Preventive orthopedic insole

Abstract

The application discloses a preventive type orthopedic insole and relates to the technical field of rehabilitation engineering. The insole body is sequentially divided into a forefoot region, an arch support region and a heel stabilizing region along the length direction of the insole body; the insole body comprises a comfort layer and a dynamic support layer arranged from top to bottom; the comfort layer is made of degradable EVA material; the dynamic support layer is compounded below the comfort layer and is made of shape memory EVA base material; the dynamic support layer of the arch support region presents a preset arch-shaped protruding structure on a longitudinal section; the dynamic support layer of the heel stabilizing region presents a side wall reinforcing structure surrounding the heel on a transverse section, and the insole realizes dynamic self-adaptive support, efficient correction, comfortable ventilation, environmental protection and degradability, and is especially suitable for preventing and improving the arch collapse problem of college students.

Description

Technical Field

[0001] This utility model relates to the field of rehabilitation engineering technology, specifically to a preventive orthotic insole. Background Technology

[0002] The problem of collapsed arches is becoming increasingly common among college students due to prolonged standing and walking, as well as inappropriate footwear choices. Existing orthotic insoles are mostly designed for severely affected patients and professional athletes, and suffer from problems such as excessive rigidity, poor comfort, non-biodegradability, lack of dynamic adaptability, and unattractive appearance, making it difficult to meet the comprehensive needs of college students for comfort, portability, aesthetics, and environmental friendliness.

[0003] Traditional static support insoles cannot adjust the support firmness in real time according to the movement status, which may lead to insufficient support or overcorrection, affecting the use effect and user experience. Therefore, there is an urgent need for a targeted orthotic insole that can dynamically adapt to changes in foot biomechanics in order to effectively prevent and improve foot health problems in the population. Utility Model Content

[0004] The purpose of this invention is to overcome the problems in the prior art and provide a preventive orthotic insole.

[0005] This invention provides a preventive orthotic insole, the insole body being divided along its length into a forefoot area, an arch support area, and a heel stability area; the insole body includes a comfort layer and a dynamic support layer arranged from top to bottom; the comfort layer is made of biodegradable EVA material; the dynamic support layer is composited below the comfort layer and is made of shape memory EVA substrate; the dynamic support layer of the arch support area presents a pre-set arch-shaped raised structure in longitudinal section; the dynamic support layer of the heel stability area presents a sidewall reinforcement structure surrounding the heel in transverse section.

[0006] Preferably, the surface of the comfort layer (2) is covered with an antibacterial and deodorizing coating.

[0007] Preferably, the dynamic support layer is integrally formed using a prefabricated injection molding process.

[0008] Preferably, a pressure-sensitive or temperature-sensitive gel layer is provided between the comfort layer and the dynamic support layer.

[0009] Preferably, the arch-shaped ridge structure of the arch support area has the greatest thickness within the arch support area and gradually decreases in thickness towards the forefoot and heel stabilization areas.

[0010] Preferably, the height of the sidewall reinforcement structure in the heel stabilization zone is greater than its height in the forefoot zone.

[0011] Compared with the prior art, the beneficial effects of this utility model are: By dividing the insole into a forefoot area, an arch support area, and a heel stability area, and adopting a dual-layer composite structure of a comfort layer and a dynamic support layer, precise and dynamic correction and comfortable support for the foot characteristics of college students are achieved. The dynamic adaptive support, composed of a shape-memory EVA dynamic support layer, can adjust the local hardness in real time within milliseconds according to foot pressure. It can provide moderate cushioning when static and rapidly enhance support during dynamic movement, effectively avoiding the problems of insufficient support or overcorrection in traditional static insoles. The arch-shaped bulge structure based on the common data of arch collapse among college students provides precise physiological support for the arch, which helps prevent and improve arch collapse. At the same time, the side wall reinforcement structure in the heel area enhances the wrapping and stability of the heel and corrects poor gait. The upper biodegradable EVA comfort layer combines a soft touch with environmental protection. Overall, this solution effectively solves the technical problems of existing products, such as excessive rigidity, poor comfort, non-biodegradability, and lack of dynamic adaptability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the top surface structure of the insole body of this utility model.

[0013] Figure 2 This is a schematic diagram of the bottom structure of the insole body of this utility model.

[0014] Figure 3 This is the right view of the present invention.

[0015] Figure 4 This is the left view of the present invention.

[0016] Explanation of reference numerals in the attached diagram: 1. Insole body; 101. Forefoot area; 102. Arch support area; 103. Heel stability area; 2. Comfort layer; 3. Dynamic support layer. Detailed Implementation

[0017] The following is in conjunction with the appendix Figures 1-4 To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art to which this utility model pertains.

