Adjustable growing pediatric fracture fixation orthosis
By designing an adjustable, growth-type pediatric fracture fixation brace, the problem of existing fixation methods being unable to adapt to bone growth is solved. The length adjustment component extends synchronously with the child's bone, reducing the frequency of replacement and injury, and ensuring that the fixation effect is synchronized with bone growth.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE THIRD HOSPITAL OF HEBEI MEDICAL UNIV
- Filing Date
- 2025-04-30
- Publication Date
- 2026-07-24
AI Technical Summary
Existing fracture fixation methods cannot adjust to the growth of a child's bones, resulting in plaster casts or braces failing to adapt to changes in bone length during bone growth. This may restrict the normal development of the epiphysis, affect the child's normal growth and development, and increase the risk of secondary injury.
An adjustable growth-type pediatric fracture fixation brace was designed, comprising a length adjustment component and a fixation shell component. The length adjustment component includes an inner adjustment rod and an outer adjustment sleeve, with the outer adjustment sleeve slidably fitted onto the inner adjustment rod. A height adjustment component is located at the lower end of the outer adjustment sleeve for adjusting and locking the height of the outer adjustment sleeve. The fixation shell component includes leg and foot fixation components. As the child's height increases, the length of the length adjustment component is adjusted to extend synchronously.
It reduces the need for frequent brace changes, minimizes harm to children, ensures that the fixation effect automatically adjusts as the bones grow, and avoids complications and sequelae caused by traditional fixation methods.
Smart Images
Figure CN224540394U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical device technology, specifically relating to an adjustable growth-type pediatric fracture fixation brace. Background Technology
[0002] Tibial fractures are the most common fractures of long bones in clinical practice, occurring at any age and accounting for 8% to 15% of all fractures. The tibia has a unique anatomical structure, with less soft tissue coverage on its anteromedial side, making the junction of the middle and lower thirds the most vulnerable area. After high-energy injuries, fractures of the middle and lower segments are most common. Furthermore, the tibia has poor blood supply; its main nutrient vessels enter through the nutrient foramen at the posterolateral junction of the upper and middle thirds of the tibial shaft. When the middle and lower segments of the tibia fracture, complications such as delayed union, nonunion, and soft tissue necrosis are highly likely. During the treatment of tibial fractures, plaster casts, splints, or braces are often used to immobilize and stabilize the bone and promote healing.
[0003] For children with fractures, who are in the process of bone growth, plaster casts are bulky and increase the burden on the patient. Their poor breathability can easily lead to skin problems such as eczema. Plaster casts also have poor X-ray transmittance, making it difficult for doctors to assess the fracture. Furthermore, plaster casts are inconvenient to install and remove, requiring a new cast each time. Small splints, typically straight and non-molding, have poor conformity and adhesion to the limb surface, requiring frequent follow-up visits. The tightness of the splint is difficult to control; too tight a splint can cause circulatory problems, while too loose a splint can cause fracture displacement, leading to malunion. Improper use can even cause serious complications and sequelae. Braces have limitations and cannot fit all children's physical conditions. Traditional plaster casts or braces cannot adapt to changes in bone length during childhood growth and may even restrict normal epiphyseal development. Prolonged pressure can lead to limb shortening or deformities, affecting normal growth and development. Therefore, plaster casts or braces often need to be removed and reapplied, a process that not only causes pain for the child but also increases the risk of secondary injury. Utility Model Content
[0004] The purpose of this invention is to provide an adjustable growth-type pediatric fracture fixation brace, which aims to solve the problem that existing fracture fixation methods cannot be adjusted to follow the growth of the child's bones.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An adjustable growth-type pediatric fracture fixation brace is provided, comprising a length adjustment component and a fixation shell component. The length adjustment component includes an inner adjustment rod and an outer adjustment sleeve. The outer adjustment sleeve is fitted onto the upper end of the inner adjustment rod, and a height adjustment component is provided at the lower end of the outer adjustment sleeve. The height adjustment component is used to adjust the height of the outer adjustment sleeve on the inner adjustment rod. The fixation shell component includes a leg fixation component and a foot fixation component. The foot fixation component is located at the lower end of the inner adjustment rod, and the leg fixation component is located at the upper end of the outer adjustment sleeve.
