Animation demonstrating how Xeltis’ heart valves enable the patient’s own body to naturally restore a new heart valve through a therapeutic approach called Endogenous Tissue Restoration (ETR). With ETR, the patient’s natural healing system develops tissue that pervades Xeltis’ heart valve, forming a new, natural and fully functional valve within it. As ETR occurs, Xeltis implants are gradually absorbed by the body. ETR is enabled by bioabsorbable polymers based on Nobel prize awarded science.