An attachment member for securing a graft material to a vessel includes a conduit portion for attachment to said graft material. The attachment member has first and second anchor wings formed on opposite sides of an end of said conduit portion. The anchor wings are biased to extend substantially perpendicular to an axis of the conduit portion. The first and second anchor wings have arcuate shapes around substantially collinear axes for the anchor wings to define a flow path within a vessel on opposite sides of the conduit portion.
