JP2912087B2 - 脊柱骨接合締付けを容易にする相互連結装置 - Google Patents

脊柱骨接合締付けを容易にする相互連結装置

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Publication number
JP2912087B2
JP2912087B2 JP4149908A JP14990892A JP2912087B2 JP 2912087 B2 JP2912087 B2 JP 2912087B2 JP 4149908 A JP4149908 A JP 4149908A JP 14990892 A JP14990892 A JP 14990892A JP 2912087 B2 JP2912087 B2 JP 2912087B2
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screw
bar
tightening
collars
clamping
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JPH0716237A (ja
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ジーン−ルイス．ヴィグノード
ギルズ．ミッセナード
フィリッピ．ラプレスレ
ジーン−フランコス．サクリステ
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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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • 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, setting implements or the like
    • 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 ; Bone 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, e.g. tourniquets
    • 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, setting implements or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • 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, setting implements or the like
    • 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 ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Cardiology (AREA)
  • Transplantation (AREA)
  • Vascular Medicine (AREA)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Massaging Devices (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、２つの脊柱骨接合締付
け具を特定の位置で相互連結して締付けのできる装置に
関する。
【０００２】本発明は、限定されないが、さらに詳述す
れば、ねじもしくは折れ曲り板により形成された疑似骨
アンカレッジ部で構成された一定数の締付け具に差し込
み締付けた棒材と；音叉型頭部により構成され、それの
２つの枝の間に前記棒材を差し込み、それを前記両枝と
対向する内面に取付けた内側ねじ山に嵌込んだ付属ねじ
により締付けて構成された棒材固定本体とからなる形式
の脊柱骨接合装置に関する。
【０００３】
【従来の技術】通常、たとえば、脊柱の１つの椎骨を骨
折した場合、２本の骨接合棒を脊柱の両側で平行に一定
の椎骨に固定した締付け具の助けを借りて固定する。
【０００４】この装置は、前記２本の棒材を相互連結
し、前記２本の棒材上に係合したフックを相互連結する
横向きの棒材によりほぼ構成された横方向に作用する一
体装置と牽引装置により完成される。
【０００５】
【発明が解決しようとする課題】これらの装置は、その
取付けが実際的でなく、前記２本の棒材がそれにはたら
く牽引力のため前記棒材を捩らせる種類のものである。
【０００６】本発明の目的は、詳述すれば、このような
骨接合装置に横方向牽引に一体化を果たさせ、従来の装
置に比較して、単純な設計、取付けが容易かつ効果的な
装置を提供するにある。
【０００７】
【課題を解決するための手段】この目的を念頭におい
て、本発明は、２つの脊柱骨接合締付け具の締付けがで
きる相互連結装置の提供を目的とし、前記締付け具がね
じにより形成された骨固定部と；折れ曲り板もしくは同
様の装置と；一体化棒材を固定し、前記棒材と前記締付
けねじの双方を差し込む音叉型頭部により形成された一
体化棒材を固定する本体からなり、前記一体化棒材が２
つの環状素子からなることと、そのおのおのが前記音叉
型頭部の２つの枝の片方外部に取付け可能であること
と、前記おのおの環状素子が１つの外部締付け棒材から
なり、締付けつばに嵌込み可能であることと、前記装置
の前記２つの締付けつばを、前記つばを貫通する共通の
ねじでねじ込むことを特徴とする。
【０００８】
【作用】音叉型頭部に取付けられたおのおのの環状素子
は、前記締付け具の相互連結棒材の締付けねじをねじ込
むと前記音叉型頭部に締付けられる。この作業の目的
は、前記音叉型頭部の２つの枝を拡げて離間させ、従っ
て前記音叉型頭部を囲繞する前記環状素子を締付けるこ
とである。
【０００９】次に、おのおのの環状素子の外側頭部は、
そのつばの内側を滑らせて調整する。前記２つの外部棒
材の正しい位置を探し出して、ただ１本ねじの簡単なね
じ込みで前記２つの締付けつばを締付ける。
【００１０】前記一体化装置の牽引力は、このようにし
て前記締付け具に直接はたらくが、前記２つの締付け具
の間の相互連結棒材には、もはやはたらくことはせず、
前記環状素子の締付け棒材と、締付けつばの様々の自由
