JP2011507612A - 拡張可能な椎体切除脊椎融合ケージ - Google Patents
拡張可能な椎体切除脊椎融合ケージ Download PDFInfo
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- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- 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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Abstract
Description
椎体切除症例(corpectomy cases)に使用される1つの従来型脊椎インプラントは、2つの椎骨間に挿入するための椎間スペーサであり、このスペーサは、調節可能な軸方向の高さと、環状の第1部材と、第1部材の内部に案内され、全高の調節のために第1部材に対して軸方向に位置調整可能である第2部材とを有する。
本発明者らは、米国特許第6,200,348号に開示されるスペーサ設計が、有利なことに、その高さを拡張するために対のスリーブ状ケージ構成要素を回転する必要性を排除したものの、それにもかかわらずグラフト窓部を有さないことを認識した。グラフト窓部は、グラフトをケージ内に挿入するのに使用される、ケージの面にある大きな開口部(米国特許第6,200,348号で提供されるダイヤモンド形の穴より大幅に大きな開口部)である。グラフト窓部の提供は、ケージの中央空間内にある進入口を外科医に提供し、これを通して外科医が骨グラフトをケージ内に挿入し得るという点で役立つ。グラフト窓部が提供されないとき、脊椎内にケージを挿入する前に(即ち、ケージがその未拡張の形態であるときに)、骨グラフトはケージ内に挿入されなければならない。それ故、後にケージを脊椎内に挿入してから拡張するとき、ケージの新たに拡張された部分には、グラフトが含まれない。グラフト窓部の提供は、外科医がケージを脊椎内に配置し、ケージを拡張してから、拡張されたケージに骨グラフトを充填することができる点で役立つ。したがって、グラフト窓部を有する拡張された挿入後のケージ内には、未充填の空間は存在しない。
第2部材が、外壁と、第1部材に面すると共に軸方向に延在する、その外壁に提供されたラチェットノッチとを含み、
第1部材は、スペーサの全高を調整するためにラチェットノッチと協働する、係合部材を有する壁を含み、
第1部材は、グラフト材料を挿入するためのグラフト窓部を有する。
第2部材が、外壁と、第1部材に面すると共に軸方向に延在する、その外壁に提供されたラチェットノッチとを含み、
第1部材は、スペーサの全高を調整するためにラチェットノッチと協働する、係合部材を有する壁を含み、
係合部材は、i)止めねじと、ii)止めねじと接触する外面及び第2部材のラチェットノッチと噛み合うよう適合された歯を有する内面を有する加圧プレートとを含む。
本発明の目的では、「スペーサ」及び「ケージ」は、互換的に使用される。
第2部材は、外壁3と、第1部材に面すると共に軸方向に延在する、その外壁に提供されたラチェットノッチ5とを含み、
第1部材は、スペーサの全高を調整するためにラチェットノッチと協働する、係合部材9を有する壁7を含み、
第1部材は、グラフト材料を挿入するための窓部10を有し、
係合部材9は、i)止めねじ11と、ii)止めねじと接触する外面15及び第2部材のラチェットノッチと噛み合うよう適合された歯19を有する内面17を有する加圧プレート13とを含む。
第2部材が、外壁と、第1部材に面すると共に軸方向に延在する、その外壁に提供されたラチェットノッチとを含み、
第1部材は、スペーサの全高を調整するためにラチェットノッチと協働する、係合部材を有する壁を含み、
第2部材84は、グラフト材料を挿入するための窓部85をその中に有する。
第1外側部材は、内壁107と、第2部材に面すると共に軸方向に延在する、その内壁に提供されたラチェットノッチ109とを含み、
第2内側部材は、スペーサの全高を調整するために第1外側部材のラチェットノッチと協働する、係合部材113を有する壁111を含み、
