A fixing bracket for lower limb fracture rehabilitation

Abstract

The present invention discloses a fixing bracket for lower limb fracture rehabilitation, which relates to the field of medical devices and includes a calf fixing component, a support plate, a fixing member, a fixing frame, a first support component, a second support component, a first limiting mechanism and a second limiting mechanism. The calf fixing component can be fixed to the calf of a patient. The fixing member is arranged on the support plate and is used to cooperate with the support plate to fix the patient's foot on the support plate. The top end of the fixing frame is connected to the calf fixing component. The first support component includes a U-shaped frame, a support shaft and two first connecting rods. For this fixing bracket for lower limb fracture rehabilitation, the patient's foot and calf are firmly fixed to the bracket through the calf fixing component and the fixing member. At the same time, during the rehabilitation stage, by releasing the restrictions of the first limiting mechanism and the second limiting mechanism, the patient can perform flexion and extension and inversion and eversion exercises of the ankle joint on the bracket, achieving a perfect combination of firm fixation and flexible rehabilitation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a fixing bracket for lower limb fracture rehabilitation. Background Art

[0002] During the rehabilitation process of lower limb fractures, especially ankle fractures, the use of a fixing bracket is crucial. Ankle fractures not only affect the stability and integrity of the ankle joint but may also be accompanied by damage to tissues such as the skin and ligaments. Therefore, during the rehabilitation stage, firmly fixing the part below the patient's calf is the key to avoiding secondary injuries.

[0003] The existing fixing brackets have a single fixing method. Most fixing brackets are integrally arranged or have only 1 to 2 degrees of freedom. This results in the difficulty for patients to flexibly adjust the bracket during the rehabilitation stage to meet different rehabilitation needs. Due to the rigidity of the fixing bracket, patients often need to remove the bracket before performing rehabilitation training, such as flexion and extension and inversion and eversion exercises of the ankle joint. This not only increases the rehabilitation difficulty but may also extend the rehabilitation period. Moreover, the movement amplitude of the existing fixing brackets is fixedly single and difficult to adjust according to the specific rehabilitation stage of the patient, which may lead to too large or too small amplitudes of rehabilitation training and is not conducive to the patient's rehabilitation process. Summary of the Invention

[0004] The purpose of the present invention is to provide a fixing bracket for lower limb fracture rehabilitation to solve the technical problems in the prior art that the fixing method of the fixing bracket is single, it is difficult to flexibly adjust the bracket to meet different rehabilitation needs, it is difficult to adjust according to the specific rehabilitation stage of the patient, and it is not conducive to the patient's rehabilitation process.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A fixing bracket for lower limb fracture rehabilitation, including a calf fixing component, a support plate, a fixing member, a fixing frame, a first support component, a second support component, a first limiting mechanism, and a second limiting mechanism. The calf fixing component can be fixed to the patient's calf. The fixing member is arranged on the support plate, and the fixing member is used to cooperate with the support plate to fix the patient's foot on the support plate. The top end of the fixing frame is connected to the calf fixing component;

[0006] The first support component includes a U-shaped frame, a support shaft, and two first connecting rods. One end of the support shaft is fixedly connected to the U-shaped frame, the outer side wall of the support shaft is rotatably connected to the fixing frame, the two first connecting rods are respectively arranged at both ends of the U-shaped frame, and the top ends of the two first connecting rods are respectively connected to the U-shaped frame through ball hinges, and the bottom ends of the two first connecting rods are respectively connected to the support plate through ball hinges;

[0007] The end of the support shaft away from the U-shaped frame is connected to the first limiting mechanism, and the first limiting mechanism can prevent the support shaft from rotating around its own axis;

[0008] The second support assembly includes a second connecting rod and a hinge seat. The second connecting rod is arranged at one end of the support plate. The bottom end of the second connecting rod is hinged to the support plate through a ball hinge, and the top end of the second connecting rod is rotatably connected to the hinge seat through a rotating shaft. The axial direction of the rotating shaft is parallel to the width direction of the support plate in the opposite direction. A guide member for restricting the movement of the hinge seat along the height direction of the fixed frame is connected to one side of the hinge seat;

[0009] One side of the hinge seat is connected to a second restricting mechanism, and the second restricting mechanism can hinder the movement of the hinge seat along the height direction of the fixed frame.

