Adjustable force-limiting lower limb load-bearing brace

Abstract

The utility model relates to the technical field of medical instruments, and provides an adjustable force-limiting lower limb load-bearing brace, which comprises an adjustable force-limiting device, a force-limiting device, a force-limiting device and a force-limiting device, the supporting device comprises a side plate and a bottom plate, and the bottom plate is fixedly connected with the side plate; the pedal device comprises a pedal plate, a first side rod and a second side rod; and the compression spring is arranged between the bottom plate and the pedal plate. The lower limb rehabilitation training device has the advantages that the strength of lower limbs in rehabilitation exercise is limited by utilizing the characteristics of static friction and dynamic friction of contact between the sliding block and the force limiting block; the downward movement of the pedal is easily perceived by the rehabilitation training personnel, so that the rehabilitation personnel can conveniently master the strength; the force limiting block can be replaced, different force limiting blocks can be selected, the friction characteristic between the sliding block and the force limiting block is changed, therefore, the limited force is adjusted according to the rehabilitation condition, and the rehabilitation training effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an adjustable force-limited lower limb weight-bearing brace. Background Art

[0002] The lower limbs refer to the part of the human body below the abdomen. They include the buttocks, thighs, knees, shins and feet. When a fracture occurs in the tibia of the lower limb, lower limb rehabilitation training is required after fracture reduction surgery. Common lower limb rehabilitation training static exercises: keep the lower limb muscles contracted and relaxed, 500-1000 times a day, but do not move the joints. This is suitable for early postoperative training, which can accelerate blood circulation, eliminate swelling, and prevent deep vein thrombosis.

[0003] See also Figure 1 At present, the rehabilitation personnel put the soles of their lower limbs on the floor scale and apply a certain amount of pressure to the floor scale. At this time, the floor scale displays the pressure value. Then, they relax their soles, and the pressure value of the floor scale returns to zero. Repeat the pressure and relaxation to achieve static exercises for lower limb rehabilitation training. In the process of multiple pressure applications, it is difficult for the rehabilitation personnel to master the pressure of the lower limbs. If too much force is applied during the rehabilitation training, and the lower limbs are applied with a force exceeding the prescribed force on the floor scale, it is easy to damage the fracture position of the lower leg, which is not conducive to the rehabilitation of the lower leg fracture.

[0004] Therefore, how to limit the strength of the lower limb rehabilitation exercises so that the rehabilitation personnel can control the strength and adjust the limited strength according to the rehabilitation situation is a technical problem that needs to be solved urgently in this field. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an adjustable force-limited lower limb weight-bearing brace to limit the force of rehabilitation exercises for the lower limbs, so as to facilitate rehabilitation personnel to control the force and adjust the limited force according to the rehabilitation situation.

[0006] The utility model is implemented as follows: an adjustable force-limited lower limb weight-bearing brace, comprising:

[0007] The adjustable force limiting device comprises a shell, a force limiting block, a slider and a pin shaft, wherein the shell has an active cavity inside, an entrance and exit of the force limiting block is provided on the outer side, and a pin shaft moving hole is provided on the inner side, the force limiting block is detachably connected to the active cavity, the slider is located in the active cavity, the slider can be in frictional contact with the outer surface of the force limiting block, and the pin shaft is fixedly connected to the slider;

[0008] A supporting device, comprising a side plate and a bottom plate, wherein the side plate is fixedly connected to the shell, and the bottom plate is fixedly connected to the side plate;

[0009] A pedal device, comprising a foot pedal, a first side rod and a second side rod, wherein the foot pedal is located above the bottom plate, the first side rod is fixedly connected to the foot pedal, the lower end of the second side rod is hinged to the first side rod, and the upper end of the second side rod is hinged to the pin shaft;

[0010] A compression spring is arranged between the base plate and the foot pedal.

[0011] Furthermore, it also includes a screw, a locking hole is opened at the bottom of the shell, a screw hole is opened at the bottom of the force limiting block, and the screw passes through the locking hole and is locked and connected with the screw hole.

[0012] Furthermore, the force limiting block protrudes from the shell.

[0013] Furthermore, there are a plurality of compression springs, which are evenly spaced and distributed between the base plate and the foot pedal.

[0014] Furthermore, the adjustable force limiting device, the side plate, the first side rod, and the second side rod are each in two pieces, and are respectively located on the left and right sides of the bottom plate and the foot pedal.

