Comparing the Safety and Efficacy of Paclitaxel Controlled Release Balloon Catheter (VasoguardTM) in the Treatment of Small Coronary Vessel Stenosis With a Common Coronary Balloon Catheter (Maverick2)

Exclusion Criteria

• •Patient that in the opinion of the investigator is not appropriate for this trail; Pregnancy and lactation female patients; Patient has a life expectancy of less than 2 years; Severe congestive heart failure or NYHA IV heart failure; Patient who have bleeding constitution, cannot use antithrombotic and antiplatelet drugs; Patient that happened acute myocardial infarction within a week; Patient who happened stroke within six months; Patient who with severe renal failure (GFR≤30ml/Min); Patient has received heart transplantation; Patient who cannot tolerate aspirin and / or P2Y12 receptor inhibitor drugs; Patient who has allergy to paclitaxel, PLGA or contrast agent; Peptic ulcer or gastrointestinal bleeding within the prior 6 months; Patients who are participating in another drug or device clinical trail, which have not completed the primary endpoint follow- up period.
• •Angiographic relevant： Merge three or more coronary small vessel lesions; Target vessel with extensive thrombosis evidence; Restenosis of vein graft after bypass surgery; Target lesion proximal exist seriously distorted or severe calcified lesion.