Corrosion and degradation of a polyurethane/Co-Ni-Cr-Mo pacemaker lead.

P Sung, A C Fraker
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Abstract

An investigation to study changes in the metal surfaces and the polyurethane insulation of heart pacemaker leads under controlled in vitro conditions was conducted. A polyurethane (Pellethane 2363-80A)/Co-Ni-Cr-Mo (MP35N) wire lead was exposed in Hanks' physiological saline solution for 14 months and then analyzed using scanning electron microscopy, x-ray energy dispersive analysis, and small angle x-ray scattering. Results showed that some leakage of solution into the lead had occurred and changes were present on both the metal and the polyurethane surfaces.

聚氨酯/Co-Ni-Cr-Mo起搏器引线的腐蚀和降解。
在体外条件下,研究了心脏起搏器导线金属表面和聚氨酯绝缘层的变化。将一种聚氨酯(Pellethane 2363-80A)/Co-Ni-Cr-Mo (MP35N)引线暴露在Hanks生理盐水溶液中14个月,然后用扫描电镜、x射线能量色散分析和小角x射线散射对其进行分析。结果表明,溶液有部分渗漏到铅中,金属表面和聚氨酯表面都发生了变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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