ARTIFICIAL INTERVERTEBRAL DISK INSERTION JIG AND JIG SET, AND ARTIFICIAL INTERVERTEBRAL DISK

Title:

ARTIFICIAL INTERVERTEBRAL DISK INSERTION JIG AND JIG SET, AND ARTIFICIAL INTERVERTEBRAL DISK

Document Type and Number:

WIPO Patent Application WO/2006/025125

Kind Code:

A1

Abstract:

A self-sustained artificial intervertebral disk that has flexible nearly ideal mechanical transformation characteristics and durability, exhibiting high vertebra bonding fixing force; and an artificial intervertebral disk insertion jig capable of easily and securely inserting and setting this artificial intervertebral disk between adjoining vertebrae. There is provided an artificial intervertebral disk comprising a core material constituted of a texture structure obtained by forming an organic fiber into a triaxial or further multiaxial three-dimensional woven texture, or knitted texture, or composite texture thereof and, superimposed on both upper and lower surfaces of the core material, plates of a polymer capable of being in vivo decomposed and absorbed which contains a bioactive bioceramic powder. Preferably, the superimposed plates are those having a multiplicity of holes made therethrough, the through-holes optionally packed with a material capable of being in vivo decomposed rapidly and absorbed, the material exhibiting bone conduction and/or bone induction properties. Further, there is provided an insertion jig comprising a combination of upper jig and lower jig fitted together so as to be capable of avoiding detachment in the vertical direction and capable of sliding back and forth, and further comprising an upper holding part and lower holding part for holding the artificial intervertebral disk, respectively disposed in front parts of the upper jig and lower jig.

Inventors:

SHIKINAMI YASUO (JP)
TSUTA KAORU (JP)
KAWABE YASUHIRO (JP)

Application Number:

PCT/JP2004/019630

Publication Date:

March 09, 2006

Filing Date:

December 28, 2004

Export Citation:

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Assignee:

TAKIRON CO (JP)
SHIKINAMI YASUO (JP)
TSUTA KAORU (JP)
KAWABE YASUHIRO (JP)

International Classes:

A61B17/56; A61B17/58; A61F2/44; A61L27/00; (IPC1-7): A61B17/56; A61B17/58; A61F2/44; A61L27/00

Foreign References:

JP2002535066A	2002-10-22
US5431658A	1995-07-11
JP2003230583A	2003-08-19
JP2004081257A	2004-03-18

Other References: