Stress-adjustable knee joint brace for magnetic resonance examination

By incorporating Velcro, inflatable airbags, and elastic pads, the design enables flexible adjustment of knee brace stress, solving the problems of instability and poor comfort in existing knee braces, and improving the accuracy of MRI examinations and patient tolerance.

CN224070594UActive Publication Date: 2026-04-03TONGJI HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-02
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

Existing knee braces cannot flexibly adjust the applied stress, resulting in instability and poor comfort of the patient's knee joint during MRI examinations, which affects the accuracy of the examination.

Method used

An adjustment device comprising Velcro, an inflatable airbag, an elastic pad, and a spring was designed. The Velcro allows for easy assembly and disassembly, facilitating the adjustment of the fit between the knee brace and the patient's knee joint. The inflatable airbag adjusts the stress level, the elastic pad automatically adjusts the pressure distribution, and the spring absorbs impact, ensuring the stability and comfort of the knee joint.

Benefits of technology

It improves the wearing comfort and stability of knee braces, reduces stress unevenness and imaging artifacts, enhances the accuracy and reliability of magnetic resonance imaging, and protects patients' knee joints from rigid stress damage.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a magnetic resonance examination knee joint brace with adjustable stress, which belongs to the technical field of knee joint braces, and comprises two torsion tables, an upper adjusting brace and a lower adjusting brace, adjusting devices are respectively arranged in the upper adjusting brace and the lower adjusting brace, each adjusting device comprises a magic tape, and the magic tapes are arranged on the torsion tables. A stabilizing ring is fixedly connected to the other side of the hook-and-loop fastener, and six telescopic rods are fixedly connected to the surface of the stabilizing ring. According to the knee joint brace, the hook-and-loop fasteners, the rubber pads, the inflatable air bags and the elastic gaskets are arranged, the knee joint of a patient can make contact with the rubber pads and be tightly attached to the rubber pads, the attaching degree between the knee joint brace and the knee joint of the patient can be adjusted through the inflation function of the inflatable air bags, and the stress applied to the knee joint of the patient by the knee joint brace can be adjusted; therefore, the knee joint of the patient can be effectively protected from being hurt by rigid stress, and the wearing comfort and stability of the knee joint brace can be improved.
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Description

Technical Field

[0001] This utility model belongs to the field of knee joint brace technology, specifically relating to a magnetic resonance imaging knee joint brace with adjustable stress. Background Technology

[0002] A knee brace is an assistive device used on the knee joint, primarily to provide support, fixation, protection, or correction for the knee joint. It is typically made of a combination of various materials, including but not limited to plastics, metals, fabrics, and cushioning materials, and achieves its specific function on the knee joint through mechanical structure design.

[0003] Existing knee braces cannot flexibly adjust the stress they apply to the patient's knee joint, making the knee joint susceptible to injury from the rigid stress of the brace. Furthermore, during MRI examinations, the patient's knee joint cannot maintain a stable and comfortable stress state, potentially affecting the accuracy of the examination. Therefore, an adjustable stress knee brace for MRI examinations is needed to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a magnetic resonance imaging (MRI) knee brace with adjustable stress to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a stress-adjustable magnetic resonance imaging (MRI) knee joint brace, comprising two torsion tables, an upper adjustment brace, and a lower adjustment brace. The upper and lower adjustment braces are each equipped with an adjustment device. Each adjustment device includes Velcro fasteners, with a stabilizing ring fixedly connected to the other side of the Velcro fasteners. Six telescopic rods are fixedly connected to the surface of the stabilizing ring. Force-limiting plates are fixedly connected to the telescopic ends of the six telescopic rods. Springs are sleeved and connected to the surfaces of the six telescopic rods. An inflatable airbag is fixedly connected to the other side of the force-limiting plate. A threaded sealing plug is threadedly connected to the top of the inflatable airbag. An elastic pad is fixedly connected to one side of the inflatable airbag, and a rubber pad is fixedly connected to one side of the elastic pad.

[0006] By designing the above structure, when it is necessary to adjust the stress on the knee joint of the knee brace, the Velcro allows for easy assembly and disassembly of the knee brace and adjustment device. This facilitates disassembly, maintenance, and installation of the adjustment device by medical staff. When the patient's knee joint is placed in the upper and lower braces, it can contact and fit tightly with the rubber pads. The inflation function of the airbag can adjust the fit between the knee brace and the patient's knee joint, as well as the amount of stress applied to the knee joint. This effectively protects the patient's knee joint from rigid stress injuries, thereby improving the wearing comfort and stability of the knee brace. Simultaneously, the increased friction of the rubber pads further enhances the knee brace's performance. The combined effect of both ensures uniform and stable friction between the knee brace and the knee joint, preventing loosening or displacement. This reduces uneven stress and imaging artifacts caused by loose knee brace, enhancing the accuracy and reliability of MRI scans. Furthermore, the elastic design of the elastic pad automatically adjusts pressure distribution based on minute displacements and deformations of the knee joint, preventing stress concentration from causing additional damage. This ensures the patient's knee remains in a stable and comfortable stress state throughout the MRI scan, improving both the accuracy of the examination and patient tolerance.

