JP3172538B2 - 頸椎を安定させるための部材 - Google Patents
頸椎を安定させるための部材Info
- Publication number
- JP3172538B2 JP3172538B2 JP52722696A JP52722696A JP3172538B2 JP 3172538 B2 JP3172538 B2 JP 3172538B2 JP 52722696 A JP52722696 A JP 52722696A JP 52722696 A JP52722696 A JP 52722696A JP 3172538 B2 JP3172538 B2 JP 3172538B2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- stabilizing
- bore
- nut
- cervical spine
- 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.)
- Expired - Fee Related
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
- A61B17/7044—Screws or hooks combined with longitudinal elements which do not contact vertebrae also having plates, staples or washers bearing on the vertebrae
-
- 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
- A61B17/7041—Screws or hooks combined with longitudinal elements which do not contact vertebrae with single longitudinal rod offset laterally from single row of screws or hooks
-
- 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
- A61B17/7055—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant connected to sacrum, pelvis or skull
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)
- Neurosurgery (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Inorganic Insulating Materials (AREA)
- Gripping On Spindles (AREA)
- Gyroscopes (AREA)
Description
の安定部材を開示している。この部材はプレートを含
み、このプレートは頸椎柱の所望の形に適合するよう曲
げられる。その後、隣接する個々の脊椎骨に複数のボル
トがねじ込まれる。この曲線が完璧ではなく、または医
学的理由で変えられなければならないと外科医が判断す
れば、プレートを再び曲げるためにすべてのねじを再び
取外さなければならない。その後再びボルトをねじ込ま
なければならない。脊椎骨の安定性の理由により、この
ように再びねじ込む作業は骨で固定度が低いため、まず
可能ではなく、そのため、実際にはそのように後に整列
を正しくすることなく行なわれなければならない。米国
特許第5,312,404号は脊椎骨を安定させるための部材を
開示し、この部材はプレート形の部分と、プレートの面
に対して垂直に延びるボアとを備えるボディを含む。ね
じ山付き部分とヘッドとを有する骨用ねじが設けられ、
それによりねじ山付き部分はボアを通ってプレートの面
の第1の面の方に延び、骨用ねじのヘッドはプレート形
部分に支えられる。この部材は、プレート形部分に隣接
するプレートの面にあるボアに対して横方向にオフセッ
トされる第2の部分を有する。第2の部分はロッドを受
けるためのボアを含む。ねじを受けるためのねじ溝付き
ボアは、このボアの軸に対して垂直に設けられる。ロッ
ドはこのねじ溝付きボアのにねじ込まれるねじによって
固定される。
ボディと、横方向にオフセットされる第2の部分とから
なる、脊椎骨を安定させるための部材を開示している。
第2の部分は、スリットであって、外ねじを備え、かつ
その中に支えられるロッドを受入れるよう役割を果たす
ものを含む。外ねじと協働するナットは、その中に配置
されるロッドを固定する役割を果たす。
って、受入れられるロッドが永久に固定される部材を提
供することである。
させるための部材によって達成される。この発明のさら
なる展開は従属項に特徴付けられる。
例の詳細な説明から明らかとなるだろう。図面におい
て、 図1は図2の線IIに沿った拡大断面図である。
面図である。
部材は、実質的に長方形の形を有するプレート形ボディ
1を含む。ボディは、その半分の領域およそ中央に設け
られかつプレートの面に対して垂直に整列するボア2を
有する。たとえば、上で引用したドイツ特許第39 23
995号から公知であるような、ねじ山付き部分4とヘッ
ド5とを含む骨用ねじがボア2に配置される。ねじ山付
部分4はボアを通って、プレート形ボディ1の第1の面
6の方向に延びる。ボアは、第1の面6の反対側にある
プレート形ボディの第2の面7に、球面形凹みとして形
成されるエッジ部分を有する。ヘッド5は、ねじ山付き
部分4と向かい合うその下側に、対応する凸状の球面形
状を有する、球面形凹みの半径と、球面形ヘッドの対応
する凸状の球面形部分の半径とは実質的に等しく、かつ
互いに整合し、それにより、骨用ねじを都合よく脊椎の
中にねじ込むために、骨用ねじは破線で示される円錐領
域内で軸8の周りを旋回することができる。
る円筒形突出部9を含む。円筒形突出部9は外ねじ10を
含む。その対称軸またはねじ軸はそれぞれボディ1のプ
レート面に対して垂直に延び、かつボア2の軸に対して
それぞれ平行に延びる。
ト11は、円筒形突出部9の対称軸を含む対称面に沿って
延びる。スリット11は対称軸に対して平行な2つの横壁
