What is it about?
The changes in physical surface conditions after the expansion of balloon-expandable stent are known as the primary cause of some serious problem following narrowed arteries treatment. The shape of a balloon in the treatment of eccentric plaque, which is the majority form of plaque, is hypothesized influencing stent surface roughness. In this paper, the influence of the balloon shape on the changes in surface roughness will be observed using the finite element method. Material properties utilized in the simulation are 316 stainless steel for the stent; polyethylene terephthalate (PET) for the balloon; hypocellular for the plaque; and carotid artery for the vessel wall. Type Palmaz stent is determined for modeling in the structural analysis. Type cylindrical and offset balloon shape is chosen in the analysis, which one gives better treatment for eccentric plaque.
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Perspectives
The finite element analysis indicated that offset balloon shape succeeds to reduce stress intensity area on the vessel wall and helps to improve foreshortening and dog boning effects.
Dr Achmad Syaifudin
Institut Teknologi Sepuluh Nopember
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This page is a summary of: S0220204 Effect of balloon shape in treatment of eccentric plaque considering the changes in stent surface roughness, The Proceedings of Mechanical Engineering Congress Japan, January 2014, Japan Society of Mechanical Engineers,
DOI: 10.1299/jsmemecj.2014._s0220204-.
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