JP6979002B2 - 拡張可能な椎間インプラント - Google Patents
拡張可能な椎間インプラント Download PDFInfo
- Publication number
- JP6979002B2 JP6979002B2 JP2018210509A JP2018210509A JP6979002B2 JP 6979002 B2 JP6979002 B2 JP 6979002B2 JP 2018210509 A JP2018210509 A JP 2018210509A JP 2018210509 A JP2018210509 A JP 2018210509A JP 6979002 B2 JP6979002 B2 JP 6979002B2
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- Prior art keywords
- actuator
- anterior
- inclined surface
- screw
- end plate
- Prior art date
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- 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
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
- A61F2/447—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
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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
- A61F2/02—Prostheses implantable into the body
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- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
- A61F2/4425—Intervertebral or spinal discs, e.g. resilient made of articulated components
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
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- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
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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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- A61F2/02—Prostheses implantable into the body
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- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
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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
- A61F2/02—Prostheses implantable into the body
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- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
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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
- A61F2/02—Prostheses implantable into the body
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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
- A61F2/02—Prostheses implantable into the body
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- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
- A61F2/4425—Intervertebral or spinal discs, e.g. resilient made of articulated components
- A61F2002/443—Intervertebral or spinal discs, e.g. resilient made of articulated components having two transversal endplates and at least one intermediate component
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- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- 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
- A61F2/02—Prostheses implantable into the body
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- A61F2/46—Special tools for implanting artificial joints
- A61F2/4603—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2002/4625—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof with relative movement between parts of the instrument during use
