Removable insoles for valgus and valgus correction

Abstract

To provide a removable insole for correcting inversion and eversion, which effectively relieves fatigue, prevents the sole of the foot from rolling over during exercise, and improves mobility and stability. [Solution] The removable insole with inversion / eversion switchable corrective function comprises an insole body 1, a magnet matrix 2 and a magnetorheological elastomer 3 provided on the upper surface of the insole body, a shock-absorbing pad and Velcro® provided at the bottom end of the insole body, and a corrective pad removably connected to the bottom end of the insole body via the Velcro. The coordinated action of the magnet matrix layout and the mimicking foot arch structure enables real-time intervention in gait abnormalities, and the real-time combination of magnetic field gradient distribution and foot pressure changes resolves the conflicting biomechanical requirements of a single corrective structure being unable to achieve both inversion (lateral weight bearing) and eversion (medial collapse). The magnet matrix is ​​designed as a sphere, and each corresponds to a different acupressure point on the sole of the human foot.

Description

[Technical Field]

[0001] The present invention relates to the field of acupressure technology, and more particularly to a removable insole with a valgus-switchable correction mechanism. [Background technology]

[0002] In the field of foot health, traditional orthotic insoles have long been the mainstream solution for improving arch support and correcting gait abnormalities. However, their inherent static design principles have significant limitations, making it difficult to meet the dynamic requirements of foot biomechanics. First, traditional insoles cannot adapt to dynamic changes in the degree of foot inversion / eversion in real time. Traditional orthotic structures (e.g., fixed-height arch support pads or rigid cup heels) are based on a pre-set static model and only provide support for a specific degree of arch collapse or calcaneal deviation. However, during actual walking, the degree of foot inversion (pronation) or eversion (supination) continues to fluctuate due to differences in user fatigue, load, road surface unevenness, and exercise intensity. Rigid support structures therefore cannot flexibly adjust the support force or angle, resulting in insufficient support or excessive correction at critical stages of the gait cycle, which not only reduces comfort but also weakens the stability and reliability of the corrective effect.

[0003] Second, static physical orthotic designs are prone to compensatory muscle damage. Conventional insoles use hard materials to forcibly "fix" the foot in a theoretically neutral position, essentially eliminating the dynamic stabilization function of the foot muscles during the gait cycle. Long-term use of such insoles results in gradual disuse weakness of key muscles, such as the plantar fascia and posterior tibialis, due to prolonged mechanical unloading. Muscles in the lower leg, knee joint, and hip joint are forced to exert compensatory force to maintain balance. This compensatory mechanism of the muscular system disrupts the coordination of the lower limb power chain, cumulatively increasing the risk of sports injuries such as ankle sprains, tibial stress syndrome, knee pain, and lower back pain, clearly countering the original purpose of "orthotics."

[0004] Furthermore, conventional methods using fixed-layout magnets disrupt the natural gait chain. Some functional insoles incorporate permanent magnets for the purposes of promoting blood circulation and pain relief, but the magnets are typically fixed at specific points in the heel or arch of the foot based on empirical criteria. Human gait is a precise biomechanical chain (i.e., the gait chain) involving the linkages of the foot, ankle, knee, hip, and spine, and any rigid interference with any link can disrupt the overall coordination. The rigid base and magnetic field application point of a fixed magnet inhibit the elastic deformation of the arch of the foot during gait progression, restricting the flexion freedom of the plantar toe joints and forcibly changing the plantar pressure distribution pattern. This non-physiological interference not only reduces gait efficiency and increases energy consumption, but also transmits abnormal stress upward through the gait chain, potentially causing adaptive damage to distal joints.

[0005] As described above, conventional insole technology is limited to three core defects: static correction structure, muscle function inhibition, and gait chain interference. Therefore, there is an urgent need for a removable insoles that can be switched between valgus and valgus. Summary of the Invention [Problem to be solved by the invention]

[0006] In response to the above-mentioned shortcomings of the prior art, the present invention provides a removable insoles with a valgus-valgus changeable corrective insole, which effectively solves the problems that the static rigid design of the prior art insoles makes it unable to adapt to the insoles' inversion and eversion changes, leading to compensatory muscle damage, and the fixed magnet layout interferes with the biomechanical conduction of natural walking. [Means for solving the problem]

[0007] To achieve the above objectives, the present invention is realized by the following technical solutions:

[0008] The present invention provides a removable insole with a valgus / valgus switchable corrective mechanism, which comprises an insole body, a magnet matrix and a magnetorheological elastomer on the upper surface of the insole body, a shock-absorbing pad and a Velcro® fastener at the bottom end of the insole body, and a corrective pad that is removably connected to the bottom end of the insole body by the Velcro® fastener.

[0009] Furthermore, the magnet matrix is ​​equipped with interchangeable north / south pole magnets (diameter 6-10 mm, surface magnetic induction strength 50-200 mT), and dynamically adjusts the magnet density ratio on the outside (varus correction area) and inside (valgus correction area) based on foot pressure sensor data.

[0010] Furthermore, the insole body adopts a composite structure of shape memory alloy and magnetostrictive material to form an imitation dynamic arch, which realizes adaptive changes in arch curvature during the walking cycle.

[0011] Furthermore, the magnetorheological elastomer provided on the upper surface of the insole body adjusts its rigidity in response to changes in magnetic field strength.

