JP2007014785A - 骨固定素子およびその製造方法 - Google Patents
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- A—HUMAN NECESSITIES
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- 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
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
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- 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
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- 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
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- 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
- A61B17/864—Pins or screws or threaded wires; nuts therefor hollow, e.g. with socket or cannulated
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- 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
- A61B17/866—Material or manufacture
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- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
- A61B2017/00867—Material properties shape memory effect
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- 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
- A61B2017/8655—Pins or screws or threaded wires; nuts therefor with special features for locking in the bone
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Abstract
【解決手段】骨固定素子1は、一方の端に先端3を、他端に頭部4を備えた骨に固定するためのシャフト2を有し、前記シャフト2は、シャフト軸回りの少なくとも1つの螺旋状ラインに沿って配置される複数のアゴ状素子12を含み、前記アゴ状素子は、前記シャフトの一部であるチューブ体10に一体的に形成される。アゴ状素子は、チューブ体10の壁から切開されており、それぞれ自由刃先14を有し、刃先は環状の円周上ラインに対して角度が付いている。
【選択図】図1
Description
ューブ体部分のシャフト軸回りの、少なくとも1つの螺旋状ラインに配置される。アゴ状素子はねじ山のような機能を提供し、これは、ねじ込み動作によって骨固定素子を骨により深く位置付けるか、またはそれを元にねじるかのいずれかにより、コアホールに骨固定素子を挿入した後、コアホールにおける骨固定素子の位置を補正することを可能とする。アゴ状素子は、骨固定素子が引き抜かれるまたは緩くなるのを防止する。必要であれば、本発明の骨固定素子は、それが挿入された方向と反対方向または反時計回りに回転させることにより、ネジのように取り外すことが可能である。
シャフトのチューブ体が形状記憶合金で作られる場合、体温の作用のために、骨固定素子の骨への挿入時にアゴ状素子は突出せず、骨固定素子が挿入される際に立ち上がったりしないように、形状記憶効果を使用することができる。チューブ体はまた、超弾性特性またはばね状動作を有する材料で作られることも可能である。例えば、超弾性を有するチタン合金またはステンレス鋼が使用可能である。
れるように使用材料およびアゴ状素子12の実寸に基づいて製造工程時に選択される角度gで、チューブ体10の表面から突出している。その構成およびチューブ体10の壁への装着のため、アゴ状素子12はチューブ体10に対して弾性的に変形可能である。アゴ状素子12は倒される、または切り込み内に押圧される際に、予め張力がかかる。
詳細には、椎骨における固定に適している。アゴ状素子間により大きな距離を有する第2のセクション103は、先端3に隣接して設けられ、椎体と係合する。第1のセクション101は頭部に隣接しており、椎弓根と係合する。従って、椎体におけるアゴ状素子間のより大きい距離のために、椎弓根領域においてアゴのより高い係止力を与えつつ、椎体のいかなる可能性のある損傷をも最小限にすることができる。
図9は本開示の第4の実施形態の分解図である。図9による骨固定素子300は、先端303と、チューブ体310と、一端に頭部4を備えたシャフト302とを含む。第4の実施形態は、第1の実施形態のアゴ状素子12の代わりにアゴ状素子312が設けられている点で、上述の第1の実施形態と異なる。さらに、第4の実施形態は、先端303、シャフト302、およびチューブ体310を接続するための構造の点で、第1の実施形態と異なる。
第2の接続構造321は、先端303の突出部315のシャフト302に向けられた側に設けられた同心の内側ボアに設けられた対応する接続構造(図示せず)と協働し、先端303とシャフト302との固定を確立するよう機能する。さらに、シャフト302の頭部4の側の外周上に、第3の接続構造322が設けられている。この第3の接続構造322は、頭部4の側でのシャフト302とチューブ体310との固定を確立するために、チューブ体310の頭部4に向けられた側の内側ボアと協働する。
