A phantom for evaluating the function of additively manufactured orthopedic insoles and its automatic construction method

Abstract

The present invention provides a phantom for evaluating the function of additively manufactured orthopedic insoles and an automatic construction method thereof, the method comprising the following steps: obtaining the shape design parameters of the orthopedic insole based on the design model of the orthopedic insole; determining the most matching phantom component modules to be selected according to the shape design parameters; fixing the selected support component and the correction component on the selected base to assemble into an insole forming base; placing the selected insole forming part on the insole forming base, and making the insole forming part close to the upper surface of the insole forming base by hot pressing to replicate its shape; demolding and removing the hot pressed insole forming part to serve as a test insole. The present invention allows the replacement of modules with different adaptations through modular design to repeatedly modify and optimize the shape of the test insole, thereby simplifying the testing process of personalized orthopedic insoles and saving time and material costs.

Description

Technical Field

[0001] The invention relates to the technical field of orthopedic insoles, and in particular to a phantom for evaluating the function of an additively manufactured orthopedic insole and an automatic construction method thereof. Background Art

[0002] Additive manufacturing of personalized orthopedic insoles is an effective treatment for improving foot problems. Personalized orthopedic insoles are custom insoles designed for correction based on individual foot shape and foot problems. Personalized orthopedic insoles can improve plantar pressure distribution, relieve foot pain, correct foot problems and lower limb biomechanics, and help restore normal gait by reducing pressure and adding correction components.

[0003] The production process of orthopedic insoles usually includes key steps such as prototyping, design, manufacturing, evaluation and modification. Among them, the test and evaluation of the wearing effect is a crucial link, which helps to directly feedback the wearing experience and the improvement of foot diseases, and predict the final correction effect. In the evaluation and assessment stage, the existing methods of personalized additive manufacturing orthopedic insole adaptation are usually based on designed and manufactured insoles. Due to the unchangeable nature of additive manufacturing, if the evaluation results do not meet the correction requirements, it is necessary to return to the design steps, redesign, manufacture, and evaluate again, which will increase time and material costs; especially when the shape of the orthopedic insole or the thickness of the local area needs to be modified multiple times during the evaluation and assessment stage, these problems are even worse. Summary of the invention

[0004] In view of this, an embodiment of the present invention provides a phantom for evaluating the function of an additively manufactured orthopedic insole and an automatic construction method thereof, so as to eliminate or improve one or more defects existing in the prior art.

[0005] In one aspect, the present invention provides a method for automatically constructing a phantom for evaluating the function of an additively manufactured orthopedic insole, the method comprising the following steps:

[0006] Based on the design model of the orthopedic insole, obtaining shape design parameters of the orthopedic insole;

[0007] According to the shape design parameters, the most matching phantom components to be selected are determined; wherein the phantom comprises: an insole forming part, a base, a support component and a correction component; the support component comprises at least one module of a forefoot area support, a medial arch area support, a lateral arch area support and a heel area support; the correction component comprises at least one module of a metatarsal pad, a transverse arch pad, a round pad and an elliptical pad;

[0008] The selected support component and the corrective component are fixedly mounted on the selected base to assemble into an insole forming base, wherein the upper surface of the insole forming base is formed with a surface shape for simulating a design model of the orthopedic insole;

[0009] Placing the selected insole forming piece on the insole forming base, and pressing the insole forming piece to make it close to the upper surface of the insole forming base by hot pressing to replicate its shape;

[0010] The insole molded part after hot pressing is demoulded and taken out to serve as a test insole, and the test insole is used to test and evaluate the function of the orthopedic insole.

[0011] In some embodiments, the step of obtaining the shape design parameters of the orthopedic insole based on the design model of the orthopedic insole comprises:

[0012] Bases, support components and correction components of different sizes and thicknesses are numbered and expressed in shape parameters to form a module library;

[0013] Extracting the contours and thicknesses of the forefoot region, the medial arch region, the lateral arch region and the heel region of the design model of the orthopedic insole, as well as the bottom contour of the entire design model of the orthopedic insole;

[0014] Using the point cloud-based ICP registration method, by comparing the underlying contour of the design model of the orthopedic insole with the matching of the base module library, the best matching base module is selected;

[0015] Based on the extracted contours and thicknesses of the forefoot region, medial arch region, lateral arch region and heel region of the design model of the orthopedic insole, the feature points of each region are determined; the modules of the support component are roughly matched using a partial point cloud registration method based on feature points to obtain a preliminary registration result; then, a point cloud-based ICP registration method is used for fine matching, and the best matching forefoot region support, medial arch region support, lateral arch region support and heel region support are selected from the preliminary registration results;

[0016] Based on the extracted contours and thicknesses of the forefoot area, medial arch area, lateral arch area and heel area of ​​the design model of the orthopedic insole, the target area is detected based on point cloud data using PointNet++ and VoxelNet algorithms, or the target area is detected using the CorrNet3D unsupervised learning algorithm, and the best matching correction component is selected from the module library.

[0017] In some embodiments, the contour and thickness of the metatarsal support region are determined based on the extracted contour and thickness of the forefoot region, and the best matching metatarsal pad is selected from a module library;

[0018] The contour and thickness of the transverse arch support area are determined based on the extracted contours and thicknesses of the medial arch area and the lateral arch area, and the most matching transverse arch pad is selected from the module library.

[0019] In some embodiments, after the first test insole is prepared, the first test insole is tested using a test device to obtain a test result;

[0020] Based on the test result of the first test insole, at least one module of the insole forming part, the base, the support component and the correction component is replaced, and a second test insole is obtained after replacing the new insole forming part;

[0021] Repeat the above steps until the target test insole is obtained.

[0022] On the other hand, the present invention provides a phantom for evaluating the function of additively manufactured orthopedic insoles, the phantom comprising: an insole forming part, a base, a support component and a correction component, the support component being used to be mounted on the upper surface of the base, the correction component being used to be mounted on the upper surface of the base and / or the support component;

[0023] Wherein, the support assembly includes at least one module of a forefoot region support, a medial arch region support, a lateral arch region support and a heel region support;

[0024] The correction component includes at least one module of a metatarsal pad, a transverse arch pad, a circular pad, and an oval pad;

[0025] In the prepared state of the phantom, the support component and the correction component are fixedly mounted on the base to be assembled into an insole forming base, and the upper surface of the insole forming base is formed with a surface shape for simulating a design model of an orthopedic insole; the insole forming piece can be placed on the insole forming base, and the insole forming piece can be pressed against the upper surface of the insole forming base by hot pressing to replicate its shape;

[0026] The insole molding is used as a test insole after demoulding, and the test insole is used to test and evaluate the function of the orthopedic insole.

