JP2014198248A - ロッドを受けてそのロッドを骨固定要素に連結するための受け部、およびそのような受け部を有する骨固定装置 - Google Patents
ロッドを受けてそのロッドを骨固定要素に連結するための受け部、およびそのような受け部を有する骨固定装置 Download PDFInfo
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- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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Abstract
【解決手段】ロッド6を受ける溝13を有する受け部本体5と、骨固定要素1の頭部3を導入する開口18を有し、該頭部3を収容するための収容空間19と、頭部3を締め付けるための可撓性部83′を有する、収容空間19の少なくとも一部に配置された圧力要素8,8′とを備える。圧力要素8′は、前記受け部本体5内において、頭部3の導入を可能にする挿入位置、頭部3が受け部内において固定される固定位置、および、頭部3が圧力要素によって作用する予応力により締め付けられる予備固定位置をとることができる。
【選択図】図23
Description
複数の固定装置を接続するロッドを受けるような大きさを有する。第2端11近傍の第2領域には、穴12の円柱状部に続いて、円錐角をなして第2端11に向かって先細になる第1テーパ状部分16が設けられている。第1テーパ状部分16に続いて、円錐角をなして第2端11に向かって先細になる第2テーパ部分17が設けられ、その円錐角は、第1テーパ部の円錐角よりも小さい。第2端には開口18が設けられている。開口18の直径は頭部3の直径よりも大きく、穴12の内径よりも小さい。同軸の穴12は、ねじの頭部3のための収容空間を提供する。
に示すように、圧力要素8は、ねじの頭部3を挿入可能にする挿入状態である、最も上の位置にある。挿入状態においては、圧力要素の可撓性のある第2の部分が、収容空間19内において自由に位置する。挿入状態は、上昇運動に対して、この実施形態ではピンを凹部84の下端と係合して設けられた当接部(abutment)によって制限される。図9に示すように、次に、ねじの頭部3が開口18を通して収容空間19に収納され、その位置に、圧力要素8の第2の部分82が配置される。ねじの頭部3は開口86を通して、圧力要素の第2の部分82の中空の内部85に導入される。スリット89により可撓性が付与される壁によって、第2の部分は図9に示すように収容空間19内で拡張される。第2の部分は、ねじの頭部3を包囲するまでねじの頭部にスナップ嵌合する。ピンはまた、ねじの頭部が挿入されるときに、圧力要素8が開口する第2端11を貫いて離脱することを防止する。挿入状態においては、ねじの頭部3は受け部において旋回可能であり、また、圧力要素がこの位置にとどまれば、ねじの頭部は取外し可能である。圧力要素を一時的に挿入状態に保持するための手段(図示せず)が設けられてもよい。それに代えて、圧力要素を工具(図示せず)により挿入状態に保持することも可能である。
明する。まず図20に示すように、圧力要素8′が第1端10から受け部本体5に挿入される。その後、ピン9a′,9b′が脚部の穴に挿入される。圧力要素8′は、弾力のある指状部の外側へ伸びる部分92がピンの平坦にされた部分93の上に配置するような位置にある。この位置において、圧力要素8′は挿入状態にある。その後、ねじの頭部が、圧力要素8′の第2の部分82がねじの頭部3を包囲するまで、開口18および86を通して挿入される。その後、図22に示すように、圧力要素8′がわずかに下降して、予備固定状態に入る。それによって、弾力のある指状部91a,91bは、外側に延びる部分92がピンの平坦にされた部分93の周りを動くことにより、内側に押し付けられる。図23に示すように、外側に延びる部分92が外側へ移動し、平坦にされた部分93が圧力要素のための当接部を構成する。この予備固定状態において、第2の部分82のテーパ状の外側表面部分が、受け部本体のテーパ状部分17と係合する。ピンが止め部材として作用するため、予備固定状態が確実になる。
示された実施形態をさらに変更することが可能である。たとえば、骨固定要素の頭部は、円柱形のような他の形状を有してもよい。頭部をたとえば円柱形にすることにより、単一の軸まわりに受け部に対してねじ要素を旋回可能にする単軸骨ねじが供給される。頭部3を、円錐形状にし、圧力要素の中空の内側部85をこの形状に適合させることも可能である。さらなる変形例においては、受け部本体5または少なくとも圧力要素の第2の部分82は、ある程度弾性を有する生体適合性のある樹脂材料で形成される。この場合、スリットは設けなくてもよい。
第2テーパ状部分,18 開口、19 収容空間、20a,20b 穴、81,81′
第1の部分、82 第2の部分、83 U字状凹部、83′ 窪み、86 開口、87
第1の部分、88 第2の部分、89 スリット、90 同軸穴、91a,91b 指状部、170a,170b 湾曲部分、170c 溝、180c 稜、180d 外側稜、M 対称軸。
Claims (15)
- ロッドを骨固定要素に結合するためにロッドを受ける受け部であって、
前記ロッドを受ける溝(13)を有する受け部本体(5)と、
骨固定要素(1)の頭部(3)を導入する開口(18)を有し、該頭部(3)を収容するための収容空間(19)と、
前記頭部を締め付けるための可撓性部(83,83′)を有する、前記収容空間(19)の少なくとも一部に配置された圧力要素(8,8′)とを備え、
