Intervertebral Implant

An intervertebral implant configured to be inserted into an intervertebral space between opposing end faces of adjacent first and second vertebrae and having a lead end that leads as the implant is inserted in an insertion direction into the intervertebral space and a trailing end opposite the lead end, the intervertebral implant comprising:

• a first part having an outer surface configured to rest against the end face of the first vertebrae and having an opposing inner surface comprising a concave portion;
• a second part having an outer surface configured to rest against the end face of the second vertebrae and an opposing inner surface;
• a pivot insert configured to be positioned between the first and second parts and having a top surface comprising a convex portion configured to pivotally engage the concave portion of the inner surface of the first part such that the first part can pivot relative to the second part, and an opposing bottom surface;
• and
• wherein the first and second parts each have an anchor midline extending between the lead end and the trailing end on their respective first and second outer surfaces passing essentially through the center of the first and second outer surfaces and parallel to the insertion direction;
• a first part elongated anchor extending longitudinally along the first part anchor midline;
• a second part elongated anchor extending longitudinally along the second part anchor midline;
• wherein the first elongated anchor has a maximum height above the first part outer surface that is greater than the maximum height of the remainder of the first part measured from the outer surface to the opposing inner surface;
• and
• wherein the first anchor midline is the only location on the first outer surface where there is located an elongated anchor having a maximum height above the first part outer surface greater than the maximum height of the remainder of the first part measured from the outer surface to the opposing inner surface.

An intervertebral implant configured to be inserted into an intervertebral space between opposing end faces of adjacent first and second vertebrae and having a lead end that leads as the implant is inserted in an insertion direction into the intervertebral space and a trailing end opposite the lead end, the intervertebral implant comprising:

• a first part having an outer surface configured to rest against the end face of the first vertebrae and having an opposing inner surface comprising a concave portion;
• a second part having an outer surface configured to rest against the end face of the second vertebrae and an opposing inner surface comprising an indentation;
• a pivot insert configured to be positioned between the first and second parts and having a top surface comprising a convex portion configured to pivotally engage the concave portion of the inner surface of the first part such that the first part can pivot relative to the second part, and an opposing bottom surface comprising an outwardly facing surface designed to fill up the indentation on the inner surface of the second part;
• and
• wherein the first and second parts each have an anchor midline extending between the lead end and the trailing end on their respective first and second outer surfaces passing essentially through the center of the first and second outer surfaces and parallel to the insertion direction;
• a first part elongated anchor extending longitudinally along the first part anchor midline;
• a second part elongated anchor extending longitudinally along the second part anchor midline;
• wherein the first elongated anchor has a maximum height above the first part outer surface that is greater than the maximum height of the remainder of the first part measured from the outer surface to the opposing inner surface;
• and
• wherein the first anchor midline is the only location on the first outer surface where there is located an elongated anchor having a maximum height above the first part outer surface greater than the maximum height of the remainder of the first part measured from the outer surface to the opposing inner surface.

An intervertebral implant configured to be inserted into an intervertebral space between opposing end faces of adjacent first and second vertebrae and having a lead end that leads as the implant is inserted in an insertion direction into the intervertebral space and a trailing end opposite the lead end, the intervertebral implant comprising:

• a first part having an outer surface configured to rest against the end face of the first vertebrae and having an opposing inner surface comprising a concave portion;
• a second part having an outer surface configured to rest against the end face of the second vertebrae and an opposing inner surface;
• a pivot insert configured to be positioned between the first and second parts and having a top surface comprising a convex portion configured to pivotally engage the concave portion of the inner surface of the first part such that the first part can pivot relative to the second part, and an opposing bottom surface;
• and
• wherein the first and second parts each have an anchor midline extending between the lead end and the trailing end on their respective first and second outer surfaces passing essentially through the center of the first and second outer surfaces and parallel to the insertion direction;
• a first part elongated anchor extending longitudinally along the first part anchor midline;
• a second part elongated anchor extending longitudinally along the second part anchor midline;
• wherein the first elongated anchor has a maximum height above the first part outer surface that is greater than its width where that width is measured at a point half-way along the height of the anchor;
• and
• wherein the first anchor midline is the only location on the first outer surface where there is located an elongated anchor having a maximum height above the first part outer surface greater than its width where that width is measured at a point half-way along the height of the anchor.