在呼吸和肌肉收缩过程中对有限元腹壁模型的数值研究
Arthur Jourdan1, Rohit Dhume2, Elisabeth Guérin1
1Medtronic, Surgical Operating Unit, General Surgical Technologies, 116 Avenue du Formans, BioTex 01600, Trévoux, France.
Computer methods and programs in biomedicine
|January 7, 2024
概括
一个经过验证的腹壁的有限元模型,包括肌肉激活,显示了个性化腹修复的希望. 这种特定于患者的方法可以改善手术规划和植入物选择,从而改善患者的治疗结果.
科学领域:
- 生物力学 生物力学
- 计算建模计算建模
- 手术工程的外科工程.
背景情况:
- 腹腔修复复发病率仍然很高,需要个性化的方法.
- 目前的患者特定模型缺乏足够的验证.
- 改善诊断,手术策略和假肢选择是获得更好的结果的关键.
研究的目的:
- 开发和广泛验证一个现实的,针对患者的腹壁有限元素模型.
- 将肌肉激活纳入模拟日常活动的模型.
- 评估模型的稳定性和外科手术规划的潜力.
主要方法:
- 创建了腹壁的参数3D有限元素模型,结合了骨,肌肉和肌神经结构.
- 实行了超弹性异构材料,模拟了被动膨胀 (呼吸) 和活跃的肌肉收缩 (咳).
- 进行了敏感性分析,以评估个体间变化的影响 (BMI,组织厚度,腹内压力,肌肉收缩性).
主要成果:
- 模型预测与形状,肌肉位移,应变和力量的实验数据密切匹配.
- 敏感性分析显示,腹内压力和肌肉厚度是被动情景中的关键因素.
- 最大等距应力,肌肉厚度和激活前的腹内压力显著影响了涉及肌肉收缩的模拟.
结论:
- 经过验证的有限元模型准确地代表了腹壁机制.
- 这种特定于患者的模型可以增强外科手术规划,预防策略和对腹腔的假肢评估.
- 未来的工作将探索手术技术和假肢网状性质的影响.
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