JPH05305097A - 椎骨接合システムの２本のロッドを横断方向に頑丈に連結するための横断固定装置。 - Google Patents

椎骨接合システムの２本のロッドを横断方向に頑丈に連結するための横断固定装置。

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Publication number
JPH05305097A
JPH05305097A JP3068783A JP6878391A JPH05305097A JP H05305097 A JPH05305097 A JP H05305097A JP 3068783 A JP3068783 A JP 3068783A JP 6878391 A JP6878391 A JP 6878391A JP H05305097 A JPH05305097 A JP H05305097A
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Prior art keywords
rigid rod
rods
hook
rod
rigid
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JP3068783A
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English (en)
Inventor
Yves P Cotrel
ポール コトレル イヴ
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Societe de Fabrication de Material Orthopedique en Abrege SOFAMOR SNC
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Societe de Fabrication de Material Orthopedique en Abrege SOFAMOR SNC
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Publication of JPH05305097A publication Critical patent/JPH05305097A/ja
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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
    • A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
    • A61B17/7049—Connectors, not bearing on the vertebrae, for linking longitudinal elements together
    • A61B17/7052—Connectors, not bearing on the vertebrae, for linking longitudinal elements together of variable angle or length
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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
    • A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements for external osteosynthesis, e.g. distractors, contractors
    • A61B2017/603—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements for external osteosynthesis, e.g. distractors, contractors with three points of contact, e.g. tripod

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Neurology (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)
  • Vehicle Body Suspensions (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

(57)【要約】 【目的】 椎骨の骨接合システムの２本のロッド(1, 2)
の間を頑丈に連結するための横断固定装置で用いられる
固定要素 (4)。 【構成】 横断方向に延びた剛性ロッド(3) を摺動させ
ることができるような状態で剛性ロッド上に被せること
ができるフック (4)によって構成され、このフックはブ
ロック化手段(9, 8)を備え、さらに、本体 (5)と、剛性
ロッドの巾に対応した間隙 (d)だけ互いに離れた２つの
刃部 (6)とを有し、２つの刃部の間の本体の部分には、
フックが剛性ロッドと当接する支持部(7) が形成されて
おり、この支持部は、フックを剛性ロッド上に被せた時
に、剛性ロッドの両側へ向かって延びるようになってい
る。 【効果】 ２つのフック (4)と四角な剛性ロッド (3)と
の組み合せで、迅速に取付けでき且つ捩れおよび曲げに
対して強い簡単な横断結合装置が得られる。

