WO1995015775A1 - Implantation material and process for producing the same - Google Patents
Implantation material and process for producing the same Download PDFInfo
- Publication number
- WO1995015775A1 WO1995015775A1 PCT/JP1994/002066 JP9402066W WO9515775A1 WO 1995015775 A1 WO1995015775 A1 WO 1995015775A1 JP 9402066 W JP9402066 W JP 9402066W WO 9515775 A1 WO9515775 A1 WO 9515775A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydroxyapatite
- polymer
- oligomer
- less
- drying
- Prior art date
Links
Classifications
-
- 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
- A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
- A61L29/12—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material
- A61L29/126—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S623/00—Prosthesis, i.e. artificial body members, parts thereof, or aids and accessories therefor
- Y10S623/92—Method or apparatus for preparing or treating prosthetic
- Y10S623/923—Bone
Definitions
- the present invention relates to a bioimplant material and a method for producing the same.
- a contrast line using a contrast agent such as barium sulfate and oxidized stainless steel embedded in a catheter or the like may cause a tear or the like along the contrast line or the like, and is an anxious factor in strength.
- a material obtained by mixing a contrast agent into the material itself and having a contrast property may cause invasion of the living body due to the dissolution of the contrast agent.
- hydroxyapatite is known to have excellent affinity for living organisms, and has been clinically applied to artificial bones and the like. However, it is much harder than living tissue and lacks elasticity and flexibility, making it unsuitable for materials applied to soft tissues such as force catheters. Disclosure of the invention
- the present invention provides a function as a substitute for a long period of time without causing inflammation in a living body, has flexibility and elasticity, and has biocompatibility and contrast. High contrast and requires a contrast line It is an object of the present invention to provide an unnecessary bioimplant material.
- a bioimplant material comprising a mixture of a hydroxyapatite ultrafine powder having a particle size of 2 zm or less and a polymer or oligomer.
- a method for producing a bio-implantable material comprising drying or heating a wet-synthesized hydroxyapatite to form an ultrafine powder, and then mixing the resultant with a polymer or an oligomer.
- FIG. 1 and 2 are graphs showing the results of Example 1.
- FIG. 1 shows the changes in the tensile strength and tear strength of the silicone rubber depending on the amount of the hydroxyapatite (HA) added
- FIG. The figure shows the change in the thickness of the fibrous cap formed around the sample with the amount of droxapatite (HA) added.
- composition, shape or structure, mode of use, and the like of the bioimplant material of the present invention will be described in detail.
- the in "high Dorokishiapatai bets" in the present invention not only pure product whose chemical composition is represented by Ca 10 (P0 4) 6 ( OH) 2, 1 ⁇ 10% of Kabone bets instead of 0H ions ( C0 3) ions and fluorine, may contain such as chlorine ions. This also is the is to mainly sinterability.
- Hydroxyapatite having the above components has a CaZP molar ratio of 1.67, but is a calcium phosphate compound such as calcium-deficient apatite, tricalcium phosphate, tetracalcium phosphate, and octacalcium phosphate. Or a complex of two or more of them has almost the same function as hydroxyapatite.
- Hydroxyapatite fine powder is prepared by gradually lowering an aqueous solution of phosphoric acid to a 0.5M calcium hydroxide suspension and uniformly reacting with stirring, and filtering the amorphous hydroxypatite obtained at 60 ° C. After drying with C, it can be obtained using an ultra-fine pulverizer such as a jet mill. This is dried to eliminate foaming due to kneading with the polymer at 150 to 350 ° C and water evaporation during molding, and it is possible to produce a uniform composite material. At this point, the fine powder becomes a low crystalline hydroxyapatite and the primary particles are several hundred angstroms.
- Agglomerated secondary particles are about 2 microns, but are easily disintegrated and dispersed in a sufficient kneading process with the polymer using a kneader, emulsifier, or homogenizer. Particle dispersion of hundreds of angstroms not only has the effect of minimizing the strength loss of the composite, but can also be distributed between polymer chains, so that particles and matrix polymer can be distributed as in larger particles. There is no need to add a coupling material in consideration of the bonding strength and adhesive strength with the resin.
- the particle size is much smaller than the average cell size of about 1 micron, so the foreign particle reaction and cell phagocytic reaction caused by the particles are slight. . Furthermore, since the dissolution rate of hydroxyapatite is higher than that of highly crystalline ones, the effect of enhancing biocompatibility also appears earlier.
