Patent ID: 8545573

Claim:
An occluding device for occlusion of a body cavity, the device comprising: a primary coil having a proximal end, a proximal portion, a distal portion, and a distal end, the proximal portion extending longitudinally from the proximal end to the distal portion, the distal portion extending longitudinally from the proximal portion to the distal end, the primary coil having an initial tension along the distal and proximal portions and being configured to form a secondary coil having a general helical shape in an expanded state; a set of first fibers attached to the primary coil and extending therefrom for occlusion of the body cavity along at least the distal portion of the primary coil; and a set of second fibers attached to the primary coil at a plurality of areas longitudinally along the primary coil at radially outer locations of the secondary coil, the set of second fibers comprising a plurality of strands, each strand of the set of second fibers being at least twice as long as each of the first fibers and attached to the primary coil at a plurality of longitudinal locations along the primary coil and extending longitudinally along the primary coil substantially from the proximal end of the coil to the distal end of the coil, the set of second fibers defining an occlusion sail disposed longitudinally along the primary coil, the set of second fibers being configured to follow the general helical shape of the secondary coil when the coil is in the expanded state for enhanced occlusion of the body cavity.