An ankle joint biomechanical assessment and rehabilitation device

Abstract

This utility model relates to the field of medical device technology, and in particular to an ankle joint biomechanical assessment and rehabilitation device, comprising: a foot pedal assembly, including a foot pedal, a fixing member, and a first locking member disposed at the bottom of the side wall of the foot pedal; a positioning assembly, including a positioning block and a mating block detachably connected to the top of the positioning block; a first adjustment assembly, including a second guide post disposed on the upper end face of the positioning block and at least three first adjustment members disposed at the bottom of the mating block; a second adjustment assembly, including a second locking member disposed on the upper end face of the mating block, a first snap-fit ​​member sleeved around the locking member, and a first mating member threadedly connected to the end of the second locking member, wherein rotating the first mating member in both directions releases and locks the first locking member; and a third adjustment assembly, including a second snap-fit ​​member fixedly connected to the top of the first snap-fit ​​member and sleeved around the first locking member, and a second mating member threadedly connected to the end of the first locking member, wherein rotating the second mating member in both directions releases and locks the second snap-fit ​​member.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an ankle joint biomechanical assessment and rehabilitation device. Background Technology

[0002] Ankle stress position examination is a crucial method for diagnosing ligament injuries and joint instability. Currently, clinical practice mainly relies on manual manipulation by physicians, but this method suffers from inaccurate angle control (difficulty in quantifying inversion / exversion, internal / external rotation, and flexion / extension angles) and unstable heel fixation (prone to slippage during force application). Consequently, examination results are highly influenced by the operator's experience and have poor repeatability. Existing assistive devices (such as simple fixation frames) can provide basic support, but they are generally limited in function (supporting only single-plane adjustment), unable to achieve precise control of multi-dimensional composite angles, and lack stable fixation structures for the heel. Ultimately, this affects the reliability of the examination and is not conducive to objectively assessing the degree of ankle joint injury.

[0003] Furthermore, as a vital weight-bearing joint, the ankle's postoperative rehabilitation directly impacts the recovery of the patient's motor function. Currently, most ankle rehabilitation methods rely on manual assistance from physical therapists, which suffers from high intensity, low training precision, and uncontrollable rehabilitation cycles. Existing ankle rehabilitation equipment primarily focuses on sagittal flexion-extension exercises, lacking sufficient control over coronal inversion / exversion and horizontal internal / external rotation, failing to meet the demands of progressive postoperative rehabilitation for angular precision and diverse movement patterns (inversion / exversion, internal / external rotation, flexion-extension). While traditional fixed braces can maintain joint stability, prolonged immobilization can lead to joint capsule contracture, reduced synovial fluid secretion, resulting in joint stiffness and muscle atrophy due to disuse.

[0004] Therefore, there is an urgent need to develop an ankle joint biomechanical assessment and rehabilitation device that can accurately control multi-dimensional motion parameters, conforms to biomechanical characteristics, and is easy to operate clinically, so as to objectively assess the degree of ankle joint injury. Furthermore, it can enable scientific and systematic rehabilitation training to effectively prevent postoperative complications such as ankle stiffness and muscle atrophy. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing an ankle joint biomechanical assessment and rehabilitation device, comprising:

[0006] A foot pedal assembly includes a foot pedal, a fixing member disposed on the top of the foot pedal side wall, and a first locking member disposed on the bottom of the foot pedal side wall, wherein the fixing member and the first locking member are respectively located on two opposite sides of the foot pedal;

[0007] The positioning component includes a positioning block and a mating block detachably connected to the top of the positioning block;

[0008] The first adjustment component for adjusting the inversion and eversion angles includes a second guide post disposed on the upper end face of the positioning block and at least three first adjustment members disposed on the bottom of the mating block and detachably connected to the second guide post. The second guide post cooperates with different first adjustment members to form different foot eversion angles.

[0009] The second adjustment component for adjusting the flexion-extension angle includes a second locking member disposed on the upper end face of the mating block, a first snap-fit ​​member sleeved around the second locking member, and a first mating member threaded to the end of the second locking member. The first mating member is rotated in both directions to loosen and lock the first snap-fit ​​member. The second locking member rotates in the first snap-fit ​​member in the loosened state to form different foot flexion-extension angles.

