超大面积钛合金头盖骨缺损补片的数字化设计及其成形研究

发布时间：2019-01-26 11:23

【摘要】：利用CT数据处理技术与夹持工艺进行头盖骨钛网补片数字化设计与制备是一种新的设计制造方法。以典型的超大面积头盖骨缺损患者为研究对象,首先将病人头部的CT断层数据按照医学图像切割方法进行骨骼与头皮、脑组织的图像边缘切割,运用配准方法将切割出的头盖骨断层图像进行配准,并应用三维可视化技术实现患者头盖骨数学模型的重构。然后在此基础上,使用薄板样条插值技术按照头盖骨健康侧曲面延展过渡得到头盖骨补片的数学模型。最后,根据头盖骨补片的数学模型设计出头盖骨补片冲压成形所用的凸凹模具,并加工出所需的头盖骨钛网补片。该技术解决了头盖骨补片制备中存在的加工精度低、制作成本高、周期长等问题,同时提高了补片与缺损边缘的贴合精度。
[Abstract]:It is a new design and manufacture method to use CT data processing technology and gripping technology to design and fabricate the titanium mesh patch of skull. The typical patients with large area skull defect were studied. The CT data of the head of the patient were first cut according to the medical image cutting method, and the image edge of the bone, scalp and brain tissue was cut according to the medical image cutting method. The image of cranium was registered by registration method, and the reconstruction of mathematical model of cranium was realized by 3D visualization. Then, the mathematical model of scalp patch is obtained by using the thin plate spline interpolation technique according to the extension of the scalp healthy lateral surface. Finally, according to the mathematical model of the skull patch, the convex and concave die used in the stamping forming of the skull patch was designed, and the needed titanium mesh patch of the skull was processed. The technology solves the problems of low processing precision, high cost and long period in the preparation of cranium patch, and improves the accuracy of fitting the patch to the defect edge at the same time.
【作者单位】：燕山大学车辆与能源学院;北华大学机械工程学院;
【基金】：河北省自然科学基金资助项目(E2015203002) 秦皇岛市科学技术研究项目(201701B039)
【分类号】：R318.08;TG146.23

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