[0010] Furthermore, the first restricting mechanism includes an annular disk and a pin A. The annular disk is fixedly sleeved on the end of the support shaft away from the U-shaped frame. A plurality of pin holes A are arranged on the annular disk in a circumferential array centered on the axis of the annular disk. A threaded hole is formed on the fixed frame, and the axial direction of the threaded hole A is parallel to the axial direction of the pin hole A. The outer side wall of the pin A is threadedly connected to the inner wall of the threaded hole A.

[0011] Furthermore, the first restricting mechanism further includes a driving member A, a positioning rod A, and two limiting strips. One end of the positioning rod A is fixedly connected to the annular disk. The two limiting strips are respectively arranged on the upper and lower sides of the positioning rod A. One side of the driving member A is respectively connected to the two limiting strips, and the driving member A is used to drive the two limiting strips to move along the height direction of the fixed frame respectively.

[0012] Furthermore, the driving member A includes a screw A and a guide rod. The outer side wall of the guide rod is slidably connected to the two limiting strips respectively. The two ends of the guide rod are respectively fixedly connected to the fixed frame. Two threaded grooves with opposite helix directions are formed on the screw A. The screw A is threadedly connected to the two limiting strips through the two threaded grooves respectively. The outer side walls of the two ends of the screw A are respectively rotatably connected to the fixed frame.

[0013] Furthermore, the second restricting mechanism includes a positioning plate and a pin B. One side of the positioning plate is fixedly connected to the fixed frame. A plurality of pin holes B are arranged on the positioning plate at equal intervals along the height direction of the positioning plate in the opposite direction. A threaded hole B is formed on the hinge seat, and the axial direction of the threaded hole B is parallel to the axial direction of the pin hole B. The outer side wall of the pin B is threadedly connected to the inner wall of the threaded hole B.

[0014] Furthermore, the second restricting mechanism further includes a driving member B and two limiting blocks. One side of the two limiting blocks is respectively slidably connected to the fixed frame. The two limiting blocks are respectively arranged on the upper and lower sides of the hinge seat. One side of the driving member B is respectively connected to the two limiting blocks, and the driving member B is used to drive the two limiting blocks to move along the height direction of the fixed frame respectively.

[0015] Furthermore, the driving member B is a screw B. Two threaded grooves with opposite helix directions are formed on the screw B. The screw B is threadedly connected to the two limiting blocks through the two threaded grooves respectively. The outer side wall of the middle section of the screw B is rotatably connected to the fixed frame.

[0016] Further, the guiding member is a vertical rod. One end of the vertical rod penetrates through the hinge seat, and the outer sidewall of the vertical rod is slidably connected to the hinge seat. Both ends of the vertical rod are fixedly connected to the fixing frame.

[0017] Further, the calf fixing assembly includes a calf fixing plate and at least two A straps arranged on the calf fixing plate. The bottom end of the calf fixing plate is fixedly connected to the top end of the fixing frame.

[0018] Further, a flexible cushion layer is arranged on the inner side of the calf fixing plate.

[0019] Compared with the prior art, a fixing bracket for lower limb fracture rehabilitation provided by the present invention firmly fixes the patient's foot and calf parts to the bracket through the calf fixing assembly and the fixing member. At the same time, during the rehabilitation stage, by releasing the restrictions of the first restricting mechanism and the second restricting mechanism, the patient can perform flexion and extension, and internal and external rotation exercises of the ankle joint on the bracket, achieving a perfect combination of firm fixation and flexible rehabilitation;

[0020] Both the first restricting mechanism and the second restricting mechanism are provided with adjustable limiting structures. By adjusting the positions of the limiting strip and the limiting block, the moving range of the support shaft and the second connecting rod can be specifically limited, so as to achieve precise control of the rehabilitation training range of the patient and avoid secondary injury to the fracture site of the patient caused by too large a rehabilitation training range. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is the first external overall structure schematic diagram provided by the embodiment of the present invention;

[0023] Figure 2 It is the second external overall schematic diagram provided by the embodiment of the present invention;