[0015] Furthermore, it also includes boots, the base plate is fixedly connected to the bottom of the boots, the foot pedal, compression spring, side plate, first side rod, and second side rod are all located inside the boots, the shell is fixedly connected to the side wall of the boots, and the force limiting block entrance and exit are located outside the boots.

[0016] Furthermore, it also includes a lower limb wearing ring, which is fixedly connected to the top of the shell.

[0017] Furthermore, it also includes a height adjuster, which includes a latch, a first adjusting rod and a second adjusting rod, the first adjusting rod is fixedly connected to the top of the shell, the upper end of the first adjusting rod is provided with a communicating sliding hole and a positioning hole, the second adjusting rod is fixedly connected to the lower limb wearing ring, the lower end of the second adjusting rod is provided with a plurality of height adjustment holes, the second adjusting rod is slidably connected to the first adjusting rod, and the latch passes through the positioning hole and is inserted into one of the height adjustment holes.

[0018] Furthermore, the force-limiting block is a wedge-shaped block, and the sliding block can be in frictional contact with the inclined surface of the wedge-shaped block and can also move back and forth above the wedge-shaped block.

[0019] Furthermore, the adjustable force limiting device also includes a tension spring, the lower end of the tension spring is fixedly connected to the pin shaft, and the upper end is fixedly connected to the top of the shell, the force limiting block is a special-shaped block, the sliding block can frictionally contact the top surface of the special-shaped block, and can also circulate around the special-shaped block.

[0020] The advantages of the utility model are: utilizing the characteristics of static friction and dynamic friction between the slider and the force-limiting block to limit the force of the rehabilitation exercise of the lower limbs; the person doing rehabilitation training puts the sole of the foot on the foot pedal and continuously increases the downward pressure. When the static friction between the slider and the force-limiting block changes to dynamic friction, that is, when the slider changes from being stationary to sliding, the force applied by the person doing rehabilitation training reaches the specified force, and the downward movement of the foot pedal is easily perceived by the person doing rehabilitation training, which is convenient for the rehabilitation person to grasp the force. If the foot pedal does not move downward, it means that the force applied by the person doing rehabilitation training does not exceed the specified force value; the force-limiting block is replaceable, and different force-limiting blocks are selected to change the friction characteristics between the slider and the force-limiting block, thereby adjusting the limited force according to the rehabilitation situation; compared with the rehabilitation training method of the floor scale of the background technology, the utility model effectively avoids the use of excessive force during the rehabilitation training process, which helps to improve the effect of rehabilitation training. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of using a floor scale for rehabilitation training in the background art.

[0023] Figure 2 It is a structural schematic diagram of the adjustable force-limited lower limb weight-bearing brace of the utility model.

[0024] Figure 3 yes Figure 2 Cross-sectional view in the AA direction.

[0025] Figure 4 It is a schematic diagram of the internal structure of the adjustable force limiting device when the force limiting block in the utility model is a wedge-shaped block.

[0026] Figure 5 yes Figure 4 Schematic diagram of the middle slider moving downward along the inclined surface of the wedge block.

[0027] Figure 6 It is a schematic diagram of the external structure of the adjustable force limiting device in the utility model.

[0028] Figure 7 yes Figure 6 Cross-sectional view along the BB direction.

[0029] Figure 8 yes Figure 7 Schematic diagram of the housing after removing the force limit block, slider and pin.

[0030] Fig. 9 It is a schematic diagram of the utility model in which the foot pedal moves downward so that the slider moves downward.

[0031] Fig.10 It is a schematic diagram of the internal structure of the boots in the utility model.

[0032] Fig.11 It is a schematic diagram of the internal structure of the height adjuster in the utility model.

[0033] Fig.12 It is a schematic diagram of the sole of the foot and the calf entering the boot in the utility model.

[0034] Fig.13 It is a schematic diagram of the movement tracks of the slider and the pin shaft when the force-limiting block in the utility model is a special-shaped block.

[0035] Fig.14 It is a schematic diagram of the pin shaft at the top position when the force limiting block in the novel is a special-shaped block.

[0036] Fig.15 It is a schematic diagram of the pin shaft at the bottom position when the force limiting block in the novel is a special-shaped block.

