JP5854565B2 - 移植片、移植装置、移植方法 - Google Patents
移植片、移植装置、移植方法 Download PDFInfo
- Publication number
- JP5854565B2 JP5854565B2 JP2013152326A JP2013152326A JP5854565B2 JP 5854565 B2 JP5854565 B2 JP 5854565B2 JP 2013152326 A JP2013152326 A JP 2013152326A JP 2013152326 A JP2013152326 A JP 2013152326A JP 5854565 B2 JP5854565 B2 JP 5854565B2
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- Prior art keywords
- implant
- graft
- tool
- force
- opening
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- 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.)
- Expired - Fee Related
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- A61F2250/006—Additional features; Implant or prostheses properties not otherwise provided for modular
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Description
・骨組織に開口を設ける;
・圧縮軸が開口軸と本質的に平行して延在するように、開口内に移植片を位置決めする;
・位置決めされた移植片内に、結合入力面を介して圧縮力および機械的振動を結合し、それによって移植片を圧縮し、距離拡大によって開口の側壁に少なくとも局部的に押付け、それとともに熱可塑性材料を側壁と接触している所で少なくとも部分的に液化し、骨組織の構造に押込んで、再凝固後に形状嵌合接続を形成する。
・移植片は少なくとも2つの別個の構成要素からなり、構成要素はその形状により、圧縮力の効果で互いに対して移動する。移動は、圧縮軸に対して平行でも垂直でもないが圧縮軸に対して傾斜して延在する表面に沿って起こる。移植片は、たとえば円錐および/もしくはくさびのシステムとして、または必ずしも熱可塑性材料を備える必要はなく、たとえば熱可塑性材料を備える移植片構成要素の前に開口に入れられるスプレッダ要素を有するシステムとして、設計され得る。断面積の拡大は、移植片構成要素の互いに対する移動によって(たとえばくさびシステム)、または移植片構成要素を互いに対して移動させ、同時にそれらを広げることによって(たとえば円錐システム)のいずれか一方で生じる。
・骨組織に開口を設ける;
・移植片の熱可塑性区域が骨組織と接触するように、骨組織に移植片を位置決めする;
・位置決めされた移植片内に、結合入力面を介して力および機械的振動を結合し、それによって液化可能材料の少なくとも一部を開口の壁と接触している所で液化し、骨組織に押込んで、再凝固後に壁との形状嵌合接続を形成し、力および機械的振動は工具を利用して移植片内に結合され、近位工具側は機械的振動が工具内に結合されるように設計され、遠位工具側は、それを通して機械的振動が移植片内に結合される結合出力面を備え、工具内に結合される力は引張力である。
・接近するのが困難な場所における移植:本発明の第2の局面では、ある状況下で、接近不可能な側からの移植が実行可能となる。
たとえば、工具の結合出力面は「後向きに」、すなわち近位工具側に面している。これは、たとえば結合出力面の法線が引張力の方向とほぼ平行して延在している場合である。
・骨組織に開口を設ける;
・開口内に移植片を位置決めする;
・近位部および遠端部を有する工具を設ける;
・工具を移植片と接触させて位置決めする;
・機械的振動を工具内に結合し、同時に移植片を軸方向に移植片に対して動かし、工具の一部は移植片の内部を動き、それによって移植片を拡張し、移植片を開口の横方向の壁に少なくとも局部的に押付け、拡張および工具から移植片内に結合された機械的振動の影響によって、熱可塑性材料を開口の壁と接触している所で少なくとも部分的液化して液化熱可塑性材料を生じさせ、液化材料を骨組織に押込んで、再凝固後に壁との確実な嵌合接続を形成する。
・圧縮力により第2および第3の構成要素1.12、1.13が広げられるため、第2および第3の構成要素の外側断面積が、およびしたがって移植片全体が拡大する。
・各構成要素は液化不可能なコアを備え得、第2および第3の構成要素のコアは弾性的にまたは塑性的に変形可能である。たとえばチタンからなるコアは、断面のかなりの部分を構成し得、移植片の耐荷力部を形成し得る。
・第1の構成要素は移植後に取出可能であり得る(その場合、これは移植片の一部ではなく、たとえば工具の一部または別個の要素である)。
・構成要素は、予め定められた破断点を介して移植の前に連結され得、これは以下により詳細に説明される。
図4には、図3に係る移植片1が、本発明の第2の局面に対応する構成において示される。この構成では、開口の底の骨組織に力が及ぼされない。移植片に作用する振動および圧縮力は、引張力下にある工具3から移植片内に結合される。図4に係る構成はしたがって、骨組織をトンネル状に貫通して延びる組織開口内での適用例にも好適である。
・工具は移植の場所に残り得る。この実施例は、工具がさらなる機能のために設計されている際に特に有利である。したがって、工具は、たとえば縫合糸、靭帯、腱、別の骨、内部人工器官またはいずれかの他の要素などのさらなる要素を移植片に取付けるために働き得る。工具は、移植物体の機能として公知の実際的にどのような機能についても設計され得る。
・3つの構成要素の代わりに、少なくとも周囲領域において熱可塑性材料を備える単一の構成要素、2つの構成要素または4つ以上の構成要素があり得る。
