Wrist 3D printing rehabilitation brace with special lattice structure and preparation method of wrist 3D printing rehabilitation brace

Abstract

The invention discloses a wrist 3D printing rehabilitation brace of a special lattice structure and a preparation method of the wrist 3D printing rehabilitation brace, and belongs to the technical field of medical rehabilitation braces.The wrist 3D printing rehabilitation brace comprises a wrist brace body, a finger brace body and a fingerstall which are prepared through the 3D printing technology, and the wrist brace body, the finger brace body and the fingerstall are detachably connected; inflation bags are arranged in the wrist brace body and the finger brace body, and connecting pieces of the wrist brace body and the finger brace body are specifically fastening buckles capable of inflating the inflation bags in the wrist brace body and the finger brace body. The weight of the brace is greatly reduced on the premise that the strength is guaranteed, the multiple air holes are formed in the surface of the brace, good ventilation performance is guaranteed by combining the grid characteristics of the topological structure, stuffiness and discomfort caused by long-time wearing are avoided, the supporting strength of different areas can be adjusted according to the rehabilitation process, and disassembly, assembly and cleaning are convenient.

Description

Technical Field

[0001] The present invention relates to the field of medical rehabilitation braces, and in particular to a wrist 3D printed rehabilitation brace with a special lattice structure and a preparation method thereof. Background Art

[0002] The 3D printed wrist rehabilitation brace is a wrist brace made using 3D printing. It is mainly used for patients with damaged forearm or palm bones to fix the affected area and prevent secondary injuries, thereby assisting rehabilitation. However, existing brace designs cannot fully adapt to individual differences, resulting in discomfort or poor rehabilitation effects. Traditional materials and designs often find it difficult to strike a balance between reducing weight and ensuring support, and are prone to causing fatigue when worn.

[0003] In response to the above problems, a 3D printed hollow external fixation brace and its manufacturing system and method are disclosed in the Chinese invention patent with announcement number CN109719950A. The brace is a mesh hollow structure, which is made by a 3D printing method. The shape and size of the brace are highly consistent with the external contour of the limb part to be treated by the patient. The brace of the present invention can greatly improve the air permeability of the external fixation device without reducing the fixation strength; the brace of the present invention can ensure that the brace is tailored to each patient and achieves the requirement of high fit.

[0004] In the technical solution disclosed in the above patent, although the breathability of the brace is improved to a certain extent, the whole is still one-piece, which makes it difficult to decompose and disassemble for cleaning during use. At the same time, the internal support strength cannot be flexibly adjusted according to the progress of the patient's condition. In view of this, the present application is filed. Summary of the invention

[0005] To this end, the present invention provides a wrist 3D printed rehabilitation brace with a special lattice structure and a preparation method thereof to solve the above-mentioned problems.

[0006] The present invention provides the following technical solutions: a wrist 3D printed rehabilitation brace with a special lattice structure, comprising a wrist brace, a finger brace and a finger cuff prepared by 3D printing technology, wherein the wrist brace, the finger brace and the finger cuff are detachably connected, and in actual use, the patient can adjust the support strength of different areas according to the rehabilitation progress, which is convenient for disassembly and cleaning, wherein the interiors of the wrist brace and the finger brace are both provided with inflatable bags, and specifically, the inflation amount of the inflatable bags is adjusted to achieve the support strength of the supported part of the patient, and the connecting parts of the wrist brace and the finger brace are specifically fastening buckles that can inflate the inflatable bags inside the two, and through the design of the fastening buckles, the two inflatable bags can be inflated at the same time for quick support, or they can be inflated separately for adjusting the support strength.

[0007] As a preferred solution of the present invention, the finger sleeve is installed on the finger support through a threaded structure, which has a simple structure, is easy to produce, and is convenient to operate. It can be flexibly disassembled and assembled during use for cleaning or removed when no longer used, and has high flexibility.

[0008] As a preferred solution of the present invention, the fastening buckle is specifically a waist-shaped buckle with plug-in protrusions at both ends. The outer sides of the wrist brace and the finger brace are both provided with plug-in holes for inserting and fixing the plug-in protrusions. In actual use, it is only necessary to align the wrist brace and the finger brace, and then insert the two plug-in protrusions of the fastening buckle into the plug-in holes of the wrist brace and the finger brace respectively, so that the wrist brace and the finger brace can be assembled. When disassembly is required, it is only necessary to buckle out each fastening buckle.

[0009] As a preferred solution of the present invention, the air bag is provided with a valve core which is movable and extends to the outside of the plug-in protrusion. During actual assembly, the plug-in protrusion is inserted into the valve core, and the valve core has a one-way air intake structure. Therefore, after the assembly is completed, it is only necessary to inflate the valve core with the help of external inflation equipment to realize the function of inflating the air bag of the wrist brace or finger brace, thereby realizing the adjustment of the support strength.

