VitaFlow LIBERTY Europe

Inclusion Criteria: 1. Subjects of age≥ 18 years 2. Subjects with severe, symptomatic, calcific aortic stenosis who are considered at high risk for surgical aortic valve replacement (AVR). 3. Subject can understand the purpose of the clinical investigation, has signed voluntarily the informed consent form and is agreeing to the scheduled follow up requirements. Exclusion Criteria: 1. Pre-existing mechanical heart valve in aortic position 2. A known hypersensitivity or contraindication to all anticoagulation /antiplatelet regimens (or inability to be anticoagulated for the index procedure), to nickel or titanium, to nitinol, to dairy products, to polyethylene terephthalate (PET) or contrast media 3. Ongoing sepsis, including active endocarditis 4. Anatomically not suitable for the VitaFlow Liberty TAV system 5. LVEF\<20% 6. Estimated life expectancy of less than 12 months 7. Any medical, social or psychological condition that in the opinion of the Heart Team precludes the subject from receiving transcatheter aortic valve replacement 8. Currently participating in another drug or device trial (excluding registries) for which the primary endpoint has not been assessed 9. Inability to comply with the clinical investigation follow-up or other clinical investigation requirements 10. Patients temporally unable to provide written informed consent (e. g. unconscious emergency patients)