Detachable balloon devices were applied in the occlusion of experimental AS
Ds in 20 piglets, The detachable balloons were made from Latex; the occlude
r balloon was placed on the left atrial side and required a floppy disk and
counter-occluder(s) support from the right atrial side (17 experiments), o
r a second detachable balloon from the right side (3 experiments). Full occ
lusion was noticed in all cases. There was one device embolization in the d
escending aorta (device with a regular floppy disk and no counter-occluder)
. The device was covered by tissue in 3 to 4 weeks with the balloon flat on
the septum in approximately 2 months; it required minimal rim and no wires
in the left atrium, The double balloon model was wireless, The balloon det
achable device was found effective and safe in the occlusion of experimenta
l ASDs in piglets. Cathet Cardiovasc. Intervent 51:529-534, 2000. (C) 2000
Wiley-Liss, Inc.