JP2008539829A - 椎間板プロテーゼ - Google Patents
椎間板プロテーゼ Download PDFInfo
- Publication number
- JP2008539829A JP2008539829A JP2008509277A JP2008509277A JP2008539829A JP 2008539829 A JP2008539829 A JP 2008539829A JP 2008509277 A JP2008509277 A JP 2008509277A JP 2008509277 A JP2008509277 A JP 2008509277A JP 2008539829 A JP2008539829 A JP 2008539829A
- Authority
- JP
- Japan
- Prior art keywords
- prosthesis
- tongue
- groove
- elements
- implant
- 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.)
- Granted
Links
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Images
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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
- 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
- A61F2310/00395—Coating or prosthesis-covering structure made of metals or of alloys
- A61F2310/00407—Coating made of titanium or of Ti-based 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
- A61F2310/00389—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
- A61F2310/00796—Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite
Abstract
Description
図14および図15は、それぞれ平面I−IおよびII−IIに沿った、図5のインプラントの断面図である。図から分かるように、インプラントが中立位置にあるとき、部分12および14の両方が位置合せされる。図14はまた、対向する表面のいくつかの部分のみが接触することを示すことによって、部分12および14の様々な協働する湾曲表面の、曲率半径の差を示す。図14および図15はまた、ペグ44とスロット48の間のサイズの差を示す。図示のように、また以下の説明で明らかになるように、スロットは、その長さ、すなわち端部15と17の間を測定するときの寸法に沿って、より大きいサイズの差を有する。
図16から図18は、端部から端部へと変位する、すなわち、一方の部分、たとえば上方部分12が、もう一方の部分、たとえば下方部分14に対して、相対的に端部15または17の一方へと動かされる場合の、図2のインプラント10を示す。そのような変位は、インプラントに接触する脊柱領域が、後方向から前方向(屈曲)、または前方向から後方向(伸展)のいずれかに動かされるときに生じる。留意されるように、インプラントの上方部分12と下方部分14の間の運動範囲は、2つの方法で制限される。まず、上方部分12が後端部15に向かって動かされる運動の途中に、舌部24の広がった部分30が、前端部17にて上向きに持ち上がり、下方部分14の溝26の口部34の壁部に接触する。この運動の抑制を、図16に示す。さらに、図18に示すように、上方部分の後端部15へと向かう運動は、スロットの前壁50がペグ44に接触するまで続き、その点にて、さらなる運動が妨げられる。また、図18において留意されるように、上方部分12の運動は、部分の端壁が、変位角度θ1だけずらされるまで続けられる。一実施形態では、この変位角度は、各方向で4.25°とすることができる。すなわち、屈曲および伸長の完全な範囲では、インプラントによってもたらされる運動範囲は8.5°となる。この範囲は、単なる例に過ぎず、決して本発明を限定するものであるとみなされるべきではないことが、理解されるであろう。
図19から図21は、上方部分12が下方部分14に対して垂直軸の周りで軸回転される場合の、本発明のインプラントを示す。「垂直」という用語は、便宜上使用されるものであり、本発明を何らかの特定の空間的な向きに限定するものとみなされるべきではない。図19および図21に示すように、上方部分12の回転運動は、舌部39aの端部(図示せず)および39bの端部(図示する)が、それぞれ溝41aの端部(図示する)および41bの端部(図示せず)に接触する点にて、制限される。中心軸点Pの周りでの上方部分12の回転は、最高角度θ2まで可能とすることができる。上記説明に照らせば理解されるように、舌部39aおよび39bが凸型であるため、軸点Pは、基本的にディスクの中心にある。上記で議論したように、様々な運動制限構成要素の相対的なサイズ決めは、本開示を再検討することにより、当業者に明らかになるであろう。例として、一方向に4°の回転角度(θ2)が可能になるように、構成要素のサイズ決めを行うことができる。すなわち、インプラントによってもたらされる軸回転の全範囲は、8°となる。この範囲は、単なる例に過ぎず、決して本発明を限定するものとみなされるべきではないことが、理解されるであろう。
