JPH04502567A - 骨ねじ - Google Patents
骨ねじInfo
- Publication number
- JPH04502567A JPH04502567A JP2514423A JP51442390A JPH04502567A JP H04502567 A JPH04502567 A JP H04502567A JP 2514423 A JP2514423 A JP 2514423A JP 51442390 A JP51442390 A JP 51442390A JP H04502567 A JPH04502567 A JP H04502567A
- Authority
- JP
- Japan
- Prior art keywords
- bone screw
- threaded portion
- head
- threaded
- screw
- 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
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
-
- 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
- A61B17/686—Plugs, i.e. elements forming interface between bone hole and implant or fastener, e.g. screw
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8685—Pins or screws or threaded wires; nuts therefor comprising multiple separate parts
-
- 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
- A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
- A61B17/7037—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other wherein pivoting is blocked when the rod is clamped
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Neurology (AREA)
- Surgical Instruments (AREA)
- Materials For Medical Uses (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】
骨ねじ
この発明は特に柄ねじ(pedicel screw)として使用されるねじの
ような、ねじ切りされた部分およびヘッドを含む骨ねじ(bone screw
)に関するものである。
この型のねじは、たとえばDE−361410ICから知られる。
ねじが据付けられる骨組織が軟らかすぎて、ねじを十分に固定するのが困難な場
合がときどきある。
この発明の目的は、ねじ切りされた部分およびヘッドを含み、従来のねじと比較
して、骨への据付けを改良する、骨ねじを与えることである。据付けは、正確に
調節可能であるべきである。
この目的は、請求項1に概説されるような、骨ねじによって達成される。
付加的特徴は、従属項に示される。
この発明のそれ以上の特徴および長所は、示される図面の説明から明らかであろ
う。
図1は、部分的に断面図として示される、骨ねじの分解組立図である。
図2は、接続部とともに組立てられたねじである。
骨ねじ1は、ヘッド3と1つに形成されるねじ切りされた部分2を含む。ねじ切
りされた部分には、一般に骨ねじとともに使用される、外部ねじ山4が設けられ
る。図1から見られるように、同軸方向に整列された長手方向の穴が、前記ねじ
の内部に延びる。ヘッドの反対側の自由端6では、テーパの付いた円錐部7が設
けられる。スリット8は、前記ねじ切りされた部分の長手方向と平行に延びる。
前記スリットの軸方向の長さは、少なくとも前記円錐部の長さの2倍に等しい。
好ましくは、1組のスリットが設けられ、スリットは互いに180°変位される
。
自由端の反対側では、ヘッド3は対称軸に対して直角に配置される平面が設けら
れる。溝10は、軸方向に延び、ねじがねじ回しによって骨へ螺合されることが
できるように形成される。前記溝の直径は、前記長手方向の穴の直径よりも大き
い。ねじ切りされた部分は、溝10に隣接して配置される。好ましくは、この部
分の長さは、テーパの付いた部分7の長さの少なくとも2倍である。
図1から見られるように、骨ねじの先は、別の先端12として形成される。同軸
に整列された穴13は、前記ヘッド方向に向いている端に与えられる。反対の端
は、骨ねじの先端に対応する点14を有する。前記点の反対側では、前記先端の
外部は、円錐部7方向にテーパを有する円錐部15を有し、前記部分7に合うよ
うに形成される。
軸16は、第1のねじ切りされた部分17を有するように与えられる。このねじ
山の直径およびピッチは、この部分11の内部ねじ山に対応し、それにより両方
のねじ山が接続されてもよい。軸16の残りの直径は、長手方向の穴に挿入され
てもよいように寸法法めされる。第1のねじ切りされた部分17の反対側には、
第2のねじ切りされた部分18は、内部部分18と協働するように設けられ、穴
