A braided stent system includes an expansion ring attached to internal andexternalsurfaces of a lumen, A frame of the ring may impart an outwardly expandingradial force to thelumen, the frame including a plurality of elongate members joined at acoupling and at first andsecond intersections opposite the coupling. A clip can extend from theintersections and can beoperable to slidably secure the frame to the inner and outer surfaces of thelumen.
