Post-Market Surveillance Registry to Monitor Performance and Safety of V8 Device

Inclusion Criteria: * Symptomatic severe aortic stenosis (AS) patients who are not suitable candidates for aortic valve replacement surgery at the time of BAV procedure. * Subject meets the Indication For Use. * Probable survival to hospital discharge. * Subject is competent, willing to comply with evaluations, understands risks, benefits and alternatives and has signed the Informed Consent Form. Alternatively, the legal guardian of the patient is able to give consent to participate. Exclusion Criteria: * Patient has undergone previous AVR * Greater or equal to 3+ aortic insufficiency by echocardiogram obtained prior to planned BAV or intra-procedural predilation TAVR procedure * Non-valvular AS * Known congenital AV abnormality (e.g., bicuspid AV) * Cardiogenic shock, as defined by a consistent systolic blood pressure \<80 mmHg off vasopressors or \<90 mmHg on vasopressors. * Bacterial endocarditis ≤ 12 months prior to planned BAV procedure * Unable to take aspirin (acetyl salicylic acid, ASA) or thienopyridine * Any illness or condition which, in the Investigator's judgment, will compromise patient safety, or interfere with the interpretation of the treatment results * Echocardiographic evidence of intracardiac mass, thrombus or vegetation.