[0012] Furthermore, the magnet matrix suppresses abnormal inversion moments of the foot through the Lorentz force. [Effects of the Invention]

[0013] Compared with the known prior art, the technical solution of the present invention has the following beneficial effects: The present invention comprises an insole body and a plurality of magnetic matrices attached to the upper surface of the insole body. The magnetic matrices are spherical and correspond to different acupressure points on the sole of the human foot. The insole body is provided with a plurality of magnetorheological elastomers for supporting the sole of the foot. The magnetic matrices and magnetorheological elastomers can massage the foot, have a health-promoting effect, effectively relieve fatigue, and prevent the sole of the foot from tipping over during exercise, thereby improving mobility and stability. [Brief explanation of the drawings]

[0014] In order to more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used to explain the embodiments or the prior art. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can further obtain other drawings based on these drawings without creative work. [Figure 1] 1 is a front view of the insole body according to the present invention; [Figure 2] 1 is a schematic diagram of the bottom structure of the insole body according to the present invention. [Figure 3] 1 is a structural diagram of the corrective pad according to the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0015] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention, and of course, the described embodiments are only some of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, any other embodiments that can be obtained by those skilled in the art without any creative effort will fall within the scope of protection of the present invention.

[0016] The present invention will be further explained below in conjunction with examples.

[0017] Working Example: Referring to Figures 1-3, the present invention provides a technical solution for a removable insoles for valgus and valgus correction, Referring to Figure 1, the device comprises an insole body 1, on the upper surface of which a magnet matrix 2 and a magnetorheological elastomer 3 are provided. The insole body 1 is made of a composite structure of a shape memory alloy and a magnetostrictive material, which mimics a dynamic foot arch and enables adaptive changes in the foot arch curvature throughout the walking cycle. The magnetorheological elastomer 3 provided on the upper surface of the insole body 1 has its rigidity adjusted according to changes in magnetic field strength. The magnet matrix 2 comprises a magnet with interchangeable N / S poles, with a diameter of 6-10 mm and a surface magnetic induction strength of 50-200 mT. The magnet density ratio between the outer inversion correction area and the inner eversion correction area is dynamically adjusted based on foot pressure sensor data. The magnet matrix 2 suppresses the abnormal foot inversion moment using Lorentz force.

[0018] Referring to FIG. 2, a shock absorbing pad 4 and a Velcro tape (registered trademark) 6 are provided at the bottom end of an insole body 1.

[0019] 2 and 3, a correction pad 5 is removably connected to the bottom end of the insole body 1 by a Velcro tape (registered trademark) 6.

[0020] The magnet embedding process of the magnet matrix 2 involves embedding neodymium magnets, which have been treated with nickel plating for corrosion protection, into the TPU substrate using ultrasonic welding technology, with a magnet spacing error of ≤0.2mm.

[0021] The pressure distribution on the sole is detected through a flexible piezoelectric sensor PVDF film, and after MCU calculation, the gradient switching of the electromagnetic matrix is ​​controlled.

[0022] The present invention comprises an insole body 1 and a plurality of magnet matrices 2 attached to the upper surface of the insole body 1. The magnets in the magnet matrix 2 are spherical and correspond to different acupressure points on the sole of the human foot. The insole body 1 is further provided with a plurality of magnetorheological elastomers 3 for supporting the sole of the foot. The magnet matrix 2 and the magnetorheological elastomers 3 can massage the foot, have a health-promoting effect, effectively relieve fatigue, and prevent the sole of the foot from tipping over during exercise, thereby improving mobility and stability.

[0023] The coordinated action of the magnet matrix 2 layout and the mimetic foot arch structure enables real-time intervention in gait abnormalities, and the real-time combination of magnetic field gradient distribution and foot pressure changes resolves the contradictory biomechanical requirements that a single corrective structure cannot achieve both lateral weight bearing (varus) and medial collapse (valgus).

[0024] The above embodiments are not limiting but are merely intended to illustrate the technical means of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art may still modify the technical means described in the above embodiments or substitute some of the technical features therein with equivalents, and these modifications or substitutions will not deviate from the essence of the corresponding technical means and the spirit and scope of the technical means of each embodiment of the present invention. [Explanation of symbols]

[0025] 1, insole body, 2, magnet matrix, 3, magnetorheological elastomer, 4, shock absorbing pad, 5, orthotic pad, 6, Velcro (registered trademark)

Claims

1. A removable insole with a reversible inversion / eversion configuration, comprising an insole body (1), a magnet matrix (2) and a magnetorheological elastomer (3) provided on the upper surface of the insole body (1), a shock-absorbing pad (4) and a Velcro® (registered trademark) (6) provided at the bottom end of the insole body (1), and a corrective pad (5) removably connected to the bottom end of the insole body (1) by the Velcro® (registered trademark) (6).

2. The removable insole with a switchable inversion-eversion correction mechanism according to claim 1, characterized in that the magnet matrix (2) is provided with magnets (diameter 6-10 mm, surface magnetic induction strength 50-200 mT) with interchangeable north / south poles, and the magnet density ratio between the outer side (varus correction region) and the inner side (valgus correction region) is dynamically adjusted based on foot pressure sensor data.

3. The removable insole with valgus and valgus changeover corrective properties described in claim 1, characterized in that the insole body (1) adopts a composite structure of shape memory alloy and magnetostrictive material to form an imitative dynamic arch and realize adaptive changes in the arch curvature during the walking cycle.

4. The removable insole according to claim 1, characterized in that the rigidity of the magnetorheological elastomer (3) provided on the upper surface of the insole body (1) is adjusted according to the change in magnetic field strength.

5. The removable insole according to claim 1, characterized in that the magnet matrix (2) suppresses abnormal inversion moment of the foot by Lorentz force.

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