中文摘要：

提出新的具有渐变性孔隙率特性的同心圆人工骨支架结构，建立数学模型并且编写结构设计和仿真软件。通过宏观把握孔隙率变化，建立人工骨支架结构与自然骨之间的对应关系，建造复杂的、高孔隙率、相互连通的微孔道立体结构，并显示三维图像指导支架内部结构的设计。由软件生成IGS文件导入其他三维辅助设计软件如PRO／E等生成STL文件，结合快速成形技术直接制造。最后讨论该支架结构与Kflnlmer股骨三维桁架理论结构模型之间的关系，以及该结构对骨再造和人工骨支架结构设计前景的影响。

英文摘要：

A novel internal concentric architecture of bony artificial bone scaffolds is presented. This architecture is characterized by a gradient in porosity. Its geometric model and the compiled design and simulate software are also presented to depict and form the intricate and interconnected structure matched that of the natural bone. Then its three-dimensional image will be displayed on the computer screen to guide design of scaffolds internal microstructure and create the IGS files to the other 3D CAD software, such as Pro/E, to create the STL files to directly manufacture these architecture models by rapid prototyping technology. At last, the relationship between the kammer＇s three-dimensional truss theory of the femur and the concentric architecture is discussed, and then the expectant effects of the concentric architecture are forecasted.