Carbon fiber ankle joint rehabilitation protector
By using carbon fiber ankle rehabilitation braces, the problems of uneven pressure distribution, insufficient joint range of motion control, and insufficient rigid support in orthopedic walking boots have been solved. This has enabled lightweight and convenient ankle fixation and joint range of motion control that meets anatomical requirements, while reducing the side effects of traditional braces.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 柴方红
- Filing Date
- 2025-03-17
- Publication Date
- 2026-07-03
AI Technical Summary
Existing orthopedic walking boots, such as CAM boots and air-cushioned boots, have design flaws in terms of uneven pressure distribution, insufficient joint range of motion control, and insufficient rigid support, leading to problems such as knee and hip pain, skin necrosis, nerve compression, and secondary injuries for users.
The foot protector, ankle cylindrical protrusion, ankle cylindrical cover, and leg protector, all made of carbon fiber, are connected by a rotating pin. Combined with a fixing strap, upper and lower screws, and a groove design, they achieve lightweight and convenient ankle joint fixation and fine-tuning functions.
It provides lightweight and convenient ankle fixation, reduces imbalance, is suitable for athletic shoes, avoids pressure sores, nerve compression and secondary injury caused by traditional braces, and meets the anatomical requirements for joint range of motion control.
Smart Images

Figure CN224441545U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of protective gear technology, specifically to a carbon fiber ankle joint rehabilitation protective gear. Background Technology
[0002] For a long time, orthopedic walking boots (such as CAM boots and air-cushioned boots) have had advantages over plaster casts. However, studies have shown that many users experience defects such as knee, hip, and back pain due to limb imbalance. Some customers experience persistent discomfort after use, leading to an increasing number of class-action lawsuits.
[0003] Orthopedic walking boots (such as CAM boots and air-cushioned boots) serve as immobilization and rehabilitation tools for patients with fractures, Achilles tendon injuries, and other conditions. Design flaws in these boots are often the core point of contention in legal disputes. Legal battles involving them are common abroad. The following analysis details common design flaws and the risks they pose from technical, ergonomic, and clinical suitability perspectives:
[0004] 1. Uneven pressure distribution
[0005] Problem: The pressure regulation system of the airbag boot or fixation strap is poorly designed, resulting in excessively high local pressure.
[0006] Consequences: pressure sores or skin necrosis (especially in diabetic or elderly patients); nerve compression (such as peroneal nerve injury leading to foot drop).
[0007] Case: A class-action lawsuit in the United States concerning foot ulcers caused by uneven airbag pressure in DJO Global airbag boots.
[0008] 2. Insufficient joint range of motion control
[0009] Problem: The locking mechanism or angle adjustment range of the hinge does not meet anatomical requirements.
[0010] Consequences: Overly restricting ankle joint movement can lead to stiffness; exceeding the safe range of motion can cause secondary injuries (such as a second Achilles tendon tear).
[0011] Case: A Canadian doctor was prosecuted for failing to properly adjust the hinge angle of a CAM boot.
[0012] 3. Insufficient rigid support
[0013] Problem: Insufficient rigidity of the boot material or weak structural design, making it unable to effectively fix the fracture site.
[0014] Consequences: Fracture displacement or delayed healing; need for secondary surgery (such as the lawsuit concerning fracture displacement caused by insufficient rigidity of the German Ottobock boot). Utility Model Content
[0015] Therefore, this utility model provides a carbon fiber ankle joint rehabilitation brace to solve the above-mentioned problems in the prior art.
[0016] To achieve the above objectives, this utility model provides the following technical solution:
[0017] According to a first aspect of this utility model, a carbon fiber ankle joint rehabilitation brace includes a foot protector, an ankle joint cylindrical protrusion, an ankle joint cylindrical cover, a leg protector, and a rotating pin. The foot protector has a U-shaped curved surface and is used to cover the heel and the inner and outer sides of the foot. The ankle joint cylindrical protrusion is provided at the upper apex of the inner and outer sides of the foot, directly opposite the ankle joint. The lower end of the leg protector is provided with an ankle joint cylindrical cover, which is fitted around the outer periphery of the ankle joint cylindrical protrusion and rotates around it. A rotating pin is provided at the center of the ankle joint cylindrical cover for rotatably connecting with the ankle joint cylindrical protrusion. The foot protector, ankle joint cylindrical protrusion, ankle joint cylindrical cover, and leg protector are all made of carbon fiber.
[0018] Furthermore, it also includes a fixing strap, the two ends of which are fixedly connected to the inner and outer sides of the foot guard plate, and the middle of the fixing strap is located directly below the foot plate.