Claims (13)
- 骨に固定するためのシャフトを有する骨固定素子であって、前記シャフト(2;200)は複数のアゴ状素子(12)を含み、
前記アゴ状素子は前記シャフトの一部であるチューブ体(10;100;200)に一体的に形成される、骨固定素子。 - 前記アゴ状素子(12)は前記チューブ体(10;100;200)の壁から切開される、請求項1に記載の骨固定素子。
- アゴ状素子(12)はそれぞれ自由刃先(14)を有し、刃先は環状の円周上ラインに対して角度(a)を含む、請求項1または請求項2に記載の骨固定素子。
- アゴ状素子(12)はチューブ体(10;100;200)の壁に対して弾性的に変形可能である、請求項1乃至請求項3の1つに記載の骨固定素子。
- 前記チューブ体(200)は前記シャフトの中空部分を形成する、請求項1乃至請求項4の1つに記載の骨固定素子。
- 前記チューブ体(10;100)は基本的に円筒状シャフト基盤(8)上に設置される、請求項1乃至請求項4の1つに記載の骨固定素子。
- 前記チューブ体(10;100;201:202)が回転するのを阻止するための手段(9;11)が設けられる、請求項6に記載の骨固定素子。
- 好適には圧入またはネジ接続により、前記チューブ体(10;100;200)に固定的に接続可能な先端(3)が設けられる、請求項1乃至請求項7の1つに記載の骨固定素子。
- 前記チューブ体に接続可能な頭部(4)が設けられる、請求項1乃至請求項8の1つに記載の骨固定素子。
- 前記チューブ体(10;100;200)は形状記憶合金、好適にはニチノールから形成される、請求項1乃至請求項9の1つに記載の骨固定素子。
- アゴ状素子(12)は、シャフト軸回りの少なくとも1つの螺旋状ライン(S)に沿って配置される、請求項1乃至請求項10の1つに記載の骨固定素子。
- 請求項1〜請求項11のいずれかに記載の骨固定素子を製造するための方法であって、
チューブ体(10;100;200)を設けて、
前記チューブ体の壁にアゴ状素子の形状を形成する切り込みにより、複数のアゴ状素子(12)を生成する工程を含む、骨固定素子の製造方法。 - アゴ状素子はレーザー切断により生成される、請求項12に記載の骨固定素子の製造方法。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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US69766905P | 2005-07-08 | 2005-07-08 | |
EP20050014839 EP1743587B1 (en) | 2005-07-08 | 2005-07-08 | Bone anchoring element |
EP05014839.4 | 2005-07-08 | ||
US60/697,669 | 2005-07-08 |
Publications (2)
Publication Number | Publication Date |
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JP2007014785A true JP2007014785A (ja) | 2007-01-25 |
JP5181199B2 JP5181199B2 (ja) | 2013-04-10 |
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JP2006188069A Expired - Fee Related JP5181199B2 (ja) | 2005-07-08 | 2006-07-07 | 骨固定素子およびその製造方法 |
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US (3) | US8292932B2 (ja) |
JP (1) | JP5181199B2 (ja) |
KR (1) | KR101145415B1 (ja) |
Cited By (3)
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JP2014000402A (ja) * | 2012-06-18 | 2014-01-09 | Biedermann Technologies Gmbh & Co Kg | 骨固定具 |
JP2014113487A (ja) * | 2012-12-05 | 2014-06-26 | Biedermann Technologies Gmbh & Co Kg | 動的骨アンカーおよび動的骨アンカーを製造する方法 |
JP2014128657A (ja) * | 2012-12-27 | 2014-07-10 | Biedermann Technologies Gmbh & Co Kg | 動的骨アンカー |
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Also Published As
Publication number | Publication date |
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KR20070006596A (ko) | 2007-01-11 |
US8292932B2 (en) | 2012-10-23 |
US20150088209A1 (en) | 2015-03-26 |
US20070038219A1 (en) | 2007-02-15 |
KR101145415B1 (ko) | 2012-05-15 |
JP5181199B2 (ja) | 2013-04-10 |
US20130072993A1 (en) | 2013-03-21 |
US8845702B2 (en) | 2014-09-30 |
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