図22から図24は、側部から側部へのまたは側方曲げ運動における、インプラントの上方部分12の運動を示す。側部から側部へのまたは側方曲げ運動とは、上方部分12がインプラントの右側13に向かって横方向に動かされる運動方向を意味する。理解されるように、部分12は同様に、左側11に向かって動かすこともできる。図22および図24に示す例では、上方部分12の運動は、舌部24の左側にある広がった部分30が口部34の壁部に当接するときに、抑制されることに留意されたい。そのような抑制は、下方部分14の表面42bに当接する上方部分12の表面40bによって生じることにも留意されたい。上方部分12の運動は、各方向に、たとえば4°など、角度θ3にわたり続くことを可能にすることができる。すなわち、インプラントによってもたらされる横方向の運動の全運動範囲は、8°となる。この範囲は、単なる例に過ぎず、決して本発明を限定するものとみなされるべきではないことが、理解されるであろう。
本発明の別の態様では、部分12および14の外部または融合表面16および18を、内部への骨の成長を促進するために処理することができ、または、隣接する骨組織へのインプラントの固定を促進する様に形状付けることができる。隣接する骨との堅固な統合のために、インプラントの骨結合性を向上させるように、表面準備の様々な方法を用いることができる。たとえば、プラズマ、チタン、またはヒドロキシアパタイトなどを含有する、様々な被覆を使用することができる。さらに、隣接する骨構造への固定を促進するために、穴または微小孔、棘またはピン、ならびに別の特徴を、インプラントに設けることができる。
Claims (18)
- 椎間板プロテーゼであって、
前方および後方端部と側部とを有する、第1および第2の協働要素を備え、
前記第1の要素が、外面と、前記第2の要素に向かって方向付けられる内面とを備え、
前記第2の要素が、外面と、前記第1の要素に向かって方向付けられる内面とを備え、
前記第1の要素の内面が、ほぼ中央で長手方向に延びて関節をなして、前記第1の要素の前記前方端部と前記後方端部との間に延びる舌部と、前記舌部の両側部上で長手方向に延び第1の1対の関節をなすショルダとを備え、
前記第2の要素の内面が、ほぼ中央で長手方向に延びて関節をなして、前記第2の要素の前記前方端部と前記後方端部との間に延びる溝と、前記溝の両側部上で長手方向に延び第2の1対の関節をなすショルダとを備え、
前記舌部および溝が協働するような構成にあり、前記溝が、その中に前記舌部を可動式に受けるようになされ、
前記第1の1対のショルダおよび第2の1対のショルダが協働するような構成にあり、前記プロテーゼが組み立てられた状態にあるとき、前記第1の要素の前記ショルダが前記第2の要素の前記ショルダを支持する、椎間板プロテーゼ。 - 前記舌部が、前記第1の要素の前記内面に近接する第1の狭い端部と、前記第1の端部に対向する幅広の終端部とを備え、前記溝が、前記舌部の終端部の前記幅より狭い開口部と、前記舌部の終端部を受け入れるための基部とを備える、請求項1に記載のプロテーゼ。
- 前記舌部の前記終端部および前記溝の前記基部が、協働する関節部を備え、前記関節部が、前記前方端部と前記後方端部との間での前記第1および第2の要素の相対的な並進運動を可能にし、前記第1および第2の要素の相対的な側方運動を可能にする、請求項2に記載のプロテーゼ。
- 前記舌部の前記終端部と前記溝の前記開口部との間のサイズの違いにより、前記並進および側方運動の量を制限し、前記運動は、前記舌部の終端部が前記溝の前記開口部に接触するときに抑制される、請求項3に記載のプロテーゼ。
- 前記溝の前記基部が、前記第1の要素と前記第2の要素との間の相対的な軸回転を可能にするために、前記舌部の前記終端部よりも広い、請求項4に記載のプロテーゼ。
- 前記溝の前記基部と前記舌部の前記終端部との間のサイズの違いにより、前記回転運動の量を制限し、前記運動は、前記舌部の終端部が前記溝の前記基部を形成する壁部に接触するときに抑制される、請求項5に記載のプロテーゼ。
- 前記第1および第2の要素のうちの一方が、その前記内面から延びるほぼ中央に配置されるペグを備え、前記第1および第2の要素のうちのもう一方が、前記ペグを受けるための凹部を備える、請求項6に記載のプロテーゼ。
- 前記凹部は、前記ペグよりも大きい、請求項7に記載のプロテーゼ。
- 前記凹部は、前記ペグがその中で動くことが可能になるようにサイズ決めされる、請求項8に記載のプロテーゼ。
- 前記ペグと前記凹部の前記壁部との接触が、前記第1および第2の要素間の相対運動を制限する、請求項9に記載のプロテーゼ。
- 前記凹部が、弾性材料を含有する基部を備える、請求項10に記載のプロテーゼ。
- 前記ペグが、前記第2の要素上に設けられ、前記凹部が、前記第1の要素上に設けられる、請求項11に記載のプロテーゼ。
