WO2005004940A1 - 人工骨に好適な酸化チタン−有機高分子複合体 - Google Patents
人工骨に好適な酸化チタン−有機高分子複合体 Download PDFInfo
- Publication number
- WO2005004940A1 WO2005004940A1 PCT/JP2004/004406 JP2004004406W WO2005004940A1 WO 2005004940 A1 WO2005004940 A1 WO 2005004940A1 JP 2004004406 W JP2004004406 W JP 2004004406W WO 2005004940 A1 WO2005004940 A1 WO 2005004940A1
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- WO
- WIPO (PCT)
- Prior art keywords
- solution
- apatite
- titanium oxide
- organic polymer
- artificial bone
- Prior art date
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Classifications
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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
- A61L27/446—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix with other specific inorganic fillers other than those covered by A61L27/443 or A61L27/46
Definitions
- Titanium oxide-organic polymer composite suitable for artificial bone Titanium oxide-organic polymer composite suitable for artificial bone
- the support is prepared by using a polyolefin, a polyester or a polyamide as a support, and directly treating the surface of the support with a titer solution and subsequently adding warm water or an acid to the room temperature to 9 to 9. Procedure for immersion in a solution at 5 ° C
- the titanium oxide film having the ability to form an apatite having the same CaNOP atomic ratio as that of mammalian bone apatite in an aqueous solution that is supersaturated with the apatite or in the body fluid of the mammal.
- the present invention relates to a titanium oxide-organic polymer composite material for artificial bone formed on a body surface.
- EVOH ethylene-vinyl alcohol copolymer
- a sample obtained by treating the substrate surface with IPTS and further treating with a calcium silicate solution forms an apatite on the surface even within 2 days in SBF, but the calcium silicate gel layer formed is Since it rapidly dissolves in SBF, it is difficult to control the formation of apatite on the surface of the sample, whereas the solubility of titania gel in SBF is much smaller than that of the calcium silicate gel layer. It has been reported that a titania gel layer having a Ti-OH group is excellent as a bioactive layer.
- Japanese Patent Application Laid-Open No. 2000-325843 (Reference 2), especially, in the patent claims [0102] and [0013], there is an organic polymer.
- the titania gel is treated with warm water or an aqueous acid solution to remove the same Ca / P atoms as the apatite of mammalian bone fluid from mammalian body fluids.
- the invention of a titanium oxide-organic polymer composite material for human bone obtained by modifying a titanium oxide film having an activity to form a specific apatite has been reported.
- Active titanium oxide film requires intermediate layer formation
- it is essential to use a polymer containing a hydroxyl group and Z or a derivative thereof, a thiol group, an aldehyde group, or an amino group as a polymer constituting the base material that can be formed.
- a polymer having the active group is used as a polymer constituting the base material, or a treatment for forming an intermediate layer that enables formation of a bioactive layer is performed. It required a and.
- An object of the present invention is to provide a titanium oxide for artificial bone obtained using a polymer having no active group as a material constituting a base material of an artificial bone, and obtained without forming the intermediate layer.
- One object is to provide an organic polymer composite.
- polyolefins particularly polyethylene, particularly low-density polyethylene, polyester, and particularly polyolefin, which are widely used as a base polymer or an advantageous material for human bones.
- polyolefins particularly polyethylene, particularly low-density polyethylene, polyester, and particularly polyolefin, which are widely used as a base polymer or an advantageous material for human bones.
- the base material was obtained by adding a solution comprising an acidic alcohol and water to an alcohol solution of titanium tetraalkoxide described in Patent Document 1 reported by the present inventors.
- a temperature of 0 ° C to 50 ° C is subjected to a titania solution treatment of dipping for several seconds to 1 week in a solution to form a titania gel on the surface of the substrate, and the substrate formed with the titania gel is heated to 50 ° C to 95 ° C.
- the first aspect of the present invention is to provide (1) a method for preparing a base material composed of a polymer compound selected from the group consisting of polyolefin, polyester and nylon, by adding an acidic alcohol and water to an alcohol solution of titanate alkoxide;
- the titania solution is immersed in the solution at a temperature of 0 ° C. to 50 ° C. for several seconds to one week to form a titania gel on the surface of the base material.
- the titanium oxide monoorganic polymer for artificial bone according to (1) wherein the titanium tetraalkoxide is tetrisopropyl titanate, the alcohol is ethanol, and the acid is an inorganic acid.
- the titania-treated solution maintains the titanium alkoxy and alcohol solution at a temperature of 0 ° C to 10 ° C, and particularly at the above temperature by ice-cold water.
- the second aspect of the present invention is that (5) a base material made of a polymer compound selected from the group consisting of polyolefin, polyester and nylon is prepared by adding an acidic alcohol to an alcohol solution of titanate alkoxide; The titania gel is formed on the surface of the base material by subjecting the base material surface to a titania solution treatment by immersing in a solution obtained by adding a solution of water at a temperature of 0 ° C. to 50 ° C. for several seconds to one week.
