JPH08206143A - ボーンプレートとボーンスクリュー - Google Patents

ボーンプレートとボーンスクリュー

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Publication number
JPH08206143A
JPH08206143A JP7278218A JP27821895A JPH08206143A JP H08206143 A JPH08206143 A JP H08206143A JP 7278218 A JP7278218 A JP 7278218A JP 27821895 A JP27821895 A JP 27821895A JP H08206143 A JPH08206143 A JP H08206143A
Authority
JP
Japan
Prior art keywords
bone
screw
bone plate
plate
threaded
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
JP7278218A
Other languages
English (en)
Inventor
Linda Trebing
トレビング リンダ
John Thalgott
ザルゴット ジョン
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.)
AO Technology AG
Original Assignee
Synthes AG Chur
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 Synthes AG Chur filed Critical Synthes AG Chur
Publication of JPH08206143A publication Critical patent/JPH08206143A/ja
Pending legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86Pins or screws or threaded wires; nuts therefor
    • A61B17/8605Heads, i.e. proximal ends projecting from bone
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/14Surgical saws ; Accessories therefor
    • A61B17/15Guides therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17Guides or aligning means for drills, mills, pins or wires
    • A61B17/1728Guides or aligning means for drills, mills, pins or wires for holes for bone plates or plate screws
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7059Cortical plates
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/80Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8061Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86Pins or screws or threaded wires; nuts therefor
    • A61B17/8625Shanks, i.e. parts contacting bone tissue
    • A61B17/863Shanks, i.e. parts contacting bone tissue with thread interrupted or changing its form along shank, other than constant taper
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17Guides or aligning means for drills, mills, pins or wires
    • A61B17/1739Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
    • A61B17/1757Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the spine
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/80Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8004Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/80Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8052Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
    • A61B17/8057Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded the interlocking form comprising a thread

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

Abstract

(57)【要約】 【課題】 生体と調和する材料から本体を構成した、特
に胸腰部前方のロックプレートとして有用なボーンプレ
ートを提供する。 【解決手段】 本発明のボーンプレートは、円筒状の骨
に一致するよう骨に当てる下面は彎曲しており、上面は
2つの突き合わせ面を有している。ボーンプレートの縦
長の本体の前縁は切り込みと、その切り込みの端にねじ
孔とを有し、そして後縁は凹形となっており、それの端
にねじ孔を有している。仮止めのスクリューを受ける少
なくとも一つの、ねじを切っていない孔を更に備えてい
る。突き合わせ面の各々に少なくとも一つあるねじ孔の
軸は斜めになっている。