[0006] In one possible implementation, the upper end of the inner adjusting rod is provided with a thread, the height adjusting member is sleeved on the outside of the inner adjusting rod, the height adjusting member is threadedly connected to the inner adjusting rod, and the height adjusting member is rotatably connected to the lower end of the outer adjusting sleeve.
[0007] In one possible implementation, the inner adjusting rod has a first guide surface on its sidewall, which is arranged along the length of the inner adjusting rod, and the outer adjusting sleeve has a second guide surface on its inner sidewall, which matches the first guide surface.
[0008] In one possible implementation, the height adjustment component includes an outer rotating sleeve and an inner rotating component. The upper end of the outer rotating sleeve is provided with a mounting groove, the inner rotating component is disposed at the bottom of the mounting groove, and the lower end of the outer adjusting sleeve is disposed in the mounting groove and located above the inner rotating component.
[0009] In one possible implementation, a limiting annular groove is provided at the lower end of the outer adjusting sleeve, the limiting annular groove is provided along the circumference of the outer adjusting sleeve, and a limiting rod is provided on the side wall of the outer rotating sleeve, the limiting rod passing through the side wall of the outer rotating sleeve, and the middle part of the limiting rod is located in the limiting annular groove.
[0010] In one possible implementation, the inner rotating component includes an inner rotating ring and an inner rotating sleeve. The inner rotating sleeve is disposed on the upper end face of the inner rotating ring, and the outer diameter of the inner rotating ring is larger than the outer diameter of the inner rotating sleeve. The inner sidewall of the inner rotating sleeve is threadedly matched with the inner adjusting rod.
[0011] In one possible implementation, a rotation limiting block is provided on the inner sidewall of the lower end of the mounting groove. The rotation limiting block is a wedge-shaped block, and the first, second, and third sidewalls of the rotation limiting block are arranged in a triangular pattern. The first sidewall is located on the inner sidewall of the mounting groove. Multiple sets of the rotation limiting blocks are distributed along the circumferential direction of the mounting groove. A rotation limiting groove is formed between the second sidewall of one set of rotation limiting blocks and the third sidewall of an adjacent set of rotation limiting blocks. A rotation shaft is provided at the upper end of the inner rotating ring, and a ratchet is sleeved on the rotation shaft. A limiting spring is provided between the ratchet and the outer sidewall of the inner rotating ring. The limiting spring pushes the end of the ratchet away from the rotation shaft into the rotation limiting groove.
[0012] In one possible implementation, the leg fixation member includes a first mounting part and a leg guard part. The first mounting part is disposed on the rear side of the leg guard part and is sleeved on the upper end of the outer adjustment sleeve. The leg guard part is sleeved on the outer side of the upper end of the patient's lower leg.
[0013] In one possible implementation, the foot fixing component includes a fixed base plate, a fixed post, and a foot protector. The fixed post is located at the rear end of the upper surface of the fixed base plate, the lower end of the inner adjusting rod is located at the upper end of the fixed post, and the foot protector is located at the front end of the upper surface of the fixed base plate.
[0014] In one possible implementation, the leg fixation component is provided with a first pressure sensor for monitoring leg pressure, and the foot fixation component is provided with a second pressure sensor for monitoring foot pressure.