前記圧力要素(8,8′)は、前記受け部本体(5)内において、前記頭部の導入を可能にする挿入状態、前記頭部が前記受け部内において固定される固定状態、および、前記頭部が前記圧力要素によって作用する予応力により締め付けられる予備固定状態をとることができる、受け部。 - 前記挿入状態において、前記圧力要素(8,8′)前記収容空間(19)内において拡張し得る、請求項1に記載の受け部。
- 前記挿入状態は、前記圧力要素(8,8′)に作動する止め部材(9a,9b,84)によって制限される、請求項1または2に記載の受け部。
- 前記予備固定状態において、前記頭部に作用する予応力が、前記受け部本体の内壁の一部のみにより、前記圧力要素外壁の一部(88)を締め付けることによって発生する、請求項1から3のいずれか1項に記載の受け部。
- 前記圧力要素(8′)が弾性力によって前記予備固定状態に保持される、請求項1〜4のいずれか1項に記載の受け部。
- 前記弾性力が、前記受け部本体(5)に設けられた係止部と協働する、前記圧力要素の弾力のある部分(91a,91b,92)、または、前記圧力要素に設けられた係止部と協働する、前記受け部本体(5)の弾力のある部分によって生じる、請求項5に記載の受け部。
- 前記挿入状態において、前記頭部が受け部本体から取り外し可能である、請求項1〜6のいずれかに1項に記載の受け部。
- 収容空間(19)が、前記開口部近傍に狭くする部分(17)を有する略円柱状であり、該狭くする部分(17)は好ましくはテーパ状を有するかまたは丸くなっている、請求項1〜7のいずれか1項に記載の受け部。
- 前記圧力要素が、その外壁に狭くする部分(88)を備え、この狭くする部分(88)は、好ましくはテーパ状を有するか丸くなっており、かつ、前記収容空間(19)において、該収容空間の前記狭くする部分(17)と協働する、請求項8に記載の受け部。
- 前記圧力要素の前記可撓性部(82)前記頭部(3)および該頭部を挿入するための開口(86)を収容するための中空の部分(85)を有する、請求項1〜9のいずれか1項に記載の受け部。
- 前記可撓性部(82)の外径が、前記収容空間(19)の内径よりも小さい、請求項1〜10のいずれか1項に記載の受け部。
- 前記受け部本体(5)が、ロッド(6)を受けるためのU字形状の凹部(13)を有す
る部分を備える、請求項1〜11のいずれか1項に記載の受け部。 - 前記圧力要素(8,8′)がロッドを受けるための凹部(83,83′)を備える、請求項1〜12のいずれか1項に記載の受け部。
- 前記圧力要素が前記受け部本体内に、離脱しないように固定されている、請求項1〜13のいずれか1項に記載の受け部。
- 請求項1〜14のいずれか1項に記載の受け部と、シャフトおよび頭部を有する骨固定要素と、好ましくはさらに、ロッドを受け部内に固定するための閉塞部材とを備える、骨固定装置。
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US15430609P | 2009-02-20 | 2009-02-20 | |
EP09002468.8A EP2221013B1 (en) | 2009-02-20 | 2009-02-20 | Receiving part for receiving a rod for coupling the rod to a bone anchoring element and a bone anchoring device with such a receiving part |
US61/154,306 | 2009-02-20 | ||
EP09002468.8 | 2009-02-20 |
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JP2010030782A Division JP5622402B2 (ja) | 2009-02-20 | 2010-02-16 | ロッドを受けてそのロッドを骨固定要素に連結するための受け部、およびそのような受け部を有する骨固定装置 |
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JP2014098461A Active JP5865428B2 (ja) | 2009-02-20 | 2014-05-12 | ロッドを受けてそのロッドを骨固定要素に連結するための受け部、およびそのような受け部を有する骨固定装置 |
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KR (1) | KR101673524B1 (ja) |
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JP7555286B2 (ja) | 2020-02-25 | 2024-09-24 | ビーダーマン・テクノロジーズ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング・ウント・コンパニー・コマンディートゲゼルシャフト | 骨固定装置 |
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US7833250B2 (en) | 2004-11-10 | 2010-11-16 | Jackson Roger P | Polyaxial bone screw with helically wound capture connection |
US8876868B2 (en) | 2002-09-06 | 2014-11-04 | Roger P. Jackson | Helical guide and advancement flange with radially loaded lip |
