Intervertebral implant for quadrupeds
AssigneeDePuy Synthes Products, Inc.
InventorJean-Noel Bordeaux
Life of this patent
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Abstract
A low profile intervertebral implant for implantation in an intervertebral disc space between adjacent vertebral bodies of a quadruped. The intervertebral implant includes a plate and a spacer that extends from the plate. The intervertebral implant can define geometries that nest with complementary geometries of the vertebral bodies. Further, the plate can include fixation holes that extend along trajectories such that screws inserted through the fixation holes and driven into the respective vertebral bodies can purchase with dense cortical bone.
Claims19
An intervertebral implant configured to be implanted in an intervertebral disc space of a quadruped, the intervertebral disc space defined by a cranial vertebral body and a caudal vertebral body, the implant comprising:
- a plate defining a ventral plate end and a dorsal plate end spaced opposite the ventral plate end in a dorsal direction, and a plurality of fixation apertures that extend through the plate from the ventral plate end to the dorsal plate end;
- and
- a spacer that extends in the dorsal direction from the plate, wherein the spacer defines a caudal surface that is configured to face and abut the caudal vertebral body, and a cranial surface that is opposite the caudal surface in a cranial direction and is configured to face and abut the cranial vertebral body, the caudal and cranial surfaces configured to grip the caudal and cranial vertebral bodies, respectively,
- wherein the cranial surface is convex in a first plane that is oriented along the dorsal direction and the cranial direction, and the cranial surface is convex in a second plane that is oriented along the cranial direction and a lateral direction that is substantially perpendicular to each of the dorsal direction and the cranial direction,
- wherein the caudal surface is substantially straight and linear in the first plane, and the caudal surface is concave in the second plane, and
- wherein the cranial surface defines a first radius of curvature in the first plane, and a second radius of curvature in the second plane that is greater than the first radius of curvature.
An intervertebral implant configured to be implanted in an intervertebral disc space of a quadruped, the intervertebral disc space defined by a cranial vertebral body and a caudal vertebral body, the implant comprising:
- a plate defining a ventral plate end and a dorsal plate end spaced opposite the ventral plate end in a dorsal direction, and a plurality of fixation apertures that extend through the plate from the ventral plate end to the dorsal plate end;
- and
- a spacer that extends in the dorsal direction from the plate, wherein the spacer defines a caudal surface that is configured to face and abut the caudal vertebral body, and a cranial surface that is opposite the caudal surface in a cranial direction and is configured to face and abut the cranial vertebral body, the caudal and cranial surfaces configured to grip the caudal and cranial vertebral bodies, respectively,
- wherein the cranial surface is convex in a first plane that is oriented along the dorsal direction and the cranial direction, and the cranial surface is convex in a second plane that is oriented along the cranial direction and a lateral direction that is substantially perpendicular to each of the dorsal direction and the cranial direction,
- wherein the caudal surface is substantially straight and linear in the first plane, and the caudal surface is concave in the second plane, and
- wherein the implant defines a cranial implant surface that is defined by the cranial surface of the spacer and the cranial portion of the dorsal plate end, and the cranial implant surface has a concavo-convex geometry in the first plane.
An intervertebral implant configured to be implanted in an intervertebral disc space of a quadruped, the intervertebral disc space defined by a cranial vertebral body and a caudal vertebral body, the implant comprising;
- a plate defining a ventral plate end and a dorsal plate end spaced opposite the ventral plate end in a dorsal direction, and a plurality of fixation apertures that extend through the plate from the ventral plate end to the dorsal plate end;
- and
- a spacer that extends in the dorsal direction from the plate, wherein the spacer defines a caudal surface that is configured to face and abut the caudal vertebral body, and a cranial surface that is opposite the caudal surface in a cranial direction and is configured to face and abut the cranial vertebral body, the caudal and cranial surfaces configured to grip the caudal and cranial vertebral bodies, respectively,
- wherein the cranial surface is convex in a first plane that is oriented along the dorsal direction and the cranial direction, and the cranial surface is convex in a second plane that is oriented along the cranial direction and a lateral direction that is substantially perpendicular to each of the dorsal direction and the cranial direction,
- wherein the caudal surface is substantially straight and linear in the first plane, and the caudal surface is concave in the second plane, and
- wherein the implant defines a caudal concavity in the first plane at a caudal interface between the spacer and the plate.
Dependencies are inferred from the claim text.