[0010] The third adjustment component for adjusting the inward and outward rotation angle includes a second snap-fit ​​member fixedly connected to the top of the first snap-fit ​​member and sleeved around the periphery of the first locking member, and a second mating member threadedly connected to the end of the first locking member. The second mating member is rotated in both directions to achieve the loosening and locking of the second snap-fit ​​member. The first locking member rotates in the second snap-fit ​​member in the loosened state to form different inward and outward rotation angles of the foot.

[0011] Furthermore, the fastener is a strap, with one end of the strap fixedly connected to the foot pedal, and the other end detachably connected to the fixed end after wrapping around the foot pedal.

[0012] Furthermore, the top of the positioning block is provided with a first guide post, and the bottom of the mating block is provided with a first guide groove that mates with the first guide post;

[0013] The second guide post is a column located on the top of the positioning block away from the first guide post. The center of the second guide post and the center of the first guide post are both located on the axis of the positioning block. The first adjusting member is a cylindrical groove that cooperates with the second guide post. The central axes of the three first adjusting members are coplanar and evenly distributed on an imaginary circle with the central axis of the first guide groove as the center. The included angle between the central axes of two adjacent first snap-fit ​​members is 15°.

[0014] Furthermore, the first locking member is a rotating shaft, and the outer wall of the end of the rotating shaft that is connected to the foot pedal is provided with a first toothed ring, and the side of the first locking member away from the first toothed ring is provided with a first threaded section.

[0015] Furthermore, the top of the mating block is provided with a mounting bracket, and the second locking member is fixedly provided on the mounting bracket. The second locking member is a rotating shaft. The outer wall of the end of the second locking member that is connected to the mounting bracket is provided with a second toothed ring, and the side of the second locking member away from the second toothed ring is provided with a second threaded section.

[0016] Furthermore, the first snap-fit ​​component is a guide sleeve, and the end of the first snap-fit ​​component near the mounting bracket is provided with a third toothed ring that matches the second toothed ring; the outer wall of the end of the first snap-fit ​​component without the third toothed ring is provided with a scale ring.

[0017] The first mating part is a locking handle, and the inner cavity of the first mating part is provided with an internal thread that matches the external thread on the second threaded section.

[0018] Furthermore, the second snap-fit ​​component is a guide sleeve, the axis of the second snap-fit ​​component is perpendicular to the axis of the first snap-fit ​​component, one end of the second snap-fit ​​component that cooperates with the first locking component is provided with a fourth toothed ring that matches the first toothed ring, and the outer wall of the end of the second snap-fit ​​component that does not have the fourth toothed ring is provided with a scale ring.

[0019] The second mating part is a locking handle, and the inner cavity of the second mating part is provided with an internal thread that matches the external thread on the first threaded section.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This utility model provides an ankle joint biomechanical assessment and rehabilitation device, which includes a first adjustment component for adjusting the inversion and eversion angles, a second adjustment component for adjusting the flexion and extension angles, and a third adjustment component for adjusting the internal and external rotation angles. It can realize multi-dimensional movement of the ankle joint (inversion and eversion, internal and external rotation, flexion and extension), and comprehensively promote the rehabilitation of the ankle joint. In addition, the device can also conduct ankle joint biomechanical assessment based on the pain caused by slightly increasing the adjustment angle.

[0022] 2. The second and third adjustment components of the ankle joint biomechanical assessment and rehabilitation device of this utility model can achieve the rotation of the rotating shaft by simply loosening the locking handle and pulling out the guide sleeve that is engaged with the toothed ring. In addition, the outer wall of the fixed guide sleeve is also provided with a scale ring, which can accurately control the angle of movement of the ankle joint in each direction, thereby improving the accuracy of stress position physical examination and clinical diagnostic efficiency when the ankle joint is injured.

