A kind of manufacturing method of skull defect repair prosthesis

Abstract

The invention discloses a method for making a skull defect repair prosthesis. The manufacturing method includes the following steps: 1) obtaining CT scan data of the skull; 2) performing three-dimensional reconstruction based on the CT scan data to obtain a three-dimensional model of the skull; At least 2 positions; 4) At the position selected in step 3), extend the reference arc from the edge of the bone window; 5) Generate the inner surface prosthesis template and the outer surface prosthesis template from the reference arc; 6) From the inner surface template Perform intersection calculation with the outer surface template, and take the overlapping part as the three-dimensional model of the cranioplasty prosthesis; 7) process the cranioplasty prosthesis based on the three-dimensional model of the cranioplasty prosthesis obtained in step 6). The radian and thickness of the cranioplasty prosthesis made by this method are closer to the original skull, the accuracy level of the cranioplasty prosthesis is improved, and the original shape of the skull defect is well restored.

Description

technical field [0001] The invention relates to the field of skull defect repair prosthesis, more specifically, to a method for manufacturing a skull defect repair prosthesis. Background technique [0002] The surgical operation for repairing skull defects caused by traumatic brain injury and craniotomy is called cranioplasty. Solve the problem of shape repair and plastic surgery. [0003] Cranioplastic surgery is one of the most common neurosurgery operations. Its main purpose is to prevent re-injury of brain tissue, restore cranial cavity sealing, and treat skull defect syndrome. In addition, there are some important functions: (1) Brain protection. Generally speaking, any skull defect with a diameter of more than 3 cm is recommended to be repaired as long as it is not located under the temporal or occipital muscles. (2) Cosmetic effect. For the cranial defect in the fronto-orbital region, even if the area is small and there is no discomfort, it should be repaired in o...

AI Technical Summary

Problems solved by technology

However, the obtained repair prosthesis usually has a large difference in curvature and thickness from the original skull, and cannot restore the original shape of the skull defect well; in addition, the edge is not smooth, which will cause mechanical stimulation to the skin of the defect, resulting in skin damage. Complications such as subvalvular hemorrhage, effusion, and implant exposure

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