13のねじ山のピッチは、第1のねじ切りされた部分17のピッチおよび対応す
る部分11の内部ねじ山のピッチと正反対である。
軸16の長さは、第2のねじ切りされた部分18がテーパの付いた部分7へ延び
、かつ先端12がこの部分に螺合されることができるように、選択される。その
結果、図2に示されるように、第1のねじ切りされた部分17が、ねじ切りされ
た部分11の端部に螺合されるか、または少なくとも端部に接近するように螺合
されるとき、点12は骨ねじの正規な点を形成する。スリット19は、ねじ回し
が挿入されてもよい前記ねじ切りされた部分の端に与えられる。
動作において、まず、軸16は、長手方向の穴5に、ねじ切りされた部分11の
端まで螺合される。次に、先端12は、第2のねじ切りされた部分18に螺合さ
れ、テーパの付いた部分7に突出し、図2に示されるようにねじの正規な点を形
成する。必要なら、骨ねじのヘッドには、DE37 11 013Cに説明され
るような前記ねじのヘッドに関して移動可能な接続部20が設けられてもよい。
接続部は、骨の断片、特に背骨の構成部分を固定するために、ねじをロッドに接
続するのに役立つ。
骨ねじが骨に螺合されているとき、軸16は、ねじ回しをスリット19に挿入す
ることによって、ヘッド3の方向にねじ戻され得る。ねじ切りされた部分17お
よび18の相反するピッチにより、第2のねじ切りされた部分18および拡張部
の接続が維持され、拡張部はスリットを与えられた部分に引込まれ、したがって
、ねじ切りされた部分2の拡張を達成する。力が拡張部からねじ切りされた軸へ
移される部分は変形されないので、極めて正確な調整が可能である。
さらにこの実施例で、部分11は、長手方向の穴5の直径、すなわち対応する大
きさを有する第1のねじ切りされた部分17の直径よりも大きい直径を与えられ
てもよい。
さらなる例に従って、部分11は、長手方向の穴5の隣接部よりも小さい直径を
有する。第1のねじ切りされた部分は、部分11の内部ねじ山に対応する。軸1
6および拡張部12は1つに形成され、自由端6からねじ切りされた部分2に挿
入される。この場合、第1のねじ切りされた部分17は、軸が、一点14が図2
に示されるように位置決めされる位置から−ヘッドまで移動されてもよく、拡張
部をスリット部に引込むことによって拡張が達成される。
イ9
国際調査報告
SA 41095
Claims (5)
- 1.ねじ切りされた部分(2)およびヘッド(3)を含む骨ねじ(1)であって 、長手方向の穴(5)が前記ねじ切りされた部分の長手方向の軸(15)に沿っ て延び、前記ヘッド(3)の反対側の前記穴(5)の一端にはテーパのついた部 分(7)が設けられ、前記部分(7)には前記ねじ切りされた部分(2)の長手 方向に平行に延びるスリット(8)が設けられ、前記穴には、内部ねじ山が設け られ、前記骨ねじ(1)の先端を形成する拡張部、および前記長手方向の穴(5 )に延び、前記内部ねじ山と協働するねじ切りされた部分(17)を有する軸( 16)を備えることを特徴とする、骨ねじ。
- 2.前記テーパの付いた部分(7)は円錐形で、拡張部(12)は、ヘッド(1 5)の方向にテーパの付いた円錐形(15)の、対応する形状のヘッドを有する 、請求項1に記載の骨ねじ。
- 3.前記先端(12)には、同軸にテーパの付いた穴(13)が軸(16)方向 に向いている端に設けられ、先端に接続される軸(16)の端は、第2のねじ切 りされた部分に与えられ、前記第1のおよび前記第2のねじ切りされた部分のピ ッチ(17、18)は相反する方向を有する、請求項1または2に記載の骨ねじ 。
- 4.前記長手方向の穴(5)の内部でねじ切りされた部分(11)の直径は、自 由端に延びる長手方向の穴(5)の隣接部の直径よりも大きい、請求項1ないし 3に記載の骨ねじ。
- 5.ヘッド(3)には、前記ねじに関して移動可能である接続部(20)が設け られる、請求項1ないし4に記載の骨ねじ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3936703.7 | 1989-11-03 | ||
DE3936703A DE3936703A1 (de) | 1989-11-03 | 1989-11-03 | Knochenschraube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04502567A true JPH04502567A (ja) | 1992-05-14 |
Family
ID=6392840
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2514423A Pending JPH04502567A (ja) | 1989-11-03 | 1990-11-02 | 骨ねじ |
Country Status (9)
Country | Link |
---|---|
US (1) | US5209753A (ja) |
EP (1) | EP0452442B1 (ja) |
JP (1) | JPH04502567A (ja) |
KR (1) | KR920700588A (ja) |
AT (1) | ATE134493T1 (ja) |
CA (1) | CA2045503A1 (ja) |
DE (2) | DE3936703A1 (ja) |
ES (1) | ES2086417T3 (ja) |