- the hydroxyapatite becomes highly crystalline and the particle surrounding soil starts to sinter, so that grain growth proceeds. Due to this, the above-mentioned problems are caused, and the strength of the composite material is only reduced. In addition, the tissue reaction is worse than the non-added one.
- hydroxyapatite has been known to grow from about 70 (TC or higher) . If the heat treatment temperature is 700 ° C or lower, foreign body giant cells may appear when implanted in a living body. However, the tissue reaction is poor, and it is considered to be most biocompatible when heated at 800 ° C to 900 ° C.However, we have conducted animal experiments and found that hydroxyapatite was heated at 800 ° C. It has been found that the silicone rubber composite material mixed with the above powder induces infiltration of inflammatory cells and worsens the tissue reaction as compared to the silicone rubber not mixed.
- Silicone-based oligomers have been used as tissue augmentation materials for cosmetic surgery, such as artificial breasts. However, they have a strong inflammatory tissue reaction and conversely cause the surrounding soft tissues to become extremely thick, causing problems such as dullness. O
- the hydroxyapatite used in the present invention is preferably in the form of ultra-fine particles. Even during production, since heating and growth at a high temperature cause grain growth accompanying crystallization, the hydroxyapatite should be dried at a temperature as low as possible and in a short time.
- An ideal composite material can be proposed that suppresses agglomeration by performing pulverization using an ultrafine pulverizer or the like, thereby suppressing the decrease in the strength of the base material and expressing the biocompatibility of hydroxyapatite. Also, by setting the temperature at such a low temperature, the cost of the manufacturing equipment can be kept low.
- the drying condition is to dry at 200 ° C or less in order to suppress grain growth and agglomeration of particles. However, freeze-drying, vacuum drying and the like are more effective.
- a heat treatment at about 400 ° C may be performed to promote the drying described above, but grain growth and agglomeration of the particles are inevitable.In this case, the particle size before heating is controlled to 5 zm or less. However, a somewhat good composite material can be obtained.
- the properties of the base material polymer or oligomer can be sufficiently improved. It was possible to significantly reduce biological reactions while maintaining the same.
- polymers examples include polyethylene, polypropylene, methyl methacrylate, polyurethane, polyester, acrylonitrile butadiene / styrene resin, polycarbonate, polysulfone, epoxy resin, silicone resin, and diacrylphthalate.
- Resin. Can be selected from furan resin. These resins are also S i C, contain S i 0 2, A 1 2 0 3, Zr0 2, Ti 0 2, W, Mo, stainless steel, the reinforcing material or other Huy La one made of titanium metal, etc. Is also good.
- a typical example of the oligomer is a silicone, but the oligomer described above may be another polymer material.
- the wet-synthesized ultra-fine hydroxyapatite powder with a particle size of 5 or less is dried at 400 ° C for 24 hours, then mixed with the addition-type silicone rubber compound at 5, 15, and 30% by weight, and thoroughly mixed. After that, it was formed into a 2 mm thick sheet. Thereafter, secondary vulcanization was performed.
- the tear strengths were 14, 24, 26, and 21 kgfZcm, respectively. It was confirmed that the tear strength was increased by the addition of hide mouth xiapatite, and that the added amount had a maximum value at around 15% by weight. ( Figure 1 )
- the fibrous cap formed around the composite material showed a tendency to be thinner when compared to the case of silicone alone and that the mixture containing hydroxyapatite was thinner and the tissue reaction was slight.
- the thickness of the coating around the composite material was about 365, 290, 25, and 150 m for hydroxyabutate at 0, 5, 15, and 30% by weight, respectively.
- the surrounding film was found to be the thinnest.
- the specific surface area contributing to a heat treatment at 60 ° C to about 95nf // g, 400 e C with those obtained by heat treatment of about 50 nF / g, 800 ° that is heat treated at C is about 15n g there were.
- the results show that drying at a lower temperature can increase the specific surface area, that is, the grain growth and agglomeration due to crystallization can be suppressed to a low level.
- the present invention functions as a substitute for a long period of time in vivo, prevents inflammation and the like, has flexibility and elasticity, and is excellent in biocompatibility and contrast properties. It has effects such as not requiring a component.
