Surface Modification of Microelectrode for Deep Brain Stimulation

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Surface Modification of Microelectrode for Deep Brain Stimulation

更新时间：2025-07-09

- Surface Modification of Microelectrode for Deep Brain Stimulation
- Vol. 45, Issue 10, Pages: 98-103(2011)
- 作者机构：
  
  西安交通大学机械制造系统工程国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： R608;TB39
- Online First：10 October 2011，
  
  Published：2011
- 稿件说明：
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Surface Modification of Microelectrode for Deep Brain Stimulation[J]. 2011, 45(10): 98-103.
DOI：

Surface Modification of Microelectrode for Deep Brain Stimulation[J]. 2011, 45(10): 98-103. DOI：

摘要

为了提高脑深部刺激电极的生物相容性

降低脑组织的免疫反应

减少或抑制电极周围包裹物的形成

对电极植入端聚氨酯材料进行了表面改性处理.首先用N

进行等离子体处理

在电极表面生成活性基团——氨基

再利用电极表面的氨基基团与YIGSR多肽分子发生聚合反应

从而实现在电极表面修饰上对神经细胞具有促进生长作用的多肽分子.改性电极的大鼠植入实验结果发现

改性电极能够在一定程度上减少胶质包裹物的形成

有利于电极与神经细胞之间接触

增加有效刺激体积

证明了电极聚氨酯材料表面接枝聚合生物大分子的可行性

对今后电极表面改性的深入研究具有一定的参考意义.

Abstract

To improve the biocompatibility of micro-electrode for deep brain stimulation(DBS)

and to reduce the immune response of brain tissue and thick encapsulation layer surround the electrode

a surface modification was executed on the polyurethane of DBS electrode head. The electrode surface firstly was modified by N

plasma treatments to achieve the active amino group

and then the polypeptide molecule YIGSR was endowed by a polymerization with the amino group on the electrode surface

consequently

the electrode surface had a layer of polypeptide molecule promoting nerve cell growth. The experiment results of modified electrode implant in rat brain confirm that to a certain degree

the modified electrode can reduce the thick encapsulation layer surround the electrode

it is beneficial for contact between electrode and never cells

and the electrode can make a bigger volume of tissu

e activated. The grafting large-molecule polymer on the polyurethane surface is feasible

and the conclusion gets referable for the further research on bioelectrode surface modification.

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references

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