[0010] As a preferred solution of the present invention, a magic tape with two ends that can be bonded together is provided in a ring shape on the outer wall of the wrist brace. After the two ends of the magic tape are connected, the fastening buckle can be covered inside. By setting the magic tape, after the fastening buckle is installed and the wrist brace and the finger brace are assembled, the fastening buckle is still exposed to the outside. The fastening buckle has the risk of detachment and is not beautiful. At this time, the two ends of the magic tape are bonded to cover the fastening buckle, which prevents the fastening buckle from detaching and improves the aesthetics to a certain extent.

[0011] As a preferred solution of the present invention, the wrist brace is provided with a strap to ensure stability when worn.

[0012] As a preferred solution of the present invention, the materials of the wrist brace, finger brace and finger sleeve are all a composite material of nylon and thermoplastic polyurethane (TPU). The composite material has excellent flexibility and supporting force, which not only ensures the rigidity of the brace to provide effective wrist support, but also has appropriate flexibility to ensure wearing comfort. It is biocompatible, not easy to be allergic, can reduce the risk of infection during wearing, and meets the medical needs of long-term wearing.

[0013] As a preferred solution of the present invention, the strap is an elastic strap made of highly elastic material, which can adapt to patients of different body shapes and reduce local pressure to further improve comfort.

[0014] A method for preparing a wrist 3D printed rehabilitation brace with a special lattice structure, which is used to prepare the above-mentioned wrist 3D printed rehabilitation brace, comprises the following steps: S1. Data acquisition: Use CT data with a slice thickness of less than 1 mm or high-precision cloud image data from a 3D scanner to obtain accurate data of the patient's wrist; S2, data processing: use modeling and inverse software to process the skin model and bone model; S3. Brace structure design: Use software to design the brace coverage, avoid brace coverage for protruding ulna stem, and thicken the brace wall thickness of the affected area; S4, lattice structure design: Use topology software to process the designed brace structure, design Thiessen polygon structure to make the brace lightweight and topologically processed; S5. 3D printing: Use slicing software to slice and add supports to the designed brace before printing, and then print it to form a wrist brace, finger brace and finger sleeve with a honeycomb, grid or trapezoidal support structure. The remaining parts do not need to be prepared using 3D printing technology and can be directly purchased and assembled to form a rehabilitation brace; S6. Clinical data collection: After delivery, the patient's wearing data is recorded and the design is continuously optimized through iteration.

[0015] The beneficial effects of the present invention are as follows: 1. The wrist brace, finger brace and finger sleeve of the present invention are detachably connected. In actual use, the patient can adjust the support strength of different areas according to the rehabilitation process, which is convenient for disassembly and cleaning. In particular, the wrist brace and the finger brace are both provided with inflatable bags inside. Specifically, the support strength of the supported part of the patient is achieved by adjusting the inflation amount of the inflatable bags. The connecting parts of the wrist brace and the finger brace are specifically fastening buckles that can inflate the inflatable bags inside the two. Through the design of the fastening buckle, the two inflatable bags can be inflated at the same time for quick support, or they can be inflated separately for adjusting the support strength.

[0016] 2. The present invention effectively solves the problems of poor air permeability, low wearing comfort, single structure and lack of biomechanical support of existing braces through the use of lattice structures and advanced materials, thereby improving the patient's rehabilitation effect and comfort in daily life.

[0017] 3. The brace of the present invention obtains accurate data of the patient's wrist through 3D scanning technology, and combines topological optimization and bionic design to generate a customized brace that is highly compatible with the patient's wrist structure, ensuring that there is no pressure or foreign body sensation when worn, thereby improving the wearing comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is the overall structure diagram of the brace of the present invention; Figure 2 yes Figure 1 A partial enlarged view of the fastening buckle portion; Figure 3 is a bottom view of the wrist brace of the present invention; Figure 4 It is a basic flow chart of the preparation method of the present invention.

[0020] Legend: 1. Wrist brace; 2. Finger brace; 3. Finger sleeve; 4. Adhesive Velcro; 5. Fastening buckle; 501, valve core; 6. Inflatable bag; 7. Strap. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Specific examples are given below.

[0023] like Figure 1-Figure 3 shown.

