JPH07155342A - Artificial bone - Google Patents
Artificial boneInfo
- Publication number
- JPH07155342A JPH07155342A JP30817293A JP30817293A JPH07155342A JP H07155342 A JPH07155342 A JP H07155342A JP 30817293 A JP30817293 A JP 30817293A JP 30817293 A JP30817293 A JP 30817293A JP H07155342 A JPH07155342 A JP H07155342A
- Authority
- JP
- Japan
- Prior art keywords
- bone
- artificial bone
- artificial
- present
- joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 88
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000000919 ceramic Substances 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000011195 cermet Substances 0.000 claims abstract description 3
- 239000000835 fiber Substances 0.000 abstract description 4
- 210000002808 connective tissue Anatomy 0.000 abstract description 3
- 150000002739 metals Chemical class 0.000 abstract 1
- 210000001519 tissue Anatomy 0.000 description 11
- 230000006870 function Effects 0.000 description 6
- 210000001185 bone marrow Anatomy 0.000 description 5
- 210000000515 tooth Anatomy 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 210000004394 hip joint Anatomy 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 241000282472 Canis lupus familiaris Species 0.000 description 2
- 241000938605 Crocodylia Species 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000000975 bioactive effect Effects 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000001124 body fluid Anatomy 0.000 description 2
- 239000010839 body fluid Substances 0.000 description 2
- 210000000845 cartilage Anatomy 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 2
- 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 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000007634 remodeling Methods 0.000 description 2
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000003462 bioceramic Substances 0.000 description 1
- 230000010072 bone remodeling Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001054 cortical effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000010883 osseointegration Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000002054 transplantation Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、本来の骨と人工骨と
を結合組織（シャーピー線維）付着様式で接合する人工
骨に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial bone that joins an original bone and an artificial bone in a connective tissue (Sharpie fiber) attachment mode.
【０００２】[0002]
【従来の技術】骨折したり摩耗した自然の骨に代えて、
人工の成形物を自然の骨に癒着・接合したり、自然の骨
をある部分で人工のものにとり代えることが行われてい
る。しかし、人工骨には材料の特性や技術面に未解決の
問題が残っている。従来の人工骨は、骨と金属又は骨と
セラミックスという剛体どうしを骨性癒着や骨接合とい
った剛システムで結合させるものである。骨と金属又は
骨とセラミックスとはヤング率とポアソン比が異なるも
のであるため、反復性の荷重下では時間の経過とともに
両者は離開を生ずる。結合にセメント等を介在させてヤ
ング率やポアソン比の相違を少しでもやわらげた形の傾
斜勾配とすることも考えられているが、破壊に対して十
分ではない。このことは人工骨を実用化するに当って致
命的な問題であった。2. Description of the Related Art Instead of natural bones that are broken or worn,
BACKGROUND ART Artificial molded articles are adhered and joined to natural bones, or natural bones are replaced with artificial ones at a certain portion. However, artificial bones still have unsolved problems in material properties and technical aspects. A conventional artificial bone is a system in which rigid bodies such as bone and metal or bone and ceramics are joined together by a rigid system such as osseous fusion or osseointegration. Since Young's modulus and Poisson's ratio are different between bone and metal or between bone and ceramics, under repetitive loading, the two become separated with the passage of time. It is also considered that cement or the like is interposed in the bond to make the difference in Young's modulus and Poisson's ratio slightly softer, but this is not sufficient for fracture. This was a fatal problem in putting the artificial bone into practical use.
