Patent ID: 9333091
Filing Date: 2016-05-10
CPC Classification: A61B,A61F,A61K,A61L

Claim Text:
1. An intervertebral fusion device for insertion between upper and lower vertebral endplates, the device comprising: a) a first member having an outer bearing surface for bearing against a respective vertebral endplate, an opposed inner surface, a leading wall between the outer bearing surface and the inner surface, a trailing wall between the outer bearing surface and the inner surface, and a curved longitudinal length between the leading and trailing walls; b) a second member having an outer surface, an opposed inner surface, a leading wall between the outer surface and the inner surface, a trailing wall between the outer surface and the inner surface, and a curved longitudinal length between the leading and trailing walls; and c) a core disposed within one of the members and running longitudinally substantially along the longitudinal length of the member in which it is disposed, wherein the core is a wire; wherein at least a portion of the outer surfaces are substantially parallel to each other, wherein at least a portion of the inner surfaces are substantially parallel to each other, wherein one of the inner surfaces includes a longitudinal rail, the other of the inner surfaces includes a mating longitudinal groove, and the rail is slidably received in the groove so as to guide the second member along the first member, and wherein the inner surfaces are longitudinally slidable against each other so that the leading wall of the second member can initially contact the first member near the trailing wall of the first member and then upon sliding thereupon substantially approach the leading wall of the first member while the trailing wall of the second member can simultaneously substantially approach the trailing wall of the first member.