JP2021062254A - 歯車式カム拡張可能椎体間インプラントおよび埋め込みの方法 - Google Patents
歯車式カム拡張可能椎体間インプラントおよび埋め込みの方法 Download PDFInfo
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- JP2021062254A JP2021062254A JP2021004799A JP2021004799A JP2021062254A JP 2021062254 A JP2021062254 A JP 2021062254A JP 2021004799 A JP2021004799 A JP 2021004799A JP 2021004799 A JP2021004799 A JP 2021004799A JP 2021062254 A JP2021062254 A JP 2021062254A
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- end plate
- distal end
- distal
- expandable spinal
- spinal implant
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- 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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- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2002/4625—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor 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 or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor 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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- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2002/4629—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof connected to the endoprosthesis or implant via a threaded connection
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Abstract
Description
[0004]上位椎体と下位椎体との間の患者の円板空間への挿入のための拡張可能脊椎インプラントを提供することが、本発明の別の目的である。インプラントは、中間長手方向軸を間に定める近位端と遠位端とを有し、折畳位置と一部拡張位置と完全拡張位置との間で拡張可能である。
近位端に定められた、インプラント拡張器具の遠位端を受け入れるように構成される開口を有する。
端46と遠位端48とを備えている。図7〜図9、図21、図22、および図46に描写されているように、シャーシ部分44の近位端46は、中間長手方向軸L−Lに対して垂直な壁であり、壁を貫いて定められる開口50と、開口50に近接する壁に定められる1つまたは複数の窪み52とを有する。シャーシ部分44は、近位端46の開口50に定められる雌ネジ山54の第1のセットをさらに備えている。
2とを有している。
[0077]一実施形態では、図39に描写されているように、タップキャップ144が内側シャフト138の近位端140に定められており、駆動部143に取り付けられる。
Claims (30)
- 上位椎体と下位椎体との間の患者の円板空間に挿入するための拡張可能脊椎インプラントであって、前記インプラントは、中間長手方向軸を間に定める近位端と遠位端とを有し、折畳位置と一部拡張位置と完全拡張位置との間で拡張可能であり、前記インプラントは、
近位端、遠位端、外面、少なくとも1つの側面、および内面を備える上位端板であって、前記内面の一部分は上位ラック部分を備え、前記上位ラック部分は、前記上位端板の前記近位端と前記遠位端との中間にある少なくとも1つの下向きに突出する歯と、前記上位端板の前記遠位端に近接する少なくとも1つの最も遠位の下向きに突出する歯とを備える、上位端板と、
