Occlutech® Figulla® Flex II - The Third Generation ASD and PFO Occluders Since developing the first unique Occlutech occluder in 2003, over 20,000 ASD and PFO occluders have been delivered to over 50 countries around the world. Occlutech’s track record regarding performance and safety is excellent while we are still dedicated to innovating and constantly improving our products. The very flexible technology allows our products to adjust and fit a wide variety of geometries. Flex II, the third generation occluder, is now launched following what likely is already one of the best performing range of products available.