Devices, delivery systems and techniques for an occlusion device for the closure of physical anomalies, such as an atrial septal defect, a patent foramen ovale (PFO), and other septal and vascular defects are described. The devices, delivery systems and techniques relate to, but are not limited to, a...http://www.google.co.uk/patents/US8109946?utm_source=gb-gplus-sharePatent US8109946 - Adjustable length patent foramen ovale (PFO) occluder and catch system
