The Cardia-Intrasept PFO closure device Rainer Schräder
INTRODUCTION The anatomy of the atrial septum is extremely variable. In patients with patent foramen ovale (PFO), the size of the defect may be as small as 2 mm on the one hand and as large as 2 cm on the other. The length of the PFO channel may be as short as 2 mm and as long as 10 mm. The thickness of the septum secundum may vary between 3 and 12 mm and variable redundancy of tissue may be the reason for a mobile, hypermobile, or aneurysmal septum primum.