【０００３】生体には異なった可動機能を持つ硬組織
間、例えば骨と骨、骨と軟骨、骨と歯など、や材料係数
の異なる硬組織間（荷重下では必ず異なった力学対応を
生じる）には次の４種類の結合様式が存在する。すなわ
ち、（１）線維結合、（２）軟骨結合、（３）滑膜性結
合（狭義の関節）、（４）骨性結合である。この中で骨
性結合のみは材料係数の等しい骨同志が生長段階で別々
に大きくなり生長が完了した時に、一体の骨として関節
部が化骨するので、異なった可動機能を失う結果一つの
骨になる現象である。哺乳動物の骨格系には、剛体を剛
システムで結合する様式は存在していない。剛の結合の
システムは、一時的機能を生涯にわたり繰り返す化石爬
虫類や、現生の爬虫類の歯と顎骨との結合にのみ見出す
ことができる。しかし、この段階のシステムは歯と顎骨
の弾性係数の違いから、使用中に必ず破損が起こるた
め、歯の破折・脱落・再萌芽を繰り返すものである。In living organisms, between hard tissues having different movable functions, for example, bone and bone, bone and cartilage, bone and tooth, and hard tissues having different material coefficients (although different mechanical correspondences are always generated under load). There are the following four types of binding modes. That is, there are (1) fiber bond, (2) cartilage bond, (3) synovial bond (joint in a narrow sense), and (4) bony bond. Among these, only the osseointegrated bones, which have the same material coefficient, grow differently at the growth stage and when the growth is completed, the joints become ossified as an integral bone, resulting in the loss of different mobile functions. It is a phenomenon that becomes. In the mammalian skeletal system, there is no way to connect rigid bodies with a rigid system. The rigid connection system can only be found in fossil reptiles, which repeat their transient functions throughout life, and in the connection between the teeth and jawbones of modern reptiles. However, the system at this stage repeats fracture, loss, and sprouting of teeth because the teeth and jaw bones are always damaged during use due to the difference in elastic modulus between them.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、従来の人工
骨の欠点を克服し、生体特有のしなやかさを持つ柔構造
の線維組織を介して骨と結合する人工骨を提供すること
を目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to overcome the drawbacks of conventional artificial bones and to provide an artificial bone that is bonded to bone through a flexible fibrous tissue having flexibility peculiar to a living body. And
【０００５】[0005]
【課題を解決するための手段】本発明者は上記目的を達
成するため鋭意検討した結果、材質が金属又はセラミッ
クにかかわらず、人工骨の形態と内部構造を工夫するこ
とにより上記目的が達成されるとの知見を得た。本発明
は、内部が中空状であって、表面の中空状の内部との間
に多数の貫通孔を有することを特徴とする人工骨であ
る。更に、内部が中空状であって外形が波状円筒形の人
工骨である。Means for Solving the Problems As a result of intensive studies for achieving the above object, the present inventor has achieved the above object by devising the form and internal structure of artificial bone regardless of whether the material is metal or ceramic. I got the knowledge that. The present invention is an artificial bone characterized by having a hollow interior and having a large number of through-holes between the interior and the hollow interior. Furthermore, the artificial bone has a hollow inside and a wavy cylindrical outer shape.
【０００６】以下、本発明の要旨である各構成要件を従
来例と比較しながら説明する。図６は従来の人工股関節
の１例の外観を示すもので、その表面はなめらかであ
り、全体としても中空ではない。これに対して、図１は
本願発明の人工関節の１例の外観を示すものであり、図
２はその断面図である。人工股関節１のステムの表面に
は、膨隆部２と陥凹部３が交互に設けられ全体として波
状となっている。人工関節１の内部は中空部４となって
いる。そして該中空部４と外部は多数設けられた貫通孔
５により通じている。The respective constituent features, which are the gist of the present invention, will be described below in comparison with a conventional example. FIG. 6 shows the appearance of an example of a conventional artificial hip joint, the surface of which is smooth and not entirely hollow. On the other hand, FIG. 1 shows an appearance of an example of the artificial joint of the present invention, and FIG. 2 is a sectional view thereof. On the surface of the stem of the artificial hip joint 1, swelled portions 2 and recessed portions 3 are alternately provided and have a wavy shape as a whole. The inside of the artificial joint 1 is a hollow portion 4. The hollow portion 4 communicates with the outside through a large number of through holes 5.