[0027] In some embodiments, the insole forming component, base, support component and correction component all include more than two replaceable modules with different specifications.

[0028] In some embodiments, the insole molding is made of low-temperature thermoplastic board or EVA foam material.

[0029] In some embodiments, the phantom further comprises a pressurizing mechanism, which is a rolling mechanism; and one of the pressurizing mechanism and the substrate comprises at least a heating element.

[0030] In some embodiments, the base has a built-in heating element for heating the insole forming element to a set temperature.

[0031] In some embodiments, the base, support component and correction component are connected by magnetism, adhesion or snap-on connection.

[0032] The present invention provides a phantom for evaluating the function of additively manufactured orthopedic insoles and an automatic construction method thereof. By using adaptive reusable modules, modules of different specifications can be replaced, and the shape of the test insoles can be repeatedly modified and optimized, thereby simplifying the testing process of personalized orthopedic insoles and saving time and material costs.

[0033] Additional advantages, purposes, and features of the present invention will be described in part in the following description, and will become apparent to those skilled in the art after studying the following, or may be learned from the practice of the present invention. The purposes and other advantages of the present invention may be achieved and obtained by the structures specifically indicated in the specification and the accompanying drawings.

[0034] Those skilled in the art will appreciate that the objectives and advantages that can be achieved with the present invention are not limited to the above specific description, and the above and other objectives that can be achieved by the present invention will be more clearly understood from the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of this application, and do not constitute a limitation of the present invention. The components in the drawings are not drawn to scale, but are only for illustrating the principles of the present invention. In order to facilitate the illustration and description of some parts of the present invention, the corresponding parts in the drawings may be enlarged, that is, they may become larger relative to other components in the exemplary device actually manufactured according to the present invention. In the drawings:

[0036] Figure 1 It is a schematic diagram of the structure of a phantom for evaluating the function of additively manufactured orthopedic insoles in one embodiment of the present invention.

[0037] Figure 2 It is a schematic structural diagram of a phantom for evaluating the function of additively manufactured orthopedic insoles in another embodiment of the present invention.

[0038] Figure 3 FIG. 4 is a schematic structural diagram of a substrate in an embodiment of the present invention.

[0039] Figure 4This is a flowchart of a method for automatically constructing a phantom for evaluating the function of an additively manufactured orthopedic insole in one embodiment of the present invention.

[0040] Figure 5 It is a flowchart of determining the components of a phantom in one embodiment of the present invention.

[0041] Figure 6 The figure is a flow chart of an algorithm for determining each module in one embodiment of the present invention.

[0042] Reference numerals:

[0043] 1. Base; 11. Heating element; 12. Magnetic element; 2. Support assembly; 21. Forefoot area support element; 22. Medial arch area support element; 23. Lateral arch area support element; 24. Heel area support element;

[0044] 3. Correction component; 31. Metatarsal pad;

[0045] 4. Insole moldings. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0047] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solutions according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0048] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, elements, steps or components, but does not exclude the presence or addition of one or more other features, elements, steps or components.

[0049] It should also be noted that, unless otherwise specified, the term “connection” herein may refer not only to a direct connection but also to an indirect connection involving an intermediate.

[0050] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the accompanying drawings, the same reference numerals represent the same or similar components, or the same or similar steps.

[0051] The present invention provides a phantom for evaluating the function of additively manufactured orthopedic insoles and an automatic construction method thereof, aiming to solve the high cost and low efficiency problems caused by traditional additive manufacturing methods (such as 3D printing) in the insole testing and evaluation process. The phantom and its automatic construction method use adaptive reusable modules to allow the replacement of modules of different specifications to repeatedly modify and optimize the shape of the test insole (or test insole), thereby simplifying the testing process of additively manufactured personalized orthopedic insoles and saving time and material costs.

[0052] It should be noted that the test insole provided in the embodiment of the present invention is mainly used to test and improve the shape parameters of the insole, and is not the final additively manufactured personalized orthopedic insole product. It is generally not directly applied to patients as a common insole or orthopedic insole.

[0053] In a first aspect, the present invention provides a phantom for evaluating the function of an additively manufactured orthopedic insole, such as Figure 1-Figure 2 As shown, the phantom device includes: an insole forming part 4, a base 1, a support component 2 and a correction component 3. In the preparation state of the phantom, the support component 2 and the correction component 3 are fixedly mounted on the base 1 to assemble into an insole forming base, and the upper surface of the insole forming base is formed with a surface shape for simulating the design model of the orthopedic insole; the insole forming part 4 can be placed on the insole forming base, and the insole forming part 4 can be pressed against the upper surface of the insole forming base by hot pressing to replicate its shape. The insole forming part 4 is used as a test insole after demolding, and the test insole is used to test and evaluate the function of the orthopedic insole.

[0054] In the embodiment of the present invention, the base 1 is a basic support structure and can be located at the bottom layer to carry other module components. The upper surface of the base 1 is the base surface for assembling other support and correction component modules, and some connection structures can be designed.

[0055] In an embodiment of the present invention, the support assembly 2 is installed on the upper surface of the base 1, and is responsible for simulating the support of different areas of the foot corresponding to the insole to meet the requirements of human anatomy and biomechanics. The support assembly 2 includes at least one module of a forefoot area support 21, a medial arch area support 22, a lateral arch area support 23, and a heel area support 24. Among them, the shape of the forefoot area support 21 is similar to the anatomical forefoot part, and the area corresponding to this part of the test insole is used to support the forefoot and help reduce the pressure on the forefoot. The shape of the medial arch area support 22 is similar to the anatomical medial arch part, and the area corresponding to this part of the test insole can provide support for the medial arch to help correct an arch that is excessively inverted or inwardly bent. The shape of the lateral arch area support 23 is similar to the anatomical lateral arch part, and the area corresponding to this part of the test insole can provide support for the lateral arch to correct an arch that is excessively everted. The shape of the heel area support 24 is similar to the anatomical heel area, and the area corresponding to this part of the test insole is used to support the heel, improve gait and reduce the pressure on the heel. According to actual needs, these support parts can be combined according to different individual needs, or a single support module can be used to test the support effect of a specific area.

