Expandable cervical interbody and instruments thereof

A system including a medical implant and a surgical tool, the system comprising:

• an expandable implant movable between a contracted position and an expanded position, comprising:
• a body extending from a proximal end to a distal end in a proximal-to-distal direction and extending from a first lateral side to a second lateral side in a widthwise direction, the expandable body being defined by a superior endplate and an inferior endplate that are pivotally connected;
• the superior endplate includes an inside surface that comprises an inclined ramp;
• the inferior endplate comprises a support frame, an inside superior-facing surface including a channel, and a frame portion having a proximal surface and a distal surface, wherein an aperture extends through the proximal surface and the distal surface of the frame portion;
• wherein a distal end of the inferior endplate comprises a hinge member that is disposed within an arcuate channel of the superior endplate, the hinge member forming a single pivoting axis between the superior endplate and the inferior endplate;
• a groove disposed on an interior sidewall of the superior endplate;
• a wedge disposed between the superior endplate and the inferior endplate, the wedge including:
• a bearing surface on an upper end thereof configured to slide across the inclined ramp and a tang positioned opposite the bearing surface on a lower end thereof configured for disposal within the channel;
• a pin extending from the wedge and being configured to slide within the groove upon linear movement of the wedge, wherein the pin and the wedge are configured to prevent an overexpansion of the implant about the pivoting axis and to maintain an angular position of the superior endplate relative to the inferior endplate;
• and
• an expansion screw extending through the aperture and being operatively coupled to the wedge;
• wherein the expansion screw is configured to rotate and thereby linearly translate the wedge in a longitudinal direction;
• and
• a surgical tool for moving the expandable implant from the contracted position to the expanded position;
• wherein rotation of a driver of the surgical tool causes the wedge to move proximally and causes the superior endplate to rotate away from the inferior endplate.