JP2006223847A - 被覆医学装置、及び該装置を作製する方法と該装置を用いる方法 - Google Patents
被覆医学装置、及び該装置を作製する方法と該装置を用いる方法 Download PDFInfo
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- JP2006223847A JP2006223847A JP2006002910A JP2006002910A JP2006223847A JP 2006223847 A JP2006223847 A JP 2006223847A JP 2006002910 A JP2006002910 A JP 2006002910A JP 2006002910 A JP2006002910 A JP 2006002910A JP 2006223847 A JP2006223847 A JP 2006223847A
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- medical device
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- alloy
- joint
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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
- A61L27/28—Materials for coating prostheses
- A61L27/30—Inorganic materials
- A61L27/306—Other specific inorganic materials not covered by A61L27/303 - A61L27/32
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- 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
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- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
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Abstract
【解決手段】表面を有する構造部材を備え、その表面の少なくとも一部は、少なくとも約25μmの厚みのナノ組織材料によって被覆され、このナノ組織材料は、セラミック、セラミック複合材料、セラミック/金属複合材料、又はこれらの少なくとも1つを含む組合せを含んでいる。この移植片は、理由の1つとして、改良された耐磨耗性と耐剥離性によって、寿命が延長され、関節式継手又は柔軟性ヒンジ継手を部分的又は完全に置換するのに有益である。
【選択図】図3
Description
本出願は、2005年1月7日に出願された米国仮特許出願第60/642,449号の利得を主張し、この仮特許出願は、その全体を参照することによって、ここに含まれるものとする。
米国政府は、米国科学財団助成第DMI−0319325号に従って、本発明に一部の権利を有する。
本開示は、一般的に、被膜に関し、さらに詳細には、医学装置の表面に堆積される被膜に関する。
クロミア供給材料の組成物は、5重量%のSiO2と3重量%のTiO2を含み、残部がCr2O3である。原料である粉末材料の平均粒子径は、Cr2O3とSiO2が約50nmで、TiO2が約30nmである。最初に、1:2の粉末と水の比率で供給材料の組成物を含むスラリーを準備した。この供給材料の組成物を、入口温度が446°Fで、出口温度が105℃で、回転速度が25,000rpmの16フィート(480センチ)長さの工業用噴霧乾燥機を用いて、噴霧乾燥した。噴霧乾燥した供給材料の組成物を、空気中で1000℃未満の温度で加熱することによって、部分的に焼結し、これに続いて、水素中において約1000℃〜1800℃の温度で加熱し、ナノ粒子を溶射に適したミクロンメートルサイズの粒子に凝集させた。約20〜50nmの個々の粒子含む供給材料を、約5〜100μmの溶射可能な凝集体に凝集させた。
実施例1によって準備したクロミアによって被覆されたTi6Al4Vの大腿骨頭を、市販のUHMWPE(超高分子量ポリエチレン)とCo−Cr−Mo合金の組からなる膝関節及びポリマーとセラミック被覆された金属の組からなる膝関節と、比較した。表1に示されるように、これらの市販の製品を上回る著しい改良が得られた。
12 寛骨臼ソケット
14 大腿骨頭
16 凹状開口
18 被膜
20 膝関節移植片
22 大腿顆
24 頸骨
26 被膜
28 被膜
Claims (52)
