CN112545733A - Manufacturing method and system of wrist fixing protector and protector - Google Patents
Manufacturing method and system of wrist fixing protector and protector Download PDFInfo
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- CN112545733A CN112545733A CN202011325497.6A CN202011325497A CN112545733A CN 112545733 A CN112545733 A CN 112545733A CN 202011325497 A CN202011325497 A CN 202011325497A CN 112545733 A CN112545733 A CN 112545733A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
- A61F5/04—Devices for stretching or reducing fractured limbs; Devices for distractions; Splints
- A61F5/05—Devices for stretching or reducing fractured limbs; Devices for distractions; Splints for immobilising
- A61F5/058—Splints
- A61F5/05841—Splints for the limbs
- A61F5/05858—Splints for the limbs for the arms
- A61F5/05866—Splints for the limbs for the arms for wrists, hands, fingers or thumbs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Biomedical Technology (AREA)
- Nursing (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Instructional Devices (AREA)
Abstract
The invention discloses a method and a system for manufacturing a wrist fixing protector and the protector, wherein the method comprises the following steps: selecting a coverage range according to three-dimensional data obtained by scanning a hand to obtain patch data; designing a face-to-solid model according to the patch data, so that the thickness of the solid model is outwards produced; carrying out mesh division on the entity model, and carrying out hollow-out treatment according to the divided mesh distribution; and taking the processed solid model as data reference for 3D printing to realize 3D printing of the wrist fixing protector. According to the invention, the protection model of the software copying wrist is realized through a plurality of steps of scanning data acquisition, scanning model preprocessing, entity model generation range selection, thickness entity model generation, grid division, hollow pattern design, Boolean operation and printing, and the manufactured protection tool is convenient to wear and has good wearing and fixing effects according to the protection tool of a user during model design.
Description
Technical Field
The invention relates to the field of protectors, in particular to a method and a system for manufacturing a wrist fixing protector and the protector.
Background
Aiming at wrist fracture, dislocation, strain or after operation, the wrist needs to be fixed and the movement of the wrist is limited. In the traditional process, the wrist is usually fixed by plaster, the surface of the wrist is wound with gauze and then is coated with plaster, and the fixation of the wrist is finished by utilizing the hardening of the plaster. In such a fixing mode, a patient needs to bear larger plaster weight, and meanwhile, the plaster is too closed, is not breathable and is troublesome to disassemble.
Therefore, the prior art is still in need of further development.
Disclosure of Invention
In view of the above technical problems, embodiments of the present invention provide a method and a system for manufacturing a wrist fixing supporter, and a supporter.
In a first aspect of the present invention, there is provided a method for manufacturing a wrist fixing supporter, comprising:
selecting a coverage range according to three-dimensional data obtained by scanning a hand to obtain patch data;
designing a face-to-solid model according to the patch data, so that the thickness of the solid model is outwards produced;
carrying out mesh division on the entity model, and carrying out hollow-out treatment according to the divided mesh distribution;
and taking the processed solid model as data reference for 3D printing to realize 3D printing of the wrist fixing protector.
Optionally, the three-dimensional data obtained from the pair of hand scans includes:
scanning the hand to obtain scanning data, processing the scanning data, and performing external expansion or expansion by using the scanning data to obtain a three-dimensional model, wherein the internal surface area of the three-dimensional model is larger than the external surface area of the hand.
Optionally, the mesh partitioning of the solid model includes:
and dividing the three-dimensional model obtained by external expansion or expansion into tetrahedral mesh combinations with equal size by using reverse software or finite element processing software, and dividing the surface of the three-dimensional model into parameterization units of triangular patches with equal size.
Optionally, the performing the hollow processing according to the divided grid distribution includes:
performing unit distribution on the divided tetrahedral mesh combination by using a preset hollowed pattern;
and performing Boolean operation on the hollowed-out pattern and the three-dimensional model to obtain the hollowed-out three-dimensional model.
Optionally, the unit distribution of the preset hollow pattern on the divided tetrahedral mesh combination includes:
the hollow pattern is used for forming a Boolean stretching body, and the axis of the Boolean stretching body is parallel to the normal average line of the triangular patch, so that the hollow pattern is perpendicular to the surface of the three-dimensional model.
Optionally, the selecting a coverage range according to three-dimensional data obtained by scanning a hand further includes:
selecting line and plane data displayed by three-dimensional data obtained by hand scanning, wherein a gap is reserved on the inner side of the selected curved wrist; and the selected line surface data is used for determining the coverage range of the wrist fixing protector.
