Lower limb braking and foot drop preventing device

By designing a lower limb braking and anti-foot drop device with a rotatable connection between the bottom support and leg support, the problems of blood circulation obstruction and skin damage caused by restraint straps are solved, achieving personalized fixation and comfortable support, preventing foot drop, and improving the patient's rehabilitation effect.

CN223995037UActive Publication Date: 2026-03-17ZHONGSHAN HOSPITAL FUDAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-11
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

In existing technologies, restraint straps used for lower limb fixation can easily lead to impaired blood circulation, skin damage, and foot drop, affecting the patient's rehabilitation process and quality of life.

Method used

Design a lower limb braking and anti-foot drop device, including a bottom support and a leg support. The bottom support is rotatably connected to the leg support and fixed to the bed by a connector. It provides personalized fixation using restraints and an angle adjustment mechanism to avoid the restraint straps being directly tied to the feet. Combined with a cushioning pad and heat dissipation holes, it improves comfort.

Benefits of technology

It effectively prevents blood circulation disorders and skin damage, reduces limb swelling and pain, prevents foot drop, improves patient comfort and safety, and adapts to individual differences among different patients.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a lower limb braking and foot drop prevention device which comprises a bottom supporting piece and a leg supporting piece, the bottom supporting piece is used for supporting feet, the leg supporting piece is used for supporting legs, the bottom supporting piece is rotatably connected to the leg supporting piece, a connecting piece is arranged on the back face of the bottom supporting piece, and the connecting piece is used for fixedly connecting the bottom supporting piece to a bed. The foot is placed in the bottom supporting piece, one end of the restraint strap is bound to the connecting piece, and the other end of the restraint strap is bound to the bed tail, so that the restraint strap is not bound to the foot, blood circulation disorder of the foot and lower limbs connected with the foot is avoided, skin damage is avoided, compression on the lower limbs can be relieved, and the risk of blood circulation blocking is reduced; therefore, the occurrence of limb swelling and pain is reduced; the leg supporting piece supports the leg, the bottom supporting piece and the leg supporting piece are rotatably connected, so that a fixed angle can be formed between the foot and the leg, foot drop caused by long-time use of the restraint strap is prevented, and the device can be adjusted according to specific conditions of a patient.
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Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a lower limb immobilization and anti-foot drop device. Background Technology

[0002] In modern medicine, many clinical procedures require immobilization of the patient's lower limbs to prevent postoperative complications. These procedures include, but are not limited to, interventional treatments via femoral artery puncture, implantation of temporary pacemakers, and care for unconscious patients. Maintaining lower limb stability and safety is crucial in these situations. Currently, the commonly used method for lower limb immobilization in clinical practice is to use restraint straps to fix the patient's lower limbs to the bed. This method typically involves securing one end of the restraint strap to the patient's ankle and the other end to the foot of the bed. While this traditional immobilization method achieves some degree of lower limb fixation, it has several shortcomings.

[0003] First, the use of restraints can impair blood circulation, especially with prolonged immobilization, potentially leading to lower limb circulatory disorders, resulting in swelling, pain, and even more serious complications. Second, the direct pressure from the restraints can damage the patient's skin, particularly in elderly patients with more delicate skin or those with underlying medical conditions, who are at higher risk of skin injury. Furthermore, prolonged immobilization can also lead to foot drop, affecting the patient's recovery process and quality of life. Utility Model Content

[0004] The purpose of this invention is to overcome the risks of lower limb blood circulation disorders and foot drop that may occur when the restraint straps of the prior art fix the lower limbs for a long time, and to provide a lower limb immobilization and anti-foot drop device.

[0005] To achieve the above objectives, this utility model provides a lower limb braking and anti-sagging device, including a bottom support and a leg support. The bottom support is used to support the feet, and the leg support is used to support the legs. The bottom support is rotatably connected to the leg support. A connector is provided on the back of the bottom support, which is used to fix the bottom support to the bed.

[0006] Preferably, the lower limb braking and anti-foot drop device further includes a side portion connected to the outline of the base support and extending in a direction away from the back of the base support, wherein the foot is accommodated within a first space formed by the side portion and the base support.

