JPS63270050A - 変形脊髄の外科矯正用インプラント - Google Patents

変形脊髄の外科矯正用インプラント

Info

Publication number
JPS63270050A
JPS63270050A JP63065604A JP6560488A JPS63270050A JP S63270050 A JPS63270050 A JP S63270050A JP 63065604 A JP63065604 A JP 63065604A JP 6560488 A JP6560488 A JP 6560488A JP S63270050 A JPS63270050 A JP S63270050A
Authority
JP
Japan
Prior art keywords
rod
implant
surgical correction
spinal cord
deformed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP63065604A
Other languages
English (en)
Inventor
クラウス　ジールケ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OSUKOBAALE AG
Original Assignee
OSUKOBAALE AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by OSUKOBAALE AG filed Critical OSUKOBAALE AG
Publication of JPS63270050A publication Critical patent/JPS63270050A/ja
Pending legal-status Critical Current

Links

Classifications

    • 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
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/7004—Longitudinal elements, e.g. rods with a cross-section which varies along its length
    • A61B17/7008—Longitudinal elements, e.g. rods with a cross-section which varies along its length with parts of, or attached to, the longitudinal elements, bearing against an outside of the screw or hook heads, e.g. nuts on threaded rods
    • 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
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/7004—Longitudinal elements, e.g. rods with a cross-section which varies along its length
    • A61B17/7005—Parts of the longitudinal elements, e.g. their ends, being specially adapted to fit in the screw or hook heads
    • 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
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/7004—Longitudinal elements, e.g. rods with a cross-section which varies along its length

Landscapes

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

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、を柱側溝、を柱後湾およびを柱前湾等の変形
脊髄、とりわけ脊柱側湾を外科矯正するための、背側か
ら挿入することのできるインブラントに係る。
（従来の技術） １９６２年よりこのかたバリントン式引延ばしロッドは
周知となっている。この形式のロッドは、Ｌ端に多数の
のこぎり状ノツチを備えている。これらのこぎり状ノツ
チはフックを支えることができ、またフックとロッドの
間で力を一方向、すなわら引延ばし方向にのみ加えられ
るように構成されている。ロッドの下端には、固定フッ
ク用のストッパとして機能するカラーが設けられている
。
引延ばしロッドには、変形部の両側の位置に脊髄、とり
わけ脊柱側湾の変形を矯正する２つのフックが配置され
ている。
下側のフックは固定されており、上側のフックは変形脊
髄、とりわけ脊柱側湾を適切に矯正するのに必要な位置
まで移動される。
１９６１年よりこのかたバリントン式圧縮ロツドも周知
となっている。この形式のロッドは全長に渡ってナツト
を支えるためのねじ山を備えている。ナツトを用い、ロ
ッドに設けである孔をフックは滑って位置を変えること
ができる。これらフックは脊髄、とりわけ脊柱側湾変形
部の突出側に固定される。フックはお互いに位置を変え
られ、突出した変形部を除徐に短縮していき、変形部を
矯正していくことができる。
２種類のバリントン式ロッドは、背側から脊髄、とりわ
け脊柱側湾変形部に引延ばし力Ｊ３よび圧縮力を加えて
矯正を行なう装置を構成している。
また腹側減捻を椎固定手術（ｖｅｎｔｒａｌｄｅｒｏｔ
ａｔｉｏｎ　５ｐｏｎｄｙｌｏｄｃｓｅ　Ｖ　、　Ｄ　
、　Ｓ　、として知られている）に用いられる矯正用イ
ンブラントも周知となっている。この矯正用インブラン
トはねじの付いた圧縮ロッドからなり、圧縮ロッドに沿
ってナツトの位置を変えることができる。これらのナツ
トは、骨ねじ、すなわち、ボーンスクリューの凹所内に
ある円筒状部分に嵌まるようになっている。ねじロッド
上で骨ねじの位置を変えることにより、変形部の湾曲を
減少させてい（ことができる。このＶ、Ｄ、Ｓ、装置は
腹側からの挿入に特に適している。この装置を背側経育
椎基（ｄｏｒｓａｌ　ｔｒａｎｓＩ）ｅｄｉｃｔｌｌａ
ｒ　’）に使用する場合、すなわち椎体のアーチ（ａｒ
ｃｈ）の経路に沿って使用する場合には、を椎を挟む側
すなわち￥７椎の両側に使用する必要がある。
（課題を解決するための手段） 本発明の目的は、特に脊髄、とりわけ脊柱側湾変形部の
背面を外科矯正するインブラントを百１示−〒〒ること
にあり、このインブラントを用いれば脊髄、とりわけ脊
柱側湾変形部に引延ばしりＪおよび圧縮力を加えること
ができる。
本発明の別の目的並びに利点は、添付図面に基づいｌＣ
以下の説明から明らかである。
（実施例） 図面は、円筒状の中央部分３に続く引延ばし用の上側ラ
チェット部分２とねじ部分４とを備えている引延ばし圧
縮ロッド１を示している。円筒状部分とねじ部分がつな
がった位置にはカラー５が位置している。ラチェット部
分２ののこぎり状円周ノツチ７は上部に向けて円錐状に
広がり、端が平らな表面８になっている。従って、フッ
ク６をロッドに沿って動かせば、一方向の力だけを得る
ことができる。
この図面には、２つまたはそれ以上の７ツク６のうらの
１つだけが示されている。これらフックの間で引延ばし
が行なわれる。フックはそれ自体周知であり、例えばニ
ドワード形式のものや西独特許第３．３０６．６５７号
に示さているようなフックを用いることができる。フッ
ク６は、図面に概略的に示されている２つのＶ！椎骨９
の間に周知の技術を用いて挿入される。矢印１０は引延
ばしの方向を表わしている。
ロッドの円筒状部分３の直径はラチェット部分２の直径
よりも小さい。
ねじ部分４には、ヘッド１４をナツト１２により保持し
て複数の骨ねじ１１を固定することができる。この骨ね
じは２つだけが示されている。ヘッドを備えている骨ね
じはそれ自体周知であり、骨ねじをロッドに固定するに
当たり種々の方法を用いて０ツドと骨ねじの間に自由度
が得られるようにしである。個々の骨ねじはそれぞれの
を椎骨に固定され、ナツトの作用によりを椎骨を矢印１
３・で示すように圧縮することができる。上方から見て
最初のナツトは場合によってはカラー５で置き換えるこ
ともできる。もちろんのこと、複数のν１ねじとナツト
を備えた同一の装置を用いて複数のを椎骨の引延ばしを
行なうこともできる。
本発明に係る引延ばし圧縮ロッドを利用して、重連した
Ｖ、Ｏ，Ｓ法に改良を加え、椎体のアーチ（ａｒｃｈ）
の経路を通じてねじをを椎骨の「経を１ｔ７１　（ｔｒ
ａｎｓｐｅｄｉｃｕｌａｒ）　Ｊに連結し、圧縮治療と
共に引延ばし冶ｉｆｆ　ｂ同時に行なえるようにするこ
ともできる。この方法によれば、１つのロッドを用いて
少なくとも当該ロッドの下側端部の位置で選択的に多数
の分節骨を治療することができる。
［１ツドの上側部分の働きにより引延ばし力を加えるこ
とができ、そしてこの引延ばし力は、ロッドの下側端部
の位置では分節骨に圧縮矯正力を動かせることに関連し
てのみ加えることができる。Ｄラドの上側部分で必要な
補強部を延長して骨の矯正を行なう場合には、ロッドの
下側部分は短くされる。
こうして１本のロッドを用い、背側経を椎基（ｄｏｒｓ
ａｌ　ｔｒａｎｓｐｅｄｉｃｕｌａｒ　）の引延ばしお
よび圧縮矯正治療を行なうことができる。既に述べたよ
うに、本発明に係るロッドには多種多様なフック・ねじ
５Ａ置を使用することができる。
【図面の簡単な説明】
図面は、埋込み位置にある本発明に係るインブラントの
概略図である。 １・・・・・・ロッド ２・・・・・・上側ラチェット部分 ３・・・・・・円筒状の中央部分 ４・・・・・・ねじ部分 ５・・・・・・カラー ６・・・・・・フック ７・・・・・・のこぎり状ノツチ ８・・・・・・平らな表面 ９・・・・・・脊椎骨 １１・・・・・・骨ねじ