In a second aspect of the invention, there is provided a system for manufacturing a wrist immobilization brace, comprising a computer readable storage medium for performing the method of manufacturing a wrist immobilization brace according to the first aspect.
The invention provides a wrist fixing protector, which comprises a protector body matched with a wrist and an arm, wherein the protector body is provided with regularly distributed hollow parts.
Further, the wrist fixing supporter is manufactured by the manufacturing method according to the first aspect of the present invention.
According to the invention, the protection model of the wrist is simulated by software, and the protective clothing of the user is designed according to the model, so that the manufactured protective clothing is convenient to wear and has good wearing and fixing effects. In addition, the hollow light design is more breathable and portable.
Drawings
Fig. 1 is a schematic view of a scan model obtained by a method for manufacturing a wrist fixing supporter according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a scan model obtained in an embodiment of the present invention.
FIG. 3 is a schematic diagram of a model after preprocessing according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a model after coverage selection obtained in the embodiment of the present invention.
FIG. 5 is a diagram of a solid model obtained in an embodiment of the present invention.
Fig. 6 is a schematic diagram of a gridding model obtained in the embodiment of the present invention.
Fig. 7 is a schematic diagram of a hollow pattern generating entity obtained in the embodiment of the present invention.
Fig. 8 is a schematic view of a brace model obtained in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," and "fourth," if any, in the description and claims of the invention and in the above-described figures are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1, the method for manufacturing a wrist fixing supporter provided by the present invention includes the following steps:
and S100, selecting a coverage range according to the three-dimensional data obtained by scanning the hand to obtain patch data.
Scanning is performed for the hand (including the wrist and arm portions) using optical three-dimensional scanning. During scanning, a user needs to stretch the thumb to obtain a three-dimensional scanning model, and the data format is STL (standard template library) as shown in FIG. 2.
In a specific implementation, the three-dimensional data obtained from the pair of hand scans includes:
scanning a hand to obtain scanning data, preprocessing the scanning data, and performing external expansion or expansion on the scanning data to obtain three-dimensional data, wherein the internal surface area of the three-dimensional data is larger than the external surface area of the hand. Software such as Geomagic, Materialise 3-matic may be used.
Further, the scanned data is preprocessed and the data is flared or expanded, typically 1mm to 2 mm. Design on this basis, aim at makes the protective equipment not only the profile modeling, has a bit interval with human surface again, does benefit to and dresses and increase the travelling comfort after wearing, reduces the oppression of stereoplasm protective equipment to soft skin.
And S200, designing a face-to-solid model according to the patch data, so that the solid model is produced outwards in thickness.
Scanning the data is not sufficient to produce a design because it is not a solid and therefore requires processing of the data to form a solid model to facilitate design.
When generating the solid model, the range selection of the patch data is required. It should be noted that the inner side of the wrist portion of the selected curved surface needs to be provided with a gap for facilitating the wearing.
Selecting line and plane data displayed by three-dimensional data obtained by hand scanning, wherein a gap is reserved on the inner side of the selected curved wrist; and the selected line surface data is used for determining the coverage range of the wrist fixing protector.
For example: the selected range covers most of the wrists, at least covers 6cm of the forearm, and fixation is facilitated; the tail end does not exceed the palm, and meanwhile, the thumb is separated, so that the fingers can move; the inside opening gap can be 1-3 cm.
The data format STL is in a triangular patch format, and can be edited by general reverse software, and the selection range can be selected by a relevant curve frame or by wiping. Selecting and separating a new object without thickness characteristics. This range is the coverage of the brace, as shown in fig. 4.
And designing the dough to the entity according to the selected dough sheet data. And generating a thickness entity model aiming at the data of the non-thickness patch, wherein the thickness can be selected according to actual requirements, and the generating direction of the thickness faces outwards. Generally, according to the material of the 3d printing process, the design thickness is 1mm to 3mm, and the mechanical requirements of the part of the protector on the wrist can be met, and the model is shown in fig. 5.
And S300, carrying out grid division on the entity model, and carrying out hollow-out treatment according to the divided grid distribution.
And dividing the entity model obtained by external expansion or expansion into tetrahedral mesh combinations with equal size by using reverse software or finite element processing software, and dividing the surface of the entity model into parameterization units of triangular patches with equal size.