[0015] The beneficial effects of the adjustable growth-type pediatric fracture fixation brace provided by this utility model are as follows:
[0016] Compared with existing technologies, this device includes a length adjustment component and a fixed outer shell component. The length adjustment component comprises an inner adjustment rod and an outer adjustment sleeve. The outer adjustment sleeve is slidably fitted onto the upper end of the inner adjustment rod and has a degree of freedom of sliding along the length of the inner adjustment rod. A height adjustment component is located at the lower end of the outer adjustment sleeve and is fitted onto the outside of the inner adjustment rod. The height adjustment component adjusts the height of the outer adjustment sleeve and locks it in place. The fixed outer shell component includes a leg fixation component and a foot fixation component. The leg fixation component is used to fix the upper end of the child's lower leg, and the foot fixation component is used to fix the outside of the child's foot. The child's fracture site is located between the leg fixation component and the foot fixation component. As the child grows taller, the length of the length adjustment component is adjusted according to the child's growth. The length adjustment component extends synchronously with bone growth, eliminating the need for frequent brace replacements and reducing harm to the child. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 A three-dimensional structural diagram of the adjustable growth-type pediatric fracture fixation brace provided in an embodiment of this utility model;
[0019] Figure 2 This is a three-dimensional structural diagram of the length adjustment component used in an embodiment of the present utility model;
[0020] Figure 3 This is an exploded view of the length adjustment component used in the embodiment of this utility model;
[0021] Figure 4 This is an exploded structural diagram of the height adjustment component used in the embodiment of this utility model;
[0022] Figure 5 This is a schematic diagram of the structure of the first pressure sensor used in an embodiment of this utility model.
[0023] In the diagram: 1. Inner adjusting rod; 2. Outer adjusting sleeve; 3. Height adjusting component; 4. First mounting part; 5. Leg guard; 6. First pressure sensor; 7. Fixed base plate; 8. Fixed column; 9. Foot guard; 10. First guide surface; 11. Second guide surface; 12. Outer rotating sleeve; 13. Limiting ring groove; 14. Limiting rod; 15. Inner rotating ring; 16. Inner rotating sleeve; 17. Rotation limiting block; 18. Second side wall; 19. Third side wall; 20. Rotating shaft; 21. Limiting spring; 22. Rotating part; 23. Clip-on part; 24. Second pressure sensor; 25. First ventilated outer shell; 26. First elastic buffer pad; 27. Second ventilated outer shell; 28. Second elastic buffer pad. Detailed Implementation
[0024] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0025] Please refer to Figures 1 to 5The present invention provides a specific embodiment of an adjustable growth-type pediatric fracture fixation brace, which includes a length adjustment component and a fixation shell component. The length adjustment component includes an inner adjustment rod 1 and an outer adjustment sleeve 2. The outer adjustment sleeve 2 is fitted onto the upper end of the inner adjustment rod 1, and a height adjustment component 3 is provided at the lower end of the outer adjustment sleeve 2. The height adjustment component 3 is used to adjust the height of the outer adjustment sleeve 2 on the inner adjustment rod 1. The fixation shell component includes a leg fixation component and a foot fixation component. The foot fixation component is located at the lower end of the inner adjustment rod 1, and the leg fixation component is located at the upper end of the outer adjustment sleeve 2.
[0026] This utility model provides an adjustable growth-type pediatric fracture fixation brace. Compared with the prior art, it is equipped with a length adjustment component and a fixing shell component. The length adjustment component includes an inner adjustment rod 1 and an outer adjustment sleeve 2. The outer adjustment sleeve 2 is slidably fitted on the upper end of the inner adjustment rod 1 and has a sliding degree of freedom in the length direction of the inner adjustment rod 1. The height adjustment component 3 is located at the lower end of the outer adjustment sleeve 2 and is fitted on the outside of the inner adjustment rod 1. The height adjustment component 3 realizes the adjustment of the height of the outer adjustment sleeve 2 and is used to lock the height of the outer adjustment sleeve 2. The fixing shell component includes a leg fixation component and a foot fixation component. The leg fixation component is used to fix the upper end of the child's lower leg, and the foot fixation component is used to fix the outside of the child's foot. The fracture site of the child is located between the leg fixation component and the foot fixation component. As the child's height increases, the length of the length adjustment component is adjusted according to the child's growth. The length adjustment component extends synchronously with bone growth, eliminating the need for frequent brace replacement and reducing harm to the child.
