Figure 5. Percutaneous pulmonary valves for the large outflow tract.

The left panel is a picture of the Edwards Alterra™ stent, designed to be placed in the right ventricular outflow tract in patients after transannular patch repair for Fallot’s tetralogy. The nitinol stent hosing (seen in the photo) provides a landing zone for a 29 mm Sapien™ valve. The right panel is a photo of Medtronic’s Harmony™ valve. This valve stent design has porcine pericardial valve leaflets sewn into the nitinol framework.