JP5769801B2 - 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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- JP5769801B2 JP5769801B2 JP2013514143A JP2013514143A JP5769801B2 JP 5769801 B2 JP5769801 B2 JP 5769801B2 JP 2013514143 A JP2013514143 A JP 2013514143A JP 2013514143 A JP2013514143 A JP 2013514143A JP 5769801 B2 JP5769801 B2 JP 5769801B2
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- anchor
- bone
- vertebral
- head
- fixation
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- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
-
- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Molecular Biology (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Vascular Medicine (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
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 (12)
- 椎骨固定システムであって、上方の椎体と下方の椎体との間に配置されるように構成された椎骨インプラントを備え、該椎骨インプラントは、前記上方の椎体と前記下方の椎体との間に該椎骨インプラントが配置された時に、前記上方の椎体に面するように構成された上面と、前記下方の椎体に面するように構成された、前記上面とは反対側の下面とを有するインプラント本体を有しており、前記インプラント本体はさらに1つ以上の空所を有しており、
前記インプラント本体に結合されるように構成されたプレートを備え、該プレートは、該プレートを貫通していて、前記1つ以上の空所と整列する1つ以上の開口を有しており、
前記椎骨インプラントを前記上方及び下方の椎体の少なくとも一方に連結するように構成された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のアンカであって、第1のヘッドと、該第1のヘッドから延在していて、前記第1の目標位置にねじ結合されるように構成された、ねじ山を設けた第1のシャフトとを有していて、前記第1のヘッドは、ボア軸線に沿って該第1のヘッドを貫通したボアを形成している、第1のアンカと、
前記アンカ・イン・アンカシステムが前記椎骨インプラントを前記上方及び下方の椎体の少なくとも一方に連結する時に、前記上方の椎体か又は前記下方の椎体によって形成される第2の目標位置にねじ結合するように、前記ボアを貫通して延在するような大きさの、ねじ山を設けたシャフトを有している、第2のアンカとを備えていて、
前記プレートの前記1つ以上の開口は、前記1つ以上のアンカ・イン・アンカシステムの各々を受け入れるような大きさに構成されており、
前記1つ以上の空所は、前記1つ以上のアンカ・イン・アンカシステムが前記1つ以上の開口内に受け入れられた時に、前記1つ以上のアンカ・イン・アンカシステムの各々の部分を受け入れる大きさに構成されていることを特徴とする、椎骨固定システム。 - 前記第2のアンカは、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の目標位置が、前記上方の椎体か又は前記下方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1つ以上の空所は、第1の空所と第2の空所であり、前記上面及び下面の少なくとも一方に、前記第1及び第2の空所が形成されている、請求項1記載の椎骨固定システム。
- 前記下面は、前記上面から横方向の間隔をおいており、前記インプラント本体は、更に、第1の端部と、該第1の端部から前記横方向に対して実質的に直角な縦方向の間隔をおいた第2の端部とを備えており、前記プレートは、前記インプラント本体の前記第2の端部に結合されるように構成されている、請求項1記載の椎骨固定システム。
- 前記1つ以上の空所は上方の空所と下方の空所であり、前記上面は前記上方の空所を有していて、前記下面は前記下方の空所を有しており、前記上方向の空所は、前記第1及び第2のアンカの一方の部分を受け入れるように構成されており、かつ、前記下方の空所は、前記第1及び第2のアンカの他方の部分を受け入れるように構成されている、請求項1記載の椎骨固定システム。
- 前記1つ以上のアンカ・イン・アンカシステムの各々が、前記椎骨インプラントを前記少なくとも1つの椎体に結合する際、前記第2のアンカが前記第1のアンカの前記ボアを通過する時に該第2のアンカを前記空所が受け入れ、前記上方及び下方の椎体の一方が前記第2の目標位置を形成することになる、請求項1記載の椎骨固定システム。
- 前記インプラント本体は、該インプラント本体内に延びるインプラントボアを有しており、該インプラントボアは、前記第1のアンカを受け入れるような大きさであって、前記インプラント本体が前記第1の目標位置を形成することになる、請求項8記載の椎骨固定システム。
- 前記下面は、前記上面から横方向の間隔をおいており、前記インプラント本体は、更に、第1の端部と、該第1の端部から前記横方向に対して実質的に直角な縦方向の間隔をおいた第2の端部とを備えており、前記インプラントボアは、前記縦方向に沿って延びている、請求項9記載の椎骨固定システム。
- 前記第1のアンカと前記第2のアンカは、それぞれ、前記第1の開口と前記第2の開口を通過して、前記椎体のそれぞれ1つの中に侵入するような大きさであって、前記椎体は、それぞれ、前記第1の目標位置と前記第2の目標位置を形成することになる、請求項1記載の椎骨固定システム。
- 前記第1の開口と前記第2の開口は、互いに離間している、請求項11記載の椎骨固定システム。
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