The Xeltis synthetic polymer restorative pulmonary valve is implanted surgically and acts as a scaffold for the patient's own cells to proliferate. The valve and conduit then bioresorbs over time, leaving behind a new valve made from the patient's own cells. The hope is this will reduce or eliminate the need for numerous repeat surgeries as a pediatric patient grows.
University of Minnesota researchers used a hybrid of tissue engineering and regenerative medicine to create heart valves that can grow with the recipient. When implanted in lambs, researchers showed that the tri-tube valves worked better than current animal-derived valves with almost none of the calcification or blood clotting that the other valves showed. Photo from Syedain, et al., Tranquillo Lab, University of Minnesota