JP2013528448A - 骨固定において使用するためのアンカ・イン・アンカシステム - Google Patents
骨固定において使用するためのアンカ・イン・アンカシステム Download PDFInfo
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- JP2013528448A JP2013528448A JP2013514143A JP2013514143A JP2013528448A JP 2013528448 A JP2013528448 A JP 2013528448A JP 2013514143 A JP2013514143 A JP 2013514143A JP 2013514143 A JP2013514143 A JP 2013514143A JP 2013528448 A JP2013528448 A JP 2013528448A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
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- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
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- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
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Abstract
Description
本願は、2009年12月4日に出願された米国特許出願第12/631293号明細書の一部継続出願である。米国特許出願第12/631293号明細書は、2008年12月5日に出願された米国特許出願第61/120138号明細書の利益を請求する。米国特許出願第12/631293号明細書及び米国特許出願第61/120138号明細書は、引用により本明細書に全体が記載されたものとする。
本開示は、概して、整形外科、特に固定システム及び固定システムを使用するための関連する外科的方法及び手順に関する。
骨及び骨断片の整復のための様々な固定装置が公知である。例えば、人体における長骨の骨折を整復するために、外部骨固定装置、若しくは外部フィクサが使用される。骨折を整復するために、骨プレートのような内部骨固定装置も一般的に使用される。椎間板を再配置するため、隣接する椎骨を融合若しくは整合させるため、及び他の脊椎組織に対応するため、椎間インプラント、脊椎ロッド及び同様のものを含む脊椎固定装置が使用される。
アンカ・イン・アンカ固定システムは、第1のシャフト及び第1のヘッドを含む第1の骨アンカを有し、第1の軸は、第1の長手方向シャフト軸線に沿って延びておりかつ下に位置する構造物に取り付けられるよう構成されており、第1のヘッドは、ボア軸線に沿って第1のヘッドを貫通したボアを形成しており、ボア軸線と第1の長手方向シャフト軸線とは鋭角を形成している。アンカ・イン・アンカ固定システムは、さらに、第2のシャフト及び第2のヘッドを含む第2の骨アンカを有し、第2のシャフトは、第2の長手方向シャフト軸線に沿って延びておりかつ下に位置する構造物に取り付けられるよう構成されており、第2の骨アンカはボアに挿入されるよう構成されている。
前記概要、及び本出願の好適な実施の形態の以下の詳細な説明は、添付の図面に関連して読んだ場合に、より理解されるであろう。アンカ・イン・アンカシステムを説明するために、図面には好適な実施の形態が示されている。しかしながら、本出願は、図面に示された配列及び手段そのものに限定されない。
ある用語は、以下の説明において便宜のためだけに用いられ、限定するものではない。"右"、"左"、"上"及び"下"という言葉は、参照されている図面におけるものである。"内"及び"外"という言葉は、装置及び装置の指定された部分の幾何学的中心に向かう方向及びこの幾何学的中心から離れる方向をそれぞれ表す。"前"、"後"、"上"、"下"という言葉、及び関連する言葉及び/又はフレーズは、参照されている人体における好適な位置及び向きを表し、限定しようとするものではない。用語は、上に挙げた言葉、それらの派生語及び同じ由来の言葉を含む。
Claims (21)
- 椎骨固定システムであって、1つ以上のアンカ・イン・アンカシステムを備え、各アンカ・イン・アンカシステムが、
第1の目標位置に挿入されるよう構成された第1の骨アンカであって、第1のヘッドを有し、該第1のヘッドは、ボア軸線に沿って前記第1のヘッドを貫通したボアを形成している、第1の骨アンカと、
