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JPH05146451A - 脊椎骨合成棒固定装置 - Google Patents

脊椎骨合成棒固定装置

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Publication number
JPH05146451A
JPH05146451A JP3075960A JP7596091A JPH05146451A JP H05146451 A JPH05146451 A JP H05146451A JP 3075960 A JP3075960 A JP 3075960A JP 7596091 A JP7596091 A JP 7596091A JP H05146451 A JPH05146451 A JP H05146451A
Authority
JP
Japan
Prior art keywords
rod
screw
fixing device
tightening
ring
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.)
Granted
Application number
JP3075960A
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English (en)
Other versions
JP2524903B2 (ja
Inventor
Vigneau Jean-Louis
ジヤン−ルイ．ビグノー
Rapurezuuru Philippe
フイリツペ．ラプレズール
Sacliste Jean-Francois
ジヤン−フランソワ．サクリスト
Misenard Gilles
ジル．ミゼナード
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Individual
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Individual
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26227857&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPH05146451(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from FR909001634A external-priority patent/FR2657776B2/fr
Priority claimed from FR9003694A external-priority patent/FR2659546B1/fr
Application filed by Individual filed Critical Individual
Publication of JPH05146451A publication Critical patent/JPH05146451A/ja
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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
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
    • A61B17/704—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other the longitudinal element passing through a ball-joint in the screw head
    • 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
    • A61B17/7001—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
    • 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
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8695—Washers

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Neurology (AREA)
  • Surgery (AREA)
  • Molecular Biology (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Surgical Instruments (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Prostheses (AREA)
  • Earth Drilling (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Golf Clubs (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Massaging Devices (AREA)

Abstract

(57)【要約】 【目的】 茎ねじの軸に対し棒を必ずしも垂直にする必
要のない棒固定装置を提供するものである。 【構成】 骨合成棒(6) にねじ山をつけ、また締め付け
ねじ(7) と前記外被(5)の底部との間に挿入された割り
リング(9) を設ける。前記締め付けねじ(7) と前記底部
の方向に向けられた前記リングの対向外面(10)が凸状で
締め付けねじ(7)の先端に設けられた相補的凹状面（1
1、12）に収容される。また前記リング(9)が前記ねじ
(1) の軸に対し前記棒(6) の一定角度の隙間を与えてか
ら前記ねじ(7) の締め付けを行う。

