JP5128472B2 - 医用材料 - Google Patents
医用材料 Download PDFInfo
- Publication number
- JP5128472B2 JP5128472B2 JP2008518967A JP2008518967A JP5128472B2 JP 5128472 B2 JP5128472 B2 JP 5128472B2 JP 2008518967 A JP2008518967 A JP 2008518967A JP 2008518967 A JP2008518967 A JP 2008518967A JP 5128472 B2 JP5128472 B2 JP 5128472B2
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- JP
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- Prior art keywords
- amount
- silicate
- medical material
- yttrium
- calcium
- Prior art date
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- 239000012567 medical material Substances 0.000 title claims description 39
- 239000012071 phase Substances 0.000 claims description 72
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims description 68
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims description 68
- 238000000034 method Methods 0.000 claims description 61
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 54
- 239000000463 material Substances 0.000 claims description 52
- 239000011575 calcium Substances 0.000 claims description 44
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims description 43
- 229910004283 SiO 4 Inorganic materials 0.000 claims description 30
- 229910052727 yttrium Inorganic materials 0.000 claims description 30
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 29
- 239000001506 calcium phosphate Substances 0.000 claims description 29
- 239000000292 calcium oxide Substances 0.000 claims description 25
- 210000000988 bone and bone Anatomy 0.000 claims description 23
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 23
- 150000001875 compounds Chemical class 0.000 claims description 22
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 19
- -1 monetite Chemical compound 0.000 claims description 19
- 229910052710 silicon Inorganic materials 0.000 claims description 19
- 239000010703 silicon Substances 0.000 claims description 19
- 230000015572 biosynthetic process Effects 0.000 claims description 18
- 239000002244 precipitate Substances 0.000 claims description 18
- 238000002441 X-ray diffraction Methods 0.000 claims description 17
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 claims description 16
- 229910000391 tricalcium phosphate Inorganic materials 0.000 claims description 16
- 235000019731 tricalcium phosphate Nutrition 0.000 claims description 16
- 229940078499 tricalcium phosphate Drugs 0.000 claims description 16
- 229910052586 apatite Inorganic materials 0.000 claims description 15
- 235000011010 calcium phosphates Nutrition 0.000 claims description 13
- 229910000389 calcium phosphate Inorganic materials 0.000 claims description 12
- 239000013078 crystal Substances 0.000 claims description 11
- 239000002210 silicon-based material Substances 0.000 claims description 11
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 9
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 9
- 229910052791 calcium Inorganic materials 0.000 claims description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 8
- 239000011574 phosphorus Substances 0.000 claims description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims description 8
- 159000000007 calcium salts Chemical class 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- OBOSXEWFRARQPU-UHFFFAOYSA-N 2-n,2-n-dimethylpyridine-2,5-diamine Chemical compound CN(C)C1=CC=C(N)C=N1 OBOSXEWFRARQPU-UHFFFAOYSA-N 0.000 claims description 2
- NGDQQLAVJWUYSF-UHFFFAOYSA-N 4-methyl-2-phenyl-1,3-thiazole-5-sulfonyl chloride Chemical compound S1C(S(Cl)(=O)=O)=C(C)N=C1C1=CC=CC=C1 NGDQQLAVJWUYSF-UHFFFAOYSA-N 0.000 claims description 2
- 239000004254 Ammonium phosphate Substances 0.000 claims description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 2
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- 239000000908 ammonium hydroxide Substances 0.000 claims description 2
