sliding bracket 21 in the first direction. During surgery, the sliding bracket 21 can be accurately moved to the ideal installation position where the threaded needle 3 aligns with the patient's tibia, avoiding potential deviations from manual adjustments. Furthermore, the movement of the driving end 222 of the connecting bracket 22 provides a more stable and smoother movement process. This makes the sliding bracket 21 less prone to shaking or deviating from its predetermined trajectory during movement, ensuring stability during the surgical procedure and contributing to a higher success rate.

[0044] In some embodiments, the fixing unit 2 includes a connecting bracket 22 and two sliding brackets 21. The two sliding brackets 21 are arranged along a first direction. The connecting bracket 22 is located between the two sliding brackets 21. Both ends of the connecting bracket 22 along the first direction are provided with driving ends 222. The driving ends 222 can be detachably connected to the two second frames 112. Both driving ends 222 can move in the first direction in a direction away from or close to each other. The connecting bracket 22 drives the two sliding brackets 21 to move simultaneously, thereby synchronously adjusting the position of the threaded pins 3 on the two sliding brackets 21.

[0045] Furthermore, the connecting bracket 22 is located on one side of the second frame 112 along the first direction. The connecting bracket 22 has a sliding groove extending through the first direction on the side facing the second frame 112. The connecting bracket 22 is provided with a positioning bolt 212, which is threaded to the connecting bracket 22 from the bottom and can pass into the sliding groove to abut against the second frame 112. The connecting bracket 22 has a hollow structure and a push rod 221 is provided inside the connecting bracket 22. The push rod 221 can move in the first direction. The driving end 222 is the end of the push rod 221 away from the connecting bracket 22. The connecting bracket 22 is provided with a driving assembly 5 for driving the push rod 221 to move.

[0046] As described above, the hollow connecting bracket 22 provides reasonable space for the internal components, making the entire structure compact and orderly, without occupying too much surgical operating space. Secondly, by driving the push rod 221 in the first direction via the drive component 5, precise control of the position of the drive end 222 (i.e., the end of the push rod 221) can be achieved. Compared to manual pushing, the drive component 5 provides a stable and continuous driving force, making the movement of the sliding bracket 21 smoother and more precise, avoiding the shaking or displacement deviation that may occur due to manual operation, and greatly improving the accuracy of the sliding bracket 21's positioning during surgery. Furthermore, the design of the drive component 5 reduces the surgeon's workload. During surgery, the surgeon only needs to operate the drive component 5 to easily adjust the position of the sliding bracket 21, improving surgical efficiency and better adapting to the needs of rapid and precise adjustment of the sliding bracket 21's position in different surgical scenarios.

[0047] Reference Figure 5 In this embodiment, the drive assembly 5 includes a drive cylinder 52 and a displacement sensor. One push rod 221 corresponds to one drive cylinder 52. The drive cylinder 52 is installed in the connecting bracket 22. The displacement sensor is used to sense the moving distance of the push rod 221. When it is necessary to drive the push rod 221 to start, the power is connected, the drive cylinder 52 is started, and the push rod 221 is driven to move, so as to achieve more precise control of the push rod 221.

[0048] Reference Figure 6 In other embodiments, the drive assembly 5 includes a gear 51 and a rotating handle. The gear 51 is rotatably mounted inside the connecting bracket 22. Both push rods 221 have multiple toothed blocks along their length, and these teethed blocks mesh with the gear 51. The rotating handle is rotatably mounted outside the connecting bracket 22 and connected to the shaft of the gear 51. When it is necessary to move the push rods 221, simply rotating the handle drives the gear 51 to rotate, which in turn drives the push rods 221 to move the sliding bracket 21 on the second frame 112. This design allows the push rods 221 to be moved manually at all times, reducing reliance on electrical components and enabling the knee flexion brace to be used in various situations.

[0049] As a further implementation, a scale (not shown in the attached diagram) is provided on the push rod 221. The presence of the scale allows the doctor to intuitively and accurately understand the distance the push rod 221 has moved. During surgery, when the doctor adjusts the position of the push rod 221 to move the sliding support 21 using the drive assembly 5, the doctor can accurately control the range of movement of the sliding support 21 according to the scale values ​​on the scale.

[0050] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A knee flexion brace, characterized in that, include: The support unit (1) includes a thigh support (12) and a calf support (11). One end of the thigh support (12) along its own length direction is rotatably connected to one end of the calf support (11) along its own length direction. The ends of the thigh support (12) and the calf support (11) that are far apart from each other both extend downward. The upper side of the thigh support (12) and the calf support (11) forms a bearing space. The fixing unit (2) includes at least one sliding bracket (21), which is mounted on the lower leg bracket (11) and located at the bearing space position, and the sliding bracket (21) is provided with a threaded pin (3).

2. The knee flexion brace according to claim 1, characterized in that, The calf support (11) includes a first frame (111) and a second frame (112). With the length direction of the calf support (11) as the first direction, the first frame (111) can be telescopically installed on the second frame (112) along the first direction. The end of the second frame (112) away from the first frame (111) is rotatably connected to the calf support (11). The sliding bracket (21) is installed on the second frame (112).

3. A knee flexion brace according to claim 2, characterized in that, The sliding bracket (21) is provided with a sliding groove (211), and the second frame (112) can slide and cooperate with the sliding groove (211). The sliding bracket (21) is threaded with a positioning bolt (212), which can be inserted into the sliding groove (211) and abut against the second frame (112).

4. A knee flexion brace according to claim 3, characterized in that, The sliding bracket (21) includes a sliding seat and a support mounted on the sliding seat. The sliding seat and the support are connected by a universal joint (6). The sliding groove (211) is formed in the sliding seat, and the positioning bolt (212) is mounted on the sliding seat.

5. A knee flexion brace according to claim 4, characterized in that, The support includes two clamping parts (213) that move in a vertical direction toward each other or toward each other, and a clamping gap is formed between the two clamping parts (213), and the threaded pin (3) is disposed in the clamping gap.

6. A knee flexion brace according to claim 5, characterized in that, The clamping part (213) is provided with a locking groove on the side near the clamping gap, and the threaded pin (3) is located in the locking groove.

7. A knee flexion brace according to claim 2, characterized in that, The second frame (112) is equipped with binding straps (4).

8. A knee flexion brace according to claim 2, characterized in that, The fixing unit (2) further includes a connecting bracket (22), which is installed on the second frame (112). The connecting bracket (22) has a driving end (222) at its end along the first direction. The driving end (222) can be detachably connected to the sliding bracket (21). The driving end (222) can move in the first direction away from or towards the connecting bracket (22).

9. A knee flexion brace according to claim 8, characterized in that, The connecting bracket (22) is a hollow structure. A push rod (221) is provided inside the connecting bracket (22). The push rod (221) can move in a first direction. The driving end (222) is the end of the push rod (221) away from the connecting bracket (22). A driving component (5) for driving the push rod (221) to move is provided inside the connecting bracket (22).

10. A knee flexion brace according to claim 9, characterized in that, A scale is provided on the push rod (221).

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