Claims (2)

    【特許請求の範囲】
  1. （１）　変形脊髄、とりわけ脊柱側湾、脊柱後湾および
    脊柱前湾の外科矯正用インプラントにおいて、当該イン
    プラントはロツドを有し、当該ロツドは、一方の端部に
    上部へ向けて円錐状に広がり、端が脊髄フツクを支える
    平らな表面になつているのこぎり状円周ノツチの形成さ
    れたラチエツト部分を備えており、しかもこのインプラ
    ントは、ねじ部分に続く円筒状部分を有しており、当該
    ねじ部分はナツトによつて固定された骨ねじのヘツドを
    支えるように構成され、前記ロツドのラチエツト部分を
    用いて引延ばしを行ない、また前記ロツドのねじ部分を
    用いて変形した脊髄の圧縮並びに引延ばしを行なう変形
    脊髄の外科矯正用インプラント。
  2. （２）　前記ロツドは、前記円筒状部分とねじ部分の間
    に配置されたカラーを備えている請求項１に記載の変形
    脊髄の外科矯正用インプラント。
JP63065604A 1987-03-19 1988-03-18 変形脊髄の外科矯正用インプラント Pending JPS63270050A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8704134U DE8704134U1 (de) 1987-03-19 1987-03-19 Als Distraktions- und Kompressionsstab ausgestaltetes Implantat
DE8704134.0 1987-03-19

Publications (1)

Publication Number Publication Date
JPS63270050A true JPS63270050A (ja) 1988-11-08

Family

ID=6806067

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63065604A Pending JPS63270050A (ja) 1987-03-19 1988-03-18 変形脊髄の外科矯正用インプラント

Country Status (4)

Country Link
US (1) US4854304A (ja)
EP (1) EP0284559A1 (ja)
JP (1) JPS63270050A (ja)
DE (1) DE8704134U1 (ja)

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EP0284559A1 (en) 1988-09-28
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