[0018] The terms "first," "second," and similar words used in this utility model patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "inner," "outer," "upper," "lower," "far," "near," "front," and "rear" are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. The drawings in this utility model are not strictly drawn to scale; the specific dimensions and quantity of each structure can be determined according to actual needs. The drawings described in this utility model are only structural schematic diagrams.

[0019] This utility model provides a preventive orthotic insole, such as Figures 1-4 As shown, the insole body 1 is divided into a forefoot area 101, an arch support area 102, and a heel stability area 103 along its length. The insole body 1 includes a comfort layer 2 and a dynamic support layer 3 arranged from top to bottom. The comfort layer 2 is made of biodegradable EVA material. The dynamic support layer 3 is composited below the comfort layer 2 and is made of shape memory EVA substrate. The dynamic support layer 3 of the arch support area 102 presents a preset arch-shaped raised structure in the longitudinal section. The dynamic support layer 3 of the heel stability area 103 presents a sidewall reinforcement structure surrounding the heel in the transverse section.

[0020] In this embodiment, by dividing the insole into a forefoot area 101, an arch support area 102, and a heel stability area 103, and employing a double-layer composite structure of a comfort layer 2 and a dynamic support layer 3, precise and dynamic correction and comfortable support tailored to the foot characteristics of college students are achieved. The dynamic adaptive support, achieved through the shape memory EVA-made dynamic support layer 3, can adjust local hardness in real time within milliseconds based on foot pressure. This provides moderate cushioning in static conditions and rapidly enhances support during dynamic movement, effectively avoiding the problems of insufficient support or overcorrection inherent in traditional static insoles. The arch-shaped bulge structure, modeled based on common data on arch collapse among college students, provides precise physiological support for the arch, helping to prevent and improve arch collapse. Simultaneously, the reinforced sidewall structure in the heel area enhances the heel's wrapping and stability, correcting poor gait. The upper biodegradable EVA comfort layer 2 combines a soft touch with environmental friendliness. Overall, this solution effectively solves the technical problems of existing products being overly rigid, lacking comfort, non-biodegradable, and lacking dynamic adaptability.

[0021] Preferred, such as Figures 1-2 As shown, the surface of comfort layer 2 is covered with an antibacterial and deodorizing coating.

[0022] In this embodiment, the biodegradable EVA is produced using a supercritical foaming process and coated with an antibacterial layer, significantly enhancing the overall performance of the comfort layer 2. The supercritical foaming process creates a microporous structure with finer and more uniform pore sizes, making the material lighter and more elastic, improving comfort during extended wear, and enhancing its biodegradability, thus meeting environmental protection requirements. The surface antibacterial and deodorizing coating effectively inhibits bacterial growth, solving odor and hygiene problems caused by foot sweat, making it particularly suitable for the daily extended wear needs of university students. The effectiveness of this technology lies in the organic combination of environmentally friendly materials, ultimate comfort, and hygiene, improving the product's user experience and market competitiveness.

[0023] Preferred, such as Figures 1-2 As shown, the dynamic support layer 3 is integrally formed using a prefabricated injection molding process.

[0024] In this embodiment, the integrity of the product structure and the stability of its performance are ensured. The one-piece molding process can uniformly and firmly bond the shape memory EVA substrate with the pressure-sensitive fluid material, avoiding delamination or uneven local performance, and ensuring consistent and reliable dynamic response. The one-piece molded structure is seamless, has high strength, and good durability, and can withstand long-term repeated deformation and pressure, extending the product's service life.

[0025] Preferred, such as Figures 3-4 As shown, a pressure-sensitive and temperature-sensitive gel layer is also provided between the comfort layer 2 and the dynamic support layer 3.

[0026] In this embodiment, by adding a pressure-sensitive or temperature-sensitive gel layer between the comfort layer 2 and the dynamic support layer 3, the intelligent cushioning and functional dimensions of the insole are increased. As a second dynamic response system, the pressure-sensitive gel can further disperse the pressure on the sole of the foot, while the temperature-sensitive gel can adjust its softness and hardness according to changes in foot temperature, achieving a more delicate touch and cushioning. This structure enhances the gradual attenuation of impact force, improves overall comfort, and can provide adaptive microenvironment adjustment according to the environment or user condition. The temperature-sensitive gel layer is typically used in traditional Chinese medicine temperature-sensitive gel plasters or injectable temperature-sensitive gels; the pressure-sensitive gel layer is typically used in piezoelectric material-based gels.

