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探索碳纤维等级PEEK复合材料作为骨固定板的高级功能,使用有限元素分析

Chenggong Zhang¹, Pihua Wen², Yigeng Xu³

¹School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UK.

Materials (Basel, Switzerland)

|January 23, 2024

概括

与金属植入物相比,新的碳纤维增强PEEK骨板显著降低了应力屏蔽. 这些先进的材料为骨折愈合提供了更好的机械适应性,并改善了患者的治疗结果.

科学领域:

生物材料工程生物材料工程
骨科生物力学骨科生物力学
材料科学材料科学材料科学

背景情况:

传统的金属骨固定板 (如不钢,合金) 存在诸如应力屏蔽,过敏反应和成像干扰等挑战.
低弹性模块材料有望克服金属植入物在生物机械应用中的局限性.

研究的目的:

为了研究切碎的碳纤维增强聚乙乙 (CCF/PEEK) 功能分级材料 (FGM) 骨板在减轻应力屏蔽方面的有效性.
为了比较FGM骨板在静态和动态负载条件下与传统金属板的应力屏蔽效应.

主要方法:

使用有限元分析 (FEA) 模型和分析CCF/PEEK FGM骨板使用ABAQUS软件.
用户子程序USDFLD和VUSDFLD被用来建立具有不同弹性模量分布的FGM骨板模型.
模型的设计具有相当的整体弹性模量,但具有不同的材料性质梯度.

主要成果:

与金属骨板相比,所有CCF/PEEK FGM骨板显示压力屏蔽效果较低.
一个具有弹性模量从中心增加到边缘的FGM板提供了最显著的应力刺激.
这种特定的FGM设计也导致了在断裂区域中最均的应力分布.

结论:

CCF/PEEK FGM骨板为骨固定提供了比传统金属板更优质的替代方案,有效降低了应力屏蔽.
具有量身定制的弹性模量梯度的FGM骨板的设计对于优化机械适应性和促进骨折愈合至关重要.
这些发现为开发下一代植入式医疗器械提供了宝贵的见解,这些医疗器械具有增强的生物力学性能.

关键词:

在CCF/PEEK中使用.有限元分析是有限元分析.固定板上的固定板.具有功能分级的材料.应力屏蔽应力屏蔽

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