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    Compliance and Longitudinal Strain of Cardiovascular Stents: Influence of Cell Geometry

    Source: Journal of Medical Devices:;2011:;volume( 005 ):;issue: 004::page 41002
    Author:
    Tho Wei Tan
    ,
    A. Srikantha Phani
    ,
    Graeham R. Douglas
    ,
    Timothy Bond
    DOI: 10.1115/1.4005226
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: A systematic study on the influence of the cell geometry of a cardiovascular stent on its radial compliance and longitudinal strain is presented. Eight stent cell geometries—based on common lattice cells—are compared using finite element analysis. It is found that, for a given strut thickness, the radial compliance depends on the shape of the cell and is intimately connected with the longitudinal strain through effective Poisson’s ratio, which depends on the cell geometry. It is demonstrated experimentally that a hybrid stent containing both positive and negative Poisson’s ratio cell lattice geometries exhibited very low values of longitudinal strain. This study indicates that cell geometries may be tailored to minimize longitudinal stresses imposed by the stent onto the artery wall.
    keyword(s): Geometry , stents AND Stress ,
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      Compliance and Longitudinal Strain of Cardiovascular Stents: Influence of Cell Geometry

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    http://yetl.yabesh.ir/yetl1/handle/yetl/147192
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    contributor authorTho Wei Tan
    contributor authorA. Srikantha Phani
    contributor authorGraeham R. Douglas
    contributor authorTimothy Bond
    date accessioned2017-05-09T00:46:07Z
    date available2017-05-09T00:46:07Z
    date copyrightDecember, 2011
    date issued2011
    identifier issn1932-6181
    identifier otherJMDOA4-28021#041002_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/147192
    description abstractA systematic study on the influence of the cell geometry of a cardiovascular stent on its radial compliance and longitudinal strain is presented. Eight stent cell geometries—based on common lattice cells—are compared using finite element analysis. It is found that, for a given strut thickness, the radial compliance depends on the shape of the cell and is intimately connected with the longitudinal strain through effective Poisson’s ratio, which depends on the cell geometry. It is demonstrated experimentally that a hybrid stent containing both positive and negative Poisson’s ratio cell lattice geometries exhibited very low values of longitudinal strain. This study indicates that cell geometries may be tailored to minimize longitudinal stresses imposed by the stent onto the artery wall.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleCompliance and Longitudinal Strain of Cardiovascular Stents: Influence of Cell Geometry
    typeJournal Paper
    journal volume5
    journal issue4
    journal titleJournal of Medical Devices
    identifier doi10.1115/1.4005226
    journal fristpage41002
    identifier eissn1932-619X
    keywordsGeometry
    keywordsstents AND Stress
    treeJournal of Medical Devices:;2011:;volume( 005 ):;issue: 004
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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