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、茎（ｐｅｄｉｃｕｌａ
ｒ）固定用調節可能の脊椎器具で前記脊椎の生理的湾曲
の順応と回復を可能にさせる器具に関する。
【０００２】
【従来の技術】一般的に、接合茎ねじは棒または板によ
って移植されるもので、前記ねじはあらゆる場合、前記
棒または板に対して完全に垂直にする必要がある。
【０００３】
【発明が解決しようとする課題】しかしながら、従来技
術ではこのように垂直にすることはきわめて困難であっ
た。
【０００４】本発明の目的は、この欠点を克服して、前
記茎ねじの軸に対して棒を調節できる棒固定装置を提供
することである。
【０００５】
【課題を解決する手段】この趣旨で、本発明では、取り
付けられる棒を収容する２つの分岐部が形成されるダイ
ヤペーソン形の頭部の備わった形式の茎棒上に脊椎骨合
成棒を取り付ける装置において、前記棒がその外被の中
で取り付けねじにより締め付けられ、前記棒上に取り付
けられまた前記締め付けねじと前記外被の底部との間に
割りリングが挿入され、前記締め付けねじと前記底部の
方向に向いた前記割りリングの外部対向面が凸状面であ
り、かつ前記締め付けねじの先端と、前記棒の収容外被
の底部上に設けられた相補的凹状面で支えられ、前記リ
ングが前記ねじの軸に対し一定の角度隙間を与えてから
前記ねじの締め付けをすることを要旨とする。
【０００６】
【作用】前記装置は、前記棒により形成された角度を前
記茎ねじの特に矢状面にある軸を用いての調節と、前記
棒を前記締め付けねじの圧力をうけて変形、固定させる
前記割りリングによる所望の位置における締め付けを可
能にする。
【０００７】
【実施例】次に、本発明の装置の実施例を添付図面につ
いて詳述する。
【０００８】図１は既知のタイプの茎ねじを１で示す。
前記茎ねじは、円錐スクリュー２と、オジー形先端３、
および両側面に穿孔したダイヤペーソン形円筒頭部４と
から成る。より詳述すれば、前記頭部４は、２つの対向
する平行分岐部４ａと４ｂから成り、前記スクリュー２
の軸に垂直の軸でスカロッピングまたは外被５を集合的
に形成し、略円筒形になった棒または一体素子６の収容
ができる。このような構造は周知であり、たとえば英国
特許第ＧＢ−２，１７３，１０４号に記載されている。
【０００９】前記分岐部４ａおよび４ｂの対向する内面
は円筒状で、それにねじ山を次の方法、すなわち、前記
棒６をその外被中に収容して、欧州特許第ＥＰ−０，０
１０，５２７号記載のねじ締め付け装置と同一の方法で
締め付ける仕方でねじ切りされる。
【００１０】前記頭部４は前記分岐部４ａと４ｂの上端
を蔽うキャップ８を支持する。
【００１１】本発明によれば、前記棒６の締め付けは、
外被５に収容され、かつ前記締め付けねじ７により締め
付けられる棒６の上を自由に滑動できる前記割りリング
９により確実になる。
【００１２】前記リング９と、前記締め付けねじ７およ
び前記外被５の前記リング９と接触する部分は特定の方
法で互いに適合するようつくられている。
【００１３】示された実施例において、前記リング９
は、（図４参照）前記締め付けねじ７の円錐部分の先端
に設けられた凹状球面１１（図６参照）と先ず相補し合
い、次に前記棒６の分岐部４ａと４ｂの間の収容外被５
の底部に設けられた凹状球面１２（図３参照）と相補し
合う外部凸状球面１０から成る。
【００１４】前記リングをその面が、ねじ１の軸１３
と、前記棒６を収容する外被５の軸により画定される前
記ねじ１の矢状面とほぼ垂直（図２参照）になるよう配
置する。
【００１５】前記リングには直線スロット１４（図４お
よび図５参照）が設けてあり、前記棒６の直径よりも僅
かに大きい１面の内部円筒面１５が備えられる。
【００１６】リング９が取り付けられた棒を前記茎ねじ
１の外被５の内側に、このねじを適当な骨質部に入れた
後挿入する。前記リング９を図２に示すように前記外被
５、１２と係合させ、その後、前記締め付けねじ７を前
記分岐部４ａと４ｂの間の隙間にねじ込む。前記キャッ
プ８を前記２分岐部４ａおよび４ｂの両側に跨るように
単純に係合させて配置し、その後、前記棒６を前記矢状
面（図２参照）の内側で適当に適応させ、前記割りリン
グ９を前記締め付けねじ７で締め付けることで所望の方
向づけをして締め付ける。前記棒６の角度隙間は、たと
えば、図２で示すように、前記ねじ１の軸１３に垂直の
位置の周りで１５度である。
【００１７】前記棒６の調節には、前記リングを、前記