- 前記第1および第2の要素の前記外面が、1つまたは複数の骨係留手段を備える、請求項12に記載のプロテーゼ。
- 前記骨係留手段は、1つまたは複数の物理的および化学的係留手段を備える、請求項13に記載のプロテーゼ。
- 前記骨係留手段が、ペグ、ピン、孔、開口、接着剤、および組織成長促進剤から選択される、請求項14に記載のプロテーゼ。
- 前記第1および第2の要素の前記外面が、その前方−後方軸に対して垂直な横断面の周りでほぼ凹状である、請求項15に記載のプロテーゼ。
- 前記第1および第2の要素の前記外面が、その前記前方−後方軸に沿って延びる溝を備える、請求項16に記載のプロテーゼ。
- 前記第1および第2の要素の前記外面が、ほぼ平坦である、請求項15に記載のプロテーゼ。
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2006
- 2006-05-02 WO PCT/CA2006/000676 patent/WO2006116851A1/en active Application Filing
- 2006-05-02 KR KR1020077028168A patent/KR101357783B1/ko active IP Right Grant
- 2006-05-02 JP JP2008509277A patent/JP4950181B2/ja not_active Expired - Fee Related
- 2006-05-02 EP EP06741431A patent/EP1879528B1/en not_active Not-in-force
- 2006-05-02 MX MX2007013293A patent/MX2007013293A/es unknown
- 2006-05-02 BR BRPI0611090-8A patent/BRPI0611090A2/pt not_active IP Right Cessation
- 2006-05-02 RU RU2007144595/14A patent/RU2430703C2/ru not_active IP Right Cessation
- 2006-05-02 CN CN2011101586346A patent/CN102217983B/zh not_active Expired - Fee Related
- 2006-05-02 CN CN2006800151607A patent/CN101170970B/zh not_active Expired - Fee Related
- 2006-05-02 CA CA002607314A patent/CA2607314A1/en not_active Abandoned
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JP2003524505A (ja) * | 2000-02-28 | 2003-08-19 | エスディージーアイ・ホールディングス・インコーポレーテッド | 関節動作式脊柱インプラント |
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JP2004130077A (ja) * | 2002-06-27 | 2004-04-30 | Depuy Acromed Inc | 並進方式の人工椎間板 |
Also Published As
Publication number | Publication date |
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RU2430703C2 (ru) | 2011-10-10 |
CN102217983B (zh) | 2013-01-30 |
CA2607314A1 (en) | 2006-11-09 |
CN101170970B (zh) | 2011-08-03 |
EP1879528A4 (en) | 2009-11-18 |
BRPI0611090A2 (pt) | 2010-08-03 |
WO2006116851A1 (en) | 2006-11-09 |
AU2006243712A1 (en) | 2006-11-09 |
EP1879528B1 (en) | 2012-06-06 |
EP1879528A1 (en) | 2008-01-23 |
KR101357783B1 (ko) | 2014-02-03 |
US20080058944A1 (en) | 2008-03-06 |
MX2007013293A (es) | 2008-02-19 |
CN101170970A (zh) | 2008-04-30 |
JP4950181B2 (ja) | 2012-06-13 |
US8257441B2 (en) | 2012-09-04 |
RU2007144595A (ru) | 2009-06-10 |
CN102217983A (zh) | 2011-10-19 |
KR20080027240A (ko) | 2008-03-26 |
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