Method for manufacturing personalized thoracolumbar spine sagittal curvature die bar

A production method, thoracolumbar technology, applied in computer-aided planning/modeling, medical science, internal bone synthesis, etc., can solve problems such as unsatisfactory sagittal curvature recovery, lack of objectivity, and prolonged operation time, and achieve reduction Surgical costs, reduced surgical risks, low doctor requirements

Active Publication Date: 2016-12-21
ZIGONG NO 4 PEOPLES HOSPITAL +1
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AI Technical Summary

Problems solved by technology

[0004] At present, the commonly used posterior spinal internal fixation device is the GSS pedicle screw system. After the screw is locked, its tail is perpendicular to the connecting rod, so the sagittal curvature of the fixed segment can be adjusted through the radian of the connecting rod, but in actual clinical operatio

Method used

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Examples

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Embodiment 1

[0032] In order to restore the fractured vertebral height and sequence better individualized during the operation, the normal vertebral height and sagittal curvature of the segment to be fixed were obtained by the simulated operation function of the Mimics software (Materialise, Switzerland) before the operation, and the screw placement was simulated. And planning the operation, the specific steps of making the personalized sagittal curvature mold stick are as follows:

[0033] (1) Perform a 64-slice spiral CT scan on the patient's thoracolumbar spine to obtain DICOM data:

[0034] Before operation, patients underwent 64-slice spiral CT scanning examination, with a slice thickness of 0.625mm and a matrix of 512??512. Mimics 14.11 software was used to import the original Dicom format data.

[0035] (2) Establishment and measurement of 3D model:

[0036] First, select the threshold selection tool (Thresholding) to obtain the original mask of the thoracolumbar spine to be fixed;...

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Abstract

The invention relates to a method for manufacturing a personalized thoracolumbar spine sagittal curvature die bar. The method for manufacturing the sagittal curvature die bar comprises the steps of utilizing computer software to reestablish a three-dimensional model of a to-be-fixed segment thoracolumbar spine based on medical images; performing simulation restoration on the three-dimensional model; manufacturing a personalized sagittal curvature die bar stl file in the computer software according to thoracolumbar spine sagittal curvature after restoration; and finally manufacturing the personalized thoracolumbar spine sagittal curvature die bar by utilizing a 3D printing or other quick forming method. The sagittal curvature die bar is a personalized auxiliary operation tool. On the die bar, a pedicle screw is designed additionally to distract or pressurize mark points to restore centrum and intervertebral space heights while the sagittal curvature is restored in a personalized mode, the subjectivity and blindness of a pre-bending connecting bar during an operation are avoided, and C type arm perspective times during the operation are reduced. The method is suitable for various conditions such as thoracolumbar spine fracture, spondylolysis and lumbar vertebrae intervertebral dis protrusion. The method is simple and convenient to operate, the requirements for doctors are low, the operation risk is reduced, the operation efficiency is improved, and the operation cost is reduced.

Description

technical field [0001] The invention relates to the field of computer-aided technology and medical equipment, in particular to a method for making a personalized thoracolumbar sagittal curvature mold stick. Background technique [0002] Thoracolumbar fractures refer to the destruction of the continuity of the thoracolumbar spine due to external force. This is the most common spinal injury. Among young and middle-aged patients, high-energy injuries, such as car accidents and falls from heights, are the main cause of injury. Due to the existence of osteoporosis in elderly patients, the injury factors are mostly low-violence injuries, such as slips and falls. Patients with thoracolumbar fractures are often associated with neurological impairment, and because the injury factor is basically high-energy injury, they are often associated with other organ injuries, which brings great difficulties and challenges to treatment. [0003] Spinal fractures, spondylolisthesis, and her...

Claims

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Application Information

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IPC IPC(8): A61B34/10A61B17/70
CPCA61B17/70A61B2017/00526
Inventor 吴超
Owner ZIGONG NO 4 PEOPLES HOSPITAL
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