Patent ID: 11963881
Assignee: WARSAW ORTHOPEDIC, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 18:
19. An interbody device deployable between a contracted position and an expanded position, the interbody device comprising:
a spinal implant, the spinal implant having a longitudinal axis and a transverse axis perpendicular to the longitudinal axis, a proximal end and a distal end disposed on opposite ends of the spinal implant, and first and second lateral surfaces disposed on opposite sides of the spinal implant, the spinal implant comprising:
a superior endplate having an outside surface including at least one bone screw relief, the superior endplate including a first plurality of guide walls and a first plurality of inclined ramps, each guide wall of the first plurality of guide walls extends along an inside surface of the superior endplate in a direction parallel to a contact surface of a corresponding inclined ramp of the first plurality of inclined ramps;
an inferior endplate having an outside surface including at least one bone screw relief, the inferior endplate including a second plurality of guide walls and a second plurality of inclined ramps, each guide wall of the second plurality of guide walls extends along an inside surface of the inferior endplate in a direction parallel to a contact surface of a corresponding inclined ramp of the second plurality of inclined ramps;
an anterior endplate comprising a plurality of bone screw apertures, each bone screw aperture being configured to receive a corresponding bone screw therein and orient the corresponding bone screw such that the corresponding bone screw extends over a corresponding one of the at least one bone screw relief of the superior endplate and the at least one bone screw relief of the inferior endplate;
a moving mechanism operably coupled to the superior endplate and the inferior endplate and positioned therebetween, the moving mechanism including:
a first trolley and a second trolley disposed opposite the first trolley, the first and second trolleys having a plurality of projections and a plurality of wedges, each projection being configured to move along a corresponding guide wall of the first and second plurality of guide walls and each wedge being configured to contact and move along a corresponding ramp of the first and second plurality of ramps;
a first set screw and a second set screw opposite the first set screw, the first set screw being operably coupled to the first trolley and the second set screw being operably coupled to the second trolley, the first set screw and the second set screw being configured to rotate in a first direction and a second direction about a rotation axis, the rotation axis projecting in a longitudinal direction of the moving mechanism; and
an adjustment aperture exposing internal circumferential surfaces of the first and second set screws, respectively,
wherein the first set screw is configured to move the first trolley in the longitudinal direction of the moving mechanism by rotation of the first set screw along the rotation axis and the second set screw is configured to move the second trolley in the longitudinal direction of the moving mechanism by rotation of the second set screw along the rotation axis,
wherein the moving mechanism is configured to operably adjust a spacing between the superior and inferior endplates upon simultaneous rotation of the first and second set screws along the rotation axis, and
wherein the moving mechanism is configured to operably adjust an angle of inclination between the superior and inferior endplates upon rotating either one of the first set screw and second set screw along the rotation axis.