The present embodiments provide apparatus suitable for treating a medical condition at a target site. In one embodiment, the apparatus has a plurality of strands, each having proximal and distal regions, wherein the plurality of strands are twisted in a generally helical manner to form a tubular shape. The proximal and distal regions of each of the plurality of strands have a contracted configuration adapted for delivery to the target site. Further, the distal region of at least one of the plurality of strands has an expanded, radially deployed configuration adapted to facilitate treatment of the medical condition. The distal region of at least one of the plurality of strands may be deployed in a self-expanding or balloon-expandable manner.