[0024] A wrist 3D printed rehabilitation brace with a special lattice structure comprises a wrist brace 1, a finger brace 2 and a finger sleeve 3 prepared by 3D printing technology. The wrist brace 1, the finger brace 2 and the finger sleeve 3 are detachably connected. In actual use, the patient can adjust the support strength of different areas according to the rehabilitation process, which is convenient for disassembly, assembly and cleaning. Inflatable bags 6 are provided inside the wrist brace 1 and the finger brace 2. Specifically, the inflation amount of the inflatable bags 6 is adjusted to achieve the support strength of the supported part of the patient. The connecting piece of the wrist brace 1 and the finger brace 2 is specifically a fastening buckle 5 that can inflate the inflatable bags 6 inside the two. Through the design of the fastening buckle 5, the two inflatable bags 6 can be inflated at the same time for quick support, or they can be inflated separately for adjusting the support strength.

[0025] The finger sleeve 3 is installed on the finger support 2 through a threaded structure, which has a simple structure, is easy to produce, and is convenient to operate. It can be flexibly disassembled and assembled during use, and can be used for cleaning or removed and no longer used, and has high flexibility.

[0026] The fastening buckle 5 is specifically a waist-shaped buckle with plug-in protrusions at both ends. Plug-in holes for inserting and fixing the plug-in protrusions are reserved on the outer sides of the wrist brace 1 and the finger brace 2. In actual use, it is only necessary to align the wrist brace 1 and the finger brace 2, and then insert the two plug-in protrusions of the fastening buckle 5 into the plug-in holes of the wrist brace 1 and the finger brace 2 respectively, so that the wrist brace 1 and the finger brace 2 can be assembled. When disassembly is required, it is only necessary to buckle out each fastening buckle 5.

[0027] The air bag 6 is provided with a valve core 501 which is movable and extends to the outside of the plug-in protrusion. During actual assembly, the plug-in protrusion is inserted into the valve core 501. The valve core 501 has a one-way air intake structure. Therefore, after the assembly is completed, it is only necessary to inflate the valve core 501 with the help of an external inflation device to inflate the air bag 6 of the wrist brace 1 or the finger brace 2, thereby achieving the function of inflating the support strength.

[0028] The outer wall of the wrist brace 1 is provided with an adhesive magic tape 4 at both ends which can be bonded together. After the two ends of the adhesive magic tape 4 are connected, the fastening buckle 5 can be covered inside. By setting the adhesive magic tape 4, after the fastening buckle 5 is installed, the wrist brace 1 and the finger brace 2 are assembled. At this time, the fastening buckle 5 is still exposed to the outside, and there is a risk of the fastening buckle 5 being detached and it is not beautiful. At this time, the two ends of the adhesive magic tape 4 are bonded, so that the fastening buckle 5 can be covered to prevent the fastening buckle 5 from being detached and the aesthetics can be improved to a certain extent.

[0029] The wrist brace 1 is provided with a strap 7 to ensure stability when worn. The strap 7 is an elastic band made of highly elastic material, which can adapt to patients of different body shapes and reduce local pressure to further improve comfort.

[0030] The materials of the wrist brace 1, the finger brace 2 and the finger sleeve 3 are all a composite material of nylon and thermoplastic polyurethane TPU. The composite material has excellent flexibility and supporting force, which not only ensures the rigidity of the brace to provide effective wrist support, but also has appropriate flexibility to ensure wearing comfort. It is biocompatible, not easy to be allergic, can reduce the risk of infection during wearing, and meets the medical needs of long-term wearing.

[0031] like Figure 4 shown.

[0032] A method for preparing a wrist 3D printed rehabilitation brace with a special lattice structure, which is used to prepare the above-mentioned wrist 3D printed rehabilitation brace, comprises the following steps: S1. Data acquisition: Use CT data with a slice thickness of less than 1 mm or high-precision cloud image data from a 3D scanner to obtain accurate data of the patient's wrist; S2, data processing: use modeling and inverse software to process the skin model and bone model; S3. Brace structure design: Use software to design the brace coverage, avoid brace coverage for protruding ulna stem, and thicken the brace wall thickness of the affected area; S4, lattice structure design: Use topology software to process the designed brace structure, design Thiessen polygon structure to make the brace lightweight and topologically processed; S5, 3D printing: Use slicing software to slice and add supports to the designed brace before printing, and then print it to form a wrist brace 1, a finger brace 2 and a finger sleeve 3 with a honeycomb, grid or trapezoidal support structure. The remaining parts do not need to be prepared using 3D printing technology and can be directly purchased and assembled to form a rehabilitation brace; S6. Clinical data collection: After delivery, the patient's wearing data is recorded and the design is continuously optimized through iteration.

