JP5885778B2 - 多孔性金属インプラントの形成方法 - Google Patents
多孔性金属インプラントの形成方法 Download PDFInfo
- Publication number
- JP5885778B2 JP5885778B2 JP2014121807A JP2014121807A JP5885778B2 JP 5885778 B2 JP5885778 B2 JP 5885778B2 JP 2014121807 A JP2014121807 A JP 2014121807A JP 2014121807 A JP2014121807 A JP 2014121807A JP 5885778 B2 JP5885778 B2 JP 5885778B2
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- JP
- Japan
- Prior art keywords
- mixture
- implant
- spacing agent
- metal
- liquid binder
- 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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- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
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- A61L2300/64—Animal cells
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Description
本出願は、表題「Method and Apparatus for Use of Porous Implants」の米国特許出願第11/357868号明細書(代理人整理番号5490−000410/CPB)に関連しており、その開示は参照によって組込まれている。「Method and Apparatus for Use of Porous Implants」は本願と同時出願され、インディアナ州ワルシャワのBiomet Manufacturing社の同一出願人による。
本発明は多孔性金属インプラントおよび製造方法に関する。
多孔性金属インプラントは、囲繞骨組織および軟組織のインプラント内への内方成長を促進するのに使用される。金属の多孔性、完全性および連続性が充分である場合、多孔性インプラントは、インプラント場所へ所望の耐荷重強度を与える組織内方成長の足場として機能する。
本発明は、生体適合性金属粉末、離隔剤および非極性液体バインダの混合物を調製する工程を含む多孔性金属インプラントの調製方法であって、離隔剤が非極性液体バインダに実質的に不溶性である方法を提供する。混合物が成形され、非極性液体バインダおよび離隔剤が混合物から除去されて、金属インプラント内に複数の孔を形成する。
以下の記載は単に実際の例であり、本発明、その用途または使用を限定することを意図したものでは決してない。種々の実施形態は、人工ひざまたは人工股関節装置と使用するための多孔性金属インプラントと関連して記載されるが、本発明のインプラントおよび方法は、あらゆる適切な基質または形状であり、あらゆる適切な手順で使用することができ、例示されたものだけではないことが理解される。
(1)多孔性金属インプラントの調製方法であって、
a. i.生体適合性金属粉末と、
ii.離隔剤と、
iii.非極性液体バインダと、
を有する混合物を調整する工程であって、離隔剤が非極性液体バインダに実質的に不溶性である工程と、
b.混合物を成形する工程と、
c.離隔剤を除去して金属インプラント内に複数の孔を形成する工程とを含むことを特徴とする方法。
a.生体適合性金属粉末と、
b.離隔剤と、
c.非極性液体バインダとを含み、離隔剤が実質的に非極性液体バインダに不溶性であることを特徴とする成形可能な混合物。
a.混合物の少なくとも一部の周りに固定要素を配置する工程と、
b.混合物を固定要素内に置きながら混合物を型で成形する工程と、
c.離隔剤および非極性液体バインダを形成された形状から昇華させる工程と、
d.固定要素を除去する工程と、
e.形成された形状を焼結する工程とを含むことを特徴とする方法。
a. i.生体適合性金属粉末と、
ii.離隔剤と、
iii.非極性液体バインダとを有する混合物を調製する工程であって、離隔剤が実質的に非極性液体バインダに不溶性である工程と、
b.混合物を成形する工程と、
c.混合物を1つの加熱ユニット内で熱循環させて離隔剤および非極性液体バインダを除去し、かつ金属粉末を焼結して金属インプラント内に複数の孔を形成する工程とを含むことを特徴とする方法。
Claims (19)
- 多孔性金属インプラントの調製方法であって、
a. i.生体適合性金属粉末と、
ii.離隔剤と、
iii.d−リモネンを含む非極性液体バインダと、
を有する混合物を調製する工程であって、離隔剤が非極性液体バインダに実質的に不溶性である工程と、