- the titanium oxide-organic polymer composite material for artificial bone was obtained by modifying the titanium oxide film to form an apatite with the same Ca / P atomic ratio as the animal bone apatite, and the composite material was used as the apatite. Dipping in a supersaturated aqueous solution It is a composite for artificial bone in which a pattern is formed.
- Titanium oxide-organic polymer composite material for artificial bone is preferably made of tetraethyl titanate as a titanium tetraalkoxide and alcohol. And a composite for artificial bone which forms an apatite according to the above (5), which is obtained by using ethanol as an acid and an inorganic acid as an acid.
- Titanium oxide-organic polymer composites for artificial bone are low density polyethylene as the polyolefin, polyethylene terephthalate as the polyester, and 6-nylon as the nylon.
- Fig. 1 shows a sample (S) with a platinum wire (Pt) fused to one corner of the sample substrate, immersed in a titaure solution (TS) and lifted (PU) at a predetermined speed. This is to explain the step of processing.
- Fig. 2 shows the sample (T.S.S) treated in the process of Fig. 1
- FIG. 3 shows polyethylene (PE), polyester (PET), nylon 6 (Ny1on6) and ethylene-butyl alcohol copolymer treated with the titania solution and hot water of Example 1.
- (EVOH, comparative example) Shows the TF-XRD (thin film X-ray diffraction) pattern after immersing the base material sample in SBF.
- ⁇ is the formed apatite
- ⁇ is the anatase and / or plutoskite structure
- ⁇ is PE or EVOH
- the country is PET or Ny1on detection pattern.
- Fig. 4 shows the FE-SEM (field emission scanning electron microscope) showing the titania solution-treated hot water treated sample of Example 1 and the apatite formation characteristics after immersion in SBF (2 days and 7 days). This is a photograph.
- Figure 5 shows the scottiness of the apatite-forming sample obtained in Example 1.
- 1 shows a FE-SEM (field emission scanning electron microscope) photograph after a peeling test using a pu (registered trademark). The present invention will be described in more detail.
- a polymer compound selected from the group consisting of polyolefin, polyester and nylon can be used. Particularly preferred are low density polyethylene (manufactured by Sumitomo Chemical Co., Ltd.), polyethylene terephthalate (PET, manufactured by Toyo Kasei Co., Ltd.) and 6-nylon (Scientific Polymer Products, Co. Ltd.). You can do it. And the sample (S) in order to confirm the usefulness of the artificial bone, was used to produce the substrate 1 0 XIOX l mm 3.
- the substrate may be of various structures such as a block, a sheet, a fiber, a tape, a filament, a thread, and the like. (Including three-dimensional woven fabric), non-woven fabric, slapper, etc., can be formed into a shape with improved properties as a reinforcing artificial bone.
- Fig. 1 shows the steps of the titanium treatment.
- a platinum wire (Pt) was fused to one corner of the sample substrate (S) prepared in A. above.
- the prepared titanium two ⁇ solution 0 to 5 0 ° C, for example, 2 5 ° seconds between ⁇ 1 week in C, and for example, for 24 hours, the sample p then immersed and 0.1 to the sample: I It was raised at a speed of 0 cm, for example, 2 cm. Drying was carried out at a constant temperature drier (in the air, DK-600, manufactured by Yamato Corporation) at a heating temperature of 30 to 150 ° C. for 24 hours.
- a constant temperature drier in the air, DK-600, manufactured by Yamato Corporation
- the titer-gel is treated with warm water or an aqueous acid solution to form a titer-film having a Ti—OH group in the anatase microcrystal, and the acid concentration is not more than pH 7.
- Hot water or acid to room temperature to 95 ° C solution The conditions of the immersion treatment can be adopted as preferable. That is, it is important to select and combine the above conditions.
- Fig. 2 the case where treatment was performed using an HC1 aqueous solution as an inorganic acid solution was shown (Fig. 2).
- Fig. 2 the hot water treatment of immersing the B. Handling samples in a 0. 1 M hydrochloric acid aqueous solution 8 0 D C 8 days.
- EDX Energy dispersive X-ray spectroscopy
- HORIBA Ltd., product name: EMA X-700.
- XPS X-ray photoelectron spectrometer
- the samples are immersed in 30 mL of SBF adjusted to ⁇ 7.40 and a temperature of 36.5 ° C. for various periods up to a maximum of 7. Remove the sample from the solution, wash gently with ultrapure water, and dry at room temperature.
- Example of aqueous solution supersaturated with respect to apatite (simulated body fluid: SBF, having an inorganic ion concentration approximately equal to that of human plasma.
- SBF simulated body fluid
- Table 1 shows the results of the “Solutions able to reproduce in vivo surface-structure changes in bioactive glass-ceramic AW”, J. Biomed, Mater. Res. 24, 721-734 (1996)].
- the raw materials in Table 2 below were used for preparing a titania solution.
- a solution containing T i PT (3.8687g) and a half amount of C 2 H 5 OH (2.9 g) was prepared, and the solution was cooled on ice to 0 to 10 ° C while cooling.