[0037] Figure numerals: adjustable force limiting device 1; shell 11; movable chamber 111; force limiting block entrance and exit 112; pin shaft moving hole 113; force limiting block 12; slider 13; pin shaft 14; tension spring 15; support device 2; side plate 21; bottom plate 22; foot pedal device 3; foot pedal 31; first side rod 32; second side rod 33; compression spring 4; screw 5; boot 6; lower limb wearing ring 7; height adjuster 8; pin 81; first adjusting rod 82; sliding hole 821; second adjusting rod 83; height adjustment hole 831; lower limb 9; calf 91; sole 92; floor scale 10. DETAILED DESCRIPTION

[0038] The embodiment of the utility model provides an adjustable force-limited lower limb weight-bearing brace, with the purpose of providing a medical device with a novel structure for rehabilitation training after lower limb fracture surgery, which limits the force of rehabilitation exercises for the lower limbs, makes it easy for rehabilitation personnel to control the force and adjust the limited force according to the rehabilitation situation; compared with the rehabilitation training method of stepping on a floor scale in the background technology, the utility model effectively avoids the use of excessive force during rehabilitation training, and helps to improve the effect of rehabilitation training.

[0039] The overall idea of ​​the technical solution in the embodiment of the utility model is as follows:

[0040] The characteristics of static friction and dynamic friction in contact between the slider and the force-limiting block are used to limit the strength of the rehabilitation exercise of the lower limbs; the person doing rehabilitation training sits on a chair, puts the soles of the feet on the foot pedal, and the calves apply pressure on the foot pedal through the soles of the feet. As the applied pressure increases, the foot pedal transmits the force from the first side rod, the second side rod, and the pin to the slider. When the slider is in a stationary state, it means that the applied pressure is within the specified strength. When the slider slides on the outer surface of the force-limiting block, that is, the static friction between the slider and the force-limiting block changes to dynamic friction, it means that the applied pressure reaches the specified strength. At this time, the person doing rehabilitation training feels that the foot pedal moves downward, which reminds the person doing rehabilitation training not to continue to increase the applied pressure and limit the strength of the rehabilitation exercise of the lower limbs; in the process of the foot pedal moving downward, the compression spring between the foot pedal and the bottom plate is compressed, and the compression spring plays a buffering role. When the person doing rehabilitation training releases the sole of the foot, the compression spring resets to move the foot pedal upward, thereby returning the slider to the starting position of the force-limiting block.

[0041] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0042] See also Figures 1 to 15 , a preferred embodiment of the utility model.

[0043] An adjustable force-limited lower limb weight-bearing brace, comprising:

[0044] The adjustable force limiting device 1 includes a housing 11, a force limiting block 12, a slider 13 and a pin 14. The housing 11 has an active cavity 111 inside, an entrance 112 of the force limiting block 12 is provided on the outer side, and a moving hole 113 of the pin 14 is provided on the inner side. The force limiting block 12 is detachably connected to the active cavity 111. The slider 13 is located in the active cavity 111. The slider 13 can be in frictional contact with the outer surface of the force limiting block 12. The pin 14 is fixedly connected to the slider 13. The static friction and dynamic friction characteristics of the contact between the slider 13 and the force limiting block 12 are used to limit the strength of the rehabilitation exercise of the lower limbs. The force limiting block 12 is replaceable. When it is replaced with a force limiting block 12 of different material or different surface roughness, the static friction force and dynamic friction force between the force limiting block 12 and the slider 13 will change, so that the limited strength can be adjusted according to the rehabilitation situation. Therefore, there are multiple force limiting blocks 12 to choose from.

[0045] The supporting device 2 includes a side plate 21 and a bottom plate 22 . The side plate 21 is fixedly connected to the housing 11 , and the bottom plate 22 is fixedly connected to the side plate 21 . The bottom plate 22 is placed on the ground, and the side plate 21 supports the adjustable force limiting device 1 .

[0046] The pedal device 3 includes a foot pedal 31, a first side rod 32 and a second side rod 33. The foot pedal 31 is located above the base plate 22. The first side rod 32 is fixedly connected to the foot pedal 31. The lower end of the second side rod 33 is hinged to the first side rod 32, and the upper end is hinged to the pin shaft 14. The force of the up and down movement of the foot pedal 31 is transmitted to the lock shaft by the first side rod 32 and the second side rod 33.

[0047] The compression spring 4 is arranged between the bottom plate 22 and the foot pedal 31. The compression spring 4 plays a buffering role.

