Method for light weight of 3D printing personalized external fixed supporting tool based on topology optimization

A topology optimization and 3D printing technology, applied in 3D modeling, design optimization/simulation, image data processing, etc., can solve the problems of difficult strength characteristics, poor air permeability and wearing comfort, low degree of automation, etc., and meet the requirements of hardware equipment Low, ensure stiffness and strength, overcome time-consuming effects

Inactive Publication Date: 2018-09-04
AFFILIATED HOSPITAL OF GUANGDONG MEDICAL UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Despite this, there are still various problems in the actual clinical application of traditional braces: traditional braces take a long time to manufacture, and the manufacturing process requires high technical requirements such as impression taking, measurement, and shaping, which often delays the process of orthopedic treatment for patients; Labor costs account for most of the proportion, the degree of automation is low, and the fineness and matching degree of manual production by personnel are often unsat

Method used

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  • Method for light weight of 3D printing personalized external fixed supporting tool based on topology optimization
  • Method for light weight of 3D printing personalized external fixed supporting tool based on topology optimization
  • Method for light weight of 3D printing personalized external fixed supporting tool based on topology optimization

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Embodiment 1

[0055] The lightweight method of 3D printing personalized external fixation brace based on topology optimization, such as figure 1 shown, including the following steps:

[0056] Step 1, scan the body of the subject to obtain data;

[0057] Step 2, import the data obtained in step 1 into the software, perform image segmentation and three-dimensional construction of the model to obtain a three-dimensional shell model of the limb surface;

[0058] In step 3, the three-dimensional shell-shaped model of the limb surface obtained in step 2 is subjected to model surface modification processing, and a curved surface sheet of the outer contour of the limb is constructed, and imported into computer-aided design software to convert it into a shell-shaped curved surface model;

[0059] Step 4, import the above-mentioned three-shell surface model into the finite element analysis software, define limited parameters, perform grid division of the brace model, submit it to the finite element ...

Embodiment 2

[0091] Based on the lightweight method of 3D printing personalized external fixation brace based on topology optimization, the present invention is described with a specific clinically common personalized design of external fixation brace after Achilles tendon injury repair, and the specific implementation steps are as follows:

[0092] Step 1, limb surface contour data acquisition and 3D reconstruction:

[0093]The data of the affected lower limb of the subject is collected by computerized tomography (CT) equipment, and the scanned data must completely cover the range of limbs to be fixed by the external fixation brace.

[0094] Step two, 3D reconstruction:

[0095] The obtained tomographic images are imported into 3D reconstruction software in DICOM data format for image segmentation processing, such as figure 2 As shown in , a three-dimensional model of the outer contour of the limb on the injured side of the Achilles tendon was established.

[0096] Step 3, surface trea...

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Abstract

The invention relates to a method for light weight of a 3D printing personalized external fixed supporting tool based on topology optimization. The method comprises the following steps of: step 1, scanning the limbs of an object to obtain data. Step 2, carrying out image segmentation and three-dimensional construction of the model to obtain a three-dimensional shell-like model of the surface of the limbs. Steps 3, carrying out surface modification treatment to construct a curved surface sheet of the outer contour of the limbs, and being imported to the computer-aided design software and beingtransformed to a shell-shaped curved surface model. Step 4, obtaining the initial finite element analysis result by using a finite element analysis software. Step 5, an iterative operation is designedon the basis of the optimization design of the sensitive algorithm. And finally, performing 3D printing to obtain the personalized external fixed supporting branch. The method combines the 3D printing technology to realize the optimized design and manufacture of the personalized external fixed supporting tool, not only can guarantee the effect of external fixation treatment of the supporting tool, meanwhile, the light weight design obviously improves the wearing comfort of the supporting tool, and can effectively reduce the medical cost.

Description

technical field [0001] The invention relates to the technical field of personalized limb orthopedic rehabilitation medical equipment, in particular to a lightweight method for 3D printing personalized external fixation braces based on topology optimization. Background technique [0002] Clinically, congenital developmental deformities of limbs, joints and spine often occur in children and adolescents, and their etiology and morphological manifestations are often complex and changeable, showing highly individual characteristics. In addition, the sequelae of trauma or nervous system injury often lead to secondary anatomical and morphological changes of the limbs, and the pathological features also have significant individual characteristics of the patient. If such congenital and acquired limb shape abnormalities cannot be corrected and treated in a timely manner, they will lead to permanent and irreversible pathological changes in the limbs and trunk, which will affect the wei...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06T17/00G06T19/20
CPCG06T17/00G06T19/20G06F30/23
Inventor 钟环欧阳汉斌魏波黄文华余斌杨洋陈海聪
Owner AFFILIATED HOSPITAL OF GUANGDONG MEDICAL UNIV
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