【０００７】人工骨の内部が中空状であることは、人工
骨としての強度を維持しつつ、軽量化を図るものであ
る。又、貫通孔によって外部と通じているという特徴に
あいまって、詳しく後述するように、中空部内に骨髄組
織が生成するという驚くべき作用をもたらすことが判明
した。例えば、図４に示されるようなヒドロキシアパタ
イトを用いた円筒形人工骨を移植することにより内部に
骨髄が形成されることが実験により確認された。The hollow inside of the artificial bone is intended to reduce the weight while maintaining the strength of the artificial bone. Further, it has been found that, due to the characteristic of being communicated with the outside through the through hole, as will be described later in detail, the bone marrow tissue is generated in the hollow portion, which is a surprising effect. For example, it was confirmed by an experiment that bone marrow is formed inside by implanting a cylindrical artificial bone using hydroxyapatite as shown in FIG.
【０００８】人工骨の表面と中空状の内部が多数の貫通
孔によって通じていることは、血液や体液が中空部内に
循環し、骨髄組織の生成を促進するとともに、これを維
持させる機能を有するものである。貫通孔の孔径は、人
工骨の材質、人工骨が適用された部位によっても異なる
が、約４ｍｍから６ｍｍである。これより小さいと血
液、体液の循環が十分でないうえに、時間の経過ととも
に閉そくすることもある。又、これより大きいと人工骨
の破損の問題が生ずる。The fact that the surface of the artificial bone communicates with the hollow interior through a large number of through holes has the function of circulating blood and body fluid in the hollow portion, promoting the production of bone marrow tissue, and maintaining it. It is a thing. The hole diameter of the through hole is about 4 mm to 6 mm, though it varies depending on the material of the artificial bone and the site to which the artificial bone is applied. If it is smaller than this, blood and body fluid may not circulate sufficiently and may also become blocked with the passage of time. On the other hand, if it is larger than this, a problem of breakage of the artificial bone occurs.
【０００９】本発明の人工骨は、一般に外科的に代替手
術が可能な骨であればどれにも適用が可能である。特
に、関節に適する。その中でも股、肘、膝、顎、手指等
に適用される。又、本発明では、人工骨の表面に膨隆部
と陥凹部が交互に形成された中空状で、かつ波状円筒形
態である場合を含む。図５は本発明の波状円筒形人工骨
を示す。The artificial bone of the present invention can be applied to any bone that can be surgically operated as an alternative. Especially suitable for joints. Among them, it is applied to crotch, elbow, knee, jaw, finger and so on. Further, the present invention includes the case where the artificial bone has a hollow and wavy cylindrical shape in which bulges and depressions are alternately formed on the surface. FIG. 5 shows a corrugated cylindrical artificial bone of the present invention.
【００１０】表面に膨隆部と陥凹部が交互に形成された
波状円筒形状であることにより、人工骨から周囲の骨へ
の応力の伝達が直接的となることを避け、周囲骨への応
力分散と均等化が行われる。しかも該形状は、図６に示
されるようななめらかな表面を有する従来例と比べて、
人工骨周辺に極めて薄い線維組織の生成を促進する効果
を有し、これにより人工骨が安定して体内で固定される
とともに、人工骨の周囲の骨も長期に安定して骨の新生
と改造を維持することができる。線維骨の外層には皮質
骨が形成されるため反復荷重下でも長期に骨組織の改造
が維持される。図３は図１，２で示される人工骨を移植
した後の断面図である。人工骨１と骨６の間に線維組織
７が形成されている。The wavy cylindrical shape in which bulges and depressions are alternately formed on the surface avoids the direct transmission of stress from the artificial bone to the surrounding bone, and disperses the stress to the surrounding bone. And equalization is performed. Moreover, the shape is more than that of the conventional example having a smooth surface as shown in FIG.
It has the effect of promoting the generation of extremely thin fibrous tissue around the artificial bone, which stabilizes the artificial bone in the body and also stabilizes the bone around the artificial bone for a long period of time to regenerate and remodel the bone. Can be maintained. Since cortical bone is formed in the outer layer of fibrous bone, the remodeling of bone tissue is maintained for a long period of time even under repeated loading. FIG. 3 is a cross-sectional view after implanting the artificial bone shown in FIGS. A fibrous tissue 7 is formed between the artificial bone 1 and the bone 6.