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- A—HUMAN NECESSITIES
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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
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools for implanting artificial joints
- A61F2/4603—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2002/4625—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof with relative movement between parts of the instrument during use
- A61F2002/4627—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof with relative movement between parts of the instrument during use with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument
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- Veterinary Medicine (AREA)
- Public Health (AREA)
- Heart & Thoracic Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Cardiology (AREA)
- Vascular Medicine (AREA)
- Transplantation (AREA)
- Oral & Maxillofacial Surgery (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Prostheses (AREA)
Description
本開示は、椎間インプラントを挿入することによって脊椎の隣接する椎骨を安定化させることに関し、更に具体的には、高さおよび/または傾斜度が調整可能な椎間インプラントと関連方法とに関する。
[背景技術]
[発明の概要]
[図面の簡単な説明]
[発明を実施するための形態]
Claims (18)
- 関節の骨を治療的に分離させるためのインプラントであって、
前端部と後端部との間に延在する第一端板であって、骨係合面を有し、前記骨係合面の裏面側に、少なくとも一つの第一前傾斜面と、少なくとも一つの第一後傾斜面とを有する第一端板と、
前端部と後端部との間に延在する第二端板であって、骨係合面を有し、前記骨係合面の裏面側に、少なくとも一つの第二前傾斜面と、少なくとも一つの第二後傾斜面とを有する第二端板と、
第一端板と第二端板との間に位置付けされた後方アクチュエータであって、前記少なくとも一つの第一後傾斜面に対向して位置決めされるよう構成された、対応する数の第一ガイディング傾斜面と、前記少なくとも一つの第二後傾斜面に対向して位置決めされるよう構成された、対応する数の第二ガイディング傾斜面とを有する後方アクチュエータと、
各第一ガイディング傾斜面に旋回接続され、前記それぞれの少なくとも一つの第一後傾斜面と摺動係合する第一旋回部材と、各第二ガイディング傾斜面に旋回接続され、前記それぞれの少なくとも一つの第二後傾斜面と摺動係合する第二旋回部材と、
前記第一端板と第二端板との間に位置付けされた前方アクチュエータであって、前記少なくとも一つの第一前傾斜面に対向して位置決めされるよう構成された、対応する数の第三ガイディング傾斜面と、前記少なくとも一つの第二前傾斜面に対向して位置決めされるよう構成された、対応する数の第四ガイディング傾斜面とを有する前方アクチュエータと、
各第三ガイディング傾斜面に旋回接続され、前記それぞれの少なくとも一つの第一前傾斜面に摺動係合する第三旋回部材と、各第四ガイディング傾斜面に旋回接続され、前記それぞれの少なくとも一つの第二前傾斜面に摺動係合する第四旋回部材と、
前記後方アクチュエータと前記前方アクチュエータとの間に延在するアクチュエータアセンブリであって、選択的に、前記後方アクチュエータと前記前方アクチュエータを同時に移動させるか、後方アクチュエータを前記前方アクチュエータとは別に移動させるか、または、前記前方アクチュエータを前記後方アクチュエータとは別に移動させるよう構成されたアクチュエータアセンブリと、を備えるインプラント。 - 前記第一および第二端板のうちの少なくとも一つが、前記第一端板と第二端板との間の移植片チャンバ内への貫通通路を画定する、請求項1に記載のインプラント。
- 前記第一および第二端板のうちの少なくとも一つが、前記インプラントを前記関節の骨に固定するために締結具が通過し得る少なくとも一つの貫通穴を含む、請求項1に記載のインプラント。
- 前記締結具が骨スクリューまたは骨アンカーである、請求項3に記載のインプラント。
- 前記第一および第二端板のうちの少なくとも一つを通り、身体組織内へ至る締結具の後退を予防するよう構成されたブロッキング機構を更に含む、請求項1に記載のインプラント。
- 前記第一端板が、前記骨係合面の裏面側に二つの前記第一前傾斜面と二つの前記第一後傾斜面を有し、前記第二端板が、前記骨係合面の裏面側に二つの前記第二前傾斜面と二つの前記第二後傾斜面を有する、請求項1に記載のインプラント。
- 各前傾斜面および後傾斜面がそれぞれ、それに沿って延在する溝を有し、各旋回部材が、それぞれの溝に係合する溝係合フランジを有し、前記それぞれの傾斜面に対して前記各旋回部材の分離を防止する、請求項1に記載のインプラント。
- 前記アクチュエータアセンブリが、
後端部と前端部との間に延在し、第一雄ねじのセット、第二雄ねじのセットおよびフランジを有するアクチュエータスクリューであって、前記第一雄ねじのセットは、前記フランジよりも前記後端部側に位置し、前記第二雄ねじのセットは前記フランジよりも前記前端部側に位置し、前記第一および第二雄ねじのセットが反対巻き(oppositely handed)であり、前記アクチュエータスクリューの前記後端部が、前記後方アクチュエータの貫通通路を貫通し、螺合するアクチュエータスクリューと、
