Enhanced biological fixation of grafts

摘要

A stent graft (1) has a substantially tubular body having a proximal and a distal end, at least the proximal end (5) comprising a region intended in the use to engage a landing zone in a vessel in the body in use, the region comprising a mechanical treatment to enhance biological fixation to the landing zone. The mechanical treatment can be provision of apertures (92), provision of relatively rigid engagement portions (17), impregnation with a SIS gel or digest (72) and mounting of a cuff or collar of SIS (60) or some other biocompatible material.