Spinal facet cage implant

An implant for a spinal facet joint, the implant comprising:

• a distal leading portion having a distal surface generally opposite a proximal surface of a proximal trailing end;
• a first side having a first side surface generally opposite a second side having a second side surface;
• a first face having a first surface and a second surface with a second face, the first and second faces extending between the distal leading portion and the proximal trailing end, each of the first and second surfaces having a plurality of teeth, wherein one or more teeth of the plurality of teeth comprises an inner side surface generally opposite an outer side surface, the outer side surface is adjacent to a respective side surface of the first or second side and at least a portion of the inner side surface is generally perpendicular to the first surface of the first face or the second surface of the second face;
• one or more windows defined in the first surface generally opposing one or more windows defined in the second surface;
• and
• one or more side windows defined in the first side surface generally opposing one or more side windows defined in the second side surface, the windows and side windows providing at least partial access to an interior of the implant.

A spinal facet cage implant for implantation in a spinal facet joint, the implant comprising:

• a distal leading portion having a distal end surface generally opposite a proximal end surface of a proximal trailing end;
• a first side having a first side surface generally opposite a second side having a second side surface;
• a first face having a first surface that is generally opposite a second surface of a second face, the first and second faces extending between at least a portion of the distal leading portion and the proximal trailing end, the first and second surfaces having a plurality of teeth, wherein one or more teeth of the plurality of teeth comprises an inner side surface generally opposite an outer side surface, the outer side surface is adjacent to a respective side surface of the first or second side and at least a portion of the inner side surface is generally perpendicular to the first surface of the first face or the second surface of the second face;
• a set of distal windows positioned near the distal leading portion and including a distal window defined in the first surface of the first face and a distal side window defined in the side surface of the first side, the set of distal windows providing access to a distal chamber in an interior of the implant;
• and
• a set of proximal windows positioned near the proximal trailing end and including a proximal window defined in the first surface of the first face and a proximal side window defined in the side surface of the first side, the set of proximal windows providing access to a proximal chamber in an interior of the implant.

An implant for a spinal facet joint, the implant comprising:

• a distal leading portion having a distal surface generally opposite a proximal surface of a proximal trailing end;
• a first side having a first side surface generally opposite a second side having a second side surface, the first side and the second side adapted to interact with opposed prongs of a delivery tool;
• and
• a first face having a first surface and a second surface with a second face, the first and second faces extending between the distal leading portion and the proximal trailing end, each of the first and second surfaces having a plurality of teeth, wherein one or more teeth of the plurality of teeth comprises an inner side surface generally opposite an outer side surface, the outer side surface is adjacent to a respective side surface of the first or second side and at least a portion of the inner side surface is generally perpendicular to the first surface of the first face or the second surface of the second face.