Description

【発明の詳細な説明】
【0001】
【発明の属する技術分野】本発明は、上面と骨に当てる
下面とを有するボーンプレートに係るものである。
【0002】骨折治療、腫れそして変性状態を含む様々
な脊柱の状態を治療するとき、脊柱本体もしくは部分の
除去に続いて、脊柱の前柱を固定し、そして安定化する
ことが必要である。
【0003】開胸術、胸腹部もしくは腹膜の後ろから接
近して上述の除去を行うと、これに続いて腸骨の稜もし
くは腓骨の支柱移植を利用して正常な構造を再構築す
る。患者が急激な運動をしてもよいような仕方でその移
植片を固定し、安定化するのが望ましい。この目的はボ
ーンプレートにより達成できる。しかし、これを最適な
仕方で達成するには、ボーンプレートを当てる骨とボー
ンプレートとがしっくり一致していることが必要であ
り、ボーンプレートの断面はできるだけ薄く、しかもそ
れに患者が重量や応力をかけても破損しないように脊柱
へしっかり固定していることが必要であり、そして外科
医にとって都合のよい仕方で配置、固定できることが必
要である。
【0004】このような条件でボーンプレートを脊柱本
体へ、そして時には移植片へ固定することが必要であ
る。
【0005】
【発明が解決しようとする課題】これまでは、ボーンプ
レートのねじ孔を通してスクリュー(ねじ)を骨にねじ
込んでボーンプレートを取り付けていた。この場合、表
層部分と網状組織部分との両方で脊柱にスクリューをし
っかり固定するだけではなく、スクリューをボーンプレ
ートにしっかりと固定して骨が変化してもスクリュー/
ボーンプレートの結合が緩まないようにすることが望ま
しい。
【0006】本発明の目的は、ステンレススチール、チ
タンもしくはチタン合金のような生理的に受け入れ得る
材料から本体を構成した、胸腰部前方のロックプレート
として特に有用なボーンプレートを提供することであ
る。
【0007】
【課題を解決するための手段】本発明に従って、この目
的は請求項1、4、7及び12に記載の特徴により達成
される。
【0008】ボーンプレートは縦方向に彎曲しているの
が好ましく、それの前縁の切り込みによって鉗子もしく
は同様な器具を使って簡単に掴んで扱え、それの後縁は
全体として凹形となっており、前縁と後縁の端にはねじ
を切ったねじ孔を設けてある。ねじを付けてはいないが
骨折をなくすためカム面を持っている別のねじ孔を設け
るのが好ましい。このようなねじを付けていない孔を使
って仮のスクリューでボーンプレートを正しい位置に保
持しておいて、恒久的なねじ孔を骨に正確な位置に穿孔
する。ボーンプレートの縁の端におけるねじ孔の端で、
ねじ孔の軸は相互に傾斜しているのが好ましい。
【0009】本発明が更に含んでいるボーンスクリュー
は上述のボーンプレートと使用するのに特に適してお
り、頭部と先端とを有するねじを切った軸から成り、軸
の先端は単一スタート・バットレスねじ山の部分となっ
ており、軸の頭部は2スタート・マシーンスクリューね
じ山の部分となっている。ねじ山は一定のピッチとなっ
ている、すなわち回転毎のねじ山の直線もしくは軸方向
のリードもしくは進みはねじの長さにわたって一定であ
る。軸の最先端は尖っていて、ねじを切っておらず、セ
ルフ・タッピングのために端に縦溝を付けてある。
【0010】本発明が更に含んでいる骨固定システムは
プレートと前述のスクリューとを含んでいる。好ましく
は、網状組織の骨のねじ山、すなわちバットレスねじ山
の大きな直径は、ねじを切ってあるプレートの孔の雌ね
じの最小直径よりも大きくなっていて、スクリューのマ
シーンねじ山の開始点はプレート孔の内側ねじと揃えら
れている。
【0011】別の観点から見ると本発明は、ねじを切っ
たねじ孔とねじを切っていないねじ孔とを有するボーン
プレートを骨へ当てる方法を含んでおり、この本発明の
方法によればボーンプレートを骨の表面に隣接して位置
決めし、ねじを切っていない孔に通したボーンスクリュ
ーによってボーンプレートを骨の表面に仮止めし、それ
からねじを切ったねじ孔にスクリューを挿入して該ねじ
孔のねじに係合させることによって骨へボーンプレート
を固定する。
【0012】
【実施例】本発明を添付図を参照して以下に詳述する。
