A constricting band: an unusual cause of incomplete expansion of Amplatzer septal occluder device.

Various problems and complications have been reported during transcatheter closure of ostium secundum atrial septal defect with Amplatzer septal occluder. We report an unusual problem that was responsible for incomplete expansion of the waist of the device, not yet reported in world literature. A polyester band in continuation with the polyester mesh was found constricting the waist of the device, which after being cut led to successful redeployment of the device.