Iridium Oxide Coating with Cauliflower Morphology for Functional Electrical Stimulation Applications
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    发明申请
    Iridium Oxide Coating with Cauliflower Morphology for Functional Electrical Stimulation Applications 审中-公开
    铱氧化物涂层花椰菜形态功能电刺激应用

    公开(公告)号:US20140326482A1

    公开(公告)日:2014-11-06

    申请号:US13549612

    申请日:2012-07-16

    IPC分类号: H01B5/00 C23C14/38

    摘要: An iridium oxide coating for application on an external surface of an electrode of a medical lead is described. The iridium coating is applied using pulse DC sputtering. The coating provides the electrode with an increased double layer capacitance and a reduced electrical impedance. The iridium oxide coating is characterized as having a dense structure with a surface morphology having the general appearance of a fractal or cauliflower shape. The pulse DC sputtered iridium oxide coating is achieved through a mixture ratio of oxygen and argon gases, a sputtering power of between 75 to 125 W, a chamber pressure ranging from about 20-30 mTorr, and a frequency ranging from 50 kHz to 150 kHz. The coated electrode may be used to facilitate the injection of electrical charge stimulation and/or monitor biorhythms of cardiac and neurological tissue.

    摘要翻译: 描述了用于施加在医用引线的电极的外表面上的氧化铱涂层。 使用脉冲DC溅射施加铱涂层。 涂层为电极提供增加的双层电容和降低的电阻抗。 氧化铱涂层的特征在于具有致密结构,其表面形态具有分形或花椰菜形状的一般外观。 脉冲DC溅射的氧化铱涂层通过氧气和氩气的混合比,溅射功率在75至125W之间,室压力范围为约20-30mTorr,频率范围为50kHz至150kHz来实现 。 涂覆的电极可用于促进注射电荷刺激和/或监测心脏和神经组织的生物节律。