[0007] Preferably, the lower limb braking and anti-foot drop device further includes a first restraint member, the two ends of which are respectively connected to both sides of the edge portion, the first restraint member being used to fix the foot within the first space; and / or,

[0008] The lower limb braking and anti-foot drop device also includes a second restraint member, the two ends of which are respectively connected to the two ends of the leg support member, and the second restraint member fixes the leg to the leg support member.

[0009] Preferably, the lengths of both the first and second restraint members are adjustable; or,

[0010] The edge is provided with at least two sets of the first restraint members; and / or, the leg support is provided with at least two sets of the second restraint members.

[0011] Preferably, the bottom support is a plane, and a first through hole is provided on the bottom support.

[0012] Preferably, the connector is provided with a second through hole; and / or,

[0013] The front of the bottom support is also provided with a cushioning pad.

[0014] Preferably, the leg support is arc-shaped; and / or,

[0015] The leg support has heat dissipation holes along its extension direction.

[0016] Preferably, the lower limb braking and anti-foot drop device further includes an angle adjustment mechanism, which includes a first component and a second component. The first component is fixedly connected to the bottom support member, and the second component is fixedly connected to the leg support member. The first component is rotatable relative to the second component.

[0017] Preferably, the lower limb braking and anti-foot drop device further includes a threaded rod and a nut.

[0018] The first component includes a U-shaped plate, the second component includes a right-angle plate, the opening of the U-shaped plate is provided with a threaded rod, the threaded rod passes through the right-angle plate, and the nut fixes the right-angle plate to the U-shaped plate.

[0019] Preferably, the angle adjustment range between the bottom support and the leg support is 75 degrees to 150 degrees.

[0020] With the above technical solution, the feet are placed inside the base support, one end of the restraint strap is tied to the connector, and the other end is tied to the foot of the bed. This means that the restraint strap is not directly tied to the feet, which will not cause blood circulation obstruction in the feet and the lower limbs connected to the feet, nor will it cause skin damage. It can reduce pressure on the lower limbs, reduce the risk of blood circulation obstruction, and thus reduce the occurrence of limb swelling and pain. The leg support supports the legs, and the rotatable connection design between the base support and the leg support allows the feet to form a fixed angle with the legs, preventing foot drop caused by prolonged use of the restraint strap. This allows the device to be adjusted according to the patient's specific situation. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the lower limb braking and anti-foot drop device of the present invention.

[0022] Figure 2 This is a three-dimensional structural diagram of the bottom support part of the lower limb braking and anti-foot drop device of this utility model embodiment;

[0023] Figure 3 This is a three-dimensional structural diagram of the leg support component of the lower limb braking and anti-foot drop device of this utility model embodiment.

[0024] Explanation of reference numerals in the attached figures

[0025] 1. Lower limb braking and anti-foot drop device; 2. Base support; 21. Connector; 211. Second through hole; 22. First through hole; 23. Buffer pad; 3. Leg support; 31. Heat dissipation hole; 4. Side; 5. First restraint; 6. Second restraint; 7. Angle adjustment mechanism; 71. First component; 711. U-shaped plate; 72. Second component; 721. Right angle plate; 8. Threaded rod; 9. Nut. Detailed Implementation

[0026] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to exemplarily illustrate the principles of this utility model, but should not be used to limit the scope of this utility model. This utility model can be implemented in many different forms and is not limited to the specific embodiments of the utility model described herein, but includes all technical solutions falling within the scope of the claims.

[0027] It should be noted that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] Furthermore, the terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well.

[0029] All terms used in this invention have the same meaning as understood by one of ordinary skill in the art to which this invention pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0030] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0031] This embodiment provides a lower limb braking and anti-drooping device, such as Figures 1-3 As shown, it includes a base support 2 and a leg support 3. The base support 2 is used to support the feet, and the leg support 3 is used to support the legs. The base support 2 is rotatably connected to the leg support 3. A connector 21 is provided on the back of the base support 2, which is used to fix the base support 2 to the bed.

