在金属药物洗脱支架年代，双支架术是处理复杂冠状动脉分叉病变的必要选项，但其技术复杂、疗效不确定。生物可降解支架的面世给复杂冠状动脉分叉病变的介入治疗注入了新的希望，但其安全性与可行性尚不清楚。本研究将在不同分叉部解剖特征的仿真冠状动脉模型上，应用生物可降解支架体外模拟5种既往被认为较好的冠状动脉双支架术式，重点观察各候选双支架术式在人工血管分叉部的形态学和流体力学特征、对比其优缺点，为遴选生物可降解支架双支架术式奠定基础，为防控支架内血栓和再狭窄提供理论依据。

The 2-stent techniques are mandatory for treating of complex coronary artery disease in the era of the metal drug-eluting stents regardless of technical complexity and efficacious uncertainty. The bioresorbable vascular scaffolds provide a new hope for percutaneous treatment of complex coronary bifurcation lesions; however, it remains unclear above their clinical safety and feasibility. In the present study, in a coronary bifurcation phantom designed with considering of the different characteristics of major coronary bifurcated anatomy, we simulated scaffold implantation of five sorts of favorable 2-stenting techniques which were used in the era of metal drug-eluting stents, and investigated the local bifurcated morphologies and hemodynamics for identifying of their merit and demerit. The expected results will lay the foundation for selection of the optimal 2-stent techniques and provide rationale for prevention of in-scaffold thrombosis and restenosis as well.