b.混合物を成形する工程と、
c.非極性液体バインダおよび離隔剤を除去して金属インプラント内に複数の孔を形成する、50℃〜250℃の温度での加熱除去工程とを含むことを特徴とする方法。 - 生体適合性金属粉末が、チタン、チタン合金、コバルト、コバルト合金、クロム、クロム合金、タンタル、タンタル合金およびステンレス鋼から成る群から選択されることを特徴とする請求項1記載の方法。
- 金属粉末が、5マイクロメータ〜1500マイクロメータの粒子サイズを有することを特徴とする請求項1または2記載の方法。
- 離隔剤が、尿素、炭酸アンモニウム、重炭酸アンモニウム、カルバミン酸アンモニウム、リン酸水素カルシウム、ナフタレンおよびそれらの混合物を含むことを特徴とする請求項1〜3のいずれか1項に記載の方法。
- 離隔剤が、1マイクロメータ〜1500マイクロメータの粒子サイズを有することを特徴とする請求項1〜4のいずれか1項に記載の方法。
- 非極性液体バインダと離隔剤とが懸濁液を形成することを特徴とする請求項1〜5のいずれか1項に記載の方法。
- 混合物が均質な混合物であることを特徴とする請求項1〜6のいずれか1項に記載の方法。
- 混合物の成形が、一軸プレス、および静水圧プレスから成る群から選択される加圧技術から選択されることを特徴とする請求項1〜7のいずれか1項に記載の方法。
- 加圧技術が150メガパスカルを超える圧力で行われることを特徴とする請求項8記載の方法。
- 離隔剤の除去後、真空圧下で金属を焼結する工程をさらに含むことを特徴とする請求項1〜9のいずれか1項に記載の方法。
- 金属粉末が少なくとも2つの異なるサイズを含むことを特徴とする請求項1〜10のいずれか1項に記載の方法。
- 金属インプラントに多孔率の勾配を与える工程をさらに含むことを特徴とする請求項1〜6および9〜11のいずれか1項に記載の方法。
- 多孔率の勾配は、1%〜80%の範囲内であることを特徴とする請求項12記載の方法。
- 多孔性金属インプラントの調製方法であって、
a. i.生体適合性金属粉末と、
ii.尿素、炭酸アンモニウム、重炭酸アンモニウム、カルバミン酸アンモニウム、リン酸水素カルシウム、ナフタレンおよびそれらの混合物からなる群から選択される離隔剤と、
iii.d−リモネンを含む非極性液体バインダとを有する混合物を調製する工程と、
b.混合物を成形する工程と、
c.非極性液体バインダおよび離隔剤を除去して金属インプラント内に複数の孔を形成する、50℃〜250℃の温度での加熱除去工程とを含むことを特徴とする方法。 - 生体適合性金属粉末が、チタン、チタン合金、コバルト、コバルト合金、クロム、クロム合金、タンタル、タンタル合金およびステンレス鋼からなる群から選択されることを特徴とする請求項14に記載の方法。
- 離隔剤が、重炭酸アンモニウムを含むことを特徴とする請求項14または15に記載の方法。
- 離隔剤の除去後、真空圧下で金属を焼結する工程をさらに含むことを特徴とする請求項14〜16のいずれか1項に記載の方法。
- インプラントの成形、インプラントの機械加工、インプラントの基質への着接、または多孔性インプラントの基質への溶接の少なくとも1つの工程をさらに含むことを特徴とする請求項14〜17のいずれか1項に記載の方法。
- 加熱除去工程が少なくとも1回の焼結および少なくとも1回の焼入れを含むことを特徴とする請求項14〜18のいずれか1項に記載の方法。
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US7635447B2 (en) | 2009-12-22 |
WO2007097949A3 (en) | 2007-11-29 |
US7883661B2 (en) | 2011-02-08 |
US8361380B2 (en) | 2013-01-29 |
JP2014221945A (ja) | 2014-11-27 |
US20130118377A1 (en) | 2013-05-16 |
US8814978B2 (en) | 2014-08-26 |
JP2009526614A (ja) | 2009-07-23 |
CN101405039B (zh) | 2013-10-16 |
US20100003155A1 (en) | 2010-01-07 |
EP1996248A2 (en) | 2008-12-03 |
CN101405039A (zh) | 2009-04-08 |
JP5613372B2 (ja) | 2014-10-22 |
WO2007097949A2 (en) | 2007-08-30 |
AU2007217978A1 (en) | 2007-08-30 |
AU2007217978B2 (en) | 2013-01-10 |
EP1996248A4 (en) | 2012-02-29 |
US20110123382A1 (en) | 2011-05-26 |
EP1996248B1 (en) | 2016-04-20 |
US20070196230A1 (en) | 2007-08-23 |
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