Stroetmann B, Siemsen G, Straehler B
Pacing Clin Electrophysiol. 1995 Jan;18(1 Pt 2):237-42. doi: 10.1111/j.1540-8159.1995.tb02512.x.
The electrochemical behavior of porous TiN coating for defibrillator electrodes was investigated by in vitro studies. A commercially available Ti patch was compared with a Ti patch coated with a layer of porous TiN. Similarly, the influence of the TiN coating on a Pt/Ir intracardial electrode was tested. Porous TiN coatings were made by reactive sputtering on the plain electrodes. Electrode potential measurements were performed during monophasic anodic and cathodic defibrillator shocks delivering energies between 1 J and 49 J. Porous TiN coating of Pt/Ir coils was found suitable to deliver cathodal pulses, while a plain coil remains recommended for anodic shocks. TiN coating was of benefit for conventional Ti patches. Particularly, in the case of anodic shocks, the TiN layer protected the Ti-mesh from immediate oxidation. However, above 70 anodic shocks of 49 J, the TiN coating underwent oxidation to an oxynitride. An estimated 180 anodic shocks of 10 J could be delivered before TiN oxidation became measurable by increased polarization.
通过体外研究对用于除颤器电极的多孔TiN涂层的电化学行为进行了研究。将市售的钛贴片与涂覆有一层多孔TiN的钛贴片进行比较。同样，测试了TiN涂层对铂/铱心内电极的影响。通过在普通电极上进行反应溅射制备多孔TiN涂层。在单相阳极和阴极除颤器电击期间进行电极电位测量，电击能量在1焦耳至49焦耳之间。发现铂/铱线圈的多孔TiN涂层适合输送阴极脉冲，而对于阳极电击，仍建议使用普通线圈。TiN涂层对传统的钛贴片有益。特别是在阳极电击的情况下，TiN层保护钛网不被立即氧化。然而，在49焦耳的70次以上阳极电击后，TiN涂层氧化成氮氧化物。在通过极化增加可测量到TiN氧化之前，估计可以进行180次10焦耳的阳极电击。
