走向一种新的支架检索器:设计,优化和实验验证验证
Shuo Wu1, Francesca Berti2, Xianming Wang1
1Department of Mechanical Engineering and Automation, Robotics Institute, Beihang University, Xueyuan Road 37, Beijing, 100191, China.
Biomechanics and modeling in mechanobiology
|September 18, 2025
概括
一种新的支架回收器设计可以提高机械血栓切除术在急性缺血性中风中的灵活性和辐射强度. 这种新的设备显示出更好地去除复杂的大脑动脉中的血栓的希望.
科学领域:
- 生物医学工程 生物医学工程
- 神经外科 神经外科
- 医疗器械 医疗器械
背景情况:
- 急性缺血性中风是全球死亡和残疾的主要原因.
- 使用支架检索器进行机械血栓切除术可以改善结果,但在复杂的血管系统中存在困难.
- 目前的器件缺乏符合性,降低了在扭曲和分叉动脉中凝块保留的有效性.
研究的目的:
- 介绍和评估一种新的自我扩展式支架检索器设计.
- 在复杂的血管解剖学中增强符合性和血栓保留.
- 为了优化支架取回器,以提高辐射力和灵活性.
主要方法:
- 有限元分析用于评估生物力学参数 (应变,辐射力).
- 多目标优化以平衡辐射力并最大限度地减少应变.
- 在体外血栓切除实验在现实的狭窄和曲血管模型中进行.
主要成果:
- 与商业设备相比,优化的支架显示曲矩比商业设备低18.2%.
- 在变形下改善的横截面几何维护表明提高了灵活性.
- 在试验室中证明了有效的血栓参与,尽管分叉模型提出了挑战.
结论:
- 新的支架检索器设计提供了灵活性和辐射强度的有希望的平衡.
- 这种设计有可能改善复杂的血管环境中的机械血栓切除术结果.
- 需要进一步发展,以应对两叉解剖学的挑战.
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