The aim of the study is to assess the safety and efficacy of the device to treat coronary de novo and restenotic lesions.

Post-authorisation / after Conformité Européene (CE) marking Coroflex® ISAR NEO is a drug eluting stent system which is an improved version of the predecessor device Coroflex® ISAR which was extensively studied in the ISAR 2000 Registry. The rationale of this observational, post-market, single-armed study is to confirm the safety and efficacy of Coroflex® ISAR NEO, also as part of the manufacturer's post-market surveillance obligations in particular for the re-certification of the device.

Inclusion Criteria:

Coroflex® ISAR NEO is intended to be used for

• All common significant coronary lesions
• Target lesion length >34mm need to be covered with at least 2 stents
• Patients eligible for this study must be at least 18 years of age.
• The patient must fulfill the standard recommendations for Percutaneous Coronary Intervention (PCI) based on the last European Society of Cardiology (ESC) recommendations within his/ her regular treatment or that the use of the product has already been decided within the regular planning of the patient's treatment.

Exclusion Criteria:

• Intolerance to sirolimus and/or probucol
• Allergy to components of the coating
• Pregnancy and lactation
• Complete occlusion of the treatment vessel because of an unsuccessfully re-canalized
• Cardiogenic shock
• Risk of an intraluminal thrombus
• Hemorrhagic diathesis or another disorder such as gastro-intestinal ulceration or cerebral circulatory disorders which restrict the use of platelet aggregation inhibitor therapy and anti-coagulation therapy
• Surgery shortly after myocardial infarction with indications of thrombus or poor coronary flow behavior
• Severe allergy to contrast media
• Lesions which are untreatable with PCI or other interventional techniques
• Patients with an ejection fraction of < 30 %
• Vascular reference diameter < 2.00 mm
• Treatment of the left stem (first section of the left coronary artery)
• Indication for a bypass surgery
• Contraindication for whichever accompanying medication is necessary

The investigator of each study site has the responsibility of screening all potential patients and selecting those who fulfil the inclusion criteria of this study protocol. Therefore, at each site a study with similar inclusion criteria cannot be conducted while the recruitment of this study is in progress.

Screening will be performed during the physical examination to verify the "patient related enrolment criteria". The second part of the screening procedure will be completed during the diagnostic angiography to verify that the target lesion fulfils all "lesion related enrolment criteria".