A　novel　approach　with　partly　bridged　stent　was　proposed　in　this　paper　for　stenting　treatment　of　aortic　arch　aneurysms　to　improve　the　blood　perfusion　to　the　side　branches.　The　physiologic　blood　flows　around　the　aortic　arch　aneurysms　were　simulated　using　a　numerical　method.　Simulation　results　demonstrated　that　the　flow　activities　inside　the　partly-stented　aneurysm　model　were　significantly　diminished,　specifically　the　pressures　and　wall　shear　stresses　in　the　bleb　were　decreased,　thus　promoting　intra-aneurysmal　thrombus　development　and　attenuating　aneurysm　rupture　risk.　The　present　numerical　study　indicated　that　partly-stented　aortic　arch　aneurysms　seem　to　be　a　feasible　treatment　technique.　©　2007　IEEE.