後端部と前端部との間に延在し、貫通通路が前記後端部から前記前端部まで延在し、前記貫通通路内で雌ねじを画定し、前記雌ねじが前記第二雄ねじのセットに螺合したアクチュエータナットであって、前記アクチュエータナットが前記前方アクチュエータに対して軸方向に固定されるが、それに対して回転可能であるように、前記前方アクチュエータを貫通するアクチュエータナットとを含む、請求項1に記載のインプラント。 - 前記アクチュエータスクリューの前記後端部が、前記第一および第二端板に対して軸方向に固定される、請求項8に記載のインプラント。
- 前記アクチュエータスクリューの前記後端部が、前記第一および第二端板によって支持された球状ベアリング内で支持されたボールを含む、請求項9に記載のインプラント。
- 前記アクチュエータスクリューの前記前端部が、ドライバ受容体を画定する、請求項8に記載のインプラント。
- 前記アクチュエータナットが、ラジアルフランジを備える本体を含み、前記ラジアルフランジは、前記本体の前端部と前記本体の後端部との間で外向きに延在し、前記本体の前記前端部が、前記前方アクチュエータにおいて画定される貫通通路に受容される、請求項8に記載のインプラント。
- 前記本体の前記前端部が、前記アクチュエータナットの貫通通路を中心にドライバ係合部を画定する、請求項12に記載のインプラント。
- スラストワッシャーが、前記ラジアルフランジと前記前方アクチュエータとの間に位置決めされる、請求項12に記載のインプラント。
- フィンガが前記前方アクチュエータから延在し、前記ラジアルフランジの後方で前記アクチュエータナットの前記本体の溝を係合する、請求項12に記載のインプラント。
- 前記アクチュエータアセンブリが、両方の端板の前記後端部および前端部が互いから同じ距離だけ離れて移動するように前記アクチュエータスクリューが回転し、前記アクチュエータナットが回転しない第一モードと、前記前方アクチュエータが単独で移動し、各端板の前記前端部を拡張させ、前弯角を増大させるように前記アクチュエータナットは回転するが前記アクチュエータスクリューは回転しない第二モードと、前記アクチュエータナットとアクチュエータスクリューが同時に回転し、前記後方アクチュエータのみを移動させ、前記端板の前記後端部の拡張となり、それによって前弯症の低減となる第三モードと、を含む三つのモードのうちの一つにおいて動作可能である、請求項8に記載のインプラント。
- インプラントであって、
前端部と後端部との間に延在する第一端板であって、少なくとも一つの第一前傾斜面と、少なくとも一つの第一後傾斜面とを画定する第一端板と、
前端部と後端部との間に延在する第二端板であって、少なくとも一つの第二前傾斜面と、少なくとも一つの第二後傾斜面とを画定する第二端板と、
第一端板と第二端板との間に位置付けされた後方アクチュエータであって、前記少なくとも一つの第一後傾斜面に対向して位置決めされるよう構成された、対応する数の第一ガイディング傾斜面と、前記少なくとも一つの第二後傾斜面に対向して位置決めされるよう構成された、対応する数の第二ガイディング傾斜面とを有する後方アクチュエータと、
各第一ガイディング傾斜面に旋回接続され、前記それぞれの少なくとも一つの第一後傾斜面と摺動係合する第一旋回部材と、各第二ガイディング傾斜面に旋回接続され、前記それぞれの少なくとも一つの第二後傾斜面と摺動係合する第二旋回部材と、
前記第一端板と第二端板との間に位置付けされた前方アクチュエータであって、前記少なくとも一つの第一前傾斜面に対向して位置決めされるよう構成された、対応する数の第三ガイディング傾斜面と、前記少なくとも一つの第二前傾斜面に対向して位置決めされるよう構成された、対応する数の第四ガイディング傾斜面とを有する前方アクチュエータと、
各第三ガイディング傾斜面に旋回接続され、前記それぞれの少なくとも一つの第一前傾斜面に摺動係合する第三旋回部材と、各第四ガイディング傾斜面に旋回接続され、前記それぞれの少なくとも一つの第二前傾斜面に摺動係合する第四旋回部材と、
前記後方アクチュエータと前記前方アクチュエータとの間に延在するアクチュエータアセンブリであって、
後端部と前端部との間に延在し、第一雄ねじのセット、第二雄ねじのセットおよびフランジを有するアクチュエータスクリューであって、前記第一雄ねじのセットは、前記フランジよりも前記後端部側に位置し、前記第二雄ねじのセットは前記フランジよりも前記前端部側に位置し、前記第一および第二雄ねじのセットが反対巻き(oppositely handed)であり、前記アクチュエータスクリューの前記後端部が、前記後方アクチュエータの貫通通路を貫通し、螺合するアクチュエータスクリューと、
貫通通路がアクチュエータナットの後端部からアクチュエータナットの前端部まで延在して前記貫通通路内に雌ねじを画定し、前記雌ねじが前記第二雄ねじのセットと螺合する、前記アクチュエータナットの後端部と前記アクチュエータナットの前端部との間に延在するアクチュエータナットであって、前記アクチュエータナットが前記前方アクチュエータに対して軸方向に固定されるがそれに対して回転可能であるように、前方アクチュエータを貫通するアクチュエータナットとを含むアクチュエータアセンブリと、を備え、
前記アクチュエータナットは回転しないが前記アクチュエータスクリューが回転すると、前記後方アクチュエータと前記前方アクチュエータを同時に移動させ、前記アクチュエータスクリューと前記アクチュエータナットが一緒に回転すると、前記後方アクチュエータを前記前方アクチュエータとは別に移動させ、前記アクチュエータスクリューは回転しないが前記アクチュエータナットが回転すると、前記前方アクチュエータを前記後方アクチュエータとは別に移動させる、インプラント。 - 前記アクチュエータアセンブリが、両方の端板の前記後端部および前端部が互いから同じ距離だけ離れて移動するように前記アクチュエータスクリューが回転し前記アクチュエータナットは回転しない第一モードと、前記前方アクチュエータが単独で移動し、各端板の前記前端部を拡張させ、前弯角を増大させるように前記アクチュエータナットは回転するが前記アクチュエータスクリューは回転しない第二モードと、前記アクチュエータナットとアクチュエータスクリューが同時に回転し、前記後方アクチュエータのみを移動させ、前記端板の前記後端部の拡張となり、それによって前弯症の低減となる第三モードと、を含む三つのモードのうちの一つにおいて動作可能である、請求項17に記載のインプラント。
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| US20190133782A1 (en) | 2019-05-09 |
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| US20230080037A1 (en) | 2023-03-16 |
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