[0019] Furthermore, it also includes an upper screw, which is detachably positioned above the rotating pin to lock relative rotation between the ankle joint cylindrical protrusion and the ankle joint cylindrical cap.
[0020] Furthermore, it also includes a lower screw, which is detachably located below the rotating pin and is used to lock the relative rotation between the ankle joint cylindrical protrusion and the ankle joint cylindrical cover within a preset angle.
[0021] Furthermore, it also includes an upper pin. The outer circular end face of the ankle joint cylindrical protrusion is horizontally provided with an upper strip groove above the rotating pin mounting location. The corresponding outer circumferential surface of the ankle joint cylindrical cover has two upper locking holes. The two ends of the upper pin pass through the two upper locking holes and the middle part is embedded in the upper strip groove. The center position of the upper pin is installed on the ankle joint cylindrical cover by an upper screw. The width of the upper pin is equal to the width of the upper strip groove.
[0022] Furthermore, it also includes a lower strip pin. The outer circular end face of the ankle joint cylindrical protrusion is horizontally provided with a lower strip groove below the rotating pin mounting location. The corresponding outer circumferential surface of the ankle joint cylindrical cover has two lower locking holes. The two ends of the lower strip pin pass through the two lower locking holes and the middle part is embedded in the lower strip groove. The center position of the lower strip pin is installed on the ankle joint cylindrical cover by a lower screw. The width of the lower strip pin is smaller than the width of the lower strip groove so that the lower strip pin can swing around the lower screw in the lower strip groove.
[0023] Furthermore, the width of the lower groove gradually expands from the center to both ends along its length.
[0024] Furthermore, the foot guard and the cylindrical protrusion of the ankle joint are integrally molded structures made of carbon fiber.
[0025] Furthermore, the ankle joint cylindrical cover and the leg guard are integrally molded structures made of carbon fiber.
[0026] Furthermore, the ankle joint cylindrical cover and the leg guard have a uniform thickness throughout.
[0027] This invention has the following advantages: the carbon fiber ankle brace is lightweight, wearable, and convenient. It can be used with your own footwear, provides stable support and reduces imbalance, and can be used to replace CAM walking boots for ankle injury recovery; it is suitable for most sports shoes. Attached Figure Description
[0028] Figure 1 This is a three-dimensional structural diagram of a carbon fiber ankle joint rehabilitation brace provided for some embodiments of the present invention.
[0029] Figure 2 An exploded view of a carbon fiber ankle rehabilitation brace provided for some embodiments of this utility model.
[0030] Figure 3 This is a schematic diagram illustrating the state of a carbon fiber ankle joint rehabilitation brace provided for some embodiments of the present invention.
[0031] Figure 4 This is an unfolded structural diagram of a carbon fiber ankle joint rehabilitation brace provided for some embodiments of the present invention.
[0032] Figure 5 An exploded view of a carbon fiber ankle rehabilitation brace provided for some embodiments of this utility model.
[0033] Figure 6 The rear view of a carbon fiber ankle rehabilitation brace provided for some embodiments of this utility model.
[0034] Figure 7 The image shows a bottom view of a carbon fiber ankle rehabilitation brace provided for some embodiments of this utility model.
[0035] In the diagram: 1. Foot guard plate, 2. Ankle joint cylindrical protrusion, 3. Ankle joint cylindrical cover, 4. Leg guard plate, 5. Rotating pin, 6. Fixing strap, 7. Upper screw, 8. Lower screw, 9. Upper slot, 10. Lower slot, 11. Upper pin, 12. Lower pin, 13. Upper locking hole, 14. Lower locking hole. Detailed Implementation
[0036] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0037] Example 1
[0038] like Figures 1 to 7 As shown, a carbon fiber ankle joint rehabilitation brace according to the first aspect of this utility model includes a foot protector 1, an ankle joint cylindrical protrusion 2, an ankle joint cylindrical cover 3, a leg protector 4, and a rotating pin 5. The foot protector 1 has a U-shaped curved surface and is used to cover the heel and the inner and outer sides of the foot. The ankle joint cylindrical protrusion 2 is provided at the upper apex of the inner and outer sides of the foot, directly opposite the ankle joint position. The lower end of the leg protector 4 is provided with the ankle joint cylindrical cover 3. The ankle joint cylindrical cover 3 is fitted around the outer periphery of the ankle joint cylindrical protrusion 2 and rotates around it. The rotating pin 5 is passed through the center of the ankle joint cylindrical cover 3 for rotatably connecting with the ankle joint cylindrical protrusion 2. The foot protector 1, the ankle joint cylindrical protrusion 2, the ankle joint cylindrical cover 3, and the leg protector 4 are all made of carbon fiber.
