JP2009532076A - 椎間板置換装置 - Google Patents
椎間板置換装置 Download PDFInfo
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- A61F2/02—Prostheses implantable into the body
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- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/4611—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of spinal prostheses
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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
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- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
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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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- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
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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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Abstract
【課題】 3本の回転軸の周囲での動きに対し、動きの終了時の衝撃を回避する椎間板置換装置を提供すること。
【解決手段】 本発明の関節装置は、圧縮性の軸方向力がかかった時に、(i)前記第1脊椎接触表面と第2脊椎接触表面は、所定の最小椎骨間スペースを確保するために、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、軸回転と前方屈曲と後方伸展と側面方向曲げ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)前記椎骨間スペースは、前記軸回転、前方屈曲、後方伸展、側面方向曲げの各々の方向に対して、前記動作範囲の少なくとも一部に渡って、中立位置からスムーズな角度変化で増加する。
【選択図】 図1A
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 (20)
- 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脊椎接触表面と第1関節表面とを有する第1部材と、
(b)前記第2脊椎本体の終板と係合する第2脊椎接触表面と第2関節表面とを有する第2部材と
を有し、
椎骨間スペースが、第1脊椎接触表面の重心と第2脊椎接触表面の重心との間を結ぶ線の軸方向成分として、定義され、
前記第1関節表面と第2関節表面とは、関節装置の少なくとも一部を構成し、
圧縮性の軸方向力がかかった時に、
(i)前記第1脊椎接触表面と第2脊椎接触表面は、所定の最小椎骨間スペースを確保するために、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、軸回転と前方屈曲と後方伸展と側面方向曲げ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)前記椎骨間スペースは、前記軸回転、前方屈曲、後方伸展、側面方向曲げの各々の方向に対して、前記動作範囲の少なくとも一部に渡って、中立位置からスムーズな角度変化で増加し、これにより非衝撃的な動作減衰を提供する
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。 - 前記関節装置は、中立位置からの角度変化の関数としての椎骨間スペースの第1導関数は、前記軸回転、前方屈曲、後方伸展、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渡って、前記中立位置からの前記角度位置に対し単調に増加するよう、構成される
ことを特徴とする請求項1記載の装置。 - 前記関節装置は、前記第2部材は、前記第1部材に対し、軸回転、前方屈曲、後方伸展、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、構成される
ことを特徴とする請求項1記載の装置。 - 前記関節装置は、所定の中立位置に戻るように、軸方向負荷の下で、自動的に中心にいく
ことを特徴とする請求項1記載の装置。 - 前記第1部材と第2部材とは、剛性体である
ことを特徴とする請求項1記載の装置。 - 前記第1部材と第2部材とは、金属材料製である
ことを特徴とする請求項1記載の装置。 - 前記第1部材と第2部材とは、セラミック材料製である
ことを特徴とする請求項1記載の装置。 - 前記第1関節表面と第2関節表面は、前記関節装置を提供するよう、直接接触して留置される
ことを特徴とする請求項1記載の装置。 - 前記第1関節表面は、突起部を有し、
前記第2関節表面は、それと適合するリセスを有し、
前記突起部は、前後の断面では、前記突起部の外側形状は、
(a)凸状の湾曲した王冠状の領域と、
前記領域は、前記王冠状領域の頂部で、局部的な最小湾曲を有し、
(b)前記突起部のベースで凹んだ湾曲状の遷移領域と
を有するよう、形成される
ことを特徴とする請求項1記載の装置。 - 前記突起部は、冠面の断面では、前記突起部の外側形状は、
(a)凸状の湾曲した王冠状の領域と、
前記領域は、前記王冠状領域の頂部で、局部的な最小湾曲を有し、
(b)前記突起部のベースで凹んだ湾曲状の遷移領域と
を有するよう、形成される
