Fig. 4From: Device closure of diverse layout of multi-hole secundum atrial septal defect: different techniques and long-term follow-upDevice closure of type B and C multi-hole atrial septal defects. A Defects layout of type B. B The small defect was occluded first. C Then the delivery sheath was advanced through the large defect. D and E Double-device occlusion was achieved. a Defects configuration of type C cribriform. b The guiding sheath was advanced through the middle small central defect c introducing the flexible guidewire through the defect. d The delivery sheath was passed through the defect over the wire. e The single device occluded all the defectsBack to article page