The　flow　resistance　of　stent　with　different　shape　of　wire　cross-section　can　be　considered　as　a　factor　that　influences　the　condition　of　inflow　and　outflow　through　the　stent　wire.　Different　from　the　traditional　stents,　a　novel　stent　with　triangular　wire　cross-section　was　proposed,　and　numerical　simulations　were　performed　to　compare　the　hemodynamic　effect　of　the　novel　stent　with　that　of　traditional　ones.　Three　constructed　aneurysm　models　were　treated　with　a　different　kind　of　stent　separately,　including　one　with　bare　circular　wire　cross-section　stent　(named　CM),　one　with　bare　rectangular　wire　cross-section　stent　(named　RM),　one　with　bare　triangular　cross-section　stent　(named　TM).　An　unstented　aneurysm　model　was　also　constructed　to　serve　as　a　control　(named　UM).　Numerical　simulations　of　the　fluid-structure　interaction　in　these　four　models　were　performed　under　the　same　boundary　conditions　using　finite　element　method.　The　simulation　results　demonstrated　the　resistance　of　the　novel　stent　is　lower　than　RM　stent,　but　higher　than　that　of　CM　stent.　TM　stent　attributes　a　higher　velocity　decreasing　and　a　longer　turnover　time　compared　with　CM　stent.　The　distribution　of　wall　shear　stress　indicated　the　possibility　of　aneurysm　development　along　the　distal　wall　was　higher　than　the　proximal　wall,　and　the　top　of　aneurysm　was　in　the　highest　risk　of　rupture.　©　2013　Springer-Verlag.