Anterior atlantoaxial fixing plate and making method

Abstract

The invention relates to a making method of an anterior atlantoaxial fixing plate. The making method comprises the following steps: acquiring atlantoaxial CT data of a patient; obtaining a three-dimensional atlantoaxial model through threshold setting and a region growing operation; implementing 3D printing and reduction on the atlantoaxial model; making an anterior atlantoaxial fixing plate model, conducting CT scanning and establishing a three-dimensional anterior atlantoaxial fixing plate model and a curved surface model; introducing the cured surface model into digital model carving software and conducting detail processing; conducting a rolling-over operation on the curved surface model, and further processing a solid mold; and pouring a mineralized collagen-base composite material into the mold and implementing molding, so that the anterior atlantoaxial fixing plate is obtained. The invention also relates to the anterior atlantoaxial fixing plate. According to the invention, theanterior atlantoaxial fixing plate is made in accordance with data of patients, so that the anterior atlantoaxial fixing plate can achieve good embedded matching with an atlantoaxial segment; and theanterior atlantoaxial fixing plate can be installed just by adjusting the position, relative to the atlantoaxial segment after reduction, of the anterior atlantoaxial fixing plate in an operation; therefore, the anterior atlantoaxial fixing plate is simple to operate, and a complex process of secondary molding in the operation is avoided.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an atlantoaxial anterior fixation plate and a preparation method thereof. Background technique [0002] Atlantoaxial dislocation is mostly caused by craniocervical trauma, congenital malformation, inflammation, tumor and other factors, which is easy to cause complications, and has a high disability and mortality rate. At present, internal fixation is mostly used in surgery. However, this method has more complications through the oropharyngeal approach, such as the risk of carotid artery and spinal cord injury. If the posterior decompression method is used and the atlantoaxial spine is internally fixed in the occipital neck, it is difficult to achieve complete reduction, and the non-functional occipitocervical fusion and fixation will cause more functional loss of the occipital neck and cervical spine, and the decompression effect is not ideal. [0003] The existing fixat...

AI Technical Summary

Problems solved by technology

At present, internal fixation is mostly used in surgery. However, this method has more complications through the oropharyngeal approach, such as the risk of carotid artery and spinal cord injury.

If the posterior decompression method is used to internally fix the atlantoaxial spine in the occipital neck, it is difficult to achieve complete reduction, and the non-functional occipitocervical fusion and fixation will cause more functional loss of the occipital neck and cervical spine, and the decompression effect is not ideal.

[0003] The existing fixation devices for atlantoaxial dislocation are mostly made of metal, and their structures are relatively complicated, and they cannot match the user's own atlantoaxial spine well, which may affect the cervical spine during use, or Cause new bone deformation, cause additional burden to the user, and may even cause secondary injury

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