ことを特徴とする請求項9記載の装置。 - 前記突起部は、前記突起部の冠面方向断面の幅は、前記突起部の前後方向断面の幅より大きいよう、形成される
ことを特徴とする請求項10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、形成される
ことを特徴とする請求項10記載の装置。 - 前記対応するリセスは、前記第2関節表面の周囲領域に接続される凸状に湾曲した遷移領域を有す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、
前記対応するリセスは、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記載の装置。 - 前記第1関節表面は、複数の***部を有する突起を有し、
前記第2関節表面は、前記***部を収納する複数のチャネルを有する対応するリセスを有し、
前記***部は、前記チャネルの隣接する表面と相互作用して、椎骨間スペースを増加させる
ことを特徴とする請求項1記載の装置。 - 前記第1関節表面は、複数の突起を有し、
前記第2関節表面は、それに対応するリセスを有する
ことを特徴とする請求項1記載の装置。 - 前記第1関節表面は、複数のリセスを有し、
前記第2関節表面は、それに対応するリセスを有し、
前記関節装置は、複数のベアリング要素を含み、
前記各ベアリング要素は、前記第1関節表面のリセスと第2関節表面のリセスの向かい合った対の間に入る
ことを特徴とする請求項1記載の装置。 - 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記載の装置。 - 前記第1関節表面と第2関節表面の複数のリセスは、前記ボール・ベアリングよりも大きな湾曲の部分的に球状リセスであり、
前記第1関節表面のリセスの位置は、前記第2関節表面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記載の装置。 - 前記関節装置は、前記第1関節表面と第2関節表面内の4個のリセスと4個のボール・ベアリングで具体化される
ことを特徴とする請求項19記載の装置。
Applications Claiming Priority (2)
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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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JP2009532076A true JP2009532076A (ja) | 2009-09-10 |
JP4990296B2 JP4990296B2 (ja) | 2012-08-01 |
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EP (1) | EP1986576B1 (ja) |
JP (1) | JP4990296B2 (ja) |
KR (1) | KR101337707B1 (ja) |
CN (1) | CN101495066B (ja) |
AT (1) | ATE552805T1 (ja) |
AU (1) | AU2007219085B2 (ja) |
BR (1) | BRPI0721029A2 (ja) |
CA (1) | CA2641942C (ja) |
DK (1) | DK1986576T3 (ja) |
EA (1) | EA013988B1 (ja) |
ES (1) | ES2382897T3 (ja) |
HK (1) | HK1137134A1 (ja) |
NZ (1) | NZ570398A (ja) |
TR (1) | TR200906465T1 (ja) |
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US8142505B2 (en) | 2012-03-27 |
EP1986576A4 (en) | 2009-11-18 |
CA2641942C (en) | 2014-01-28 |
WO2007096879A2 (en) | 2007-08-30 |
UA96751C2 (ru) | 2011-12-12 |
EP1986576A2 (en) | 2008-11-05 |
HK1137134A1 (en) | 2010-07-23 |
US20090062920A1 (en) | 2009-03-05 |
TR200906465T1 (tr) | 2009-12-21 |
KR101337707B1 (ko) | 2013-12-06 |
EP1986576B1 (en) | 2012-04-11 |
DK1986576T3 (da) | 2012-07-23 |
EA200801741A3 (ru) | 2009-06-30 |
US8518119B2 (en) | 2013-08-27 |
CA2641942A1 (en) | 2007-08-30 |
EA013988B1 (ru) | 2010-08-30 |
US20120191195A1 (en) | 2012-07-26 |
AU2007219085A1 (en) | 2007-08-30 |
EA200801741A2 (ru) | 2009-02-27 |
CN101495066B (zh) | 2013-08-07 |
CN101495066A (zh) | 2009-07-29 |
ES2382897T3 (es) | 2012-06-14 |
ATE552805T1 (de) | 2012-04-15 |
JP4990296B2 (ja) | 2012-08-01 |
BRPI0721029A2 (pt) | 2015-05-05 |
WO2007096879A3 (en) | 2009-04-16 |
AU2007219085B2 (en) | 2012-02-16 |
NZ570398A (en) | 2011-08-26 |
KR20080107387A (ko) | 2008-12-10 |
US20100042220A1 (en) | 2010-02-18 |
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