[0027] For details, please refer to Figures 1 to 5 The device includes a length adjustment component and a fixed outer shell component. The length adjustment component is vertically positioned and located behind the fixed outer shell component. The length adjustment component includes an inner adjustment rod 1 and an outer adjustment sleeve 2. The upper end of the inner adjustment rod 1 passes through the outer adjustment sleeve 2. A height adjustment component 3 is located at the lower end of the outer adjustment sleeve 2 and is fitted onto the outside of the inner adjustment rod 1. When the height adjustment component 3 is locked, it locks the position of the outer adjustment sleeve 2. When the height adjustment component 3 is unlocked, the height of the outer adjustment sleeve 2 can be adjusted. The fixed outer shell component includes a leg fixation component and a foot fixation component. The leg fixation component is located at the front of the upper end of the outer adjustment sleeve 2, and the foot fixation component is located at the front of the lower end of the inner adjustment rod 1. The height of the leg fixation component changes synchronously with the outer adjustment sleeve 2, adjusting the length of the length adjustment component according to the child's height.
[0028] Furthermore, the length adjustment component can be made of medical-grade shape memory polymer (SMP), which has good biocompatibility and shape memory function.
[0029] As a specific embodiment of the adjustable growth-type pediatric fracture fixation brace provided by this utility model, please refer to Figures 1 to 4 The upper end of the inner adjusting rod 1 is provided with a thread, the height adjusting component 3 is sleeved on the outside of the inner adjusting rod 1, the height adjusting component 3 is threadedly connected to the inner adjusting rod 1, and the height adjusting component 3 is rotatably connected to the lower end of the outer adjusting sleeve 2.
[0030] For details, please refer to Figures 1 to 4 The upper end of the inner adjusting rod 1 is provided with a thread, which is distributed along the length of the inner adjusting rod 1. The height adjusting component 3 is sleeved on the outside of the inner adjusting rod 1. The lower end of the inner side wall of the height adjusting component 3 is provided with a thread structure. The thread of the inner side wall of the height adjusting component 3 matches the thread of the outer side wall of the inner adjusting rod 1. The lower end of the outer adjusting sleeve 2 passes through the upper end of the height adjusting component 3 and is rotatably connected to the upper end of the height adjusting component 3. When the height adjusting component 3 is rotated, the height adjusting component 3 rises at the position of the inner adjusting rod 1, which drives the outer adjusting sleeve 2 to rise, thereby raising the height of the leg fixing component.
[0031] As a specific embodiment of the adjustable growth-type pediatric fracture fixation brace provided by this utility model, please refer to Figures 1 to 3 The inner adjusting rod 1 has a first guide surface 10 on its side wall, which is arranged along the length of the inner adjusting rod 1. The outer adjusting sleeve 2 has a second guide surface 11 on its inner side wall, which matches the first guide surface 10.
[0032] For details, please refer to Figures 1 to 3 The first guide surface 10 is disposed on the outer side wall of the inner adjusting rod 1 and is vertically disposed on the rear side wall of the inner adjusting rod 1. The second guide surface 11 is disposed on the inner side wall of the outer adjusting sleeve 2 and is vertically disposed on the inner side wall of the outer adjusting sleeve 2. The second guide surface 11 matches the first guide surface 10. The first guide surface 10 and the second guide surface 11 cooperate to prevent the outer adjusting sleeve 2 from rotating relative to the inner adjusting rod 1. The outer adjusting sleeve 2 only has the degree of freedom of movement in the height direction.
[0033] As a specific embodiment of the adjustable growth-type pediatric fracture fixation brace provided by this utility model, please refer to Figures 1 to 4 The height adjustment component 3 includes an outer rotating sleeve 12 and an inner rotating component. The upper end of the outer rotating sleeve 12 is provided with a mounting groove, the inner rotating component is provided at the bottom of the mounting groove, and the lower end of the outer adjusting sleeve 2 is provided in the mounting groove and located above the inner rotating component.
