This specification is directed to stents that are configured to better deploy and remain implanted across a fusiform aneurysm. Specifically, these stents include one or more anchoring members that radially expand within a fusiform aneurysm. In some instances, the anchoring members radially expand to a diameter that is larger than that of regions of vessels adjacent to the fusiform aneurysm to help prevent stent migration. The anchoring members can be a bulbous layer, a plurality of loops, a plurality of arms, a plurality of longitudinal wires, or one or more hydrogel rings.