- 229910000148 ammonium phosphate Inorganic materials 0.000 claims description 2
- 235000019289 ammonium phosphates Nutrition 0.000 claims description 2
- 239000008346 aqueous phase Substances 0.000 claims description 2
- 239000000316 bone substitute Substances 0.000 claims description 2
- 239000001110 calcium chloride Substances 0.000 claims description 2
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 2
- 239000000920 calcium hydroxide Substances 0.000 claims description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 2
- JJIQGEZLLWXYKV-UHFFFAOYSA-N calcium;dinitrate;hydrate Chemical compound O.[Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O JJIQGEZLLWXYKV-UHFFFAOYSA-N 0.000 claims description 2
- 239000004568 cement Substances 0.000 claims description 2
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims description 2
- JXJTWJYTKGINRZ-UHFFFAOYSA-J silicon(4+);tetraacetate Chemical compound [Si+4].CC([O-])=O.CC([O-])=O.CC([O-])=O.CC([O-])=O JXJTWJYTKGINRZ-UHFFFAOYSA-J 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 230000002194 synthesizing effect Effects 0.000 claims description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims 2
- 239000012620 biological material Substances 0.000 claims 1
- 229910000019 calcium carbonate Inorganic materials 0.000 claims 1
- JUNWLZAGQLJVLR-UHFFFAOYSA-J calcium diphosphate Chemical compound [Ca+2].[Ca+2].[O-]P([O-])(=O)OP([O-])([O-])=O JUNWLZAGQLJVLR-UHFFFAOYSA-J 0.000 claims 1
- XAAHAAMILDNBPS-UHFFFAOYSA-L calcium hydrogenphosphate dihydrate Chemical compound O.O.[Ca+2].OP([O-])([O-])=O XAAHAAMILDNBPS-UHFFFAOYSA-L 0.000 claims 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims 1
- 229940043256 calcium pyrophosphate Drugs 0.000 claims 1
- 239000000378 calcium silicate Substances 0.000 claims 1
- 229910052918 calcium silicate Inorganic materials 0.000 claims 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims 1
- 235000019821 dicalcium diphosphate Nutrition 0.000 claims 1
- 229910000392 octacalcium phosphate Inorganic materials 0.000 claims 1
- YIGWVOWKHUSYER-UHFFFAOYSA-F tetracalcium;hydrogen phosphate;diphosphate Chemical compound [Ca+2].[Ca+2].[Ca+2].[Ca+2].OP([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O YIGWVOWKHUSYER-UHFFFAOYSA-F 0.000 claims 1
- GBNXLQPMFAUCOI-UHFFFAOYSA-H tetracalcium;oxygen(2-);diphosphate Chemical compound [O-2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GBNXLQPMFAUCOI-UHFFFAOYSA-H 0.000 claims 1
- 239000000243 solution Substances 0.000 description 51
- 239000000203 mixture Substances 0.000 description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 45
- 238000003756 stirring Methods 0.000 description 35
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 31
- 150000001768 cations Chemical class 0.000 description 28
- 238000006467 substitution reaction Methods 0.000 description 28
- 239000000725 suspension Substances 0.000 description 27
- 239000008367 deionised water Substances 0.000 description 24
- 229910021641 deionized water Inorganic materials 0.000 description 24
- 239000000843 powder Substances 0.000 description 19
- 238000010438 heat treatment Methods 0.000 description 18
- 238000001556 precipitation Methods 0.000 description 17
- 238000003786 synthesis reaction Methods 0.000 description 14
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 12
- 230000007246 mechanism Effects 0.000 description 9
- 235000011114 ammonium hydroxide Nutrition 0.000 description 8
- 239000012455 biphasic mixture Substances 0.000 description 8
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 7
- 230000002950 deficient Effects 0.000 description 7
- 230000001965 increasing effect Effects 0.000 description 7
- 230000032683 aging Effects 0.000 description 6
