The Cook Zenith endovascular graft.

From its early release in 1994, the Zenith endovascular graft presented with a more complex but very controlled deployment mechanism. It was loaded into small and flexible introduction systems. The main difference with most early grafts was the intended suprarenal fixation with a bare stent including hooks and barbs. This suprarenal fixation proved to be both safe and efficient. Several improvements were made over the years, resulting in the Zenith Tri-Fab stent-graft. Major advantages of the Tri-Fab include availability of stock products and the versatility with regard to distal diameter and lengths. Finally, the Zenith graft acted as the platform in the development of fenestrated and branched grafts.