JP2002541984A - 骨組織および/または結合組織の内成長および成長をもたらすためのボディ並びにこのようなボディを作る方法 - Google Patents
骨組織および/または結合組織の内成長および成長をもたらすためのボディ並びにこのようなボディを作る方法Info
- Publication number
- JP2002541984A JP2002541984A JP2000613493A JP2000613493A JP2002541984A JP 2002541984 A JP2002541984 A JP 2002541984A JP 2000613493 A JP2000613493 A JP 2000613493A JP 2000613493 A JP2000613493 A JP 2000613493A JP 2002541984 A JP2002541984 A JP 2002541984A
- Authority
- JP
- Japan
- Prior art keywords
- bone
- growth
- connective tissue
- bodies
- ingrowth
- 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.)
- Granted
Links
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- 239000008187 granular material Substances 0.000 claims abstract description 22
- 239000000560 biocompatible material Substances 0.000 claims abstract description 10
- 239000007943 implant Substances 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims abstract 2
- 229910001092 metal group alloy Inorganic materials 0.000 claims abstract 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 17
- 239000010936 titanium Substances 0.000 claims description 13
- 229910052719 titanium Inorganic materials 0.000 claims description 13
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- 235000014653 Carica parviflora Nutrition 0.000 claims description 3
- 239000005445 natural material Substances 0.000 claims description 3
- KIUKXJAPPMFGSW-DNGZLQJQSA-N (2S,3S,4S,5R,6R)-6-[(2S,3R,4R,5S,6R)-3-Acetamido-2-[(2S,3S,4R,5R,6R)-6-[(2R,3R,4R,5S,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-2-carboxy-4,5-dihydroxyoxan-3-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid Chemical compound CC(=O)N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@H](O[C@H]2[C@@H]([C@@H](O[C@H]3[C@@H]([C@@H](O)[C@H](O)[C@H](O3)C(O)=O)O)[C@H](O)[C@@H](CO)O2)NC(C)=O)[C@@H](C(O)=O)O1 KIUKXJAPPMFGSW-DNGZLQJQSA-N 0.000 claims description 2
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- 102000008186 Collagen Human genes 0.000 claims description 2
- 108010035532 Collagen Proteins 0.000 claims description 2
- 102000009123 Fibrin Human genes 0.000 claims description 2
- 108010073385 Fibrin Proteins 0.000 claims description 2
- BWGVNKXGVNDBDI-UHFFFAOYSA-N Fibrin monomer Chemical compound CNC(=O)CNC(=O)CN BWGVNKXGVNDBDI-UHFFFAOYSA-N 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims description 2
- 229920001436 collagen Polymers 0.000 claims description 2
- 229950003499 fibrin Drugs 0.000 claims description 2
- 229920002674 hyaluronan Polymers 0.000 claims description 2
