Artificial pyramid
First Claim
1. An artificial vertebra system having a bone-marrow regenerating function and being transformable to an autologous bone, comprising a hydroxyapatite (HAp)/collagen (Col) composite body formed by pressure-dehydrating a coprecipitate of hydroxyapatite and collagen to have the weight ratio of HAp to Col ranging from 70:
- 30 to 80;
20 which is equivalent to that of a bone, and a nanocomposite structure in which HAp particles are conjugated along a Col fiber while aligned each of the c-axes of said HAp particles along said Col fiber, said HAp/Col composite body being formed with a perforated aperture for allowing a blood vessel and an osteogenic cell to intrude thereinto, said aperture being perforated in the frontward/rearward direction and rightward/leftward direction relative to the front side of a human body in a configuration analogous to that of a Volkmann'"'"'s canal, wherein a plural number of said apertures are arranged at even intervals.
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Accused Products
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.
91 Citations
8 Claims
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1. An artificial vertebra system having a bone-marrow regenerating function and being transformable to an autologous bone, comprising a hydroxyapatite (HAp)/collagen (Col) composite body formed by pressure-dehydrating a coprecipitate of hydroxyapatite and collagen to have the weight ratio of HAp to Col ranging from 70:
- 30 to 80;
20 which is equivalent to that of a bone, and a nanocomposite structure in which HAp particles are conjugated along a Col fiber while aligned each of the c-axes of said HAp particles along said Col fiber, said HAp/Col composite body being formed with a perforated aperture for allowing a blood vessel and an osteogenic cell to intrude thereinto, said aperture being perforated in the frontward/rearward direction and rightward/leftward direction relative to the front side of a human body in a configuration analogous to that of a Volkmann'"'"'s canal, wherein a plural number of said apertures are arranged at even intervals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- 30 to 80;
Specification