[0034] For details, please refer to Figures 1 to 4The height adjustment component 3 includes an outer rotating sleeve 12 and an inner rotating component. The inner rotating component is rotatably disposed in the mounting groove at the upper end of the outer rotating sleeve 12 and is disposed at the bottom of the mounting groove. The inner sidewall of the inner rotating component is provided with a threaded structure that matches the inner adjusting rod 1. The lower end of the outer adjusting sleeve 2 is inserted into the mounting groove and is located above the inner rotating component. The outer adjusting sleeve 2 is rotatably connected to the mounting groove, and the inner rotating component does not affect the rotation of the outer adjusting sleeve 2.
[0035] As a specific embodiment of the adjustable growth-type pediatric fracture fixation brace provided by this utility model, please refer to Figures 1 to 4 The lower end of the outer adjusting sleeve 2 is provided with a limiting ring groove 13, which is arranged along the circumference of the outer adjusting sleeve 2. The side wall of the outer rotating sleeve 12 is provided with a limiting rod 14, which passes through the side wall of the outer rotating sleeve 12, and the middle part of the limiting rod 14 is located in the limiting ring groove 13.
[0036] For details, please refer to Figures 1 to 4 A limiting ring groove 13 is provided at the lower end of the outer adjusting sleeve 2. The limiting ring groove 13 is a circular groove located around the circumference of the outer adjusting sleeve 2. The plane containing the limiting ring groove 13 is perpendicular to the length direction of the outer adjusting sleeve 2. A limiting hole is provided on the side wall of the outer rotating sleeve 12. The limiting hole is suitable for the insertion of the limiting rod 14. The limiting rod 14 enters the outer rotating sleeve 12 through the limiting hole on one side and exits through the limiting hole on the other side of the outer rotating sleeve 12. The limiting rod 14 is located at... The outer adjusting sleeve 2 is located on the side, and the middle part of the limiting rod 14 is located between the upper and lower end faces of the limiting ring groove 13. The middle part of the limiting rod 14 abuts against the bottom of the limiting ring groove 13. There are two sets of limiting rods 14, which are arranged opposite to each other. The two sets of limiting rods 14 limit the outer adjusting sleeve 2 between the two sets of limiting rods 14, so as to realize the relative rotation of the outer adjusting sleeve 2 and the outer rotating sleeve 12. Rotating the outer rotating sleeve 12 can keep the outer adjusting sleeve 2 from rotating.
[0037] As a specific embodiment of the adjustable growth-type pediatric fracture fixation brace provided by this utility model, please refer to Figures 1 to 4 The inner rotating component includes an inner rotating ring 15 and an inner rotating sleeve 16. The inner rotating sleeve 16 is disposed on the upper end face of the inner rotating ring 15, and the outer diameter of the inner rotating ring 15 is larger than the outer diameter of the inner rotating sleeve 16. The inner sidewall of the inner rotating sleeve 16 is threadedly matched with the inner adjusting rod 1.
[0038] For details, please refer to Figures 1 to 4The inner rotating component includes an inner rotating ring 15 and an inner rotating sleeve 16. The inner rotating sleeve 16 is located at the center of the upper end face of the inner rotating ring 15 and is perpendicular to the inner rotating ring 15. The inner adjusting rod 1 passes through the inner rotating ring 15 and the inner rotating sleeve 16. The inner side wall of the inner rotating sleeve 16 is provided with a thread that matches the thread of the outer side wall of the inner adjusting rod 1. The rotation of the outer rotating sleeve 12 drives the inner rotating sleeve 16 to rotate, thereby changing the height of the height adjusting component 3.
[0039] As a specific embodiment of the adjustable growth-type pediatric fracture fixation brace provided by this utility model, please refer to Figures 1 to 4 A rotation limiting block 17 is provided on the inner sidewall of the lower end of the mounting groove. The rotation limiting block 17 is a wedge-shaped block. The first sidewall, the second sidewall 18, and the third sidewall 19 of the rotation limiting block 17 are arranged in a triangle. The first sidewall is set on the inner sidewall of the mounting groove. Multiple sets of rotation limiting blocks 17 are distributed along the circumference of the mounting groove. A rotation limiting groove is formed between the second sidewall 18 of one set of rotation limiting blocks 17 and the third sidewall 19 of the adjacent set of rotation limiting blocks 17. A rotation shaft 20 is provided on the upper end of the inner rotating ring 15. A ratchet is sleeved on the rotation shaft 20. A limiting spring 21 is provided between the ratchet and the outer sidewall of the inner rotating sleeve 16. The limiting spring 21 pushes the ratchet away from the rotation shaft 20 into the rotation limiting groove.