近位端、遠位端、外面、少なくとも1つの側面、および内面を備える下位端板であって、前記内面の一部分は下位ラック部分を備え、前記下位ラック部分は、前記下位端板の前記近位端と前記遠位端との中間にある少なくとも1つの上向きに突出する歯と、前記下位端板の前記遠位端に近接する少なくとも1つの最も遠位の上向きに突出する歯とを備え、前記下位端板の前記近位端は前記上位端板の前記近位端に旋回可能に連結されている、下位端板と、
前記インプラント内の前記上位端板と前記下位端板との間に備え付けられ、近位端および遠位端を有するシャーシ部分であって、前記近位端は、前記近位端に定められた開口と、前記開口に近接して前記近位端に定められた少なくとも1つの窪みと、前記開口に定められた雌ネジ山の第1のセットと、前記シャーシ部分の前記近位端と前記遠位端との中間に定められた雌ネジ山の第2のセットとを有する、シャーシ部分と、
前記シャーシ部分内に移動可能に備え付けられ、近位端および遠位端を有し、第1および第2の実質的に平行な離間された壁によって定められるヨークであって、前記第1および第2の離間された壁の各々が近位端および遠位端を有する、ヨークと、
前記シャーシ部分内に回転可能に備え付けられ、外面、近位端、および遠位端を有する回転部分であって、前記近位端は前記近位端に定められた開口を有し、前記遠位端は前記ヨークの前記遠位端に近接して位置決めされ、ネジ山が前記外面の少なくとも一部分に定められ、前記ネジ山は前記シャーシ部分内で前記雌ネジ山の第2のセットと係合可能である、回転部分と、
前記ヨークの前記第1および第2の離間された壁の少なくとも一方の前記遠位端のうちの少なくとも一方に回転可能に備え付けられ、前記上位ラック部分の前記下向きに垂れ下がる歯と移動可能に係合するように構成される少なくとも1つの突出する第1の平歯車の歯を有する少なくとも1つの第1の平歯車と、
前記ヨークの前記第1および第2の離間された壁の少なくとも一方の前記遠位端のうちの少なくとも一方に回転可能に備え付けられ、前記下位ラック部分の前記上向きに突出する歯と係合するように構成される少なくとも1つの突出する第2の平歯車の歯を有する少なくとも1つの第2の平歯車と
を備え、
前記回転部分は、自身の回転運動を前記ヨークの直線運動へと変換するようにさらに構成され、前記ヨークは、前記直線運動を、少なくとも前記少なくとも1つの第1の平歯車の回転運動へと変換し、それによって前記少なくとも1つの第1の平歯車を前記ヨークに対して回転させ、
前記少なくとも1つの第1の平歯車の前記ヨークに対する回転は、前記少なくとも1つの突出する第1の平歯車の歯の、前記下向きに垂れ下がる上位ラック歯車の歯に沿う、前記インプラントの前記遠位端に向かう第1の直線歩行運動を定め、それによって前記上位端板を少なくとも前記一部拡張位置へと旋回させる、拡張可能脊椎インプラント。 - 前記回転部分の前記近位端の前記開口は、カム拡張器具の遠位端を受け入れるように構成される、請求項1に記載の拡張可能脊椎インプラント。
- 前記上位端板および前記下位端板の少なくとも一方は、その前記外面から突出する少なくとも1つの突起を備え、前記少なくとも1つの突起は、前記上位椎体および前記下位椎体のそれぞれの対応する端板と係合するように構成される、請求項1に記載の拡張可能脊椎インプラント。
- 前記ヨークは少なくとも1つの側面をさらに備え、前記少なくとも1つの側面はその側面に定められた走路を有し、前記走路は、前記下位端板および前記上位端板の一方の前記少なくとも1つの側面から突出する杭を中に受け入れるように構成され、それによって前記上位端板が前記下位端板から係合解除することを防止する、請求項1に記載の拡張可能脊椎インプラント。
- 前記回転部分の回転は、運動を少なくとも前記少なくとも1つの第2の平歯車へとさらに変換して、前記少なくとも1つの第2の平歯車を前記ヨークに対して回転させ、前記ヨークに対する前記少なくとも前記少なくとも1つの第2の平歯車の回転は、前記少なくとも1つの突出する第2の平歯車の歯の、前記上向きに突出する下位ラック歯車の歯に沿う、前記インプラントの前記遠位端に向かう第2の直線歩行運動を定め、前記下位端板を少なくとも前記一部拡張位置へと旋回させる、請求項1に記載の拡張可能脊椎インプラント。
- 前記上位端板の前記遠位端と前記下位端板の前記遠位端とは協働して先端を形成している、請求項1に記載の拡張可能脊椎インプラント。
- 前記先端は、前記中間長手方向軸に対する実質的に垂直の角度、および、前記長手方向軸に対する実質的に斜めの角度の一方を定める、請求項6に記載の拡張可能脊椎インプラント。
- 前記上位端板の前記遠位端と前記下位端板の前記遠位端とが協働して、傾斜した縁、鋭い縁、および平面状の縁の1つを定める、請求項6に記載の拡張可能脊椎インプラント。
- 前記先端は、前記上位椎体および前記下位椎体それぞれの対応する端板と係合するように構成される少なくとも1つの突起を含む、請求項6に記載の拡張可能脊椎インプラント。
- 前記回転部分は、概して円筒形であり、その外周面に定められた雄ネジ山のセットを備える、請求項1に記載の拡張可能脊椎インプラント。