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- CGMRCMMOCQYHAD-UHFFFAOYSA-J dicalcium hydroxide phosphate Chemical compound [OH-].[Ca++].[Ca++].[O-]P([O-])([O-])=O CGMRCMMOCQYHAD-UHFFFAOYSA-J 0.000 description 3
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
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- ZRKFYGHZFMAOKI-QMGMOQQFSA-N tgfbeta Chemical compound C([C@H](NC(=O)[C@H](C(C)C)NC(=O)CNC(=O)[C@H](CCC(O)=O)NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@H](CC(N)=O)NC(=O)[C@H](CC(C)C)NC(=O)[C@H]([C@@H](C)O)NC(=O)[C@H](CCC(O)=O)NC(=O)[C@H]([C@@H](C)O)NC(=O)[C@H](CC(C)C)NC(=O)CNC(=O)[C@H](C)NC(=O)[C@H](CO)NC(=O)[C@H](CCC(N)=O)NC(=O)[C@@H](NC(=O)[C@H](C)NC(=O)[C@H](C)NC(=O)[C@@H](NC(=O)[C@H](CC(C)C)NC(=O)[C@@H](N)CCSC)C(C)C)[C@@H](C)CC)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](C)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](C)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](C)C(=O)N[C@@H](CC(C)C)C(=O)N1[C@@H](CCC1)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CC(C)C)C(O)=O)C1=CC=C(O)C=C1 ZRKFYGHZFMAOKI-QMGMOQQFSA-N 0.000 description 2
- 230000008467 tissue growth Effects 0.000 description 2
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- 210000002449 bone cell Anatomy 0.000 description 1
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- 230000024279 bone resorption Effects 0.000 description 1
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- 239000011248 coating agent Substances 0.000 description 1
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- 239000002131 composite material Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
- 238000002594 fluoroscopy Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000028709 inflammatory response Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000011164 ossification Effects 0.000 description 1
- 230000002138 osteoinductive effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002062 proliferating effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000017423 tissue regeneration Effects 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Classifications
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- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
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- A61F2310/00377—Fibrin
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- 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
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- Y10T428/239—Complete cover or casing
-
- 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
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- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