前記ボアを通って第2の目標位置に挿入されるよう構成された第2の骨アンカと、を備えることを特徴とする、椎骨固定システム。 - 前記第2の骨アンカは、少なくとも部分的に前記第1のヘッド内に配置されるよう構成された第2のヘッドを有する、請求項1記載の椎骨固定システム。
- 前記第1の目標位置と、前記第2の目標位置とのそれぞれは、1つ以上の椎体に形成されている、請求項1記載の椎骨固定システム。
- 前記第1の目標位置は、椎弓根、椎弓板、椎間関節、棘突起、同種移植片、自己移植片、合成移植片及び金属移植片のうちの少なくとも1つを含み、
前記第2の目標位置は、椎弓根、椎弓板、椎間関節、棘突起、同種移植片、自己移植片、合成移植片及び金属移植片のうちの少なくとも1つを含む、請求項3記載の椎骨固定システム。 - 前記システムは、さらに、前記1つ以上のアンカ・イン・アンカシステムに取り付けるよう構成された補助的な骨固定部材を備える、請求項1記載の椎骨固定システム。
- 前記補助的な骨固定部材は、椎骨間インプラントを含む、請求項5記載の椎骨固定システム。
- 前記椎骨間インプラントの本体は、該本体に形成されたボアを有し、該ボアは、前記第1の骨アンカ及び前記第2の骨アンカのうちの少なくとも一方を前記ボアに収容するよう構成されている、請求項6記載の椎骨固定システム。
- 前記椎骨間インプラントの本体は、アンカプレートに結合されるよう構成されており、該アンカプレートは、前記1つ以上のアンカ・イン・アンカシステムを支持するよう構成されている、請求項6記載の椎骨固定システム。
- インプラントの本体は、該本体に形成された1つ以上の溝を有し、該溝は、前記第1の骨アンカ及び前記第2の骨アンカのうちの少なくとも一方を収容するよう構成されている、請求項6記載の椎骨固定システム。
- 前記補助的な骨固定部材は、棘間スペーサを含む、請求項5記載の椎骨固定システム。
- 前記棘間スペーサは、中空の円筒状の本体を有し、該本体は、該本体に形成された複数の開口を有し、該開口は、前記1つ以上のアンカ・イン・アンカシステムを前記開口に配置させるよう構成されている、請求項10記載の椎骨固定システム。
- 前記複数の開口のうちの少なくとも1つは、前記第1の骨アンカのヘッドを前記開口に収容するよう構成されている、請求項11記載の椎骨固定システム。
- 前記補助的な骨固定部材は、拡張及び収縮するよう構成されたプレートを含み、該プレートは、複数の開口を有し、該複数の開口は、対応する複数の、前記1つ以上のアンカ・イン・アンカシステムを前記開口に収容するよう構成されている、請求項5記載の椎骨固定システム。
- アンカ・イン・アンカ椎骨固定の方法であって、
第1のアンカであって、ボア軸線に沿って前記第1のアンカを貫通したボアを有するヘッドを備えた第1のアンカを、第1の椎骨骨セグメントに挿入し、
第2のアンカを前記第1のアンカのヘッドを通って第2の椎骨骨セグメントに挿入することを含み、
前記第2のアンカを挿入することが、前記第1の骨セグメントと前記第2の骨セグメントとの固定を生ぜしめることを特徴とする、アンカ・イン・アンカ椎骨固定の方法。 - 前記方法は、さらに、前記ボア軸線が前記第2の椎骨骨セグメントに前記第2のアンカを挿入するための軌道を形成するように、前記第1のアンカを調節することを含む、請求項14記載の方法。
- 前記第1のアンカ及び前記第2のアンカのうちの少なくとも一方は、下に位置する骨に挿入されるよう構成された骨アンカである、請求項14記載の方法。
- 前記第1の椎骨骨セグメント及び前記第2の椎骨骨セグメントのそれぞれは、1つ以上の椎体に形成されている、請求項14記載の方法。
- 前記第1の椎骨骨セグメントは、椎弓根、椎弓板、椎間関節、棘突起、同種移植片、自己移植片、合成移植片及び金属移植片のうちの少なくとも1つを含み、
前記第2の椎骨骨セグメントは、椎弓根、椎弓板、椎間関節、棘突起、同種移植片、自己移植片、合成移植片及び金属移植片のうちの少なくとも1つを含む、請求項17記載の方法。 - 前記方法は、さらに、
第3のアンカであって、ボア軸線に沿って前記第3のアンカを貫通したボアを有するヘッドを備える第3のアンカを、第3の椎骨骨セグメントに挿入し、
第4のアンカを前記第3のアンカのヘッドを通って第4の椎骨骨セグメントに挿入し、
前記第1の骨アンカ及び前記第3の骨アンカのヘッドにプレートを取り付けることを含む、請求項14記載の方法。 - 前記プレートは、前記第1のアンカ及び前記第3のアンカのヘッドを収容するよう構成された一対の開口を有する、請求項19記載の方法。
- 前記プレートは、拡張及び収縮するよう構成されている、請求項19記載の方法。
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