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    • 1. 发明授权
    • Selective parylene coating for cardiac pacemaker electrodes
    • 心脏起搏器电极的选择性聚对二甲苯涂层
    • US08355802B2
    • 2013-01-15
    • US12486006
    • 2009-06-17
    • Oliver KeitelFrank KrügerMichael Pönitz
    • Oliver KeitelFrank KrügerMichael Pönitz
    • A61N1/05
    • A61N1/0565A61N1/0573B05D1/60B05D3/145
    • A stimulation electrode is produced having a porous film layer and being partially coated with an insulating parylene (polyparaxylylene) film, whose insulating film has a dielectric breakdown voltage of greater than 100 V. Parylene is deposited on the entire surface of a porous film coating and then partially removed again by plasma. After the partial removal of the parylene, this porous film still has a capacitance of greater than 15 mF/cm2 in a physiological NaCl solution at a frequency of 0.1 Hz. For the stimulation electrode, the transition from the insulating film to the porous film is formed so that the film thickness of the parylene film decreases continuously. In this way, a stimulation electrode having a porous film layer and being partially coated with an insulating parylene film is provided, whose electrode on the non-insulating parylene film-coated surface has a capacitance of greater than 15 mF/cm2 in a physiological NaCl solution at a frequency of 0.1 Hz and whose insulating film advantageously has a dielectric breakdown voltage of greater than 100 V.
    • 产生具有多孔膜层并部分涂覆绝缘聚对二甲苯(聚对二甲苯)膜的刺激电极,其绝缘膜具有大于100V的绝缘击穿电压。聚对二甲苯沉积在多孔膜涂层的整个表面上, 然后再次通过等离子体去除。 部分去除聚对二甲苯之后,该多孔膜在0.1Hz的频率下在生理NaCl溶液中仍然具有大于15mF / cm 2的电容。 对于刺激电极,形成从绝缘膜到多孔膜的过渡,使得聚对二甲苯膜的膜厚度连续降低。 以这种方式,提供了具有多孔膜层并部分地涂有绝缘聚对二甲苯膜的刺激电极,其非绝缘聚对二甲苯膜涂覆表面上的电极在生理NaCl中具有大于15mF / cm 2的电容 溶液,其频率为0.1Hz,其绝缘膜有利地具有大于100V的介电击穿电压。