Efficacy and Safety of Interwoven Self-Expandable Nitinol Stent for Femropopliteal Arterial Occlusive Diseases

Stenting of the femoro-popliteal segment is indicated in case of elastic recoil, flow-limiting dissection, insufficient per- cutaneous transluminal angioplasty (PTA) or long lesion length. However, in-stent restenosis (ISR) or fracture after endovascular treatment remains a serious concern, especially for lesions of a long segment or near the knee joint. Besides the current availability of covered or drug-coated stents, there is the self-expandable bare-metal Nitinol stent which rapidly evolved during the last decade from closed-cell to open-cell and, more recently, to interwoven stents. interwoven nitinol stent design of fully connected structures facilitates a continuous but a traumatic synergy between the stent and vessel wall and hence enables axial compliance. Investigators here conduct a prospective study to evaluate the efficacy and safety of self- expandable nitinol stent especially interwoven supera stent (IW; Supera Veritas®; Abbott Vascular, Santa Clara, CA, USA) in femoropopliteal complex occlusive lesions.