[0039] In the above embodiments, it should be noted that, as Figure 3 As shown, when in use, the foot guard 1 is fitted onto the shoe from the heel. At this time, the connection between the ankle joint cylindrical protrusion 2 and the ankle joint cylindrical cover 3 is located at the ankle joint, which realizes the relative rotation of the leg guard 4 relative to the foot guard 1.
[0040] The technical effects achieved by the above embodiments are as follows: carbon fiber ankle braces are lightweight, wearable, and convenient. They can be used with one's own footwear, provide stable support and reduce imbalance, and can be used to replace CAM walking boots for ankle injury recovery; they are suitable for most sports shoes.
[0041] Example 2
[0042] like Figures 1 to 7 As shown, a carbon fiber ankle joint rehabilitation brace includes all the contents of Embodiment 1, and in addition, it includes a fixing strap 6. The two ends of the fixing strap 6 are fixedly connected to the inner and outer sides of the foot of the foot guard plate 1, and the middle part of the fixing strap 6 is located directly below the foot plate.
[0043] The technical effect achieved by the above embodiments is that by setting the fixing strap 6, the foot protector 1 is prevented from falling off the shoe.
[0044] Example 3
[0045] like Figures 1 to 7 As shown, a carbon fiber ankle joint rehabilitation brace includes all the contents of Embodiment 2, except for an upper screw 7, which is detachably disposed above the rotating pin 5 and is used to lock the relative rotation between the ankle joint cylindrical protrusion 2 and the ankle joint cylindrical cover 3.
[0046] Optionally, a lower screw 8 is also included. The lower screw 8 is detachably disposed below the rotating pin 5 and is used to lock the relative rotation between the ankle joint cylindrical protrusion 2 and the ankle joint cylindrical cover 3 within a preset angle.
[0047] Optionally, it also includes an upper pin 11. The outer end face of the ankle joint cylindrical protrusion 2 is horizontally provided with an upper strip groove 9 above the mounting location of the rotating pin 5. The corresponding outer circumferential surface of the ankle joint cylindrical cover 3 is provided with two upper locking holes 13. The two ends of the upper pin 11 pass through the two upper locking holes 13 and the middle part is embedded in the upper strip groove 9. The center position of the upper pin 11 is installed on the ankle joint cylindrical cover 3 by an upper screw 7. The width of the upper pin 11 is equal to the width of the upper strip groove 9.
[0048] Optionally, it also includes a lower strip pin 12. The outer end face of the ankle joint cylindrical protrusion 2 is provided with a lower strip groove 10 below the mounting location of the rotating pin 5. The corresponding outer circumferential surface of the ankle joint cylindrical cover 3 is provided with two lower locking holes 14. The two ends of the lower strip pin 12 pass through the two lower locking holes 14 and the middle part is embedded in the lower strip groove 10. The center position of the lower strip pin 12 is installed on the ankle joint cylindrical cover 3 by a lower screw 8. The width of the lower strip pin 12 is smaller than the width of the lower strip groove 10.
[0049] Optionally, the width of the lower groove 10 gradually expands from the center to both ends in its length direction.
[0050] The technical effect achieved by the above embodiment is as follows: When in use, when only the upper screw 7 and the upper strip pin 11 are set, the leg guard 4 cannot rotate relative to the foot guard 1 and is locked in the vertical position; when the upper screw 7 and the upper strip pin 11 are removed, and only the lower screw 8 and the lower strip pin 12 are set, the leg guard 4 can rotate relative to the foot guard 1 within a small angle, which meets the need for fine adjustment of the position of the leg guard 4 relative to the foot guard 1.
[0051] Example 4
[0052] like Figures 1 to 7 As shown, a carbon fiber ankle joint rehabilitation brace includes all the contents of Example 3. In addition, the foot guard plate 1 and the ankle joint cylindrical protrusion 2 are integrally molded structures made of carbon fiber.
[0053] The technical effect achieved by the above embodiments is that the connection strength between the foot guard plate 1 and the ankle joint cylindrical protrusion 2 is enhanced by the integrally molded structure.
[0054] Example 5
[0055] like Figures 1 to 7 As shown, a carbon fiber ankle joint rehabilitation brace includes all the contents of Example 4. In addition, the ankle joint cylindrical cover 3 and the leg guard plate 4 are integrally molded structures made of carbon fiber.
[0056] Optionally, the ankle joint cylindrical cover 3 and the leg guard plate 4 have a uniform thickness throughout.