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、椎骨の骨接合 (osteos
ynthese rachidienne)システムの２本のロッドを横断方
向に互いに頑丈に接続するための横断接続装置で用いら
れる固定要素と、この固定要素を備えた横断固定装置と
に関するものである。
【０００２】
【従来の技術】コントレドゥボシ(COTREL-DUBOUSSET)法
を用いた椎骨の骨接合では、横断接続装置（一般に、DT
T と言われている）が用いられる。この横断接続装置は
ネジ付きロッドを備えた固定フックと、ナットおよびネ
ジを用いてローレット加工された２本のロッドに接近・
離反可能な３つの自由フックとで構成されている。この
DTT装置は、骨接合部材を骨格の形に確実に安定化させ
るために必要であるが、以下の欠点がある： (1) 取付けに要する時間が比較的長い。 (2) 取付けがかなり難しい。 (3) 捩れ強度および撓み強度がかなり低い。
【０００３】
【発明が解決しようとする課題】本発明の目的は上記の
欠点を無くすことにある。
【０００４】
【課題を解決するための手段】本発明の提供する椎骨の
骨接合システムの２本のロッドの間を頑丈に連結するた
めの横断固定装置で用いられる固定要素は、横断方向に
延びた剛性ロッドを摺動させることができるような状態
で剛性ロッド上に被せることができるフックによって構
成され、このフックはブロック化手段を備えており、さ
らに、このフックは本体と、剛性ロッドの巾に対応した
間隙だけ互いに離れた２つの刃部とを有し、上記２つの
刃部の間の本体部分には、フックが剛性ロッドと当接す
る支持部が形成されており、この支持部は、フックを剛
性ロッド上に被せた時に、剛性ロッドの両側へ向かって
延びるようになっていることを特徴としている。
【０００５】本発明の特殊実施例では、上記２つの刃部
が、ロッドを取り囲むようにロッドの曲率半径に対応し
た曲率半径で湾曲している。本発明の別の特殊実施例で
は、上記支持部 (7)が平らになっていて、断面が四角形
の剛性ロッドの表面と当接できるように２つの刃部が支
持部の両側に互いに平行に延びている。
【０００６】本発明はさらに、横断固定装置を提供す
る。この横断固定装置は、適当な長さの剛性ロッドと、
この剛性ロッド上の所定位置に調節自在な状態で固定可
能な、上記のロッドに剛性ロッドを固定するための一対
の固定要素とを組み合せたもので構成される。
【０００７】本発明の固定要素は、これまで使用されて
いたものに比べて単純であるので、外科医はより迅速且
つより容易に取付けることができる。しかも、剛性ロッ
ドの横断面が大きく且つ全長にわたって一定であるの
で、捩れと曲げとに対して極めて大きな強度を示す。以
下、本発明の一実施例を示す添付の図面を参照して本発
明を説明する。しかし、本発明が以下の実施例に限定さ
れるものではない。
【０００８】
【実施例】添付の各図は、椎骨５の一部に取付けられる
椎骨接合システムの２本のロッド１と２（図６に一部分
が示されている）の間を横断方向に頑丈に連接するため
の横断固定装置を示している。この装置は、２本のロッ
ド１、２の間の間隙よりわずかに長い適当な長さに切ら
れた剛性ロッド３と、この剛性ロッド３の所定位置に調
節自在な状態で固定可能な１対の固定要素４とで構成さ
れている。剛性ロッド３は適当な断面、例えば長方形を
有している。各固定要素４は摺動自在な状態で剛性ロッ
ド３を覆うことが可能なフックによって構成されてい
る。すなわち、各フック４は本体５と２つの刃部６とに
よって構成され、これら２つの刃部６は、剛性ロッド３
の両サイドに延びた状態で剛性ロッド３を跨ぐことがで
きるように、四角い横断面の剛性ロッド３の表面３ａの
一つの巾に対応した距離ｄ（第３図）だけ互いに離れて
平行に延びている。２つの刃部６は、それらの当接面６
ａで剛性ロッド３を取り囲むことができるようにするた
めに、ローレットを付けたロッド１、２の曲率半径に対
応した曲率半径で、例えば半円周をわずかに越えた状態
で、湾曲している。２つの刃部６の底部の間の本体５に
は、剛性ロッド３の表面3aと当接する支持部７が形成さ
れている。この支持部７は剛性ロッド３をフック４内に
収容する収容部の底を構成している。この支持部７は本
体５の一端から他端まで延び、その中間区域において、
本体５に形成されたネジ孔８（第１図および３図）によ
って中断されている。このネジ孔８にはそれに対応した
ネジ付きプラグ９が螺合できるようになっていて、この
ネジ付きプラグ９を締め込み終わった時に、支持部７に
当接した剛性ロッド３の表面3aにネジ付きプラグ９が当
接し、ネジ付きプラグ９とロッド１（または２）との間
で剛性ロッド３が締め付け固定されるようになってい
る。ネジ付きプラグ９が剛性ロッド３上に当接する表面
は平らにするか、係合手段、例えば突起を有する面にす
ることができる。各ネジ付きプラグ９にはそれをネジ込
むための工具 (図示せず) を収容するための角穴11、例
えば六角穴が形成されている。
【０００９】上記の位置を取付ける場合には、外科医
は、ロッド２上に剛性ロッド３を配置した後、ロッド
１、２を取り囲むように剛性ロッド３を跨がせて、各ロ
ッドにフック４を取付ける。取付け方法を選択すること
によって、フック４がロッド１、２の間の間隔を離すよ
うに配置する（第６図）か、両方のロッドを互いに近ず
けるように配置することができる。２つのロッドを互い
に離反させる位置では、２つの刃部６が互いに反対方向
を向き、その各底部はロッド１と２との間に来る。逆
に、２つのロッドを互いに近づけさせる位置では、刃部
６が互いに対向し、各底部がロッド１、２の外側に来る
ようにフック４を配置する。従って、ロッド１、２上へ
の剛性ロッド３の固定は、外科医が２つのフック４の間
隔を開けるか、狭めるかした後に行なわれる。その後、
ネジ付きプラグ９を剛性ロッド３上の所定位置で締め付
けることによってフック４を固定すると、ロッド１、２
間の間隔は一定に維持され、剛性ロッド３が２つのロッ
ド１、２に対して固定され、捩れおよび曲げに対して極
めて強い安定した骨接合システムとなる。本発明は上記
実施例に限定されるものでなく、種々変更することがで
きる。例えば、剛性ロッド３の横断面は必要に応じて四
角形以外にすることができ、フック４をブロック化する
ためのネジ付きプラグ９は任意の均等手段と置換するこ
とができる。
【図面の簡単な説明】
【図１】本発明による横断固定装置の一実施例の分解斜
視図。
【図２】図１の装置の固定要素の１つの拡大斜視図。
【図３】上記装置のフックの１つと、このフックを掛け
るロッド上にこのフックを固定するためのプラグとを図
１および図２とは違った角度から見た時の斜視図。
【図４】図１〜図３の装置を組み合わせた時の装置のロ
ッド側をフックの下側から見た斜視図。
【図５】フックが掛けられた図１〜図４の装置のロッド
の一部分の側面図。
【図６】椎骨の一部に取付けた図１〜５の横断固定装置
の斜視図。
【符号の説明】
１，２ ロッド ３ 剛性ロッド ４ フック ５ 本体 ６ 刃部 ７ 支持部 ８ ネジ穴 ９ ネジ付きプラグ 11 角穴

Claims (7)

    【特許請求の範囲】
  1. 【請求項１】椎骨の骨接合システムの２本のロッド(1,
    2)の間を頑丈に連結するための横断固定装置で用いられ
    る固定要素 (4)において、 横断方向に延びた剛性ロッド３を摺動させることができ
    るような状態で剛性ロッド (3)上に被せることができる
    フック (4)によって構成され、 このフック (4)はブロック化手段(9, 8)を備えており、 このフック (4)は本体 (5)と、剛性ロッド (3)の巾に対
    応した間隙 (d)だけ互いに離れた２つの刃部 (6)とを有
    し、 上記２つの刃部 (6)の間の本体 (5)には、フック (4)が
    剛性ロッド (3)と当接する支持部 (7)が形成されてお
    り、この支持部 (7)は、フック (4)を剛性ロッド(3) 上
    に被せた時に、剛性ロッド (3)の両側へ向かって延びる
    ようになっていることを特徴とする固定要素。
  2. 【請求項２】断面が四角形の剛性ロッド (3)の表面(3a)
    と当接できるように上記支持部 (7)が平らであり、２つ
    の刃部 (6)が支持部 (7)の両側に互いに平行に延びてい
    る請求項１に記載の固定要素。
  3. 【請求項３】２つの刃部 (6)が、ロッド(1, 2)を取り囲
    むようにロッド(1, 2)の曲率半径に対応した曲率半径で
    湾曲しており且つロッド(1, 2)と当接する湾曲面(6a)を
    有している請求項１または２のいずれか一項に記載の固
    定要素。
  4. 【請求項４】上記ブロック化手段がネジ付きプラグ (9)
    と、このネジ付きプラグ (9)に対応した本体 (5)に形成
    されたネジ孔 (8)とを含み、このネジ孔 (8)は、その中
    にネジ付きプラグ (9)をネジ込んだ時に剛性ロッド (3)
    をロッド(1, 2)に固定できる状態で、剛性ロッド (3)の
    支持部 (7)に開口している請求項１〜３のいずれか一項
    に記載の固定要素。
  5. 【請求項５】椎骨の骨接合システムの２本のロッド(1,
    2)の間を頑丈に連結するための横断固定装置において、
    (a) 適当な長さの剛性ロッド (3)と、(b) この剛性ロッ
    ド (3)上の所定位置に調節自在な状態で固定可能な請求
    項１〜４のいずれか一項に記載のロッド(1, 2)に剛性ロ
    ッド (3)を固定するための１対の固定要素 (4)とによっ
    て構成されることを特徴とする横断固定装置。
  6. 【請求項６】剛性ロッド (3)が四角形の横断面を有し、
    固定要素 (4)を上記ロッド(1, 2)の１つの表面に当接で
    きるように各固定要素 (4)の支持部 (7)が平らである請
    求項５に記載の横断固定装置。
  7. 【請求項７】ネジ付きプラグ (9)と係合可能なネジ込み
    工具を挿入するための角穴(11)がネジ付きプラグ (9)に
    形成されている請求項６に記載の横断固定装置。
JP3068783A 1990-03-08 1991-03-08 椎骨接合システムの２本のロッドを横断方向に頑丈に連結するための横断固定装置。 Pending JPH05305097A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9002970 1990-03-08
FR9002970A FR2659225B1 (fr) 1990-03-08 1990-03-08 Dispositif de fixation transverse pour assurer une liaison transversale rigide entre deux tiges d'un systeme d'osteosynthese rachidienne.

Publications (1)

Publication Number Publication Date
JPH05305097A true JPH05305097A (ja) 1993-11-19

Family

ID=9394534

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3068783A Pending JPH05305097A (ja) 1990-03-08 1991-03-08 椎骨接合システムの２本のロッドを横断方向に頑丈に連結するための横断固定装置。

Country Status (9)

Country Link
US (2) US5487742A (ja)
EP (1) EP0446092B1 (ja)
JP (1) JPH05305097A (ja)
AT (1) ATE125436T1 (ja)
DE (1) DE69111489T2 (ja)
DK (1) DK0446092T3 (ja)
ES (1) ES2077817T3 (ja)
FR (1) FR2659225B1 (ja)
GR (1) GR3017302T3 (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1080432A (ja) * 1996-06-03 1998-03-31 Stryker Fr Sa 脊椎骨接合手術用ロッド間の剛性横断リンク形成装置
JP2000325373A (ja) * 1999-05-21 2000-11-28 Robert Riido Shokai:Kk ロッド対の間隔調整装置
JP2003503143A (ja) * 1999-07-01 2003-01-28 スピネヴィジョン エス．エー． 脊椎骨接合系のための横連結器
JP2022501089A (ja) * 2018-08-16 2022-01-06 ウォーソー・オーソペディック・インコーポレーテッド 脊椎インプラントシステムおよび方法

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AU659912B2 (en) * 1992-03-10 1995-06-01 Bristol-Myers Squibb Company Perpendicular rod connector for spinal fixation device
US5888221A (en) * 1992-08-11 1999-03-30 Gelbard; Steven D. Spinal stabilization implant system
US5334203A (en) * 1992-09-30 1994-08-02 Amei Technologies Inc. Spinal fixation system and methods
FR2697742B1 (fr) * 1992-11-06 1994-12-16 Biomat Dispositif d'ostéosynthèse pour consolidation rachidienne.
FR2697743B1 (fr) * 1992-11-09 1995-01-27 Fabrication Mat Orthopedique S Dispositif d'ostéosynthèse rachidienne applicable notamment aux vertèbres dégénératives.
FR2697745A1 (fr) * 1992-11-10 1994-05-13 Medic Instr Dispositif de solidarisation transversale de deux barres d'un système pédiculaire destiné à la chirurgie.
US5527314A (en) * 1993-01-04 1996-06-18 Danek Medical, Inc. Spinal fixation system
WO1994016635A1 (fr) * 1993-01-19 1994-08-04 Jbs Sa Dispositif d'osteosynthese rachidienne
FR2704420A1 (fr) * 1993-04-27 1994-11-04 Innovations Technologiques Ste Bride pour dispositif de fixation spinale.
ES2115767T3 (es) * 1993-05-11 1998-07-01 Synthes Ag Elemento de fijacion para osteosintesis y accesorio de manipulacion.
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EP0446092A1 (fr) 1991-09-11
FR2659225B1 (fr) 1995-09-08
DK0446092T3 (da) 1995-12-11
EP0446092B1 (fr) 1995-07-26
GR3017302T3 (en) 1995-12-31
DE69111489T2 (de) 1996-01-25
DE69111489D1 (de) 1995-08-31
US5487742A (en) 1996-01-30
ES2077817T3 (es) 1995-12-01
US5651789A (en) 1997-07-29
FR2659225A1 (fr) 1991-09-13

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