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US 11,399,955 B2Granted
Systems and techniques for restoring and maintaining intervertebral anatomy
AssigneeWarsaw Orthopedic, Inc.
InventorKevin T. Foley
Life of this patent
Estimating the term…
Abstract
Techniques and systems for distracting a spinal disc space and supporting adjacent vertebrae are provided. Trial instruments are insertable into the disc space to determine a desired disc space height and to select a corresponding implant. Implants can be also be self-distracting and the implant providing the desired disc space height can be implanted in the spinal disc space.
Claims20
A spinal implant for insertion between an upper vertebral body and a lower vertebral body, the spinal implant comprising:
- a trailing end surface,
- a leading end portion terminating in a nose portion having a terminal end surface,
- a length between the trailing end surface and the terminal end surface,
- a mid-longitudinal axis extending along the length through the trailing end surface and the terminal end surface of the nose portion,
- an upper surface extending from adjacent the trailing end surface to the leading end portion, the upper surface being orientable toward an end plate of the upper vertebral body when the spinal implant is inserted between the upper and lower vertebral bodies, and
- a lower surface extending from adjacent the trailing end surface to the leading end portion, the lower surface being orientable toward an end plate of the lower vertebral body when the spinal implant is inserted between the upper and lower vertebral bodies,
- wherein a first plane extends through the trailing end surface, the leading end portion, the upper surface, the lower surface, and the mid-longitudinal axis, and along the length, the nose portion being substantially arcuate in the first plane,
- wherein the leading end portion extends from a second plane to the terminal end surface, the second plane being perpendicular to the mid-longitudinal axis and the first plane, extending through the upper surface and the lower surface, and being disposed between the trailing end surface and the terminal end surface,
- wherein the leading end portion includes a first surface extending from the upper surface to the nose portion, and a second surface extending from the lower surface to the nose portion, and
- wherein the terminal end surface extends between a third plane and a fourth plane, the third plane and the fourth plane being parallel to the mid-longitudinal axis and perpendicular to the first plane and the second plane, the distance between the third plane and the fourth plane at the intersection with the second plane being less than a third of a distance between the upper surface and the lower surface in the second plane.
7 more elements
A spinal implant for insertion between an upper vertebral body and a lower vertebral body, the spinal implant comprising:
- a leading end portion terminating in a nose portion having a terminal end surface,
- a mid-longitudinal axis extending through the terminal end surface of the nose portion,
- an upper surface being orientable toward an end plate of the upper vertebral body when the spinal implant is inserted between the upper and lower vertebral bodies, and
- a lower surface being orientable toward an end plate of the lower vertebral body when the spinal implant is inserted between the upper and lower vertebral bodies,
- wherein a first plane extends through the leading end portion, the upper surface, and the lower surface, and along the mid-longitudinal axis, the nose portion being substantially semi-circular in the first plane,
- wherein the leading end portion extends from a second plane to the terminal end surface, the second plane being perpendicular to the mid-longitudinal axis and the first plane, extending through the upper surface and the lower surface,
- wherein the leading end portion includes a first surface extending from the upper surface to the nose portion, and a second surface extending from the lower surface to the nose portion, and
- wherein the terminal end surface extends between a third plane and a fourth plane, the third plane and the fourth plane being parallel to the mid-longitudinal axis and perpendicular to the first plane and the second plane, the distance between the third plane and the fourth plane at the intersection with the second plane being less than a third of a distance between the upper surface and the lower surface in the second plane.
5 more elements
A spinal implant for insertion between an upper vertebral body and a lower vertebral body, the spinal implant comprising:
- a proximal end and an opposite distal end;
- a trailing end portion extending from the proximal end toward the distal end;
- a leading end portion extending from the distal end toward the proximal end, the leading end portion including a nose portion terminating at a terminal end surface provided at and adjacent the distal end,
- a mid-longitudinal axis extending through the terminal end surface of the nose portion, and
- an upper surface and a lower surface each having portions opposite from one another,
- wherein a first plane extends through the leading end portion, the upper surface, and the lower surface, and along the mid-longitudinal axis, the terminal end surface being substantially semi-circular in the first plane,
- wherein the leading end portion extends from a second plane to the terminal end surface, the second plane being perpendicular to the mid-longitudinal axis and the first plane, extending through the upper surface and the lower surface,
- wherein the leading end portion includes a first surface extending from the upper surface to the nose portion, and a second surface extending from the lower surface to the nose portion, and
- wherein the terminal end surface extends between a third plane and a fourth plane, the third plane and the fourth plane being parallel to the mid-longitudinal axis and perpendicular to the first plane and the second plane, the distance between the third plane and the fourth plane at the intersection with the second plane being less than a third of a distance between the upper surface and the lower surface in the second plane.
6 more elements
Dependencies are inferred from the claim text.