[0007] As a preferred embodiment, each of the two torsion tables has an upper connecting plate on one side surface and a lower connecting plate on the other side surface.

[0008] As a preferred embodiment, each of the two upper connecting plates has a scale on one side surface, the two upper connecting plates are fixedly connected to the upper adjusting bracket, and the two lower connecting plates are fixedly connected to the lower adjusting bracket.

[0009] As a preferred embodiment, the Velcro is attached to the inner walls of the upper and lower adjustable supports.

[0010] As a preferred embodiment, one end of the spring is fixedly connected to one side surface of the stabilizing ring.

[0011] As a preferred embodiment, the other end of the spring is fixedly connected to one side surface of the force-limiting plate.

[0012] By incorporating a spring, the spring compresses under stress to generate an elastic force. This elastic force absorbs and reduces the impact force from the patient, thereby reducing the range of motion of the patient's knee joint. Simultaneously, when the spring is not under stress, it can drive the adjustment device to reset under the elastic force.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention, through the inclusion of Velcro, rubber pads, an inflatable airbag, and elastic pads, allows for the easy assembly and disassembly of the knee brace and adjustment device when adjustments to the stress on the knee joint are needed. This facilitates disassembly, maintenance, and installation of the adjustment device by medical personnel. When the patient's knee joint is placed in the upper and lower braces, it contacts and fits tightly against the rubber pads. The inflation function of the airbag adjusts the fit between the knee brace and the patient's knee joint, as well as the amount of stress applied to the knee joint. This effectively protects the patient's knee joint from rigid stress injuries, thereby improving the comfort and stability of the knee brace. With the combined effect of the increased friction from the rubber pad and the knee joint, the friction between the knee brace and the knee joint is ensured to be uniform and stable, preventing loosening or displacement. This reduces uneven stress and imaging artifacts caused by loose knee brace, thereby enhancing the accuracy and reliability of MRI examinations. Furthermore, the elastic design of the elastic pad automatically adjusts the pressure distribution according to minute displacements and deformations of the knee joint, preventing stress concentration from causing additional damage to the patient's knee joint. It also ensures that the patient's knee joint remains in a stable and comfortable stress state throughout the MRI examination, thus improving the accuracy of the examination and patient tolerance.

[0015] This invention incorporates a spring that compresses to generate an elastic force when subjected to force. This elastic force absorbs and reduces the impact force from the patient, thereby reducing the range of motion of the patient's knee joint. Simultaneously, when the spring is not under force, it can drive the adjustment device to reset under the elastic force. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention from the front view;

[0017] Figure 2 This is a schematic diagram of the structure of the adjusting device of this utility model;

[0018] Figure 3 This is a side sectional view of the adjusting device of this utility model.

[0019] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Torsion table; 2. Upper connecting plate; 3. Lower connecting plate; 4. Dial; 5. Upper adjusting bracket; 6. Lower adjusting bracket; 7. Adjusting device; 701. Velcro; 702. Stabilizing ring; 703. Telescopic rod; 704. Force limiting plate; 705. Spring; 706. Inflatable airbag; 707. Threaded sealing plug; 708. Elastic gasket; 709. Rubber pad. Detailed Implementation

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

[0022] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0023] Please see Figure 1-4This utility model provides a stress-adjustable magnetic resonance imaging (MRI) knee brace, including two torsion tables 1, an upper adjustable brace 5, and a lower adjustable brace 6. The upper and lower adjustable braces 5 and 6 are respectively equipped with adjustment devices 7. Each adjustment device 7 includes a Velcro 701, with a stabilizing ring 702 fixedly connected to the other side of the Velcro 701. Six telescopic rods 703 are fixedly connected to the surface of the stabilizing ring 702. Each telescopic end of the six telescopic rods 703 is fixedly connected to a force-limiting plate 704. Springs 705 are sleeved and connected to the surfaces of the six telescopic rods 703. An inflatable airbag 706 is fixedly connected to the other side surface. A threaded sealing plug 707 is threadedly connected to the top of the inflatable airbag 706. An elastic pad 708 is fixedly connected to one side surface of the inflatable airbag 706, and a rubber pad 709 is fixedly connected to one side surface of the elastic pad 708. By setting up Velcro 701, rubber pad 709, inflatable airbag 706, and elastic pad 708, when it is necessary to adjust the stress of the knee joint brace on the knee joint, the Velcro 701 can be used to detach and assemble the knee joint brace and the adjustment device 7, thereby facilitating the disassembly, maintenance, installation, and use of the adjustment device 7 by medical staff. When the patient's knee joint is placed in the upper adjustable brace 5 and the lower adjustable brace 6, the patient's knee joint can contact and fit tightly with the rubber pad 709. The inflation function of the air bladder 706 can adjust the fit between the knee brace and the patient's knee joint, and can also adjust the amount of stress applied to the patient's knee joint by the knee brace. This can effectively protect the patient's knee joint from rigid stress damage, thereby improving the wearing comfort and stability of the knee brace. At the same time, with the rubber pad 709 increasing the friction, the combined effect of both can ensure that the friction between the knee brace and the knee joint is uniform and stable. This design ensures that the connection remains stable and avoids loosening or displacement, thereby reducing uneven stress and imaging artifacts caused by loose knee braces. This enhances the accuracy and reliability of MRI examinations. Furthermore, the elastic design of the elastic pad 708 automatically adjusts the pressure distribution based on minute displacements and deformations of the knee joint, preventing stress concentration from causing additional damage to the patient's knee joint. It also ensures that the patient's knee joint remains in a stable and comfortable stress state throughout the MRI examination, thus improving the accuracy of the examination and patient tolerance.

