The present technology relates to aneurysm devices with additional anchoring mechanisms, and associated systems and methods. In some embodiments, the aneurysm devices are endovascularly deliverable to a site proximate an aneurysm near a parent artery with bifurcating branches. The aneurysm devices can include a closure structure (102) comprising a distal-facing aspect configured to at least partially occlude the aneurysm and a proximal-facing aspect configured to arch over lumina of the bifurcating branches. The devices further include a supplemental stabilizer (103) connected to the closure structure. The supplemental stabilizer is configured to reside in the parent artery. The closure structure includes a hinge point (175) where the closure structure folds to form a loop element configured for anchoring within at least one of the bifurcating branches.