[0024] Figure 3 It is the side view cross-sectional structure schematic diagram provided by the embodiment of the present invention;

[0025] Figure 4 It is provided by the embodiment of the present invention Figure 3 The enlarged schematic diagram at A in;

[0026] Figure 5 It is provided by the embodiment of the present invention Figure 3 The enlarged schematic diagram at B in;

[0027] Figure 6Combined schematic diagram of the annular disk, A socket, A positioning rod, support shaft and U-shaped frame provided by the embodiment of the present invention;

[0028] Figure 7 Combined schematic diagram of the first limiting mechanism, U-shaped frame, support shaft and fixed frame provided by the embodiment of the present invention;

[0029] Figure 8 Combined schematic diagram of the second limiting mechanism, support plate, second connecting rod, fixed frame and hinge seat provided by the embodiment of the present invention.

[0030] Explanation of reference numerals:

[0031] 1. Calf fixing assembly; 11. Calf fixing plate; 12. A strap; 2. Support plate; 21. Fixing member; 3. Fixed frame; 4. First support assembly; 41. U-shaped frame; 42. Support shaft; 43. First connecting rod; 5. Second support assembly; 51. Second connecting rod; 52. Hinge seat; 6. First limiting mechanism; 61. Annular disk; 62. A pin; 63. A socket; 64. A driving member; 641. A screw; 642. Guide rod; 65. A positioning rod; 66. Limiting strip; 7. Second limiting mechanism; 71. Positioning plate; 72. B pin; 73. B socket; 74. B driving member; 75. Limiting block; 8. Vertical rod. Detailed implementation manners

[0032] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] Please refer to Figures 1 to 3 , a fixing bracket for lower limb fracture rehabilitation, comprising a calf fixing assembly 1, a support plate 2, a fixing member 21, a fixed frame 3, a first support assembly 4, a second support assembly 5, a first limiting mechanism 6 and a second limiting mechanism 7. The calf fixing assembly 1 can be fixed to the calf of a patient. The fixing member 21 is arranged on the support plate 2, and the fixing member 21 is used to cooperate with the support plate 2 to fix the patient's foot on the support plate 2. The top end of the fixed frame 3 is connected to the calf fixing assembly 1;

[0034] The first support assembly 4 includes a U-shaped frame 41, a support shaft 42 and two first connecting rods 43. One end of the support shaft 42 is fixedly connected to the U-shaped frame 41, and the outer side wall of the support shaft 42 is rotatably connected to the fixed frame 3. The two first connecting rods 43 are respectively arranged at both ends of the U-shaped frame 41, and the top ends of the two first connecting rods 43 are respectively connected to the U-shaped frame 41 through ball hinges, and the bottom ends of the two first connecting rods 43 are respectively connected to the support plate 2 through ball hinges;

[0035] The end of the support shaft 42 away from the U-shaped frame 41 is connected to the first limiting mechanism 6, and the first limiting mechanism 6 can prevent the support shaft 42 from rotating around its own axis;

[0036] The second support assembly 5 includes a second connecting rod 51 and a hinge seat 52. The second connecting rod 51 is arranged at one end of the support plate 2. The bottom end of the second connecting rod 51 is hinged to the support plate 2 through a ball hinge. The top end of the second connecting rod 51 is rotatably connected to the hinge seat 52 through a rotating shaft. The axial direction of the rotating shaft is parallel to the reverse of the width direction of the support plate 2. A guide member for restricting the movement of the hinge seat 52 in the height direction of the fixed frame 3 is connected to one side of the hinge seat 52;

[0037] One side of the hinge seat 52 is connected to the second limiting mechanism 7, and the second limiting mechanism 7 can prevent the hinge seat 52 from moving in the height direction of the fixed frame 3.

