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Individuation minimal invasive vertebral pedicle screw entering navigation template and preparation method thereof

A pedicle screw and navigation template technology, applied in the field of medical devices, can solve the problems of expensive navigation equipment, long learning time for surgeons, and difficulties in clinical popularization, and achieve minimally invasiveness, reduce hospital costs, prevent slippage and deformation effect

Inactive Publication Date: 2015-05-27
苏州昕健医疗技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the navigation equipment is expensive, the operation is relatively complicated, and it takes a long time for the operator to learn, so there are still difficulties in clinical popularization

Method used

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  • Individuation minimal invasive vertebral pedicle screw entering navigation template and preparation method thereof
  • Individuation minimal invasive vertebral pedicle screw entering navigation template and preparation method thereof
  • Individuation minimal invasive vertebral pedicle screw entering navigation template and preparation method thereof

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Embodiment 1

[0035] figure 1 A flow chart of a design method of a personalized minimally invasive pedicle screw entry navigation template disclosed in the present invention is shown.

[0036] The specific implementation steps of the personalized minimally invasive bilateral pedicle screw insertion navigation template are as follows:

[0037] Step 1. Acquisition of medical image data of the target vertebral body: Before the operation, collect CT data or MRI data of the vertebrae in the operation area of ​​the patient, and save the data in DICOM or other recognizable formats.

[0038] Step 2, 3D reconstruction of the vertebrae: Import the 2D medical image data into the medical image processing software, use filtering, noise reduction and other means to preprocess the 2D image, and then set the gray threshold according to the joint contour. Segment the corresponding selected area on the coronal plane and sagittal plane, reconstruct the three-dimensional model of the vertebra, and save it as an...

Embodiment 2

[0043] See Image 6 , as shown in the figure, schematic diagram of reconstructed 3D model of spondylolisthesis and pedicle fracture. In the case of spondylolisthesis or pedicle fracture, the pedicle plate cannot be used for positioning, and the bilateral navigation template described in Example 1 cannot be used to navigate the pedicle screw. Therefore, the following implementation methods are adopted to design individuality. Optimized one-sided navigation template. Steps 1-3, 5 are the same as those in Embodiment 1, and will not be repeated here, and only step 4 will be described in detail.

[0044] Step 4, design of pedicle screw entry navigation template: the reconstructed vertebral model (such as Image 6 shown) into the three-dimensional computer software, and determine the position of the guide tube 201 according to the screw entry point and the anatomical long axis of the pedicle obtained from the analysis and design; select the positioning point on the lamina, design ...

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Abstract

The invention relates to an individuation minimal invasive vertebral pedicle screw entering navigation template and a preparation method of the navigation template. The preparation method of the navigation template includes: reconstituting a three-dimensional model of a target vertebra based on a medical image; conducting the screw entering porous channel virtual analysis design on the three-dimensional model and defining a screw entering porous channel; taking feature points from the three-dimensional model, designing a vertebral pedicle screw entering navigation template prototype and obtaining a navigation template which fully fits for the vertebral body through the Boolean calculation; and manufacturing the navigation template through 3D printing and other processing methods. The individuation minimal invasive vertebral pedicle screw entering navigation template closely fits for the mastoid process and the lamina arcus vertebrae, is high in stability, ensures accurate implanting of the vertebral pedicle screw, avoids direct contact with the spinous process, reduces peeling of the muscle ligament, realizes minimal invasion, is applicable to various situations such as the vertebral distortion and slipping and the rupture of the vertebral pedicle, prevents slipping and distortion during screw entering due to the arrangement of a finger pressing board, and is convenient to operate and low in the requirement for doctors, degreases the operation risk, improves the operation efficiency and reduces the operation cost further.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a personalized minimally invasive pedicle screw entry navigation template and a manufacturing method thereof. Background technique [0002] In the treatment of spondylolisthesis reduction and correction surgery, transpedicular internal positioning technique is the most reliable spinal fixation method. Because lumbar pedicle screws can play a three-dimensional fixation role, have the advantages of high mechanical strength, fewer fixation and fusion segments, and better correction of spinal deformity, their clinical application is becoming more and more extensive. [0003] However, biomechanical experiments have proved that only when the screw is placed along the anatomical long-axis channel of the pedicle and reaches the ideal depth, can the ideal clinical effect be obtained. The anatomical structure around the vertebral body of the spine is complex, the front is adjacent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/90
CPCA61B17/00234A61B2017/00526A61B2017/564A61B17/90
Inventor 不公告发明人
Owner 苏州昕健医疗技术有限公司
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