[0056] In the above embodiment, the correction component 3 is installed on the upper surface of the base 1 and / or the support component 2, which can provide additional correction support to help improve specific problems of the foot. The correction component 3 includes at least one module of a metatarsal pad 31, a transverse arch pad, a circular pad and an elliptical pad. Among them, the metatarsal pad 31 can help adjust the support of the metatarsals and reduce the pressure on the sole of the foot. The transverse arch pad can correct the transverse arch area of ​​the sole of the foot to improve gait and foot stability. The circular pad can provide local support to a specific part of the foot, especially when used for correction in a more limited area. The elliptical pad can provide local support to a specific part of the foot, especially where a larger surface area support is required.

[0057] In the above embodiment, the upper surface of the insole molding base is used to assemble and form the surface shape of the test insole; the insole molding base can be used as a base or shape molding mold for pressing the test insole, and can cooperate with a pressurizing mechanism to replicate the surface shape to the test insole. The function of the pressurizing mechanism is to transfer the surface shape of the insole molding base to the insole material by applying uniform or directional pressure, thereby generating a test insole with design requirements. The main purpose of the insole molding base is to reproduce the surface shape of the personalized orthopedic insole through a modular assembly method, and cooperate with the pressurizing mechanism to replicate the shape onto the insole molding part 4. The surface shape of the insole formed by the upper surface of the insole molding base can be adjusted and optimized during the actual test process, providing a flexible and repeatable testing and evaluation process.

[0058] The phantom for evaluating the function of additively manufactured orthopedic insoles in the embodiments of the present invention provides an innovative solution. By quickly and repeatedly adjusting and testing the design of the orthopedic insoles in a modular manner, test insoles that meet the design requirements can be obtained. This can not only effectively improve the efficiency of design and testing, but also reduce unnecessary time and material costs, providing great convenience for the optimization and customization of personalized orthopedic insoles.

[0059] Compared with traditional additive manufacturing methods (such as 3D printing), which usually require the entire test insole to be manufactured from scratch and each modification requires remanufacturing, the modular design of the phantom in the embodiment of the present invention greatly shortens the test cycle and avoids the waste of repeated manufacturing. The design can be quickly tested and improved by simply replacing or adjusting different modules.

[0060] Given that personalized orthopedic insoles usually need to be designed and adjusted according to the specific foot conditions of the patient or user. The phantom in the embodiment of the present invention can be quickly tested and adjusted multiple times to help orthotists optimize the insole design and find the most suitable solution. The modular design of the phantom in the embodiment of the present invention can also allow the modules of different support and correction components to be adjusted individually, and can adapt to different types of foot problems, thereby more accurately meeting the needs of different patients. By replacing different modules, the orthotist can quickly modify the design of the insole, perform different correction effect tests, and improve the iteration efficiency of the design.

[0061] The modules of the phantom in the embodiment of the present invention do not rely on a specific production process or material. Appropriate production methods (such as additive manufacturing, traditional mold making, etc.) can be selected according to actual needs to manufacture the modules.

[0062] Achilles tendon problems (such as Achilles tendinitis and Achilles pain) or heel pain are usually related to excessive internal rotation, external rotation or uneven pressure distribution of the foot. By reducing or increasing the thickness of the heel area support member 24 of the support assembly 2 in the embodiment of the present invention, the pressure on the Achilles tendon and heel can be reduced by providing appropriate support and cushioning.

[0063] Inversion (excessive internal rotation) or eversion (excessive external rotation) of the foot usually leads to chain problems of the knees, hips and spine; high arches (i.e., arches that are too high) may cause uneven pressure on the foot, increase the burden on the sole of the foot, and cause pain, fatigue or plantar fasciitis; flat feet are caused by collapsed arches, which may lead to inversion, knee and hip pain. By reducing or increasing the thickness or changing the slope of the medial arch area support 22 or the lateral arch area support 23 of the support assembly 2 in the embodiment of the present invention, the medial or lateral support can be increased to prevent excessive inversion or eversion, or provide additional support and cushioning to reduce excessive pressure concentration, or increase longitudinal support.

[0064] In addition, the use of the forefoot support 21 can improve pain problems such as hallux valgus, that is, by designing a slight lateral support in the big toe area to guide the big toe back to the correct position and reduce deviation. The use of the metatarsophalangeal pad of the correction component 3 can improve the pain caused by excessive pressure between the corresponding toes or abnormal toe position.

[0065] In some embodiments, the insole molding 4, the base 1, the support component 2 and the correction component 3 all include two or more replaceable modules of different specifications, and these replaceable modules can constitute a module library. This design can greatly enhance the flexibility and applicability of the phantom, and can meet different individualized needs. By forming a module library, modules of different specifications can be freely combined and adjusted according to actual test requirements, thereby realizing personalized, fast and efficient orthopedic insole testing and optimization. The specifications described here mainly refer to different dimensional parameters (such as length, width, thickness, surface curvature, etc.), that is, the dimensional parameters are used as features for module division. For example, the insole molding module library can include a variety of insole moldings 4 of different shapes, sizes, and thicknesses, and can also be distinguished according to the material. The shape and size of the base module library can be adjusted according to the size and design requirements of the insole to adapt to insole tests of different sizes. The support component module library can include support modules for the forefoot, medial arch, lateral arch, heel and other areas. The specifications of these support modules can be divided into equal intervals based on the conventional parameter range of the human foot. It can be understood that the smaller the spacing is set, the better the adaptation effect. The correction component module library may include metatarsal pads 31, transverse arch pads, round pads, oval pads, etc. Each module has different sizes and shapes and can be selected and replaced according to actual needs. These modules can provide corresponding correction support for different foot problems (such as high arches, flat feet, etc.) through different designs. Different specifications of the correction component 3 modules can adapt to different types of foot problems, and personalized correction effects can be achieved by adjusting the combination of modules.