[0023] 3. This utility model provides an ankle joint biomechanical assessment and rehabilitation device that can accurately measure the range of motion of the healthy ankle joint inversion, inversion, external rotation, flexion and extension. Therefore, an appropriate rehabilitation angle plan can be formulated, so that the entire postoperative rehabilitation process of the ankle joint can proceed gradually, ultimately helping patients to gradually increase the range of motion of the ankle joint within a painless or minimally painful range after the surgery. Attached Figure Description

[0024] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0025] Figure 1 This is a schematic diagram of the front and side structure of an ankle joint biomechanical assessment and rehabilitation device according to the present invention;

[0026] Figure 2 This is a schematic diagram of the dorsal structure of an ankle joint biomechanical assessment and rehabilitation device according to the present invention;

[0027] Figure 3 This is an exploded view of an ankle joint biomechanical assessment and rehabilitation device according to the present invention;

[0028] Figure 4 This is a schematic diagram of the first adjusting component of an ankle joint biomechanical assessment and rehabilitation device according to the present invention.

[0029] Figure Labels

[0030] 1: Foot pedal assembly;

[0031] 11: Fastener; 12: First locking element; 13: First gear ring;

[0032] 2: Positioning components;

[0033] 21: Locating block; 22: Mating block;

[0034] 211: First guide post;

[0035] 221: First guide groove;

[0036] 3: First adjustment component;

[0037] 31: Second guide post; 32: First adjusting component;

[0038] 4: Second adjustment component;

[0039] 41: Second locking element; 42: First locking element; 43: First mating element;

[0040] 411: Second gear ring;

[0041] 421: Third gear ring;

[0042] 5: Third adjustment component;

[0043] 51: Second connector; 52: Second mating part;

[0044] 511: Fourth gear ring. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model.

[0046] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0047] First Embodiment

[0048] Please see Figure 1-4 The technical solution of the ankle joint biomechanical assessment and rehabilitation device provided in this embodiment includes the following:

[0049] The foot pedal assembly 1 includes a foot pedal, a fixing member 11 disposed on the top of the foot pedal side wall, and a first locking member 12 disposed on the bottom of the foot pedal side wall, wherein the fixing member 11 and the first locking member 12 are respectively located on two opposite sides of the foot pedal.

[0050] The positioning component 2 includes a positioning block 21 and a mating block 22 that is detachably connected to the top of the positioning block 21;

[0051] The first adjustment component 3 for adjusting the inward and outward turning angle includes a second guide post 31 disposed on the upper end face of the positioning block 21 and at least three first adjustment members 32 disposed at the bottom of the mating block 22 and detachably connected to the second guide post 31.

[0052] The second adjustment component 4 for adjusting the flexion and extension angle includes a second locking member 41 disposed on the upper end face of the mating block 22, a first snap-fit ​​member 42 sleeved around the second locking member 41, and a first mating member 43 threadedly connected to the end of the second locking member 41. The first mating member 43 is rotated in both directions to loosen and lock the first snap-fit ​​member 42.

[0053] The third adjustment component 5 for adjusting the inner and outer rotation angle includes a second snap-fit ​​member 51 fixedly connected to the top of the first snap-fit ​​member 42 and sleeved around the periphery of the first locking member 12, and a second mating member 52 threadedly connected to the end of the first locking member 12. Rotating the second mating member 52 in both directions can loosen and tighten the second snap-fit ​​member 51.

[0054] As attached Figure 2 As shown, the structure in the area away from the viewing angle is a foot pedal, and the annular structure on the top of the foot pedal in the area away from the viewing angle is a fastener 11 (strap). The fixed end of the strap can be fixedly connected to the foot pedal by means of adhesive glue or other methods, and the other end can be detachably connected to the fixed end after wrapping around the foot pedal. This application does not limit the connection method of the ends of the strap, such as Velcro or other connection methods can be used in this application.

[0055] Specifically, the positioning block 21 is provided with a first guide post 211 at the top, and the mating block 22 is provided with a first guide groove 221 at the bottom that mates with the first guide post 211;

[0056] The second guide post 31 is a column located on the top of the positioning block 21 away from the first guide post 211. The center of the second guide post 31 and the center of the first guide post 211 are both located on the axis of the positioning block 21. The first adjusting member 32 is a cylindrical groove that cooperates with the second guide post 31. The central axes of the three first adjusting members 32 are coplanar and evenly distributed on an imaginary circumference with the central axis of the first guide groove 221 as the center. The included angle between the central axes of two adjacent first snap-fit ​​members 42 is 15°.