・図3の実施例に関連して説明された変形例との組合せが可能である。
・図示されるような2つの移植片の代わりに、本方法は単一の移植片のみで、または2つより多い移植片でも実行可能である。
・骨組織の開口の断面および移植片の断面は環状でない。
・工具の厚みの増した遠端部3.7は多くの異なる形状を有し得る。遠端部の最大断面は必ず、移植片の凹部の最小断面より大きく骨組織の開口の断面より小さくなければならない。
・移植処理時に骨組織に固定されるべきさらなる物体または組織片が、工具と移植片との間、または移植片と骨組織の開口の横方向の壁との間に配置され得る。これは、本発明の第3または第1の局面に係る他の実施例にも当てはまる。
・工具3は移植時に移植片に追込まれ、それによって外側断面を拡大する(図22a、図22b)。示される実施例における工具は、工具が移植後に移植片内に固定維持されるように、かかり状の構造を備える。
本発明のすべての局面の図示されるまたは他の実施例に係る移植片、装置および移植方法は、移植片と骨組織との間のしっかりした接続が重要であるさまざまな状況で使用される。移植片を骨粗しょう症の骨組織内にアンカー固定するため、および他の特定的な適用例については、引用によりその内容が本願に援用される公報WO02/069817、WO2004/017857およびWO2005/079696に説明されているようなすべての適用例を参照されたい。
Claims (10)
- 移植片セットであって、
機械的振動を利用して骨組織または他の硬組織の開口内にアンカー固定されるのに好適な移植片を備え、
前記移植片は近位側の端面から前記移植片の中心軸に沿って遠位側に延在し、前記端面は前記中心軸に平行でなく、
前記移植片は、前記中心軸の方向に圧縮可能であり、前記中心軸に沿った圧縮力により、前記移植片の周囲表面と前記中心軸との間の局部的距離が拡大し、
前記移植片は、前記移植片の周囲表面の少なくとも一部を形成する熱可塑性材料をさらに備え、
前記移植片セットは、結合出力面を有する工具(3)をさらに備え、前記結合出力面は、圧縮力(4)および機械的振動(5)を前記端面を介して前記移植片内に伝達するのに好適な前記移植片の前記端面に接触しており、
前記移植片セットは対向要素(31)をさらに備え、前記対向要素は、前記圧縮力に対する反力(51)を前記移植片内に結合するように備えられ、前記反力(51)は、前記対向要素(31)に引張力として作用し、
前記移植片は、前記工具(3)に作用する前記圧縮力(4)および前記対向要素(31)に作用する前記反力(51)の共作用によって圧縮可能である、移植片セット。 - 前記対向要素(31)は、前記工具(3)を貫通する部分を有する、請求項1に記載の移植片セット。
- 前記対向要素は、前記振動(5)および前記圧縮力(4)が前記移植片内に伝達されている間、近位方向に移動するように備えられている、請求項1または請求項2に記載の移植片セット。
- 前記振動(5)および前記圧縮力(4)が前記移植片内に伝達されている間、前記工具(3)が移動しないように設計されている、請求項3に記載の移植片セット。
- 前記端面は、少なくとも部分的には平坦でかつ前記中心軸に対して垂直に方向づけられる、請求項1または請求項2に記載の移植片セット。
- 前記移植片は、少なくとも2つの移植片構成要素を備え、それらは、前記圧縮力により、前記中心軸に対して傾斜して延在する移動表面に沿って互いに移動可能に設計されている、請求項1または請求項2に記載の移植片セット。
- 前記移植片は広げられ得る、請求項1または請求項2に記載の移植片セット。
- 移植片が圧縮力の効果によって座屈する座屈場所を備える、請求項7に記載の移植片セット。
- 座屈場所は、機械的振動の効果によって軟化または液化可能な脆弱な点である、請求項8に記載の移植片セット。
- 前記移植片は、骨組織または他の硬組織内の縫合線を固定する、請求項1または請求項2に記載の移植片セット。
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JP2013152326A Expired - Fee Related JP5854565B2 (ja) | 2006-09-20 | 2013-07-23 | 移植片、移植装置、移植方法 |
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EP (3) | EP3311758B1 (ja) |
JP (2) | JP5329414B2 (ja) |
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EP3311758A1 (en) | 2018-04-25 |
US8870933B2 (en) | 2014-10-28 |
WO2008034277A2 (en) | 2008-03-27 |
US20150012095A1 (en) | 2015-01-08 |
EP3311758B1 (en) | 2019-08-21 |
US20080109080A1 (en) | 2008-05-08 |
US20160367302A1 (en) | 2016-12-22 |
ES2692649T3 (es) | 2018-12-04 |
US9445888B2 (en) | 2016-09-20 |
JP2014004389A (ja) | 2014-01-16 |
JP5329414B2 (ja) | 2013-10-30 |
EP3326544A1 (en) | 2018-05-30 |
EP3326544B1 (en) | 2020-04-08 |
US9801673B2 (en) | 2017-10-31 |
JP2010504119A (ja) | 2010-02-12 |
WO2008034277A3 (en) | 2008-12-31 |
EP2063961A2 (en) | 2009-06-03 |
EP2063961B1 (en) | 2018-03-21 |
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