JP2011528956A - モジュール化された髄核補綴物 - Google Patents
モジュール化された髄核補綴物 Download PDFInfo
- Publication number
- JP2011528956A JP2011528956A JP2011520202A JP2011520202A JP2011528956A JP 2011528956 A JP2011528956 A JP 2011528956A JP 2011520202 A JP2011520202 A JP 2011520202A JP 2011520202 A JP2011520202 A JP 2011520202A JP 2011528956 A JP2011528956 A JP 2011528956A
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- JP
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- Prior art keywords
- disk member
- disk
- wall
- disc
- tool
- 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
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- A61F2250/0015—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 density or specific weight
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- A61F2250/0018—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 elasticity, stiffness or compressibility
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- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
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Abstract
Description
本出願は、2008年7月23日に出願された米国仮特許出願番号61/135623の利益を受けることを請求するものであり、こうして参照することでその全体がここに導入される。
この発明は、人間用のプロステーシス(prostheses)に係わり、より詳細には、脊椎の円盤状のプロステーシス、もしくは背骨の椎間板人工器官(spinal
disc endoprostheses)と称されるものに関する。また、本発明は外科用工具及び患者に椎間板人工器官を導入する準備手続き及び該人工器官を患者の背骨に移植する為の手続きに関する。
脊椎骨間の又は背骨の椎間板は、隣接する椎骨間にあり、互い違いに上下に積み重なった背骨を連結するものである。各椎間板は繊維軟骨性の継ぎ手を形成し、椎骨の僅かな動きを許容し、椎骨の互いに保持する靱帯として作用する。個々の椎間板は、伸び及び屈曲のような椎骨の動きをごく僅かに許容するが、幾つかの椎間板が組み合わさることでかなりな動きが可能となる。衝撃を緩和する機能を提供するほかに、これらの椎間板は、椎骨全体又はその部分に収縮、曲げ及びねじれを許容する。
and Smith & Robinson)が、頸部の悪化した椎間板の病気及び、関連する脊柱、脊髄及び神経根の不調の処置として、頸椎に前方から外科的にアプローチする方法を一般化した。これらの外科手術は、椎間板を除去し、その後に骨移植により椎体間の連結を行う処置を含むものである。ロビンソンは、外科的な連結の後、連結したセグメントにおいて骨瘤(骨の突起)の再吸収が生じたと記している(Robinson,
R.A: The Results of Anterior Interbody Fusion of the Cervical Spine, J. Bone
Joint Surge., 440A; 1569-1586, 1962)。しかし、この連結の直接の結果として、連結されたセグメントの上下の階層の、未連結の脊柱セグメントが急速に悪化することが徐々に明らかになってきた。このことから、幾人かの外科医は、患者の首の後部から、椎体を連結すること無しに、椎間板の除去のみを行うようになった。しかし、より低い部分の背部についての手術を含んだ手術において、椎間板ヘルニアの症状に対する初期の処置として、結合を行わない椎間板の除去がより普通のものとなるにつれ、椎間板の除去のレベルにおける急速な悪化は例外と言うよりもむしろ通例であるようになった。除去された椎間板の上下のレベルにおける椎間板の病気のより速い悪化は、起こりうるしまた起こっている。
et al)の米国特許第4917704及び4955908号では、堅い材料からなる人工椎間板が開示されている。
本発明は、椎間板内部人工器官に係わり、関連する椎間円板の交換方法及び工具に関する。内部人工器官は丸みを帯びた端部壁を有する円盤状の外観を持ち、横方向およびねじり方向の動きを制限することできる“陰陽”の形をしたミラーイメージの部分から形成された部分本体を有する。内部人工器官は、その強靱性において変化する一つ以上の材料から製造することが出来るが、好ましくは、均一な強靱性と密度を持っていることが望ましい。内部人工器官の材料は、整形外科用金属合金、生体親和性を有するセラミック、生体親和性を有するシリコンエラストマー及びこれらの組み合わせなどからなる生体親和性を有する材料を含むものである。