[0032] When using this device, one end of the restraint strap is tied to the connector 21, and the other end is tied to the foot of the bed, so that the feet are not restrained. This prevents blood circulation obstruction in the feet and the lower limbs connected to the feet, and also prevents skin damage. It can reduce pressure on the lower limbs, reduce the risk of blood circulation obstruction, and thus reduce the occurrence of limb swelling and pain. The leg support 3 supports the legs. The rotatable connection design between the bottom support 2 and the leg support 3 allows the feet to form a fixed angle with the legs, preventing foot drop caused by prolonged use of the restraint strap. This allows the device to be adjusted according to the patient's specific situation.

[0033] In some embodiments, the lower limb braking and anti-foot drop device 1 further includes a side portion 4, which is connected to the contour of the base support 2 and extends in a direction away from the back of the base support 2. The foot is accommodated within a first space formed by the side portion 4 and the base support 2. The side portion 4 provides additional support for the foot, enhancing the stability of the overall structure and ensuring that the foot does not droop or slip off the base support 2 during braking. Furthermore, the first space formed by the side portion 4 and the base support 2 effectively accommodates the foot, providing a safe environment, reducing interference from external factors on the foot, and lowering the risk of accidental injury.

[0034] In some embodiments, the lower limb braking and anti-foot drop device 1 further includes a first restraint member 5, with both ends of the first restraint member 5 connected to both sides of the side portion 4. The first restraint member 5 is used to fix the foot within the first space, preventing displacement of the foot during braking, reducing the risk of injury caused by foot slippage or accidental movement, enhancing patient safety during braking, and thus ensuring lower limb stability. The combination of the first restraint member 5, the side portion 4, and the bottom support member 2 forms a more stable overall structure, further enhancing the stability of the device and ensuring patient safety during braking.

[0035] In some embodiments, the lower limb braking and anti-foot drop device 1 further includes a second restraint member 6, with its two ends connected to the two ends of the leg support member 3. The second restraint member 6 fixes the leg to the leg support member 3, preventing displacement or inappropriate movement of the leg during braking, thereby ensuring the overall stability of the lower limb, reducing the risk of injury caused by leg slippage or accidental movement, and enhancing patient safety during braking. The combination of the second restraint member 6 and the leg support member 3 forms a more stable support structure, further enhancing the overall stability of the device and ensuring that the patient's leg maintains the correct posture during braking.

[0036] In some embodiments, the length of the first restraint member 5 is adjustable; the adjustable length allows the restraint member to be adjusted according to the foot size of different patients, providing a personalized fixation effect; by adjusting the length of the restraint member, excessive pressure on the patient's legs and feet can be avoided, reducing discomfort and ensuring that each patient can obtain the best support and comfort.

[0037] In some embodiments, the adjustability of the length of the second restraint 6 allows it to adapt to the leg size and shape of different patients, providing a personalized fixation effect. By adjusting the length of the restraint, excessive pressure on the legs can be avoided, reducing discomfort, especially during prolonged immobilization, thus improving the overall comfort experience of the patient.

[0038] In some embodiments, the edge 4 is provided with at least two sets of first restraints 5; multiple sets of first restraints 5 can provide more comprehensive fixation, ensuring the stability of the foot within the first space and reducing the risk of accidents caused by foot movement. In addition, multiple first restraints 5 can distribute the fixation force to multiple points, reducing pressure on a specific area of ​​the foot, reducing discomfort and the risk of skin damage, and are especially suitable for patients with more fragile skin.

[0039] In some embodiments, the leg support 3 is provided with at least two sets of second restraints 6. Multiple sets of second restraints 6 provide more comprehensive fixation, ensuring leg stability on the leg support 3 and reducing the risk of accidents caused by leg movement. Furthermore, by providing multiple sets of restraints, the fixing force can be distributed to multiple points, reducing pressure on specific areas of the leg and minimizing discomfort and the risk of skin damage.

[0040] In some embodiments, the bottom support 2 is a plane. The plane bottom support 2 provides a uniform support surface, which can effectively distribute the weight of the patient's lower limbs. The plane can better fit the shape of the patient's foot, providing more comfortable support and reducing the pressure caused by an unsuitable shape. The bottom support 2 is provided with a first through hole 22. The first through hole 22 can effectively reduce the overall weight of the bottom support 2. The first through hole 22 can also be used as an abscess.

