Atlantoaxial pedicle screw guide and preparation method therefor

Abstract

The invention provides an atlantoaxial pedicle screw guide and a preparation method therefor. The method is that a hospital PACS (picture archiving and communication system) system obtains atlantoaxial fracture data or CT (computed tomography) scan data of cervical dislocation of a patient; based on the data, and a 3D design and print work platform of digital visualized orthopedics is used for designing and preparing the atlantoaxial pedicle screw guide. The atlantoaxial pedicle screw guide and the preparation method therefor has the advantages of being high in accuracy, easy to operate and low in cost. Furthermore, the atlantoaxial pedicle screw guide and the preparation method therefor is capable of making complex and high-risk atlantoaxial fixation surgery accurate, safe and easy to operate under the accurate guide of the guide, surgery accuracy is greatly improved, and the risk of the surgery is reduced.

Description

technical field [0001] The invention belongs to medical materials and a preparation method, in particular to an atlantoaxial pedicle screw guide and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of the modern construction industry and the transportation industry, the incidence of cervical spine injuries has also increased significantly. Atlantoaxial compound fractures account for 3% of all cervical spine acute injuries, 43% of all atlas fractures and 16% of axis fractures. Almost all patients had a clear history of trauma. Such as traffic accidents, sports, diving, injuries from falling from heights, heavy head impacts, falls, etc., neck pain and limited mobility after injury. Due to its anatomical characteristics, the upper cervical spine is extremely unstable after the injury and the patient is in a high-risk state. It is very easy to stretch and compress the medulla oblongata or cervical cord and endanger life. ...

AI Technical Summary

Problems solved by technology

But there are the following disadvantages: ① At the patient level, shrinkage occurs during the curing process of the resin, which inevitably generates stress or causes deformation, so the precision of the manufactured guide is low

The atlantoaxial screw placement requires very high precision, and the screw placement error caused by the accuracy of the guide may cause vertebral artery injury, cervical spinal cord injury, paralysis or death in the patient; ②At the hospital level, the cost of the SLA system High, its use and maintenance costs are too high, and most domestic hospitals cannot obtain such high-priced industrial-grade manufacturing equipment. Even if the equipment is purchased, the human and economic costs of maintaining the equipment are quite high, so it cannot be promoted in domestic hospitals; At the doctor’s level, the SLA system is a precision device that operates on liquids. It has strict requirements on the working environment. The molded parts are mostly resin, with limited strength, stiffness, and heat resistance, which is not conducive to long-term storage. Therefore, in the preparation process of the guide The great challenge faced by TCM doctors

④ On the level of engineering technology, preprocessing software and driver software have a large amount of calculations, are too highly correlated with processing effects, and the operation of the software system is complicated. The preparation of the guider entity requires special personnel to operate and maintain it. Requires repeated design discussions with orthopedic surgeons, consuming a lot of time

The deficiencies of the above-mentioned levels determine that this technology cannot be widely applied clinically at present.

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