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- 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
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Abstract
Description
ムのような細長い人工器官を固定するための手段について開示しており、1本の
人工器官がその空洞の境界部へ隙間をあけて入れられる。本質的に、その隙間全
体が、ゆったりしているがいっぱいに詰め込んだ生体適合性物質の粒体で満たさ
れ、その粒体は相互につながれている。粒体質の例としてチタンが挙げられ、そ
の粒体は不規則で、本質的に非弾性であり、好ましくは多孔質であると述べられ
ており、後者の性質が骨性壁から成長した骨組織の増殖部分を結合していると言
われている。多孔性は粒体物質の溶融物にガスを吹き込んで得られた。
有するチタンの支持体と、粉砕された生体骨組織およびチタン粉末からなる混合
物の付着層とから構成される、インプラントについて開示している。その混合物
には栄養素が補充されるが、これは粉砕された骨組織を成長させて、粉砕された
生体骨組織およびチタン粉末を互いにおよび支持体と結びつける組織を形成させ
る。
適合性構造材料について開示しており、その材料は骨組織空洞で骨接続性および
骨誘導性マトリックスを形成するように適用される。その材料物質はチタンでも
よく、材料は自然骨の内成長のために微孔質であることが有利と言われている。
キシルアパタイト、バイオセラミックス、バイオガラスを挙げている。 上記文献では、生体適合性物質の多孔性が骨組織の結合にとり好ましいものを
生じさせていると指摘している。
する実際上の決定的要因であることが意外にもわかった。 ‐生体適合性物質の粒体のようなボディが連続的な多孔質であり、 ‐ボディの多孔性が最低限界値を有しているならば、 表面多孔性が確かに骨組織を結合させながら、骨組織の有意に高い成長速度およ
び多量の骨、ひいては生体適合性物質で骨組織の有意に改善されたアンカーリン
グ(anchoring)および強度が得られることがわかった。 本発明の追加利点は多孔質顆粒の強度により得られ、その強度は骨組織を内成
長させた方が骨を内成長させない場合よりも大きい。骨の内成長のおかげで、強
度が主に骨組織により得られるようになり、これはバイオメカニカルな観点から
は好ましい。
組織を成長させるような多孔性を意味している。本発明によると、このような多
孔性は導管、通路で相互につながれた空洞をボディにもたらすため、そのボディ
の外表面の一部への骨組織の成長は、ボディ内を通って、ボディの外表面の他部
分から外部へと成長を続けさせる。空洞とは、任意形状の切れ込み、くぼみ、ポ
ケットを意味し、これらの空洞をつなげる導管、通路は任意形態を有して、空洞
の一部を構成することができる。このような構造の例は、サンゴまたは鍾乳洞で
自然にみられる。
び導管の開口部をここでは意味する。栄養素の供給が抑制されて、含有された材
料で骨の正常な構造に発育させることが妨げられることから、それより小さな開
口部寸法では骨組織の成長を制限または抑制してしまう。事実、ボディの多孔性
に上限はない。上限はむしろボディの強度により決められる。 本発明によると、互いに隣同士に位置して開いた表面孔を有するボディで表面
孔から空洞を形成させることができ、その結果あるボディの表面孔が他のボディ
の表面孔と一緒になって空洞または導管/通路を形成する。
のような物質が自然骨の修復、強化および置換に用いられたとき、本発明の目的
にとり最適ではないこともわかった。このような物質は、必然的に生じる負荷に
曝されたとき、例えば粒体のような生体適合性ボディが存在する人体または人体
の一部が例えば四肢を動かしたときに負荷に曝されたとき、容易に分解してしま
う。生体適合性物質のボディの分解部分は、骨の形成を妨げて骨吸収を多々もた
らすという、好ましくない炎症反応を生じる。
シルアパタイト、バイオセラミックスなどのような天然物質を多孔質ボディの物
質中の成分として含有させてもよく、プラスチックのような他成分も可塑性を保
証する。本発明によるボディ物質は事実上可塑性または非本質的に弾性にすべき
である。過度な弾性は骨組織に圧力をかけて、後でそれを壊してしまう。
多孔性はチタンの溶融物にガスを吹き込んで有利に得られる。こうして、SE‐
B‐462,638で記載されているように、チタン粒体を生産することができ
る。 しかしながら、上記のような多孔性に関する要件は、金属の溶融物にガスを吹
き込むことだけで、自動的に満たされるわけではない。本発明によると、こうし
て得られたボディ/粒体の多孔性をチェックして、それが要件を満たすかどうか
を確認する。チェックは、例えば、適切な波長での蛍光透視法、およびTV受像
機、および上記要件を満たさない粒体の自動分離(例えば、コンベヤーベルトか
ら)により行うことができる。
わりにまたはそれを犠牲にして望まれるならば、限界値は>約50〜10μmと
なる。 本発明による粒体のような多孔質ボディは、インビボで骨組織の成長後に代替
物として骨空洞、失われた足(リウマチ、骨粗鬆症)を満たすため、またはSE
‐B‐462,638に従い人工器官を固定するために、人体のような生体ボデ
ィに埋め込むことができる。本発明による多孔質ボディは、インビトロで骨組織
の前培養向けのベースとして機能することもあり、または後で生体組織へ埋め込
むためにインビトロで特に成長因子を含有した栄養溶液で満たしてもよい。骨空
洞を満たす場合には、ボディは粒状および不規則的で、<10mmの大きさを有
していることが好ましく、こうすると複数/多数の粒体で骨空洞を最適に満たせ
る。
たしてもよい。このような天然マトリックスの例は、コラーゲン、フィブリン、
