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Design method of personalized 3D printing scoliosis orthosis

A scoliosis, 3D printing technology, applied in medical science, additive processing, etc., can solve problems such as decreased user compliance, high production requirements, and dependence on correction effects, to reduce hollow or tightened parts, and design accuracy. Improve and improve the effect of wearing comfort

Active Publication Date: 2020-06-12
国家康复辅具研究中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This production method requires manual shaping to achieve spinal correction, so that the correction effect often depends on the experience of the technician, and there are problems of time-consuming and laborious
In addition, due to the limitations of the design and manufacturing process, the orthosis also has the problem of poor air permeability, which will affect the breathing of the user after wearing it, resulting in a decrease in the user's compliance, and on the other hand reduces the performance of the orthosis. The therapeutic effect of
Therefore, the existing design methods for scoliosis orthoses have the problems of high production requirements, uneven orthopedic effects and poor comfort

Method used

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  • Design method of personalized 3D printing scoliosis orthosis
  • Design method of personalized 3D printing scoliosis orthosis
  • Design method of personalized 3D printing scoliosis orthosis

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Example 1. A method for designing a personalized 3D printed scoliosis orthosis, comprising the following steps:

[0042] ① Obtain the CT tomographic image data of scoliosis patients, and complete the three-dimensional modeling, obtain the patient's scoliosis spine three-dimensional geometric model and soft tissue three-dimensional geometric model, and obtain A spine model and B soft tissue model;

[0043] ② Draw the cross-sectional contour curve of the orthosis based on the two-dimensional cross-sectional contour curve of the torso of the scoliosis patient, and obtain the C cross-sectional contour curve;

[0044] ③ Perform lofting operation on the profile curve of the C section to obtain the surface model of the D orthosis;

[0045] ④ Stretch the D orthosis surface model outward to obtain the E orthosis model;

[0046] ⑤Based on the bone reconstruction theory, the density distribution of the E orthosis model was optimized by the finite element method, and the density di...

Embodiment 2

[0060] Example 2. A specific design method for a personalized 3D printed scoliosis orthosis, the design process is as follows figure 1 shown, including the following steps:

[0061] ① Obtain CT tomographic image data of scoliosis patients and complete 3D modeling. The specific method is to perform CT scanning on the patient's trunk. The slice thickness of the CT scan is set to 0.63mm, and the resolution is 0.39mm*0.39mm. The size of the image is 512*512 pixels; then the scanned data is imported into medical image processing software such as Mimics, and the vertebrae, ribs, sternum, pelvis and soft tissues on each CT slice are segmented by manual segmentation, and then volume rendering is used Methods The three-dimensional geometric model of the patient's scoliotic spine and the three-dimensional geometric model of the soft tissue were reconstructed, and the A spine model and the B soft tissue model were obtained. The structure of the A spine model was as follows: image 3 As...

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Abstract

The invention discloses a design method of a personalized 3D printing scoliosis orthosis. The method comprises the following steps: acquiring the scoliosis spine of a patient, performing three-dimensional modeling to obtain a scoliosis spine model and a soft tissue model, and drawing a cross section profile curve of an orthosis based on the two-dimensional cross section profile curve of the trunkof the patient; carrying out lofting operation and outward stretching on the cross section profile curve to obtain an orthosis model; carrying out density distribution optimization on the orthosis model to obtain an orthosis density distribution diagram; carrying out weight reduction design and back opening on the orthosis model based on the orthosis density distribution diagram to obtain an orthosis model; and finally importing the orthosis model, the spine model and the soft tissue model into finite element software together, carrying out finite element biomechanical simulation evaluation, redrawing the orthosis model with poor evaluation, and taking the H orthosis model with good evaluation as a final model. The method has the advantages of being low in manufacturing requirement, high in consistency of the orthopedic effect and good in comfort.

Description

technical field [0001] The invention relates to a design method of a scoliosis orthosis, in particular to a design method of a personalized 3D printing scoliosis orthosis. Background technique [0002] Scoliosis is a common spinal deformity disease, which clinically manifests as lateral curvature of the spine on the coronal plane, often accompanied by abnormality in the sagittal plane and axial rotational deformity. The International Scoliosis Society stipulates that in the coronal plane, a Cobb angle greater than 10 degrees can be identified as scoliosis. Currently, the treatment methods for treating scoliosis are mainly divided into observation, orthotic treatment and surgical treatment. Among them, the observation method is mainly used for patients with mild scoliosis (Cobb angle < 20 degrees), the orthotic treatment is mainly used for mild and moderate scoliosis patients (Cobb angle is 20 degrees to 45 degrees), and the surgical treatment is mainly used It is used f...

Claims

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Application Information

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IPC IPC(8): A61F5/01B33Y50/00B33Y80/00B33Y10/00
CPCA61F5/01B33Y10/00B33Y50/00B33Y80/00
Inventor 张明峥樊瑜波莫中军任韦燕郭俊超储照伟
Owner 国家康复辅具研究中心
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