Zero-profile interbody spacer and coupled plate assembly

a technology of coupled plate and spacer, which is applied in the field of spinal implants, can solve problems such as adverse impact on the performance of implants, and achieve the effect of preventing over-insertion

Inactive Publication Date: 2010-06-10
DEPUY SYNTHES PROD INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005]The implant preferably includes a spacer portion, a plate portion coupled to the spacer portion, a plurality of bone fixation elements for engaging the vertebral bodies and a retention mechanism for preventing the bone fixation elements from postoperatively uncoupling from the implant.
[0008]The implant preferably also includes one or more stops, more preferably first and second stops, to prevent over-insertion of the implant during implantation and to assist in securing a position of the implant during insertion of the bone fixation elements. The first stop preferably extends superiorly of the top surface of the plate portion for contacting the superior vertebral body while the second stop extends inferiorly of the bottom surface of the plate portion for contacting the inferior vertebral body. The first and second stops are preferably integrally formed with the plate portion.

Problems solved by technology

Both screw back-out and over-insertion of the implant into a prepared disc space can have an adverse impact on the performance of the implant.

Method used

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  • Zero-profile interbody spacer and coupled plate assembly

Examples

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Embodiment Construction

[0058]Certain terminology is used in the following description for convenience only and is not limiting. The words “right”, “left”, “lower” and “upper” designate directions in the drawings to which reference is made. The words “inwardly” or “distally” and “outwardly” or “proximally” refer to directions toward and away from, respectively, the geometric center of the implant and related parts thereof. The words, “anterior”, “posterior”, “superior,”“inferior” and related words and / or phrases designate preferred positions and orientations in the human body to which reference is made and are not meant to be limiting. The terminology includes the above-listed words, derivatives thereof and words of similar import.

[0059]Similar reference numerals will be utilized throughout the application to describe similar or the same components of each of the preferred embodiments of the implant described herein and the descriptions will focus on the specific features of the individual embodiments that...

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Abstract

An implant for insertion into the disc space between vertebrae. The implant including a spacer portion, a plate portion coupled to the spacer portion, a plurality of bone fixation elements for engaging the vertebrae and a retention mechanism for preventing the bone fixation elements from postoperatively uncoupling from the implant.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to U.S. Provisional Patent Application No. 61 / 112,441, filed Nov. 7, 2008, entitled “Zero-Profile Interbody Spacer and Coupled Plate Assembly” and U.S. Provisional Patent Application No. 61 / 139,920, filed Dec. 22, 2008, entitled “Screw and Plate Locking Mechanisms for Smaller Bone Plates”, the contents of which are hereby incorporated by reference in their entirety.BACKGROUND OF THE INVENTION[0002]Intervertebral implants including interbody spacer portions and mechanically coupled plate portions are known in the art for restoring disc height, allowing fusion to occur between the adjacent vertebral bodies, and for providing stable fixation during healing.[0003]It is desirable to construct a zero-profile implant wherein the bone fixation elements that secure the implant to the vertebral bodies are blocked from backing-out of the bone and / or plate. Additionally, it is desirable to construct a zero-profile imp...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61F2/44
CPCA61B17/1728A61B17/88A61B17/8033A61B17/8042A61B17/8052A61B17/8057A61B17/86A61F2/30965A61F2/4465A61F2/4611A61F2002/30387A61F2002/305A61F2002/30505A61F2002/30507A61F2002/30517A61F2002/30576A61F2002/30604A61F2002/30787A61F2002/30794A61F2002/30841A61F2002/4475A61F2220/0025A61F2310/00017A61F2310/00023A61F2310/00029A61F2310/00131A61F2310/00407A61F2310/00796A61B17/1757A61F2220/0016A61F2230/0034A61F2002/3079A61F2002/30593A61B17/809A61B17/7059A61F2/4455A61F2002/448A61F2002/4615
Inventor MCDONOUGH, WILLIAM P.STRAUSBAUGH, WILLIAM L.BONNER, CHRISTOPHERPEPE, THOMASMEILI, RALPHHUNZIKER, MARKUSJEGER, MICHAELKUEENZI, THOMASKOCH, DAVIDPONZER, RAINERRICHTER, JOERNBERGER, ROGER
Owner DEPUY SYNTHES PROD INC
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