The New Challenge for Heart Endocarditis: From Conventional Prosthesis to New Devices and Platforms for the Treatment of Structural Heart Disease

Figure 7

Last generation of THV. (a) ^ℷThe Portico resheathable transcatheter aortic valve system (Abbott Structural Heart, St Paul, MN, USA). (b) ^†The ACURATE neo (Boston Scientific, Marlborough, MA, USA) self-expanding THV. (c) Lotus mechanically expanded valve (Lotus Valve System (MEV; Boston Scientific Corp). (a) Portico valve is designed with large, open cells, and intra-annular leaflet placement to preserve flow and access to the coronary arteries after deployment. The Portico valve was delivered by a flexible, first-generation Portico Delivery system, which had an 18F outer diameter for the small valves (23 and 25 mm) and a 19F outer diameter for the larger valves (27 and 29 mm). (b) The ACURATE neo bioprosthesis consists a self-expanding nitinol frame with three porcine pericardial leaflets and a stent body with an outer and inner pericardial skirt. (c) The MEV combines 3 bovine pericardial tissue valve leaflets and a braided nitinol frame with a polycarbonate-based urethane adaptive seal.

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