[0038] Lower limb fractures in the human body include femoral fractures, patellar fractures, tibiofibular fractures, tarsal fractures of the foot, and ankle fractures. Among them, ankle fractures are one of the common lower limb fractures, usually caused by indirect violence such as traffic accidents, work injuries, and falls from heights. Ankle fractures not only affect the stability and integrity of the ankle joint but may also be accompanied by damage to tissues such as the skin and ligaments. Therefore, when dealing with ankle fractures, special attention needs to be paid to avoiding self-movement or attempting to reset to avoid aggravating the injury. For this reason, when ankle fracture patients are recovering, it is necessary to fix the patient's foot and calf parts through a fixing bracket to avoid secondary injuries;

[0039] However, existing fixing brackets are usually integrally arranged or have only 1 to 2 degrees of freedom. During the recovery stage of the patient, rehabilitation training can only be carried out after the fixing bracket is removed, such as flexion and extension and inversion and eversion exercises of the patient's ankle joint to restore the flexibility of the ankle joint. Moreover, the movement amplitude of existing fixing brackets is fixed and single, and cannot be adjusted according to the specific recovery stage of the patient;

[0040] Therefore, in this application, the fixing bracket of this application is fixed to the calf of the patient through the calf fixing assembly 1, and the patient's foot is fixed through the fixing member 21 and the support plate 2. When it is necessary to firmly fix the part below the patient's calf in the early stage of the recovery stage, the rotation of the support shaft 42 is blocked by the first limiting mechanism 6. At this time, since the support shaft 42 cannot rotate, the U-shaped frame 41 cannot rotate, and the two first connecting rods 43 at the bottom of the U-shaped frame 41 firmly support the support plate 2. At the same time, the second limiting mechanism 7 blocks the hinge seat 52 from moving in the reverse height direction of the fixed frame 3, and the hinge seat 52 and the second connecting rod 51 cannot move. At this time, the second connecting rod 51 and the two first connecting rods 43 jointly firmly support the support plate 2, so as to be able to firmly support and position the patient's angle;

[0041] When the patient is in the rehabilitation training stage, the first limiting mechanism 6 is freed from the rotation obstruction of the support shaft 42 and the second limiting mechanism 7 is freed from the movement obstruction of the articulated seat 52. When the patient performs inversion and eversion exercises of the foot, since the bottoms of the first connecting rod 43 and the second connecting rod 51 are connected to the support plate 2 through ball hinges, the support plate 2 can rotate with the connection between the second connecting rod 51 and the support plate 2 as a fulcrum to achieve inversion and eversion training of the patient's foot; when the patient performs ankle flexion and extension training, the articulated seat 52 can move in the opposite direction along the height of the fixing frame 3, that is, the second connecting rod 51 can move, and the support plate 2 can rotate with the connection between the two first connecting rods 43 and the support plate 2 as a fulcrum to achieve ankle flexion and extension training of the patient.

[0042] See also Figures 1 to 4 , Figure 6 and Figure 7 In one embodiment of the present invention, the first limiting mechanism 6 includes an annular disk 61 and an A plug pin 62. The annular disk 61 is fixedly sleeved on one end of the support shaft 42 away from the U-shaped frame 41. A plurality of A plug holes 63 are provided on the annular disk 61 in a circular array centered on the axis of the annular disk 61. A threaded hole is provided on the fixing frame 3 and the axial direction of the A threaded hole is parallel to the axial direction of the A plug hole 63. The outer wall of the A plug pin 62 is threadedly connected to the inner wall of the A threaded hole.

[0043] When it is necessary to prevent the rotation of the support shaft 42, the A latch 62 is rotated, and the A latch 62 moves along its own axial direction, and the end of the A latch 62 is inserted into one of the A insertion holes 63. At this time, under the action of the A latch 62, the annular disk 61 and the support shaft 42 cannot rotate; when the rotation of the support shaft 42 is not prevented, that is, when the patient can perform foot rehabilitation training, the A latch 62 is rotated in the opposite direction to disengage the A latch 62 from the A insertion hole 63;

[0044] In one embodiment of the present invention, the first limiting mechanism 6 further includes an A driving member 64, an A positioning rod 65 and two limiting bars 66, one end of the A positioning rod 65 is fixedly connected to the annular disk 61, the two limiting bars 66 are respectively arranged on the upper and lower sides of the A positioning rod 65, one side of the A driving member 64 is respectively connected to the two limiting bars 66, and the A driving member 64 is used to drive the two limiting bars 66 to move respectively along the height direction of the fixed frame 3;

