Patent ID: 8177812

Claim:
A bone fusion device, comprising: at least two anchor members spaced apart along a longitudinal axis; and a plurality of deformable members extending axially between an adjacent pair of said anchor members, said deformable members each individually defining a rounded outer periphery extending axially along said longitudinal axis, said deformable members having an initial configuration that provides the bone fusion device with an unexpanded height in a direction transverse to said longitudinal axis, said initial configuration transitionable to a deformed configuration that provides the bone fusion device with an expanded height in a direction transverse to said longitudinal axis, said expanded height being greater than said unexpanded height; and wherein compression of said deformable members along said longitudinal axis outwardly deforms said deformable members from said initial configuration to said deformed configuration to transition the bone fusion device from said unexpanded height to said expanded height and into contact with two adjacent bone structures, wherein said rounded outer periphery of said deformable members comprises a circular outer cross section, wherein said circular cross section of at least one of said deformable members has a first outer diameter; and wherein said circular cross section of at least one other of said deformable members has a second outer diameter different from said first outer diameter.