Interbody implant with concave profiled nose
AssigneeAdvance Research System, LLC
InventorHamid R. ABBASI
Life of this patent
Estimating the term…
Abstract
An interbody implant and inserter tool for spinal fusion. The interbody implant includes a cage portion and a nose portion. In some embodiments, an outer surface of the nose portion defines at least a first concave profile in a first direction, and may define a second concave profile in a second direction, the second direction being perpendicular to the first direction. The outer surface may also define an oblong cross-section normal to a nose axis. The oblong cross-section may be axisymmetric or continuously curved (or both) about the nose axis. The concave profile(s) enable easier initial insertion of for more precisely locating the interbody implant, so that the greater insertion forces required during implantation do not occur until the interbody implant is securely and accurately placed.
Claims23
An interbody implant, comprising:
- a cage portion defining a cage axis that passes through a proximal portion and a distal portion thereof;
- and
- a nose portion extending in a distal direction from the distal portion of the cage portion, the nose portion defining a nose axis that is concentric with the cage axis, the nose axis extending in the distal direction from the cage portion through a distal extremity of the nose portion, the nose portion defining an outer surface about the nose axis that tapers toward the nose axis in the distal direction, the outer surface defining a first concave profile in a first direction from the nose axis, the first direction being perpendicular to the nose axis.
An interbody implant, comprising:
- a cage portion defining a cage axis that passes through a proximal portion and a distal portion thereof;
- and
- a nose portion extending in a distal direction from the distal portion of the cage portion, the nose portion defining a nose axis that is concentric with the cage axis, the nose axis extending in the distal direction from the cage portion through a distal extremity of the nose portion, the nose portion defining an outer surface about the nose axis that tapers toward the nose axis in the distal direction, the nose portion defining a through-passage concentric about the nose axis,
- wherein:
- the cage portion and the nose portion define a through-passage concentric about the nose axis and the cage axis, the through-passage defining a minimum diameter;
- and
- at least one of the cage portion and the nose portion defines a first slot that extends from the through-passage through an exterior surface of the interbody implant, the first slot being in fluid communication with the through-passage, the first slot being coplanar with at least one of the nose axis and the cage axis and defining a gap dimension that is less than the minimum diameter of the through-passage.
-14. (canceled)
-30. (canceled)
An interbody implant for treatment of a spine, comprising:
- an interbody implant including a nose portion defining a nose axis and having a distal extremity and a mid portion, the distal extremity defining a first cross-section that is orthogonal to the nose axis, the nose portion including an outer surface that is axisymmetric about the nose axis, the outer surface defining a first slope at the distal extremity that is coplanar with the nose axis, the first slope defining a first acute angle relative to the nose axis, the mid portion defining a second cross-section that is orthogonal to a nose axis of the nose portion, the outer surface defining a second slope at the mid portion that is coplanar with the first slope, the second slope defining a second acute angle relative to the nose axis,
- wherein the first cross-section is smaller than the second cross-section, and the first acute angle is smaller than the second acute angle,
- wherein each of the first cross-section and the second cross-section defines a shape that is one of a circular shape and an oblong shape.
-37. (canceled)
Dependencies are inferred from the claim text.