[0045] When the patient is in different stages of the rehabilitation phase, when the A pin 62 is not inserted into any one of the A jacks 63, the A driving member 64 drives the two limiting bars 66 to move so that there is a certain distance between the two limiting bars 66. This distance is the moving space for the A positioning rod 65 to rotate with the annular disc 61, that is, the moving space for the annular disc 61 to rotate. Thus, the rotation amplitude of the support shaft 42 can be specifically limited, so as to limit the amplitude during the patient's rehabilitation training, so that the patient can perform rehabilitation training with different amplitudes in different rehabilitation stages, and avoid secondary injury to the fracture site of the patient due to excessive amplitude of the rehabilitation training;

[0046] In an embodiment of the present invention, the A driving member 64 includes an A screw rod 641 and a guide rod 642. The outer side walls of the guide rod 642 are respectively slidably connected to the two limiting bars 66. The two ends of the guide rod 642 are respectively fixedly connected to the fixing frame 3. Two thread grooves with opposite helix directions are provided on the A screw rod 641. The A screw rod 641 is threadedly connected to the two limiting bars 66 through the two thread grooves respectively. The outer side walls of the two ends of the A screw rod 641 are respectively rotatably connected to the fixing frame 3;

[0047] By rotating the A screw rod 641 and under the limitation of the guide rod 642, the A screw rod 641 drives the two limiting bars 66 to move towards or away from each other through the two thread grooves with opposite helix directions on it, so as to realize the adjustment of the positions of the limiting bars 66.

[0048] Please refer to Figures 1 to 3 、 Figure 5 and Figure 8 In an embodiment of the present invention, the second limiting mechanism 7 includes a positioning plate 71 and a B pin 72. One side of the positioning plate 71 is fixedly connected to the fixing frame 3. A plurality of B jacks 73 are equidistantly arranged on the positioning plate 71 along the height direction of the positioning plate 71. A B threaded hole is provided on the hinge seat 52, and the axial direction of the B threaded hole is parallel to the axial direction of the B jacks 73. The outer side wall of the B pin 72 is threadedly connected to the inner wall of the B threaded hole;

[0049] When it is necessary to prevent the movement of the hinge seat 52, rotate the B pin 72, and the B pin 72 moves along its own axial direction. The end of the B pin 72 is inserted into one of the B jacks 73. At this time, under the action of the B pin 72, the hinge seat 52 cannot move along the height direction of the fixing frame 3; when the movement of the hinge seat 52 is not prevented, that is, when the patient can perform foot rehabilitation training, rotate the B pin 72 in the reverse direction to make the B pin 72 disengage from the B jack 73;

[0050] In an embodiment of the present invention, the second limiting mechanism 7 further includes a B driving member 74 and two limiting blocks 75. One side of each of the two limiting blocks 75 is slidably connected to the fixing frame 3, and the two limiting blocks 75 are respectively arranged on the upper and lower sides of the hinge seat 52. One side of the B driving member 74 is respectively connected to the two limiting blocks 75, and the B driving member 74 is used to drive the two limiting blocks 75 to move respectively along the height direction of the fixing frame 3;

[0051] Similarly, when the patient is undergoing stage-by-stage rehabilitation training, at different rehabilitation training stages, the B pin 72 is disengaged from the B jack 73, and the B driving member 74 is used to drive the two limiting blocks 75 to move until there is a certain distance between the two limiting blocks 75. This distance is the moving space for the hinge seat 52 to move, so as to specifically limit the moving amplitude of the second link 51, thereby realizing the limitation of the amplitude during the patient's rehabilitation training, facilitating the patient to perform rehabilitation training with different amplitudes at different rehabilitation stages, and avoiding secondary injuries to the fracture site of the patient due to excessive amplitude of the rehabilitation training.

[0052] In an embodiment of the present invention, the B driving member 74 is a B screw rod, and two thread grooves with opposite helix directions are formed on the B screw rod. The B screw rod is threadedly connected to the two limiting blocks 75 through the two thread grooves respectively, and the outer side wall of the middle section of the B screw rod is rotatably connected to the fixing frame 3;

[0053] By rotating the B screw rod, since one side of the limiting block 75 is slidably connected to the fixing frame 3, the B screw rod drives the two limiting blocks 75 to move towards or away from each other through the two thread grooves with opposite helix directions on it, thereby realizing the adjustment of the position of the limiting block 75.

