Implant material and process for producing the same
First Claim
1. An implant material comprising an organic-inorganic complex porous article which is a biodegradable and bioabsorbable bioactive porous article in which a bioactive bioceramics powder is uniformly dispersed in a biodegradable and bioabsorbable polymer, wherein it has continuous pores and the bioceramics powder is partly exposed to the pore inner surface or the pore inner surface and the porous article surface.
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Abstract
The object of the invention is to provide an implant material comprising a bioactive and degradable and absorbable organic-inorganic complex porous article and a production method thereof.
The invention is,
an implant material comprising an organic-inorganic complex porous article which is a biodegradable and bioabsorbable bioactive porous article in which a bioactive bioceramics powder is uniformly dispersed in a biodegradable and bioabsorbable polymer, wherein it has continuous pores and the bioceramics powder is partly exposed to the pore inner surface or the pore inner surface and the porous article surface, and
a method for producing an implant material comprising an organic-inorganic complex porous article, characterized in that a nonwoven fabric-like fiber aggregate is formed from a mixed solution prepared by dissolving a biodegradable and bioabsorbable polymer in a volatile solvent and dispersing a bioactive bioceramics powder therein, this is formed into a porous fiber aggregate molding by compression-molding it under heating, the fiber aggregate molding is soaked in the volatile solvent, and then said solvent is removed.
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Citations
28 Claims
- 1. An implant material comprising an organic-inorganic complex porous article which is a biodegradable and bioabsorbable bioactive porous article in which a bioactive bioceramics powder is uniformly dispersed in a biodegradable and bioabsorbable polymer, wherein it has continuous pores and the bioceramics powder is partly exposed to the pore inner surface or the pore inner surface and the porous article surface.
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2. An implant material comprising an organic-inorganic complex porous article which is a biodegradable and bioabsorbable bioactive porous article in which a bioactive bioceramics powder is uniformly dispersed in a biodegradable and bioabsorbable polymer, wherein it has continuous pores and percentage content of the bioceramics powder is from 60 to 90% by weight.
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3. An implant material comprising a bioactive organic-inorganic complex porous article which is obtained by forming a nonwoven fabric-like fiber aggregate from a mixed solution prepared by dissolving a biodegradable and bioabsorbable polymer in a volatile solvent and dispersing a bioactive bioceramics powder therein, forming this into a porous fiber aggregate molding by compression-molding it under heating, soaking the fiber aggregate molding in a volatile solvent, and then removing said solvent.
- 4. An implant material comprising an organic-inorganic complex porous article which is a biodegradable and bioabsorbable bioactive porous article in which a bioactive bioceramics powder is uniformly dispersed in a biodegradable and bioabsorbable polymer, wherein it has continuous pores and the bioceramics powder is partly exposed to the pore inner surface or the pore inner surface and the porous article surface, and other biodegradable and bioabsorbable member united thereto.
- 14. An implant material for artificial cartilage, comprising an integrated body prepared by laminating an organic-inorganic complex porous article which is a biodegradable and bioabsorbable bioactive porous article in which a bioactive bioceramics powder is uniformly dispersed in a biodegradable and bioabsorbable polymer, wherein it has continuous pores and the bioceramics powder is partly exposed to the pore inner surface or the pore inner surface and the porous article surface, on at least one side of a core material comprising a texture structure body prepared by converting organic fibers into a multi-axial three dimensional weave texture or knit texture of three or more axes or a complex texture thereof.
- 26. A method for producing an implant material comprising an organic-inorganic complex porous article, characterized in that a nonwoven fabric-like fiber aggregate is formed from a mixed solution prepared by dissolving a biodegradable and bioabsorbable polymer in a volatile solvent and dispersing a bioactive bioceramics powder therein, this is formed into a porous fiber aggregate molding by compression-molding it under heating, the fiber aggregate molding is soaked in the volatile solvent, and then said solvent is removed.
Specification