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Method for designing personalized interbody fusion cage

A technology of intervertebral fusion device and design method, which is applied in the field of personalized intervertebral fusion device design, can solve problems such as failure to achieve functional matching design, and achieve the effect of simple design method, short operation time, and easy clinical promotion

Inactive Publication Date: 2015-01-28
BEIHANG UNIV
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Problems solved by technology

At present, the design of most intervertebral fusion cages is based on geometric matching requirements, and the design based on functional matching has not been realized.

Method used

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  • Method for designing personalized interbody fusion cage
  • Method for designing personalized interbody fusion cage
  • Method for designing personalized interbody fusion cage

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Embodiment Construction

[0024] Such as figure 1 Shown is a specific implementation flow chart of the personalized intervertebral fusion cage design according to an embodiment of the present invention, including the following steps:

[0025] Step 101: Image acquisition and preprocessing.

[0026] Spiral CT scan of the vertebrae to obtain CT images of the vertebrae. Import the acquired original image data of the vertebrae into the software and automatically sort and judge the images according to the image numbers. Then the imported CT images are processed by median filtering, Gaussian filtering and binarization.

[0027] Step 102: segmentation of the vertebral body image and establishment of a three-dimensional model.

[0028] First, manually select an initial slice in the horizontal view area of ​​the software to start the segmentation process, manually draw the outline of the vertebral body of the initial slice, and then use the level set method to obtain the precise contour of the vertebral body of the ini...

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Abstract

The invention relates to a method for designing a personalized interbody fusion cage. The metod comprises the following steps of performing CT (computed tomography) scanning on a vertebral body; performing three-dimensional model reconstruction on CT continuous section image data; measuring a vertebral body model, namely measuring the sagittal diameter of the vertebral body, the transverse diameter of the vertebral body, the height of vertebrae interval and the like; performing personalized design and implantation on the interbody fusion cage on the basis of the measured parameters; meshing and smoothening; performing material assignment, boundary condition setting and the like to establish a finite element model; solving and analyzing the finite element model. The method provides a basis for the optimization and the improvement of the interbody fusion cage and the personalized interbody fusion cage is designed by considering geometric matching and function matching.

Description

Technical field [0001] The invention relates to a method for designing a personalized intervertebral fusion cage, and more specifically to a method for personalized design of the intervertebral fusion cage based on CT image three-dimensional reconstruction and measurement technology and finite element analysis technology. Background technique [0002] In clinical interbody fusion, the implantation method, size, and spatial shape of the intervertebral fusion cage are closely related to nerve damage, implant stability, and the amount of intervertebral bone graft. However, because the physiological parameters of patients and the individual characteristics of the internal environment are quite different, it is difficult to optimize the interaction between the standardized, batch, and serialized intervertebral fusion cages and the human body. Excessive wear, fatigue failure, etc. Therefore, the design of the intervertebral fusion cage must be personalized. The intervertebral fusion ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06T17/00
Inventor 李淑宇蒲放梁航张明峥李德玉樊瑜波
Owner BEIHANG UNIV
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