Artificial pyramid

Details Artificial pyramid Artificial pyramid

2005-05-03

2005-05-03

Isabella, David J. (Department: 3738)

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

C623S016110, C623S023510, C623S023560, C623S023610

Reexamination Certificate

active

06887272

ABSTRACT:
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.

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