度が、それらの可能な位置と向きのいかんにかかわら
ず、前記音叉型頭部の２つの枝にある環状素子の位置決
めに関し、相当な融通性をもって得られる。
【００１１】本発明は又、脊柱の一方の所定の側に配置
され、上述の形式の２つの骨接合装置に属し、又一方が
他方の延長として配置される２つの締付け具の間の相互
連結にも適応でき、その場合、本発明の装置は前記２つ
の先端締付け具の間に取付けられる。
【００１２】
【実施例】図１は、脊柱の両側に、ねじもしくは折れ曲
り板で形成された疑似骨固定部分で構成された一定数の
締付け具を連結する１本の一体化棒材２と、前記棒材２
を収容し締付ける頭部を具備する脊髄器具をつけた椎骨
を１で示す。
【００１３】図１は、おのおのの棒材２に、これらの締
付け具たとえば、図２に詳しく示された周知の種類の茎
ねじを１つだけつけたことを示す。
【００１４】このねじ３は、ねじ込み疑似骨アンカレッ
ジ棒材４と；前記２つの枝５ａと５ｂの間からの前記棒
材２を前記枝５ａと５ｂの間に噛合い、かつ前記枝に対
向する内面に設けられた内部ねじ山７にねじ込まれた締
付けねじ６により締付け保持する音叉型円筒状頭部５を
具備する。前記締付けねじ６をその上面に設け、それに
前記棒材２の締付け用レンチを収容する多角形中空くぼ
みをもたせてある。
【００１５】このような装置は周知であり、そして一体
化と、前記２本のほぼ平行する棒材２を連結する横方向
牽引装置でほぼ完成される。
【００１６】本発明によれば、図１の略図でさらに詳細
に示された一体化と横方向牽引装置は、図３と図４で示
す特定実施例によって構成される。
【００１７】本発明の装置は、２つの環状素子９を備
え、そのおのおのの外側に一定の長さを有する締付け棒
材１０を設ける。前記棒材１０の軸はたとえば、補助素
子９の中心を貫通するが、前記環状素子の平面の内側ど
のような向きをもっても差支えなく、又この面に対して
どのような勾配をもっても差支えない。
【００１８】おのおのの締付け棒材１０は摺動でき、又
は締付けつば１１内に締付けが可能である。
【００１９】示された本実施例では、前記２つの締付け
つばを重置して、前記２本の棒材１０と直交する共通締
付けねじ１２で横断させる。前記ねじは、たとえば、前
記ねじ６と同様の内部ソケットヘッドねじである。
【００２０】おのおのの環状素子９は図５に示すよう
に、凸外面と；直径が前記茎ねじもしくは他の同類の締
付け具３の外径に相当する円筒状内面１４と；前記締付
け具（３）の頭部に嵌込もうとする側面の内側縁につけ
て嵌込みを容易にする面１５と；からなる。
【００２１】前記棒材２をねじ６でねじ込む前に、おの
おのの環状素子９を頭部５に取付け、その後、前記ねじ
６をねじ込んで棒材２を定置させると、前記ねじ６が前
記枝５ａ、５ｂを拡げて離間させるので、前記素子９を
締付けることになる。
【００２２】前記２つの素子９を図１に示す通り、２つ
の締付け具３の間に対向して取付ける。
【００２３】これら２つの素子９は又、脊柱の同一側に
配置された２つの締付け具に取付けても差支えない。こ
の場合、おのおのの締付け具３は、たとえば、相互連結
する棒材の先端を固定する茎ねじであり、従って本発明
の装置は前記２つの骨接合装置の間の連結を具体化し、
ほぼ一直線にする。
【００２４】前記素子９は、前記頭部の起こり得る位置
もしくは向きのいかんに関係なく、前記２つの素子９の
間の連結部材の様々の自由度により、前記頭部５に取付
けが容易である。実際には、おのおのの棒材１０が締付
けつば１１に嵌入して、その軸の回りを回転できる。そ
のうえ、前記２つのつば１１は、前記ねじ１２の共通軸
の回りを３６０度だけ互いに対してピポット状に旋回で
きる。
【００２５】いったん、前記棒材１０とつば１１を正し
く取付けると、前記ねじ１２、１本を簡単に回転させる
だけで装置を正しい位置に締付ける。
【００２６】最後に、本発明は上述の実施例だけに限定
されることはなくむしろその反対にあらゆる可能な応
用、特に締付けつば１１の取付けと、可能な配置に関し
て応用できる。
【００２７】図２と３に示すように、前記ねじ１１の軸
に垂直の２つの締付けつば１１の間の接触面をもたせる
代りに、前記ねじ１２の軸と、直角以外の角度をつけた
接触面をもたせて、前記環状素子９の位置決めの可能性
がさらに増える。
【００２８】本発明の装置の素子は、言うまでもなく、
外科的挿入手術用に承認された生物学的適合性のある材
料の範疇にあるものである。
【００２９】
【発明の効果】以上述べた通り本発明によれば、棒材の
捩れを防止し、簡単な構造で取付けが容易な脊柱骨接合
取付け用の相互連結装置を得ることができる。
【図面の簡単な説明】
【図１】周知の形式の脊柱骨接合装置の脊柱への挿入を
示す図である。
【図２】周知の形式の音叉型頭部茎ねじのほぼ正面射視
図である。
【図３】本発明に当て嵌まる装置のほぼ正面射視図であ
る。
【図４】図３の装置の上面図である。
【図５】図３と４の装置の環状素子に取付けられた図２
の形式のねじの軸方向部分破断図である。
【符号の説明】
１ 椎骨 ２ 一体化棒材 ３ 茎ねじ ４ ねじ込み疑似骨アンカレッジ ５ 音叉型円筒状頭部 ５ａ 枝 ５ｂ 枝 ６ 締付けねじ ７ 内部ねじ山 ９ 環状素子 １０ 締付け棒材 １１ 締付けつば １２ 共通締付けねじ １４ 筒状内面 １５ 面
フロントページの続き (73)特許権者 592227564 ジーン−フランコス．サクリステ フランス国．ピラ．サー．マー．エフ− 33115．ラ．チャペラ．フォレステーレ. スクウェアー．モーリス．ラヴュル．５ (72)発明者 ジーン−ルイス．ヴィグノード フランス国．タレンセ．エフ−33400. インパスィー．フランコス．オードイ ン．10 (72)発明者 ギルズ．ミッセナード フランス国．パリ．エフ−75016．カイ. ルイス．ブレリオット．94−96 (72)発明者 フィリッピ．ラプレスレ フランス国．ニュイリー．スー．セイー ネ．エフ−92200．ブルヴァード．ヴィ クター．ウゴー．32 (72)発明者 ジーン−フランコス．サクリステ フランス国．ピラ．サー．マー．エフ− 33115．ラ．チャペラ．フォレステーレ. スクウェアー．モーリス．ラヴュル．５ (56)参考文献 特開 平２−215455（ＪＰ，Ａ) 特開 平１−314564（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) A61B 17/58 310

Claims (5)

    (57)【特許請求の範囲】
  1. 【請求項１】 ２つの脊柱骨接合締付け具（３）の締付
    けが可能で、前記締付け具（３）がねじにより形成され
    る骨固定部（４）と、折れ曲り板もしくは同類の装置
    と、一体化棒材を固定し、前記棒材と締付けねじ（６）
    の双方を差し込む音叉型頭部（５）により形成される本
    体とからなり；前記相互連結装置を前記音叉型頭部
    （５）の２つの枝の１つのおのおの外側に取付けが可能
    な２つの環状素子（９）により構成することと；前記環
    状素子（９）のおのおのが、締付けつば（１１）に嵌込
    み可能の外部締付け棒材（１０）からなることと；前記
    装置の２つの締付けつば（１１）を前記つばを横断する
    共通ねじ（１２）によりねじ込むことを特徴とする脊柱
    骨接合締付け具の締付けが可能な相互連結装置。
  2. 【請求項２】 前記２つの締付けつば（１１）を少くと
    も一部分重置させ、前記締付け共通ねじ（１２）の軸の
    回りを自由に回転して、前記締付け棒材（１０）が前記
    ねじ（１２）の軸に垂直な２つの平行する平面の内側を
    移動させることを特徴とする請求項１の装置。
  3. 【請求項３】 前記２つの締付けつば（１１）を少くと
    も重置させ、互いの上でかつ、他方に対して、前記締付
    け共通ねじ（１２）の軸に対し９０度に等しくない角度
    をなす接触面により回転できることを特徴とする請求項
    １の装置。
  4. 【請求項４】 前記おのおのの環状素子（９）が、円筒
    状内面（１４）と面取り縁（１５）からなる請求項１乃
    至３のいずれか１項の装置。
  5. 【請求項５】 前記環状素子（９）の少くとも１つが外
    部棒材（１０）からなり、その軸が前記環状素子の中心
    を貫通することを特徴とする請求項１乃至４のいずれか
    １項の装置。
JP4149908A 1991-05-17 1992-05-18 脊柱骨接合締付けを容易にする相互連結装置 Expired - Lifetime JP2912087B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9106133 1991-05-17
FR9106133A FR2676354B1 (fr) 1991-05-17 1991-05-17 Dispositif de liaison verrouillable d'elements d'ancrage d'osteosynthese rachidienne.

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AU1637292A (en) 1992-11-19
KR0148803B1 (ko) 1998-10-01
JPH0716237A (ja) 1995-01-20
NO179356B (no) 1996-06-17
FR2676354B1 (fr) 1997-11-07
EP0514303B1 (fr) 1995-11-29
DE69206318T2 (de) 1996-07-18
NO179356C (no) 1996-09-25
CA2068675A1 (fr) 1992-11-18
AU644738B2 (en) 1993-12-16
EP0514303A1 (fr) 1992-11-19
FI922222A (fi) 1992-11-18
NO921922D0 (no) 1992-05-15
CA2068675C (fr) 1999-07-27
US5261907A (en) 1993-11-16
FR2676354A1 (fr) 1992-11-20
NO921922L (no) 1992-11-18
DE69206318D1 (de) 1996-01-11
ES2083133T3 (es) 1996-04-01
DK0514303T3 (da) 1996-04-09
FI922222A0 (fi) 1992-05-15
GR3019131T3 (en) 1996-05-31
ATE130745T1 (de) 1995-12-15
KR920021116A (ko) 1992-12-18

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