The transcatheter aortic valve implantation is the non-invasive alternative for the open heart surgery . The percutaneous beating heart interventional procedure for The Medtronic product , The CoreValve Revalving System , is 3D animated by Elite Imaging .
The procedure performed under fluoroscopy in the CathLab lasts for up to 2 - 3 hours . The self expanding multilevel frame containing the tri-leaflet porcine pericardial tissue prosthesis is specifically designed for retrograde percutaneous implantation via the 18Fr catheter .
Video 1 . The presentation of the loading procedure for the bioprosthetic valve
into the delivery catheter
If aortic stenosis is present then a single inflation of the valvuloplasty balloon is performed prior to implantation . The delivery system is advanced retrogradely over the guide wire , from the femoral artery , up to the native failing aortic valve . The catheter circular tip frame is positioned in the aortic valve annulus . The external sheath is progresively retracted . The framed valve is deployed , while pushing aside the native valve leaflets . The new prosthesis is securely anchored by the radial force of the self expanding Nitinol frame . It starts functioning immediately during placement .
Video 2 . The presentaton in detail for the implantation procedure
for the bioprosthetic valve
The side of the frame that expands in the ascending aorta optimises the hemodynamics of the blood flow system . The central level of the frame is calcaved to prevent obstruction of and allow access to the coronary artery ostia . The conforming side of the frame towards the annulus minimises the risk of paravalvular leaks . The tri-level aortic framed bioprosthesis provides secure anchoring , without migration , and with natural valve function , ensuring long term valve durability .
The results for the open heart surgery for aortic valve replacement are compared with the ones for the CoreValve Revalving System , for 795 high risk patients , two years after the clinical procedure . The non-invasive method provides improved outcomes and increased quality of life for the patient .
