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동정맥루 혈관 모사 및 μ-PIV 기법을 이용한 유동장 및 전단응력 분석
송륜근(Ryungeun Song),이준권(Jungwon Lee),문영광(Yeonggwang Mun),박성민(Seongmin Park),최홍석(Hongseok Choi),이진기(Jinkee Lee) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
Radio-cephalic arteriovenous fistula (AVF) is the operation for achieving vascular access for hemodialysis. Even though it is very reliable and well known method, it still has a high rates of early failure depending on the vessel condition. The hemodynamic shear stress contributes these failures; the pathophysiology of vascular access failure due to thrombosis secondary to stenosis formation as well as vascular access reocclusion after percutaneous interventions. To understand this mechanism and predict the AVF failure, we fabricated in-vitro three dimensional radio-cephalic arteriovenous fistula via Poly(dimethylsiloxane) a.k.a. PDMS and 3D printing technology. The micro-particle image velocimetry (μ-PIV) considering the cardiac pulse cycle used to measure the velocity field within the artificial blood vessel and confirmed by the numerical simulation. The result showed that the in-vitro AVF model agrees well with the simulations. This research would give the future possibility to use to reduce the in-vivo AVF failure for various conditions for each patient.