Supplementary Material
Supplemetal Figure 1 . Post-Myocardial Infarction Ventricular Septal Defect (PIVSD) Device (Occlutech Holding AG, Switzerland). Available sizes, corresponding to the length of the waist major axis, vary from 16 mm to 36 mm as well as disc diameters (from 28/26 mm to 49/44 mm). Proximal disc diameters are smaller than distal disc ones. The connecting elliptical waist length (h) is 10 mm for all device’s sizes. The dedicated delivery system (Flex II Pusher and Pistol Pusher) sizes range from 9-F to 14-F.
Supplemetal Figure 2 . The Occlutech PIVSD occluder consists of two self-expanding rounded discs joined together by a 10-mm flexible elliptical waist. The discs and the elliptical waist are composed of a nitinol-wire mesh with “shape-memory” properties. Thin non-woven polyethylene terephthalate patches are sutured into both discs and inside the waist to ensure rapid sealing of the defect while optimizing ingrowth of tissue. Two radiopaque gold markers located on the distal disc are intended to facilitate proper positioning of the device. The size of the device corresponds to the length of the waist major axis (orange line, b: side view). Waist length (h) is 10 mm for all device’s sizes. The welded ball is located on the proximal disc (with permission of Occlutech® Holding AG, Switzerland).
Supplemental Figure 3 . On the proximal side of the occluder, the wire braiding ends in a welded ball that serves as an adapter (ball-connector) for the dedicated delivery system (Flex-Pusher II).