[0040] For details, please refer to Figures 1 to 4A rotation limiting block 17 is disposed on the inner sidewall of the lower end of the mounting groove. The rotation limiting block 17 is vertically positioned and is a wedge-shaped block. The upper end face of the rotation limiting block 17 is parallel to the lower end face. The first sidewall, second sidewall 18, and third sidewall 19 of the rotation limiting block 17 are arranged in a triangle and are disposed between the upper end face and the lower end face of the rotation limiting block 17. The first sidewall of the rotation limiting block 17 is disposed on the inner sidewall of the mounting groove. The length of the second sidewall 18 of the rotation limiting block 17 is greater than the length of the third sidewall 19 of the rotation limiting block 17. Multiple sets of rotation limiting blocks 17 are evenly distributed along the circumference of the mounting groove. A rotation limiting groove is formed between the second sidewall 18 of one set of rotation limiting blocks 17 and the third sidewall 19 of the adjacent set of rotation limiting blocks 17. The mounting groove has a serrated inner wall at its lower end. The rotating shaft 20 is vertically mounted on the upper surface of the inner rotating ring 15. The rotating shaft 20 is located outside the inner rotating sleeve 16. A ratchet is mounted on the outside of the rotating shaft 20. The ratchet includes a rotating part 22 and a locking part 23. The rotating part 22 is mounted on the outside of the rotating shaft 20, and the locking part 23 is mounted on the side wall of the rotating part 22. The locking part 23 extends toward the rotation limiting groove. The limiting spring 21 is a coil spring. The limiting spring 21 is mounted on the rotating shaft 20. The first end of the limiting spring 21 abuts against the locking part 23, and the second end of the limiting spring 21 abuts against the outside of the inner rotating sleeve 16. The limiting spring 21 pushes the ratchet away from the inner rotating sleeve 16 and pushes the free end of the locking part 23 into the rotation limiting groove. Under the action of the ratchet and the limiting spring 21, the outer adjusting sleeve 2 is prevented from slipping during use.
[0041] As a specific embodiment of the adjustable growth-type pediatric fracture fixation brace provided by this utility model, please refer to Figure 1 as well as Figure 5 The leg fixation device includes a first mounting part 4 and a leg guard part 5. The first mounting part 4 is located on the rear side of the leg guard part 5 and is sleeved on the upper end of the outer adjustment sleeve 2. The leg guard part 5 is sleeved on the outer side of the upper end of the patient's lower leg.
[0042] For details, please refer to Figure 1 as well as Figure 5The leg support includes a first mounting part 4 and a leg guard 5. The upper end of the outer adjusting sleeve 2 passes through the first mounting part 4. The leg guard 5 is located in front of the first mounting part 4 and wraps around the outer side of the upper end of the patient's lower leg. The leg guard 5 is used to fix the patient's lower leg. The leg guard 5 can be a two-part wrap-around structure, with the left and right halves of the leg guard 5 opening to the sides. The left and right halves of the leg guard 5 wrap around the outer side of the patient's leg, respectively. The left and right halves of the leg guard 5 can be connected by straps, buckles, or magnetic clasps. The leg protector 5 is fixed together by means of various methods. It includes a first breathable outer shell 25 and a first elastic cushioning pad 26. The first elastic cushioning pad 26 is located on the inner side wall of the first breathable outer shell 25. The first elastic cushioning pad 26 is made of antibacterial silicone material, which can effectively inhibit bacterial growth. The thickness of the first elastic cushioning pad 26 is between 3 and 5 mm. It has good elasticity and cushioning performance, effectively dispersing the pressure on the leg and protecting the epiphysis. The first breathable outer shell 25 is made of 3D knitted mesh fabric, which has excellent breathability and can ensure normal skin respiration.