【００１１】このものは、形状の異なる同一材料の人工
骨の生体反応を研究するとともに、有限要素解析による
形状効果の研究に基づいて開発されたものである。波状
形態の人工骨では荷重下で主応力線が人工骨の表面で直
交する二成分に変換されることを明らかにした。骨柱
（骨組織の単位）は適度な強さの主応力線の走行に従っ
て形成される性質を有するから、応力を分散しつつ主応
力線を分離する形状が周囲骨の改造には有利である。こ
れにより骨の力学刺激による破壊を防止することが可能
となる。さらに、有限要素解析と動物実験結果との対比
により両者はほぼ一致した。本発明の人工骨の周囲には
繊維組織が形成されるが、波状形態の膨隆部２の付近で
は線維組織の多くは平行又は斜めに走行し、陥凹部３で
は直角に走向して人工骨に付着する。本発明の人工骨で
表面を波状形態とすることの理由は以上のとおりであ
る。本発明の人工骨の材料は金属、セラミックスまたは
サーメットである。This has been developed on the basis of research on the biological reaction of artificial bones of the same material having different shapes, and research on the shape effect by finite element analysis. It was clarified that the principal stress line is transformed into two orthogonal components on the surface of the artificial bone under the load in the corrugated artificial bone. Since the trabecular bone (unit of bone tissue) has the property of being formed according to the running of the main stress line of appropriate strength, the shape that separates the main stress line while dispersing the stress is advantageous for remodeling the surrounding bone. . This makes it possible to prevent destruction of the bone due to mechanical stimulation. In addition, the comparison between the finite element analysis and the animal experiment results showed that the two were in good agreement. Although a fibrous tissue is formed around the artificial bone of the present invention, most of the fibrous tissue runs parallel or obliquely in the vicinity of the corrugated bulge 2 and runs at a right angle in the recess 3 to form the artificial bone. Adhere to. The reason why the surface of the artificial bone of the present invention has a wavy shape is as described above. The material of the artificial bone of the present invention is metal, ceramics or cermet.
【００１２】金属材料の中でも適当なものについて説明
する。純ＴｉやＴｉ合金は、生体用の金属材料として医
科および歯科の分野で幅広い応用が試みられている。特
に、純Ｔｉは生体為害性が極めて少なく、生体との親和
性が良いため、体内に挿入する人工骨として適してい
る。また、形状記憶効果を利用することで挿入後の固定
が容易に行える利点を活かし、Ｔｉ系の形状記憶合金を
人工骨として実用化する研究も行われている。その中で
もＴｉＰｄ系形状記憶合金は、歯科で長年用いられてき
たＰｄと耐食性に優れたＴｉを主組成とする合金であ
り、生体為害性の少ない人工骨用の材料として用いるこ
とができる。Suitable metal materials will be described below. Pure Ti and Ti alloys have been tried to be widely applied in the fields of medicine and dentistry as metallic materials for living bodies. In particular, pure Ti is suitable as an artificial bone to be inserted into the body, since it has extremely low biotoxicity and good affinity with the living body. In addition, studies have also been conducted to put a Ti-based shape memory alloy into practical use as an artificial bone, taking advantage of the advantage that it can be easily fixed after insertion by utilizing the shape memory effect. Among them, the TiPd-based shape memory alloy is an alloy mainly composed of Pd, which has been used in dentistry for many years, and Ti, which is excellent in corrosion resistance, and can be used as a material for artificial bones that is less harmful to the living body.
