A graft provided with a flexible sealing member to substantially prevent
blood from leaking between the graft a lumen into which the graft is
placed. In one embodiment, the flexible sealing member may be pressed
against the vascular wall by an outwardly biased spring means attached to
the sealing member. In other embodiments, the sealing member may be
self-positioning upon deployment of the graft. The sealing member also
may be formed into the shape of a toroid, which may be filled with
thrombogenic material causing blood permeating into the toroid-shaped
space to coagulate therein and hold the sealing member in place. It is
also contemplated that the sealing member be formed from tufts of frayed
yarn protruding circumferentially from the outer surface of the graft. A
method of manufacturing such tufted yarn sealing members is also
disclosed.