基于计算机的分析不同修改头和适配器套设计的形连接强度
Johanna Meier1, Jessica Hembus1, Rainer Bader1
1Biomechanics and Implant Technology Research Laboratory, Department of Orthopaedics, Rostock University Medical Center, Rostock, Germany.
Biomedizinische Technik. Biomedical engineering
|September 12, 2023
概括
在关节修复手术期间确保足够的组装力,以防止缩连接故障. 力量不足,特别是使用较大的陶修改头和适配器袖子,可能会损害稳定性.
科学领域:
- 整形外科手术 整形外科手术
- 生物材料科学是生物材料的科学.
- 机械工程 机械工程 机械工程
背景情况:
- 有适配器袖的陶修复头在关节整形术中使用,以减轻与受损的缩器相关的陶骨折风险.
- 圆连接对于部植入物的稳定性和寿命至关重要.
研究的目的:
- 为了在各种条件下研究陶修改头与适配器袖的线连接强度.
- 为了评估头径,适配器袖子长度和组装力对连接完整性的影响.
主要方法:
- 用有限元分析 (FEA) 来模拟线连接.
- FEA评估了不同头径,适配器袖子长度和组装力的影响.
- 在简化联合负载下分析了接触压力模式,并对特定配置进行了实验验证.
主要成果:
- 拉开力与增加的组装力正相关.
- 更大的头径和更长的适配器袖子导致拉开力减少,接触面积减少,接触压力降低.
- 在角度负荷下观察到显著的接触压力峰值和对角图案,组装力较低 (<4 kN) 和更大的适配器套.
结论:
- 术内组合力是确保部修复手术中逐渐连接强度的关键因素.
- 在使用更大的头径和适配器袖子尺寸时,需要特别注意组装力,以防止潜在的不稳定性.
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