[0054] In an embodiment of the present invention, the guiding member is a vertical rod 8. One end of the vertical rod 8 penetrates through the hinge seat 52 and the outer side wall of the vertical rod 8 is slidably connected to the hinge seat 52. The two ends of the vertical rod 8 are respectively fixedly connected to the fixing frame 3, and the hinge seat 52 is guided by the vertical rod 8 to make the movement of the hinge seat 52 smoother.

[0055] In an embodiment of the present invention, the calf fixing assembly 1 includes a calf fixing plate 11 and at least two A straps 12 arranged on the calf fixing plate 11. One end of the A strap 12 is fixedly connected to the calf fixing plate 11, and the bottom end of the calf fixing plate 11 is fixedly connected to the top end of the fixing frame 3;

[0056] The connection mode between the A strap 12 and the calf fixing plate 11 can be: the other end of the A strap 12 is provided with a hook surface magic tape, and the calf fixing plate 11 is provided with a loop surface magic tape that cooperates with the hook surface magic tape;

[0057] It can also be that the other end of the A strap 12 is connected to the calf fixing plate 11 by means of a buckle, so as to realize that the A strap 12 cooperates with the calf fixing plate 11 to fix the fixing bracket of the present application to the calf of the patient.

[0058] In an embodiment of the present invention, the fixing member 21 includes a toe portion and a B strap provided on the support plate 2. The connection manner between the B strap and the support plate 2 can be:

[0059] One end of the B strap is fixedly connected to the support plate 2, and the other end of the B strap is provided with a hook surface magic tape. A hair surface magic tape is provided on the calf support plate 2 and is matched with the hook surface magic tape;

[0060] It can also be that the other end of the B strap is connected to the support plate 2 by means of a buckle, so as to realize that the B strap cooperates with the support plate 2 and the toe portion to fix the patient's foot on the support plate 2.

[0061] In an embodiment of the present invention, a flexible cushion layer is provided on the inner side of the calf fixing plate 11, so that the patient is more comfortable when wearing the fixing bracket of the present application.

[0062] Only some exemplary embodiments of the present invention are described above by way of illustration. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A fixing bracket for lower limb fracture rehabilitation, characterized in that, It includes a calf fixing component (1), a support plate (2), a fixing piece (21), a fixing frame (3), a first support component (4), a second support component (5), a first limiting mechanism (6) and a second limiting mechanism (7). The calf fixing component (1) can be fixed to the calf of the patient. The fixing piece (21) is arranged on the support plate (2), and the fixing piece (21) is used to cooperate with the support plate (2) to fix the patient's foot on the support plate (2). The top end of the fixing frame (3) is connected to the calf fixing component (1); The first support component (4) includes a U-shaped frame (41), a support shaft (42), and two first connecting rods (43). One end of the support shaft (42) is fixedly connected to the U-shaped frame (41), and the outer side wall of the support shaft (42) is rotatably connected to the fixing frame (3). The two first connecting rods (43) are respectively arranged at both ends of the U-shaped frame (41), and the top ends of the two first connecting rods (43) are respectively connected to the U-shaped frame (41) through ball hinges. The bottom ends of the two first connecting rods (43) are respectively connected to the support plate (2) through ball hinges; One end of the support shaft (42) away from the U-shaped frame (41) is connected to the first limiting mechanism (6), and the first limiting mechanism (6) can prevent the support shaft (42) from rotating around its own axis; The second support component (5) includes a second connecting rod (51) and a hinge seat (52). The second connecting rod (51) is arranged at one end of the support plate (2). The bottom end of the second connecting rod (51) is hinged to the support plate (2) through a ball hinge. The top end of the second connecting rod (51) is rotatably connected to the hinge seat (52) through a rotating shaft. The axial direction of the rotating shaft is parallel to the reverse of the width direction of the support plate (2). One side of the hinge seat (52) is connected with a guiding member for restricting the movement of the hinge seat (52) in the height direction of the fixing frame (3); The guiding member is a vertical rod (8). One end of the vertical rod (8) penetrates through the hinge seat (52) and the outer side wall of the vertical rod (8) is slidably connected to the hinge seat (52). Both ends of the vertical rod (8) are fixedly connected to the fixing frame (3); One side of the hinge seat (52) is connected to the second limiting mechanism (7), and the second limiting mechanism (7) can prevent the hinge seat (52) from moving in the height direction of the fixing frame (3).