[0043] As a specific embodiment of the adjustable growth-type pediatric fracture fixation brace provided by this utility model, please refer to Figure 1 as well as Figure 5 The foot fixing component includes a fixed base plate 7, a fixed post 8, and a foot protector 9. The fixed post 8 is located at the rear end of the upper surface of the fixed base plate 7, the lower end of the inner adjusting rod 1 is located at the upper end of the fixed post 8, and the foot protector 9 is located at the front end of the upper surface of the fixed base plate 7.
[0044] For details, please refer to Figure 1 as well as Figure 5 The foot fixing component includes a fixed base plate 7, a fixing post 8, and a foot protector 9. The fixing post 8 and the foot protector 9 are located on the upper surface of the fixed base plate 7. The fixing post 8 is located on the rear side of the foot protector 9. The lower end of the inner adjusting rod 1 is fixed to the fixing post 8. The foot protector 9 is suitable for the patient's foot to be inserted and fixed. The foot protector 9 can be a two-part wrap-around structure, with the left and right halves of the foot protector 9 opening to the sides. The left and right halves of the foot protector 9 respectively wrap around the outside of the patient's foot. The left and right halves of the foot protector 9 can be connected by a tie. The foot protector 9 is secured together by means of straps, buckles, magnetic clasps, etc. It includes a second breathable outer shell 27 and a second elastic cushioning pad 28. The second elastic cushioning pad 28 is located on the inner wall of the second breathable outer shell 27. The second elastic cushioning pad 28 is made of antibacterial silicone material, which can effectively inhibit bacterial growth. The thickness of the second elastic cushioning pad 28 is between 3 and 5 mm, which has good elasticity and cushioning performance, effectively dispersing the pressure on the foot and protecting the epiphysis. The second breathable outer shell 27 is made of 3D knitted mesh fabric, which has excellent breathability and can ensure normal skin respiration.
[0045] As a specific embodiment of the adjustable growth-type pediatric fracture fixation brace provided by this utility model, please refer to Figure 1 as well as Figure 5 The leg fixation component is equipped with a first pressure sensor 6 for monitoring leg pressure, and the foot fixation component is equipped with a second pressure sensor 24 for monitoring foot pressure.
[0046] For details, please refer to Figure 1 as well as Figure 5 The first pressure sensor 6 is located on the side of the first elastic buffer pad 26 away from the patient's leg. The first pressure sensor 6 is located at the proximal epiphysis of the patient, which is prone to pressure. The pressure at the proximal epiphysis of the patient is transmitted to the first pressure sensor 6 through the first elastic buffer pad 26. The first pressure sensor 6 is connected to a Bluetooth monitoring module. The second pressure sensor 24 is located on the side of the second elastic buffer pad 28 away from the patient's foot. The second pressure sensor 24 is located at the distal epiphysis of the patient, which is prone to pressure. The pressure at the distal epiphysis of the patient is transmitted to the second pressure sensor 24 through the second elastic buffer pad 28. The second pressure sensor 24 is connected to a Bluetooth monitoring module, which is set on a mobile phone. The first pressure sensor 6 and the second pressure sensor 24 monitor local pressure in real time. The pressure threshold of the first pressure sensor 6 and the second pressure sensor 24 is set to 20 kPa. Once the pressure exceeds the threshold, an early warning is issued immediately.
[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An adjustable, growth-type pediatric fracture fixation brace, characterized in that, The device includes a length adjustment assembly and a fixed outer shell assembly. The length adjustment assembly includes an inner adjustment rod and an outer adjustment sleeve. The outer adjustment sleeve is fitted onto the upper end of the inner adjustment rod, and a height adjustment component is provided at the lower end of the outer adjustment sleeve. The height adjustment component is used to adjust the height of the outer adjustment sleeve on the inner adjustment rod. The fixed outer shell assembly includes a leg fixing component and a foot fixing component. The foot fixing component is located at the lower end of the inner adjustment rod, and the leg fixing component is located at the upper end of the outer adjustment sleeve.
