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Vertebral surface preparation instrument

A vertebra, inner surface technology, applied in the direction of endoscopic cutting instruments, fixators, internal fixators, etc., can solve the problems of reducing height, reducing flexibility, fluid loss, etc.

Inactive Publication Date: 2012-04-11
RANIER LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another common degenerative process is the loss of fluid from the disc
This loss of fluid can limit the disc's ability to absorb pressure and may reduce its height, which can lead to further instability in the spine, reducing mobility and causing pain

Method used

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  • Vertebral surface preparation instrument
  • Vertebral surface preparation instrument
  • Vertebral surface preparation instrument

Examples

Experimental program
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Effect test

Embodiment Construction

[0019] A vertebral surface, such as an endplate, may be prepared for receiving a disc implant, and such preparation may include formation of an endplate surface that may conform to the adjacent contour and / or surface of the replacement disc. The intervertebral disc implant may include certain protrusions and / or other features to resist shear attraction or rotation of the prosthetic device, to facilitate bone fusion of the implant, and / or for other purposes, and the end plates may is prepared to accommodate such protrusions and / or other features. Instruments suitable for the preparation of such vertebral surfaces are described below. Although the instrument is discussed in connection with preparing endplates or other vertebral surfaces, it is not limited thereto and other applications are contemplated.

[0020] turn to Figure 1a to Figure 1e as well as Figure 2a to Figure 2e , an instrument 10 for preparing a vertebral surface, such as an endplate, includes a working end 1...

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PUM

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Abstract

Provided is an instrument for preparing a surface of a vertebra, such as a vertebral endplate, for receipt of a spinal disc implant. The instrument includes a working tool with implements on one or more surfaces of the working tool that act on the vertebral surface. The instrument includes a rotary-to-linear translation system to cause the working tool to move; for example, from side-to-side, top-to-bottom, or along a path that includes side-to-side and top-to-bottom aspects. The rotary-to-linear translation system may include a drive shaft having a cam pin at a distal end, and a cam follower slot at an anterior end of the working tool.

Description

technical field [0001] The present invention relates to an instrument for preparing a vertebral surface, such as a vertebral endplate. Background technique [0002] The intervertebral discs sit between the surfaces of adjacent vertebrae and are called endplates. This disc stabilizes the spine and assists in distributing forces between the vertebral bodies. Discs may become displaced or damaged due to trauma, disease, or other degenerative processes. For example, a portion of the disc may become weakened or torn, which may cause herniation into the area of ​​the spine with the spinal nerves (eg, the vertebral foramen). The protrusion may press on the spinal nerve causing pain, tingling, tingling, decreased strength or loss of movement. Another common degenerative process is the loss of fluid from the disc. This loss of fluid can limit the disc's ability to absorb pressure and may reduce its height, which can lead to further instability of the spine, reducing mobility and ...

Claims

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Application Information

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IPC IPC(8): A61B17/16A61B19/00
CPCA61B2019/304A61B17/1671A61B2017/320028A61B17/1659A61B2090/034A61B17/16A61B17/56A61B17/70
Inventor 乔纳森·劳森斯科特·约翰逊罗伯特·A·斯内尔
Owner RANIER LIMITED
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