Posted in Sapiosexual Alterra Adaptive Prestent and SAPIEN 3 THV for Congenital Pulmonic … August 22, 2025 The Alterra Adaptive Prestent is a self- expanding Nitinol device, partially covered with expanded polytetrafluoroethylene, in a self-sheathed delivery system. This serves as a landing zone for implantation of the SAPIEN 3 THV. https://thechipnetwork.org/alterra-adaptive-prestent-and-sapien-3-thv-for-congenital-pulmonic-valve-dysfunction-an-early-feasibility-study/