[0033] More specifically, the precise data of the patient's wrist is obtained through 3D scanning technology, and AI is combined with a large database to perform topology on the patient's wrist data. According to the final data, AI automatically performs three-dimensional modeling to generate a three-dimensional model diagram of a customized rehabilitation brace that is highly consistent with the patient's wrist structure. CAD is used to design the coverage of the rehabilitation brace, leaving a gap between the coverage of the rehabilitation brace and the patient's skin. A lattice structure based on natural biomorphology is used to give the rehabilitation brace a honeycomb, grid or trapezoidal support structure. AI is combined with a large database to determine the precise data for significantly reducing the weight of the rehabilitation brace while ensuring strength, and A three-dimensional model diagram of the final customized rehabilitation brace is generated, and the final data is imported into the 3D printer. The slicing software is used to slice and add supports to the rehabilitation brace before printing to further ensure the rigidity of the rehabilitation brace to provide effective wrist support. The 3D printer prints the rehabilitation brace to form a wrist brace 1, a finger brace 2 and a finger sleeve 3 with a honeycomb, grid or trapezoidal support structure. The remaining parts do not need to be prepared using 3D printing technology and can be directly purchased and assembled to form a rehabilitation brace. After the rehabilitation brace is delivered, the patient's wearing data is recorded, and the design of the rehabilitation brace is continuously iterated and optimized.

[0034] The method of the present invention adopts a lattice structure based on natural biological morphology, so that the brace has a honeycomb, grid or trapezoidal support structure. Through computer-aided design (CAD) and optimization algorithms, the brace can be greatly reduced in weight while ensuring strength. The surface of the brace is provided with multiple ventilation holes, which, combined with the grid characteristics of the topological structure itself, ensure good ventilation performance and avoid stuffiness and discomfort when worn for a long time.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A wrist 3D printed rehabilitation brace with a special lattice structure, characterized in that: The invention comprises a wrist brace (1), a finger brace (2) and a finger sleeve (3) prepared by 3D printing technology, wherein the wrist brace (1), the finger brace (2) and the finger sleeve (3) are detachably connected to each other, and an inflatable bag (6) is arranged inside the wrist brace (1) and the finger brace (2), and the connecting piece between the wrist brace (1) and the finger brace (2) is specifically a fastening buckle (5) capable of inflating the inflatable bags (6) inside the two.

2. The wrist 3D printed rehabilitation brace with a special lattice structure according to claim 1, characterized in that: The finger sleeve (3) is mounted on the finger support (2) via a threaded structure.

3. The wrist 3D printed rehabilitation brace with a special lattice structure according to claim 1, characterized in that: The fastening buckle (5) is specifically a waist-shaped buckle having plug-in protrusions at both ends, and plug-in holes for inserting and fixing the plug-in protrusions are reserved on the outer sides of the wrist brace (1) and the finger brace (2).

4. The wrist 3D printed rehabilitation brace with a special lattice structure according to claim 3, characterized in that: The inflatable bag (6) is provided with a valve core (501) which movably penetrates to the outside of the plug-in lug.

5. The wrist 3D printed rehabilitation brace with a special lattice structure according to claim 1, characterized in that: The outer wall of the wrist brace (1) is provided with an adhesive magic tape (4) in an annular shape, the two ends of which can be adhesively connected. After the two ends of the adhesive magic tape (4) are connected, the fastening buckle (5) can be covered inside.

6. The wrist 3D printed rehabilitation brace with a special lattice structure according to claim 1, characterized in that: The wrist brace (1) is provided with a binding strap (7).

7. The wrist 3D printed rehabilitation brace with a special lattice structure according to claim 1, characterized in that: The wrist brace (1), the finger brace (2) and the finger sleeve (3) are all made of a composite material of nylon and thermoplastic polyurethane (TPU).

8. The wrist 3D printed rehabilitation brace with a special lattice structure according to claim 6, characterized in that: The binding belt (7) is an elastic belt.

9. A method for preparing a wrist 3D printed rehabilitation brace with a special lattice structure, used to prepare the wrist 3D printed rehabilitation brace with a special lattice structure according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Data acquisition: Use CT data with a slice thickness of less than 1 mm or high-precision cloud image data from a 3D scanner to obtain accurate data of the patient's wrist; S2, data processing: use modeling and inverse software to process the skin model and bone model; S3. Brace structure design: Use software to design the brace coverage, avoid brace coverage for protruding ulna stem, and thicken the brace wall thickness of the affected area; S4, lattice structure design: Use topology software to process the designed brace structure, design Thiessen polygon structure to make the brace lightweight and topologically processed; S5, 3D printing: Use slicing software to slice and add supports to the designed brace before printing, and then print it to form a wrist brace (1), a finger brace (2) and a finger sleeve (3) with a honeycomb, grid or trapezoidal support structure. The remaining parts do not need to be prepared using 3D printing technology and can be directly purchased and assembled to form a rehabilitation brace; S6. Clinical data collection: After delivery, the patient's wearing data is recorded and the design is continuously optimized through iteration.

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