JP5172703B2 - 拡散硬化技術の応用 - Google Patents
拡散硬化技術の応用 Download PDFInfo
- Publication number
- JP5172703B2 JP5172703B2 JP2008551534A JP2008551534A JP5172703B2 JP 5172703 B2 JP5172703 B2 JP 5172703B2 JP 2008551534 A JP2008551534 A JP 2008551534A JP 2008551534 A JP2008551534 A JP 2008551534A JP 5172703 B2 JP5172703 B2 JP 5172703B2
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- JP
- Japan
- Prior art keywords
- diffusion
- plasma
- metal
- implant
- hardened
- 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.)
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- 239000010952 cobalt-chrome Substances 0.000 claims description 50
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- 229910052760 oxygen Inorganic materials 0.000 claims description 22
- 239000001301 oxygen Substances 0.000 claims description 22
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Classifications
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- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C23C8/36—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases using ionised gases, e.g. ionitriding
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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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- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
- A61F2310/00856—Coating or prosthesis-covering structure made of compounds based on metal nitrides
- A61F2310/00886—Coating made of chromium nitride
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
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- Cardiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Materials For Medical Uses (AREA)
- Prostheses (AREA)
Description
(ホウ素が拡散される)、並びに浸炭、窒化、酸化、及びホウ化のいずれの組み合わせを用いたコンビネーション層を使用することも本発明の範囲内であることに注意すべきである。本願明細書の記述の多くは、浸炭に焦点を当てるが、しかしながら、本発明は、炭素、窒素、酸素及びホウ素の格子間元素のいずれか、又はこの組み合わせのいずれかを用いた金属硬化を含むと理解されるべきである。従って、浸炭層に加え、酸化層、窒化層、ホウ化層、及びこれらの組み合わせを有してもよい。炭素、窒素、酸素及びホウ素は、いずれも本発明に使用でき、及び本発明に含まれるが、炭素が最も好ましく、ホウ素は最も好ましくない。従って、本発明のある実施形態において、ホウ化層を形成するためのホウ素の使用は除かれる。
熱電温度計によって測定された。シール可能な容器がしっかりと封じられた後、回転ポンプが残気(酸素)を除去するために使用され、この結果、容器内部の圧力が低下する。10Pa(0.1mbar)あるいはそれ以下まで減圧された場合、これら2つの電極間に約400ボルトから約900ボルトの電圧をかけることにより、インプラントと容器壁(アノード)の間にグロー放電が導入された。水素の加熱ガスが、同時に容器内に導入された。インプラントの温度が上昇するにつれて、容器内における水素ガスの圧力は、徐々に増加される。外部加熱又は補助加熱は使用せず、インプラントは、グロー放電プラズマのみによって加熱される。あるいは、外部加熱源が使用されてもよい。
4 ネック
6 大腿骨頭
8 内部表面
10 寛骨臼カップ