US7377923B2 (en) | 2003-05-22 | 2008-05-27 | Alphatec Spine, Inc. | Variable angle spinal screw assembly |
US8936623B2 (en) | 2003-06-18 | 2015-01-20 | Roger P. Jackson | Polyaxial bone screw assembly |
US7766915B2 (en) | 2004-02-27 | 2010-08-03 | Jackson Roger P | Dynamic fixation assemblies with inner core and outer coil-like member |
US7776067B2 (en) | 2005-05-27 | 2010-08-17 | Jackson Roger P | Polyaxial bone screw with shank articulation pressure insert and method |
US8475495B2 (en) | 2004-04-08 | 2013-07-02 | Globus Medical | Polyaxial screw |
US7503924B2 (en) | 2004-04-08 | 2009-03-17 | Globus Medical, Inc. | Polyaxial screw |
US8926672B2 (en) | 2004-11-10 | 2015-01-06 | Roger P. Jackson | Splay control closure for open bone anchor |
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2010
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- 2010-02-16 KR KR1020100013817A patent/KR101673524B1/ko active IP Right Grant
- 2010-02-19 EP EP13151162.8A patent/EP2581057B1/en active Active
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WO2007038350A2 (en) * | 2005-09-23 | 2007-04-05 | Synthes (Usa) | Bone support apparatus |
WO2009015100A2 (en) * | 2007-07-20 | 2009-01-29 | Synthes (U.S.A.) | Polyaxial bone fixation element |
Cited By (1)
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JP7555286B2 (ja) | 2020-02-25 | 2024-09-24 | ビーダーマン・テクノロジーズ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング・ウント・コンパニー・コマンディートゲゼルシャフト | 骨固定装置 |
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EP2221013A1 (en) | 2010-08-25 |
JP2010194309A (ja) | 2010-09-09 |
US20160045228A1 (en) | 2016-02-18 |
US10182848B2 (en) | 2019-01-22 |
KR20100095373A (ko) | 2010-08-30 |
TWI527559B (zh) | 2016-04-01 |
EP2221013B1 (en) | 2015-08-05 |
EP2581057B1 (en) | 2017-08-30 |
CN101810510A (zh) | 2010-08-25 |
TW201031380A (en) | 2010-09-01 |
EP2221012A1 (en) | 2010-08-25 |
US20190167311A1 (en) | 2019-06-06 |
US10898235B2 (en) | 2021-01-26 |
JP5622402B2 (ja) | 2014-11-12 |
CN101810510B (zh) | 2014-02-12 |
US11793552B2 (en) | 2023-10-24 |
EP2581057A1 (en) | 2013-04-17 |
US20160256199A1 (en) | 2016-09-08 |
ES2455122T3 (es) | 2014-04-14 |
US20100234902A1 (en) | 2010-09-16 |
ES2548580T3 (es) | 2015-10-19 |
EP2221012B1 (en) | 2014-01-01 |
JP5865428B2 (ja) | 2016-02-17 |
US8926671B2 (en) | 2015-01-06 |
US20240032971A1 (en) | 2024-02-01 |
KR101673524B1 (ko) | 2016-11-07 |
US20210106361A1 (en) | 2021-04-15 |
US10076363B2 (en) | 2018-09-18 |
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