棒を画定する前記両球面１１と１２の上を滑動させるこ
とである。
【００１８】前記棒６の自由角度の隙間を与えるために
は、２つの対向する入口の正面で前記外被５の底部を１
５で示された場所（図２および３参照）で僅かにくぼみ
を作る。前記締め付けねじ７（図６参照）の先端の斜切
断面１６は前記棒６の前記締め付けねじ７（図６参照）
に対するあそびを確実にする。
【００１９】前記キャップ８は、前記棒６のあそびのた
めの２つの対向するスカロッピング１７と、前記締め付
けねじ７を、前記ねじ７の上面に設けられた６側面を有
する中空くぼみ１９を用いて締め付ける六角レンチのよ
うなレンチの通路になる中心抜き孔１８とから成る（図
２）。
【００２０】前記キャップの役目は、前記締め付けねじ
の締め付けに、前記２分岐部４ａと４ｂの離間が出るこ
とを主として防げることである。前記キャップ８は、前
記ねじ１の材料または前記分岐体４ａと４ｂの寸法、特
にその厚さがそうさせる場合、押し込むことができる。
【００２１】前記締め付けねじ７を完全に締め付ける
と、前記棒が選ばれた位置にある前記リング９により締
め付けられることになる。好ましくは開口部１４を図２
が示すように横方向になるよう配置することである。
【００２２】前記棒はこのようにして、その方向づけな
らびにその軸の周りの回転に関し、ともに完全に締め付
けられる。
【００２３】前記棒６は、たとえば、その両先端に６面
中空くぼみ（図７参照）を備える平滑連動素子もしくは
可撓性折畳円筒ストランド製素子でも差支えない。
【００２４】孔もしくはくぼみ２０を設けることで、相
補的形状レンチが脊柱の回転不良により影響を及ぼす目
的で導入できるようになる。
【００２５】
【発明の効果】以上述べた通り本発明によれば、前記棒
６をその軸上同一方向に回転するレンチと連動させるこ
とで、この棒は回転するようになり、従って脊椎がその
鉛直軸に沿って回転する。
【００２６】最後に、本発明は、単に上述の実施例に限
定されないばかりでなく、考えられるすべての変形、特
に、間にねじ込まれる前記リング９と、前記面１１およ
び１２の凸状および凹状面それぞれの形状と配置に関す
る、また前記対向分岐部４ａと４ｂに、もしくは前記ね
じの頭部４の上に取り付けられる片にねじ込みが可能な
前記締め付けねじ７に関するすべての応用変形にも適用
される。同様に、前記リング９とスロット１４の形状と
寸法も本発明の構成から逸脱することなく、変えること
ができる。
【００２７】このほか、前記棒６の先端に、図７に示す
ように内側もしくは外側角形状をもたせ、この形状の導
管がｎ形側面の多角形のようなもので、前記棒がその軸
上で回転できるレンチの導管に適当に適応するものであ
ればよい。
【図面の簡単な説明】
【図１】本発明に従う装置の分解図である。
【図２】図１の装置で、キャップを外して組立てられた
図である。
【図３】本発明による茎ねじの矢状面に沿う断面図であ
る。
【図４】本発明による割りリングの斜視図である。
【図５】図４のリングの横前面図である。
【図６】本発明による締め付けねじの軸方向破断図であ
る。
【図７】図１の棒の先端の拡大図である。
【符号の説明】
１ 茎ねじ ２ 円錐スクリュー ３ オジー形先端 ４ ダイヤペーソン形円筒頭部 ４ａ、４ｂ 分岐部 ５ 外被 ６ 一体素子（棒） ７ 締め付けねじ ８ キャップ ９ 割りリング １０ 外側凸状球面 １１ 凹状球面 １２ 凹状球面 １３ 軸 １４ 直線スロット １５ 内側円筒面 １６ 斜切断面 １７ スカロッピング １８ 中心抜き孔 ２０ くぼみ
フロントページの続き (71)出願人 591071838 ジヤン−フランソワ．サクリスト フランス国．33115．ル．ピラ．スー．メ ール．ラ．チヤペル．フオレステイエー ル．スクエアー．モーリス．ラベル．５ (71)出願人 591071849 ジル．ミゼナード フランス国．75016．パリ．クワ．ルイ. ブレリオ．94−96 (72)発明者 ジヤン−ルイ．ビグノー フランス国．33400．タレンス．インパツ セ．フランソワ．オードウイン．10 (72)発明者 フイリツペ．ラプレズール フランス国．92200．ニユイリー．スー. セーヌ．ブールバール．ビクトール．ユー ゴー．32 (72)発明者 ジヤン−フランソワ．サクリスト フランス国．33115．ル．ピラ．スー．メ ール．ラ．チヤペル．フオレステイエー ル．スクエアー．モーリス．ラベル．５ (72)発明者 ジル．ミゼナード フランス国．75016．パリ．クワ．ルイ. ブレリオ．94−96