と、実質的に円筒部分として形成されるスリットベース
とを含む。スリットは固定ロッド12を受ける役割を果た
す。スリットおよびそのベースは、固定ロッド12が横方
向のクリアランスを有することなくスリットの中にその
ベースまで入ることを可能にするようなサイズである。
さらに、ナット13が設けられ、このナットは図3に最も
わかりやすく示されるようにリム15に隣接する内ねじ14
を含む部分を有する。ナットは、リム15とは反対側の端
部にドーム状キャップ16を有する。キャップは、内ねじ
部分と向かい合う側に設けられる、同軸方向に整列する
圧力ピン17を有する。圧力ピン17はその自由端部が1mm
の何分の1か分だけナット13のリム15を超えて突出する
ようなサイズである。ピンの直径はロッド12の直径に等
しいか、またはそれよりもわずかに小さく、それにより
ピンはスリット11の中に自由に入れることができ、その
一方でスリットによって横方向に導かれる。
適合される。内ねじ14の長さは、円筒形突出部9の軸の
長さとスリット11の深さとに依存して、スリットの深さ
からその中に入れられるロッドの直径を引いたものより
も長い。
は、そのねじ山付き部分4の反対側に、スクリュードラ
イバによってねじを入れるための六角形のボア19を有す
る。
ぞれ骨用ねじ3によって隣接する脊椎骨の中にねじ込ま
れるが、この骨用ねじ3はそれらの最終的な位置にはま
だ締められていない。その後隣接するボディのそれぞれ
のスリットの中に固定ロッド12が入れられる。その後キ
ャップナット13がねじ止めされ、それにより、最終的に
ナットを締付ける前でも、固定ロッド12の位置はわずか
に突出する圧力ピン17によって固定される。所望の変形
の場合においては単にナットは再び緩められ、ロッドが
取外され、かつ再び曲げられ、再び挿入され、その後ナ
ットをねじ止めすることにより圧力ピンによって保持さ
れる。最終的な調整の後骨用ねじ3は締められ、ナット
13を締めることによって最終的に固定される。ナット13
と、U形スリットの内壁に当接する圧力ピンとが協働す
ることによって、解放できない固定が得られる。
ースが非常に限られている頸椎柱の領域においてさえ
も、正しく直すことのできる調整および調節された脊椎
骨の固定を可能にする。
Claims (5)
- 【請求項1】頸椎を安定させるための部材であって、プ
レートの面とプレートの面に対して垂直に延びるボア
(2)とを有するプレート形部分を備えるボディ(1)
と、 ねじ山付き部分(4)とヘッド(5)とを有する骨用ね
じ(3)とを含み、 前記ねじ山付き部分(4)は前記ボア(2)を通って前
記プレートの面の第1の面(6)に延び、かつ前記ヘッ
ド(5)は前記プレート形部分によって支えられ、さら
に、 前記プレートの面の前記ボア(2)に対して横方向に片
寄って位置付けられ、かつ雄ねじ(10)と、ロッド(1
2)を受入れてロッドを支えるためにねじ軸の方向に延
びるスリット(11)とを有する第2の部分(9)と、 前記雄ねじ(10)と協働して、その中に挿入されるロッ
ド(12)を固定するためのナット(13)とを含み、 前記ナット(13)はキャップの形で構成され、圧力ピン
(17)が設けられ、前記圧力ピンの一方の端部(18)は
前記ナット(13)が取付けられるときには前記スリット
(11)の中に突出し、他方の端部は前記ナットに当接
し、かつ前記圧力ピンの直径は、前記圧力ピン(17)が
前記スリットの側壁によって横方向に導かれるような大
きさを有する、頸椎を安定させるための部材。 - 【請求項2】前記圧力ピン(17)が前記ナットのリム
(15)を超えて外に向かって突出することを特徴とす
る、請求項1に記載の頸椎を安定させるための部材。 - 【請求項3】前記ボア(2)が前記プレートの面の前記
第1の面(6)と反対側の第2の面(7)上に、球面形
凹みとして形成されるエッジを有し、かつ前記ヘッド
(5)は前記ねじ山付き部分(4)と向かい合うその下
側に、対応する凸状の球面形状を備えて形成されること
を特徴とする、請求項1または2に記載の頸椎を安定さ
せるための部材。 - 【請求項4】前記ナット(13)と前記圧力ピン(17)と
は1つの部品として形成されることを特徴とする、請求
項1〜3のいずれかに記載の頸椎を安定させるための部
材。 - 【請求項5】前記ねじ軸が前記プレートの面に対して垂
直に延びることを特徴とする、請求項1〜4のいずれか
に記載の頸椎を安定させるための部材。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19509331A DE19509331C2 (de) | 1995-03-15 | 1995-03-15 | Element zur Halswirbelstabilisierung |
DE19509331.3 | 1995-03-15 | ||
PCT/EP1996/000883 WO1996028105A1 (de) | 1995-03-15 | 1996-03-01 | Element zur halswirbelstabilisierung |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH10500348A JPH10500348A (ja) | 1998-01-13 |
JP3172538B2 true JP3172538B2 (ja) | 2001-06-04 |
Family
ID=7756713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52722696A Expired - Fee Related JP3172538B2 (ja) | 1995-03-15 | 1996-03-01 | 頸椎を安定させるための部材 |
Country Status (10)
Country | Link |
---|---|
US (1) | US6106526A (ja) |
EP (1) | EP0759726B1 (ja) |
JP (1) | JP3172538B2 (ja) |
KR (1) | KR100303919B1 (ja) |
CN (1) | CN1136818C (ja) |
AT (1) | ATE167039T1 (ja) |
CA (1) | CA2190284A1 (ja) |
