JP2009056292A5 - - Google Patents

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Publication number
JP2009056292A5
JP2009056292A5 JP2008193438A JP2008193438A JP2009056292A5 JP 2009056292 A5 JP2009056292 A5 JP 2009056292A5 JP 2008193438 A JP2008193438 A JP 2008193438A JP 2008193438 A JP2008193438 A JP 2008193438A JP 2009056292 A5 JP2009056292 A5 JP 2009056292A5
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Japan
Prior art keywords
bone anchoring
head
anchoring device
locking ring
bone
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JP2008193438A
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JP2009056292A (ja
JP5415722B2 (ja
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Priority claimed from EP07015041A external-priority patent/EP2022423B1/en
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Publication of JP2009056292A5 publication Critical patent/JP2009056292A5/ja
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Publication of JP5415722B2 publication Critical patent/JP5415722B2/ja
Expired - Fee Related legal-status Critical Current
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Claims (16)

  1. 骨固定装置であって、
    骨に固定するためのシャフト(2)および頭部(3,3′)を有する骨固定要素(1,1′)と、
    前記骨固定要素にロッド(6)を結合するための受部(5)とを備え、前記受部は、
    前記ロッドを受けるための、第1の端部(9a)および第2の端部(9b)およびU字型凹部(12)を有する第1の部分(9)を備え、前記凹部(12)は、前記第1の端部(9a)から前記第2の端部(9b)の方向に延びており、それによって2つの自由な脚部(12a,12b)を形成し、前記受部はさらに、
    前記頭部(3,3′)を収容するための、前記第1の端部とは反対側の前記第2の端部(9b)の側に第2の部分(16)を備え、前記第2の部分は、自由端(17)を有し、前記頭部の導入および留めを可能にするように可撓性であり、前記骨固定装置はさらに、
    前記第2の部分(16)を囲むロッキングリング(8)を備え、
    前記頭部(3,3′)は、前記ロッドで前記ロッキングリング(8)の上に圧力をかけ、その結果、前記受部の前記第2の部分を圧縮することによってロックされ、前記ロッキングリング(8)は、前記第2の部分(16)の前記自由端(17)から前記受部に取付けられる、骨固定装置。
  2. 前記第2の端部に隣接する前記受部(5)の前記第2の部分(16)の直径は、前記第2の端部(9b)における前記第1の部分(9)の直径よりも小さい、請求項1に記載の骨固定装置。
  3. 前記ロッキングリング(8)は、前記第1の部分(9)の前記第2の端部(9b)によって制限される第1の位置と、前記頭部が留められていないときに前記第2の部分(16)の前記自由端(17)によって制限される第2の位置との間で前記第2の部分に沿って動くことができる、請求項1または2に記載の骨固定装置。
  4. 前記ロッキングリング(8)の外径は、前記第1の部分(9)の外径よりも小さいか、または前記第1の部分(9)の外径と等しい、請求項1から3のいずれかに記載の骨固定装置。
  5. 前記受部の前記第2の部分(16)は、前記第2の端部(9b)に向かって先細りになる円錐形の外面を有する、請求項1から4のいずれかに記載の骨固定装置。
  6. 前記ロッキングリングは、前記第2の部分(16)の前記円錐形の外面に対応する、円錐形に先細りになる内面を備えるセクション(8a)を有する、請求項5に記載の骨固定装置。
  7. 円錐角(α)は、前記ロッキングリング(8)と前記第2の部分(16)との間の自動ロッキングを提供するように選択される、請求項6に記載の骨固定装置。
  8. 前記ロッキングリング(8)は、前記頭部が留められていないときに前記U字型凹部(12)の中に突出する、180°だけオフセットされた2つの突起(21)を備える、請求項1から7のいずれかに記載の骨固定装置。
  9. 前記第2の部分(16)は、前記自由端(17)に開放する複数のスリット(19,20)を備える、請求項1から8のいずれかに記載の骨固定装置。
  10. 前記第1の部分(9)は、前記第1の端部(9a)のある距離のところから前記第2の端部(9b)まで延びる複数のスリット(15)を備える、請求項1から9のいずれかに記載の骨固定装置。
  11. 前記頭部(3)は球形セグメントの形状をしており、前記第2の部分は、前記頭部(3)の回動運動を可能にするように、対応する球形部分(18)を有する内面を備える、請求項1から10のいずれかに記載の骨固定装置。
  12. 前記頭部(3′)は円筒形の形状をしており、前記第2の部分は、前記頭部(3′)の動きを単一の軸を中心とした回転運動に制限するように、対応する円筒形部分(181)を有する内面を備える、請求項1から10のいずれかに記載の骨固定装置。
  13. 前記凹部において前記ロッドを固定するために閉じ要素(7)、好ましくは止めねじが設けられる、請求項1から12のいずれかに記載の骨固定装置。
  14. 前記第2の部分(16)の前記自由端(17)を通る面は、前記第1の端部(9a)に対してある角度を含む、請求項1から10のいずれかに記載の骨固定装置。
  15. 前記ロッキングリングは、前記頭部(3)がまだ前記第2の部分(16)に挿入されていないときに前記ロッキングリングが前記自由端(17)を通って抜けるのを防ぐ構造(23)を有する、請求項1から14のいずれかに記載の骨固定装置。
  16. 前記ロッキングリングは、突起と同じ方向に延びる環状端縁を有し、環状端縁の高さは、前記頭部が前記ロッキングリングによって留められると端縁が前記受部の前記第1の部分の一部を包込むような大きさにされる、請求項1から15のいずれかに記載の骨固定装置。
JP2008193438A 2007-07-31 2008-07-28 骨固定装置 Expired - Fee Related JP5415722B2 (ja)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US95317007P 2007-07-31 2007-07-31
EP07015041A EP2022423B1 (en) 2007-07-31 2007-07-31 Bone anchoring device
US60/953,170 2007-07-31
EP07015041.2 2007-07-31

Related Child Applications (1)

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JP2013235739A Division JP2014079628A (ja) 2007-07-31 2013-11-14 骨固定装置

Publications (3)

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JP2009056292A JP2009056292A (ja) 2009-03-19
JP2009056292A5 true JP2009056292A5 (ja) 2011-07-07
JP5415722B2 JP5415722B2 (ja) 2014-02-12

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JP2008193438A Expired - Fee Related JP5415722B2 (ja) 2007-07-31 2008-07-28 骨固定装置
JP2013235739A Withdrawn JP2014079628A (ja) 2007-07-31 2013-11-14 骨固定装置

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Country Status (8)

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US (3) US8192470B2 (ja)
EP (4) EP2022423B1 (ja)
JP (2) JP5415722B2 (ja)
KR (1) KR101496311B1 (ja)
CN (1) CN101357073B (ja)
DE (2) DE602007007758D1 (ja)
ES (4) ES2348814T3 (ja)
TW (1) TWI441614B (ja)

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