| CPC A61F 2/4455 (2013.01) [A61F 2002/30433 (2013.01)] | 3 Claims |
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1. An expandable interbody spacer for placement between adjacent vertebrae comprising:
a housing having lateral housing ramps, lateral housing slots and radial slots;
an articulation component rotatably coupled with the radial slots,
a frame having lateral frame ramps, lateral frame slots, and a central strut with an angled slot having an angled face;
an articulating drive screw coupled with the angled slot via pivot pins, the articulating drive screw being captured within the articulation component; and
a drive nut coupled to the articulating drive screw, wherein advancing the drive nut on the drive screw causes the drive screw to translate rearward relative to the housing and induce axial compression on the frame relative to the housing when the articulation component is in an axial state, and the pivot pins are configured to contact the frame slot at such an angle as to produce direct axial translation;
wherein the direct axial translation by the articulating drive screw will axially translate the frame and housing toward each other inducing lateral expansion of left and right lateral expansion wedges to move away from each other, which also moves left and right proximal vertical expansion shuttles away from each other, while simultaneously, axially translating the proximal vertical expansion shuttles toward distal vertical expansion shuttles, inducing both lateral expansion and vertical expansion of upper and lower endplates from a collapsed state to an expanded state.
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