Specifically, the data (patch data) obtained as shown in fig. 3 is subjected to meshing remesh (another mesh is generated from one input mesh). Reverse software such as geologic, 3matic, rhono, etc. and finite element preprocessing software are all associated with logic processing. The step can divide the model into tetrahedrons with equal size and combine the tetrahedrons, and the surface of the model is formed by combining triangles with equal size, which is shown in figure 6. The size of the divided grid can be parameterized. The step aims to divide the surface of the model into units with equal size for distributing the hollow-out patterns.
From the above, mesh division is obtained on the outer surface of the model or the mesh data, and each mesh can be suitable for the design and generation of a hollow pattern. The grid division is to process the original grid data into grid data on each grid, wherein a hollow pattern can be placed on each grid.
Further, performing unit distribution on the divided tetrahedral mesh combination by using a preset hollow pattern; namely, the hollow patterns are correspondingly arranged on each tetrahedron. The purpose of the hollowed-out image is to carry out light-weight processing on the solid model of the software, and the light weight of the produced protective tool is facilitated.
Based on the position location of the hollow pattern on the solid model, namely the three-dimensional model, the light Boolean operation can be realized.
And performing Boolean operation on the hollowed-out pattern and the three-dimensional model to obtain the hollowed-out three-dimensional model.
Specifically, the hollow pattern is used for forming a boolean stretching body, and an axis of the boolean stretching body is parallel to a normal average line of the triangular patch, so that the hollow pattern is perpendicular to the surface of the three-dimensional model, as shown in fig. 7.
For example, if the hollow pattern is circular, the cylindrical shape is obtained by boolean operation, and the axis of the cylindrical shape passes through the intersection point of the triangular patch and is parallel to the normal average line of the triangular patch, so that the cylindrical shape is perpendicular to the surface of the model. Simultaneously the cylinder is completely through to pass through the model, and the length of cylinder is greater than the thickness and the position of protective equipment model and runs through promptly. The logic may be implemented with a Mesh Based Pattern module in Materialise 3-matic, with a cylindrical position Pattern object. The diameter size of cylinder can be adjusted according to the fretwork degree demand, is generally not more than the length of side of triangle facet. As shown in fig. 8, the obtained uniform-thickness solid model is subtracted from the cylindrical solid through boolean operation to obtain regular protector parts, so that the structural requirements of protector products are met, and meanwhile, the protector is light in weight and has the advantages of ventilation and material saving. And outputting stl format.
Of course, in other embodiments, the hollow pattern may be a pentagon, a triangle, etc., or other personalized patterns.
And S400, taking the processed entity model as data reference for 3D printing to realize 3D printing of the wrist fixing protector.
And outputting stl data of the entity model obtained after Boolean operation, and performing 3D printing on the stl data to obtain a real article product of the protector.
According to the invention, the protection model of the software copying wrist is realized through a plurality of steps of scanning data acquisition, scanning model preprocessing, entity model generation range selection, thickness entity model generation, grid division, hollow pattern design, Boolean operation and printing, and the manufactured protection tool is convenient to wear and has good wearing and fixing effects according to the protection tool of a user during model design. Can realize the individualized design and the formation of protective equipment, to its fretwork lightweight design in addition, it is light to breathe freely more.
The invention also provides a wrist fixing protector which is manufactured by the manufacturing method provided by the invention. The fixed protective equipment of wrist includes the protective equipment body with wrist, arm looks adaptation, be equipped with the fretwork portion of regular distribution on the protective equipment body.
The invention also provides a system for manufacturing the wrist fixing protector, which comprises a computer readable storage medium for executing the method for manufacturing the wrist fixing protector.
The computer readable storage medium may be a usb disk, a removable hard disk, a Read-Only Memory (ROM), a magnetic disk or an optical disk, and various computer readable storage media capable of storing program codes.
Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative. For example, the division of each unit is only one logic function division, and there may be another division manner in actual implementation. For example, various elements or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented.
The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs. The units in the device of the embodiment of the invention can be merged, divided and deleted according to actual needs. In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a storage medium. Based on this understanding, the technical solution of the present invention may be substantially or partially contributed to by the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer).
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A manufacturing method of a wrist fixing protector is characterized by comprising the following steps:
selecting a coverage range according to three-dimensional data obtained by scanning a hand to obtain patch data;
designing a face-to-solid model according to the patch data, so that the thickness of the solid model is outwards produced;
carrying out mesh division on the entity model, and carrying out hollow-out treatment according to the divided mesh distribution;
and taking the processed solid model as data reference for 3D printing to realize 3D printing of the wrist fixing protector.
