Abstract
Two mechanisms have been discovered that can cause failure of polyurethane insulation, a form of stress cracking (SC) and metal catalyzed oxidation (MO). This report summarizes the results of investigation into cardiovascular lead insulation failure due to SC, appears to be primarily a mechanical phenomenon where residual polymer stress/strain interacts with tissues to develop crazed cracks. Four early P80A insulated transvenous cardiovascular lead models (Medtronic, Inc. ) are used as examples.
Cite
CITATION STYLE
Stokes, K. B., & Davis, M. W. (1985). ENVIRONMENTAL STRESS CRACKING IN IMPLANTED POLYURETHANE DEVICES. In Polymeric Materials Science and Engineering, Proceedings of the ACS Division of Polymeric Material (Vol. 53, pp. 1–5). ACS. https://doi.org/10.1007/978-1-4613-1829-3_16
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