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

Authors
Type
Published Article
Journal
Journal of biomedical materials research
Publication Date
Volume
21
Issue
A3 Suppl
Pages
287–297
Identifiers
PMID: 3429467
Source
Medline
License
Unknown

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.

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