【００１３】セラミックス材料は一般に親水性であり、
生体となじみやすいので本発明に適している。特にバイ
オセラミックスと呼ばれるものが好適である。生体とほ
とんど化合反応しないバイオイナートであるアルミナ、
ジルコニアや、逆に生体と反応するバイオアクティブで
ある３ＣａＯ・Ｐ2Ｏ5多孔質体、水酸アパタイト、アパ
イト含有結晶化ガラスが好適である。以上の金属材料や
セラミック材料はあくまで例示であって、本願発明はこ
れらのみに限定されるものではない。Ceramic materials are generally hydrophilic,
It is suitable for the present invention because it is easily compatible with the living body. What is called bioceramics is particularly suitable. Alumina, a bio-inert that hardly undergoes a chemical reaction with living organisms,
Zirconia and, conversely, bioactive 3CaO.P 2 O 5 porous material, hydroxyapatite, and apite-containing crystallized glass, which are bioactive, are suitable. The above metal materials and ceramic materials are merely examples, and the present invention is not limited to these.
【００１４】[0014]
【実施例】本発明の人工骨は用いる部位および材料によ
って最適の形状が異なる。以下それ等を具体的に図面に
よって説明する。図１は人間および犬の股関節用の人工
関節の外観説明図である。図４は円筒形人工骨（ＨＡ
ｐ）の説明図である。これを成犬に対して移植実験した
ところ内部に骨髄が形成されるとともに荷重下では骨性
癒着せず薄い線維組織を介して骨と結合することを確認
した。EXAMPLES The optimum shape of the artificial bone of the present invention differs depending on the site and material used. These will be specifically described below with reference to the drawings. FIG. 1 is an external view of artificial joints for hip joints of humans and dogs. Figure 4 shows a cylindrical artificial bone (HA
It is explanatory drawing of p). When this was transplanted to an adult dog, it was confirmed that bone marrow was formed inside and that it did not undergo bony adhesions under load and bound to bone through a thin fibrous tissue.
【００１５】[0015]
【発明の効果】以上説明したように、本発明の人工骨は
結合組織付着を形成するので、従来の人工骨に比較する
と応力が極めて有効に分散され、骨の改造が長期的に維
持されるため破壊されにくく、長期に安定である。又、
内部に骨髄組織が形成されるので形態と機能の調和した
人工器官として、優れた機能を発揮するものである。As explained above, since the artificial bone of the present invention forms connective tissue attachment, stress is dispersed very effectively and the bone remodeling is maintained for a long period of time as compared with the conventional artificial bone. Therefore, it is not easily destroyed and is stable for a long time. or,
Since bone marrow tissue is formed inside, it exhibits excellent functions as an artificial organ with a harmonized form and function.
【図１】本発明の人工骨の１例である人工関節の外観説
明図、FIG. 1 is an external view of an artificial joint which is an example of the artificial bone of the present invention,
【図２】図１で示される人工関節の断面図、2 is a sectional view of the artificial joint shown in FIG. 1,
【図３】本発明の人工関節の移植後の説明図、FIG. 3 is an explanatory view after transplantation of the artificial joint of the present invention,
【図４】本発明の１例である円筒形状の人工骨の説明
図、FIG. 4 is an explanatory view of a cylindrical artificial bone which is an example of the present invention,
【図５】本発明の１例である波状円筒形状の人工骨の説
明図、FIG. 5 is an explanatory view of an artificial bone having a wavy cylindrical shape, which is an example of the present invention.
【図６】従来の人工関節の外観説明図。FIG. 6 is an external view of a conventional artificial joint.
１ 人工関節 ２ 膨隆部 ３ 陥凹部 ４ 中空部 ５ 貫通孔 ６ 骨 ７ 線維関節 ８ 円筒形状の人工骨 DESCRIPTION OF SYMBOLS 1 Artificial joint 2 Swelling part 3 Recessed part 4 Hollow part 5 Through hole 6 Bone 7 Fiber joint 8 Cylindrical artificial bone
Claims (5)
内部との間に多数の貫通孔を有することを特徴とする人
工骨。1. An artificial bone characterized by having a hollow interior and having a large number of through holes between the surface and the hollow interior.
