Fig. 1From: Echocardiography-guided percutaneous closure of perimembranous ventricular septal defects without arterial access and fluoroscopyDouble-disk S-pmVSO devices and Delivery systems. a Front view of an S-pmVSO; b lateral view of an S-pmVSO; c Delivery systems. S-pmVSO: symmetrical concentric PmVSD occluderBack to article page