Recent advances in angioplasty have involved the application of polymer coatings to stent surfaces for purposes of drug delivery in order to prevent a reblockage of the artery due to smooth muscle cell proliferation. This advance has reduced instances of such restenosis from ∼40% for bare metal stents to ∼5% for drug eluting stents, and has yielded a milti-billion dollar per annum market. However, delamination of polymer coatings on commercial stents has recently been reported using SEM analysis [1, 2]. Such delamination results from interface failure due to high interface tractions developed in the region of the stent plastic hinge.
- Bioengineering Division
Mixed Mode Delamination of Stent Coatings During Deployment
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McGarry, P, & Parry, G. "Mixed Mode Delamination of Stent Coatings During Deployment." Proceedings of the ASME 2010 Summer Bioengineering Conference. ASME 2010 Summer Bioengineering Conference, Parts A and B. Naples, Florida, USA. June 16–19, 2010. pp. 129-130. ASME. https://doi.org/10.1115/SBC2010-19651
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