کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10432028 910233 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Analyses and design of expansion mechanisms of balloon expandable vascular stents
ترجمه فارسی عنوان
تجزیه و تحلیل و طراحی سازه های گسترش استنت های عروقی قابل ارتقاء بالون
کلمات کلیدی
استنت های عروقی، مکانیک مشبک، پیش بینی انطباق،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی پزشکی
چکیده انگلیسی
Vascular stents are expanded in blood vessels with lumens larger than their cardiac counterparts. Extreme radial expansion significantly reduces the expanded length of some designs, resulting in insufficient lesion coverage and inaccurate placement. It is hypothesized that expansion mechanisms of a balloon-expandable stent, driven by plastic hinges, are controlled by the cell topology. This hypothesis is first tested for stent expansion using kinematic and kinetic analyses, followed by more detailed finite element (FE) calculations. Three balloon-expandable stent designs are laser micro-machined for experimental verification of the length-diameter relations predicted by the analytical and FE models. It is found that stent designs with positive, negative, or zero foreshortening over expansion phase can be designed by tailoring unit cell geometries and hence obtain desired length-diameter and pressure-diameter characteristics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Biomechanics - Volume 47, Issue 6, 11 April 2014, Pages 1438-1446
نویسندگان
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