- 238000003556 assay Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 229910052697 platinum Inorganic materials 0.000 description 6
- 230000001376 precipitating effect Effects 0.000 description 5
- 238000005245 sintering Methods 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 239000007943 implant Substances 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 229910052747 lanthanoid Inorganic materials 0.000 description 3
- 150000002602 lanthanoids Chemical class 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 239000011541 reaction mixture Substances 0.000 description 3
- 229910052706 scandium Inorganic materials 0.000 description 3
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 3
- 150000004760 silicates Chemical class 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910014497 Ca10(PO4)6(OH)2 Inorganic materials 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 230000003416 augmentation Effects 0.000 description 1
- 229920000249 biocompatible polymer Polymers 0.000 description 1
- 230000002051 biphasic effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000011067 equilibration Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical group 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000000278 osteoconductive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010532 solid phase synthesis reaction Methods 0.000 description 1
- 150000003746 yttrium Chemical class 0.000 description 1
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- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L24/00—Surgical adhesives or cements; Adhesives for colostomy devices
- A61L24/02—Surgical adhesives or cements; Adhesives for colostomy devices containing inorganic materials
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/02—Inorganic materials
- A61L27/12—Phosphorus-containing materials, e.g. apatite
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- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/28—Materials for coating prostheses
- A61L27/30—Inorganic materials
- A61L27/32—Phosphorus-containing materials, e.g. apatite
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- A—HUMAN NECESSITIES
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- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/40—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material
- A61L27/42—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having an inorganic matrix
- A61L27/425—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having an inorganic matrix of phosphorus containing material, e.g. apatite
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/40—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material
- A61L27/44—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix
- A61L27/46—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix with phosphorus-containing inorganic fillers
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/32—Phosphates of magnesium, calcium, strontium, or barium
- C01B25/322—Preparation by neutralisation of orthophosphoric acid
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/447—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on phosphates, e.g. hydroxyapatite
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- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3225—Yttrium oxide or oxide-forming salts thereof
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- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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Description
Ca10−yMy(PO4)6−x(SiO4)x(OH)2−x+y
(式中、Mは3価カチオンであり、0<x<1.3及び0<y<1.3である。好ましくは、0<x<1.1、より好ましくは0.5<x<1.1である。好ましくは、0<y<1.1、より好ましくは0.5<y<1.1である。また好ましくはx≧yである。)
(1)Y3+ + SiO4 4− → Ca2+ + PO4 3−
これは、以下の一般式にまとめることができる。
Ca10−xYx(PO4)6−x(SiO4)x(OH)2
(2) 0.5Y3++SiO4 4− → 0.5Ca2++PO4 3−+0.5OH−
これは、以下の一般式にまとめることができる。
Ca10―yYy(PO4)6−x(SiO4)x(OH)2−x+y