[0024] Each of the two torsion tables 1 has an upper connecting plate 2 on one side surface and a lower connecting plate 3 on the other side surface.

[0025] The two upper connecting plates 2 are respectively provided with a scale 4 on one side surface. The two upper connecting plates 2 are respectively fixedly connected to the upper adjusting support 5, and the two lower connecting plates 3 are respectively fixedly connected to the lower adjusting support 6.

[0026] Velcro 701 is attached to the inner walls of the upper adjustment bracket 5 and the lower adjustment bracket 6.

[0027] One end of the spring 705 is fixedly connected to one side surface of the stabilizing ring 702.

[0028] The other end of the spring 705 is fixedly connected to one side surface of the force-limiting plate 704. By setting the spring 705, the spring 705 will compress and generate elastic force when subjected to force. The elastic force of the spring 705 can absorb and reduce the impact force from the patient, thereby reducing the swaying amplitude of the patient's knee joint. At the same time, when the spring 705 is not subjected to force, it can drive the adjustment device 7 to reset under the elastic force.

[0029] The working principle and usage process of this utility model are as follows: When it is necessary to adjust the stress of the knee joint brace on the knee joint, the Velcro 701 is attached to the inner wall of the upper adjustment brace 5 and the lower adjustment brace 6 to connect and install the knee joint brace with the adjustment device 7. When the patient's knee joint is placed in the upper adjustment brace 5 and the lower adjustment brace 6, the patient's knee joint will contact and fit tightly with the rubber pad 709 on the adjustment device 7. Then, the threaded sealing plug 707 is unscrewed to inflate the airbag 706. During the inflation process, the airbag 706 will apply an adjustable force. When force is applied to the patient's knee joint, the combined action of the inflatable airbag 706 and the rubber pad 709 ensures a more stable connection between the knee brace and the patient's knee joint. At the same time, the inflatable airbag 706 applies stress to the elastic pad 708 during inflation. The elastic design of the elastic pad 708 can automatically adjust the pressure distribution according to the slight displacement and deformation of the knee joint, thereby avoiding stress concentration and additional damage to the joint. This allows for flexible adjustment of the stress on the knee brace.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stress-adjustable magnetic resonance imaging (MRI) knee brace, comprising two torsion tables (1), an upper adjustable brace (5), and a lower adjustable brace (6), characterized in that: The upper adjusting bracket (5) and the lower adjusting bracket (6) are respectively provided with adjusting devices (7). The adjusting device (7) includes a Velcro (701). A stabilizing ring (702) is fixedly connected to the other side of the Velcro (701). Six telescopic rods (703) are fixedly connected to the surface of the stabilizing ring (702). Force limiting plates (704) are fixedly connected to the telescopic ends of the six telescopic rods (703). Springs (705) are respectively sleeved and connected to the surface of the six telescopic rods (703). An inflatable airbag (706) is fixedly connected to the other side of the force limiting plate (704). A threaded sealing plug (707) is threadedly connected to the top of the inflatable airbag (706). An elastic pad (708) is fixedly connected to one side of the inflatable airbag (706). A rubber pad (709) is fixedly connected to one side of the elastic pad (708).

2. The knee joint brace with adjustable stress magnitude for magnetic resonance imaging according to claim 1, characterized in that: One side surface of each of the two torsion tables (1) is provided with an upper connecting plate (2), and the other side surface of each of the two torsion tables (1) is provided with a lower connecting plate (3).

3. The knee joint brace with adjustable stress magnitude for magnetic resonance imaging according to claim 2, characterized in that: The two upper connecting plates (2) are respectively provided with a dial (4) on one side surface. The two upper connecting plates (2) are respectively fixedly connected to the upper adjusting bracket (5), and the two lower connecting plates (3) are respectively fixedly connected to the lower adjusting bracket (6).

4. The knee joint brace with adjustable stress magnitude for magnetic resonance imaging according to claim 1, characterized in that: The Velcro (701) is attached to the inner walls of the upper adjustment bracket (5) and the lower adjustment bracket (6).

5. The knee joint brace with adjustable stress magnitude for magnetic resonance imaging according to claim 1, characterized in that: One end of the spring (705) is fixedly connected to one side surface of the stabilizing ring (702).

6. The knee joint brace for magnetic resonance imaging with adjustable stress according to claim 5, characterized in that: The other end of the spring (705) is fixedly connected to one side surface of the force-limiting plate (704).