发明名称 |
Artificial pyramid |
摘要 |
Disclosed is an artificial vertebra having a bone-marrow regenerating function, comprising a hydroxyapatite (HAp)/collagen (Col) composite body formed by pressure-dehydrating a coprecipitate of hydroxyapatite and collagen to have a nanocomposite structure in which HAp particles are conjugated along a Col fiber while aligned each of the c-axes of the HAp particles along the Col fiber. The HAp/Col composite body is formed with a perforated aperture for allowing a blood vessel and an osteogenic cell to intrude thereinto. The present invention also provides a biodecomposable/bioabsorbable support for fixing an artificial vertebra, comprising a polylactic acid plate prepared by injection-molding molten polylactic acid and then extrusion-molding the injection-molded polylactic acid in such a manner that it is draw-oriented in a uniaxial direction. The plate has four corner regions each formed with a screw hole for fixing the plate to vertebral bodies.
|
申请公布号 |
US6887272(B2) |
申请公布日期 |
2005.05.03 |
申请号 |
US20030468010 |
申请日期 |
2003.12.22 |
申请人 |
NATIONAL INSTITUTE FOR MATERIALS |
发明人 |
SHINOMIYA KENICHI;ITOH SOICHIRO;TANAKA JUNZO;KIKUCHI MASANORI |
分类号 |
A61L27/00;A61B17/80;A61F2/44;A61L27/46;A61L27/58;(IPC1-7):A61F2/28;A61F13/00 |
主分类号 |
A61L27/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|