JPS639434A - Spinelike projection spacer - Google Patents
Spinelike projection spacerInfo
- Publication number
- JPS639434A JPS639434A JP61154720A JP15472086A JPS639434A JP S639434 A JPS639434 A JP S639434A JP 61154720 A JP61154720 A JP 61154720A JP 15472086 A JP15472086 A JP 15472086A JP S639434 A JPS639434 A JP S639434A
- Authority
- JP
- Japan
- Prior art keywords
- spacer
- bone
- spinelike
- axial
- canal
- 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.)
- Granted
Links
- 125000006850 spacer group Chemical group 0.000 title claims description 15
- 238000000034 method Methods 0.000 claims description 10
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- 229910010293 ceramic material Inorganic materials 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 229910052586 apatite Inorganic materials 0.000 claims description 3
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 210000000988 bone and bone Anatomy 0.000 description 10
- 210000003205 muscle Anatomy 0.000 description 3
- 208000006386 Bone Resorption Diseases 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 2
- 230000024279 bone resorption Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000009469 Ossification of Posterior Longitudinal Ligament Diseases 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 206010041549 Spinal cord compression Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 210000003692 ilium Anatomy 0.000 description 1
- 238000002684 laminectomy Methods 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 210000004446 longitudinal ligament Anatomy 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 230000003387 muscular Effects 0.000 description 1
- 210000000944 nerve tissue Anatomy 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000011164 ossification Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 230000036573 scar formation Effects 0.000 description 1
- 210000000278 spinal cord Anatomy 0.000 description 1
- 230000036262 stenosis Effects 0.000 description 1
- 208000037804 stenosis Diseases 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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
- 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
- A61B17/7071—Implants for expanding or repairing the vertebral arch or wedged between laminae or pedicles; Tools therefor
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Neurology (AREA)
- Surgery (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)
- Prostheses (AREA)
- Surgical Instruments (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。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は頚椎を柱管拡大術を行う際、拡大された棘突起
間に挿入し、固定するための練突起スペーサに関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a ramid process spacer for inserting and fixing between enlarged spinous processes when performing columnar canal enlargement of the cervical vertebrae.
従来から、頚椎部のを柱管狭窄症や後縦靭帯骨化症によ
ってを髄が圧迫され麻痺が発生する場合の治療方法とし
て、椎弓切除術が用いられているが、この術弐によると
、硬膜外腔の廠痕形成や脊椎の不安定性、彎曲異常、後
縦靭帯骨化症の進展などを術後に生じやすいという欠点
が有り、最近推弓を残し、再建するを推管拡大術が一般
に施行されるようになった。Conventionally, laminectomy has been used as a treatment method for cases where the spinal cord is compressed and paralysis occurs due to trabecular canal stenosis or posterior longitudinal ligament ossification in the cervical vertebrae. However, there are disadvantages in that postoperative scar formation in the epidural space, instability of the spine, abnormal curvature, and progression of ossification of the posterior longitudinal ligament are likely to occur postoperatively, and recently the proximal arch has been left behind and the proximal canal enlarged during reconstruction. The technique has become commonly practiced.
この場合量大、拡大した椎弓を拡大位に保つため腸骨な
どの自家骨を挿入し固定する方法が行われていた。In this case, in order to maintain the enlarged vertebral arch in an enlarged position, autologous bone such as the ilium was inserted and fixed.
上記の如く、靭帯の他の部位から採取した整形骨を移植
することから、癒着性は良好であるものの、骨吸収を起
こし易（、骨吸収を起こした場合には、を推管の拡大に
よる除圧効果が減少するという欠点がある。また、はと
んどの場合、腸骨稜から採骨していたが、腸骨稜は中殿
筋の起姶部であるため、採骨することにより中殿筋力が
弱くなる。その結果、下肢の筋バランスを崩し、パウエ
ルスの理論に基づくトレンデンブルグ波行を招き易いと
いう不都合があった。As mentioned above, since orthopedic bone taken from other parts of the ligament is transplanted, although the adhesion is good, bone resorption is likely to occur (and if bone resorption occurs, it may be caused by enlargement of the tube). The disadvantage is that the decompression effect is reduced.In addition, in most cases, bone was collected from the iliac crest, but since the iliac crest is the origin of the gluteus medius muscle, it is difficult to collect bone from the iliac crest. The muscle strength of the gluteal medius becomes weak.As a result, the muscular balance of the lower limbs is disrupted, which is disadvantageous in that it tends to cause Trendenburg waves based on Pauwels' theory.
上記の如き問題点に鑑みて本発明ではを柱管拡大後、を
柱管を十分に押し拡げ拡大し、神経組織に対する圧迫を
防ぐ目的で、錬突起の正中部で縦割した推弓間に、生体
為害性を持たず、かつ機械的強度の大きなアルミナ、ジ
ルコニア、アパタイトなどのセラミック体で構成した軸
突起スペーサを挿入することによって解決する。In view of the above-mentioned problems, in the present invention, after expanding the columnar canal, the columnar canal is sufficiently expanded and expanded, and in order to prevent pressure on the nerve tissue, the trabeculae are divided vertically at the midline of the protrusion. This can be solved by inserting a axial protrusion spacer made of a ceramic material such as alumina, zirconia, or apatite that is not harmful to living organisms and has high mechanical strength.
以下、本発明実施例を図によって説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図において、１は実施例としての軸突起スペーサを
示し、この軸突起スペーサ１は生体為害性をもたないア
ルミナ、ジルコニア、アパタイトなどのセラミック材か
らなり、はぼ先細状のブロック形状にフランジ部４を有
し、分割した軸突起間に位置し、少なくとも骨と当接す
る面には、１コの歯状の凸凹２が形成しである。In Fig. 1, reference numeral 1 indicates an axial protrusion spacer as an example. This axial protrusion spacer 1 is made of a ceramic material such as alumina, zirconia, or apatite, which is not harmful to living organisms, and has a tapered block shape. It has a flange portion 4, is located between the divided axial protrusions, and has one tooth-shaped unevenness 2 formed at least on the surface that comes into contact with the bone.
この凹凸２としては図示したものに限らず複数の突起を
一体的に備えたものであってもよく、要するに骨と当接
する場合、移動することなく、安定的に位置するような
表面形状にしである。また３は、セラミック材からなる
軸突起スペーサ１にあけられた貫通孔である。The unevenness 2 is not limited to the one shown in the figure, but may be one integrally provided with a plurality of protrusions.In other words, the surface shape should be such that when it comes into contact with the bone, it will not move and will be positioned stably. be. Reference numeral 3 denotes a through hole formed in the shaft protrusion spacer 1 made of a ceramic material.
このような本発明に係る軸突起スペーサ１の使用態様例
を第２図に示すが、軸突起を正中部で分割した骨間に示
すが、軸突起スペーサ１を挿入しさらに、軸突起スペー
サｌの貫通孔３に綱線５を挿通し締結固定を行う。また
、フランジ４によって軸突起スペーサｌは移動すること
なく、所定の位置に固定することができる。An example of how the axial projection spacer 1 according to the present invention is used is shown in FIG. The cable wire 5 is inserted into the through hole 3 and fastened and fixed. Furthermore, the flange 4 allows the shaft protrusion spacer l to be fixed at a predetermined position without movement.
叙上のように本発明によれば、を髄圧迫麻痺などに対し
て行われる、を柱管拡大術において、軸突起を正中部に
て分割した骨間に挿入されるスペーサをセラミック材で
構成したことから、任意の大きさ、形状のスペースを常
時準備しておくことができ、また、このスペーサは骨吸
収されることがなくさらに、生体為害性をもたないこと
から骨内に残留されたまま取り出す必要がないばかりで
なく、患者を自家骨採取による負担から開放したり、腸
骨稜の切り取りに伴う中殿筋の損傷を回避できるなど人
類福祉にとって寄与するところ大である。As described above, according to the present invention, in trabecular canal expansion surgery performed for spinal cord compression paralysis, the spacer is made of a ceramic material and inserted between the bones where the axial process is divided at the midline. Because of this, a space of any size and shape can be prepared at all times, and since this spacer does not absorb bone and is not harmful to living organisms, it remains in the bone. Not only does it not need to be removed directly, it also relieves the patient from the burden of harvesting autologous bone and avoids damage to the gluteus medius muscle caused by cutting the iliac crest, making it a great contribution to human welfare.
第１図は本発明実施例にがかる軸突起スペーサの斜視図
、第２図は本発明実施例に係る軸突起スペーサを軸突起
の分割個所に装着した状態を示す椎体の断面図である。
１：軸突起スペーサ
２：凹凸
３：貫通孔
４：フランジFIG. 1 is a perspective view of an axial process spacer according to an embodiment of the present invention, and FIG. 2 is a sectional view of a vertebral body showing a state in which the axial process spacer according to an embodiment of the present invention is attached to a divided part of the axial process. 1: Axial projection spacer 2: Unevenness 3: Through hole 4: Flange
Claims (1)
サであって、該スペーサがアルミナ、ジルコニア、アパ
タイトなどのセラミック材で形成されていることを特徴
とする棘突起スペーサ。What is claimed is: 1. A spinous process spacer for insertion into a divided part of a spinous process of a vertebra, the spacer being made of a ceramic material such as alumina, zirconia, or apatite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61154720A JPH067836B2 (en) | 1986-06-30 | 1986-06-30 | Spinous spacer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61154720A JPH067836B2 (en) | 1986-06-30 | 1986-06-30 | Spinous spacer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS639434A true JPS639434A (en) | 1988-01-16 |
| JPH067836B2 JPH067836B2 (en) | 1994-02-02 |
Family
ID=15590486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61154720A Expired - Lifetime JPH067836B2 (en) | 1986-06-30 | 1986-06-30 | Spinous spacer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH067836B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003101319A3 (en) * | 2002-05-30 | 2004-01-22 | Sdgi Holdings Inc | Laminoplasty devices and methods |
| JP2006512147A (en) * | 2002-12-24 | 2006-04-13 | アヌレックス テクノロジーズ，インコーポレーテッド | Intervertebral disc annulus reconstruction method and intervertebral disc annulus stent |
| US9808350B2 (en) | 2012-01-31 | 2017-11-07 | Stryker European Holdings I, Llc | Laminoplasty implant, method and instrumentation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54155695A (en) * | 1978-05-30 | 1979-12-07 | Kyoto Ceramic | Ceramic portion material for bone broken portion prosthesis |
| JPS6028423U (en) * | 1983-07-29 | 1985-02-26 | 株式会社椿本チエイン | Cable, hose support device |
| JPS6140884A (en) * | 1984-07-31 | 1986-02-27 | 株式会社 香蘭社 | Ceramic member for vital prosthesis |
-
1986
- 1986-06-30 JP JP61154720A patent/JPH067836B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54155695A (en) * | 1978-05-30 | 1979-12-07 | Kyoto Ceramic | Ceramic portion material for bone broken portion prosthesis |
| JPS6028423U (en) * | 1983-07-29 | 1985-02-26 | 株式会社椿本チエイン | Cable, hose support device |
| JPS6140884A (en) * | 1984-07-31 | 1986-02-27 | 株式会社 香蘭社 | Ceramic member for vital prosthesis |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003101319A3 (en) * | 2002-05-30 | 2004-01-22 | Sdgi Holdings Inc | Laminoplasty devices and methods |
| AU2003240820B2 (en) * | 2002-05-30 | 2008-04-10 | Warsaw Orthopedic, Inc. | Laminoplasty devices and methods |
| US8105366B2 (en) | 2002-05-30 | 2012-01-31 | Warsaw Orthopedic, Inc. | Laminoplasty plate with flanges |
| US10314621B2 (en) | 2002-05-30 | 2019-06-11 | Warsaw Orthopedic, Inc. | Laminoplasty devices and methods |
| JP2006512147A (en) * | 2002-12-24 | 2006-04-13 | アヌレックス テクノロジーズ，インコーポレーテッド | Intervertebral disc annulus reconstruction method and intervertebral disc annulus stent |
| US9808350B2 (en) | 2012-01-31 | 2017-11-07 | Stryker European Holdings I, Llc | Laminoplasty implant, method and instrumentation |
| US10039646B2 (en) | 2012-01-31 | 2018-08-07 | Stryker European Holdings I, Llc | Laminoplasty implant, method and instrumentation |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH067836B2 (en) | 1994-02-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |