This study is designed for 25 subsequent patients with coronary heart disease to complete the study per protocol. Eligible patients shall exhibit a bifurcational lesion in the native left coronary artery (reference diameter LAD or LCx: 2.5 mm -4.0 mm, length of stenosis: ≤30 mm, reference diameter D1/D2 or OMS1/OMS2: 2.0 mm-3.5 mm, length of stenosis: ≤ 30 mm) in need of percutaneous coronary intervention. Eligible patients may have single or multivessel coronary artery disease.