(このメカニズムでは、y<x)
以下の方法は、以下の置換メカニズムに基づく、水沈殿法による、Y3+/SiO4 4−共置換のヒドロキシアパタイト約10gの合成を記載するものである。
Ca10−yYy(PO4)6−x(SiO4)x(OH)2−x+y
(式中、x=y=1.0である)
以下の方法は、以下の置換メカニズムに基づく、水沈殿法によるY3+/SiO4 4−共置換ヒドロキシアパタイト約10gの合成を記載するものである。
Ca10−yYy(PO4)6−x(SiO4)x(OH)2−x+y
(式中、x=1.0、y=0.5である)
この実施例の合成は、実施例1に記載の合成方法の通りで、唯一異なるのが、H3PO4及びTEOS溶液(それぞれ約100ml)を、約60分間の間、撹拌しているCa(OH)2/YNHの懸濁液に、一緒に混合し、同時に滴下したことであった。この違いは別として、沈殿及び次の加工ステップは、実施例1に記載のステップと同一であった。この方法により生成した焼結試料のX線回折パターンは、実施例1で観察したものと同一であった。
以下の方法は、以下の置換メカニズムに基づく、水沈殿法によるY3+/SiO4 4−共置換ヒドロキシアパタイト/リン酸三カルシウムの2相混合物約10gの合成を記載するものである。
Ca10−yYy(PO4)6−x(SiO4)x(OH)2−x+y
(式中、x=y=0.6である)
以下の方法は、以下の置換メカニズムに基づく、水沈殿法によるY3+/SiO4 4−共置換ヒドロキシアパタイト/リン酸三カルシウム2相混合物約10gの合成を記載するものである。
Ca10−yYy(PO4)6−x(SiO4)x(OH)2−x+y
(式中、x=0.6、y=0.3である)
以下の方法は、以下の置換メカニズムに基づく、水沈殿法によるY3+/SiO4 4−共置換ヒドロキシアパタイト/リン酸三カルシウムの2相混合物約10gの合成を記載するものである。
Ca10−yYy(PO4)6−x(SiO4)x(OH)2−x+y
(式中、x=y=1.3である)
以下の方法は、以下の置換メカニズムに基づく、水沈殿法によるY3+/SiO4 4−共置換ヒドロキシアパタイト/リン酸三カルシウムの2相混合物約10gの合成を記載するものである。
Ca10−yYy(PO4)6−x(SiO4)x(OH)2−x+y
(式中、x=1.0、y=0.5である)
Claims (47)
- ケイ素及びイットリウムを含み、下記一般化学式を有する化合物を含む、合成リン酸カルシウム系医用材料。
Ca 10−y M y (PO 4 ) 6−x (SiO 4 ) x (OH) 2−x+y
[式中、Mはイットリウムであり、0<x<1.3、及び0<y<1.3である。] - リン酸カルシウム系医用材料が、ヒドロキシアパタイト又はアパタイトを含む、請求項1に記載の医用材料。
- 0<x<1.1である、請求項1又は2に記載の医用材料。
- 0.5<x<1.1である、請求項1〜3のいずれか一項に記載の医用材料。
- 0<y<1.1である、請求項1〜4のいずれか一項に記載の医用材料。
- 0.5<y<1.1である、請求項1〜5のいずれか一項に記載の医用材料。
- x≧yである、請求項1〜6のいずれか一項に記載の医用材料。
- y≧xである、請求項1〜6のいずれか一項に記載の医用材料。
- X線回折により測定された医用材料の相純度が、少なくとも95%である、請求項1〜8のいずれか一項に記載の医用材料。
- X線回折により測定された医用材料の相純度が、少なくとも97%である、請求項1〜8のいずれか一項に記載の医用材料。
- X線回折により測定された医用材料の相純度が、少なくとも99%である、請求項1〜8のいずれか一項に記載の医用材料。
- 医用材料が1つ又は複数の二次相を含む、請求項1〜8のいずれか一項に記載の医用材料。
- 二次相が、リン酸三カルシウム、そのα又はβ多形、ケイ酸カルシウム、リン酸四カルシウム、炭酸カルシウム、酸化カルシウム、モネタイト、ブルシャイト、ピロリン酸カルシウム、及びリン酸八カルシウムのうちの1種又は複数を含む、請求項12に記載の医用材料。
- シリケートが、12重量%までの量で前記材料内に存在する、請求項1〜13のいずれか一項に記載の医用材料。
- シリケートが、5.3重量%を超え13重量%までの量で前記材料内に存在する、請求項1〜13のいずれか一項に記載の医用材料。
- シリケートが、5.3重量%を超え12重量%までの量で前記材料内に存在する、請求項1〜13のいずれか一項に記載の医用材料。
- シリケートが、13重量%を超え20重量%までの量で前記材料内に存在する、請求項1〜13のいずれか一項に記載の医用材料。
- 請求項1〜17のいずれか一項に記載の医用材料を含む、人工骨材、骨埋入み材、骨移植片、骨代替物、骨の足場材、充填材、被覆材又はセメント。
- カルシウム又はカルシウム含有化合物、イットリウム化合物、リン含有化合物及びケイ素含有化合物を用意するステップと、
アルカリ性のpHで、水相の化合物を反応させることによって、沈殿物を形成するステップと
を含む、請求項1〜17のいずれか一項に記載の医用材料を合成するための方法。 - カルシウム含有化合物が、カルシウム塩を含む、請求項19に記載の方法。
- カルシウム塩が、水酸化カルシウム、塩化カルシウム、硝酸カルシウム及び/又は硝酸カルシウム水和物のうちの1種又は複数から選択される、請求項20に記載の方法。
- イットリウム化合物が、塩化イットリウム及び/又は硝酸イットリウムの一方又は両方から選択される、請求項19〜21のいずれか一項に記載の方法。
- イットリウムが、13重量%までの量で前記材料に存在する、請求項19〜22のいずれか一項に記載の方法。
- イットリウムが、12重量%までの量で前記材料に存在する、請求項19〜22のいずれか一項に記載の方法。
- イットリウムが、20重量%までの量で前記材料に存在する、請求項19〜22のいずれか一項に記載の方法。
- リン含有化合物が、リン酸塩及び/又はリン酸の一方又は両方から選択される、請求項19〜25のいずれか一項に記載の方法。
- リン含有化合物が、リン酸アンモニウム及び/又はリン酸の一方又は両方から選択される、請求項19〜25のいずれか一項に記載の方法。
- ケイ素含有化合物が、シリケートを含む、請求項19〜27のいずれか一項に記載の方法。
- シリケートが、オルトケイ酸テトラエチル(TEOS)及び/又は酢酸ケイ素の一方又は両方から選択される、請求項28に記載の方法。
- シリケートが、13重量%までの量で前記材料内に存在する、請求項28又は29に記載の方法。
- シリケートが、12重量%までの量で前記材料内に存在する、請求項28又は29に記載の方法。
- シリケートが20重量%までの量で前記材料内に存在する、請求項28又は29に記載の方法。
- シリケートが、5.3重量%を超え13重量%までの量で前記材料内に存在する、請求項28又は29に記載の方法。
- シリケートが、5.3重量%を超え12重量%までの量で前記材料内に存在する、請求項28又は29に記載の方法。
- シリケートが、13重量%を超え20重量%までの量で前記材料内に存在する、請求項28又は29に記載の方法。
- pHが8〜13である、請求項19〜35のいずれか一項に記載の方法。
- pHが10〜12である、請求項36に記載の方法。
- アルカリを添加することによって、溶液のpHを所望のpHに調整する、請求項19〜37のいずれか一項に記載の方法。
- アルカリが、水酸化アンモニウム又は濃縮アンモニアである、請求項38に記載の方法。
- 沈殿物を、その形成後に乾燥、加熱、及び/又は焼結する、請求項19〜39のいずれか一項に記載の方法。
- 沈殿物が800℃〜1500℃の範囲の温度に加熱及び/又は焼結される、請求項40に記載の方法。
- 沈殿物が1000℃〜1350℃の範囲の温度に加熱及び/又は焼結される、請求項40に記載の方法。
- 沈殿物が1200℃〜1300℃の範囲の温度に加熱及び/又は焼結される、請求項40に記載の方法。
- ケイ素含有化合物及びイットリウム化合物が、ケイ素の量及びイットリウムの量に対して等モル量で供給される、請求項19〜43のいずれか一項に記載の方法。
- ケイ素含有化合物が、ケイ素の量及びイットリウムの量に対して、イットリウム化合物より多い量で供給される、請求項19〜43のいずれか一項に記載の方法。
- ケイ素含有化合物が、ケイ素の量及びイットリウムの量に対して、イットリウム化合物より少ない量で供給される、請求項19〜43のいずれか一項に記載の方法。
- イットリウムを置換により結晶格子に入れることを特徴とする、請求項1〜17のいずれか一項に記載の医用材料を安定化する方法。
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