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A device that transforms voltages from one value to another using induction is called a transformer. A transformer consists of two separate coils, or windings, wrapped around the same soft iron core. However, they are electrically insulated from each other.
The iron core has a substantial relative permeability. Therefore, the magnetic field lines generated due to the current in one winding are almost entirely confined within the core, such that the same magnetic flux permeates each turn of both...
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Updated: Jan 15, 2026

Magnetically-Assisted Remote Controlled Microcatheter Tip Deflection under Magnetic Resonance Imaging
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使用磁性驱动的微变压器去除血栓.

Fanan Wei1, Shifan Zhan1, Ligang Yao1

  • 1School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, Fujian, China.

Macromolecular bioscience
|January 14, 2026
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概括
此摘要是机器生成的。

一个新的磁性驱动微机器人 (MAMT) 为血栓性疾病提供了解决方案. 这种可重新配置的机器人可以导航血管和碎片,减少血管损伤并提高治疗安全性.

关键词:
磁性微型机器人 磁性微型机器人磁热效应是一种磁热效应.形状记忆 形状记忆 形状记忆结构转型结构转型

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科学领域:

  • 生物医学工程 生物医学工程
  • 材料科学 材料科学 材料科学
  • 纳米技术纳米技术

背景情况:

  • 血栓性疾病是全球死亡的主要原因之一.
  • 目前用于血管干预的医疗机器人面临着诸如侵入性,血管壁压力和导航挑战等局限性.
  • 需要灵活而可控制的系统来实现无血管导航和治疗.

研究的目的:

  • 为治疗血栓性疾病引入一种磁性驱动微机器人 (MAMT),该机器人具有局部结构重新配置能力.
  • 为了证明导航和血栓碎片化的双模式操作.
  • 在模拟的血管环境中评估MAMT的安全性和有效性.

主要方法:

  • 使用嵌入Fe3O4磁纳米粒子的形状记忆聚合物 (SMP) 制造微机器人.
  • 利用由交替磁场 (AMF) 诱导的磁热效应进行结构转换.
  • 在模拟的血液和血栓环境中测试结构切换,形状恢复和血栓清除.

主要成果:

  • 在模拟的血液环境中,MAMT在148±8秒内证明了结构的转变,从棒状到螺旋形状.
  • 在磁性启动时实现了92.11%的形状恢复比率.
  • 成功清除52.7%的模拟血栓,展示了其碎片化能力.

结论:

  • 磁性驱动微机器人 (MAMT) 提供了一个有希望的,可重新配置的解决方案,用于治疗血栓性疾病.
  • 双模式功能 (导航和碎片化) 增强了治疗潜力.
  • 与传统方法相比,降低了血管壁损伤的风险和改善了安全性.