[0048] After the operation of fracture of calf 91 of lower limb 9, the person who needs rehabilitation training sits on the chair and puts sole 92 of the foot on foot pedal 31. The leg continuously increases downward pressure on foot pedal 31 through sole 92, and foot pedal 31 transmits the pressure to slider 13 through first side rod 32, second side rod 33 and pin 14. When slider 13 is stationary on the outer surface of force limiting block 12, it indicates that the applied pressure is within the specified force, and there is static friction force between slider 13 and force limiting block 12; as the pressure applied by sole 92 increases, when slider 13 slides on the outer surface of force limiting block 12, that is, static friction force between slider 13 and force limiting block 12 changes to dynamic friction force, it indicates that the applied pressure reaches the specified force, and foot pedal 31 moves downward at this time. When the person who is doing rehabilitation training senses that foot pedal 31 moves downward, there is no need to continue to increase the applied pressure, which effectively avoids excessive force during rehabilitation training and helps to improve the effect of rehabilitation training. When the foot pedal 31 moves downward, the compression spring 4 is in a compressed state. When the foot pedal 31 is released, the compression spring 4 is reset to move the foot pedal 31 upward, thereby returning the slider 13 to the starting position of the force limiting block 12 in the limited space of the active cavity 111.

[0049] It also includes a screw 5. A locking hole is provided at the bottom of the housing 11. A screw hole is provided at the bottom of the force-limiting block 12. The screw 5 passes through the locking hole and is locked with the screw hole. According to the rehabilitation situation, the limited force needs to be adjusted. For example, to increase the limited force, the corresponding force-limiting block 12 is selected to increase the dynamic friction force between the force-limiting block 12 and the slider 13; loosen the screw 5, replace the force-limiting block 12, and then tighten the screw 5.

[0050] The force limiting block 12 protrudes from the housing 11. Grasping the protruding portion of the force limiting block 12 facilitates the extraction of the force limiting block 12 during replacement.

[0051] There are a plurality of compression springs 4, which are evenly spaced and distributed between the bottom plate 22 and the footrest 31. This prevents the bottom plate 22 from tilting excessively during the up and down movement, thereby improving the movement stability of the bottom plate 22.

[0052] The adjustable force limiting device 1 , the side plate 21 , the first side rod 32 , and the second side rod 33 each have two, which are respectively located on the left and right sides of the bottom plate 22 and the foot pedal 31 .

[0053] It also includes a boot 6, the bottom plate 22 is fixedly connected to the bottom of the boot 6, the foot pedal 31, the compression spring 4, the side plate 21, the first side rod 32, and the second side rod 33 are all located inside the boot 6, the housing 11 is fixedly connected to the side wall of the boot 6, and the entrance 112 of the force limiting block 12 is located outside the boot 6. A person who is doing rehabilitation training can wear this boot 6 on one foot and walk with a crutch while doing rehabilitation training, which improves convenience; the way of stepping on the floor scale 10 in the background technology is inconvenient to carry the floor scale 10 for walking.

[0054] It also includes a lower limb wearing ring 7, which is fixedly connected to the top of the housing 11. The lower limb wearing ring 7 is used to be tied to the leg of the lower limb 9 to prevent the boot 6 from falling off when walking. The lower limb wearing ring is also matched with a height adjuster to enable the patient to stand for rehabilitation training.

[0055] It also includes a height adjuster 8, which includes a latch 81, a first adjustment rod 82 and a second adjustment rod 83. The first adjustment rod 82 is fixedly connected to the top of the boot 6. The upper end of the first adjustment rod 82 is provided with a sliding hole 821 and a positioning hole that communicate with each other. The second adjustment rod 83 is fixedly connected to the lower limb wearing ring 7. The lower end of the second adjustment rod 83 is provided with a plurality of height adjustment holes 831. The second adjustment rod 83 is slidably connected to the first adjustment rod 82. The latch 81 passes through the positioning hole and is inserted into one of the height adjustment holes 831. The latch 81 passes through different height adjustment holes 831 to change the telescopic length of the first adjustment rod 82 and the second adjustment rod 83, so that the lower limb wearing ring 7 can be tied to the legs at different positions.

[0056] For patients with tibia and fibula fractures: the lower limb wearing ring 7 is worn at the calf below the knee joint and above the tibia and fibula fracture end, and the caliber of the lower limb wearing ring 7 is adjustable, and the caliber of the lower limb wearing ring 7 is smaller than the circumference of the knee joint and can also slide up and down at the calf. According to the length of the patient's calf, the lower limb wearing ring 7 is adjusted to a suitable height below the knee joint through the height adjuster 8. When the patient is in a standing state, he steps on the pedal 31 with the leg that needs rehabilitation training, so that the slider 13 slides from the top position of the force limiting block 12 to the bottom position of the force limiting block 12. At this time, the patient's calf sinks and moves and slides with the lower limb wearing ring 7. When the slider 13 reaches the bottom position of the force limiting block 12, the lower limb wearing ring 7 just touches the knee joint position, so that the lower limb wearing ring 7 cooperates with the height adjuster 8 to support the knee joint and share the body weight above the knee joint. The fractured end of the tibia and fibula on this side only bears the rebound potential energy of the compression spring 4. In this way, the patient can avoid excessive body pressure on the fractured end of the tibia and fibula when stepping on the pedal while standing for rehabilitation training.