2. The fixed bracket for lower limb fracture rehabilitation according to claim 1, characterized in that, The first limiting mechanism (6) includes an annular disc (61) and an A pin (62). The annular disc (61) is fixedly sleeved on one end of the support shaft (42) away from the U-shaped frame (41). A plurality of A insertion holes (63) are arranged on the annular disc (61) in a circumferential array centered on the axis of the annular disc (61). A threaded hole is opened on the fixing frame (3) and the axial direction of the A threaded hole is parallel to the axial direction of the A insertion hole (63). The outer side wall of the A pin (62) is threadedly connected to the inner wall of the A threaded hole.

3. The lower limb fracture rehabilitation fixing bracket according to claim 2, wherein, The first limiting mechanism (6) further includes an A driving member (64), an A positioning rod (65), and two limiting strips (66). One end of the A positioning rod (65) is fixedly connected to the annular disc (61). The two limiting strips (66) are respectively arranged on the upper and lower sides of the A positioning rod (65). One side of the A driving member (64) is respectively connected to the two limiting strips (66). The A driving member (64) is used to drive the two limiting strips (66) to move respectively along the height direction of the fixing frame (3).

4. The lower limb fracture rehabilitation fixing bracket according to claim 3, characterized in that, The A driving member (64) includes an A screw rod (641) and a guide rod (642). The outer side walls of the guide rod (642) are respectively slidably connected to the two limiting strips (66). The two ends of the guide rod (642) are respectively fixedly connected to the fixing frame (3). Two thread grooves with opposite helix directions are provided on the A screw rod (641). The A screw rod (641) is threadedly connected to the two limiting strips (66) respectively through the two thread grooves. The outer side walls of the two ends of the A screw rod (641) are respectively rotatably connected to the fixing frame (3).

5. The fixed bracket for lower limb fracture rehabilitation according to claim 1, characterized in that, The second limiting mechanism (7) includes a positioning plate (71) and a B plug pin (72). One side of the positioning plate (71) is fixedly connected to the fixing frame (3). A plurality of B jacks (73) are equidistantly arranged on the positioning plate (71) along the reverse height direction of the positioning plate (71). A B threaded hole is provided on the hinge seat (52), and the axial direction of the B threaded hole is parallel to the axial direction of the B jack (73). The outer side wall of the B plug pin (72) is threadedly connected to the inner wall of the B threaded hole.

6. The fixed bracket for lower limb fracture rehabilitation according to claim 5, characterized in that, The second limiting mechanism (7) further includes a B driving member (74) and two limiting blocks (75). One side of the two limiting blocks (75) is respectively slidably connected to the fixing frame (3). The two limiting blocks (75) are respectively arranged on the upper and lower sides of the hinge seat (52). One side of the B driving member (74) is respectively connected to the two limiting blocks (75). The B driving member (74) is used to drive the two limiting blocks (75) to move respectively along the height direction of the fixing frame (3).

7. The lower limb fracture rehabilitation fixing bracket according to claim 6, characterized in that, The B driving member (74) is a B screw rod. Two thread grooves with opposite helix directions are provided on the B screw rod. The B screw rod is threadedly connected to the two limiting blocks (75) respectively through the two thread grooves. The outer side wall of the middle section of the B screw rod is rotatably connected to the fixing frame (3).

8. The fixed bracket for lower limb fracture rehabilitation according to claim 1, characterized in that, The calf fixing assembly (1) includes a calf fixing plate (11) and at least two A straps (12) arranged on the calf fixing plate (11). The bottom end of the calf fixing plate (11) is fixedly connected to the top end of the fixing frame (3).

9. The fixed bracket for lower limb fracture rehabilitation according to claim 1, characterized in that, A flexible cushion layer is arranged on the inner side of the calf fixing plate (11).

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