[0066] In the above embodiment, each module should be designed with standardized interfaces and dimensions to ensure that different modules can be easily combined and replaced. For example, a unified connector or interface is used to ensure compatibility between components. The management and storage of the module library can be implemented by designing a module library management system, which is used to classify, store and retrieve modules of different specifications. This management system can be a physical storage module rack or a digital module selection platform, which helps users quickly find the required module specifications through digital means. As user needs change, the module library can provide customized services, allowing users to design and produce new modules based on specific testing needs or foot problems. For example, the support or correction needs of certain specific areas can be solved by customized modules.

[0067] In some embodiments, Figure 1 As shown, the insole forming part 4 can be placed on the upper surface of the insole forming base, and the surface shape of the upper surface of the insole forming base is replicated by a pressurizing mechanism to produce a test insole. By applying uniform pressure by the pressurizing mechanism, the insole forming part 4 can accurately fit and replicate the original surface, forming a surface shape that is almost consistent with the upper surface of the phantom. This process changes the insole forming part 4 from a flat structure to a structure with a curved surface, that is, a shape similar to the bottom of the sole, and with an adapted functional part for correction in a specific area. The accuracy of this process is crucial to the final performance of the insole, especially when designing test insoles related to foot correction.

[0068] In some embodiments, the insole forming part 4 is made of low-temperature thermoplastic board or EVA foam material. Low-temperature thermoplastic board is a material that can be softened and easily formed at low temperature, has good thermoformability, and can be softened by heating at a lower temperature (such as 50-80°C), so that it is easy to press into the desired shape. After cooling, the shape of the low-temperature thermoplastic board will remain unchanged to form a stable structure. During the insole forming process, the low-temperature thermoplastic board can better simulate the surface shape of the phantom, and its processing technology is relatively simple and suitable for mass production. Low-temperature thermoplastic board has certain rigidity and strength, so it is suitable for making test insoles with relatively stable structure and complex shape. EVA (ethylene-vinyl acetate copolymer) foam is a soft, lightweight and highly elastic material with good shock absorption, softness and durability, and is particularly suitable for application scenarios that require high comfort and shock absorption effects. EVA foam material also has good compression resistance and elasticity, and can help provide better fit and comfort during the forming process of the test insole. The insole forming part 4 of the embodiment of the present invention preferably adopts a low-temperature thermoplastic board. Low temperature thermoplastic sheets can also be set up with a module library containing various sizes and shapes, or they can be cut manually or automatically according to actual conditions. Before rolling, the low temperature thermoplastic sheet is a relatively flat plate-like structure, and after rolling, it is a curved or three-dimensional structure with a curved surface.

[0069] In the above embodiment, the insole molding 4 of the one-piece structure avoids the hard edges caused by the splicing or seams of multiple pieces, which makes the surface of the insole smoother and reduces the friction when the sole of the foot contacts the insole, thereby improving the comfort. Due to the absence of seams and splicing, the overall curved surface of the insole is more streamlined, which can more evenly distribute the pressure on the sole of the foot, especially in different areas of the foot (such as the heel, forefoot, arch, etc.). This design helps to reduce local pressure concentration and prevent discomfort or injury caused by uneven pressure. The one-piece structure helps to improve the overall support of the insole and avoid loosening or dislocation of local seams. Especially in the case of needing to correct foot problems (such as flat feet, high arches, etc.), the one-piece molded insole can provide more stable support and help keep the foot in the correct position. Compared with the insole spliced ​​with multiple parts, the one-piece molded insole usually has a stronger structure and can withstand greater pressure and load, and is particularly suitable for corrective insoles that need to be used for a long time.

[0070] It can be understood that if the test insole has an unsatisfactory evaluation result, analyzing the problem can determine whether a new insole molding part 4 needs to be replaced. If the existing problem is not related to the overall contour and size of the insole molding part 4, the already formed insole molding part 4 can be flattened, and after the composition and upper surface shape of the insole molding base are readjusted, the flattened insole molding part 4 can be re-hot-pressed to obtain another improved shape of the test insole. In this method, the flattening operation can also be omitted. Since the insole molding part 4 will fit closely and replicate the shape with the upper surface of the insole molding base during the hot pressing process, the expected improved shape of the test insole can also be obtained.

[0071] In some embodiments, the phantom further includes a pressurizing mechanism, which is a rolling mechanism; the function of the rolling mechanism is to uniformly press the insole forming member 4 onto the upper surface of the insole forming base through rolling pressure, thereby achieving surface shape replication. The rolling mechanism can provide uniform and adjustable pressure to ensure good contact between the forming plate and the upper surface of the insole forming base. Compared with the traditional flat pressing method, the rolling mechanism can apply uniform pressure over a larger area, which helps to improve the precision of the forming.

[0072] In some embodiments, at least one of the pressurizing mechanism and the base 1 includes a heating element 11. The heating element 11 can heat the insole forming part 4 to a set temperature so as to make the material easier to shape during the hot pressing process. In an embodiment of the present invention, the heating element 11 can be arranged in the base 1, or in the pressurizing mechanism, or in both. The design of the built-in heating element 11 in the base 1 can ensure that the entire insole forming base can operate at a uniform temperature, so that the insole forming part 4 and the upper surface of the insole forming base can be evenly heated, avoiding the problem of inconsistent molding caused by uneven temperature. Providing the heating element 11 in the pressurizing mechanism can speed up the process of maintaining a consistent temperature of the insole forming part 4 during the rolling process, avoiding the deformation caused by the heat absorption of the pressurizing mechanism.

[0073] Furthermore, if Figure 3 As shown, the base 1 has a built-in heating element 11, which is used to heat the insole forming base and the insole forming element 4 to a set temperature. The formability and plasticity of the low-temperature thermoplastic plate will be enhanced after heating, so that these materials can better adapt to the shape of the upper surface of the insole forming base when pressurized, ensuring the accuracy and consistency of the forming process. The built-in heating element 11 in the base 1 can help control the working temperature of the insole forming base, ensuring that the temperature is maintained within the optimal range during the entire forming process, and further improving the replica effect.

[0074] As at least one achievable method, the built-in heating element 11 of the base can be made of a resistance wire and be equipped with a temperature sensor and a temperature control switch. The temperature sensor can control the heating temperature of the base, and the temperature control switch can control the opening and closing of the heating mode at any time.