12 多孔質金属ベッド又はワイヤーメッシュコーティング
20 大腿骨部品
22 顆部
24 杭
26 底表面
30 脛骨部品
32 脛骨ベース
34 杭
36 脛骨プラットホーム
38 溝部
Claims (38)
- 第一接触表面を有する第一部分と、
第二接触表面を有する第二部分と、
を含むデバイスであって、
前記第一部分及び前記第二部分は、金属又は金属合金から形成され、
前記第一及び第二接触表面は互いに接触し、
前記第一及び第二接触表面の両方が、拡散硬化金属表面を含み、前記第一接触表面は、少なくとも一つの第一拡散硬化種を用いて拡散硬化され、及び、前記第二接触表面は、少なくとも一つの第二拡散硬化種を用いて拡散硬化され、及び、前記第一拡散硬化種は、前記第二拡散硬化種と異なり、
前記拡散硬化種は、炭素、窒素、酸素、ホウ素、及びこれらのいずれかの組み合わせから構成される群から選択されるデバイス。 - 前記デバイスは、医療用インプラントである請求項1に記載のデバイス。
- 前記第一部分を含む前記金属又は金属合金は、前記第二部分を含む前記金属又は金属合金とは異なる請求項1又は2に記載のデバイス。
- 前記金属又は金属合金は、CoCrである請求項1又は2に記載のデバイス。
- 前記接触表面の一方又は両方は、プラズマ硬化表面を含む請求項1又は2に記載のデバイス。
- 前記プラズマ硬化表面は、プラズマ浸炭表面、プラズマ窒化表面、プラズマ酸化表面、プラズマホウ化表面、及びこれらのいずれかの組み合わせから構成される群から選択される請求項5に記載のデバイス。
- 前記医療用インプラントは、股関節インプラントである請求項2に記載のデバイス。
- 前記第一部分及び第二部分の一方は、大腿骨頭を含む大腿骨部品であり、及び前記大腿骨頭は、接触表面を含み、
及び前記第一部分及び第二部分の他方は、寛骨臼部品であり、前記寛骨臼部品は、内部表面を含み、前記内部表面は、接触表面を含む請求項7に記載のデバイス。 - 前記接触表面の一方又は両方は、プラズマ硬化表面を含む請求項8に記載のデバイス。
- 前記プラズマ硬化表面は、プラズマ浸炭表面、プラズマ窒化表面、プラズマ酸化表面、プラズマホウ化表面、及びこれらのいずれかの組み合わせから構成される群から選択される請求項9に記載のデバイス。
- 前記医療用インプラントは、膝インプラントである請求項2に記載のデバイス。
- 前記第一部分及び第二部分の一方は、少なくとも一つの顆部を含む大腿骨部品であり、前記少なくとも一つの顆部は、接触表面を含み、
及び前記第一部分及び第二部分の他方は、脛骨部品であり、前記脛骨部品は、接触表面を含む請求項11に記載のデバイス。 - 前記接触表面の一方又は両方は、プラズマ硬化表面を含む請求項12に記載のデバイス。
- 前記プラズマ硬化表面は、プラズマ浸炭表面、プラズマ窒化表面、プラズマ酸化表面、プラズマホウ化表面、及びこれらのいずれかの組み合わせから構成される群から選択される請求項13に記載のデバイス。
- 前記医療用インプラントは、肩インプラント、肘インプラント、指インプラント、脊椎インプラント、及び顎関節インプラントから構成される群から選択される請求項2に記載のデバイス。
- 前記第一接触表面及び前記第二接触表面は、互いに連接する請求項1又は2に記載のデバイス。
- 前記第一及び第二接触表面の一方又は両方の上に堆積セラミックコーティングをさらに含む請求項1又は2に記載のデバイス。
- 前記堆積セラミックコーティングは、セラミック酸化物、セラミック窒化物、セラミック炭化物、セラミックホウ化物、及びこれらのいずれかの組み合わせから構成される群から選択される請求項17に記載のデバイス。
- 前記第一及び第二接触表面の一方又は両方の上にダイヤモンド又はダイヤモンド状炭素コーティングをさらに含む請求項1又は2に記載のデバイス。
- 前記第一及び第二接触表面の両方は、拡散硬化金属表面を含み、
及び前記第一接触表面は、拡散浸炭され及び拡散酸化され、
及び前記第二接触表面は、拡散浸炭された請求項1又は2に記載のデバイス。 - 前記第一接触表面に対する前記拡散硬化種は、炭素、窒素、ホウ素、及びこれらのいずれかの組み合わせから構成される群から選択され、及び
前記第二接触表面に対する前記拡散硬化種は、炭素、窒素、酸素、ホウ素、及びこれらのいずれかの組み合わせから構成される群から選択され、
前記接触表面の一方は、拡散硬化種として前記他方の接触表面には存在しない拡散硬化種を用いて拡散硬化されるという条件が与えられている請求項1又は2に記載のデバイス。 - 前記拡散硬化種は、炭素、窒素、酸素、及びこれらのいずれかの組み合わせから構成される群から選択される請求項1又は2に記載のデバイス。
- 前記デバイスは、自動車又は航空宇宙デバイスである請求項1に記載のデバイス。
- 金属又は金属合金からデバイスを形成する段階であって、前記デバイスは、第一接触表面を有する第一部分及び第二接触表面を有する第二部分を含み、前記第一及び第二接触表面は、互いに接触する、デバイスを形成する段階と、
拡散硬化によって、前記デバイス上に拡散硬化金属表面を形成する段階であって、前記拡散硬化段階は、炭素、窒素、酸素、ホウ素、及びこれらのいずれかの組み合わせから構成される群から選択された拡散硬化種を用いて実行され、前記拡散硬化段階は、
前記第一及び第二接触表面の両方の上に拡散硬化金属表面を形成するための拡散硬化段階であって、前記第一接触表面は、少なくとも一つの第一拡散硬化種を用いて拡散硬化され、及び前記第二接触表面は、少なくとも一つの第二拡散硬化種を用いて拡散硬化され、及び前記第一拡散硬化種は、前記第二拡散硬化種と異なる拡散硬化段階;