DE (2) | DE19509331C2 (ja) |
ES (1) | ES2120285T3 (ja) |
WO (1) | WO1996028105A1 (ja) |
Families Citing this family (136)
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DE19752660A1 (de) * | 1997-11-27 | 1999-06-10 | Harms Juergen | Einrichtung zur Korrektur der Wirbelsäule |
DE19950252C2 (de) * | 1999-10-18 | 2002-01-17 | Schaefer Micomed Gmbh | Knochenplatte |
DE19950270C2 (de) * | 1999-10-18 | 2003-07-17 | Bernd Schaefer | Knochenplatte |
DE10005133B4 (de) * | 2000-02-04 | 2005-11-10 | Copf jun., Franz, Dr. | Vergurtungssystem zur Spondylodese der Lendenwirbelsäule |
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TWI740776B (zh) * | 2020-12-07 | 2021-09-21 | 財團法人工業技術研究院 | 低突出偏置型脊椎融合裝置 |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE3923995A1 (de) * | 1989-07-20 | 1991-01-31 | Lutz Biedermann | Stabilisierungselement fuer knochen |
US5129900B1 (en) * | 1990-07-24 | 1998-12-29 | Acromed Corp | Spinal column retaining method and apparatus |
CH681853A5 (ja) * | 1990-08-21 | 1993-06-15 | Synthes Ag | |
US5360429A (en) * | 1992-02-20 | 1994-11-01 | Jbs Societe Anonyme | Device for straightening, fixing, compressing, and elongating cervical vertebrae |
HU9503288D0 (en) * | 1993-05-18 | 1996-01-29 | Schaefer Micomed Gmbh | Holding device for use in bone surgery |
-
1995
- 1995-03-15 DE DE19509331A patent/DE19509331C2/de not_active Expired - Lifetime
-
1996
- 1996-03-01 US US08/737,156 patent/US6106526A/en not_active Expired - Lifetime
- 1996-03-01 AT AT96906728T patent/ATE167039T1/de active
- 1996-03-01 EP EP96906728A patent/EP0759726B1/de not_active Expired - Lifetime
- 1996-03-01 KR KR1019960706373A patent/KR100303919B1/ko not_active IP Right Cessation
- 1996-03-01 CN CNB96190187XA patent/CN1136818C/zh not_active Expired - Fee Related
- 1996-03-01 CA CA002190284A patent/CA2190284A1/en not_active Abandoned
- 1996-03-01 DE DE59600268T patent/DE59600268D1/de not_active Expired - Lifetime
- 1996-03-01 WO PCT/EP1996/000883 patent/WO1996028105A1/de active IP Right Grant
- 1996-03-01 JP JP52722696A patent/JP3172538B2/ja not_active Expired - Fee Related
- 1996-03-01 ES ES96906728T patent/ES2120285T3/es not_active Expired - Lifetime
Also Published As
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---|---|
CN1136818C (zh) | 2004-02-04 |
CA2190284A1 (en) | 1996-09-19 |
DE59600268D1 (de) | 1998-07-16 |
KR100303919B1 (ko) | 2001-11-22 |
DE19509331C2 (de) | 1998-01-15 |
KR970702700A (ko) | 1997-06-10 |
JPH10500348A (ja) | 1998-01-13 |
US6106526A (en) | 2000-08-22 |
EP0759726B1 (de) | 1998-06-10 |
CN1148329A (zh) | 1997-04-23 |
ES2120285T3 (es) | 1998-10-16 |
WO1996028105A1 (de) | 1996-09-19 |
ATE167039T1 (de) | 1998-06-15 |
DE19509331A1 (de) | 1996-09-26 |
EP0759726A1 (de) | 1997-03-05 |
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