内壁肩部145及び147は、第2ディスク部材上先端表面115から、第2ディスク部材テール壁161の上後端表面109までほぼ伸延している。上後端表面上の内凸壁肩部145に近接して、内凹壁肩部147が外周を外肩部117に移行する形で伸延している。
image views)により椎間板除去が十分であるか否かが検証される。薄膜状の湿潤剤が腰椎レベルの椎骨の棘状突起間に挿入され、環状切除術によるモジュール化された髄核部品の挿入を助ける。
monocryl)関節間技術を使用して、複数層において閉じられる。乾いた無菌ガーゼが付けられ、テープ又はオプサイトで固定される。次いで、患者は注意深く仰向け位置にされ、ストレッチャーで回復室又は整形外科ベッドに搬送される。
Claims (23)
- 椎間板の線維輪内に挿入する内部人工器官であって、該内部人工器官は、
横軸と縦軸を持った全体が円盤状の組立体であり、
該円盤状の組立体は、共通の境界にそって一致する形で互いに係合する同一の複数の本体から形成されており、
前記円盤状の組立体は、上部及び下部凸表面を有し、
前記上部及び下部凸表面は、人間の1対の椎骨に対応した曲率を有する、
ことを特徴とする、内部人工器官。 - 前記本体は、互いに結合可能に形成されており、前記線維輪内に移植することで、該線維輪内に装着される、
ことを特徴とする、請求項1記載の内部人工器官。 - 前記本体は、更に、一定の曲率を有する外周壁及び、前記外周壁の一端に接続する少なくとも一つの凹部及び前記外周壁の他端に接続する少なくとも一つの隣接する凸部を有する内壁を有する、
ことを特徴とする、請求項1記載の内部人工器官。 - 前記本体は、更に、締め具を受け入れることが出来る少なくとも一つの溝を有する
ことを特徴とする、請求項1記載の内部人工器官。 - 前記締め具は、縫合ワイヤ及びねじからなるグループから選択される、
ことを特徴とする、請求項4記載の内部人工器官。 - 前記本体は、更に、挿入工具を受け入れることの出来る少なくとも一つの穴を有する、
ことを特徴とする、請求項1記載の内部人工器官。 - 前記内壁は、更に、少なくとも一つの突起及び、該突起を受け入れることの出来る少なくとも一つの穴を有する、
ことを特徴とする、請求項3記載の内部人工器官。 - 前記少なくとも一つの穴は、前記同一の本体の内の一つに形成されている、
ことを特徴とする、請求項7記載の内部人工器官。 - 前記少なくとも一つの突起は、前記同一の本体の内の一つに形成されている、
ことを特徴とする、請求項7記載の内部人工器官。 - 椎間板の線維輪内に挿入する内部人工器官であって、該内部人工器官は、
全体が円盤状の物であり、該円盤状の物は、
第1ディスク部材を有し、該第1ディスク部材は、一定の曲率半径を有する外壁及び、前記外壁の一端に接続する少なくとも一つの凹部及び前記第1ディスク部材の外壁の他端に接続する少なくとも一つの隣接する凸部を有する内壁を有し、前記第1ディスク部材の内壁は、突起及び穴のグループ化から選択される少なくとも一つの係合部材を有し、
前記円盤状の物は、更に、
第2ディスク外周部を有する第2ディスク部材を有し、該第2ディスク外周部は、一定の曲率半径を有する外壁及び、前記外壁の一端に接続する少なくとも一つの凹部及び前記第2ディスク部材の外壁の他端に接続する少なくとも一つの隣接する凸部を有する内壁を有し、前記第2ディスク部材の内壁は、突起及び穴のグループ化から選択される少なくとも一つの係合部材を有し、
前記第1ディスク部材の少なくとも一つの係合部材と第2ディスク部材の少なくとも一つの係合部材は異なり、更に、前記第1及び第2のディスク部材は、縫合ワイヤ及びねじのグループから選択される少なくとも一つの締め具により、共通の境界に沿って一致する形で互いに係合固定自在に設けられており、前記円盤状の組立体は、更に、上部凸表面及び下部凸表面を有し、それら上部凸表面及び下部凸表面は、人間の1対の椎骨に対応した曲率を有する、
ことを特徴とする、内部人工器官。 - 椎間板部材を挿入する外科工具であって、該外科工具は、
一方にハンドルが設けられ、他方に細長いシャフトが設けられた本体を有し、
前記シャフトは、前記本体に装着される本体端及び前記本体端とは反対側の工具ヘッド端を有し、前記工具ヘッド端は、少なくとも一つの中央爪及び少なくとも一つの側方爪を有し、それら爪で椎間板部材をその中に押圧保持することが出来る開口を形成することが出来る、
ことを特徴とする、外科工具。 - 少なくとも一つの縫合ケーブル溝が前記工具ヘッド内に形成されている、
ことを特徴とする、請求項11記載の外科工具。 - 前記少なくとも一つの縫合ケーブル溝は、前記少なくとも一つの中央爪内に配置されている、
ことを特徴とする、請求項12記載の外科工具。 - 前記少なくとも一つの縫合ケーブル溝は、前記少なくとも一つの側方爪に配置されている、
ことを特徴とする、請求項12記載の外科工具。 - 前記少なくとも一つの縫合ケーブル溝は、前記少なくとも一つの中央爪内及び前記少なくとも一つの側方爪内に配置されている、
ことを特徴とする、請求項12記載の外科工具。 - 前記外科工具は、更に、
ワイヤケーブルに操作自在に接続された椎間板挿入物を有し、前記ワイヤケーブルの一部は、前記少なくとも一つの中央爪内に配置された少なくとも一つの溝内に配置され、更に、前記ワイヤケーブルの一部は、前記少なくとも一つの側方爪内に配置された少なくとも一つの溝内に配置されている、
ことを特徴とする、請求項15記載の外科工具。 - 前記外科工具は、更に、
ワイヤケーブルに操作自在に接続された椎間板部材挿入物を有し、前記ワイヤケーブルの一部は、前記少なくとも一つの中央爪内に配置された少なくとも一つの溝内に配置され、更に、前記ワイヤケーブルの一部は、前記少なくとも一つの側方爪内に配置された少なくとも一つの溝内に配置され、
前記外科工具は、更に、前記椎間板部材挿入物を解放するための操作自在に接続された部材を有する、
