Figure Legends
Figure 1 . The comparison of procedural success and failure rates without using rescue tools.
Figure 2 . The distribution and comparison of major complications according to the mechanical dilator sheath types.
Figure 3 . The distribution and comparison of minor complications according to the mechanical dilator sheath types.
Figure 4 . Kaplan-Meier curve illustrating the cum suvival of TightRailTM and Evolution® groups during long-term follow-up (p<0.001, log-rank).