デンプンおよびヒアルロン酸のゲルである。本発明によると、このマトリックス
は分解して内成長骨組織に置き換わる。骨組織の内成長は、成長刺激物質、特に
TGFβ(トランスフォーミング成長因子β)またはBGF(骨成長因子)のよ
うな成長因子が分解性物質へ加えられたならば、更に刺激される。本発明による
ボディの孔は、例えば吸引により、ゲル物質と共に動かしてから、その物質をゲ
ル化してもよい。
キシブルなまたは堅いケーシングに封入してもよい。例えば、本発明による粒体
は、スリーブ(例えばUS‐A‐5,015,247のスリーブ参照)と一緒に
して、背骨インプラントを形成するために、堅いスリーブに封入してもよい。ケ
ーシングに封入する他の可能性はSE9803078‐6で開示されている。ケ
ーシングは、生物細胞物質の内成長および成長を、その粒体へおよびそこからそ
のケーシングへと行わせるための開口部を有している。本発明による粒体は、分
解した生物組織と混合してもよい。
明による多孔質構造を示し、図2はチタン粒体の外表面の本発明による別な多孔
質構造を示している。図3は本発明による多孔性を有したチタン粒体の薄片の画
像である。すべての画像は、SE‐B‐462,638で更に詳細に記載された
振動技術を用いて埋め込んだ後に人体の大腿骨から除去された、不規則な粒体ま
たは顆粒から作成されている。
構造は、チタンの溶融物にガスを吹き込み、上記の品質チェックを行うことによ
り得られた。双方の画像は骨組織の前段階として生体物質の淡灰色皮膜を示して
おり、それは粒体の外表面を覆って、チタン粒体の孔における空洞および隙間中
へ浸透していた。図1は構造中の空洞/隙間を橋かけする骨細胞増殖も示してい
る。 図3は、本発明による粒体と交わってそこに浸透した骨組織を示している。
よび0〜3%結合組織の組成を有しており、その粒体外でそれらの近くに存在す
る骨の組成と本質的に一致することを証明した。
像である。
Claims (10)
- 【請求項1】 骨組織および/または結合組織の内成長および成長をもたらすための、粒体の
ようなボディであり、そのボディは可塑性または非本質的に弾性の生体適合性物
質、好ましくは金属または金属合金から作製されており、 それが多孔質であって、下記の多孔質特徴を有している: ‐多孔性が連続的であり、 ‐それらをつなげる空洞/切れ込み/ポケットおよび導管/通路の開口部が、
骨組織用で>約50μmおよび結合組織用で>約10μmの幅を有している、 ことを特徴とするボディ。 - 【請求項2】 チタンから作製されている、請求項1に記載のボディ。
- 【請求項3】 空洞が、分解性物質、例えばコラーゲン、フィブリン、デンプン、ヒアルロン
酸のゲルのような天然物質のマトリックスで満たされている、請求項1または2
に記載のボディ。 - 【請求項4】 分解性物質が成長刺激物質を含有している、請求項1〜3のいずれか一項に記
載のボディ。 - 【請求項5】 サンゴ構造を有している、請求項1〜4のいずれか一項に記載のボディ。
- 【請求項6】 <10mmである、請求項1〜5のいずれか一項に記載のボディ。
- 【請求項7】 類似ボディの凝集物として個別体からなる、請求項1〜6のいずれか一項に記
載のボディ。 - 【請求項8】 チタンのような金属からなるボディを作り、金属の溶融物にガスを吹き込み、
それらをつなげる<50μmの幅を有した空洞/切れ込み/ポケットおよび導管
/通路の開口部をもつボディを分離することからなる、請求項1〜7のいずれか
一項に記載されたボディの製造方法。 - 【請求項9】 インプラントを生産するための、開口部/孔をもうけたケーシングにおける、
請求項7に記載されたボディの使用。 - 【請求項10】 ケーシングが、背骨インプラントを生産するための堅い円筒形スリーブである
、請求項9に記載の使用。
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PCT/SE2000/000802 WO2000064504A2 (en) | 1999-04-28 | 2000-04-28 | Body for providing ingrowth and growth of bone tissue and/or connective tissue and method of making such a body |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006230817A (ja) * | 2005-02-25 | 2006-09-07 | Tokyo Medical & Dental Univ | 生体組織補填材、生体組織補填体およびその製造方法 |
JP2008539938A (ja) * | 2005-05-11 | 2008-11-20 | フォンデル、ファイナンス、ベスローテン、フェンノートシャップ | 成形製品およびそれを製造するための材料ならびに方法 |
JP2010519294A (ja) * | 2007-02-22 | 2010-06-03 | ティグラン テクノロジーズ アーベー(パブル) | マイクロ構造の粒子による炎症症状および/または細菌性の症状の治療 |
US9138301B2 (en) | 2005-12-05 | 2015-09-22 | Mitsubishi Materials Corporation | Medical device and surface modification method for medical device |
Families Citing this family (47)
Publication number | Priority date | Publication date | Assignee | Title |
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