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Figure 1c. Thoracic aortic stent-grafts. (a) Photograph shows the Talent stent-graft (Medtronic Vascular, Santa Rosa, Calif), which has an internal nitinol skeleton, a polyester membrane, and a proximal uncovered stent without barbs (arrowheads). (b, c) Photographs show the Zenith stent-graft (Cook, Bloomington, Ind), which has a steel skeleton, a membrane that is outside the metallic cage at the extremities of the stent-graft for better sealing, and no proximal uncovered stent (to prevent vascular erosion at proximal aortic curvatures). The stent-graft also has anchoring barbs at its extremities (arrowheads in c).