【0013】図1〜3を参照する。本発明のボーンプレ
ートはステンレススチール、チタンもしくはチタン合金
のような生体と調和する金属から成る本体1から成り、
面取りして丸められた縁2を有する。ボーンプレートの
後縁3は僅かに彎曲して脊柱の形に沿うようになってい
る。前縁4は内側に凹んで、切り込み5を付けられてい
て、鉗子のような器具でボーンプレートを扱い易いよう
にしてある。図3に示すように両縁は滑らかに丸められ
ている。
【0014】図3〜5に示すように、ボーンプレートの
横断面は骨の表面に沿うように彎曲している。ボーンプ
レートの上面6は2局面もしくは双面となっている、す
なわち前面7と後面8とは出会って中央尾根9を形成し
ており、これは図1に示すようにボーンプレートの縦長
方向に伸びている。骨に当てるボーンプレートの下面1
0は図2〜5に示すように、滑らかに、彎曲した面、好
ましくは円筒状である。
【0015】ボーンプレートには複数のねじを切ったね
じ孔があけてある。図1と図2では5つのねじを切った
ねじ孔11−15をあけて、スクリューを止めるように
している。ボーンプレートの上面は全部面取りされてい
る。ねじ孔11は中心に配置されている。ねじ孔12、
13はボーンプレートの後側の一番端に位置し、ねじ孔
14、15はボーンプレートの前側で切り込みの端に位
置している。
【0016】ねじ孔14、15の軸はボーンプレートの
前面7に垂直であり、そして孔12、13の軸は後面8
に垂直である。従って、隣接した孔12、15と13、
14とは軸が相互に傾斜している、すなわち、ある角度
で傾いている。これによって円錐状のボーンプラグとな
って、負荷がかかってもボーンプレートは外れにくくな
っている。
【0017】中心孔11はボーンプレートに真っ直ぐに
穿孔される、すなわちそれの軸はボーンプレートの中点
でボーンプレートの円筒状の底面に接する面に垂直であ
る。
【0018】ボーンスクリューのためのボーンプレート
の孔の数は変わってもよいことは理解されよう。ボーン
プレートの中央に沿って幾つかの、例えば全部で3個の
11のような孔があってもよい。そのようなボーンプレ
ートを図9に示す。
【0019】更に、ボーンスクリューのための孔に加え
て、仮のスクリューのための2個の孔16、17をボー
ンプレートにあけてもよい。図6に示すように、これら
の孔16、17はカム面18をつけて長くなっていて、
移植材を圧縮するのを助けるのにこの孔を使用できる
(アルゲバ等の31,628を参照)。
【0020】本発明のボーンプレートは、図7、図8に
示すタイプのボーンスクリューと共に使用するのが好ま
しい。これらの図を参照する。本発明のボーンスクリュ
ーは頭部20と先端21とを有する軸19から成る。軸
19にはねじを付けてあり、下方部分22(すなわち、
先端近くの部分)には1スタート・バットレスねじ山2
3を付けてあり、上方部分24(頭部近くの部分)には
2スタート・マシーンスクリューねじ山25を付けてい
る。これらのねじ山はスクリューの全長にわたって一定
の、連続したリード、すなわち進みとなるようになって
いる。スクリューの一回転毎の軸方向の進みが両方のね
じ山部分で同じであるという意味でピッチは両方のねじ
山で一定である。本発明のボーンプレートと一緒に使用
するときは、ボーンプレートの孔11−15の内側ねじ
はスクリューのねじ山と合うように選択した2スタート
ねじ山にする。ピッチが一定であるので、ボーンプレー
トは骨の上の最初の位置にあって、そしてスクリューが
ボーンプレートの孔を通って進んでいくとき、骨の外で
ねじ山をつぶすという傾向はない。
【0021】図8に示すように、マシーンねじ山の長さ
は骨の表層26に係合するに足りる長さであり、バット
レスねじ山は網状組織の骨27に係合する。
【0022】好ましくは網状組織の骨のねじ山、すなわ
ちバットレスねじ山の大きな直径はボーンプレートの雌
ねじ山の最小直径よりも大きく、そのためスクリューの
マシーンねじ山の始点はボーンプレートのねじ山と簡単
に揃えられる。
【0023】スクリューの先端は28で示すように円錐
状に尖っていて、セルフ・タッピングの縦溝29(通常
3本)が付けられている。スクリューの頭部の底面30