[0057] In specific implementation, the first adjustment component 3 is engaged by aligning the first guide post 211 and the first guide groove 221, rotating the engagement block 22 with the first guide groove 221 as the center, so that the first snap-fit ​​42 on the engagement block 22 in the required adjustment angle direction is aligned with the second guide post 31, inserting the first guide post 211 into the first guide groove 221, and inserting the second guide post 31 into the target first snap-fit ​​42, thereby completing the adjustment and fixing.

[0058] Specifically, the first locking member 12 is a rotating shaft, and the outer wall of the end of the rotating shaft that is connected to the foot pedal is provided with a first toothed ring 13, and the first locking member 12 is provided with a first threaded section on the side away from the first toothed ring 13.

[0059] Specifically, the top of the mating block 22 is provided with a mounting bracket, and the second locking member 41 is fixedly provided on the mounting bracket. The second locking member 41 is a rotating shaft. The outer wall of the end of the second locking member 41 that is connected to the mounting bracket is provided with a second toothed ring 411, and the side of the second locking member 41 away from the second toothed ring 411 is provided with a second threaded section.

[0060] Specifically, the first snap-fit ​​component 42 is a guide sleeve, and the end of the first snap-fit ​​component 42 near the mounting bracket is provided with a third toothed ring 421 that matches the second toothed ring 411; the outer wall of the end of the first snap-fit ​​component 42 without the third toothed ring 421 is provided with a scale ring, the initial line of the scale ring and the center line of the guide sleeve are located in the same vertical plane, and the scale ring is deployed to both sides with the initial line as the 0 scale line. In order to make the observation more intuitive, the highest point of the locking handle in the locked state is also provided with a reference line aligned with the 0 scale line;

[0061] The first mating part 43 is a locking handle, and the inner cavity of the first mating part 43 is provided with an internal thread that matches the external thread on the second threaded section.

[0062] In practice, when it is necessary to adjust the bending angle, the first mating part 43 is rotated counterclockwise, so that the first mating part 43 gradually moves back towards the first locking part 42 to form an adjustment range. The first locking part 42 is pulled towards the first mating part 43, so that the second gear ring 411 and the third gear ring 421 are separated, thus realizing the rotation of the rotating shaft. After rotating to the preset angle, the first locking part 42 is pushed back, so that the second gear ring 411 and the third gear ring 421 are engaged. The first mating part 43 is tightened clockwise to achieve fixation.

[0063] Specifically, the second snap-fit ​​member 51 is a guide sleeve, the axis of the second snap-fit ​​member 51 is perpendicular to the axis of the first snap-fit ​​member 42, one end of the second snap-fit ​​member 51 that cooperates with the first locking member 12 is provided with a fourth toothed ring 511 that matches the first toothed ring 13, and the outer wall of the end of the second snap-fit ​​member 51 that does not have the fourth toothed ring 511 is provided with a scale ring.

[0064] The second mating part 52 is a locking handle, and the inner cavity of the second mating part 52 is provided with an internal thread that matches the external thread on the first threaded section.

[0065] In practice, when it is necessary to adjust the inner and outer rotation angles, rotate the second mating part 52 counterclockwise so that the second mating part 52 gradually moves back toward the second locking part 51 to form an adjustment range. Pull the second locking part 51 toward the second mating part 52 so that the first gear ring 13 and the second gear ring 411 separate, thereby realizing the rotation of the rotating shaft. After rotating to the preset angle, push back the second locking part 51 so that the first gear ring 13 and the second gear ring 411 mesh. Tighten the second mating part 52 clockwise to achieve fixation.

[0066] This device allows for precise adjustment of the ankle joint's inversion / inversion, rotation / extension, and flexion / extension angles by placing the patient's foot into a footrest and securing it with straps. Releasing the knob allows for precise adjustment of these angles. Therefore, after ankle surgery and the removal of the cast or brace, this device can assist patients in multi-dimensional passive ankle range of motion exercises (inversion / inversion, rotation / extension, flexion / extension) with precise angle control, gradually increasing the angles and intensity of movement to ensure a steady increase in ankle joint mobility within a painless or minimally painful range. Furthermore, this device can also accurately measure the inversion / inversion, rotation / extension, and flexion / extension ranges of the unaffected ankle, ensuring a gradual and progressive recovery process after ankle surgery, ultimately benefiting patients by allowing for a gradual increase in ankle joint mobility within a painless or minimally painful range.

