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US 10,292,825 B2Granted
Intervertebral spacer with chamfered edges
AssigneeGlobus Medical, Inc.
InventorsDamien Kahmer, Mark Weiman
Life of this patent
Estimating the term…
Abstract
Intervertebral implants, assemblies, and methods thereof. An intervertebral implant includes opposing chamfered edges to reduce a diagonal distance between the edges. The reduced diagonal distance minimizes distraction of an intervertebral disc space during insertion of the implant. A tool for insertion and rotation of the implant is also provided.
Claims20
A system comprising:
- an implant having an elongate body having:
- a central longitudinal axis extending through the body;
- an anterior portion and a posterior portion, the posterior portion having a posterior wall and an internally threaded opening;
- a superior surface extending between the anterior portion and the posterior portion;
- an inferior surface extending between the anterior portion and the posterior portion;
- a first sidewall extending between the superior surface and the inferior surface on a first side of the longitudinal axis;
- and
- a second sidewall extending between the superior surface and the inferior surface on a second side of the longitudinal axis, the first sidewall and the second sidewall comprising a first indentation and a second indentation, respectively, proximate the posterior portion,
- wherein an intersection of the first sidewall and the superior surface comprises a first chamfered edge and wherein an intersection of the second sidewall and the inferior surface comprises a second chamfered edge,
- wherein the posterior wall is generally perpendicular to the first sidewall and the second sidewall;
- and
- an insertion tool having:
- a gripper extending distally from the handle, the gripper having a first fork and a second fork extending generally parallel to the first fork,
- wherein a gap is provided between the first fork and the second fork, the gap being sized to allow the first fork to be inserted into the first indentation and the second fork into the second indention,
- wherein the insertion tool is removably attachable to the implant and adapted to insert the implant between adjacent vertebrae in a first orientation with the first and second sidewalls configured to contact the adjacent vertebrae and rotating the implant 90° to a second orientation with the superior and inferior surfaces configured to contact the adjacent vertebrae.
12 more elements
A system comprising:
- an implant having an elongate body having:
- a central longitudinal axis extending through the body;
- an anterior portion and a posterior portion, the posterior portion having a posterior sidewall and an internally threaded opening;
- a superior surface extending between the anterior portion and the posterior portion;
- an inferior surface extending between the anterior portion and the posterior portion;
- a first sidewall extending between the superior surface and the inferior surface on a first side of the longitudinal axis;
- and
- a second sidewall extending between the superior surface and the inferior surface on a second side of the longitudinal axis, the first sidewall and the second sidewall comprising a first indentation and a second indentation, respectively, proximate the posterior portion,
- wherein the first indentation includes a superior sidewall surface, an inferior sidewall surface, and a side surface extending between and connecting the respective superior sidewall surface and the inferior sidewall surface, the superior sidewall surface and the side surface being connected with a first curved portion and the side surface and the inferior sidewall surface being connected with a second curved portion,
- wherein the first indentation terminates at a curved wall such that the wall connects the superior sidewall surface and the inferior side wall surface with a semi-circular configuration, wherein an intersection of the first sidewall and the superior surface comprises a first chamfered edge and wherein an intersection of the second sidewall and the inferior surface comprises a second chamfered edge,
- wherein the posterior sidewall is generally perpendicular to the first sidewall and the second sidewall;
- and
- an insertion tool having:
- a gripper extending distally from the handle, the gripper having a first fork having a curved portion configured to mate with the curved wall of the first indentation,
- wherein the insertion tool is removably attachable to the implant and adapted to insert the implant between adjacent vertebrae in a first orientation with the first and second sidewalls configured to contact the adjacent vertebrae and rotating the implant 90° to a second orientation with the superior and inferior surfaces configured to contact the adjacent vertebrae.
12 more elements
Dependencies are inferred from the claim text.