- 表面を有する構造部材を備える医学装置において、前記表面の少なくとも一部は、少なくとも約25ミクロンメートルの厚みのナノ組織材料によって被覆され、前記ナノ組織材料は、セラミック、セラミック複合材料、セラミック/金属複合材料、又はこれらの少なくとも1つを含む組合せを備えていることを特徴とする医学装置。
- 人工移植片であることを特徴とする請求項1に記載の医学装置。
- 前記人工移植片は、関節式継手又は柔軟性ヒンジ継手の少なくとも一部を備えていることを特徴とする請求項2に記載の医学装置。
- 前記関節式継手は、膝、腰、肘、足首、脊椎、肩、又は手首の関節の部分的置換又は完全置換に用いられていることを特徴とする請求項3に記載の医学装置。
- 前記柔軟性ヒンジ継手は、シラスティク関節又はMP関節の部分的置換又は完全置換に用いられていることを特徴とする請求項3に記載の医学装置。
- 前記構造部材は、合金、セラミック、又はポリマーから形成されていることを特徴とする請求項1に記載の医学装置。
- 前記合金構造部材は、ステンレス鋼合金、チタン合金、ジルコニウム合金、コバルト−クロム−モリブデン合金、又はこれらの合金の少なくとも1つを含む組合せであることを特徴とする請求項6に記載の医学装置。
- 前記セラミック構造部材は、アルミナ、ジルコニア、チタニア、クロミア、又はこれらのセラミックの少なくとも1つを含む組合せであることを特徴とする請求項6に記載の医学装置。
- 前記ポリマー構造部材は、超高分子量ポリエチレンであることを特徴とする請求項6に記載の医学装置。
- 前記ポリマー構造部材は、繊維、微粒子、又はこれらの少なくとも1つを含む組合せによって補強されていることを特徴とする請求項6に記載の医学装置。
- 前記表面は、負荷支持表面であることを特徴とする請求項1に記載の医学装置。
- 前記合金構造部材の前記表面と前記ナノ組織材料との間に配置される酸化された層をさらに備えていることを特徴とする請求項6に記載の医学装置。
- 前記ナノ組織セラミック材料は、硬質相金属酸化物、金属炭化物、ダイヤモンド、金属窒化物、金属硼化物、又はこれらの少なくとも1つを含む組合せであることを特徴とする請求項1に記載の医学装置。
- 前記ナノ組織セラミック複合材料は、前記セラミック複合材料の全体積に基づいて、少なくとも51体積%の硬質相セラミック材料と、結合剤相とを含み、前記結合剤相は、SiO2、CeO2、Y2O3、TiO2、又はこれらの少なくとも1つを含む組合せを含んでいることを特徴とする請求項1に記載の医学装置。
- 前記ナノ組織セラミック/金属複合材料は、WC/Co、TiC/Ni、TiC/Fe、Ni(Cr)/Cr3C2、WC/CoCr、又はこれらの少なくとも1つを含む組合せを含んでいることを特徴とする請求項1に記載の医学装置。
- 前記ナノ組織セラミック/金属複合材料は、TiC、VC、TaC、HfC、Cr、Ni、B、BN、又は前述の少なくとも1つの組合せをさらに含んでいることを特徴とする請求項15に記載の医学装置。
- 前記ナノ組織材料は、約500ナノメートル以下の平均最長粒子径を有していることを特徴とする請求項1に記載の医学装置。
- 前記ナノ組織材料は、約100ナノメートル以下の平均最長粒子径を有していることを特徴とする請求項1に記載の医学装置。
- 前記ナノ組織材料の厚みは、約3ミリメートル以下であることを特徴とする請求項1に記載の医学装置。
- 第1表面を有する第1構造部材と第2表面を有する第2構造部材を備える医学装置において、前記第1及び第2表面の片方又は両方の少なくとも一部は、少なくとも約25ミクロンメートルの厚みのナノ組織材料によって被覆されていることを特徴とする医学装置。
- 前記第1及び第2表面の片方又は両方は、負荷支持表面であることを特徴とする請求項20に記載の医学装置。
- 関節式継手又は柔軟性ヒンジ継手であることを特徴とする請求項20に記載の医学装置。
- 前記関節式継手は、膝、腰、肘、足首、脊椎、肩、又は手首の関節の部分的置換又は完全置換に用いられていることを特徴とする請求項22に記載の医学装置。
- 前記柔軟性ヒンジ継手は、シラスティク関節又はMP関節の部分的置換又は完全置換に用いられていることを特徴とする請求項22に記載の医学装置。
- 前記第1及び第2構造部材の片方又は両方は、合金、セラミック、ポリマー、又は軟骨から形成されていることを特徴とする請求項20に記載の医学装置。
- 前記合金は、ステンレス鋼合金、チタン合金、ジルコニウム合金、コバルト−クロム−モリブデン合金、又はこれらの合金の少なくとも1つを含む組合せであることを特徴とする請求項25に記載の医学装置。
- 前記セラミックは、アルミナ、ジルコニア、チタニア、クロミア、又はこれらのセラミックの少なくとも1つを含む組合せであることを特徴とする請求項25に記載の医学装置。
- 前記ポリマーは、超高分子量ポリエチレンであることを特徴とする請求項25に記載の医学装置。
- 前記ポリマーは、繊維、微粒子、又はこれらの少なくとも1つを含む組合せによって補強されていることを特徴とする請求項25に記載の医学装置。