[0067] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An ankle joint biomechanical assessment and rehabilitation device, characterized in that, include: A foot pedal assembly includes a foot pedal, a fixing member disposed on the top of the foot pedal side wall, and a first locking member disposed on the bottom of the foot pedal side wall, wherein the fixing member and the first locking member are respectively located on two opposite sides of the foot pedal; The positioning component includes a positioning block and a mating block detachably connected to the top of the positioning block; The first adjustment component for adjusting the inversion and eversion angles includes a second guide post disposed on the upper end face of the positioning block and at least three first adjustment members disposed on the bottom of the mating block and detachably connected to the second guide post. The second guide post cooperates with different first adjustment members to form different foot eversion angles. The second adjustment component for adjusting the flexion-extension angle includes a second locking member disposed on the upper end face of the mating block, a first snap-fit ​​member sleeved around the second locking member, and a first mating member threaded to the end of the second locking member. Rotating the first mating member in both directions releases and locks the first snap-fit ​​member. The second locking member rotates within the first snap-fit ​​member in the released state to form different foot flexion-extension angles. The third adjustment component for adjusting the inward and outward rotation angle includes a second snap-fit ​​member fixedly connected to the top of the first snap-fit ​​member and sleeved around the periphery of the first locking member, and a second mating member threadedly connected to the end of the first locking member. The second mating member is rotated in both directions to achieve the loosening and locking of the second snap-fit ​​member. The first locking member rotates in the second snap-fit ​​member in the loosened state to form different inward and outward rotation angles of the foot.

2. The ankle mechanics assessment and rehabilitation device according to claim 1, wherein: The fastener is a strap, with one end of the strap fixedly connected to the foot pedal and the other end detachably connected to the fixed end after wrapping around the foot pedal.

3. The ankle mechanics assessment and rehabilitation device of claim 1, wherein: The top of the positioning block is provided with a first guide post, and the bottom of the mating block is provided with a first guide groove that mates with the first guide post; The second guide post is a column located on the top of the positioning block away from the first guide post. The center of the second guide post and the center of the first guide post are both located on the axis of the positioning block. The first adjusting member is a cylindrical groove that cooperates with the second guide post. The central axes of the three first adjusting members are coplanar and evenly distributed on an imaginary circle with the central axis of the first guide groove as the center. The included angle between the central axes of two adjacent first snap-fit ​​members is 15°.

4. The ankle mechanics assessment and rehabilitation device of claim 2, wherein: The first locking component is a rotating shaft. The outer wall of the end of the rotating shaft that is connected to the foot pedal is provided with a first toothed ring, and the side of the first locking component away from the first toothed ring is provided with a first threaded section.

5. The ankle mechanics assessment and rehabilitation device of claim 4, wherein: The top of the mating block is provided with a mounting bracket, and the second locking member is fixedly provided on the mounting bracket. The second locking member is a rotating shaft. The outer wall of the end of the second locking member that is connected to the mounting bracket is provided with a second toothed ring, and the side of the second locking member away from the second toothed ring is provided with a second threaded section.

6. The ankle joint biomechanical assessment and rehabilitation device according to claim 5, characterized in that: The first snap-fit ​​component is a guide sleeve, and the end of the first snap-fit ​​component near the mounting bracket is provided with a third toothed ring that matches the second toothed ring; the outer wall of the end of the first snap-fit ​​component without the third toothed ring is provided with a scale ring. The first mating part is a locking handle, and the inner cavity of the first mating part is provided with an internal thread that matches the external thread on the second threaded section.

7. The ankle mechanics assessment and rehabilitation device according to claim 6, wherein: The second snap-fit ​​component is a guide sleeve. The axis of the second snap-fit ​​component is perpendicular to the axis of the first snap-fit ​​component. The end of the second snap-fit ​​component that cooperates with the first locking component is provided with a fourth toothed ring that matches the first toothed ring. The outer wall of the end of the second snap-fit ​​component that does not have the fourth toothed ring is provided with a scale ring. The second mating part is a locking handle, and the inner cavity of the second mating part is provided with an internal thread that matches the external thread on the first threaded section.

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