Acute postinfarction ventricular septum defect has a persistently high mortality rate due to unstable scars in the acute phase, which make surgery or occluder use unsuitable. Delayed closure increases the risk of irreversible hemodynamic deterioration. To address this, a dual latex balloon catheter was designed for temporary closure and tested in a pig model. The catheter, with a 10 French profile and 80 cm in length, includes two independent latex balloons and an anticoagulant channel to prevent thrombus formation. It was inserted via the jugular vein and guided over a 0.014-inch wire to straddle and seal the ventricular septum defect. In eight Yorkshire pigs with ventricular septum defects and acute myocardial infarction, the catheter effectively closed defects ranging from 6.1 to 10.5 mm for two weeks without complications. This innovative tool shows promise as a bridge therapy for managing acute postinfarction ventricular septum defect and warrants further evaluation.
