Patent ID: 9486328
Filing Date: 2016-11-08
CPC Classification: A61F

Claim Text:
1. An expandable intervertebral cage device adapted to be implanted into an intervertebral disc space in a patient's body, comprising: a first base plate having a first outer bearing surface configured to interface with a first vertebra of the intervertebral disc space; a second base plate having a second outer bearing surface configured to interface with a second vertebra of the intervertebral disc space; a proximal block mechanically coupled to the first base plate and the second base plate, wherein the proximal block comprises internal threading; a distal block comprising an internal passage; only two arm assemblies, wherein a first one of the two arm assemblies is arranged on a first side of the device and a second one of the two arm assemblies is arranged on a second side of the device, wherein each of the only two arm assemblies comprises: wherein the screw is threadedly coupled to the internal threading of the proximal block, and the distal block includes a non-threaded rotational coupling to which the screw is non-threadedly rotationally coupled.