Interbody spacer with non-screw anchor
OwnerJoey Reglosinventor
Life of this patent
Estimating the term…
Abstract
An interbody spacer for the spine comprises an anchor assembly removably connectable to a cage. The anchor assembly includes at least two non-screw bone anchors. With insertion of the anchor assembly into the cage, at least one anchor slides against a ramp from an undeployed configuration to rotate up with respect to the plate and out of an upper exit opening of the cage for anchoring into an upper vertebral body and a second anchor slides against a ramp to rotate down with respect to the plate and out of a lower exit opening of the cage for anchoring into a lower vertebral body. The anchor assembly locks with respect to the cage by way of deflectable locking tabs.
Claims20
An interbody spacer comprising:
- a cage including:
- a top surface and a bottom surface interconnected by a left sidewall, a right sidewall and an endwall defining an interior having rear opening;
- a left locking slot formed in the left sidewall and a right locking slot formed in the right sidewall;
- at least one ramped surface in the interior interconnected with a corresponding exit opening in the top surface;
- at least one ramped surface in the interior interconnected with a corresponding exit opening in the bottom surface;
- and
- a threaded bore in the interior facing the rear opening;
- an anchor assembly including:
- a plate configured for insertion into the rear opening and into the interior;
- the plate including an instrument opening aligned with the threaded bore;
- the plate including a left locking tab configured to flex with respect to the plate and enter into locking engagement with the left locking slot;
- the plate including a right locking tab configured to flex with respect to the plate and enter into locking engagement with the right locking slot;
- and
- at least two non-screw bone anchors rotatably connected to the plate;
- wherein the cage and anchor assembly are configured such that insertion of the anchor assembly into the cage causes the bone anchors to rotate out of the top and bottom exit openings and the left and right locking tabs to lock into the left and right locking slots.
An interbody spacer comprising:
- a cage defining an interior and a rear opening;
- an anchor assembly sized and configured for insertion into the rear opening and into the interior;
- the anchor assembly includes at least two non-screw bone anchors rotatably attached to an endplate.
An interbody spacer system comprising:
- an interbody spacer including a cage and an anchor assembly;
- the anchor assembly including at least two non-screw bone anchors rotatably connected to a plate;
- the plate having an instrument opening having a cross-sectional shape;
- and
- an insertion instrument including a main body having a cross-sectional shape corresponding to the shape of the instrument opening and sized and configured for insertion into the instrument opening.
Dependencies are inferred from the claim text.