WO (1) | WO1991006252A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011502584A (ja) * | 2007-11-02 | 2011-01-27 | スタウト メディカル グループ,エル.ピー. | 拡張可能な取り付けデバイスおよび方法 |
JP2014128657A (ja) * | 2012-12-27 | 2014-07-10 | Biedermann Technologies Gmbh & Co Kg | 動的骨アンカー |
US10888363B2 (en) | 2017-12-06 | 2021-01-12 | Stout Medical Group, L.P. | Attachment device and method for use |
US11160591B2 (en) | 2016-02-25 | 2021-11-02 | Biedermann Technologies Gmbh & Co. Kg | Bone anchor |
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-
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- 1990-11-02 JP JP2514423A patent/JPH04502567A/ja active Pending
- 1990-11-02 DE DE59010168T patent/DE59010168D1/de not_active Expired - Lifetime
- 1990-11-02 CA CA002045503A patent/CA2045503A1/en not_active Abandoned
- 1990-11-02 ES ES90915441T patent/ES2086417T3/es not_active Expired - Lifetime
- 1990-11-02 US US07/679,085 patent/US5209753A/en not_active Expired - Lifetime
- 1990-11-02 KR KR1019910700660A patent/KR920700588A/ko not_active Application Discontinuation
- 1990-11-02 AT AT90915441T patent/ATE134493T1/de not_active IP Right Cessation
- 1990-11-02 EP EP90915441A patent/EP0452442B1/de not_active Expired - Lifetime
- 1990-11-02 WO PCT/EP1990/001835 patent/WO1991006252A1/de active IP Right Grant
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2011502584A (ja) * | 2007-11-02 | 2011-01-27 | スタウト メディカル グループ,エル.ピー. | 拡張可能な取り付けデバイスおよび方法 |
US8636784B2 (en) | 2007-11-02 | 2014-01-28 | Stout Medical Group, LP | Expandable attachment device and method |
JP2014128657A (ja) * | 2012-12-27 | 2014-07-10 | Biedermann Technologies Gmbh & Co Kg | 動的骨アンカー |
US11160591B2 (en) | 2016-02-25 | 2021-11-02 | Biedermann Technologies Gmbh & Co. Kg | Bone anchor |
US10888363B2 (en) | 2017-12-06 | 2021-01-12 | Stout Medical Group, L.P. | Attachment device and method for use |
US11737800B2 (en) | 2017-12-06 | 2023-08-29 | Stout Medical Group, L.P. | Attachment device and method for use |
Also Published As
Publication number | Publication date |
---|---|
CA2045503A1 (en) | 1991-05-04 |
ATE134493T1 (de) | 1996-03-15 |
US5209753A (en) | 1993-05-11 |
DE3936703C2 (ja) | 1992-09-10 |
WO1991006252A1 (de) | 1991-05-16 |
EP0452442B1 (de) | 1996-02-28 |
DE59010168D1 (de) | 1996-04-04 |
ES2086417T3 (es) | 1996-07-01 |
DE3936703A1 (de) | 1991-05-08 |
EP0452442A1 (de) | 1991-10-23 |
KR920700588A (ko) | 1992-08-10 |
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