使用有限元分析评估定制连续正气道压力面罩的适合度的方法
Erica Martelly1, Sandeep Rana2, Kenji Shimada1
1Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA, USA.
Computer methods in biomechanics and biomedical engineering
|April 12, 2024
概括
一个新的有限元 (FE) 模型评估定制的连续正气道压力 (CPAP) 面具. X带配置显示了压力分布的改善,这表明它更适合治疗睡眠呼吸暂停.
科学领域:
- 生物医学工程 生物医学工程
- 医疗器械设计 医疗器械设计
- 计算力学 计算力学 计算力学
背景情况:
- 持续的正气道压力 (CPAP) 治疗对于治疗阻塞性睡眠呼吸暂停等呼吸障碍至关重要.
- 现有的CPAP口罩往往为患者带来舒适性和泄漏挑战.
- 之前的研究重点是设计定制的口罩,以提高患者的体验.
研究的目的:
- 开发和验证一个有限元 (FE) 模型,用于在制造前评估定制CPAP口罩的适合性.
- 使用FE模拟来比较两个不同的皮带配置 (原始和X) 的适配性能.
- 为了将模拟结果与体内数据相关联,以预测口罩泄漏.
主要方法:
- 创建一个详细的FE模型,包括头骨几何和可变的面部软组织厚度.
- 在FE模型中包含两个不同的皮带配置 (原始和X).
- 对四个受试者进行模拟测试,以分析应力分布并确定潜在的适应问题.
主要成果:
- 与原来的带相比,X带配置显示了更均的应力分布,这表明它更好地适合.
- FE模拟显示了应力分布差距,与最初的体内试验中观察到的泄漏相关.
- 应力分布的标准偏差作为评估面具适合性的关键指标.
结论:
- 开发的FE建模方法是定制CPAP口罩的代设计和评估的一个有价值的工具.
- 在物理原型之前,FE模拟可以预测面具的适合性,并识别潜在的泄漏区域,优化开发.
- X带配置在CPAP口罩设计中提供了有前途的改进,以提高患者的舒适性和有效性.
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