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Composite Materials (AREA)
- Epidemiology (AREA)
- Transplantation (AREA)
- Inorganic Chemistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Medicinal Chemistry (AREA)
- Dermatology (AREA)
- Materials For Medical Uses (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95902928A EP0684046A4 (en) | 1993-12-10 | 1994-12-08 | IMPLANTATION MATERIAL AND PROCESS FOR PRODUCING THE SAME. |
US08/501,041 US5766247A (en) | 1993-12-10 | 1994-12-08 | Process for producing a bioimbedding material |
KR1019950703306A KR960700676A (ko) | 1993-02-12 | 1994-12-08 | 생체 이식재 및 그 제조방법(implantation material and process for producing the same) |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5/340914 | 1993-12-10 | ||
JP34091493A JP3472970B2 (ja) | 1993-12-10 | 1993-12-10 | 生体埋め込み材料の製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995015775A1 true WO1995015775A1 (en) | 1995-06-15 |
Family
ID=18341470
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1994/002066 WO1995015775A1 (en) | 1993-02-12 | 1994-12-08 | Implantation material and process for producing the same |
Country Status (8)
Country | Link |
---|---|
US (1) | US5766247A (ja) |
EP (1) | EP0684046A4 (ja) |
JP (1) | JP3472970B2 (ja) |
KR (1) | KR960700676A (ja) |
CN (1) | CN1119832A (ja) |
CA (1) | CA2156059A1 (ja) |
TW (1) | TW296345B (ja) |
WO (1) | WO1995015775A1 (ja) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5728753A (en) * | 1995-11-09 | 1998-03-17 | University Of London | Bioactive composite material for repair of hard and soft tissues |
FR2805748B1 (fr) | 2000-03-01 | 2002-09-13 | Ceravic | Procede de preparation d'un materiau pateux phosphocalcique injectable en vue de former un biomateriau apatitique et application chirurgicale ou dentaire |
US7067577B2 (en) * | 2000-10-16 | 2006-06-27 | Asahi Kasei Kabushiki Kaisha | Apatite-reinforced resin composition |
DE10055465A1 (de) * | 2000-11-09 | 2002-05-23 | Blz Gmbh | Knochenersatzwerkstoff und Verfahren zur Herstellung eines Knochenersatz-Implantats |
US6562069B2 (en) | 2001-09-19 | 2003-05-13 | St. Jude Medical, Inc. | Polymer leaflet designs for medical devices |
US7067169B2 (en) * | 2003-06-04 | 2006-06-27 | Chemat Technology Inc. | Coated implants and methods of coating |
EP1909859B1 (en) * | 2005-07-21 | 2017-09-06 | aap Biomaterials GmbH | Method for producing hydroxyapatite particles, in particular subnanodisperse hydroxyapatite particles in a matrix |
US8936805B2 (en) | 2005-09-09 | 2015-01-20 | Board Of Trustees Of The University Of Arkansas | Bone regeneration using biodegradable polymeric nanocomposite materials and applications of the same |
US9763788B2 (en) | 2005-09-09 | 2017-09-19 | Board Of Trustees Of The University Of Arkansas | Bone regeneration using biodegradable polymeric nanocomposite materials and applications of the same |
KR101369388B1 (ko) | 2005-11-14 | 2014-03-06 | 바이오메트 쓰리아이 엘엘씨 | 임플란트 표면상에 이산 나노입자의 증착방법 |
JP2011010549A (ja) * | 2007-10-29 | 2011-01-20 | Univ Of Tokyo | ポリエチレングリコールの結合した核酸のコンジュゲートとリン酸カルシウムの有機−無機ハイブリッド型ナノ粒子 |
JP5806466B2 (ja) | 2008-01-28 | 2015-11-10 | バイオメット・3アイ・エルエルシー | 親水性を向上させたインプラント表面 |
US9180137B2 (en) | 2010-02-09 | 2015-11-10 | Bone Support Ab | Preparation of bone cement compositions |
US8641418B2 (en) | 2010-03-29 | 2014-02-04 | Biomet 3I, Llc | Titanium nano-scale etching on an implant surface |
