Expandable interbody

An expandable implant for use in a surgical procedure, the expandable implant comprising:

• a distal cage;
• a proximal cage opposite the distal cage;
• a drive screw connecting the distal cage to the proximal cage;
• a top expandable assembly, the top expandable assembly having:
• a distal portion in communication with a top surface of the distal cage,
• a proximal portion in communication with a top surface of the proximal cage,
• a first top endplate having a distal end in connection with the distal portion and a proximal end in connection with the proximal portion, and
• a second top endplate adjacent to the first endplate, the second endplate having a distal end in connection with the distal portion and a proximal end in connection with the proximal portion;
• and
• a bottom expandable assembly, a distal portion of the bottom expandable assembly in communication with a bottom surface of the distal cage and a proximal portion of the bottom expandable assembly in communication with a bottom surface of the proximal cage,
• the bottom surface of the distal cage opposite the top surface and the bottom surface of the proximal cage opposite the top surface,
• the distal portion of the top expandable assembly comprising a hook for mechanically connecting to a distal end of a first bottom endplate of the bottom expandable assembly, and
• the distal portion of the bottom expandable assembly comprising a hook for mechanically connecting to the distal end of the second top endplate of the top expandable assembly,
• the expandable implant is expandable first in a medial-lateral direction, second in a lordotic direction, and third in a cranial-caudal direction.

An expandable interbody for use in a surgical procedure, the expandable interbody comprising:

• a distal cage;
• a proximal cage in mechanical communication with the distal cage;
• a top distal ramp slidable along a top surface of the distal cage;
• a bottom distal ramp slidable along a bottom surface of the distal cage, the bottom surface opposite the top surface,
• the top and bottom distal ramps facilitating expansion of the expandable interbody in a lordotic direction and a cranial-caudal direction;
• a top proximal ramp slidable along a top surface of the proximal cage;
• a bottom proximal ramp slidable along a bottom surface of the proximal cage, the bottom surface opposite the top surface,
• the top and bottom proximal ramps facilitating expansion of the expandable interbody in the cranial-caudal direction;
• and
• a plurality of endplates in mechanical connection with the top distal ramp, the bottom distal ramp, the top proximal ramp, and the bottom proximal ramp,
• the plurality of endplates expandable in a medial-lateral direction,
• the expandable interbody being diagonally symmetrical about a longitudinal axis of the expandable interbody.

A method of expanding an expandable interbody, the method comprising:

• first translating a distal cage proximally towards a proximal cage to a first position to cause a plurality of endplates to expand in a medial-lateral direction relative to a longitudinal axis of the expandable interbody;
• second translating the distal cage proximally towards the proximal cage from the first position to a second position different than the first position,
• such that a locking hook of a top distal ramp clears a channel defined in a distal end of a first bottom endplate, and
• such that a locking hook of a bottom distal ramp clears a channel defined in a distal end of a first top endplate;
• the second translating causing:
• the top distal ramp to slide along the distal cage to achieve a desired lordosis;
• a first projection of the proximal cage to clear a channel defined in a proximal end of the first bottom endplate, and
• a second projection of the proximal cage to clear a channel defined in a proximal end of a second bottom endplate;
• third translating the distal cage proximally towards the proximal cage from the second position to a third position, a bore of the distal cage abutting a distal face of the proximal cage, the distal face of the proximal cage preventing further proximal translation of the distal cage;
• and
• the third translating causing a top proximal ramp to slide along the proximal cage in a cranial-caudal direction,
• such that a protrusion of the first bottom endplate slides within a groove defined in a proximal extension of a second top endplate, thereby allowing the first bottom endplate to vertically separate from the second top endplate.