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
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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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