JP4990296B2 - 椎間板置換装置 - Google Patents
椎間板置換装置 Download PDFInfo
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- JP4990296B2 JP4990296B2 JP2008555944A JP2008555944A JP4990296B2 JP 4990296 B2 JP4990296 B2 JP 4990296B2 JP 2008555944 A JP2008555944 A JP 2008555944A JP 2008555944 A JP2008555944 A JP 2008555944A JP 4990296 B2 JP4990296 B2 JP 4990296B2
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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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- 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
- A61F2/02—Prostheses implantable into the body
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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
- A61F2/02—Prostheses implantable into the body
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- Orthopedic Medicine & Surgery (AREA)
- Neurology (AREA)
- Heart & Thoracic Surgery (AREA)
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- Transplantation (AREA)
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- Vascular Medicine (AREA)
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Description
∫M.dα=∫F.dx
Mは、所定軸の周囲の回転を生成するため加えられたモーメントである。
αは、加えられたモーメントにより生成される角度変化。
Fは、ベアリング装置にかかる軸方向負荷の力。
Xは、椎骨間スペースの増加量。
x=∫I/f(α).da/F
100 第1部材
102 第2部材
104,106 関節表面
104 第1関節表面
106 第2関節表面
108 凸状湾曲王冠領域
110 頂部
112 凹状湾曲遷移領域
130,132 リセス
10 第2脊椎接触表面
22 第1脊椎接触表面
28 垂直方向
32 突起
30 リセス
48 突起部
64 ボール・ベアリング
68 リセス
70 リセス
80,82 ***部
80 前後***部
82 横並び***部
Claims (26)
- 第1脊椎本体の終板と第2脊椎本体の終板の間の脊柱内の椎間板の少なくとも一部を置換する装置において、
(a)前記第1脊椎本体の終板と係合する第1脊椎接触表面、および前記第1脊椎接触表面の反対側に設けられ、少なくとも一つの突起部を含む第1関節表面を有する第1部材と、
(b)前記第2脊椎本体の終板と係合する第2脊椎接触表面、および前記第2脊椎接触表面の反対側に設けられ、前記少なくとも一つの突起部と協動する少なくとも一つのリセスを含む第2関節表面を有する第2部材と、を有し、
椎骨間距離が、前記第1脊椎接触表面の図心と前記第2脊椎接触表面の図心との間を結ぶ線の軸方向成分として、定義され、
圧縮性の軸方向力がかかった時に、
(i)前記第1脊椎接触表面と前記第2脊椎接触表面は、所定の最小椎骨間距離を確保するために、圧縮力に抗して支持され、
(ii)前記第2部材は、第1部材に対し、軸回転と、前方屈曲及び後方伸展のいずれかと、側面方向曲げと、に対応する動きの間、変位可能であり、前記各動きは対応する動作範囲を有し、
(iii)前記椎骨間距離は、前記軸回転、前方屈曲及び後方伸展、および側面方向曲げ、の全ての方向に対して、前記各々の方向に対する前記動作範囲に亘って、中立位置からの角変位により連続的に増加し、これにより非衝撃的に動きを減衰するように、
前記第1関節表面の前記少なくとも一つの突起部と前記第2関節表面の少なくとも一つのリセスとが関節構造の少なくとも一部を構成することを特徴とする椎間板の少なくとも一部を置換する装置。 - 中立位置からの角変位の関数としての椎骨間距離の第1導関数は、前記軸回転、前方屈曲及び後方伸展、および側面方向曲げ、のそれぞれに対し、前記動作範囲の大部分に亘って、前記中立位置からの角変位に対し単調に増加するように構成されることを特徴とする請求項1記載の装置。
