Researchers with Dalio Institute of Cardiovascular Imaging at New York are working to develop 3D printed, personalized soft LAA occluding devices that are customized to a specific patient’s anatomy. The team used CT images of a person’s heart and a CAD program to isolate the surface of the LAA with a 0.5 mm thick shell, adding a valve for inflation and mechanical stabilization to the design. The molds for occluder are then printed for casting and filling.