JP5260526B2 - 人工装具インプラントのための硬度変動ステム - Google Patents
人工装具インプラントのための硬度変動ステム Download PDFInfo
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- JP5260526B2 JP5260526B2 JP2009529399A JP2009529399A JP5260526B2 JP 5260526 B2 JP5260526 B2 JP 5260526B2 JP 2009529399 A JP2009529399 A JP 2009529399A JP 2009529399 A JP2009529399 A JP 2009529399A JP 5260526 B2 JP5260526 B2 JP 5260526B2
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- A—HUMAN NECESSITIES
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- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
- A61F2250/0026—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in surface structures
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
- A61F2250/0029—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in bending or flexure capacity
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
- A61F2250/0039—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in diameter
-
- 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
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00011—Metals or alloys
- A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys
-
- 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
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00011—Metals or alloys
- A61F2310/00029—Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Transplantation (AREA)
- Biomedical Technology (AREA)
- Geometry (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (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)
Description
本願は、2006年9月20日に出願された米国仮特許出願番号60/826336号の優先権を主張する。
応力遮蔽度=(1−(1/(1+N(II/IB))))×100
を用いて算出されることを規定しており、ここで、Nは弾性係数比=E implant /E bone であり、IIはインプラントの断面二次モーメントであり、IBは骨の断面二次モーメントである。
応力遮蔽度=(1−(1/(1+N(II/IB))))×100
を用いて算出されることを規定しており、ここで、Nは弾性係数比=E implant /E bone であり、IIはインプラントの断面二次モーメントであり、IBは骨の断面二次モーメントである。
応力遮蔽度=(1−(1/(1+N(II/IB))))×100
であり、ここで、Nは弾性係数比=E implant /E bone であり、IIはインプラントの断面二次モーメントであり、IBは骨の断面二次モーメントである。
慣性モーメントの算出プロセスと同様に、インプラントを変化させる必要性は、骨の変化に基づいている。例えば、大腿骨に沿って骨の性質及び幅が迅速に変化している場合、インプラントは、インプラントの断面をさらに調節することを必要とする。したがって、局所的な骨の硬度は、インプラントの他の部分に影響することなく断面に局所的な変化をもたらす。
Claims (22)
- 骨のためのインプラントを形成するための方法であって、
前記骨の長軸に沿って延在する長さを有するインプラントについて第1全体外形を生成する工程と、
前記インプラントの断面のインプラントの断面二次モーメントを決定する工程と、
前記インプラントの断面と同一面上にある前記骨の断面について骨の断面二次モーメントを決定する工程と、
前記インプラントの断面二次モーメント及び前記骨の断面二次モーメントから応力遮蔽度を算出する工程と、
算出された前記応力遮蔽度を所定閾値と比較する工程と、
算出された前記応力遮蔽度が前記所定閾値と一致するまで前記インプラントの断面を局所的に調節することによって前記インプラントのさらなる全体外形を繰り返して生成する工程と、
を備えることを特徴とする方法。 - 前記骨の断面について前記骨の断面二次モーメントを決定する工程は、患者のレントゲン写真の情報から決定されることを特徴とする請求項1に記載の方法。
- 前記インプラント及び前記骨の弾性係数を設定する工程をさらに備えることを特徴とする請求項1または2に記載の方法。
- 前記骨の前記弾性係数は、前記骨の性質から算出されることを特徴とする請求項3に記載の方法。
- 前記骨の前記性質は、患者のレントゲン写真の情報から算出されることを特徴とする請求項4に記載の方法。
- 前記決定する工程と、前記算出する工程と、前記比較する工程と、さらなる全体形状を繰り返して生成する工程と、を前記インプラントの長手方向に沿って繰り返して実行する工程をさらに備えることを特徴とする請求項1から5のいずれか1項に記載の方法。
- 前記繰り返す工程は、互いに等間隔で離間した位置で実行されることを特徴とする請求項6に記載の方法。
- 前記繰り返す工程は、前記インプラントの前記断面が前記インプラントの長手方向に沿って変化すると隣接する断面に漸増的に近接して実行されることを特徴とする請求項6に記載の方法。
- 前記繰り返す工程は、前記骨の前記断面が前記インプラントの長手方向に沿って変化すると隣接する断面に漸増的に近接して実行されることを特徴とする請求項6に記載の方法。
- 前記繰り返す工程は、前記骨の性質が前記インプラントの長手方向に沿って変化すると隣接する断面に漸増的に近接して実行されることを特徴とする請求項6に記載の方法。
- 前記応力遮蔽度は、式、
応力遮蔽度=(1−(1/(1+N(II/IB))))×100
(Nは弾性係数比=E implant /E bone であり、IIはインプラントの断面二次モーメントであり、IBは骨の断面二次モーメントである)を用いて算出されることを特徴とする請求項1から10のいずれか1項に記載の方法。 - 骨へ埋め込むためのインプラントを形成するためのシステムであって、
前記骨の長手方向に沿って延在するように構成されたインプラント部材の初期表現物であって、第1部材が断面を有し、前記断面があるインプラントの断面二次モーメントを有する初期表現物と、
前記骨の性質及び寸法に関連する骨情報であって、当該骨情報が前記インプラントの断面と同一平面上にある前記骨の断面についてある骨の断面二次モーメントを提供し、前記インプラントの断面二次モーメント及び前記骨の断面二次モーメントから応力遮蔽度が算出されて所定閾値と比較される骨情報と、
前記インプラント部材の繰返表現物であって、算出された前記応力遮蔽度が前記所定閾値と一致して前記初期表現物が当該繰返表現物に変化するまで前記インプラントの断面を局所的に調節することによって得られる繰返表現物と、
を備えることを特徴とするシステム。 - 前記骨情報は、患者のレントゲン写真の情報から決定されることを特徴とする請求項12に記載のシステム。
- 前記初期表現物は、前記インプラントの弾性係数を備え、
前記骨情報は、前記骨の弾性係数を備えることを特徴とする請求項12または13に記載のシステム。 - 前記骨の弾性係数は、前記骨の性質から算出されることを特徴とする請求項14に記載のシステム。
