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Cutting finishing method based on STL defect model

A model and three-dimensional model technology, applied in the field of cutting and trimming based on STL defect models, can solve problems such as broken contours of bone defect STL models, inability to print out physical models, irregular triangular meshes, etc., achieving easy success, simple operation, The effect of improving work efficiency

Inactive Publication Date: 2016-11-09
SHANGHAI UNIV
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Problems solved by technology

[0003] However, broken and irregular triangular meshes often appear in the outline of the bone defect STL model, and the existing bio-3D printing cannot print a physical model that fits this defect.

Method used

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  • Cutting finishing method based on STL defect model
  • Cutting finishing method based on STL defect model
  • Cutting finishing method based on STL defect model

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Embodiment Construction

[0034] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to describe the technical solution of the present invention in detail.

[0035] The cutting and trimming method based on the STL defect model of the present invention comprises the following steps:

[0036] Step 1, read in the CT data of the defect bone model

[0037] CT data is stored in DICOM format, and DICOM files are specifically composed of file headers and data sets. Using MITK (Medical Imaging ToolKit, medical imaging development kit) to realize the reading and writing of CT data. In MITK, the read and write operations of image files are packaged modularly, and a simple interface is provided for users, which is convenient for users to use. The classes customized in MITK to complete the reading and writing functions of DICOM files are mitkDICOMReader and mitkDICOMWriter, which mainly extract the data structure and algorithm for realizing the reading ...

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Abstract

The invention provides a cutting finishing method based on an STL defect model. The method comprises the following steps: step one, reading CT data of a defective bone model; step two, performing three-dimensional reconstruction on the CT data; and step three, performing VTK-based three-dimensional model cutting finishing. The method can be applied to providing an STL model of defect shape rules and is applied to manufacturing a biological 3D printing bone defect restoration body.

Description

technical field [0001] The patent of the present invention relates to a cutting and trimming method based on STL (short for stereolithography, stereolithography) defect model, which can be used to provide STL models with regular defect shapes for the manufacture of bio-3D printed bone defect restorations. Background technique [0002] Due to natural disasters, traffic accidents and other factors, many patients with bone defects are suffering in the world every year, and they urgently need bone tissue repair to improve their quality of life. With the development of medical image processing system and rapid prototyping technology, the method of combining medical image processing technology with rapid prototyping technology for bone defect repair is more and more used by medical workers. That is, CT image tomography is firstly performed on the tissue near the patient's defect, and then the three-dimensional model of the patient's defect is reconstructed by using the medical ima...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T19/20G06T17/00
CPCG06T19/20G06T17/00G06T2219/016
Inventor 胡庆夕孙振林谢明亮刘媛媛鲁小保蒋维健
Owner SHANGHAI UNIV
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