は円錐状であるのが好ましい。上面は球状となっている
のが好ましく、レンチなどの器具を受ける六角形のソケ
ット31のような手段を講じている。
【0024】本発明のボーンプレートとボーンスクリュ
ーの典型的使用を図9に示す。この図に示すように、脊
柱の一部を除去して、移植片37を挿入し、そして本発
明のボーンプレート38を移植場所を横断して当てて脊
柱の前部をしっかり固定する。
【0025】外科医が脊柱を露出し、脊柱の端を減圧
し、そして移植材を当てるというやり方を採ったとする
と、ボーンプレートのねじを切った中心孔11’にねじ
つきドリル・ガイドを挿入する。このドリル・ガイドは
適当なものでよい。図10に一つの適当な形を示す。上
部32にギザギザをつけて扱い易いようにし、内側のソ
ケット33はレンチ等の器具を受け入れるようにしてい
る。下部34の先端35の直径は小さくなっている。こ
の先端にはねじを切ってボーンプレートの孔11−15
の内側のねじ山と係合するようにしている。くり抜き孔
36がガイドを貫通していて適当なドリル(図示せず)
を受けるようになっている。
【0026】このドリルガイドを挿入して、ドリルガイ
ドを把手としそして鉗子もしくはプレートホルダーを使
って脊柱本体の後部にボーンプレートを位置決めする。
脊柱本体に総てのスクリューを配置することに注意しな
ければならない。スクリューが脊柱管に侵入していない
ことを後でX線で確かめるべきである。
【0027】ドリルガイド、例えばクラウ特許4,49
3,317に示す設計のガイドを使って、仮のねじ孔1
6’、17’を通して穿孔する。それから仮のスクリュ
ーを挿入して、締める。これらの仮のスクリューが移植
部を圧縮し、そしてボーンプレートを骨に固定する。そ
れからドリルガイドを中心孔11’から取り除き、ボー
ンプレートの後部孔にドリルガイドを挿入する。それか
ら、後部孔を通して穿孔する。本発明のボーンスクリュ
ーを後部孔に挿入する。
【0028】仮スクリューを孔16’、17’から抜き
取る。それからねじを切ったドリルガイドを前部孔に挿
入し、穿孔し、ガイドを取り除き、そして本発明のボー
ンスクリューを挿入する。
【0029】所望ならば、上述の手順で、追加のボーン
スクリューを中心孔に挿入して、移植部を固定する。
【0030】本発明の特定のボーンプレートと関連して
本発明のボーンスクリューを説明したけれども、例えば
前部の脊柱プレートと後部の脊柱プレートと脊柱ロッド
・コネクタとを含む、適当にねじを切ったねじ孔を有す
るボーンプレートを様々な他の移植材と使用すると有利
であることは当業者には明らかであろう。
【図面の簡単な説明】
【図1】 本発明のボーンプレートの上面図である。
【図2】 本発明のボーンプレートの底面図である。
【図3】 図1の線3−3に沿う横断面図である。
【図4】 図1の線4−4に沿う横断面図である。
【図5】 図1の線5−5に沿う横断面図である。
【図6】 図1の孔17の輪郭を示す断面部分図であ
る。
【図7】 本発明のボーンスクリューの正面図である。
【図8】 本発明のボーンスクリューにより骨に固定さ
れた本発明のボーンプレートの断面図である。
【図9】 本発明のボーンスクリューで脊柱へ固定され
た本発明のボーンプレートを示す略図である。
【図10】 本発明のボーンプレートと共に使用するド
リルガイドの側面図である。
【符号の説明】
1:ボーンプレートの本体、2:縁、3:後縁、4:前
縁、5:切り込み、6:上面、7:前面、8:後面、
9:中央尾根、10:下面、11及び11’:ねじを切
ったねじ孔(中央孔)、12〜15:ねじを切ったねじ
孔、16〜17及び16’〜17’:仮のスクリューの
ための孔、18:カム面、19:ボーンスクリューの
軸、20:頭部、21:先端、22:下方部分、23:
1−スタート・バットレスねじ山、24:上方部分、2
5:2−スタート・マシーンスクリューねじ山、26:
骨の表層、27:網状組織の骨、28:円錐状の先端、
29:セルフタッピング縦溝、30:頭部の底面、3
1:六角形ソケット、32:上部(ギザギザ)、33:
内部ソケット、34:下部、35:先端、36:くり抜
き孔、37:移植片、38:ボーンプレート。