- 前記第2部材が、前記第1部材に対し、軸回転、前方屈曲及び後方伸展のいずれか、側面方向曲げの組み合わせに対応する動作中、変位可能であるように構成されることを特徴とする請求項1または2に記載の装置。
- 圧縮性の軸方向負荷がかかった状態で、所定の中立位置の方向に戻るような自己バイアスがかかっていることを特徴とする請求項1から3のいずれかに記載の装置。
- 前記第1部材と前記第2部材とは、剛体であることを特徴とする請求項1から4のいずれかに記載の装置。
- 前記第1部材と前記第2部材とは、主に金属材料から形成されることを特徴とする請求項1から4のいずれかに記載の装置。
- 前記第1部材と前記第2部材とは、主にセラミック材料から形成されることを特徴とする請求項1から4のいずれかに記載の装置。
- 前記少なくとも一つの突起部を含む前記第1関節表面と前記少なくとも一つのリセスを含む前記第2関節表面とは、前記関節構造を提供するよう、直接接触して配置されることを特徴とする請求項1から7のいずれかに記載の装置。
- 前記突起部は、前後方向の断面では、前記突起部の外側形状が、
(a)凸状に湾曲した王冠状の領域であって、前記王冠状領域の頂部で局部的に最大の曲率半径を有する王冠状の領域と、
(b)前記王冠状の領域から前記突起部の両側の付け根部へそれぞれ連なる領域であって、
凹状に湾曲した形状を有する遷移領域と、
を有するように形成されることを特徴とする請求項1から8のいずれかに記載の装置。 - 前記突起部は、左右方向の断面では、前記突起部の外側形状が、
(a)凸状に湾曲した王冠状の領域であって、前記王冠状領域の頂部で局部的に最大の曲率半径を有する王冠状の領域と、
(b)前記王冠状の領域から前記突起部の両側の付け根部へそれぞれ連なる領域であって、
凹状に湾曲した形状を有する遷移領域と、
を有するように形成されることを特徴とする請求項9に記載の装置。 - 前記突起部は、前記突起部の前記左右方向の断面の幅が、前記突起部の前記前後方向の断面の幅より大きいように形成されることを特徴とする請求項10に記載の装置。
- 前記突起部は、軸方向断面において前記突起部の外形は楕円形であるように形成されることを特徴とする請求項10または11に記載の装置。
- 前記協動するリセスは、凸状に湾曲した遷移領域を介して前記第2関節表面の周囲領域に至る楕円状の凹部として形成されることを特徴とする請求項12に記載の装置。
- 前記突起部は、複数の凹んだ側面領域を有し、
前記協動するリセスは、対応する複数の***領域を有することを特徴とする請求項10に記載の装置。 - 前記第1関節表面の少なくとも一つの突起部は複数の***部を有し、
前記第2関節表面の少なくとも一つのリセスは、前記***部を収納する複数の溝を有し、
前記***部は、前記溝に隣接する表面と相互作用して、前記椎骨間距離を増加させることを特徴とする請求項1から7のいずれかに記載の装置。 - 前記第1関節表面は、複数の前記突起部を有し、
前記第2関節表面は、複数の前記突起部に協動する複数の前記リセスを有することを特徴とする請求項1から7のいずれかに記載の装置。 - 第1脊椎本体の終板と第2脊椎本体の終板の間の脊柱内の椎間板の少なくとも一部を置換する装置において、
(a)前記第1脊椎本体の終板と係合する第1脊椎接触表面、および前記第1脊椎接触表面の反対側に設けられ、第1のリセスを複数個含む第1関節表面を有する第1部材と、
(b)前記第2脊椎本体の終板と係合する第2脊椎接触表面、および前記第2脊椎接触表面の反対側に設けられ、第2のリセスを複数個含む第2関節表面を有する第2部材と、
(c)前記第1のリセスと前記第2のリセスとが一対になって対向する間にそれぞれのベアリング要素が挟持された、複数個のベアリング要素と、を有し、
椎骨間距離が、前記第1脊椎接触表面の図心と前記第2脊椎接触表面の図心との間を結ぶ線の軸方向成分として、定義され、
圧縮性の軸方向力がかかった時に、
(i)前記第1脊椎接触表面と前記第2脊椎接触表面は、所定の最小椎骨間距離を確保するために、圧縮力に抗して支持され、
(ii)前記第2部材は、第1部材に対し、軸回転と、前方屈曲及び後方伸展のいずれかと、側面方向曲げと、に対応する動きの間、変位可能であり、前記各動きは対応する動作範囲を有し、
(iii)前記椎骨間距離は、前記軸回転、前方屈曲及び後方伸展、および側面方向曲げ、の全ての方向に対して、前記各々の方向に対する前記動作範囲に亘って、中立位置からの角変位により連続的に増加し、これにより非衝撃的に動きを減衰するように、
前記第1関節表面の前記複数の第1のリセスと前記第2関節表面の前記複数の第2のリセスと前記複数のベアリング要素とが関節構造の少なくとも一部を構成することを特徴とする椎間板の少なくとも一部を置換する装置。 - 前記ベアリング要素は、ボール・ベアリングであることを特徴とする請求項17に記載の装置。