形成された波状円筒形態である請求項１記載の人工骨。2. The artificial bone according to claim 1, wherein the artificial bone has a corrugated cylindrical shape in which bulges and depressions are alternately formed on the surface of the artificial bone.
求項１または２記載の人工骨。3. The artificial bone according to claim 1 or 2, wherein the artificial bone is an artificial bone portion of an artificial joint.
項１，２または３記載の人工骨。4. The artificial bone according to claim 1, wherein the material forming the artificial bone is a metal.
たはサーメットである請求項１，２または３記載の人工
骨。5. The artificial bone according to claim 1, wherein the material forming the artificial bone is ceramics or cermet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30817293A JPH07155342A (en) | 1993-12-08 | 1993-12-08 | Artificial bone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30817293A JPH07155342A (en) | 1993-12-08 | 1993-12-08 | Artificial bone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07155342A true JPH07155342A (en) | 1995-06-20 |
Family
ID=17977774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30817293A Pending JPH07155342A (en) | 1993-12-08 | 1993-12-08 | Artificial bone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07155342A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01153154A (en) * | 1987-09-18 | 1989-06-15 | Howmedica Internatl Inc Zweignied Kiel | Femoral part of hip joint prosthesis |
| JPH01313052A (en) * | 1988-04-27 | 1989-12-18 | Thera G Fur Patentverwelt Mbh | Artificial prosthetic shaft |
-
1993
- 1993-12-08 JP JP30817293A patent/JPH07155342A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01153154A (en) * | 1987-09-18 | 1989-06-15 | Howmedica Internatl Inc Zweignied Kiel | Femoral part of hip joint prosthesis |
| JPH01313052A (en) * | 1988-04-27 | 1989-12-18 | Thera G Fur Patentverwelt Mbh | Artificial prosthetic shaft |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5282861A (en) | Open cell tantalum structures for cancellous bone implants and cell and tissue receptors | |
| AU672081B2 (en) | Process for treating a metallic surgical implant | |
| von Wilmowsky et al. | Implants in bone: Part I. A current overview about tissue response, surface modifications and future perspectives | |
| Simske et al. | Porous materials for bone engineering | |
| JP2547953B2 (en) | Artificial tooth root | |
| Lemons et al. | Biomaterials, biocompatibility, and peri-implant considerations | |
| KR0126285B1 (en) | Implants for partial replacement of tooth or bone tissue | |
| Datta et al. | Advanced materials in biological implants and surgical tools | |
| JPH0133180B2 (en) | ||
| KR100655170B1 (en) | Artificial joint device used in the thigh | |
| EP1508311A3 (en) | Method for fixing an implant, fixing member for the implant and implant composite | |
| DE19581649T1 (en) | Biological material and bone implant for bone restoration and exchange | |
| JPS63119749A (en) | Dental implant having multiple capillary structure | |
| De Santis et al. | Composite biomaterials for bone repair | |
| JP2543605B2 (en) | Transplant and method of making | |
| Steflik et al. | Transmission electron and high‐voltage electron microscopy of osteocyte cellular processes extending to the dental implant surface | |
| Higuchi et al. | Biocompatibility of Lotus‐type stainless steel and titanium in alveolar bone | |
| CA2318862A1 (en) | Process to pretreat copper surfaces | |
| CA2370686A1 (en) | Implant for recreating verterbrae and tubular bones | |
| Bagot d'Arc et al. | Micro macroporous biphasic ceramics and fibrin sealant as a moldable material for bone reconstruction in chronic otitis media surgery. A 15 years experience | |
| Corpe et al. | Correlative experimental animal and human clinical retrieval evaluations of hydroxyapatite (HA)-coated and non-coated implants in orthopaedics and dentistry | |
| JPH07155341A (en) | Artificial bone | |
| KR100775579B1 (en) | Dental implants containing zirconia | |
| Kitaoka et al. | Mechanical strength and bone bonding of a titanium fiber mesh block for intervertebral fusion | |
| Navarro et al. | Bioactive composites based on calcium phosphates for bone regeneration |