The Safety and Efficacy of 'AVI' Stent for Treating Coronary Revascularization

Inclusion Criteria: Patient must be at least 18 years of age; Ischemic heart symptom and/or myocardial ischemia, include chronic stable/unstable coronary artery disease or acute coronary syndrome(ST elevated MI and Non-ST elevated MI); At least one lesion with a diameter stenosis \>70% or more suitable for coronary stent implantation in a vessel with a reference diameter ranging from 2.5mm to 3.5mm; If the subject has multiple vessel lesions, the implanted stents must be the same brand. The staged procedure only be allowed within 3 months after procedure, the implanted stent must be the same brand stent as the index procedure; Subject has no CABG contraindication; Subject or legal representative is informed the property of the study, understand the stipulations in the protocol, ensure the compliance and sign the ICF; Exclusion Criteria: Pregnant or nursing patients and those who plan to become pregnant up to 1 year post index procedure; Subject has a tendency to bleeding or coagulation disorders, or has contraindication of antiplatelet and/or anticoagulant therapy, or can't accept the continue DAPT within 6 months; Poor compliance or expectation of life less than 1 year; Implanted any brand stent in the same target vessel within 1 year; Left Ventricular Ejection Fraction (LVEF) of \<30%; Cardiogenic shock or haemodynamics abnormal, needs inotropic agents or mechanical support; The subject is allergic to asprin, heparin, clopidogrel/ticlopidine, stainless steel alloy, arsenic trioxide, sirolimus, styrene-butene-styrene or polylactic acid(PLA) polymer and contrast agent; Severe tortuous and/or heavy calcification lesion; Two or more proximal chronic total occlusion lesion; Bifurcation lesions with double stents; The subject has multi-vessel lesions but can not be implanted the same brand stents; The subject that the investigator considers he/she was unfit to implant the AVI stents and Firebird 2 stents; The subject attended other drug/device study or in the follow-up period.