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(A–C) The SAPIEN XT, SAPIEN 3 and SAPIEN 3 Ultra. Image courtesy of Edwards Lifesciences; (D,E) the Evolut R and Evolut R pro. Image courtesy of Medtronic; (F,G) the ACURATE neo and ACURATE neo2. Image courtesy of Boston Scientific; (H) the ALLEGRA. Image courtesy of NEW VALVE TECHNOLOGY; (I) the Hydra. Image courtesy of SMT; (J) the Navitor device, Image courtesy of Abbott; (K) the Jena valve, Image courtesy of JenaValve Technology.
