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US 8,932,357 B2Granted
Intervertebral implant
AssigneeDePuy Synthes Products, Inc.
InventorsCyril Voisard, Markus Kraft, Beat Lechmann
Life of this patent
Estimating the term…
Abstract
A method for fixation of an intervertebral implant includes the steps of: a) applying a spreading force to a first and second adjacent vertebral bodies; b) removing the intervertebral disc between the adjacent first and second vertebral bodies; c) inserting a shaft of the bone anchors into the vertebral bodies, and fixing a head of the bone anchors to an intervertebral implant.
Claims33
An intervertebral implant assembly comprising:
- an intervertebral implant body defining a first bone contacting surface and a second bone contacting surface spaced apart from the first bone contacting surface along a central axis, at least one of the first and second bone contacting surfaces defining at least one recess that extends into the implant body but not through the implant body, and at least one recess opening for each respective recess, the at least one recess opening extending transversely with respect to the central axis and being aligned with the respective first and second bone contacting surfaces, the at least one recess opening being sized to receive a head of a bone anchor therethrough so that a shaft of the bone anchor extends out from the respective at least one of the first and second bone contacting surfaces when the at least one recess receives the head of the bone anchor,
- wherein the at least one recess opening is configured to receive the head of the bone anchor after the shaft has been inserted into a vertebral body.
An intervertebral implant assembly comprising:
- an intervertebral implant body sized to be received in an intervertebral space defined by a first vertebral body and a second vertebral body, the intervertebral implant body defining a first bone contacting surface configured to face the first vertebral body, and a second bone contacting surface configured to face the second vertebral body, the first bone contacting surface spaced apart from the second bone contacting surface, the implant body defining a first recess that extends into the first bone contacting surface but not through the implant body, the implant body defining a second recess that extends into the second bone contacting surface but not through the implant body, the implant body defining first and second openings into the first and second recesses, respectively;
- a first bone anchor comprising a first head and a first shaft that extends from the first head along a first axis, the first recess sized to receive the first head;
- and
- a second bone anchor comprising a second head and a second shaft that extends from the second head along a second axis, the second recess sized to receive the second head,
- wherein the intervertebral implant body is configured to be inserted between the first and second vertebral bodies such that (i) the first opening aligns with and receives the first head along the first axis after the first shaft has been inserted into the first vertebral body and (ii) the second opening aligns with and receives the second head along the second axis after the second shaft has been inserted into the second vertebral body.
2 more elements
Dependencies are inferred from the claim text.