肺减容回力圈体外疲劳试验

吴娟洁; 王书晗; 刘文亮; 刘付惠玲; 朱魁元; 彭思睿; 周靓丽; 刘尧; 刘洪伟

doi:10.3969/j.issn.1671-7104.2022.03.020

肺减容回力圈体外疲劳试验

In Vitro Fatigue Test of Lung Volume Reduction Loop

摘要

摘要: 肺减容回力圈利用经支气管镜肺减容技术将坏死肺气肿组织挤压塌陷,排出内部气体达到肺减容目的来治疗肺气肿。肺减容回力圈植入人体后随着呼吸其挤压的部分肺组织有扩张的趋势,会使得肺减容回力圈出现周期的展开成直线状的趋势。长期周期性作用后肺减容回力圈有变形失效的风险,因此耐疲劳性能是肺减容回力圈最重要的性能指标之一。利用Z向震动疲劳机模拟人体内呼吸周期运动的变化量来检验肺减容回力圈的疲劳性能,为以后肺减容相关产品的体外疲劳性能测试方法提供一定的借鉴作用。

Abstract: Lung volume reduction loop uses bronchoscopic lung volume reduction(BLVR) technology to compress and collapse the necrotic emphysema tissue and exhaust the internal gas to achieve the purpose of lung volume reduction to treat emphysema. After the lung volume reduction loop is implanted into the human body, the compressed part of the lung tissue tends to expand with breathing, which makes the lung volume reduction loop expand into a linear trend periodically. Fatigue resistance is one of the most important performance indexes of the lung volume reduction loop. In the paper, Z-direction vibration fatigue machine was used to simulate the changes of human respiratory cycle movement to test the fatigue performance of lung volume reduction loop, which can provide some reference for the test method of in vitro fatigue performance of lung volume reduction related products in the future.

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