[0075] In another embodiment, the base may not be provided with the heating element 11, but the base may be heated by heating the low-temperature thermoplastic plate alone. In this method, the low-temperature thermoplastic plate is quickly heated to a set temperature, or slightly higher than the set temperature, and then the roll forming is completed on the upper surface of the insole forming base within a set time. By making the heating function independent of the external design of the insole forming base, it is possible to avoid adding a complex heating structure inside the insole forming base, thereby simplifying the overall design of the insole forming base.

[0076] In some embodiments, the base 1, the support component 2 and the correction component 3 are connected by magnetism, adhesion or snap-on connection. This connection method facilitates the modular design of the device, enables quick assembly and disassembly during use, and facilitates flexible configuration according to different test requirements. Figure 3As shown, a plurality of magnetic components 12 can be embedded in the base 1; each module of the support component 2 and the correction component 3 can be made of a material that can be adsorbed by the magnetic component 12, or another magnetic component 12 is embedded in each module of the support component 2 and the correction component 3, and these magnetic components 12 can be adsorbed by the magnetic components 12 embedded in the base 1; the connection method of the built-in magnetic components 12 in all modules can also enable the correction component 3 to be fixed on the support component 2.

[0077] In the above embodiments, the adhesive method can provide a stronger fixing force, and an adhesive layer needs to be set on the mating surface of each module; the snap-fit ​​method requires that matching grooves and protrusion structures be set on the mating surface of each module so that they can be clamped and connected. This method provides a more stable connection method, which can avoid sliding of each module under rolling to the greatest extent.

[0078] The designs of these embodiments not only improve the working efficiency of the phantom, but also enhance its accuracy and flexibility in the insole molding process by combining advanced heating, pressurization, connection methods and material selection. The phantom is suitable for testing and producing many different types of insoles, especially in personalized customization, orthopedic insoles or other high-precision application fields, showing great potential.

[0079] In a second aspect, the present invention provides a method for automatically constructing a phantom to evaluate the function of an additively manufactured orthopedic insole, such as Figure 4 and Figure 6 As shown, the method comprises the following steps:

[0080] S10: Based on the design model of the orthopedic insole, the shape design parameters of the orthopedic insole are obtained. In this step, according to the existing orthopedic insole design model (which can be a computer-aided design drawing or 3D scanning data), the extracted shape parameters can include the size, shape and structure of each area of ​​the insole, etc., which are used for the subsequent selection of the most suitable phantom module. Specifically, the shape design parameters can include the length, width, thickness and curvature of the orthopedic insole, etc., which can be obtained through structural analysis of the patient's foot or professional assessment of orthopedic needs.

[0081] S20: According to the shape design parameters, determine the most matching phantom components to be selected; wherein the phantom includes: an insole molding 4, a base 1, a support component 2 and a correction component 3; the support component 2 includes at least one module of a forefoot area support 21, a medial arch area support 22, a lateral arch area support 23 and a heel area support 24; the correction component 3 includes at least one module of a metatarsal pad 31, a transverse arch pad, a circular pad and an elliptical pad. In this step, the base 1 is the basic structure that determines the insole, and different curvatures may be selected according to the foot shape or the required support force. The support component 2 provides a specific area of ​​foot support, and a special curvature shape may be required to adapt to a specific foot structure. The correction component 3 is used to correct specific foot problems, such as flat feet, high arches, etc.

[0082] S30: The selected support component 2 and the corrective component 3 are fixedly mounted on the selected base 1 to assemble into an insole forming base, wherein the upper surface of the insole forming base is formed with a surface shape for simulating a design model of the orthopedic insole.

[0083] S40: Place the selected insole forming part 4 on the insole forming base, and make the insole forming part 4 close to the upper surface of the insole forming base by hot pressing to replicate its shape. In this step, the accurate positioning of each module directly affects the comfort and correction effect of the final orthopedic or test insole. The connection of each module needs to be kept stable to prevent deviation during the rolling process. The purpose of heating is to enhance the flexibility and plasticity of the forming plate material, help the forming plate better adapt to the shape of the base 1 and the support component, and ensure the accuracy of subsequent forming. Optionally, the set temperature can be set to 60°C. In this process, the coordination of heating and pressurization is particularly important. Excessive pressure may cause deformation or damage to the material, and too little pressure may cause incomplete forming. The rolling method can provide uniform pressure and avoid local overpressure. During the pressurization process, the size of the pressure, the application time, etc. need to be precisely controlled to ensure that the forming plate can accurately reflect the design shape of the test insole.

[0084] S50: Demolding the hot-pressed insole to serve as a test insole, which is used to test and evaluate the function of the orthopedic insole. In this step, after the insole is cooled and solidified, the insole is carefully demolded and the test insole is removed. At this point, the insole has the shape of the orthopedic insole design and can be used for a series of tests and performance evaluations.

[0085] The automatic phantom construction method for evaluating the function of additively manufactured orthopedic insoles in the embodiment of the present invention can replicate the shape and structure of the orthopedic insole through precise shape design parameters combined with a modular phantom construction method, and produce a test insole with the same shape as the orthopedic insole, which can ensure the accuracy of the test results. By making test insoles for functional evaluation, the design effect can be quickly verified and the test cycle can be reduced. Different support and correction modules can be flexibly selected, and customized orthopedic insoles can be designed and evaluated according to different needs. This method can also be used in combination with additive manufacturing orthopedic insole technology to greatly improve development and production efficiency through rapid prototyping.

[0086] The method of the present invention provides an efficient and accurate means of evaluating the function of orthopedic insoles through a series of steps such as obtaining shape parameters based on the design model, modular phantom assembly, and hot pressing molding. Through this automatic phantom construction method, not only can the function of orthopedic insoles be tested and evaluated, but also strong support can be provided for their further optimization design.

[0087] In some embodiments, Figure 5 and Figure 6 As shown, the step of obtaining the shape design parameters of the orthopedic insole based on the design model of the orthopedic insole includes:

[0088] S21: Number and express shape parameters of substrates, support components and correction components of different sizes and thicknesses to form a module library. In this step, a unique number is assigned to each module (substrate, support component, correction component, etc.) to facilitate subsequent matching and retrieval; by standardizing shape parameters, a database is created to record the geometric characteristics of each module (such as thickness, length, width, curvature, etc.), providing a basis for subsequent selection and matching.