[0057] For patients with femoral shaft fractures: the shape of the lower limb wearing ring 7 conforms to the structure of the human perineum, and the lower limb wearing ring 7 is worn on the thigh below the perineum and above the femoral shaft fracture end. The caliber of the lower limb wearing ring 7 is adjustable, and the caliber of the lower limb wearing ring 7 is smaller than the circumference of the upper end of the thigh and can also slide up and down on the thigh. According to the length of the patient's lower limbs, the lower limb wearing ring 7 is adjusted to a suitable height slightly below the human perineum through the height adjuster 8. When the patient is in a standing state, he steps on the pedal 31 with the leg that needs rehabilitation training, so that the slider 13 slides from the top position of the force limiting block 12 to the bottom position of the force limiting block 12. At this time, the patient's lower limbs sink and move and slide with the lower limb wearing ring 7. When the slider 13 reaches the bottom position of the force limiting block 12, the lower limb wearing ring 7 just rests against the perineum of the human body, so that the lower limb wearing ring 7 cooperates with the height adjuster 8 to support the perineum of the human body and share the weight of the human body above the perineum. The fractured end of the femoral shaft on this side only bears the rebound potential energy of the compression spring 4. In this way, the patient can avoid excessive body pressure on the femoral shaft fracture when stepping on the pedal while standing for rehabilitation training.

[0058] The force limiting block 12 is a wedge-shaped block, and the slider 13 can be in frictional contact with the inclined surface of the wedge-shaped block and can also move back and forth above the wedge-shaped block. The person doing rehabilitation training repeatedly steps on and releases the foot pedal 31, and the force is transmitted through the first side rod 32 and the second side rod 33. When the foot pedal 31 moves downward, the slider 13 slides downward along the inclined surface of the wedge-shaped block. When the compression spring 4 is reset to make the foot pedal 31 move upward, the slider 13 also moves upward. At this time, the slider 13 can be separated from the wedge block in the active cavity 111 or move upward along the inclined surface of the wedge block to return to the starting position of the wedge block.

[0059] In another embodiment of the utility model, the adjustable force limiting device further comprises a tension spring 15, the lower end of the tension spring 15 is fixedly connected to the pin 14, and the upper end is fixedly connected to the top of the housing 11, the force limiting block 12 is a special-shaped block, and the slider 13 can be in frictional contact with the top surface of the special-shaped block, and can also circulate around the special-shaped block. The person doing rehabilitation training repeatedly steps on and releases the foot pedal 31, and the force is transmitted through the first side rod 32 and the second side rod 33. When the foot pedal 31 moves downward, the slider 13 slides downward along the top surface of the special-shaped block, and the tension spring 15 begins to stretch, and then moves from the top of the special-shaped block to the bottom; when the foot pedal 31 is released, the compression spring 4 resets to make the foot pedal 31 move upward, and the tension spring 15 resets to move the pin 14 upward, and the slider 13 also moves upward accordingly, and the slider 13 automatically moves from the bottom of the special-shaped block to the top, and returns to the starting position of the special-shaped block. The tension spring 15 is provided to help ensure that the slide block 13 returns from the bottom position of the special-shaped block to the top position of the special-shaped block.

[0060] The use of the adjustable force-limited lower limb weight-bearing brace of the utility model is as follows:

[0061] Static exercises for lower limb rehabilitation training. As the fracture of the calf 91 is cured after surgery, the strength of stepping on the pedal 31 can be increased in stages, such as training with five kilograms of force in the early stage, training with ten kilograms of force in the middle stage, and training with twenty kilograms of force in the later stage. Therefore, the dynamic friction force between the force limiting block 12 and the slider 13 is selected to be five kilograms of force first, and the force limiting block 12 is installed on the housing 11. The personnel doing rehabilitation training use the adjustable force-limiting lower limb weight-bearing brace of the utility model, and repeatedly step on and release the pedal 31, 500-1000 times a day, so that the calf 91 of the lower limb 9 can withstand a force of about five kilograms of force, avoiding excessive force to cause leg injury. Replace the force limiting block 12 in the middle stage, select the dynamic friction force between the force limiting block 12 and the slider 13 to be ten kilograms of force, and the personnel doing rehabilitation training repeatedly step on and release the pedal 31, 500-1000 times a day, so that the calf 91 of the lower limb 9 can withstand a force of about ten kilograms of force. Later, the force limiting block 12 is replaced, and the dynamic friction force between the force limiting block 12 and the slider 13 is selected to be 20 kgf, and the calf 91 undergoing rehabilitation training is subjected to 20 kgf. According to the fracture rehabilitation situation, increasing the rehabilitation strength in stages helps to improve the effect of rehabilitation training.

[0062] Although the specific implementation methods of the present invention are described above, those skilled in the art should understand that the specific embodiments described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. An adjustable force-limited lower limb weight-bearing brace, characterized in that: include: The adjustable force limiting device comprises a shell, a force limiting block, a slider and a pin shaft, wherein the shell has an active cavity inside, an entrance and exit of the force limiting block is provided on the outer side, and a pin shaft moving hole is provided on the inner side, the force limiting block is detachably connected to the active cavity, the slider is located in the active cavity, the slider can be in frictional contact with the outer surface of the force limiting block, and the pin shaft is fixedly connected to the slider; A supporting device, comprising a side plate and a bottom plate, wherein the side plate is fixedly connected to the shell, and the bottom plate is fixedly connected to the side plate; A pedal device, comprising a foot pedal, a first side rod and a second side rod, wherein the foot pedal is located above the bottom plate, the first side rod is fixedly connected to the foot pedal, the lower end of the second side rod is hinged to the first side rod, and the upper end of the second side rod is hinged to the pin shaft; A compression spring is arranged between the base plate and the foot pedal.

2. The adjustable force-limited lower limb weight-bearing brace according to claim 1, characterized in that: It also includes a screw. A locking hole is opened at the bottom of the shell, and a screw hole is opened at the bottom of the force limiting block. The screw passes through the locking hole and is locked and connected with the screw hole.

3. The adjustable force-limited lower limb weight-bearing brace according to claim 1, characterized in that: The force limiting block protrudes from the shell.

4. The adjustable force-limited lower limb weight-bearing brace according to claim 1, characterized in that: There are a plurality of compression springs, which are evenly distributed between the base plate and the foot pedal.

5. The adjustable force-limited lower limb weight-bearing brace according to claim 1, characterized in that: The adjustable force limiting device, the side plate, the first side rod and the second side rod are all in two pieces, and are respectively located on the left and right sides of the bottom plate and the foot pedal.

6. The adjustable force-limited lower limb weight-bearing brace according to claim 1, characterized in that: It also includes boots, the base plate is fixedly connected to the bottom of the boots, the foot pedal, compression spring, side plate, first side rod and second side rod are all located inside the boots, the shell is fixedly connected to the side wall of the boots, and the force limiting block entrance and exit are located outside the boots.

7. The adjustable force-limited lower limb weight-bearing brace according to claim 6, characterized in that: It also includes a lower limb wearing ring, which is fixedly connected to the top of the shell.

8. The adjustable force-limited lower limb weight-bearing brace according to claim 7, characterized in that: It also includes a height adjuster, which includes a latch, a first adjusting rod and a second adjusting rod. The first adjusting rod is fixedly connected to the top of the shell, the upper end of the first adjusting rod is provided with a communicating sliding hole and a positioning hole, the second adjusting rod is fixedly connected to the lower limb wearing ring, the lower end of the second adjusting rod is provided with a plurality of height adjustment holes, the second adjusting rod is slidably connected to the first adjusting rod, and the latch passes through the positioning hole and is inserted into one of the height adjustment holes.

9. The adjustable force-limited lower limb weight-bearing brace according to claim 1, characterized in that: The force-limiting block is a wedge-shaped block, and the sliding block can be in frictional contact with the inclined surface of the wedge-shaped block and can also move back and forth above the wedge-shaped block.

10. The adjustable force-limited lower limb weight-bearing brace according to claim 1, characterized in that: The adjustable force limiting device also includes a tension spring, the lower end of which is fixedly connected to the pin shaft, and the upper end of which is fixedly connected to the top of the shell. The force limiting block is a special-shaped block, and the sliding block can frictionally contact the top surface of the special-shaped block and can also circulate around the special-shaped block.

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