Production method of navigation template for positioning the pediculus arcus vertebrae

A technology of navigation templates and production methods, applied in special data processing applications, medical science, instruments, etc., can solve problems such as great difficulties and unimaginable consequences, and achieve the effect of reducing pain, reducing waste of resources, and reducing operation time
CN101390773AInactive Publication Date: 2009-03-25陆声
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
陆声
Publication Date
2009-03-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for fabricating a navigation templet used in pedicle positioning, including the following steps: firstly, collecting the original data and building up a three-dimensional vertebra model; wherein focusing on the location of a pedicle (1); then, conducting three-dimensional analysis to a screw entry passage of the pedicle and building up a virtual screw entry templet(3) which includes the screw entry passage(2); wherein the screw entry templet(3) is a reverse navigation templet which matches with the outline of the rear part of a vertebral lamina; and then, fabricating the reverse navigation templet through quick molding technique. The increases of CT or MRI scanning velocity and precision provide a precise sectional image for acquiring a three-dimensional model in reverse engineering, and the necessary organs can be quickly reconstructed through a three-dimensional reconstruction software and can be transformed and bored freely on the virtual model so as to figure out an optimal pedicle screw entry route. On the basis of the virtual model, the pedicle screw entry direction and depth can be guided by using the reverse navigation templet fabricated through quick molding technique during an operation so as to quickly and accurately finish the operation.
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Description

technical field

[0001] The invention relates to a method for making a positioning and navigation template for surgery, in particular to a method for making a navigation template that can be used for pedicle positioning. 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 navi...

Claims

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