ことを特徴とする、請求項16記載の外科工具。 - 前記椎間板挿入物を解放するための前記操作自在に接続された部材は、レバー、ノブ及びトリガーのグループから選択される、
ことを特徴とする、請求項17記載の外科工具。 - 椎間板部材を挿入するための外科工具であって、該外科工具は、
ハンドルと、該ハンドルを貫通して伸延する、中央穴が設けられた細長い中空シャフトを有する工具本体を有し、
前記シャフトは、前記ハンドルの開口に装着されたハンドル端部と該ハンドル端部の反対側の工具ヘッド端部を有し、前記工具ヘッド端部は、前記椎間板部材の少なくとも一つの湾曲した表面を受け入れることの出来る面板を有する、
ことを特徴とする外科工具。 - 前記工具ヘッド端部は、更に、前記中央穴のどちらかの側に形成された少なくとも一つの開口を有し、該開口は、前記シャフトの全長に渡り伸延する少なくとも一つの細長い溝と連通している、
ことを特徴とする、請求項19記載の外科工具。 - 前記外科工具は、更に、内部に取り外し可能なディスク挿入ロッドを、前記シャフトの全長を超えて伸延する形で有し、前記ディスク挿入ロッドは、ロッドシャフト、ロッドカラー及び前記ディスク部材の穴に挿入するための少なくとも一つのガイドピンを有する、
ことを特徴とする、請求項19記載の外科工具。 - 前記外科工具は、更に、内部に取り外し可能なねじドライバ組立体を、前記シャフトの全長を超えて伸延する形で有し、前記ねじドライバ組立体は、ねじドライバシャフト、ねじドライバカラー、ねじドライバヘッド及び、前記ディスク部材のねじ穴に挿入するためのねじ頭挿入物を有する、
ことを特徴とする、請求項19記載の外科工具。 - 椎間板移植キットであり、該椎間板移植キットは、
縫合ケーブルにより相互に接続された、1対の相補的な形状を有するディスク部材を有し、前記ディスク部材は、髄核が除去された後、人体の2つの椎骨間の椎間板線維内に装着し得る形状及び寸法を有する移植物であり、
第1のディスク部材を配置する第1移植物配置工具を有し、前記第1移植物配置工具はベース、該ベースに接続されたシャフト、前記第1移植物をその間に保持するために前記シャフトから伸延した1対の間隔をあけたアーム及び、前記アームに接続され、前記第1移植物を前記第1移植物配置工具から解放するための解放手段を有し、
第2のディスク部材を配置する第2移植物配置工具を有し、前記第2移植物配置工具はベース、該ベース内に設けられたシャフト、前記シャフトは中央穴を有し、また、前記ベースの全長を超えて両側に伸延しており、前記シャフトはその一端に、前記第2のディスク部材の外壁の少なくとも一部に適合する形状を有するシャフトヘッド面が形成されたシャフトヘッドを有しており、前記シャフトヘッド面は、前記中央穴の両側に、対となった間隔の開いたタブを有し、更に前記シャフトヘッドは、縫合ケーブルを受け入れる少なくとも一つの溝用の少なくとも一つの開口を有し、
前記第2工具の中央穴内に挿入するよう形成されたシャフトを有する挿入ロッドを有し、前記ロッドは、一端にロッドヘッドを、他端に、前記第2のディスク部材の第1の穴に挿入するためのロッドガイドピンを有し、
前記挿入ロッドを外す際に、前記第2の工具の中央穴内に挿入されるねじドライバシャフトが設けられたねじドライバ組立体を有し、前記ねじドライバシャフトは、一端にドライバヘッドを、他端に、前記第2のディスク部材の第2の穴にねじを挿入するためのねじ頭を有し、
ディスク部材が線維輪内に配置された後、前記縫合ケーブルの引っ張りによる引き込みに反応して、前記部材が椎間円板内空間内で組みたてられるようにして構成した椎間板移植キット。
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- 2009-07-23 CA CA2731048A patent/CA2731048C/en not_active Expired - Fee Related
- 2009-07-23 JP JP2011520202A patent/JP5462874B2/ja not_active Expired - Fee Related
- 2009-07-23 US US12/508,356 patent/US8795375B2/en active Active
- 2009-07-23 KR KR1020117004156A patent/KR101614561B1/ko active IP Right Grant
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Also Published As
Publication number | Publication date |
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EP2303196B1 (en) | 2018-10-24 |
EP2303196A1 (en) | 2011-04-06 |
IL210578A (en) | 2015-08-31 |
CA2731048C (en) | 2016-11-29 |
WO2010011849A1 (en) | 2010-01-28 |
KR20110050462A (ko) | 2011-05-13 |
CA2731048A1 (en) | 2010-01-28 |
KR101614561B1 (ko) | 2016-04-21 |
EP2303196A4 (en) | 2012-07-04 |
IL210578A0 (en) | 2011-03-31 |
JP5462874B2 (ja) | 2014-04-02 |
US8795375B2 (en) | 2014-08-05 |
US20100023128A1 (en) | 2010-01-28 |
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