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结构设计和生物机械分析反沉降梯度多孔的人造脊椎与拓学框架相结合
Peng Shang1,2, Xinyu Wu3, Rongqian Li3
1Hebei University of Technology, Tianjin, 300400, China. shangpeng@hebut.edu.cn.
BMC musculoskeletal disorders
|January 25, 2026
概括
一种新型的人工脊椎植入物 (AVI) 具有渐变状腺结构,可显著提高脊柱重建的安全性和稳定性. 这种先进的设计减少了应力度,并提高了与传统植入物相比的沉降阻力.
科学领域:
- 生物材料工程 生物材料工程
- 脊柱外科手术 脊柱外科手术
- 机械工程 机械工程
背景情况:
- 机械故障和植入物沉降是用于全盘置换的人工脊椎植入物 (AVI) 的关键问题.
- 开发更安全的AVI,提高沉降抵抗力,对于成功的脊柱重建至关重要.
研究的目的:
- 设计和评估一个具有拓实体框架和梯度三倍周期性最小表面 (TPMS) 陀螺内部的新型AVI.
- 为了提高AVI的安全性,稳定性和沉降抵抗力,用于脊柱重建.
主要方法:
- 一个新的AVI被设计成一个拓梯度状腺结构模拟骨.
- 在各种生理条件下,使用有限元法 (FEM) 分析了生物力学特性.
- 选择性激光化 (SLM) 用于制造,随后进行准静态压缩和沉降实验.
主要成果:
- 与传统设计相比,拓梯度陀螺AVI的峰值应力显著降低 (降低高达69.7%).
- 与truss+fluorite AVI相比,骨植入物接口的压力减少了5.9%-14.1%,与网 (TMC) 相比减少了44.3%.
- 这种新型AVI的最大压缩负荷是+化AVI的1.12倍,抗沉降能力优越 (20.4%更高).
结论:
- 拓优化和梯度陀螺结构的结合显著提高了AVI的机械强度和沉降阻力.
- 这种新的AVI设计有效地减少了压力度,为脊柱重建提供了有前途的解决方案.
- 开发的AVI预计将成为脊柱重建的首选选择,因为其改善了生物力学性能.
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