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Thoracolumbar spine burst fracture simulation model building method and device

A technology of vertebral bursting and simulation models, applied in medical simulation, instruments, medical informatics, etc., can solve problems such as limitations, difficulty in obtaining specimens, and difficulty in truly reflecting the relationship between bone tissue and soft tissue around the fracture block, achieving high simulation , strong clinical applicability, and reasonable geometric properties

Pending Publication Date: 2020-06-09
SHANGHAI TONGJI HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: the experimental method is relatively expensive, the specimens are difficult to obtain, there are certain differences among the specimens, and the repeatability is poor. restricted
[0009] However, the above-mentioned literature lacks the steps of finely simulating space-occupying fractures in the spinal canal. The fracture is simply simulated by modifying the height of the vertebral body. It is difficult to truly reflect the relationship between the fracture and the surrounding bone tissue and soft tissue, and it is impossible to further study the reduction of the fracture. waiting for surgery

Method used

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  • Thoracolumbar spine burst fracture simulation model building method and device
  • Thoracolumbar spine burst fracture simulation model building method and device
  • Thoracolumbar spine burst fracture simulation model building method and device

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Experimental program
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Effect test

Embodiment 1

[0058] See figure 1 , figure 1 It is a flowchart of a method for establishing a simulation model of a thoracolumbar burst fracture disclosed in Embodiment 1. The method includes the following steps:

[0059] Step S1: Screen the thoracolumbar segments of healthy adult volunteers for CT scanning to obtain DICOM data.

[0060] Step S2: Import the data into the three-dimensional modeling software MIMICS to reconstruct the three-dimensional solid model of the thoracic and lumbar spine, and save it as an STL format file.

[0061] Step S3: Import the STL format file into the reverse engineering software Geomagic. According to the normal anatomical structure, according to the principle of point, line and surface, first design several curves to express the main shape features, and then encapsulate and connect to obtain a NURBS surface model, which is saved as an IGES file .

[0062] It should be noted that since the vertebral structure is mostly composed of irregular curved surface...

Embodiment 2

[0081] See Image 6 , Image 6 It is a flowchart of a method for establishing a simulation model of a thoracolumbar burst fracture disclosed in Embodiment 2. The method includes the following steps:

[0082] Step S1: Screen the thoracolumbar segments of healthy adult volunteers for CT scanning to obtain DICOM data.

[0083] Step S2: Import the data into the three-dimensional modeling software MIMICS to reconstruct the three-dimensional solid model of the thoracic and lumbar spine, and save it as an STL format file.

[0084] Step S3: Import the STL format file into the reverse engineering software Geomagic. According to the normal anatomical structure, according to the principle of point, line and surface, first design several curves to express the main shape features, and then encapsulate and connect to obtain a NURBS surface model, which is saved as an IGES file .

[0085] It should be noted that since the vertebral structure is mostly composed of irregular curved surfaces,...

Embodiment 3

[0103] The following describes the device for establishing a thoracolumbar burst fracture model provided in this embodiment, which can be referred to in correspondence with the method for establishing a thoracolumbar burst fracture model described above.

[0104] The device for establishing a thoracolumbar burst fracture model includes:

[0105] Image acquisition unit 1, used for acquiring CT scan images of thoracolumbar vertebrae;

[0106] The three-dimensional reconstruction unit 2 is used to reconstruct the three-dimensional digital image of the thoracic and lumbar spine;

[0107] The thoracic and lumbar vertebrae entity model generation unit 3 is used to convert the three-dimensional digital image into a solid model;

[0108] The vertebral finite element model generation unit 4 is used to generate a three-dimensional finite element model of the thoracolumbar vertebrae by using the thoracolumbar vertebrae entity model;

[0109] The soft tissue finite element model generat...

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Abstract

The invention relates to a thoracolumbar spine burst fracture simulation model building method and device. The method comprises the following steps: carrying out CT scanning thoracolumbar vertebrae ofa healthy adult; establishing an entity model, importing Hypermesh, segmenting a fracture block from the first lumbar vertebra, meshing the fracture block and other bone tissues, further dividing anintervertebral disc into fibrous rings and nucleus pulposus, adding ligaments, setting boundary conditions for the fracture block and peripheral bone tissues, carrying out assembling to obtain a thoracolumbar burst fracture three-dimensional finite element model, finally importing Abaqus, and setting material attributes, loads, boundary conditions and the like. The device comprises a related unitwhich is used for establishing the thoracolumbar spine burst fracture simulation model. The model established by the invention comprises vertebrae, intervertebral discs, ligaments, facet joints and other structures, and conforms to the anatomical structure of thoracolumbar vertebrae, and the fracture block model is reasonable in geometrical characteristic setting and is tightly combined with the surrounding vertebrae, so that the simulation performance is higher.

Description

technical field [0001] The invention relates to the field of computer-aided technology and spinal surgery, and more particularly, to a method and a device for establishing a simulation model of thoracolumbar burst fracture. Background technique [0002] Thoracolumbar burst fracture is a common injury disease in spine surgery, accounting for about 50% of all spine fractures. It is common in high-energy injuries such as traffic accidents and falls from a height. Patients often have kyphosis and fracture fragments protruding into the spinal canal, causing compression. Nerve root and cauda equina, causing damage to spinal nerve function. Patients may experience different degrees of sensory impairment and loss of motor function, and more severe cases can lead to paralysis, which greatly affects the patient's physical and mental health. Relieving the fracture space, restoring the volume of the spinal canal, and reducing the compression of the spinal cord have gained wide consensu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G16H50/50G16H30/20
CPCG16H50/50G16H30/20
Inventor 朱睿程黎明裴小龙程泓哲解元
Owner SHANGHAI TONGJI HOSPITAL