Various embodiments of radially expandable stents are disclosed. In some embodiments, the stent includes a bond backbone, slot backbone, and a circumferentially extending rail connected with the bond backbone and slidably engaged with the slot backbone. In some embodiments, the stent includes annular support rings that define a plurality of cells. The annular rings can be joined with cross members. A rail member can be connected with one of the cross members and slidably engaged with another of the cross members. In various embodiments, the rail member includes a locking mechanism to facilitate one-way expansion of the stent.
