JP2021176518A - 椎弓根ベースの椎間板内固定装置および方法 - Google Patents
椎弓根ベースの椎間板内固定装置および方法 Download PDFInfo
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Abstract
Description
この出願は、2020年4月7日の米国特許出願第16/842285号の一部継続出願であり、すべての目的のためにその全体が参照により本明細書に組み込まれる。
Claims (20)
- 下椎骨および上椎骨を安定化するためのインプラントであり、前記インプラントが、
近位端から遠位端まで延在する本体と、前記本体の前記遠位端に接続された回動可能なヘッドと、前記回動可能なヘッドをインライン位置と横断位置との間で移動させるためのアクチュエータと、を含み、前記インプラントが、前記下椎骨の椎弓根を通して前記上椎骨に挿入されるように構成されている、インプラント。 - 前記本体が形状記憶材料で作製されており、前記本体が湾曲した形状記憶向きおよび一時的に真っ直ぐな向きを有する、請求項1に記載のインプラント。
- 前記本体が、第1の半分および第2の半分を含む、請求項1に記載のインプラント。
- 前記第1の半分および前記第2の半分が、互いに独立してスライドすることが許容される、請求項3に記載のインプラント。
- 前記第1の半分が、1つ以上の雄部分を含み、前記第2の半分が、前記第1の半分の前記1つ以上の雄部分を受容するように構成されている1つ以上の雌部分を含む、請求項4に記載のインプラント。
- 前記雄部分が、互いに離れる方向に延在し、前記第2の半分の2つの対応する対向する窪みの第1のセット内に適合するように構成されている2つの対向する突起の第1のセットを含み、前記第2の半分が、互いに向かって延在し、前記第1の半分の前記雄部分内の2つの対応する対向する窪みの第2のセット内に適合するように構成されている2つの対向する突起の第2のセットを含む、請求項5に記載のインプラント。
- 前記アクチュエータが前記本体の前記第1の半分を押すと、前記第1の半分の反対側の端部が、前記回動可能なヘッドを押し、それにより、前記ヘッドを回動させる、請求項3に記載のインプラント。
- 前記ヘッドが前記横断位置に完全に回動すると、前記アクチュエータが、前記第1の半分および前記第2の半分の互いに対する移動を防止し、それにより、前記本体の剛性を増加させる、請求項7に記載のインプラント。
- 前記アクチュエータが止めスクリューである、請求項1に記載のインプラント。
- 下椎骨および上椎骨を安定化させるための方法であって、前記方法が、
患者の脊椎に後方からアクセスすることと、
前記下椎骨の椎弓根にインプラントを挿入することであって、前記インプラントが、互いに対してスライド可能である第1の半分および第2の半分を有する本体と、前記本体に接続された回動可能なヘッドと、前記回動可能なヘッドを移動させるように構成されているアクチュエータと、を有し、前記インプラントが、インライン向きにおいて前記回動可能なヘッドで挿入される、挿入することと、
前記下椎骨の椎体に前記インプラントを挿入することと、
前記上椎骨の椎体に前記インプラントを挿入することであって、前記インプラントが、前記下椎骨と前記上椎骨との間の椎間板または椎間板腔を横断する、挿入することと、
前記回動可能なヘッドを横向きに移動させ、それによって下椎骨と上椎骨を固定することと、を含む方法。 - 前記本体が、形状記憶材料から構成されている、請求項10に記載の方法。
- 前記インプラントを真っ直ぐな展開管に引き込むことで、前記本体が前記管内で真っ直ぐになるようにすることと、前記インプラントを前記展開管から展開することであって、前記本体が、湾曲した形状に戻る、展開することと、をさらに含む、請求項11に記載の方法。
- 前記回動可能なヘッドを移動させることが、前記アクチュエータを作動させて、前記アクチュエータが前記本体の前記第1の半分を押して、前記第1の半分が前記回動可能なヘッドを押し、それにより、前記ヘッドを回動させるようにすることを含む、請求項10に記載の方法。
- 前記ヘッドが完全に横向きに回動すると、前記アクチュエータが、前記第1の半分および前記第2の半分の互いに対する移動を防止し、それにより、前記本体の剛性を増加させる、請求項13に記載の方法。
- 下椎骨および上椎骨を安定化するためのインプラントであり、前記インプラントが、
近位端から遠位端まで延びる内側コアと、前記内側コア上に位置決めされた外側セグメント化シースと、前記外側セグメント化シースを圧縮するように構成されているナットと、を含み、前記インプラントは、前記下椎骨の椎弓根を通して前記上椎骨に挿入されるように構成されている、インプラント。 - 前記内側コアが形状記憶材料で作製されており、前記内側コアが湾曲した形状記憶向きおよび一時的に真っ直ぐな向きを有する、請求項15に記載のインプラント。
- 前記セグメント化シースが複数のリンクを含み、前記複数のリンクが、概して線形構成または前記内側コアの形状を模倣するために湾曲した構成で配置されるように構成されている、請求項15に記載のインプラント。
- 前記内側コアからの前記セグメント化シースの分解を防ぐために、近位端キャップおよび遠位端キャップをさらに含む、請求項15に記載のインプラント。
- 前記近位端キャップが、前記ナットを保持するように構成されている複数の外ねじ山を含む、請求項18に記載のインプラント。
- 前記ナットが遠位に前方に移動し、前記セグメント化シースに当接するときに、前記セグメント化シースが前記ナットと前記遠位端キャップとの間で締め付けられ、それにより、前記外側セグメント化シースをロックする、請求項19に記載のインプラント。
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US20080033432A1 (en) * | 2005-02-15 | 2008-02-07 | Hatch Medical, L.L.C. | Percutaneous spinal stabilization device and method |
JP2008539029A (ja) * | 2005-04-27 | 2008-11-13 | グローバス メディカル インコーポレイティッド | 経皮的脊椎固定システム |
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