[0027] Preferred, such as Figures 3-4 As shown, the arch-shaped ridge structure of the arch support area 102 has the greatest thickness within the arch support area 102, and gradually extends towards the forefoot area 101 and the heel stability area 103.

[0028] In this embodiment, a smooth transition of support force is achieved, which is ergonomic. The arch-shaped bulge structure is thickest in the support area and gradually thins towards the front and back. This gradual design makes the support force obtained by the arch of the foot continuous and natural, avoiding an abrupt step feeling and preventing the creation of new pressure points or discomfort on the sole of the foot. It ensures a smoother rolling process of the foot from the forefoot to the heel during the gait cycle, improving movement efficiency, and also enhancing the comfort and acceptability of the orthopedic process. It is a key structural guarantee for scientific correction and comfortable experience.

[0029] Preferred, such as Figures 3-4 As shown, the height of the sidewall reinforcement structure in the heel stability zone 103 is greater than its height in the forefoot zone 101.

[0030] This embodiment provides segmented stability control. The heel, as the primary point of contact and weight-bearing in gait, requires stronger containment and locking to prevent inversion and supination; while the forefoot needs greater flexibility during push-off. This design precisely provides the highest lateral wall in the heel area where stability is most needed, achieving the optimal state of "firmly locked heel and flexible forefoot movement." This effectively guides the heel to land in a neutral position, improving gait biomechanics, thereby fundamentally enhancing the corrective effect and improving walking stability and safety.

[0031] The method of using this preventive orthotic insole is as follows: Users simply need to place this orthotic insole into their everyday shoes, ensuring the arch support structure aligns with their own arch and the heel stability zone 103 completely covers the heel, and then they can begin walking normally. For first-time users, it is recommended to wear it for 2-3 hours daily to allow the foot to gradually adapt to the support provided by the insole. After a week, it can be extended to full-day use. During daily walking and standing, the dynamic support layer 3 of the insole automatically adjusts its firmness according to pressure changes, providing continuous and comfortable support.

[0032] The insole's intelligent responsiveness is particularly noticeable during high-intensity activities such as running and physical education classes. When the foot experiences a rapid, strong impact, the pressure-sensitive fluid in the dynamic support layer 3 instantly thickens and hardens, providing stronger support and cushioning to protect the arch from excessive impact; when walking calmly again, the support layer returns to a relatively soft state. This automatic adaptation ensures stability and safety during exercise.

[0033] To maintain optimal performance, it is recommended to check the insoles regularly. When cleaning, wipe the surface with a damp cloth and let them air dry naturally in a cool, ventilated place, avoiding direct sunlight or baking. Because insoles are designed with specific functional orientation, shoes of the appropriate size should be chosen to avoid excessive compression. If used for rehabilitation purposes, it is recommended to use them under the guidance of a professional and, based on your own feelings and needs, achieve the best preventive and improvement effects through long-term consistent use.

[0034] 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 preventative orthotic insole, characterized in that, The insole body (1) is divided into the forefoot area (101), the arch support area (102), and the heel stability area (103) along its length. The insole body (1) includes a comfort layer (2) and a dynamic support layer (3) arranged from top to bottom; The comfort layer (2) is made of biodegradable EVA material; The dynamic support layer (3) is composited below the comfort layer (2) and is made of shape memory EVA substrate; The dynamic support layer (3) of the arch support area (102) presents a preset arch-shaped bulge structure in the longitudinal section, and the dynamic support layer (3) of the heel stability area (103) presents a side wall reinforcement structure surrounding the heel in the transverse section.

2. The preventive orthotic insole as described in claim 1, characterized in that, The surface of the comfort layer (2) is covered with an antibacterial and deodorizing coating.

3. The preventive orthotic insole as described in claim 1, characterized in that, The dynamic support layer (3) is integrally formed using a prefabricated injection molding process.

4. The preventive orthotic insole as described in claim 1, characterized in that, A pressure-sensitive or temperature-sensitive gel layer is also provided between the comfort layer (2) and the dynamic support layer (3).

5. A preventative orthotic insole as described in claim 1, characterized in that, The arch-shaped ridge structure of the arch support area (102) has the greatest thickness within the arch support area (102) and gradually decreases towards the forefoot area (101) and the heel stabilization area (103).

6. A preventative orthotic insole as described in claim 1, characterized in that, The height of the sidewall reinforcement structure in the heel stabilization zone (103) is greater than its height in the forefoot zone (101).

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