[0057] The technical effect achieved by the above embodiments is that the connection strength between the ankle joint cylindrical cover 3 and the leg guard plate 4 is enhanced by the integrally molded structure.
[0058] The carbon fiber ankle rehabilitation brace of the above embodiment can weigh only 200g, which is about 80% lighter than the 800-1200g weight of traditional walking boots (CAM / airbag boots).
[0059] In the description of this utility model, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0061] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0062] In the description of this specification, the references to "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0063] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
[0064] In the description of this specification, the references to terms such as "Embodiment 1," "Embodiment 2," "Example," "Specific Example," or "Some Examples," etc., indicate that the specific method, apparatus, or feature described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, methods, apparatus, or features described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0065] 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, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A carbon fiber ankle rehabilitation protector characterized by, It includes a foot protector (1), an ankle joint cylindrical protrusion (2), an ankle joint cylindrical cover (3), a leg protector (4), and a rotating pin (5); the foot protector (1) has a U-shaped curved surface and is used to cover the heel and the inner and outer sides of the foot. The ankle joint cylindrical protrusion (2) is located at the upper apex of the inner and outer sides of the foot, directly opposite the ankle joint position. The lower end of the leg protector (4) is provided with an ankle joint cylindrical cover (3). The ankle joint cylindrical cover (3) is fitted on the outer periphery of the ankle joint cylindrical protrusion (2) and rotates around it. A rotating pin (5) is passed through the center of the ankle joint cylindrical cover (3) to rotatably connect with the ankle joint cylindrical protrusion (2); the foot protector (1), the ankle joint cylindrical protrusion (2), the ankle joint cylindrical cover (3), and the leg protector (4) are all made of carbon fiber.
2. The carbon fiber ankle rehabilitation brace of claim 1, wherein It also includes a fixing strap (6), the two ends of which are fixedly connected to the inner and outer sides of the foot of the foot guard plate (1), and the middle part of the fixing strap (6) is located directly below the foot plate.
3. The carbon fiber ankle rehabilitation brace of claim 2, wherein, It also includes an upper screw (7), which is detachably disposed above the rotating pin (5) to lock the relative rotation between the ankle joint cylindrical protrusion (2) and the ankle joint cylindrical cover (3).
4. The carbon fiber ankle rehabilitation brace of claim 3, wherein, It also includes a lower screw (8), which is detachably disposed below the rotating pin (5) to lock the relative rotation between the ankle joint cylindrical protrusion (2) and the ankle joint cylindrical cover (3) within a preset angle.
5. The carbon fiber ankle rehabilitation brace of claim 4, wherein, It also includes an upper pin (11). The outer end face of the ankle joint cylindrical protrusion (2) is horizontally provided with an upper strip groove (9) above the mounting location of the rotating pin (5). The corresponding outer circumferential surface of the ankle joint cylindrical cover (3) is provided with two upper locking holes (13). The two ends of the upper pin (11) are inserted into the two upper locking holes (13) and the middle part is embedded in the upper strip groove (9). The center position of the upper pin (11) is installed on the ankle joint cylindrical cover (3) by an upper screw (7). The width of the upper pin (11) is equal to the width of the upper strip groove (9).
6. The carbon fiber ankle rehabilitation brace of claim 5, wherein, It also includes a lower strip pin (12). The outer end face of the ankle joint cylindrical protrusion (2) is horizontally provided with a lower strip groove (10) below the mounting location of the rotating pin (5). The corresponding outer circumferential surface of the ankle joint cylindrical cover (3) is provided with two lower locking holes (14). The two ends of the lower strip pin (12) are inserted into the two lower locking holes (14) and the middle part is embedded in the lower strip groove (10). The center position of the lower strip pin (12) is installed on the ankle joint cylindrical cover (3) by a lower screw (8). The width of the lower strip pin (12) is smaller than the width of the lower strip groove (10).
7. The carbon fiber ankle rehabilitation brace of claim 6, wherein, The width of the lower groove (10) gradually expands from the center to both ends in its length direction.
8. The carbon fiber ankle rehabilitation brace of claim 1, wherein, The foot guard plate (1) and the ankle joint cylindrical protrusion (2) are integrally molded structures made of carbon fiber.
9. The carbon fiber ankle rehabilitation brace of claim 1, wherein, The ankle cylindrical cover (3) and the leg guard plate (4) are integrally molded structures made of carbon fiber.
10. The carbon fiber ankle rehabilitation brace of claim 9, wherein, The ankle joint cylindrical cover (3) and the leg guard plate (4) are of uniform thickness.