US Patent 10076428 Expansion ring for a braided stent

A braided stent system includes an expansion ring attached to internal and external surfaces of a lumen. A frame of the ring may impart an outwardly expanding radial force to the lumen, the frame including a plurality of elongate members joined at a coupling and at first and second intersections opposite the coupling. A clip can extend from the intersections and can be operable to slidably secure the frame to the inner and outer surfaces of the lumen.