- 前記上位端板および前記下位端板の少なくとも一方は、その前記外面に定められた開口部を備え、前記開口部は、それを通る骨の成長を許容するように構成される、請求項1に記載の拡張可能脊椎インプラント。
- 少なくとも1つの平歯車から延びる少なくとも1つの係合ピンをさらに備え、前記少なくとも1つの係合ピンは、前記上位端板および前記下位端板の少なくとも一方の前記少なくとも1つの側面に定められる少なくとも1つのスロットに係合するように構成され、前記少なくとも1つの係合ピンと前記少なくとも1つのスロットとの係合は、前記上位端板が前記下位端板から係合解除することを防止する、請求項1に記載の拡張可能脊椎インプラント。
- 前記上位端板の前記近位部分に近接して備え付けられた上位歯車と、前記下位端板の前記近位部分に近接して備え付けられた下位歯車とをさらに備え、前記下位歯車は前記上位
歯車に旋回可能に係合し、前記上位歯車と前記下位歯車との係合は、前記上位端板が前記下位端板から係合解除することを防止する、請求項1に記載の拡張可能脊椎インプラント。 - 少なくとも前記上位ラック部分は、最も遠位の下向きに垂れ下がる上位ラック歯車の歯を備え、前記上位ラック歯車の歯は、前記少なくとも1つの第1の平歯車の、前記下向きに垂れ下がる上位ラック歯車の歯に沿う、前記インプラントの前記遠位端に向かう前記歩行運動を少なくとも停止するように構成され、それによって、前記上位端板を、前記下位端板から離して前記完全拡張位置に向けて移動させる、請求項1に記載の拡張可能脊椎インプラント。
- 少なくとも前記下位ラック部分は、最も遠位の上向きに突出する下位ラック歯車の歯を備え、前記下位ラック歯車の歯は、前記少なくとも1つの第2の平歯車の、前記上向きに突出する下位ラック歯車の歯に沿う、前記インプラントの前記遠位端に向かう前記歩行運動を少なくとも停止するように構成され、それによって、前記上位端板を、前記下位端板から離して前記完全拡張位置に向けて移動させる、請求項1に記載の拡張可能脊椎インプラント。
- 前記回転部分はネジ山付きのネジを備える、請求項1に記載の拡張可能脊椎インプラント。
- 前記回転部分は円筒部を備え、前記円筒部は、その外側周囲に備え付けられた複数のラチェット歯を有する、請求項1に記載の拡張可能脊椎インプラント。
- 前記シャーシ部分は、前記回転部分の前記ラチェット歯に係合するように構成される一続きのツメをさらに備える、請求項1に記載の拡張可能脊椎インプラント。
- 前記ツメと前記ラチェット歯との前記係合は、少なくとも、前記インプラントを前記一部拡張位置および前記完全拡張位置の一方に維持するように構成される、請求項18に記載の拡張可能脊椎インプラント。
- 前記回転部分は、その前記遠位端に定められた実質的にT字形の突起を備え、前記実質的にT字形の突起は前記ヨークに接触するように適合される、請求項1に記載の拡張可能脊椎インプラント。
- 前記インプラントの前記近位端に定められる近位拡張機構をさらに備え、前記近位拡張機構は、前記回転部分の前記近位端に連結されたトグルと、少なくとも1つの後旋回ピンとを備え、前記少なくとも1つの後旋回ピンは、少なくとも1つの後斜面に近接して位置決めされ、前記トグルは、前記トグルを回転させるときおよび並進させるときの一方に、前記少なくとも1つの旋回ピンを前記少なくとも1つの後斜面に沿って滑らせるように構成される、請求項1に記載の拡張可能脊椎インプラント。
- 前記シャーシ部分は前記近位端と前記遠位端との中間に弓状部分をさらに備え、前記弓状部分は内面と外面とを有し、前記内面は前記内面に定められたネジ山を備える、請求項1に記載の拡張可能脊椎インプラント。
- 前記ヨークの前記遠位端は、前記ヨークの前記第1の壁の前記遠位端と前記第2の壁の前記遠位端とを連結する、前記長手方向軸に対して実質的に横断する遠位端横材をさらに備える、請求項1に記載の拡張可能脊椎インプラント。
- 前記少なくとも1つの第1の平歯車および前記少なくとも1つの第2の平歯車の少なくとも一方は長さを有し、前記完全拡張位置におけるインプラント拡張の量は前記長さに関連する、請求項1に記載の拡張可能脊椎インプラント。
- 拡張可能脊椎インプラントを上位椎体と下位椎体との間の患者の円板空間へと挿入するためのキットであって、
前記インプラントであって、
近位端、遠位端、外面、少なくとも1つの側面、および内面を備える上位端板であって、前記内面の一部分は上位ラック部分を備え、前記上位ラック部分は、前記上位端板の前記近位端と前記遠位端との中間にある少なくとも1つの下向きに突出する歯と、前記上位端板の前記遠位端に近接する少なくとも1つの最も遠位の下向きに突出する歯とを備える、上位端板、
