Figure 1.

Covered diamond stent (Microvasive; Boston Scientific Corporation, Natik, Massachusetts, USA). The stents used in this study were 10 mm in width and 60 or 80 mm in length, with the length determined on the basis that the covered portion should be at least 20 mm longer than the stenotic lesion. The stent was partially covered with polyurethane. The thickness of the covered membrane was 50–60 μm. The stents were left uncovered for 5 mm from both ends to prevent their migration or movement.