- De-novo bifurcational native left coronary artery lesion (reference diameter LAD or LCx: 2.5 mm to 3.8 mm, length of stenosis: ≤ 20 mm, reference diameter D1/D2 or OMS1/OMS2: 2.0 mm to 3.5 mm, length of stenosis: ≤ 20 mm)