[0041] In some embodiments, the connector 21 is provided with a second through hole 211; the second through hole 211 can provide additional fixing points, making the connection between the connector 21 and the bed or other support structure more stable and reducing the risk of displacement caused by movement or external force.

[0042] In some embodiments, the front of the base support 2 is also provided with a cushioning pad 23. The cushioning pad 23 can effectively reduce the direct pressure of the base support 2 on the patient's feet, provide a soft contact surface, reduce discomfort caused by prolonged contact, improve the patient's overall comfort experience, reduce the risk of skin damage and pressure sores, and protect the patient's skin health.

[0043] In some embodiments, the leg support 3 is arc-shaped; the arc design better conforms to the natural curve of the patient's leg, providing more comfortable support, reducing the pressure caused by an unsuitable shape, and improving the patient's overall comfort experience. Furthermore, the arc design can evenly distribute the weight of the leg over a larger contact area, reducing pressure on specific areas and minimizing discomfort and the risk of skin damage.

[0044] In some embodiments, the leg support 3 is provided with heat dissipation holes 31 along its extending direction. The heat dissipation holes 31 can promote air circulation, increase the ventilation of the leg support 3, help keep the legs dry and comfortable, and reduce discomfort caused by moisture. In addition, the heat dissipation holes 31 can effectively dissipate the heat generated by prolonged contact with the legs, lower the leg temperature, and prevent skin discomfort caused by overheating.

[0045] In some embodiments, the lower limb braking and anti-foot drop device 1 further includes an angle adjustment mechanism 7. The angle adjustment mechanism 7 includes a first component 71 and a second component 72. The first component 71 is fixedly connected to the base support 2, and the second component 72 is fixedly connected to the leg support 3. The first component 71 is rotatable relative to the second component 72. The angle adjustment mechanism 7 allows medical personnel to flexibly adjust the angle between the leg and foot according to the patient's specific situation and needs, providing personalized support and comfort. By adjusting the leg angle, pressure on joints and muscles can be reduced, pain and discomfort caused by improper posture can be decreased, and the patient's overall comfort experience can be improved.

[0046] In some embodiments, the lower limb braking and anti-foot drop device 1 further includes a threaded rod 8 and a nut 9. The first component 71 includes a U-shaped plate 711, and the second component 72 includes a right-angle plate 721. The U-shaped plate 711 has a threaded rod 8 at its opening, which passes through the right-angle plate 721. The nut 9 fixes the right-angle plate 721 to the U-shaped plate 711.

[0047] Specifically, such as Figure 2 As shown, one end of the U-shaped plate 711 is arc-shaped and fixedly connected to the bottom support 2. A threaded rod 8 is rotatably installed inside the U-shaped plate 711. The part of the threaded rod 8 located inside the U-shaped plate 711 is fixedly connected to a right-angle plate 721. The other side of the right-angle plate 721 is fixedly connected to the leg support plate. A nut 9 is screwed onto the part of the threaded rod 8 located outside the U-shaped plate 711. When adjusting the angle between the bottom support 2 and the leg support 3, simply unscrew the nut 9 from the threaded rod 8 to allow the threaded rod 8, the right-angle plate 721, and the leg support plate to rotate along the U-shaped plate 711. The axis of rotation is the threaded rod 8, thereby adjusting the angle between the bottom support 2 and the leg support 3. After adjustment, tighten the nut 9 onto the threaded rod 8 to fix the leg support plate.

[0048] The design of the threaded rod 8 and nut 9 ensures a secure connection between the U-shaped plate 711 and the right-angle plate 721, enhancing the overall structural stability and preventing loosening or displacement during use. By rotating the threaded rod 8, the relative position between the U-shaped plate 711 and the right-angle plate 721 can be easily adjusted, allowing for flexible adjustment of the leg angle to meet the needs of different patients. The design of the threaded rod 8 and nut 9 makes the adjustment process simple and intuitive, allowing medical staff to quickly make adjustments, improving work efficiency and reducing nursing time. The combined design of the U-shaped plate 711 and the right-angle plate 721 can adapt to different leg shapes and sizes, providing personalized support and enhancing the versatility of the device. The metal materials of the threaded rod 8 and nut 9 typically have high durability, able to withstand wear and tear from long-term use, extending the lifespan of the device.

