JP6076069B2 - 多軸骨固定装置 - Google Patents
多軸骨固定装置 Download PDFInfo
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- JP6076069B2 JP6076069B2 JP2012276785A JP2012276785A JP6076069B2 JP 6076069 B2 JP6076069 B2 JP 6076069B2 JP 2012276785 A JP2012276785 A JP 2012276785A JP 2012276785 A JP2012276785 A JP 2012276785A JP 6076069 B2 JP6076069 B2 JP 6076069B2
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- head
- anchoring device
- bone anchoring
- polyaxial bone
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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, e.g. 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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, e.g. 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/03—Automatic limiting or abutting means, e.g. for safety
- A61B2090/037—Automatic limiting or abutting means, e.g. for safety with a frangible part, e.g. by reduced diameter
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Neurology (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Description
7 骨固定装置は、製造が簡単であり、頭部と受け部と圧力要素との相互の許容誤差を考慮して厳密に作る必要がない。
Claims (14)
- 多軸骨固定装置であって、
骨に固定するための軸(2)と、最大外径(E)を含む球形外面部分を有する頭部(3)とを備える固定要素(1)と、
頂端部(5a)および底端部(5b)と、ロッドを受けるためのチャネル(12)と、頂端部(5a)から底端部(5b)の方向に延在し、ボア軸(C)を有するボア(51)と、底端部に頭部を受けるための、球形の座部(52)とを備える受け部(5)と、
頭部の上のボア内に配置された圧力要素(6)とを含み、圧力要素(6)は、頭部(3)の球形外面部分と接触する頭部接触面部分(62,63)を有し、頭部接触面部分は、軸方向に、頭部(3)の前記球形外面部分に沿って、頭部(3)の最大外径(E)を含む領域を越えて延在する、少なくとも周方向に離れた2つの突起(63)を含み、
頭部(3)は、受け部(5)に対して回動可能であり、圧力要素(6)を介して頭部に圧力を加えることによって角度をなして固定することができ、
圧力要素(6)は、頭部(3)上に設置されるまで、前記球形外面部分と前記突起との間の摩擦によって頭部をクランプして締めるように、頭部(3)に比べて突起(63)の所定の領域のみで小さな寸法を有し、突起(63)の前記所定の領域は、前記頭部の最大外形(E)よりも小さい内径(D 2 )を有する球形部分(63b)を有し、少なくとも該球形部分(63b)が頭部(3)の最大外形(E)の領域を越えて延在し、
前記突起は、前記受け部に設けられた収容スペース(55)の中に少なくとも部分的に延在する、多軸骨固定装置。 - 収容スペースは、座部(52)の複数の凹部(55)により形成される、請求項1に記載の多軸骨固定装置。
- 突起(63)は各々、頭部の最大外径(E)と同じまたはわずかに大きい球内径を有する第1球形部分(63a)と頭部の最大外径(E)より小さい球状の前記内径(D 2 )を有する第2球形部分(63b)とを有し、少なくとも第2球形部分(63b)は、前記突起(63)の自由端まで延びるとともに、前記圧力要素(6)が頭部(3)に設置されるときに、頭部の最大外径(E)を有する領域を越えて延在する、請求項1または2に記載の多軸骨固定装置。
- 圧力要素(6)は、実質的に円筒形であり、頂端部(6a)と底端部(6b)とを有し、前記圧力要素(6)はその下端部に頭部に面する球形凹部(62)を有する、請求項1から3のいずれか1項に記載の多軸骨固定装置。
- 突起(63)を除いて頭部接触面部分(62)は、頭部(3)の直径と同じまたはわずかに大きい内径を有する、請求項1から4のいずれか1項に記載の多軸骨固定装置。
- 前記収容スペース(55)は、突起(63)を広げるための空間を与える形状を有する、請求項1から5のいずれか1項に記載の多軸骨固定装置。
- 圧力要素が頭部(3)上に設置されるときに、突起(63)は収容スペース(55)の内壁と接触しない、請求項1から6のいずれか1項に記載の多軸骨固定装置。
- 凹部(55)は球形の形状を有する、請求項2から7のいずれか1項に記載の多軸骨固定装置。
- 凹部(55)の数は突起(63)の数と一致する、請求項2から8のいずれか1項に記載の多軸骨固定装置。
- 突起(63)は、実質的に自由端に向かって狭くなるV字状の輪郭を有する、請求項1から9のいずれか1項に記載の多軸骨固定装置。
- 受け部(5)は、ロッド受けチャネル(53)を有し、
圧力要素(6)は、ロッド受けチャネル(61)を有し、
受け部のロッド受けチャネルと圧力要素のロッド受けチャネルとが位置合わせされるときに、突起(63)が凹部(55)の位置に配置される、請求項2から10のいずれか1項に記載の多軸骨固定装置。 - 受け部(5)と協働して頭部(3)を座部(52)にロックし、ロッド(100)をチャネル(12)に固定するロック装置(7)が設けられる、請求項1から11のいずれか1項に記載の多軸骨固定装置。
- 周方向に等間隔で離れた複数の突起が設けられた、請求項1〜12のいずれか1項に記載の多軸骨固定装置。
- 2つの突起(63)が設けられて、頭部を両側からクランプする、請求項1から12のいずれか1項に記載の多軸骨固定装置。
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201161580012P | 2011-12-23 | 2011-12-23 | |
| EP11195714.8A EP2606841B1 (en) | 2011-12-23 | 2011-12-23 | Polyaxial bone anchoring device |
| US61/580,012 | 2011-12-23 | ||
| EP11195714.8 | 2011-12-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2013132556A JP2013132556A (ja) | 2013-07-08 |
| JP6076069B2 true JP6076069B2 (ja) | 2017-02-08 |
Family
ID=45491312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012276785A Active JP6076069B2 (ja) | 2011-12-23 | 2012-12-19 | 多軸骨固定装置 |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US9445847B2 (ja) |
| EP (1) | EP2606841B1 (ja) |
| JP (1) | JP6076069B2 (ja) |
| KR (1) | KR20130073848A (ja) |
| CN (1) | CN103169532B (ja) |
| ES (1) | ES2570782T3 (ja) |
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-
2011
- 2011-12-23 EP EP11195714.8A patent/EP2606841B1/en active Active
- 2011-12-23 ES ES11195714T patent/ES2570782T3/es active Active
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2012
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- 2012-12-19 CN CN201210553257.0A patent/CN103169532B/zh active Active
- 2012-12-19 JP JP2012276785A patent/JP6076069B2/ja active Active
- 2012-12-21 KR KR1020120150883A patent/KR20130073848A/ko not_active Ceased
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Also Published As
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|---|---|
| CN103169532A (zh) | 2013-06-26 |
| JP2013132556A (ja) | 2013-07-08 |
| ES2570782T3 (es) | 2016-05-20 |
| EP2606841A1 (en) | 2013-06-26 |
| KR20130073848A (ko) | 2013-07-03 |
| US9445847B2 (en) | 2016-09-20 |
| US20170049483A1 (en) | 2017-02-23 |
| US9924974B2 (en) | 2018-03-27 |
| US20130165977A1 (en) | 2013-06-27 |
| EP2606841B1 (en) | 2016-03-09 |
| CN103169532B (zh) | 2017-04-12 |
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