Claims (21)

    【特許請求の範囲】
  1. 【請求項1】 上面と、骨に当たる下面とを有するボー
    ンプレートであって、下面は円筒状の骨に一致するよう
    に湾曲しており、上面は2つの突き合わせ面を有するこ
    とを特徴とするボーンプレート。
  2. 【請求項2】 前記突き合わせ面の一方に垂直な軸を有
    する第1のねじ孔と、前記突き合わせ面の他方に垂直な
    軸を有する第2のねじ孔とを更に備える請求項1に記載
    のボーンプレート。
  3. 【請求項3】 ねじを切っていない、そしてカム面を設
    けた第3のねじ孔を更に備える請求項2に記載のボーン
    プレート。
  4. 【請求項4】 縦に彎曲しており、生理的に受け入れ得
    る金属の縦長の本体から成る、脊柱の前柱を安定化する
    ボーンプレートにおいて、該縦長の本体の前縁は切り込
    みと、その切り込みの端にねじ孔とを有し、そして該縦
    長の本体の後縁は凹形となっており、それの端にねじ孔
    を有することを特徴とするボーンプレート。
  5. 【請求項5】 前記ねじ孔にはねじが切られている請求
    項4に記載のボーンプレート。
  6. 【請求項6】 複数のねじを切っていないねじ孔を更に
    備える請求項5に記載のボーンプレート。
  7. 【請求項7】 ボーンスクリューを受ける複数のねじを
    切ったねじ孔を有する、脊柱の前柱を安定化するボーン
    プレートにおいて、仮止めのスクリューを受ける少なく
    とも一つの、ねじを切っていない孔を更に備えることを
    特徴とするボーンプレート。
  8. 【請求項8】 ボーンプレートの上面は複数の突き合わ
    せ面を有し、これらの面の各々は少なくとも一個の前記
    ねじを切ったねじ孔を有する請求項7に記載のボーンプ
    レート。
  9. 【請求項9】 前記ねじを切ったねじ孔の軸は、それら
    のねじ孔を設けた面に垂直となっている請求項8に記載
    のボーンプレート。
  10. 【請求項10】 ボーンプレートは前縁と後縁とを有
    し、該前縁は手術用具を受け入れる切り込みを有する請
    求項7〜9のいずれかに記載のボーンプレート。
  11. 【請求項11】 前記後縁は彎曲している請求項10に
    記載のボーンプレート。
  12. 【請求項12】 骨に当てるよう彎曲している下面と、
    2つの突き合わせ面を有する上面とを備え、該上面の突
    き合わせ面の各々に少なくとも一つのねじ孔をあけ、こ
    れらのねじ孔の軸は斜めになっていることを特徴とした
    ボーンプレート。
  13. 【請求項13】 カム面を有する複数の長いねじ孔を更
    に含む請求項12に記載のボーンプレート。
  14. 【請求項14】 軸、頭部および先端を有するボーンス
    クリューであって、先端に隣接する軸の位置に単一のス
    タート・バットレスねじ山をつけ、頭部に隣接する部分
    に2スタート・マシーンスクリューねじ山をつけ、これ
    らのねじ山は全体として一定のピッチを有し、そしてリ
    ードは両方のねじ山にわたって連続していることを特徴
    としているボーンスクリュー。
  15. 【請求項15】 前記先端が尖っている請求項14に記
    載のボーンスクリュー。
  16. 【請求項16】 前記先端に隣接してセルフ・タッピン
    グ縦溝を有する請求項15に記載のボーンスクリュー。
  17. 【請求項17】 網状組織の骨と係合するバットレスね
    じ山を軸の先端に隣接して有し、表層の骨と係合するマ
    シーンスクリューねじ山を軸の頭部に隣接して有してい
    ることを特徴とする整形外科用スクリュー。
  18. 【請求項18】 前記マシーンスクリューねじ山が2ス
    タートねじ山である請求項17に記載のスクリュー。
  19. 【請求項19】 前記ねじ山のピッチがねじの長さに沿
    って一定である請求項17もしくは18に記載のスクリ
    ュー。
  20. 【請求項20】 ボーンスクリューを受け入れる複数の
    ねじを切ったねじ孔を有するボーンプレートと複数のボ
    ーンスクリューとを備え、該ボーンスクリューの各々は
    単一のスタート・バットレスねじ山の部分と、2スター
    ト・マシーンスクリューねじ山の部分とを有し、リード
    はこれら2つの部分にわたり連続していることを特徴と
    する脊柱手術に使用する整形外科用固定システム。
  21. 【請求項21】 脊柱に当てる下面と、2つの突き合わ
    せ面を有している上面と、ねじ孔に通すボーンスクリュ
    ーとを有するボーンプレートを備えた、脊柱手術に使用
    する整形外科用固定システムにおいて、該ボーンスクリ
    ューの各々は網状組織の骨と係合するバットレスねじ山
    と、表層の骨と前記ねじ孔とに係合するマシーンスクリ
    ューねじ山とを有していることを特徴とする脊柱手術に
    使用する整形外科用固定システム。
JP7278218A 1994-10-03 1995-10-03 ボーンプレートとボーンスクリュー Pending JPH08206143A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/317,246 1994-10-03
US08/317,246 US5601553A (en) 1994-10-03 1994-10-03 Locking plate and bone screw

Publications (1)

Publication Number Publication Date
JPH08206143A true JPH08206143A (ja) 1996-08-13

Family

ID=23232785

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7278218A Pending JPH08206143A (ja) 1994-10-03 1995-10-03 ボーンプレートとボーンスクリュー

Country Status (6)

Country Link
US (1) US5601553A (ja)
EP (1) EP0705572B1 (ja)
JP (1) JPH08206143A (ja)
CA (1) CA2146679C (ja)
DE (1) DE69525124T2 (ja)
ES (1) ES2170778T3 (ja)

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CA2146679C (en) 2002-12-03
CA2146679A1 (en) 1996-04-04
EP0705572B1 (en) 2002-01-23
ES2170778T3 (es) 2002-08-16
DE69525124D1 (de) 2002-03-14
DE69525124T2 (de) 2002-08-22
US5601553A (en) 1997-02-11
EP0705572A2 (en) 1996-04-10

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