Page 4 - Virtual Vascular Vol 15
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Polymer Sealing EVAR
















































































           The OVATION Alto stent graft (cover, and previous page) uses a unique technology
           where a fluid polymer is injected into the main body of a stent graft to provide sup-

           port and seal.  Sealing is via the top “ring” which has no self-expanding properties thus
           avoids aortic neck dilatation and migration.  It has the lowest profile and suitable for
           patients with poor access.  The main disadvantages are the large suprarenal stents,
           and the lack of good secondary intervention options when a Type Ia leak occurs.

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