Filamentary devices for treatment of vascular defects

A method of treating method for treating an aneurysm having an interior cavity and a neck, comprising the steps of:

• advancing an implant in a microcatheter to a region of interest in an artery, wherein the implant comprises a resilient self-expanding permeable shell including a radially constrained elongated state configured for delivery within a catheter lumen, an expanded state with a longitudinally shortened configuration relative to the radially constrained state, and a plurality of elongate filaments that are woven together to form a mesh and define a cavity of the permeable shell, wherein the permeable shell comprises a proximal and a distal portion, and a plurality of stiffening elements associated with the proximal portion of the permeable shell, wherein the plurality of stiffening elements comprise a plurality of DFT wires;
• deploying the implant within the aneurysm, wherein the permeable shell expands to the expanded state in the interior cavity of the aneurysm;
• and
• withdrawing the microcatheter from the region of interest after deploying the implant.