The Edwards SAPIEN Transcatheter Aortic Heart Valve is a prosthetic heart valve designed for transcatheter aortic valve replacement (TAVR) procedures. It is used to treat patients with severe aortic stenosis who are at high risk of complications from open-heart surgery. The valve is made of bovine pericardial tissue and is mounted on a balloon-expandable cobalt-chromium frame, allowing it to be implanted via a catheter without the need for open-heart surgery.