NDLI: A comparison between fractured Xience-like and Palmaz-like stents using a novel computational model

Content Provider	IEEE Xplore Digital Library
Author	Tambaca, J. Canic, S. Paniagua, D.
Copyright Year	2009
Description	Author affiliation: Department of Mathematics, University of Houston, Houston, TX 77204, USA (Canic, S.) \|\| Cardiac Catheterization Laboratory, Michael E. DeBakey Veterans Medical Center and Baylor College of Medicine, Houston, TX 77030, USA (Paniagua, D.) \|\| Department of Mathematics, University of Zagreb, Bijeni¿ka 30, Croatia (Tambaca, J.)
Abstract	We developed a novel mathematical model to study the mechanical properties of endovascular stents in their expanded state. The model is based on the one-dimensional theory of slender curved rods. Stent struts are modeled as linearly elastic curved rods that satisfy the kinematic and dynamic contact conditions at the vertices where the struts meet. A Finite Element Method for a numerical computation of its solution was developed and used to study mechanical properties of two commonly used coronary stents (Palmaz-like and Xience-like stent) in their expanded, fractured state. A simple fracture (separation), corresponding to one stent strut being disconnected from one vertex in a stent, was considered. Our results show a drastic difference in the response of the two stents to the physiologically reasonable uniform compression and bending forces. In particular, deformation of a fractured Xience-like stent (with one strut separated from one vertex) is significantly larger than that of a fractured Palmaz-like stent when exposed to uniform compression and bending. This presents conditions which may be a precursor for the clinically observed complications associated with in-stent thrombosis and in-stent restenosis of fractured coronary stents.
Starting Page	1106
Ending Page	1108
File Size	415209
Page Count	3
File Format	PDF
ISBN	9781424432967
ISSN	1557170X
DOI	10.1109/IEMBS.2009.5334427
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computational modeling USA Councils Mathematical model Finite element methods Mathematics Mechanical factors Kinematics Arteries Catheterization Laboratories
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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