係合部材は、i)止めねじと、ii)止めねじと接触する外面及び第1外側部材のラチェットノッチと噛み合うよう適合された歯を有する内面を有する加圧プレートとを含む。
a)成長因子(骨誘導因子又は血管新生因子など)、
b)骨伝導性(顆粒の多孔性マトリックスなど)、
c)骨形成性(生存可能な骨芽前駆細胞(viable osteoprogenitor cells)など)、又は
d)プラスミドDNA
であってもよい。
a)酸溶性タイプIコラーゲン溶液(好ましくは、約1mg/mL〜約7mg/mLのコラーゲン)を含む第1の製剤と、
b)カルシウム及びリン酸塩を含有するリポソームを含む第2の製剤と、を含む。
(1) 2つの椎骨間に挿入するためのスペーサにおいて、前記スペーサが、可変的な軸方向の高さを有すると共に、第1部材と、前記第1部材の内部に案内され、全高を調整するために前記第1部材に対してその軸方向に摺動可能である第2部材と、を含み、
前記第2部材が、外壁と、前記第1部材に面すると共に前記軸方向に延在する、その外壁に提供されたラチェットノッチと、を含み、
前記第1部材が、前記スペーサの前記全高を調整するために前記ラチェットノッチと協働する、係合部材を有する壁を含み、
前記第1部材が、グラフト材料を挿入するためのグラフト窓部を有する、スペーサ。
(2) 前記第1部材が第1環を含む、実施態様1に記載のスペーサ。
(3) 前記第1環の外端に取り付けられた終板を更に含む、実施態様2に記載のスペーサ。
(4) 前記終板が凸形又は楔形を有する、実施態様2に記載のスペーサ。
(5) 前記終板が粗面化機構を有する外面を有する、実施態様2に記載のスペーサ。
(6) 前記粗面化機構が複数個の歯を含む、実施態様5に記載のスペーサ。
(7) 前記終板が、外面を有し、前記外面が、そこから延在する複数個のスパイクを有する、実施態様2に記載のスペーサ。
(8) 前記第1部材の前記第1環が複数個の横方向の貫通孔を含む、実施態様2に記載のスペーサ。
(9) 前記第1部材が、前記第1環の内側末端部分を包囲する強化カラーを含み、前記第1部材の遠位部分が、前記カラーから半径方向内方に延在する組立ピンを有し、前記第2部材の遠位部分が、対応する組立溝を有し、前記組立溝が、前記第2部材を前記第1部材内部で摺動可能に係合した状態に維持するために前記組立ピンと噛み合う、実施態様2に記載のスペーサ。
(10) 前記第1部材が、グラフト材料を挿入するための第1及び第2グラフト窓部を有し、前記2つのグラフト窓部が、バーにより分離された状態で、一方を他方の上にして配置される、実施態様1に記載のスペーサ。
前記第2部材が、外壁と、前記第1部材に面すると共に前記軸方向に延在する、その外壁に提供されたラチェットノッチと、を含み、
前記第1部材が、前記スペーサの前記全高を調整するために前記ラチェットノッチと協働する、係合部材を有する壁を含み、
前記係合部材が、i)止めねじと、ii)前記止めねじと接触する外面及び前記第2部材の前記ラチェットノッチと噛み合うよう適合された歯を有する内面を有する加圧プレートと、を含む、スペーサ。
(12) 前記止めねじが前記係合部材の単独のねじである、実施態様11に記載のスペーサ。
(13) 前記止めねじがねじ山付きの円筒形の外側表面を有する、実施態様11に記載のスペーサ。
(14) 前記止めねじが、軸線を画定する管状であって、前記軸線に沿って延在する複数個の内部軸方向凹部を備えた、管状である、実施態様11に記載のスペーサ。
(15) 前記止めねじが、遠位端と、前記加圧プレートの対応する首部及び頭部凹部と係合するように前記遠位端から延在する、首部及び頭部延長部と、を含む、実施態様11に記載のスペーサ。
(16) 前記加圧プレートの前記内面が、間に少なくとも1つのノッチを形成する、少なくとも2つの細長い歯をその上に有する、実施態様11に記載のスペーサ。
(17) 前記第1部材が、グラフト材料を挿入するためのグラフト窓部を有する、実施態様11に記載のスペーサ。
(18) 前記第2部材が、グラフト材料を挿入するためのグラフト窓部を有する、実施態様11に記載のスペーサ。
(19) 前記第1及び第2部材の各々が、グラフト材料を挿入するためのグラフト窓部を有する、実施態様11に記載のスペーサ。
(20) 前記第2環の前方部分が、その内側末端部上に、前記第2グラフト窓部を形成するカット部を有する、実施態様19に記載のスペーサ。
