Expandable spinal spacer device

An expandable spinal spacer system comprising:

• a spacer device comprising:
• a first body comprising a first bone-interfacing surface;
• a second body comprising a second bone-interfacing surface, the second body coupled to the first body, wherein the first body and the second body are configured to be movable relative to one another from a first compressed configuration to a second expanded configuration;
• and
• a wedge positioned between the first body and the second body, the wedge comprising:
• at least one angled surface formed relative to a longitudinal axis of the wedge, the at least one angled surface positioned against an internal surface of one of the first body and the second body;
• and
• a threaded screw portion aligned with the longitudinal axis of the wedge;
• and
• two or more indentations formed in the spacer device, wherein the two or more indentations comprise a first indentation formed on a first side of the spacer device and a second indentation formed on a second side of the spacer device, the second side being opposite the first side about the longitudinal axis of the wedge;
• and
• a tool system for implantation of the spacer device, the tool system comprising:
• a first tool comprising:
• a first elongate shaft extending from a proximal end to a distal end, the first elongate shaft defining a channel from the proximal end to the distal end;
• first and second prongs positioned at the distal end of the first elongate shaft, the first and second prongs sized and positioned such that the first and second prongs engage the two or more indentations formed in the spacer device when the first tool engages the spacer device, the first and second prongs configured to hold the spacer device during delivery of the spacer device into a space between adjacent bones of a patient's spine;
• a second tool comprising:
• a second elongate shaft sized and configured to extend through the channel defined by the first tool;
• and
• a screwdriver end positioned at a distal end of the second elongate shaft, the screwdriver end configured to engage with the threaded screw portion of the spacer device when the second tool is positioned within the channel defined by the first tool, and while the spacer device is engaged by the first and second prongs, the screwdriver end sized and configured to operate the threaded screw portion of the spacer device;
• wherein the first and second bodies of the spacer device are configured to be expanded from the first compressed configuration to the second expanded configuration by rotation of the screwdriver end of the second tool by rotation of the second elongate shaft of the second tool within the channel defined by the first tool, wherein the first and second bodies are expanded to engage the adjacent bones of the patient's spine.