Dynamic stabilization device for treating degenerative diseases of spinal column, has support- and mating surfaces formed for clamping by load of spring element, and retaining elements movably mounted against each other in direction

摘要

The device has retaining elements (1, 2) with attachment regions (11, 21) connected with pedicle screws (P1, P2) and a middle region (y) for retaining a resilient spring element (3). The middle region of the retaining elements is formed by support surfaces (122, 222) and mating surfaces (14, 24). The support- and mating surfaces are connected with each other by connectors (13, 23). The support- and mating surfaces are formed for clamping by compressive load of the spring element. The retaining elements are movably mounted against each other in a longitudinal direction. The resilient spring element is a pressure spring, a laminated cup spring and a laminated wave spring.