Claims (10)
- 2つの椎骨間に挿入するためのスペーサにおいて、前記スペーサが、可変的な軸方向の高さを有すると共に、第1部材と、前記第1部材の内部に案内され、全高を調整するために前記第1部材に対してその軸方向に摺動可能である第2部材と、を含み、
前記第2部材が、外壁と、前記第1部材に面すると共に前記軸方向に延在する、その外壁に提供されたラチェットノッチと、を含み、
前記第1部材が、前記スペーサの前記全高を調整するために前記ラチェットノッチと協働する、係合部材を有する壁を含み、
前記係合部材が、i)止めねじと、ii)前記止めねじと接触する外面及び前記第2部材の前記ラチェットノッチと噛み合うよう適合された歯を有する内面を有する加圧プレートと、を含む、スペーサ。 - 前記止めねじが前記係合部材の単独のねじである、請求項1に記載のスペーサ。
- 前記止めねじがねじ山付きの円筒形の外側表面を有する、請求項1に記載のスペーサ。
- 前記止めねじが、軸線を画定する管状であって、前記軸線に沿って延在する複数個の内部軸方向凹部を備えた、管状である、請求項1に記載のスペーサ。
- 前記止めねじが、遠位端と、前記加圧プレートの対応する首部及び頭部凹部と係合するように前記遠位端から延在する、首部及び頭部延長部と、を含む、請求項1に記載のスペーサ。
- 前記加圧プレートの前記内面が、間に少なくとも1つのノッチを形成する、少なくとも2つの細長い歯をその上に有する、請求項1に記載のスペーサ。
- 前記第1部材が、グラフト材料を挿入するためのグラフト窓部を有する、請求項1に記載のスペーサ。
- 前記第2部材が、グラフト材料を挿入するためのグラフト窓部を有する、請求項1に記載のスペーサ。
- 前記第1及び第2部材の各々が、グラフト材料を挿入するためのグラフト窓部を有する、請求項1に記載のスペーサ。
- 前記第2環の前方部分が、その内側末端部上に、前記第2グラフト窓部を形成するカット部を有する、請求項9に記載のスペーサ。
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- 2008-12-16 AU AU2008338495A patent/AU2008338495B2/en active Active
- 2008-12-16 EP EP08861682A patent/EP2227182A4/en not_active Withdrawn
- 2008-12-16 WO PCT/US2008/086977 patent/WO2009079502A1/en active Application Filing
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CN110769784A (zh) * | 2016-10-25 | 2020-02-07 | 肌肉骨骼科学教育研究所有限公司 | 具有受保护的融合区的植入物 |
CN110769784B (zh) * | 2016-10-25 | 2022-04-05 | 肌肉骨骼科学教育研究所有限公司 | 具有受保护的融合区的植入物 |
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US8241363B2 (en) | 2012-08-14 |
EP2227182A4 (en) | 2013-01-23 |
CA2710104A1 (en) | 2009-06-25 |
AU2008338495A1 (en) | 2009-06-25 |
JP5451635B2 (ja) | 2014-03-26 |
EP2227182A1 (en) | 2010-09-15 |
US20090164017A1 (en) | 2009-06-25 |
WO2009079502A1 (en) | 2009-06-25 |
AU2008338495B2 (en) | 2013-08-29 |
US20120277878A1 (en) | 2012-11-01 |
USRE46261E1 (en) | 2017-01-03 |
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