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软双面深度大脑刺激电极的制造和剂量反应模拟

Jian Zhang1, Bei Tong1, Changmao Ni1

  • 1Wuhan Neuracom Technology Development Co., Ltd., Wuhan 430074, China.

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|August 28, 2025
PubMed
概括

一个新的灵活的双面电极可以减少植入创伤, 这种装置可实现定向刺激,并提供一种优化大脑深度刺激参数的模型.

科学领域:

  • 生物医学工程
  • 神经科学
  • 材料科学

背景情况:

  • 灵活的电极对于高级神经调节至关重要.
  • 微电机系统 (MEMS) 技术使复杂的设备制造成为可能.
  • 了解刺激参数对组织激活的影响对于治疗疗效至关重要.

研究的目的:

  • 使用MEMS技术设计和制造一个16通道的双面柔性电极.
  • 开发一个模拟电刺激和微运动引起的损伤的计算模型.
  • 研究刺激参数与激活组织体积 (VTA) 之间的剂量反应关系.

主要方法:

  • 使用MEMS技术制造基于聚胺的柔性电极.
  • 用于电刺激和损伤模拟的3D有限元模型的开发.
  • 应用实验设计 (DOE) 和多变量回归来分析刺激参数 (电流,频率,脉冲宽度) 和VTA.

主要成果:

  • 柔性电极表现出低阻抗 (5.9 kΩ在1 kHz) 和高电荷存储能力 (10.63 mC/cm2).
  • 与和圆柱状电极相比,模拟显示植入创伤明显较低,具有定向刺激能力.
  • 一个回归模型准确地预测了VTA (R2 = 0.912),确定了当前振幅和脉冲宽度作为重要的VTA影响因素.
关键词:
在 DBS 电极在FEM一个MEMS剂量反应分析

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结论:

  • 这项研究成功制造并描述了一种新的灵活双边深度脑刺激 (DBS) 电极.
  • 电极的低创伤,多通道和定向刺激功能为精确的神经调节提供了一种新方法.
  • 开发的刺激参数-VTA模型为优化临床环境中的治疗参数提供了基础.