Filamentary devices for treatment of vascular defects

A method of treating a cerebral aneurysm within a cerebral vasculature of a patient, comprising the steps of:

• advancing an implant in a microcatheter to a region of interest in the cerebral vasculature, wherein the implant comprises:
• a 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, the expanded state having a proximal portion and a distal portion, wherein each of the plurality of filaments has a proximal end and a distal end, and wherein the proximal ends of each of the plurality of filaments are gathered by a proximal hub;
• deploying the implant within the cerebral aneurysm, wherein the permeable shell expands to the expanded state in the interior cavity of the aneurysm;
• delivering energy to the deployed implant;
• and
• withdrawing the microcatheter from the region of interest after deploying the implant.