Patent ID: 8414619
Filing Date: 2013-04-09
Classification: A61B

Abstract:
1. A vertebral rod assembly comprising: an elongated first rod section; an elongated second rod section spaced from the first rod section; the first and second rod sections extending along a common centerline; an intermediate section attached to each of the rod sections and bridging therebetween, the intermediate section having a curved interior surface that faces towards the common centerline; a pocket formed between the spaced apart first and second rod sections, the pocket being bounded on a first side by the intermediate section and being open along a second side opposite from the intermediate section; an elastic bumper disposed in the pocket and formed of a different material than the first and second rod sections and the intermediate section, the elastic bumper attached to the intermediate section at a plurality of locations along a portion of the curved interior surface that is offset from the common centerline; the intermediate section and the elastic bumper configured to provide variable resistance to movement of the first and second sections.