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Articulating disc implant

a technology of disc implants and articulating discs, applied in the field of joint prosthesis and intervertebral implants, can solve the problems of loss of lower back mobility, damage or dislocation of spinal discs, and current prosthetic disc implants that do not replicate the range of motion undertaken by healthy spinal vertebra

Inactive Publication Date: 2011-04-14
DEPUY SYNTHES PROD INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0004]The present invention is directed to an implant, more particularly a joint prosthesis, more preferably an intervertebral implant or joint prosthesis to replace a spinal disk. The intervertebral implant or artificial disc replacement device may have particular application in the cervical

Problems solved by technology

Due to general wear and tear, spinal discs can become damaged or dislocated giving rise to a problem commonly referred to as a “slipped disc”.
However, this method resulted in a loss of mobility in the patient's lower back.
However, current prosthetic disc implants do not replicate the ranges of motion undertaken by healthy spinal vertebrae.

Method used

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Examples

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Embodiment Construction

[0040]Certain terminology is used in the following description for convenience only and is not limiting. The words “right”, “left”, “lower”, “upper”, “bottom”, and “top” designate directions in the drawings to which reference is made. The words “inwardly” and “outwardly” refer to directions toward and away from, respectively, the geometric center of the bone fixation element, instruments and designated parts thereof. The words, “anterior”, “posterior”, “superior”, “inferior”, “medial”, “lateral” 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.

[0041]FIG. 1 illustrates two adjacent cervical vertebrae, vertebra 101 and vertebra 201, which are located in the spine. Vertebrae 101 and 102 typically have a spinal disc (not shown) positioned between them that form a spinal segment that ...

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Abstract

An intervertebral disc implant for use in the spine including a first part (10) and a second part (20), wherein the first part and second part are configured as a joint prosthesis for the spine. The first part includes one of a concave or convex articulating surface (16) and the second part includes one of the other concave or convex articulating surface (26). One of the concave or convex articulating surfaces is preferably elliptically shaped in at least one direction and does not match and is different than one of the other concave or convex articulating surfaces.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of U.S. Provisional Application No. 61 / 059,024, filed on Jun. 5, 2008, entitled “TOTAL DISC REPLACEMENT IMPLANT WITH ANATOMICAL SPINAL ARTICULATION,” the contents of which is incorporated in its entirety by reference herein.FIELD OF THE INVENTION[0002]This invention relates to an implant, more specifically a joint prosthesis, more specifically an intervertebral implant, and even more specifically a joint prosthesis to replace a spinal disc.BACKGROUND OF THE INVENTION[0003]Due to general wear and tear, spinal discs can become damaged or dislocated giving rise to a problem commonly referred to as a “slipped disc”. Intervertebral spinal discs lie between adjacent vertebrae in the spine. Each disc forms a cartilaginous joint allowing slight movement of the vertebrae and acting as a ligament to hold the vertebrae together. In the past, damaged discs were treated by removing the disc and packing the space wit...

Claims

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Application Information

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IPC IPC(8): A61F2/44
CPCA61F2/28A61F2/4611A61F2002/30245A61F2002/30253A61F2002/3065A61F2002/30654A61F2002/30884A61F2002/30934A61F2230/0071A61F2230/0076A61F2310/00029A61F2310/00179A61F2310/00359A61F2/442A61F2/4425
Inventor REICHEN, MARCSCHMURA, KURT
Owner DEPUY SYNTHES PROD INC