に従って実行される拡散硬化段階とを
含むデバイスの製造方法。 - 前記デバイスを形成する段階は、医療用インプラントを形成することを含む請求項24に記載のデバイスの製造方法。
- 金属又は金属合金から、前記第一部分及び第二部分を含む前記デバイスを形成する段階は、異なる金属又は金属合金から前記第一部分及び前記第二部分を形成することを含む請求項24又は25に記載のデバイスの製造方法。
- 前記金属又は金属合金は、CoCrである請求項24又は25に記載のデバイスの製造方法。
- 前記拡散硬化段階は、プラズマ硬化を含む請求項24又は25に記載のデバイスの製造方法。
- 前記医療用インプラントの形成段階は、股関節インプラントを形成することを含む請求項25に記載のデバイスの製造方法。
- 前記第一部分及び前記第二部分の一方は、寛骨臼部品であり、及び前記第一部分及び前記第二部分の他方は、大腿骨部品である請求項29に記載のデバイスの製造方法。
- 前記形成段階は、膝インプラントを形成することを含む請求項25に記載のデバイスの製造方法。
- 前記第一部分及び前記第二部分の一方は、脛骨部品であり、及び前記第一部分及び前記第二部分の他方は、大腿骨部品である請求項31に記載のデバイスの製造方法。
- 前記医療用インプラントの形成段階は、肩インプラント、肘インプラント、指インプラント、脊椎インプラント、及び顎関節インプラントから構成される群から選択された医療用インプラントを形成することを含む請求項25に記載のデバイスの製造方法。
- 前記第一及び第二接触表面の一方又は両方の上にセラミックコーティングを堆積する段階をさらに含む請求項24又は25に記載のデバイスの製造方法。
- 前記第一及び第二接触表面の一方又は両方の上にダイヤモンド又はダイヤモンド状炭素コーティングを堆積する段階をさらに含む請求項24又は25に記載のデバイスの製造方法。
- 前記第一及び第二接触表面の両方の上に拡散硬化金属表面を形成するための前記拡散硬化段階は、前記第一接触表面上に拡散浸炭及び拡散酸化表面を形成すること、及び前記第二接触表面上に拡散浸炭表面を形成することを含む請求項24又は25に記載のデバイスの製造方法。
- 前記第一接触表面のための前記拡散硬化段階は、炭素、窒素、ホウ素、及びこれらのいずれかの組み合わせから構成される群から選択された拡散硬化種を用いて実行され、及び
前記第二接触表面に対する前記拡散硬化段階は、炭素、窒素、酸素、ホウ素、及びこれらのいずれかの組み合わせから構成される群から選択された拡散硬化種を用いて実行され、
前記接触表面の一方は、拡散硬化種として前記他方の接触表面には存在しない拡散硬化種を用いて拡散硬化されるという条件が与えられている、
請求項24又は25に記載のデバイスの製造方法。 - 拡散硬化金属表面を形成するための前記拡散硬化段階は、炭素、窒素、酸素、及びこれらのいずれかの組み合わせから構成される群から選択された拡散硬化種を用いて実行される請求項24又は25に記載のデバイスの製造方法。
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PCT/US2007/060719 WO2007084961A2 (en) | 2006-01-18 | 2007-01-18 | Applications of diffusion hardening techniques |
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AU2015203048B2 (en) | 2016-03-03 |
CN101405424A (zh) | 2009-04-08 |
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US20080281429A1 (en) | 2008-11-13 |
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CN101405424B (zh) | 2014-11-26 |
US20200078179A1 (en) | 2020-03-12 |
AU2012238259A1 (en) | 2012-11-01 |
AU2015203048A1 (en) | 2015-06-25 |
CA2636103A1 (en) | 2007-07-26 |
EP1994193B1 (en) | 2021-06-09 |
WO2007084961A2 (en) | 2007-07-26 |
JP2009523580A (ja) | 2009-06-25 |
EP1994193A2 (en) | 2008-11-26 |
AU2007205890A1 (en) | 2007-07-26 |
KR101415176B1 (ko) | 2014-07-04 |
KR20080093122A (ko) | 2008-10-20 |
EP1994193A4 (en) | 2011-08-24 |
US20180042727A1 (en) | 2018-02-15 |
US10512544B2 (en) | 2019-12-24 |
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