Method for manufacturing skull defect repair prosthesis

Abstract

The invention discloses a method for manufacturing a skull defect repair prosthesis. The manufacturing method comprises the following steps of 1) acquiring CT scan data of a skull; 2) performing three-dimensional reconstruction based on the CT scan data to obtain a three-dimensional skull model; 3) delineating a bone window of a skull with defects based on the three-dimensional model of the skull,and selecting at least 2 positions at the edge of the bone window; 4) at the positions selected in step 3), extending a reference arc from the edge of the bone window; 5) generating an inner surfaceprosthesis template and an outer surface prosthesis template through the reference arc; 6) performing intersection on the inner surface prosthesis template and the outer surface prosthesis template, taking a superposition part as a three-dimensional model of a skull repair prosthesis; 7) obtaining the skull repair prosthesis three-dimensional model, and processing to obtain the skull repair prosthesis according to step 6). The curvature and thickness of the skull repair prosthesis made by the method are closer to an original skull, the accuracy level of the skull repair prosthesis is improved,and original shape and appearance of skull defect portions are 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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