Special VSD occluder for closure of the multi fenestrated Hyperion™ VSDO Multi Fenestrated Membranousmembranous VSD. The LA disc is an extra large disc compared to the RA disc. The waist length runs from 3.2 to 5 mm. covering a wide range of septum thickness. The VSDO Multi Fenestrated Membranous closure device is only available with hub, sizing from 4.0 to 18 mm sizes. VSD occluders are compatible with the Orbit-V delivery systems.