Title:
SELF-ESTABLISHING IMPLANT MATERIAL WITH RELIABLE AFFIXABILITY
Document Type and Number:
WIPO Patent Application WO/2010/116511
Kind Code:
A1
Abstract:
The issue is to provide a self-establishing implant material with reliable affixability that can be reliably affixed by inserting between vertebral bodies without widely separating the vertebral bodies. The self-establishing implant material comprises a tissue structure wherein organic fibers have been made into a multiaxial three-dimensional woven tissue of 3 or more axes, or a knitted tissue or a composite tissue thereof, and a spring material of a polymer that is broken down and absorbed into the body, the length of which shortens when pressed in the longitudinal direction and that returns to the original length when pressure is released, and that is embedded in the tissue structure so that the ends protrude from the tissue structure. The spring material is shortened and the thickness of the tissue structure is reduced by compressing with the clamping pieces of an insertion tool. After inserting between vertebral bodies that have been spread apart slightly, the insertion tool is pulled out to allow the tissue structure and the spring material to return to the original state. The ends of the spring material are reliably self-established and affixed by being fit into recesses formed beforehand in the vertebral bodies.
Inventors:
SHIKINAMI YASUO (JP)
Application Number:
PCT/JP2009/057287
Publication Date:
October 14, 2010
Filing Date:
April 09, 2009
Export Citation:
Assignee:
TAKIRON CO (JP)
SHIKINAMI YASUO (JP)
SHIKINAMI YASUO (JP)
International Classes:
A61F2/30; A61F2/38; A61F2/44
Foreign References:
| JP2006230722A | 2006-09-07 | |||
| US20070203580A1 | 2007-08-30 | |||
| US5810851A | 1998-09-22 | |||
| JP2008264562A | 2008-11-06 | |||
| JP2004081257A | 2004-03-18 |
Attorney, Agent or Firm:
KAWASAKI, MASAKI (JP)
Maki Kawasaki (JP)
Maki Kawasaki (JP)
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