JP4589693B2 - 弾性ロッド部品固定のための固定装置を備えたペディクル・スクリュー - Google Patents
弾性ロッド部品固定のための固定装置を備えたペディクル・スクリュー Download PDFInfo
- Publication number
- JP4589693B2 JP4589693B2 JP2004310654A JP2004310654A JP4589693B2 JP 4589693 B2 JP4589693 B2 JP 4589693B2 JP 2004310654 A JP2004310654 A JP 2004310654A JP 2004310654 A JP2004310654 A JP 2004310654A JP 4589693 B2 JP4589693 B2 JP 4589693B2
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- JP
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- Prior art keywords
- pedicle screw
- pedestal
- fixing
- recess
- fixing plug
- 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.)
- Expired - Fee Related
Links
- 230000000087 stabilizing effect Effects 0.000 claims abstract 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 40
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002994 synthetic fiber Polymers 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims 1
- 239000003381 stabilizer Substances 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 239000007943 implant Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
Images
Classifications
-
- 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
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/7004—Longitudinal elements, e.g. rods with a cross-section which varies along its length
- A61B17/7005—Parts of the longitudinal elements, e.g. their ends, being specially adapted to fit in the screw or hook heads
-
- 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
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
- A61B17/7031—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other made wholly or partly of flexible material
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Neurology (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Transmission Devices (AREA)
Description
2 ねじ部
3 スクリュー
4 台座部
5 固定栓
6 台座凹部
6a,8a,22 突条部又は溝部
7 係合突起部
8 保持凹部
9 係合部
10 係合凹部
12,13 凹部
14 ロッド部品
101 固定装置
102 ねじ部
103 スクリュー
104 台座部
105 固定栓
106 台座凹部
106a,108a、122 突条部又は溝部
107 係合突起部
108 保持凹部
110 係合凹部
114 ロッド部材
116 バックル横材
205 固定栓
208 保持凹部
208a 突条部又は溝部
209 フック
220 略S字状の部分
Claims (8)
- 弾性ロッド部品を固定する固定装置を有するペディクル・スクリューであって、
略U字形状の台座凹部を有する台座部を備え、前記台座凹部には前記ペディクル・スクリューの前記台座部を閉鎖するように固定栓を挿入可能であり、前記台座部は、自身の中に配置可能な、脊柱を安定させる機能を果たす弾性ロッド部品を受け、それを保持手段によって保持するためのものであり、
前記固定栓が締め金の機能を果たし、その結果前記ロッド部品の長手方向に作用する力を前記ペディクル・スクリューへ伝達することが可能となるように、前記ロッド部品、前記台座部の略U字形状の台座凹部、及び前記固定栓の各々は互いに対応する突条部又は溝部表面構造を有し、前記表面構造はそれぞれの接触箇所で一定形態を維持するように互いに係合し、
前記ロッド部品、前記台座部の略U字形状の台座凹部、及び前記固定栓の各々の前記突条部または溝部表面構造は前記ロッド部品に対して横方向に延びていることを特徴とする、ペディクル・スクリュー。 - 請求項1記載のペディクル・スクリューであって、
前記保持手段は、前記固定栓に設けられた係合手段と、前記略U字形状の台座凹部内の対応する受け取り手段とからなり、前記係合手段は前記固定栓が前記台座部内へ配置される際に、自動的に定位置に固定されることを特徴とする、ペディクル・スクリュー。 - 請求項2記載のペディクル・スクリューであって、
前記係合手段は、前記固定栓に設けられた少なくとも2つの逆向きのフックとして設計され、互いに弾性移動自在に設けられることによって、前記固定栓は前記台座部の2本のアーム上に設けられた係合凹部と係合し、前記挿入状態において安定した位置につくことが可能となることを特徴とする、ペディクル・スクリュー。 - 請求項3記載のペディクル・スクリューであって、
前記固定栓には、前記各フックに隣接する窪みまたは突起部が設けられ、これらの各窪みまたは各突起部に対して器具が係合し、前記各フックに隣接する前記各窪みまたは前記各突起部を共に加圧することによって前記各フックの間隔を狭めることができ、それによって、取り外しの際には前記固定栓を取り外すことができ、また、前記各フックの略中央の窪みにより正確な挿入を実現できることを特徴とする、ペディクル・スクリュー。 - 請求項1記載のペディクル・スクリューであって、
前記台座凹部の突条部または溝部は前記台座部が形成する前記アームの端部まで延在することを特徴とする、ペディクル・スクリュー。 - 請求項3又は請求項4記載のペディクル・スクリューであって、
前記固定栓内で、互いに対応して弾性移動自在に配置された前記2つの逆向きのフックの間に配置された部分が、弾性力付与部分として設計されることを特徴とする、ペディクル・スクリュー。 - 請求項1記載のペディクル・スクリューであって、
前記固定栓は、例えばポリウレタンなどの弾性合成材料で構成されることを特徴とする、ペディクル・スクリュー。 - 請求項1記載のペディクル・スクリューであって、
前記略U字形状の台座凹部には少なくとも1つの係合突起部が設けられており、前記係合突起部は、ロッド部品の挿入時にねじれ防止を用いた修正可能な事前固定を実現できるように、挿入されたロッド部品の係合が可能となるような位置に設けられることを特徴とする、ペディクル・スクリュー。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03405786A EP1527742B1 (de) | 2003-10-31 | 2003-10-31 | Verschlussvorrichtung für Pedikelschrauben zur Fixierung von elastischen Stabelementen |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005131394A JP2005131394A (ja) | 2005-05-26 |
JP4589693B2 true JP4589693B2 (ja) | 2010-12-01 |
Family
ID=34400628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004310654A Expired - Fee Related JP4589693B2 (ja) | 2003-10-31 | 2004-10-26 | 弾性ロッド部品固定のための固定装置を備えたペディクル・スクリュー |
Country Status (7)
Country | Link |
---|---|
US (1) | US7597707B2 (ja) |
EP (1) | EP1527742B1 (ja) |
JP (1) | JP4589693B2 (ja) |
AT (1) | ATE333841T1 (ja) |
CA (1) | CA2485157C (ja) |
DE (1) | DE50304374D1 (ja) |
ES (1) | ES2269957T3 (ja) |
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EP2001418A1 (en) * | 2006-03-22 | 2008-12-17 | Pioneer Surgical Technology, Inc. | Low top bone fixation system and method for using the same |
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- 2003-10-31 AT AT03405786T patent/ATE333841T1/de not_active IP Right Cessation
- 2003-10-31 EP EP03405786A patent/EP1527742B1/de not_active Expired - Lifetime
- 2003-10-31 DE DE50304374T patent/DE50304374D1/de not_active Expired - Lifetime
- 2003-10-31 ES ES03405786T patent/ES2269957T3/es not_active Expired - Lifetime
-
2004
- 2004-10-14 CA CA2485157A patent/CA2485157C/en not_active Expired - Fee Related
- 2004-10-18 US US10/965,841 patent/US7597707B2/en not_active Expired - Fee Related
- 2004-10-26 JP JP2004310654A patent/JP4589693B2/ja not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
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CA2485157C (en) | 2010-09-14 |
US7597707B2 (en) | 2009-10-06 |
ES2269957T3 (es) | 2007-04-01 |
CA2485157A1 (en) | 2005-04-30 |
DE50304374D1 (de) | 2006-09-07 |
EP1527742A1 (de) | 2005-05-04 |
US20050096659A1 (en) | 2005-05-05 |
ATE333841T1 (de) | 2006-08-15 |
EP1527742B1 (de) | 2006-07-26 |
JP2005131394A (ja) | 2005-05-26 |
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