Patent ID: 7931675

Claim:
A dynamic stabilization device, comprising: an elongate element having an elongate aspect configured and dimensioned for spanning a pair of adjacent spinal vertebrae; first and second stops coupled to the elongate element in spaced relation; a first attachment member sized and shaped so as to permit the first attachment member to be coupled to a pedicle screw, the first attachment member adapted to be coupled with respect to the elongate element between said first and second stops such that relative motion between the first attachment member and the elongate member is permitted; a first resilient member disposed with respect to the elongate element between the first stop and the first attachment member; and a second resilient member disposed with respect to the elongate element between the first attachment member and the second stop; wherein the first and second resilient members cooperate to deliver a non-linear force displacement response to relative movement between said first stop and said first attachment member; and wherein the first and second resilient members comprise metallic coil springs concentrically disposed around the elongate element.