[0089] S22: extracting the contour and thickness of the forefoot area, medial arch area, lateral arch area and heel area of ​​the design model of the orthopedic insole, as well as the bottom contour of the entire design model of the orthopedic insole. In this step, the contour and thickness data of the key areas are extracted from the design model of the orthopedic insole; the detailed contour information of the orthopedic insole can be obtained using 3D scanning technology or digital modeling tools.

[0090] S23: Using the point cloud-based ICP registration method, the best matching base module is selected by comparing the bottom contour of the design model of the orthopedic insole with the base module library. In this step, ICP (Iterative Closest Point) achieves the alignment and matching of two sets of point clouds by calculating and comparing the distances between different point clouds. Based on the bottom contour of the orthopedic insole, it can be matched with each base 1 module in the base 1 module library to select the most suitable base 1 module. This process can gradually optimize the matching results in an iterative manner to ensure that the contour of the bottom layer of the insole can be highly consistent with the shape of the base 1 module, thereby providing the required comfort and support.

[0091] S24: Based on the extracted contours and thickness of the forefoot area, medial arch area, lateral arch area and heel area of ​​the design model of the orthopedic insole, determine the feature points of each area; use the partial point cloud registration method based on feature points to roughly match the modules of the support component to obtain a preliminary registration result; then use the ICP registration method based on point cloud to perform fine matching, and select the most matching forefoot area support, medial arch area support, lateral arch area support and heel area support from the preliminary registration result. In this step, the support module (forefoot, medial arch, lateral arch, heel) is roughly registered using the partial point cloud registration method based on feature points (usually points with obvious local geometric features, such as corner points, edge points, etc.). Feature point registration can quickly find the approximate position and posture (rotation and displacement) of the module, providing a preliminary alignment result for subsequent fine registration. Then use the ICP method for fine registration to extract the most matching support module parameters. The ICP algorithm gradually aligns the two point clouds in space by minimizing the distance between them. ICP provides the initial position and posture based on the coarse registration results, and iteratively optimizes the details to more accurately align the point clouds of the support module and the target area. The ICP method calculates the distance between each corresponding point pair, optimizes the rotation matrix and translation vector in each iteration, and gradually adjusts the position and direction of the module to achieve the best match. After several rounds of iterations, the ICP method can improve the accuracy of the registration, ensure that the matching error between the module and the target area is minimized, and accurately extract the most matching support module parameters. Through the two-step registration method (coarse registration + fine registration), the matching accuracy between the support module and the insole area can be greatly improved to ensure the comfort and functionality of the insole design. The feature point registration method can quickly provide preliminary matching results, while the ICP method can make fine adjustments, reducing the computational complexity and time consumption.

[0092] S25: Based on the extracted contours and thicknesses of the forefoot area, medial arch area, lateral arch area and heel area of ​​the design model of the orthopedic insole, the target area is detected based on point cloud data using PointNet++ or VoxelNet algorithms, or the target area is detected using the CorrNet3D unsupervised learning algorithm, and the best matching correction component is selected from the module library. In this step, a target detection algorithm based on point cloud data (such as PointNet++, VoxelNet, etc.) or an unsupervised non-rigid point cloud registration method (such as CorrNet3D) can be used to detect and extract the best matching correction component 3.

[0093] PointNet++ is a point cloud data processing framework based on deep learning, which can process complex 3D point cloud data, extract local features and learn global geometric structure. In specific implementation, first, the point cloud data of each module of the correction component 3 is obtained from the foot model. Then the point cloud data is preprocessed, including denoising, standardization and normalization. PointNet++ extracts local features in point cloud data through a hierarchical network architecture. The network designs a multi-scale feature learning mechanism that can capture local geometric information from different scales. PointNet++ combines the learning of local features to generate global descriptors, thereby identifying and matching the overall shape and structure of each module of the correction component 3. Through the trained PointNet++ model, the morphology of each module of the correction component 3 can be identified and classified, and matched to each module of the correction component 3 in the corresponding module library. Specifically, PointNet++ can detect the most suitable modules of the correction component 3 in the insole or foot model and extract its position, size, morphology and other parameters.

[0094] VoxelNet is a voxelized point cloud detection network that converts point cloud data into regular voxel grids. It is suitable for large-scale three-dimensional scenes and target detection tasks. The advantage of VoxelNet is that it can use voxelized data to simplify the sparsity problem in the point cloud and improve the detection accuracy. The input point cloud data is divided into small voxels (3D grids), and each voxel stores the point information in the point cloud. In this way, the sparsity of the data can be greatly reduced and the computational efficiency of the model can be improved. On the voxelized point cloud data, VoxelNet uses 3D convolutional neural networks (CNNs) for feature learning. The convolutional network can extract spatial local features from the voxel data of the point cloud, thereby capturing the details of each module of the correction component 3. Based on the extracted features, VoxelNet uses detection algorithms (such as 3D RPN) for target detection to identify the position, size and other parameters of each module of the correction component 3.

[0095] CorrNet3D is an unsupervised learning non-rigid point cloud registration network that can process dynamic and deformed 3D point cloud data and perform shape alignment and matching between point clouds. In the extraction of each module of the correction component 3, CorrNet3D can perform non-rigid registration of the foot point cloud data with each module of the correction component 3 in the module library to find the most suitable module. Unlike traditional registration methods, CorrNet3D uses an unsupervised learning method and does not require manual annotation of corresponding point pairs. By training the network, it can find corresponding point sets between different point clouds and perform shape alignment. CorrNet3D uses a deformation model for non-rigid registration, which can adapt to local deformation of point clouds and is particularly suitable for three-dimensional data with high individual differences such as human feet. Through non-rigid registration, CorrNet3D aligns the input point cloud with the point cloud data in the module library, finds the most matching modules of the correction component 3, and extracts its shape, size, position and other parameters.

[0096] In the above embodiment, the method systematically extracts and analyzes the shape design parameters of the design model of the orthopedic insole, combines point cloud registration technology and deep learning algorithms, and accurately selects the most matching base, support component and correction component from the module library. In this way, orthopedic insoles of different designs can be quickly constructed and evaluated, thereby optimizing the orthopedic effect and meeting personalized needs.

