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Design of new gradient scaffolds based on triply periodic minimal surfaces and study on its mechanical, permeability and tissue differentiation characteristics

  • Zhiqiang Liu
  • , He Gong
  • , Jiazi Gao
  • , Zhehao Liu
  • , Shanshan Zou
  • , Sujing Tian
  • School of Mechanical and Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

为建立具有良好生物学性能的骨支架结构,本文基于螺旋(G)型、菱形(D)型三周期极小曲面(TPMS),设计了两种新型梯度TPMS支架:双向线性渐变G型(L-G型)支架、D型/G型融合(N-G型)支架,并通过压缩仿真获得了两种支架的结构力学性能参数。然后,本文通过计算流体动力学(CFD)仿真获得了支架内流体的流动性能参数,并由达西定律计算出两种支架的渗透率。基于组织分化理论,本研究预测了两种支架的组织分化面积。研究结果显示,L-G型支架较N-G型支架的承载能力更强,而N-G型支架在渗透率及软骨组织分化面积等生物学性能方面更优。L-G型和N-G型支架的建模过程为骨支架的设计提供了一种新思路,文中的仿真分析也可为支架植入人体后的骨整合预测提供参考。.

Original languageEnglish
Pages (from-to)960-968
Number of pages9
JournalShengwu Yixue Gongchengxue Zazhi/Journal of Biomedical Engineering
Volume38
Issue number5
DOIs
StatePublished - 25 Oct 2021
Externally publishedYes

Keywords

  • flow property
  • gradient triply periodic minimal surfaces scaffold
  • permeability
  • structural strength
  • tissue differentiation

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