- a solution consisting of the remaining half of ethanol (2.9 g), water (0.2450 g) and nitric acid (0.0858 g) was added to the solution, and the mixture was hydrolyzed to prepare a tita gel solution. did.
- Each of the press-molded samples was immersed in 10 g of the titania gel solution maintained at 25 ° C. for 24 hours, and treated with the titaya solution. After the immersion, the sample was pulled up at a speed of 2 cmZ, dried in a drier at 80 ° C. for 1 day, and pressed to prepare a titanium solution-treated sample (S).
- the titania solution-treated sample (S) was treated with 0.1 M hydrochloric acid in 1 OmL at 80 for 8 days. It was immersed for a while, and the apatite was modified into a titanium oxide layer capable of forming an apatite layer by contact with a supersaturated aqueous solution.
- Fig. 3 shows that the sample treated with the titania gel solution and the subsequent hot water treatment without silane coupling agent (SC) treatment was immersed in the SBF for 7
- titania hot Peaks attributed to anatase and Z or brookite were observed by water treatment. Seven days after the SBF immersion, peaks attributed to the apatite were observed in all samples.
- Fig. 4 shows FE-SEM photographs of PE, PET, Ny1 on 6, and EVOH immersed in SBF for 2 or 7 days after performing titaure solution and subsequent hot water treatment without SC treatment. Is shown. A thin layer was formed by the one-temperature aqueous treatment of titania. According to EDX measurements, this layer contained titanium. This shows that the titania air layer can be formed on the sample surface by performing the direct titania-only treatment without the SC treatment. Two days after SBF immersion, a substantially uniform apatite layer was formed on the surface of PE, PET, and Ny1on6, but no apatite was formed on the surface of EVOH.
- apatite was also formed on the surface of EVOH, but the amount was very small.
- Fig. 5 shows the FE-SEM photograph of the sample surface after the peeling test using Scotch Tape (registered trademark). In the case of PE, PET and Nylon 6, the aperitite was not peeled off by the peeling test, but in the case of EVOH, the aperitite was peeled from the substrate.
- the titanium oxide-organic polymer composite material of the present invention uses polyolefin, polyester, or nylon as a base material, and has been developed by the present inventors to form titania gel on the base material surface.
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Dermatology (AREA)
- Medicinal Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/560,744 US20060204491A1 (en) | 2004-03-29 | 2004-03-29 | Titanium oxide-organic polymer conjuction suitable for artificial bone |
US12/796,636 US8475826B2 (en) | 2003-07-11 | 2010-06-08 | Titanium oxide-organic polymer conjunction suitable for artificial bone |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003293611A JP4737925B2 (ja) | 2003-07-11 | 2003-07-11 | 人工骨に好適な酸化チタン−有機高分子複合体 |
JP2003-293611 | 2003-07-11 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US10560744 A-371-Of-International | 2004-03-29 | ||
US12/796,636 Continuation US8475826B2 (en) | 2003-07-11 | 2010-06-08 | Titanium oxide-organic polymer conjunction suitable for artificial bone |
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WO2005004940A1 true WO2005004940A1 (ja) | 2005-01-20 |
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WO (1) | WO2005004940A1 (ja) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2002248163A (ja) * | 2001-02-26 | 2002-09-03 | Japan Science & Technology Corp | 水溶液合成により表面に直接酸化チタン層を形成した生体活性酸化チタン被覆材料 |
JP2002272835A (ja) * | 2001-03-16 | 2002-09-24 | Hisashi Ozawa | 水溶液合成により表面に直接酸化チタン層を形成した血液適合性酸化チタン被覆材料 |
JP2002325834A (ja) * | 2001-05-02 | 2002-11-12 | Japan Science & Technology Corp | 人工骨に好適な高分子材料 |
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JPH01291859A (ja) * | 1988-05-17 | 1989-11-24 | Asahi Optical Co Ltd | インプラント材及びその製造方法 |
JP3243685B2 (ja) * | 1995-12-27 | 2002-01-07 | タキロン株式会社 | インプラント材料及びその製造方法 |
JP3853881B2 (ja) * | 1996-10-07 | 2006-12-06 | 明義 尾坂 | 医用インプラント材の表面処理方法及び生体親和性インプラント |
JPH11323570A (ja) * | 1998-05-15 | 1999-11-26 | Mitsubishi Materials Corp | ハイドロキシアパタイト皮膜の形成方法 |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002248163A (ja) * | 2001-02-26 | 2002-09-03 | Japan Science & Technology Corp | 水溶液合成により表面に直接酸化チタン層を形成した生体活性酸化チタン被覆材料 |
JP2002272835A (ja) * | 2001-03-16 | 2002-09-24 | Hisashi Ozawa | 水溶液合成により表面に直接酸化チタン層を形成した血液適合性酸化チタン被覆材料 |
JP2002325834A (ja) * | 2001-05-02 | 2002-11-12 | Japan Science & Technology Corp | 人工骨に好適な高分子材料 |
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JP4737925B2 (ja) | 2011-08-03 |
JP2005028081A (ja) | 2005-02-03 |
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