Implant material for replacing hard tissue of living body
First Claim
1. An implant material for replacing hard tissue of a living body, comprising 10 to 90% by weight of a fiber glass mainly composed of calcium phosphate and 90 to 10% by weight of an organic high polymer material not inhibiting affinity with the living body, the surface of the fiber glass being coated with a calcium phosphate compound having a Ca/P molar ratio of from 0.8 to 1.7 and resulting from dipping the fiber glass in a solution containing phosphoric ions and having a pH value of from 2 to 7, a portion of said fiber glass being exposed on the surface of said implant material, said implant material having a bending strength of from 500 kg/cm2 to 16500 kg/cm2, a modulus of bending elasticity of from 0.6 to 105 kg/cm2 to 5.5×
- 105 kg/cm2, and a density of from 1.3 to 2.3 g/cm3, said fiber glass containing a total content of CaO and P2 O5 of not less than 15% by weight, and having a molar ratio of Ca/P of from 0.3 to 4.0, the bending strength, the modulus of bending elasticity and the density being adjusted within said range by varying the content of the fiber glass.
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Abstract
An implant material for replacing hard tissue of a living body is provided. The implant material comprises 10 to 90 wt % of a fiber glass and 90 to 10 wt % of an organic high polymer material. The fiber glass is mainly composed of calcium phosphate. The organic high polymer material does not inhibit affinity with the living body. On the surface of the implant material, a portion of the fiber glass is exposed.
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Citations
23 Claims
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1. An implant material for replacing hard tissue of a living body, comprising 10 to 90% by weight of a fiber glass mainly composed of calcium phosphate and 90 to 10% by weight of an organic high polymer material not inhibiting affinity with the living body, the surface of the fiber glass being coated with a calcium phosphate compound having a Ca/P molar ratio of from 0.8 to 1.7 and resulting from dipping the fiber glass in a solution containing phosphoric ions and having a pH value of from 2 to 7, a portion of said fiber glass being exposed on the surface of said implant material, said implant material having a bending strength of from 500 kg/cm2 to 16500 kg/cm2, a modulus of bending elasticity of from 0.6 to 105 kg/cm2 to 5.5×
- 105 kg/cm2, and a density of from 1.3 to 2.3 g/cm3, said fiber glass containing a total content of CaO and P2 O5 of not less than 15% by weight, and having a molar ratio of Ca/P of from 0.3 to 4.0, the bending strength, the modulus of bending elasticity and the density being adjusted within said range by varying the content of the fiber glass.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An implant material for replacing hard tissue of a living body, comprising 10 to 90% by weight of a fiber glass mainly composed of calcium phosphate and 90 to 10% by weight of an organic high polymer material not inhibiting affinity with the living body, the surface of the fiber glass being coated with a calcium phosphate compound having a Ca/P molar ratio of from 1.0 to 2.0 and resulting from dipping the fiber glass in a slurry of a calcium phosphate compound having a Ca/P ratio of from 1.0 to 2.0 and then drying the slurry on the fiber glass, a portion of said fiber glass being exposed on the surface of said implant material, said implant material having a bending strength of from 500 kg/cm2 to 16500 kg/cm2, a modulus of bending elasticity of from 0.6×
- 105 kg/cm2 to 5.5×
105 kg/cm2, and a density of from 1.3 to 2.3 g/cm3, said fiber glass containing a total content of CaO and P2 O5 of not less than 15% by weight, and having a molar ratio of Ca/P of from 0.3 to 4.0, the bending strength, the modulus of bending elasticity and the density being adjusted within said range by varying the content of the fiber glass. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
- 105 kg/cm2 to 5.5×
Specification