INFLATE Study: Investigation of the Safety and Performance of a Novel PTV Balloon in Patients Undergoing TAVI for Severe Aortic Stenosis

Inclusion Criteria: 1. Symptomatic severe calcific stenosis of a native aortic valve with an AVA ≤1.0 cm2 (or AVA index ≤0.6 cm2/m2) AND mean aortic pressure gradient ≥ 40mmHg OR maximal transaortic velocity ≥4.0m/s OR Doppler velocity index ≤0.25 on site-reported echocardiography 2. Local multi-disciplinary Heart Team agrees on indication and eligibility for TAVI 3. Age ≥18 years 4. Patient has signed the Patient Informed Consent Form 5. Patient is willing and able to comply with requirements of the study 6. Patients planned for trans-femoral procedure Exclusion Criteria: 1. Mean aortic annulus diameter as measured by pre-procedural CT or internal diameter of the bioprosthesis is \<16 mm or \>30 mm 2. Echocardiographic evidence of intracardiac thrombus, mass or vegetation (site-reported) 3. Significant disease of the aorta that would preclude safe advancement of the TAVI system 4. Severe ilio-femoral vessel disease that would preclude safe performance of the TAVI procedure 5. Severe tricuspid regurgitation and/or failing right heart (site-reported) 6. Severe left ventricular dysfunction with ejection fraction (EF) \<20% (site-reported) 7. Evidence of active endocarditis or other acute infections 8. Renal failure requiring continuous renal replacement therapy 9. Untreated clinically significant coronary artery disease requiring revascularization 10. Acute MI ≤30 days prior to the index procedure 11. Symptomatic carotid or vertebral artery disease requiring intervention or carotid/vertebral intervention within the preceding 45 days 12. Cerebrovascular accident (CVA) or transient ischemic attack (TIA) ≤6 months or prior CVA with moderate or severe disability (e.g. modified Rankin scale score \>2) 13. History of bleeding diathesis or coagulopathy; acute blood dyscrasias as defined: thrombocytopenia (platelets \<80,000/µl), acute anemia (hemoglobin \<10 g/dl), leukopenia (WBC \<3000/ µl) 14. Severe (greater than 3+) mitral insufficiency (site-reported) 15. Known hypersensitivity to contrast media, which cannot be adequately pre-medicated or contraindication to anticoagulant or anti-platelet medication or to nitinol alloy or to bovine tissue 16. Currently participating in another investigational drug or device study 17. Pregnancy or intend to become pregnant during study participation 18. Unicuspid aortic valve 19. Non-calcified aortic stenosis 20. Identified high risk of coronary occlusion due to Sinus of Valsalva anatomy and/or bulky calcified aortic valve leaflets in close proximity to coronary ostia 21. Isolated Aortic Insufficiency 22. Patients with a permanent pacemaker 23. Patients with pre-existing LBBB, RBBB and AV block 2 and 3