Navigation template capable of being used for positioning vertebral pedicle

A navigation template and pedicle technology, applied in medical science, surgery, etc., can solve problems such as unimaginable consequences and great difficulties, and achieve the effect of reducing pain, reducing resource waste, and reducing operation time

Inactive Publication Date: 2011-01-26
陆声
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the application of this technology to pedicle fixation. In addition, in pedicle fixation, even if the patient's pedicle model is made with the above-mentioned technology before operation, and the direction of screw insertion is determined. In the simulation test with the depth, due to the change of the patient's position during the operation, it is very difficult to accurately find the original simulated screw insertion direction and insert the pedicle screw. Once there is an error, the consequences will be disastrous

Method used

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  • Navigation template capable of being used for positioning vertebral pedicle
  • Navigation template capable of being used for positioning vertebral pedicle
  • Navigation template capable of being used for positioning vertebral pedicle

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1. Raw data collection: Before the operation, a thin-section CT scan is performed on the vertebrae in the surgical area of ​​the patient, and the raw CT data are collected.

[0016] 2. Establishment of the 3D model of the vertebrae: import CT continuous tomographic image data into the 3D reconstruction software, firstly extract the vertebral boundary contour information area by gray-scale segmentation, and then apply the area segmentation to extract the vertebral information area again, adopt the default optimal reconstruction mode of the system, and establish The 3D reconstruction of the vertebral body model can be exported in STL format. Use single vertebral body reconstruction for the vertebral body that needs to be positioned, as shown in the attached figure 1 , where pedicle 1 is the site that needs to be focused on.

[0017] 3. Three-dimensional analysis of the pedicle screwing channel: Open the three-dimensional reconstruction model on the UG Imageware12.0 platf...

Embodiment 2

[0023] 1. Raw data collection: Before the operation, a thin-section CT scan is performed on the vertebrae in the surgical area of ​​the patient, and the raw CT data are collected.

[0024] 2. Establishment of the 3D model of the vertebrae: import CT continuous tomographic image data into the 3D reconstruction software, firstly extract the vertebral boundary contour information area by gray-scale segmentation, and then apply the area segmentation to extract the vertebral information area again, adopt the default optimal reconstruction mode of the system, and establish The 3D reconstruction of the vertebral body model can be exported in STL format. A single vertebral body reconstruction is used for the vertebral body that needs to be positioned.

[0025] 3. Establishment of the physical model of the vertebrae: use laser rapid prototyping technology to establish the physical model of the vertebral body based on the three-dimensionally reconstructed vertebral body model on the com...

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Abstract

The invention discloses a navigation template capable of being used for positioning vertebral pedicle. A manufacture method of the navigation template comprises the following steps of: firstly, acquiring original data and establishing a three-dimensional vertebra model on a computer; secondly, carrying out three-dimensional analysis on a vertebral pedicle needle-entering channel, extracting an outline of the rear part of a vertebral plate, establishing a virtual reverse template coincide to the outline at the rear part of the vertebral plate in a system; thirdly, fitting the virtual reverse template with the vertebral pedicle needle-entering channel, establishing a virtual needle-entering template; and fourthly, manufacturing the needle-entering template by using a quick forming technology, wherein the needle-entering template is a reverse navigation template coincide to the outline of the rear part of the vertebral plate. The invention organically integrates a digital technology, reverse engineering and the quick forming technology, thereby achieving the purpose of rapidly, cheaply and efficiently accurately positioning the vertebral pedicle.

Description

technical field [0001] The invention relates to a manufacturing method of a navigation template that can be used for pedicle positioning, and a navigation template that can be used for pedicle positioning made by the method. Background technique [0002] In orthopedic operations such as spinal trauma reduction and deformity correction, it is generally believed that internal fixation with pedicle screws is the most stable spinal fixation method. However, since the diameter of the pedicles of the thoracic and cervical spine gradually decreases from the lumbar spine up, the difficulty and risk of pedicle screw fixation gradually increase, and mistakes may cause great damage. The pedicle technology of the thoracic and cervical spine Difficult to popularize clinically. [0003] Therefore, people began to look for a spinal navigation system capable of accurate positioning, so as to accurately locate the pedicle and ensure the smooth progress of the operation. The use of computer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/90
CPCA61B17/1757A61B2017/568
Inventor 陆声
Owner 陆声
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