problem with balloon catheter

Intervention for coronary bifurcation lesion is about 10~20% of entire percutaneous coronary intervention (PCI). Bifurcation lesion is difficult to be treated and prognosis of PCI at bifurcation lesion has been poorer compared to that at non-bifurcation lesion. Furthermore, occlusion of side branch frequently occurred during PCI. Several techniques to prevent occlusion of side branch have been developed, but outcomes are not to be satisfied. H-side branch stent is developed to treat coronary side branch lesion and composed of proximal, connecting and distal parts. In vivo study performed in pigs showed effective H-side branch stent. This study is to confirm safety and efficacy of H-side branch stent for treatment of coronary side branch lesion.

Inclusion Criteria:

• Older than 20 years old
• Patient with angina or asymptomatic ischemic cardiomyopathy who is required to be treated with stent at coronary bifurcation lesion
• Bifurcation lesion with 2.5~4.0mm of main vessel diameter, <30mm of main vessel length and ≥2.0mm of branched vessel diameter

Exclusion Criteria:

• Acute myocardial infarction
• Confirmed or suspicious presence of thrombus in target lesion
• In-stent restenosis lesion
• Visual angulation with ≥75°
• Lesion with severe calcification or severe tortuosity
• Left main lesion
• Chronic total occlusion lesion
• Graft lesion
• Contraindication to antiplatelet drugs
• Left ventricular dysfunction (LVEF ≤40%)
• Severe hepatic dysfunction (≥2.5 times than reference of AST or ALT)
• Renal dysfunction (serum Creatinine > 2.0mg/dL)
• History of cerebral hemorrhage, pulmonary or gastrointestinal bleeding
• Hypersensitivity of aspirin, clopidogrel or contrast media
• Pregnant woman or possibility of pregnancy during clinical study period