[0097] In some embodiments, the initial design scheme / design model of the orthopedic insole can be used as the first test insole, and can be tested using a plantar pressure testing device. If the test results meet the correction requirements, the use effect of the corrective insole is verified, and the design model can be made into a final product. If the test results do not meet the correction requirements, the size / height of the corresponding module is adjusted and tested again. The insole in different shape optimization iterations becomes the second test insole, the third test insole..., and the test insole finally obtained or with the best effect is called the target test insole. The method also includes:

[0098] After the first test insole is prepared, the first test insole is tested using a test device to obtain a test result; the test device may include a pressure sensor, a plantar scanner, a gait analyzer, a comfort evaluation device, etc., which are used to evaluate the functionality of the insole (such as support, comfort, durability, etc.) and whether it meets the design requirements. The test results of the first test insole provide data basis for subsequent adjustments, which may include comfort, support, and functional tests. Comfort can reflect the comfort feedback of the insole to the foot; support refers to whether the insole can provide appropriate support, especially the performance of the support component 2 and the correction component 3. Functional testing refers to whether the target foot problem (such as flat feet, high arches, etc.) is effectively improved.

[0099] Based on the test results of the first test insole, at least one module of the insole molding 4, the base 1, the support component 2 and / or the correction component 3 is replaced, and the second test insole is obtained after replacing the new insole molding 4. For example, if the support of the first test insole is not enough, the base 1 of different sizes or different curvatures can be replaced as needed. If the test shows that the support of the insole in certain areas is insufficient or uneven, the shape or thickness of the support component 2 may need to be replaced. If the correction effect is not obvious, it may be necessary to adjust the shape or curvature of the correction component 3, or replace the correction component 3 with a more suitable one.

[0100] Repeat the above steps until you have the target test insole. The target insole is the ideal insole for your specific foot problem (e.g., comfort, orthosis, support needs). Through step-by-step iterations, you can fine-tune every aspect of the insole to achieve optimal performance.

[0101] In the above embodiment, through continuous adjustment and testing, the design goal is gradually approached to ensure that the insole can provide the best support and comfort according to the user's foot characteristics and needs. Each time, the performance of the insole is analyzed through test data, the corresponding module components are adjusted, and molding and testing are performed again. This process is repeated until the test results show that the design of the insole fully meets the predetermined goals. In practical applications, this method helps to improve the quality of the product, especially for orthopedic insoles that require personalized customization, ensuring that they can better adapt to the user's foot characteristics.

[0102] In some embodiments, the contour and thickness of the metatarsal support area are determined based on the contour and thickness of the forefoot area, and the best matching metatarsal pad 31 is selected from the module library. Metatarsal support is essential for gait and comfort. In some embodiments, the contour and thickness of the transverse arch support area are determined based on the contour and thickness of the medial arch area and the lateral arch area, and the best matching transverse arch pad is selected from the module library. By comprehensively analyzing the contour and thickness of the forefoot area (metatarsal area) and the medial and lateral arch areas, a suitable module can be selected from the module library and matched according to the specific needs of the user (such as foot shape, pressure distribution, comfort requirements, etc.).

[0103] In some embodiments, the test insole of the present invention can be interfaced with existing plantar pressure measurement equipment, etc., to evaluate the effect of the insole before and after adjustment, and provide a reference for optimizing the insole design. Plantar pressure measurement equipment is an important tool for evaluating the pressure distribution of the foot and the comfort of the insole. By integrating a plantar pressure sensor in the test insole or interfacing with an existing plantar pressure measurement device, the pressure changes of the wearer's foot can be monitored in real time, so as to accurately evaluate the comfort, support and correction effect of the insole. Through the real-time collection of plantar pressure data, the tester can adjust the design or shape of the insole according to the pressure distribution. For example, if the pressure in certain parts is too high, the insole design can be locally adjusted to improve comfort or correction effect. Through this closed-loop feedback mechanism, the insole design can be optimized in a short time to achieve a personalized correction effect.

[0104] Corresponding to the above method, the present invention also provides a system, which includes a computer device, the computer device includes a processor and a memory, the memory stores computer instructions, the processor is used to execute the computer instructions stored in the memory, and when the computer instructions are executed by the processor, the system implements the steps of the method described above.

[0105] The embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the aforementioned method for automatically constructing a phantom for evaluating the function of an additively manufactured orthopedic insole are implemented. The computer-readable storage medium can be a tangible storage medium, such as a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a floppy disk, a hard disk, a removable storage disk, a CD-ROM, or any other form of storage medium known in the technical field.

[0106] According to the phantom for evaluating the function of additively manufactured orthopedic insoles and the automatic construction method thereof in the embodiments of the present invention, the beneficial effects that can be obtained include at least:

[0107] (1) The phantom for evaluating the function of additively manufactured orthopedic insoles and the method for automatically constructing the phantom provide an efficient, environmentally friendly and accurate solution for testing the fit and evaluation of insoles by reducing material waste, improving test efficiency and ensuring consistency.

[0108] (2) The present invention proposes a method for automatically matching the module parameters of orthopedic insoles, which is conducive to quickly and accurately selecting the modules of the phantom for assembly. While improving the test efficiency, the accuracy and consistency of the test are ensured. This method not only has significant advantages in improving production efficiency and reducing manual errors, but also can adapt to the testing requirements of different types of insoles, promoting the intelligent and automated development of insole testing technology.

[0109] (3) The present invention proposes to shape the test insole by heating the module base, which can modify the test insole more quickly, and the test insole is designed as an integrated unit, so that the deformation is more continuous. The smooth and continuous curved surface design optimizes the comfort, support and stability of the insole; it can not only effectively improve foot problems and enhance wearing comfort, but also simplify the production process, reduce costs, and can be customized according to user needs. The consistency of the overall structure, uniform pressure distribution and high-strength support make this design have significant advantages in foot correction and comfort.

[0110] It should be understood by those skilled in the art that the exemplary components, systems and methods described in conjunction with the embodiments disclosed herein can be implemented in hardware, software or a combination of the two. Whether it is performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention. When implemented in hardware, it can be, for example, an electronic circuit, an application-specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, etc. When implemented in software, the elements of the present invention are programs or code segments used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or a communication link via a data signal carried in a carrier.

