A Prospective Study, Single-arm, Multicentre, Observational to Evaluate Safety and Effectiveness of Stent Ultimaster Tansei Coronary Stent in Complex Coronary Lesions.

Inclusion Criteria: * Age\> 18 years. * With indication of percutaneous revascularization. * Complex coronary lesion defined as: * Left main lesion AND/OR * Lesion located at a major bifurcation (side branch \>2mm) AND/OR * Lesion located in a small vessel (\<2.5 mm reference diameter by visual estimation) AND/OR * Lesion length \> 35 mm * Informed consent signed. Exclusion Criteria: * Cardiogenic shock at the time of the PCI(Percutaneous Coronary Intervention). * Life expectancy of the patient under 1 year. * Patients included in other studies or clinical trials. * Clinical decision that excludes the use of drug-eluting stents. * Confirmed allergy to aspirin and / or thienopyridines.