Claims (7)

    【特許請求の範囲】
  1. 【請求項１】 前記ねじが、締め付けねじ(7) により取
    り付けられる棒(6)の外被(5) の中で締め付けられる前
    記棒(6) を集合的に収容する２分岐部（4a、4b) を形成
    するダイヤペーソン形頭部(4) を備える、茎ねじ(1) 上
    に脊椎骨合成棒を固定する装置において、前記棒(6) の
    上に取り付けられ、かつ前記締め付けねじ(7) と前記外
    被(5) の底部との間に挿入された割りリング(9)から成
    り、前記締め付けねじ(7) と前記底部の方向に向けられ
    た前記リングの対向する外面(10)は凸状で、前記締め付
    けねじ(7) の先端と、前記棒(6) の収容外被(5) の底部
    の上に設けられた相補的凹状面（11、12）で支えられ、
    前記リング(9) は前記ねじ(1) の軸に対して前記棒(6)
    の一定角度隙間を与えてから前記ねじ(7) の締め付けを
    行うことを特徴とする脊椎骨合成棒固定装置。
  2. 【請求項２】 前記締め付けねじ(7) と前記棒(6) の収
    容外被(5) の底部の前記凸状(10)と凹状（11、12）面は
    球面であることを特徴とする請求項１の脊椎骨合成棒固
    定装置。
  3. 【請求項３】 前記締め付けねじ(7) にはその中心部分
    に斜切円錐先端を備えて、前記凹状面(11)を形成するこ
    とを特徴とする請求項１または２の脊椎骨合成棒固定装
    置。
  4. 【請求項４】 前記棒(6) の収容外被(5) の底部に、前
    記外被の入口の正面と、かつ前記凹状面(12)の両端にあ
    そびくぼみ(15)を設けることを特徴とする請求項１乃至
    ３いずれか１項の脊椎骨合成棒固定装置。
  5. 【請求項５】 前記ねじ頭部(4) の分岐部（4a、4b）と
    前記締め付けねじ(7) は、前記締め付けねじの調節用く
    ぼみにとどく中心孔(18)を備えるキャップ(8) で蓋をし
    てあることを特徴とする請求項１乃至４いずれか１項の
    脊椎骨合成棒固定装置。
  6. 【請求項６】 前記キャップ(8) の縁部に対向スカロッ
    ピング(17)を設けて前記棒(6) に自由あそびを保証する
    ことを特徴とする請求項５の脊椎骨合成棒固定装置。
  7. 【請求項７】 前記棒(6) のおのおのの先端に中空もし
    くはレリーフ付形(20)を施して、適当な大きさに作った
    レンチの助けをかりて前記棒をその軸の周りで回転でき
    るようにすることを特徴とする請求項１乃至６いずれか
    １項の脊椎骨合成棒固定装置。
JP3075960A 1990-02-08 1991-02-08 脊椎骨合成棒固定装置 Expired - Lifetime JP2524903B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR909001634A FR2657776B2 (fr) 1989-02-09 1990-02-08 Instrumentation rachidienne pour fixation pediculaire universelle par vis diapason a reglage micrometrique.
FR99999999999999999999 1990-03-19
FR9003694A FR2659546B1 (fr) 1990-03-19 1990-03-19 Dispositif de fixation orientable de tiges d'osteosynthese rachidienne.

Publications (2)

Publication Number Publication Date
JPH05146451A true JPH05146451A (ja) 1993-06-15
JP2524903B2 JP2524903B2 (ja) 1996-08-14

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EP (1) EP0441729B1 (ja)
JP (1) JP2524903B2 (ja)
AT (1) ATE99907T1 (ja)
AU (1) AU649995B2 (ja)
CA (1) CA2035348C (ja)
DE (2) DE69100953T2 (ja)
DK (1) DK0441729T3 (ja)
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FI (1) FI102721B1 (ja)
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FI102721B (fi) 1999-02-15
DE69100953D1 (de) 1994-02-24
CA2035348A1 (fr) 1991-08-09
DE69100953T2 (de) 1994-06-16
AU649995B2 (en) 1994-06-09
HK101296A (en) 1996-06-21
CA2035348C (fr) 2000-05-16
DK0441729T3 (da) 1994-05-02
ES2048574T3 (es) 1994-03-16
AU7082391A (en) 1991-08-15
FI910564A (fi) 1991-08-09
MY105455A (en) 1994-10-31
JP2524903B2 (ja) 1996-08-14
EP0441729A1 (fr) 1991-08-14
NO910459D0 (no) 1991-02-06
US5176680A (en) 1993-01-05
DE441729T1 (de) 1992-10-15
NO175703B (no) 1994-08-15
FI102721B1 (fi) 1999-02-15
ATE99907T1 (de) 1994-01-15
NO175703C (no) 1994-11-23
NO910459L (no) 1991-08-09
EP0441729B1 (fr) 1994-01-12
FI910564A0 (fi) 1991-02-06

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