磁导,刺激响应的微设备用于内血管治疗.
Sanjay Manoharan1, Vivek Subramanian2
1Laboratory for Advanced Fabrication Technologies, Institute of Electrical and Micro Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Neuchâtel, 2000, Switzerland. sanjay.manoharan@epfl.ch.
Biomedical microdevices
|January 20, 2026
概括
本研究介绍了一种无线内血管微器件用于动脉瘤治疗,使用磁导和近红外光进行远程部署. 这种新的平台可以更好地访问困难的解剖学,增强治疗选择.
科学领域:
- 生物医学工程 生物医学工程
- 医疗器械 医疗器械
- 材料科学 材料科学 材料科学
背景情况:
- 在复杂的血管解剖学中,基于导管的系统限制了内血管治疗的准入.
- 需要先进的,最少侵入性的治疗策略来修复动脉瘤.
研究的目的:
- 开发和验证无线动脉瘤治疗的无线微设备平台.
- 为了证明磁导和近红外 (NIR) 触发了内血管器件的部署.
- 评估平台在减少动脉内流量的有效性.
主要方法:
- 设计了一个微设备平台,结合了磁导和NIR触发的形状记忆聚合物 (SMP) 部署.
- 两种设备架构 (流动破坏器,封闭器) 被设计和测试在血管幻象中.
- 导航是使用流量响应,磁调节棒滑动 (F-MMSS) 框架建模的.
- 试验评估了磁转向,NIR部署和血液动力学效应.
主要成果:
- 在真实的血管幻影中,成功实现了无线导航和微设备的远程部署.
- 通过NIR激活,可以通过ex vivo组织进行非侵入性部署.
- 通过粒子图像速度测量和CFD证实了动脉内速度的大幅降低.
- PLA-黑色素复合物显示了初步的生物相容性和血液相容性.
结论:
- 开发的平台为无线导航和内血管微设备的远程部署提供了概念验证.
- 这项技术为动脉瘤修复的导管治疗提供了一个有希望的替代方案.
- 进一步的体内评估是必要的,以将这项技术转化为临床实践.
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