近位端、遠位端、外面、少なくとも1つの側面、および内面を備える下位端板であって、前記内面の一部分は下位ラック部分を備え、前記下位ラック部分は、前記下位端板の前記近位端と前記遠位端との中間にある少なくとも1つの上向きに突出する歯と、前記下位端板の前記遠位端に近接する少なくとも1つの最も遠位の上向きに突出する歯とを備え、前記下位端板の前記近位端は前記上位端板の前記近位端に旋回可能に連結されている、下位端板、
前記インプラント内の前記上位端板と前記下位端板との間に備え付けられ、近位端および遠位端を有するシャーシ部分であって、前記近位端は、前記近位端に定められた開口と、前記開口に近接して前記近位端に定められた少なくとも1つの窪みと、前記開口に定められた雌ネジ山の第1のセットと、前記シャーシ部分の前記近位端と前記遠位端との中間に定められた雌ネジ山の第2のセットとを有する、シャーシ部分、
前記シャーシ部分内に移動可能に備え付けられ、近位端および遠位端を有し、第1および第2の実質的に平行な離間された壁によって定められるヨークであって、前記第1および第2の離間された壁の各々が近位端および遠位端を有する、ヨーク、
前記シャーシ部分内に回転可能に備え付けられ、外面、近位端、および遠位端を有する回転部分であって、前記近位端は前記近位端に定められた開口を有し、前記遠位端は前記ヨークの前記遠位端に近接して位置決めされ、ネジ山が前記外面の少なくとも一部分に定められ、前記ネジ山は前記シャーシ部分内の前記雌ネジ山の第2のセットと係合可能である、回転部分、
前記ヨークの前記第1および第2の離間された壁の少なくとも一方の前記遠位端のうちの少なくとも一方に回転可能に備え付けられ、前記上位ラック部分の前記下向きに垂れ下がる歯と移動可能に係合するように構成される少なくとも1つの突出する第1の平歯車の歯を有する少なくとも1つの第1の平歯車、ならびに、
前記ヨークの前記第1および第2の離間された壁の少なくとも一方の前記遠位端のうちの少なくとも一方に回転可能に備え付けられ、前記下位ラック部分の前記上向きに突出する歯と係合するように構成される少なくとも1つの突出する第2の平歯車の歯を有する少なくとも1つの第2の平歯車
を備え、
前記回転部分は、自身の回転運動を前記ヨークの直線運動へと変換するようにさらに構成され、前記ヨークは、前記直線運動を、少なくとも前記少なくとも1つの第1の平歯車の回転運動へと変換し、それによって前記少なくとも1つの第1の平歯車を前記ヨークに対して回転させ、
少なくとも前記少なくとも1つの第1の平歯車の前記ヨークに対する前記回転は、前記少なくとも1つの突出する第1の平歯車の歯の、前記下向きに垂れ下がる上位ラック歯車の歯に沿う、前記インプラントの前記遠位端に向かう第1の直線歩行運動を定め、それによって前記上位端板を少なくとも一部拡張位置へと旋回させる、
前記インプラントと、
前記インプラントの前記近位端に取り付け可能な挿入器具と
を備えるキット。 - 前記挿入器具は、近位端および遠位端を備え、
近位端および遠位端を有する少なくとも1つの中空な実質的に円筒形の外側シャフトであって、前記遠位端は少なくとも1つの突出する指部分を備え、前記少なくとも1つの突出する指部分は、前記シャーシ部分の後壁に定められた少なくとも1つの窪みに係合するように構成される、外側シャフトと、
前記少なくとも1つの外側シャフトを貫いて通るように構成され、近位端および遠位端を有する実質的に円筒形の内側シャフトであって、前記遠位端は、その外周面に定められた雄ネジ山のセットを備え、前記雄ネジ山のセットは、前記シャーシ部分内で前記雌ネジ山の第1のセットに係合するように構成される、実質的に円筒形の内側シャフトと
を備える、請求項25に記載のキット。 - 前記内側シャフトの前記近位端は、骨移植材料を前記外側シャフトへと挿入するように構成される、前記近位端に定められた漏斗部分をさらに備える、請求項26に記載のキット。
- 前記外側シャフトは、前記骨移植材料を前記漏斗部分から前記インプラントの前記シャーシ部分へと移送するように適合される、請求項27に記載のキット。
- 前記内側シャフトを貫いて延びる細長い駆動ロッドをさらに備える、請求項25に記載のキット。
- 前記駆動ロッドの近位端に取り付けられるT字形取っ手およびタップキャップの一方をさらに備える、請求項29に記載のキット。
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2017
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US10932920B2 (en) | 2021-03-02 |
JP2019503238A (ja) | 2019-02-07 |
WO2017132537A1 (en) | 2017-08-03 |
EP3777778A1 (en) | 2021-02-17 |
US20190091033A1 (en) | 2019-03-28 |
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