JP2013132556A - 多軸骨固定装置 - Google Patents
多軸骨固定装置 Download PDFInfo
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 46
- 238000004873 anchoring Methods 0.000 title claims abstract description 34
- 238000003825 pressing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000001356 surgical procedure Methods 0.000 abstract description 2
- 238000005520 cutting process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000560 biocompatible material Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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, 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
-
- 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
- A61B17/7032—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, 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
-
- 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
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
- A61B17/725—Intramedullary pins, nails or other devices with special means of locking the nail to the bone with locking pins or screws of special form
-
- 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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8033—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
- A61B17/8038—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers the additional component being inserted in the screw head
-
- 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
-
- 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
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- 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)
Abstract
【解決手段】多軸骨固定装置のボア内に配置された圧力要素6は、球形外面部分を有する頭部3の球形外面部分と接触する頭部接触面部分62,63a,63bを有し、頭部接触面部分は、軸方向に最大外径Eを含む頭部領域に沿って延在する、少なくとも周方向に離れた2つの突起63a,63b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3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上に設置されるときに、球形外面部分と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63a,63bの領域のみで小さな寸法を有するように構成され、突起63a,63bは、凹部55の中に少なくとも部分的に延在するように構成されている。
【選択図】図15
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、軸方向に最大外径(E)を含む頭部領域に沿って延在する、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、頭部上に設置されるときに、球形外面部分と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)の領域のみで小さな寸法を有するように構成され、
突起は、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ように構成される、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)より小さい球内径を有する第2球形部分(63b)とを有し、少なくとも第2球形部分(63b)は、頭部の最大外径(E)を有する領域の上方に延在する、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)と下端部(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。
- ボア軸から測定した収容スペース(55)の深さは、突起(63)の外半径より大きい、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。
- 少なくとも2つの突起(63)、好ましくは周方向に等間隔で離れた複数の突起が設けられて、頭部を両側からクランプする、請求項1から7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8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9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10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11のいずれか1項に記載の多軸骨固定装置。 - 座部(52)は球形である、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。
- 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13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 | |
EP11195714.8 | 2011-12-23 | ||
EP11195714.8A EP2606841B1 (en) | 2011-12-23 | 2011-12-23 | Polyaxial bone anchoring device |
US61/580,012 | 2011-12-23 |
Publications (2)
Publication Number | Publication Date |
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JP2013132556A true JP2013132556A (ja) | 2013-07-08 |
JP6076069B2 JP6076069B2 (ja) | 2017-02-08 |
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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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2012
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- 2012-12-19 US US13/720,775 patent/US9445847B2/en active Active
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CN103169532A (zh) | 2013-06-26 |
US9445847B2 (en) | 2016-09-20 |
US9924974B2 (en) | 2018-03-27 |
US20130165977A1 (en) | 2013-06-27 |
CN103169532B (zh) | 2017-04-12 |
EP2606841A1 (en) | 2013-06-26 |
ES2570782T3 (es) | 2016-05-20 |
KR20130073848A (ko) | 2013-07-03 |
US20170049483A1 (en) | 2017-02-23 |
JP6076069B2 (ja) | 2017-02-08 |
EP2606841B1 (en) | 2016-03-09 |
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