Patent ID: 7329258
Filing Date: 2008-02-12
Classification: A61B,F16F

Abstract:
1. A damping system comprising: a damping element including: two spring elements coaxial with or parallel to a longitudinal axis of the damping element, and two axially mounted end-side connectors linked to the spring elements such that at least one of the spring elements is connected to the connectors wherein: the first spring element exhibits a spring rate F and has first and second ends positioned between the two end-side connectors, the second spring element exhibits a spring rate f and has first and second ends positioned between the two end-side connectors, the spring rates F and f are different from each other, one spring element comprises a spring coil; the damping element is prestressed; and at least two bone fixation elements selected from the group comprising pedicle screws and pedicle hooks, wherein each of the bone fixation elements includes a duct for receiving the end-side connectors so that the damping element can span adjacent vertebra.