[0049] In some embodiments, the angle adjustment range between the base support 2 and the leg support 3 is 75 to 150 degrees. This 75- to 150-degree adjustment range provides greater flexibility, allowing healthcare professionals to select the appropriate leg angle based on the patient's specific condition and needs, providing personalized support. The wide angle adjustment range helps patients find the most comfortable leg position, reducing pain and discomfort caused by inappropriate posture and improving the patient's overall comfort. A reasonable leg angle can improve blood circulation, reduce the risk of circulatory disorders caused by prolonged immobilization, and promote patient recovery. Different patients' positions and needs may vary; the 75- to 150-degree adjustment range flexibly accommodates these changes, ensuring the device always maintains effective fixation and support.

[0050] The preferred embodiments of this utility model have been described in detail above; however, this utility model is not limited thereto. Within the scope of the technical concept of this utility model, various simple modifications can be made to the technical solution. To avoid unnecessary repetition, this utility model will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in this utility model and all fall within the protection scope of this utility model.

Claims

1. A lower limb braking and anti-foot-drop device (1) comprising a foot support member (2) and a leg support member (3), characterized in that, The bottom support member (2) is used for supporting the foot, the leg support member (3) is used for supporting the leg, the bottom support member (2) is rotatably connected to the leg support member (3), The back surface of the bottom support member (2) is provided with a connecting member (21), the connecting member (21) is used for fixedly connecting the bottom support member (2) to the bed, The lower limb braking and anti-foot drop device (1) further comprises an angle adjusting mechanism (7), the angle adjusting mechanism (7) comprises a first component (71) and a second component (72), the first component (71) is fixedly connected to the bottom support member (2), the second component (72) is fixedly connected to the leg support member (3), and the first component (71) can rotate relative to the second component (72).

2. The device (1) for braking and antiallowing lower limbs according to claim 1, characterized in that, The lower limb braking and anti-foot drop device (1) further comprises a side part (4), the side part (4) is connected to the contour of the bottom support member (2) and extends away from the back surface of the bottom support member (2), and the foot is accommodated in a first space formed by the side part (4) and the bottom support member (2).

3. The device (1) according to claim 2, characterized in that The lower limb braking and anti-foot drop device (1) further comprises a first binding member (5), both ends of the first binding member (5) are connected to both sides of the side part (4), and the first binding member (5) is used for fixing the foot in the first space; and / or, The lower limb braking and anti-foot drop device (1) further comprises a second binding member (6), both ends of the second binding member (6) are connected to both ends of the leg support member (3), and the second binding member (6) fixes the leg on the leg support member (3).

4. The device (1) according to claim 3, characterized in that The length of the first binding member (5) and the second binding member (6) can be adjusted; or, The side part (4) is provided with at least two groups of the first binding member (5); and / or, the leg support member (3) is provided with at least two groups of the second binding member (6).

5. The device (1) according to any one of claims 1-4, characterized in that, The bottom support member (2) is a plane, and a first through hole (22) is arranged on the bottom support member (2).

6. The device (1) according to any one of claims 1-4, characterized in that, The connecting member (21) is provided with a second through hole (211); and / or, The front surface of the bottom support member (2) is further provided with a buffer pad (23).

7. Device (1) according to any one of claims 1-4, characterized in that The leg support member (3) is arc-shaped; and / or, The leg support member (3) is provided with a heat dissipation hole (31) along the extension direction thereof.

8. The device (1) for braking and anticalcaneation of the lower limbs according to claim 1, characterized in that, The lower limb braking and anti-foot drop device (1) further comprises a threaded rod (8) and a nut (9), The first component (71) comprises a U-shaped plate (711), the second component (72) comprises a right-angle plate (721), the threaded rod (8) is arranged at the opening of the U-shaped plate (711), the threaded rod (8) penetrates through the right-angle plate (721), and the nut (9) fixes the right-angle plate (721) on the U-shaped plate (711).

9. Apparatus (1) according to claim 1 or 8, characterized in that The angle adjusting range between the bottom support member (2) and the leg support member (3) is 75 degrees to 150 degrees.