[0111] It should be clear that the present invention is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present invention.

[0112] In the present invention, features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, and / or combined with features of other embodiments or replace features of other embodiments.

[0113] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the embodiments of the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for automatically constructing a phantom for evaluating the function of additively manufactured orthopedic insoles, characterized in that: The method comprises the following steps: Based on the design model of the orthopedic insole, shape design parameters of the orthopedic insole are obtained, wherein the shape design parameters include the contours and thicknesses of the forefoot region, the medial arch region, the lateral arch region and the heel region of the design model, and the bottom contour of the entire design model of the orthopedic insole; According to the shape design parameters, the most matching components of the phantom to be selected are determined; wherein the phantom includes: an insole molding, a base, a support component and a correction component; the support component includes at least one module of a forefoot area support, a medial arch area support, a lateral arch area support and a heel area support; the correction component includes at least one module of a metatarsal pad, a transverse arch pad, a circular pad and an elliptical pad; the base is determined based on the bottom contour of the design model of the orthopedic insole; the forefoot area support, the medial arch area support, the lateral arch area support and the heel area support are determined based on the contours and thicknesses of the forefoot area, the medial arch area, the lateral arch area and the heel area of ​​the design model of the orthopedic insole; the correction component is determined based on the contours and thicknesses of the forefoot area, the medial arch area, the lateral arch area and the heel area of ​​the design model of the orthopedic insole; The selected support component and the corrective component are fixedly mounted on the selected base to assemble into an insole forming base, wherein the upper surface of the insole forming base is formed with a surface shape for simulating a design model of the orthopedic insole; Placing the selected insole forming piece on the insole forming base, and pressing the insole forming piece to make it close to the upper surface of the insole forming base by hot pressing to replicate its shape; The insole molded part after hot pressing is demoulded and taken out to serve as a test insole, and the test insole is used to test and evaluate the function of the orthopedic insole.

2. The method for automatically constructing a phantom for evaluating the function of an additively manufactured orthopedic insole according to claim 1, characterized in that: The steps of obtaining the shape design parameters of the orthopedic insole based on the design model of the orthopedic insole and determining the most matching phantom component modules to be selected according to the shape design parameters include: Bases, support components and correction components of different sizes and thicknesses are numbered and expressed in shape parameters to form a module library; Extracting the contours and thicknesses of the forefoot region, the medial arch region, the lateral arch region and the heel region of the design model of the orthopedic insole, as well as the bottom contour of the entire design model of the orthopedic insole; Using the point cloud-based ICP registration method, by comparing the underlying contour of the design model of the orthopedic insole with the matching of the base module library, the best matching base module is selected; Based on the extracted contours and thicknesses of the forefoot region, medial arch region, lateral arch region and heel region of the design model of the orthopedic insole, the feature points of each region are determined; the modules of the support component are roughly matched using a partial point cloud registration method based on feature points to obtain a preliminary registration result; then, a point cloud-based ICP registration method is used for fine matching, and the best matching forefoot region support, medial arch region support, lateral arch region support and heel region support are selected from the preliminary registration results; Based on the extracted contours and thicknesses of the forefoot area, medial arch area, lateral arch area and heel area of ​​the design model of the orthopedic insole, the target area is detected based on point cloud data using PointNet++ and VoxelNet algorithms, or the target area is detected using the CorrNet3D unsupervised learning algorithm, and the best matching correction component is selected from the module library.

3. The method for automatically constructing a phantom for evaluating the function of an additively manufactured orthopedic insole according to claim 2, characterized in that: Determine the contour and thickness of the metatarsal support area based on the extracted contour and thickness of the forefoot area, and select the most matching metatarsal pad from the module library; The contour and thickness of the transverse arch support area are determined based on the extracted contours and thicknesses of the medial arch area and the lateral arch area, and the most matching transverse arch pad is selected from the module library.

4. The method for automatically constructing a phantom for evaluating the function of an additively manufactured orthopedic insole according to claim 1, characterized in that: After the first test insole is prepared, the first test insole is tested using a test device to obtain a test result; Based on the test result of the first test insole, at least one module of the insole forming part, the base, the support component and the correction component is replaced, and a second test insole is obtained after replacing the new insole forming part; Repeat the above steps until the target test insole is obtained.

5. A phantom for evaluating the function of additively manufactured orthopedic insoles, characterized in that: The phantom comprises: an insole forming part, a base, a support component and a correction component, wherein the support component is used to be installed on the upper surface of the base, and the correction component is used to be installed on the upper surface of the base and / or the support component; Wherein, the support assembly includes at least one module of a forefoot region support, a medial arch region support, a lateral arch region support, and a heel region support; The correction component includes at least one module of a metatarsal pad, a transverse arch pad, a circular pad, and an oval pad; In the prepared state of the phantom, the support component and the correction component are fixedly mounted on the base to be assembled into an insole forming base, and the upper surface of the insole forming base is formed with a surface shape for simulating a design model of an orthopedic insole; the insole forming piece can be placed on the insole forming base, and the insole forming piece can be pressed against the upper surface of the insole forming base by hot pressing to replicate its shape; The insole molding is used as a test insole after being demoulded and removed, and the test insole is used to test and evaluate the function of the orthopedic insole.

6. The phantom for evaluating the function of additively manufactured orthopedic insoles according to claim 5, characterized in that: The insole forming part, base, support component and correction component all include more than two replaceable modules with different specifications.

7. The phantom for evaluating the function of additively manufactured orthopedic insoles according to claim 5, characterized in that: The insole forming part is made of low-temperature thermoplastic board or EVA foam material.

8. The phantom for evaluating the function of additively manufactured orthopedic insoles according to claim 5, characterized in that: The phantom further comprises a pressurizing mechanism, which is a rolling mechanism; One of the pressurizing mechanism and the substrate includes at least a heating element.

9. The phantom for evaluating the function of additively manufactured orthopedic insoles according to claim 5, characterized in that: The base has a built-in heating element for heating the insole forming element to a set temperature.

10. The phantom for evaluating the function of additively manufactured orthopedic insoles according to claim 5, characterized in that: The base, the supporting component and the correcting component are connected by magnetism, adhesion or snap-fit.

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