- 前記第1及び第2表面は、旋回自在に係合可能であることを特徴とする請求項20に記載の医学装置。
- 前記ナノ組織材料は、セラミック、セラミック複合材料、セラミック/金属複合材料、又はこれらの少なくとも1つを含む組合せであることを特徴とする請求項20に記載の医学装置。
- 前記セラミックは、硬質相金属酸化物、金属炭化物、ダイヤモンド、金属窒化物、金属硼化物、又はこれらの少なくとも1つを含む組合せであることを特徴とする請求項31に記載の医学装置。
- 前記セラミック複合材料は、前記セラミック複合材料の全体積に基づいて、少なくとも51体積%の硬質相セラミック材料と、結合剤相とを含み、前記結合剤相は、SiO2、CeO2、Y2O3、TiO2、又はこれらの少なくとも1つを含む組合せを含んでいることを特徴とする請求項31に記載の医学装置。
- 前記セラミック/金属複合材料は、WC/Co、TiC/Ni、TiC/Fe、Ni(Cr)/Cr3C2、WC/CoCr、又はこれらの少なくとも1つを含む組合せを含んでいることを特徴とする請求項31に記載の医学装置。
- 前記ナノ組織材料は、約500ナノメートル以下の平均最長粒子径を有していることを特徴とする請求項20に記載の医学装置。
- 前記ナノ組織材料は、約100ナノメートル以下の平均最長粒子径を有していることを特徴とする請求項20に記載の医学装置。
- 前記ナノ組織材料の厚みは、約3ミリメートル以下であることを特徴とする請求項20に記載の医学装置。
- 表面を有する構造部材を備える医学装置を外科的に移植する段階を含む方法において、前記表面の少なくとも一部は、少なくとも約25ミクロンメートルの厚みのナノ組織材料によって被覆され、前記ナノ組織材料は、セラミック、セラミック複合材料、セラミック/金属複合材料、又はこれらの少なくとも1つを含むことを特徴とする方法。
- 前記医学装置は、関節式継手又は柔軟性ヒンジ継手の少なくとも一部を備えていることを特徴とする請求項38に記載の方法。
- 前記関節式継手は、膝、腰、肘、足首、脊椎、肩、又は手首の関節の部分的置換又は完全置換に用いられることを特徴とする請求項39に記載の方法。
- 前記柔軟性ヒンジ継手は、シラスティク関節又はMP関節の部分的置換又は完全置換に用いられることを特徴とする請求項39に記載の方法。
- 医学装置を作製する方法において、前記医学装置の少なくとも1つの表面を少なくとも約25ミクロンメートルの厚みを有するナノ組織材料の膜によって被覆する段階を含むことを特徴とする方法。
- 前記少なくとも1つの表面は、ステンレス鋼合金、チタン合金、ジルコニウム合金、コバルト−クロム−モリブデン合金、又はこれらの合金の少なくとも1つを含む組合せを含む合金から形成されることを特徴とする請求項42に記載の方法。
- どのような腐食又は金属イオンの血流内への離脱をも減少させるのに効果的な腐食バリアをもたらすために、被覆の前に、前記合金表面の層を酸化する段階をさらに含む請求項43に記載の方法。
- 酸化は、加熱、陽極酸化、不動態化、又はこれらの少なくとも1つを含む組合せを含むことを特徴とする請求項44に記載の方法。
- 被覆は、溶射、化学蒸着、物理蒸着、スパッタリング、イオンメッキ、陰極アーク蒸着、原子層エピタキシー、分子ビームエピタキシー、粉末焼結、電気泳動、電気メッキ、射出成形、又はこれらの少なくとも1つを含む組合せを含むことを特徴とする請求項42に記載の方法。
- 前記膜を焼鈍する段階をさらに含むことを特徴とする請求項42に記載の方法。
- 前記膜を研削する段階をさらに含むことを特徴とする請求項42に記載の方法。
- 前記膜を研摩する段階をさらに含むことを特徴とする請求項42に記載の方法。
- 前記ナノ組織材料は、約500ナノメートル以下の平均最長粒子径を有することを特徴とする請求項42に記載の方法。
- 前記ナノ組織材料は、セラミック、セラミック複合材料、セラミック/金属複合材料、又はこれらの少なくとも1つを含む組合せであることを特徴とする請求項42に記載の方法。
- 前記膜は、約3ミリメートル以下の厚みを有することを特徴とする請求項42に記載の方法。
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Also Published As
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AU2006200043A1 (en) | 2006-07-27 |
CA2532388A1 (en) | 2006-07-07 |
EP1679088A3 (en) | 2007-12-05 |
JP2011101806A (ja) | 2011-05-26 |
EP1679088A2 (en) | 2006-07-12 |
AU2006200043B2 (en) | 2011-11-17 |
US20060184251A1 (en) | 2006-08-17 |
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