Dynamic Spine Stablizer

摘要

A dynamic spine stabilizer moves under the control of spinal motion providing increased mechanical support within a central zone corresponding substantially to the neutral zone of the injured spine. The dynamic spine stabilizer includes a support assembly and a resistance assembly associated with the support assembly. The resistance assembly generates greater increase in mechanical force during movement within the central zone and lesser increase in mechanical force during movement beyond the central zone. A method for using the stabilizer is also disclosed.

主权项

1. A dynamic stabilizer providing increased mechanical support within a central zone corresponding substantially to a neutral zone of an injured spine, the stabilizer comprising:
a support assembly; and a resistance assembly associated with the support assembly, the resistance assembly including an in-line spring arrangement that includes first and second springs acting on opposite sides of an intermediate head member; wherein the first and second springs are compression springs; wherein the resistance assembly functions both in compression and in tension; and wherein the resistance assembly generates resistance applying a first resistance to movement during movement within the central zone and a second, lesser resistance to movement while the stabilizer undergoes extended movement beyond the central zone.