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Simulation lumbar vertebra model for training low-age orthopedist to find optimal screw feeding point of lumbar pedicle screw and manufacturing method

A technology of lumbar pedicle and screw entry point, which is applied in the field of simulated lumbar spine model and production, can solve the problems of reducing the difficulty of simulated surgery and simulation, and achieve the effect of great promotion and application value, low hardware equipment requirements, and cost saving

Active Publication Date: 2021-01-05
ZIGONG NO 4 PEOPLES HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, most of the simulated surgery models in the past only consisted of bones without soft tissue covering, which greatly reduced the difficulty and simulation of simulated surgery.

Method used

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  • Simulation lumbar vertebra model for training low-age orthopedist to find optimal screw feeding point of lumbar pedicle screw and manufacturing method
  • Simulation lumbar vertebra model for training low-age orthopedist to find optimal screw feeding point of lumbar pedicle screw and manufacturing method
  • Simulation lumbar vertebra model for training low-age orthopedist to find optimal screw feeding point of lumbar pedicle screw and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] A 3D-printed simulated lumbar spine model for training junior orthopedic surgeons to find the best entry point for lumbar pedicle screws, including skin, muscles and lumbar bones. The lumbar bones are wrapped with vermilion plasticine to simulate human muscles and shaped into adults Finally, it is wrapped with flesh-colored leather to simulate human skin, and a highly simulated human lumbar model is constructed; the lumbar skeleton is equipped with the best channel, the best nail entry point, and alternative channels in the pedicle projection area. Alternative screw entry points, the best entry point is set at the intersection of the best channel and the superior articular process cortex of the vertebral body, connecting with the best channel; the alternative channels are set in parallel around the best channel, covering the pedicle projection area ; The alternative nail entry point is set at the intersection of each alternative channel with the articular process of the ...

Embodiment 2

[0079] The 3D printed simulated lumbar spine model is used to train junior orthopedic surgeons to find the best point for lumbar pedicle screw placement. The specific steps are as follows:

[0080] (1) Collect normal lumbar CT DICOM data, CT scanning conditions: 128-slice spiral CT (Siemens, Germany), voltage 120kV, current 182.25mAs, slice thickness 0.625mm, matrix 512×512 pixels, scan slice thickness 0.625mm.

[0081] (2) Establish a 3D lumbar spine three-dimensional model in the three-dimensional reconstruction software: in order to import the normal lumbar spine DICOM data into Mimics19.0 (Materialise Company, Belgium) software, select the minimum threshold value of 150 through the "threshold selection tool" to obtain the lumbar spine Raw mask. Separate the lumbar spine mask to generate a new mask by "segmenting the mask", select the software's default best quality for 3D reconstruction, and obtain a 3D lumbar spine 3D model, such as figure 1 shown.

[0082] (3) The bes...

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Abstract

The invention relates to a 3D printing simulation lumbar vertebra model for training a low-age orthopedist to find an optimal screw feeding point of a lumbar pedicle screw and a manufacturing method;the model comprises skin, muscles and a lumbar vertebra skeleton, and the lumbar vertebra skeleton is provided with an optimal channel, an optimal screw feeding point, alternative channels and alternative screw feeding points in a pedicle projection area; the optimal screw feeding point is arranged at the intersection of the optimal channel and the zygopophysis cortex on the vertebral body and isconnected with the optimal channel; the alternative channels are arranged around the optimal channel in parallel and cover the vertebral pedicle projection area; and the alternative screw feeding points are arranged at the intersections of the alternative channels and the vertebral zygopophysis, vertebral lamina or transverse process cortex, and are connected with the corresponding alternative channels. According to the invention, the culture curve of a low-age orthopedist is shortened, the culture efficiency is improved; meanwhile, the model is high in simulation degree and strong in repeatable operability.

Description

technical field [0001] The invention belongs to the technical field of spinal surgery medical devices, and in particular relates to a simulated lumbar model and a manufacturing method for training junior orthopedic surgeons to find the best entry point for lumbar pedicle screws. Background technique [0002] Lumbar pedicle screw placement is often used in lumbar fractures, degenerative diseases, tuberculosis, tumors and other diseases to reconstruct the three-dimensional structure of the lumbar spine. This technique is an operating technique that spine surgeons must master. However, the risk of lumbar pedicle screw placement is high, and the failure of screw placement can lead to serious consequences of vascular and nerve damage. The traditional training method has a long learning curve, low efficiency, few specimens, and extremely limited opportunities for operation, which greatly hinders junior orthopedic surgeons from learning and mastering this technique. [0003] The m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/28
CPCG09B23/285
Inventor 袁德超吴超邓佳燕
Owner ZIGONG NO 4 PEOPLES HOSPITAL
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