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US 8,617,248 B2Granted
Spinal implant having variable ratios of the integration surface area to the axial passage area
AssigneeTitan Spine, LLC
InventorsPeter F. Ullrich, Jr., Chad J. Patterson
Life of this patent
Estimating the term…
Abstract
An interbody spinal implant including a body having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, and a substantially hollow center in communication with a vertical aperture. The body, vertical aperture, and bone contact surfaces of the implant each have a surface area that may be independently varied to enhance load support and facilitate implant integration with vertebral bone.
Claims24
An interbody spinal implant, comprising:
- a body having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, a substantially hollow center, a single vertical aperture extending from the top surface to the bottom surface, defining a perimeter, and having a shape, dimensions, and position on the top surface and the bottom surface that define a transverse rim with a varying thickness on the top surface and on the bottom surface of the body, having a maximum width at its center, between the opposing lateral sides, and tapering inwardly from the center to each of its ends, one end proximate the anterior portion and the other end proximate the posterior portion, and a surface area of about 120 mm2 to about 1200 mm2,
- wherein at least a portion of the transverse rim comprises a vertebral endplate bone contact surface comprising a roughened surface topography, without teeth, surrounding the entire perimeter of the vertical aperture, and having a surface area of about 60 mm2 to about 600 mm2,
- the body having generally rounded and blunt intersections defined along the entire lengths between the top surface and the lateral sides and the bottom surface and the lateral sides;
- and
- the body having at least one sharp edge between the top and bottom surfaces and the anterior portion or the posterior portion.
2 more elements
An interbody spinal implant, comprising:
- a body having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, a substantially hollow center, a single vertical aperture extending from the top surface to the bottom surface, defining a perimeter, and having a surface area of about 120 mm2 to about 1200 mm2;
- a first integration plate having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, and a single vertical aperture extending from the top surface to the bottom surface of the first integration plate and aligning with the single vertical aperture of the body,
- optionally, a second integration plate having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, and a single vertical aperture extending from the top surface to the bottom surface of the second integration plate and aligning with the single vertical aperture of the body,
- wherein the single vertical aperture of the first integration plate has a shape, dimensions, and position that define a first transverse rim with a varying thickness on the top surface of the first integration plate, having a maximum width at its center, between the opposing lateral sides, and tapering inwardly from the center to each of its ends, one end proximate the anterior portion and the other end proximate the posterior portion, and wherein at least a portion of the first transverse rim comprises a vertebral endplate bone contact surface comprising a roughened surface topography, without teeth, surrounding the entire perimeter of the vertical aperture, and having a surface area of about 60 mm2 to about 600 mm2,
- and optionally wherein the single vertical aperture of the second integration plate has a shape, dimensions, and position that define a second transverse rim with a varying thickness on the top surface of the second integration plate, having a maximum width at its center, between the opposing lateral sides, and tapering inwardly from the center to each of its ends, one end proximate the anterior portion and the other end proximate the posterior portion, and wherein at least a portion of the second transverse rim comprises a vertebral endplate bone contact surface comprising a roughened surface topography, without teeth, surrounding the entire perimeter of the vertical aperture, and having a surface area of about 60 mm2 to about 600 mm2,
- the body having generally rounded and blunt intersections defined along the entire lengths between the top surface and the lateral sides and the bottom surface and the lateral sides;
- and
- the first integration plate and optionally the second integration plate having at least one sharp edge between the top surface and the anterior portion or the posterior portion.
5 more elements
Dependencies are inferred from the claim text.