- 前記第1関節表面の前記複数の第1のリセスと前記第2関節表面の前記複数の第2のリセスとは、前記ボール・ベアリングよりも大きな曲率半径の部分的に球状リセスであり、前記第1のリセスの位置は、前記第2のリセスの位置に対し、ずれていることを特徴とする請求項18に記載の装置。
- 4個の前記第1のリセスおよび4個の前記第2のリセスと4個のボール・ベアリングとを備えることを特徴とする請求項19に記載の装置。
- 中立位置からの角変位の関数としての椎骨間距離の第1導関数は、前記軸回転、前方屈曲及び後方伸展、および側面方向曲げ、のそれぞれに対し、前記動作範囲の大部分に亘って、前記中立位置からの角変位に対し単調に増加するように構成されることを特徴とする請求項17から20のいずれかに記載の装置。
- 前記第2部材が、前記第1部材に対し、軸回転、前方屈曲及び後方伸展のいずれか、側面方向曲げの組み合わせに対応する動作中、変位可能であるように構成されることを特徴とする請求項17から21のいずれかに記載の装置。
- 圧縮性の軸方向負荷がかかった状態で、所定の中立位置の方向に戻るような自己バイアスがかかっていることを特徴とする請求項17から22のいずれかに記載の装置。
- 前記第1部材と前記第2部材とは、剛体であることを特徴とする請求項17に記載の装置。
- 前記第1部材と前記第2部材とは、主に金属材料から形成されることを特徴とする請求項17に記載の装置。
- 前記第1部材と前記第2部材とは、主にセラミック材料から形成されることを特徴とする請求項17に記載の装置。
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US77577206P | 2006-02-23 | 2006-02-23 | |
PCT/IL2007/000239 WO2007096879A2 (en) | 2006-02-23 | 2007-02-22 | Intervertebral disc replacement |
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EP (1) | EP1986576B1 (ja) |
JP (1) | JP4990296B2 (ja) |
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ES (1) | ES2382897T3 (ja) |
HK (1) | HK1137134A1 (ja) |
NZ (1) | NZ570398A (ja) |
TR (1) | TR200906465T1 (ja) |
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UA96751C2 (ru) | 2011-12-12 |
US20120191195A1 (en) | 2012-07-26 |
AU2007219085A1 (en) | 2007-08-30 |
CA2641942C (en) | 2014-01-28 |
CN101495066A (zh) | 2009-07-29 |
EP1986576B1 (en) | 2012-04-11 |
EP1986576A2 (en) | 2008-11-05 |
EP1986576A4 (en) | 2009-11-18 |
US20100042220A1 (en) | 2010-02-18 |
AU2007219085B2 (en) | 2012-02-16 |
WO2007096879A2 (en) | 2007-08-30 |
CA2641942A1 (en) | 2007-08-30 |
US8142505B2 (en) | 2012-03-27 |
NZ570398A (en) | 2011-08-26 |
KR20080107387A (ko) | 2008-12-10 |
HK1137134A1 (en) | 2010-07-23 |
ES2382897T3 (es) | 2012-06-14 |
TR200906465T1 (tr) | 2009-12-21 |
EA013988B1 (ru) | 2010-08-30 |
CN101495066B (zh) | 2013-08-07 |
WO2007096879A3 (en) | 2009-04-16 |
JP2009532076A (ja) | 2009-09-10 |
US8518119B2 (en) | 2013-08-27 |
EA200801741A2 (ru) | 2009-02-27 |
US20090062920A1 (en) | 2009-03-05 |
DK1986576T3 (da) | 2012-07-23 |
EA200801741A3 (ru) | 2009-06-30 |
BRPI0721029A2 (pt) | 2015-05-05 |
KR101337707B1 (ko) | 2013-12-06 |
ATE552805T1 (de) | 2012-04-15 |
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