2. The adjustable growth-type pediatric fracture fixation brace as described in claim 1, characterized in that, The upper end of the inner adjusting rod is provided with a thread, the height adjusting component is sleeved on the outside of the inner adjusting rod, the height adjusting component is threadedly connected to the inner adjusting rod, and the height adjusting component is rotatably connected to the lower end of the outer adjusting sleeve.
3. The adjustable growth-type pediatric fracture fixation brace as described in claim 2, characterized in that, The inner adjusting rod has a first guide surface on its side wall, which is arranged along the length of the inner adjusting rod. The outer adjusting sleeve has a second guide surface on its inner side wall, which matches the first guide surface.
4. An adjustable growth-type pediatric fracture fixation brace as described in claim 2, characterized in that, The height adjustment component includes an outer rotating sleeve and an inner rotating component. The upper end of the outer rotating sleeve is provided with a mounting groove, the inner rotating component is disposed at the bottom of the mounting groove, and the lower end of the outer adjusting sleeve is disposed in the mounting groove and located above the inner rotating component.
5. An adjustable growth-type pediatric fracture fixation brace as described in claim 4, characterized in that, The lower end of the outer adjusting sleeve is provided with a limiting ring groove, which is arranged along the circumference of the outer adjusting sleeve. The side wall of the outer rotating sleeve is provided with a limiting rod, which passes through the side wall of the outer rotating sleeve, and the middle part of the limiting rod is located in the limiting ring groove.
6. An adjustable growth-type pediatric fracture fixation brace as described in claim 5, characterized in that, The inner rotating component includes an inner rotating ring and an inner rotating sleeve. The inner rotating sleeve is disposed on the upper end face of the inner rotating ring, and the outer diameter of the inner rotating ring is larger than the outer diameter of the inner rotating sleeve. The inner sidewall of the inner rotating sleeve is threadedly matched with the inner adjusting rod.
7. An adjustable growth-type pediatric fracture fixation brace as described in claim 6, characterized in that, A rotation limiting block is provided on the inner sidewall of the lower end of the mounting groove. The rotation limiting block is a wedge-shaped block. The first sidewall, second sidewall, and third sidewall of the rotation limiting block are arranged in a triangle. The first sidewall is located on the inner sidewall of the mounting groove. Multiple sets of the rotation limiting blocks are distributed along the circumference of the mounting groove. A rotation limiting groove is formed between the second sidewall of one set of rotation limiting blocks and the third sidewall of an adjacent set of rotation limiting blocks. A rotation shaft is provided at the upper end of the inner rotating ring. A ratchet is sleeved on the rotation shaft. A limiting spring is provided between the ratchet and the outer sidewall of the inner rotating ring. The limiting spring pushes the end of the ratchet away from the rotation shaft into the rotation limiting groove.
8. An adjustable growth-type pediatric fracture fixation brace as described in claim 1, characterized in that, The leg fixation device includes a first mounting part and a leg guard part. The first mounting part is located on the rear side of the leg guard part and is sleeved on the upper end of the outer adjustment sleeve. The leg guard part is sleeved on the outer side of the upper end of the patient's lower leg.
9. An adjustable growth-type pediatric fracture fixation brace as described in claim 1, characterized in that, The foot fixing component includes a fixed base plate, a fixed post, and a foot protector. The fixed post is located at the rear end of the upper surface of the fixed base plate, the lower end of the inner adjusting rod is located at the upper end of the fixed post, and the foot protector is located at the front end of the upper surface of the fixed base plate.
10. An adjustable growth-type pediatric fracture fixation brace as described in claim 1, characterized in that, The leg fixation component is equipped with a first pressure sensor for monitoring leg pressure, and the foot fixation component is equipped with a second pressure sensor for monitoring foot pressure.