Patent ID: 8906058

Claim:
In a tethered coil device adapted for treatment of a body lumen, the tethered coil device including a coiled member and a tether connected with the coiled member of the device at an attachment point, a proximal tether portion of the tether extending proximally beyond a proximal end of the coiled member and adapted for application of a proximal longitudinal force on the coiled member, the improvement in the tethered coil device comprising: said coiled member including at least one first shape segment longitudinally connected with at least one second shape segment, the first shape segment having a first cross sectional area and the second shape segment having a second cross sectional area that is less than the first cross sectional area, wherein the second cross sectional area is U-shaped, the coiled member having a proximal end and a distal end, a first generally linear configuration, and a secondary complex three dimensional configuration; and said tether including a distal tether portion and an intermediate tether portion between said distal tether portion and said proximal tether portion, the intermediate tether portion being slidingly disposed generally longitudinally inside a lumen of said at least one first shape segment and outside a wall of said at least one second shape segment, wherein application of the proximal longitudinal force changes a shape of the coiled member from the first generally linear configuration to the secondary complex three dimensional configuration.