WO2013142118A1 (en) | 2012-03-20 | 2013-09-26 | Biomet 3I, Llc | Surface treatment for an implant surface |
US10294107B2 (en) * | 2013-02-20 | 2019-05-21 | Bone Support Ab | Setting of hardenable bone substitute |
EP2968662B1 (en) * | 2013-03-15 | 2018-11-21 | Board of Trustees of the University of Arkansas | Bone regeneration using biodegradable polymeric nanocomposite materials and applications of the same |
US9989482B2 (en) * | 2016-02-16 | 2018-06-05 | General Electric Company | Methods for radiographic and CT inspection of additively manufactured workpieces |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63153072A (ja) * | 1986-08-12 | 1988-06-25 | 牧嶋 和見 | 医用形成材料 |
JPH01268560A (ja) * | 1988-04-20 | 1989-10-26 | Advance Co Ltd | リン酸カルシウムセラミックスインプラントの製造方法 |
JPH0251475A (ja) * | 1988-04-27 | 1990-02-21 | Ibiden Co Ltd | 繊維強化りん酸カルシウム系化合物セラミックスおよびその製造方法 |
JPH0382474A (ja) * | 1989-08-25 | 1991-04-08 | Junkosha Co Ltd | 医療用チューブ |
JPH03502651A (ja) * | 1987-12-17 | 1991-06-20 | ユナイテッド・ステーツ・サージカル・コーポレーション | 反復カーボネート単位を含むホモポリマーおよびコポリマーから製造された医療用具 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6021763A (ja) * | 1983-07-15 | 1985-02-04 | ティーディーケイ株式会社 | 人工骨材料 |
JPS63183069A (ja) * | 1987-01-27 | 1988-07-28 | 旭光学工業株式会社 | インプラント材料およびその製造方法 |
US5178845A (en) * | 1988-04-20 | 1993-01-12 | Norian Corporation | Intimate mixture of calcium and phosphate sources as precursor to hydroxyapatite |
US5306500A (en) * | 1988-11-21 | 1994-04-26 | Collagen Corporation | Method of augmenting tissue with collagen-polymer conjugates |
US5073373A (en) * | 1989-09-21 | 1991-12-17 | Osteotech, Inc. | Flowable demineralized bone powder composition and its use in bone repair |
-
1993
- 1993-12-10 JP JP34091493A patent/JP3472970B2/ja not_active Expired - Fee Related
-
1994
- 1994-12-08 KR KR1019950703306A patent/KR960700676A/ko not_active Application Discontinuation
- 1994-12-08 US US08/501,041 patent/US5766247A/en not_active Expired - Fee Related
- 1994-12-08 WO PCT/JP1994/002066 patent/WO1995015775A1/ja not_active Application Discontinuation
- 1994-12-08 EP EP95902928A patent/EP0684046A4/en not_active Withdrawn
- 1994-12-08 CN CN94191562A patent/CN1119832A/zh active Pending
- 1994-12-08 CA CA002156059A patent/CA2156059A1/en not_active Abandoned
- 1994-12-09 TW TW083111494A patent/TW296345B/zh active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63153072A (ja) * | 1986-08-12 | 1988-06-25 | 牧嶋 和見 | 医用形成材料 |
JPH03502651A (ja) * | 1987-12-17 | 1991-06-20 | ユナイテッド・ステーツ・サージカル・コーポレーション | 反復カーボネート単位を含むホモポリマーおよびコポリマーから製造された医療用具 |
JPH01268560A (ja) * | 1988-04-20 | 1989-10-26 | Advance Co Ltd | リン酸カルシウムセラミックスインプラントの製造方法 |
JPH0251475A (ja) * | 1988-04-27 | 1990-02-21 | Ibiden Co Ltd | 繊維強化りん酸カルシウム系化合物セラミックスおよびその製造方法 |
JPH0382474A (ja) * | 1989-08-25 | 1991-04-08 | Junkosha Co Ltd | 医療用チューブ |
Non-Patent Citations (1)
Title |
---|
See also references of EP0684046A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP0684046A1 (en) | 1995-11-29 |
CN1119832A (zh) | 1996-04-03 |
US5766247A (en) | 1998-06-16 |
KR960700676A (ko) | 1996-02-24 |
JPH07178158A (ja) | 1995-07-18 |
TW296345B (ja) | 1997-01-21 |
JP3472970B2 (ja) | 2003-12-02 |
CA2156059A1 (en) | 1995-06-15 |
EP0684046A4 (en) | 1996-05-15 |
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