The patch springs into place through the catheter onto the hole, effectively sealing it. The entire procedure usually takes two hours or less.Select a state and find a physician near you who is Gore-certified on GORE CARDIOFORM Septal Occluder for PFO closure procedures. The South Palm Cardiovascular Associates team specializes in treating conditions like ASD and PFO using minimally invasive techniques. In SW Florida, only Lee Health's specially trained physicians perform PFO repair. Call 239-445-4775 for more information. For children needing treatment for a PFO, we use cardiac catheterization to close the defect with a small device. Learn more about the causes and complications of this condition in which a hole in the heart doesn't close the way it should after birth.