Lordotic expandable interbody implant and method of using same

An expandable implant, comprising:

• a housing having a proximal endwall, a distal endwall, an anterolateral sidewall, and a posterolateral sidewall defining a hollow interior;
• an upper endplate moveably attached to the housing and having a first interior surface including a first ramp, and a lower endplate moveably coupled to the housing and having a second interior surface including a second ramp;
• a wedge positioned at least partially within the hollow interior of the housing;
• and
• a drive mechanism configured to drive the wedge distally such that a first surface of the wedge engages the first ramp and a second surface of the wedge engages the second ramp, thereby moving the expandable implant from a collapsed configuration to an expanded configuration,
• wherein in the expanded configuration, a height between the upper and lower endplates increases from the proximal endwall toward the distal endwall and increases from the posterolateral sidewall toward the anterolateral sidewall, and
• wherein the upper and lower endplates each include:
• an interior side wall having a recess, and a projection configured to engage the wedge and lock the upper and lower endplates in the collapsed configuration.

A method for adjusting an expandable implant in a subject, the method comprising:

• positioning the expandable implant in the subject, the expandable implant comprising:
• first and second endplates,
• a housing including a proximal wall and a distal wall opposite the proximal wall,
• an expansion mechanism, and
• a drive mechanism configured to engage the proximal wall of the housing,
• wherein the distal wall of the housing is free of the drive mechanism;
• engaging the drive mechanism with the expansion mechanism and driving the expansion mechanism relative to the housing,
• wherein the first and second endplates each include:
• an interior side wall having a recess, and a projection configured to engage the wedge and lock the first and second endplates in the collapsed configuration;
• and
• moving the expandable implant from a collapsed configuration to an expanded configuration and increasing a height between the first and second endplates in the expanded configuration, wherein the height increases along a direction from the proximal wall toward the distal wall of the housing.