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Studies of poly(ether)urethane pacemaker lead insulation oxidation.

R J Thoma·R E Phillips
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Abstract

Published reports suggest that silver ions may catalyze the oxidation of poly(ether)urethane soft-segments resulting in the failure of urethane insulations of specific models of pacemaker leads. Attempted oxidation of soft-segment models, poly(tetra-methylene ether)glycols, by silver nitrate has shown that metal-ion catalyzed oxidative-reduction (MICOR) does not adequately explain observed failures unless antioxidants are removed in process. Such cracking can, however, be explained in terms of a metal ion enhanced environmental stress cracking.

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Biocompatible MaterialsEquipment FailureHydrogen PeroxideMagnetic Resonance SpectroscopyOxidation-ReductionPacemaker, ArtificialPolyurethanesSilver NitrateSpectrophotometry, InfraredJournal Article

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BibTeXRIS

R J Thoma, R E Phillips. 1987. Studies of poly(ether)urethane pacemaker lead insulation oxidation.. https://doi.org/10.1002/jbm.820210411

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