2. The method of making a wrist immobilization brace of claim 1 wherein the three dimensional data obtained from a hand scan comprises:
scanning the hand to obtain scanning data, processing the scanning data, and performing external expansion or expansion by using the scanning data to obtain a three-dimensional model, wherein the internal surface area of the three-dimensional model is larger than the external surface area of the hand.
3. The method of making a wrist immobilization brace of claim 2 wherein said meshing said solid model comprises:
and dividing the three-dimensional model obtained by external expansion or expansion into tetrahedral mesh combinations with equal size by using reverse software or finite element processing software, and dividing the surface of the three-dimensional model into parameterization units of triangular patches with equal size.
4. The method of making a wrist immobilization brace according to claim 3 wherein said hollowing out according to the divided grid distribution comprises:
performing unit distribution on the divided tetrahedral mesh combination by using a preset hollowed pattern;
and performing Boolean operation on the hollowed-out pattern and the three-dimensional model to obtain the hollowed-out three-dimensional model.
5. The method of making a wrist immobilization brace of claim 4 wherein said distributing predetermined cut-out patterns of elements over said divided tetrahedral mesh assembly comprises:
the hollow pattern is used for forming a Boolean stretching body, and the axis of the Boolean stretching body is parallel to the normal average line of the triangular patch, so that the hollow pattern is perpendicular to the surface of the three-dimensional model.
6. The method of making a wrist immobilization brace of claim 1 wherein the selecting of coverage from three dimensional data obtained from a hand scan further comprises:
selecting line and plane data displayed by three-dimensional data obtained by hand scanning, wherein a gap is reserved on the inner side of the selected curved wrist; and the selected line surface data is used for determining the coverage range of the wrist fixing protector.
7. A system for manufacturing wrist immobilization braces, comprising a computer readable storage medium for carrying out the method of manufacturing wrist immobilization braces according to any of claims 1 to 6.
8. The utility model provides a protective equipment is fixed to wrist which characterized in that includes the protective equipment body with wrist, arm looks adaptation, be equipped with regularly distributed's fretwork portion on the protective equipment body.
9. The wrist immobilization brace of claim 8 wherein the wrist immobilization brace is manufactured by the manufacturing method of any one of claims 1 to 6.
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| CN202011325497.6A CN112545733B (en) | 2020-11-24 | 2020-11-24 | Manufacturing method and system of wrist fixing protector and protector |
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| CN202011325497.6A CN112545733B (en) | 2020-11-24 | 2020-11-24 | Manufacturing method and system of wrist fixing protector and protector |
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| CN112545733A true CN112545733A (en) | 2021-03-26 |
| CN112545733B CN112545733B (en) | 2023-03-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113693796A (en) * | 2021-05-14 | 2021-11-26 | 北京工业大学 | 3D prints artificial limb connecting piece |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106650085A (en) * | 2016-12-20 | 2017-05-10 | 清华大学 | Finite element mesh-based method for generating hollow model by entity model |
| CN110115652A (en) * | 2019-06-24 | 2019-08-13 | 西安增材制造国家研究院有限公司 | A kind of 3 D-printing protector and its Method of printing |
| CN111265355A (en) * | 2020-01-19 | 2020-06-12 | 东莞市虎门医院 | Preparation method of customized 3D printing breathable forearm fixing brace |
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2020
- 2020-11-24 CN CN202011325497.6A patent/CN112545733B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106650085A (en) * | 2016-12-20 | 2017-05-10 | 清华大学 | Finite element mesh-based method for generating hollow model by entity model |
| CN110115652A (en) * | 2019-06-24 | 2019-08-13 | 西安增材制造国家研究院有限公司 | A kind of 3 D-printing protector and its Method of printing |
| CN111265355A (en) * | 2020-01-19 | 2020-06-12 | 东莞市虎门医院 | Preparation method of customized 3D printing breathable forearm fixing brace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113693796A (en) * | 2021-05-14 | 2021-11-26 | 北京工业大学 | 3D prints artificial limb connecting piece |
| CN113693796B (en) * | 2021-05-14 | 2024-06-07 | 北京工业大学 | 3D prints artificial limb connecting piece |
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| CN112545733B (en) | 2023-03-10 |
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