- 前記骨の性質は、患者のレントゲン写真の情報から算出されることを特徴とする請求項15に記載のシステム。
- 前記骨の長手方向に沿って前記インプラントのさらなる断面を備えることを特徴とする請求項12から16のいずれか1項に記載のシステム。
- 複数の前記さらなる断面は、互いに等間隔で離間して位置付けられていることを特徴とする請求項17に記載のシステム。
- 複数の前記さらなる断面は、前記インプラントの前記断面が前記インプラントの長手方向に沿って変化すると隣接する断面に漸増的に近接して位置付けられていることを特徴とする請求項17に記載のシステム。
- 複数の前記さらなる断面は、前記骨の前記断面が前記インプラントの長手方向に沿って変化すると隣接する断面に漸増的に近接して位置付けられていることを特徴とする請求項17に記載のシステム。
- 複数の前記さらなる断面は、前記骨の性質が前記インプラントの長手方向に沿って変化すると隣接する断面に漸増的に近接して位置付けられていることを特徴とする請求項17に記載のシステム。
- 前記応力遮蔽度は、式、
応力遮蔽度=(1−(1/(1+N(II/IB))))×100
(Nは弾性係数比=E implant /E bone であり、IIはインプラントの断面二次モーメントであり、IBは骨の断面二次モーメントである)を用いて算出されることを特徴とする請求項12から21のいずれか1項に記載のシステム。
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US82633606P | 2006-09-20 | 2006-09-20 | |
US60/826,336 | 2006-09-20 | ||
PCT/US2007/079063 WO2008036831A2 (en) | 2006-09-20 | 2007-09-20 | Variable stiffness stem for prosthetic implants |
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JP2010504173A JP2010504173A (ja) | 2010-02-12 |
JP2010504173A5 JP2010504173A5 (ja) | 2013-02-21 |
JP5260526B2 true JP5260526B2 (ja) | 2013-08-14 |
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JP2009529399A Expired - Fee Related JP5260526B2 (ja) | 2006-09-20 | 2007-09-20 | 人工装具インプラントのための硬度変動ステム |
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US (1) | US8751198B2 (ja) |
EP (1) | EP2068772A2 (ja) |
JP (1) | JP5260526B2 (ja) |
AU (1) | AU2007299711A1 (ja) |
CA (1) | CA2664425A1 (ja) |
WO (1) | WO2008036831A2 (ja) |
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WO2010012048A1 (en) * | 2008-07-28 | 2010-02-04 | Silesco Pty Ltd | Orthopaedic device |
CN106618804B (zh) * | 2016-12-28 | 2018-06-22 | 嘉思特华剑医疗器材(天津)有限公司 | 一种骨诱导差异化的金属骨小梁膝关节假体及其制备方法 |
EP3520739B1 (en) | 2018-02-06 | 2020-12-02 | Tornier | Method for manufacturing a patient-specific prosthesis for a fractured long bone |
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US4936862A (en) * | 1986-05-30 | 1990-06-26 | Walker Peter S | Method of designing and manufacturing a human joint prosthesis |
DE69228190T2 (de) * | 1991-10-07 | 1999-09-23 | Boehringer Mannheim Corp | Femorales hüftimplantat mit verringerter steifheit |
US5509935A (en) * | 1994-02-16 | 1996-04-23 | Wright Medical Technology, Inc. | Intramedullary implant with optimized geometric stiffness |
US5594651A (en) * | 1995-02-14 | 1997-01-14 | St. Ville; James A. | Method and apparatus for manufacturing objects having optimized response characteristics |
US6093209A (en) * | 1998-08-20 | 2000-07-25 | Johnson & Johnson Professional, Inc. | Proximally holllow prosthesis |
NZ517954A (en) * | 1999-08-23 | 2004-09-24 | James A | Specification of finite element material properties and symmetries for composite part manufacture |
US6514288B2 (en) * | 2001-02-23 | 2003-02-04 | Zimmer, Inc. | Prosthetic stem with strengthening rib |
US7534271B2 (en) * | 2004-01-22 | 2009-05-19 | Smith + Nephew | Femoral hip prosthesis and method of implantation |
WO2005117763A2 (en) | 2004-05-28 | 2005-12-15 | Smith & Nephew, Inc. | Fluted intramedullary stem |
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2007
- 2007-09-20 WO PCT/US2007/079063 patent/WO2008036831A2/en active Application Filing
- 2007-09-20 CA CA002664425A patent/CA2664425A1/en not_active Abandoned
- 2007-09-20 US US12/442,326 patent/US8751198B2/en active Active
- 2007-09-20 JP JP2009529399A patent/JP5260526B2/ja not_active Expired - Fee Related
- 2007-09-20 AU AU2007299711A patent/AU2007299711A1/en not_active Abandoned
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US20100131245A1 (en) | 2010-05-27 |
AU2007299711A1 (en) | 2008-03-27 |
WO2008036831A2 (en) | 2008-03-27 |
EP2068772A2 (en) | 2009-06-17 |
CA2664425A1 (en) | 2008-03-27 |
US8751198B2 (en) | 2014-06-10 |
WO2008036831A3 (en) | 2008-08-14 |
JP2010504173A (ja) | 2010-02-12 |
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