JPH06129B2 - Vertebral body correction device - Google Patents
Vertebral body correction deviceInfo
- Publication number
- JPH06129B2 JPH06129B2 JP2340993A JP34099390A JPH06129B2 JP H06129 B2 JPH06129 B2 JP H06129B2 JP 2340993 A JP2340993 A JP 2340993A JP 34099390 A JP34099390 A JP 34099390A JP H06129 B2 JPH06129 B2 JP H06129B2
- Authority
- JP
- Japan
- Prior art keywords
- vertebral body
- screw
- rod
- pedicle
- movable member
- 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
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
- A61B17/7059—Cortical plates
-
- 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
- A61B17/7041—Screws or hooks combined with longitudinal elements which do not contact vertebrae with single longitudinal rod offset laterally from single row of screws or hooks
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は脊椎椎体を修復固定する際に用いる脊椎椎体矯
正用器具に関する。Description: TECHNICAL FIELD The present invention relates to a spinal vertebral body correction instrument used for repair and fixation of a spinal vertebral body.
（従来の技術） 腰椎すべり症、腰椎不安定症、脊椎管狭窄症、腰椎骨
折、脱臼などを治療する場合、脊椎椎体を修復固定する
ために脊椎椎体矯正用器具が用いられている。(Prior Art) When treating lumbar spondylolisthesis, lumbar spinal instability, spinal canal stenosis, lumbar fracture, dislocation, etc., a vertebral body correction instrument is used to repair and fix the vertebral body.
この種の従来の脊椎椎体矯正用器具及びその使用方法に
ついて第９図及び第１０図を参照して説明すると、第９
図は脊椎を背側から見た図、第１０図は横断面図を示
す。A conventional spinal vertebra correction device of this type and a method of using the same will be described with reference to FIGS. 9 and 10.
The figure shows the spine viewed from the dorsal side, and FIG. 10 shows a transverse sectional view.
１は棘突起、３は椎弓根、５は横突起、７は脊柱管、９
は脊椎椎体で、脊椎椎体９の修復固定手術では、例え
ば、治療すべく箇所の三つの椎弓根３の両側から夫々脊
椎椎体９にわたってペディクルスクリュー１１を埋入
し、このペディクルスクリュー１１の埋入方向を第１０
図に一点鎖線１１Ａで示す。1 is a spinous process, 3 is a pedicle, 5 is a lateral process, 7 is a spinal canal, 9
Is a vertebral body, and in the repair and fixation operation of the vertebral body 9, for example, a pedicle screw 11 is implanted from both sides of the three pedicles 3 at a location to be treated over the vertebral body 9. Set the embedding direction of the screw 11 to 10
This is indicated by the alternate long and short dash line 11A.
次に、脊椎椎体矯正用器具１３を各椎弓根３にあてが
う。Next, the vertebral body correction instrument 13 is applied to each pedicle 3.
脊椎椎体矯正用器具１３は、第１１図に正面図で示すよ
うに、脊椎椎体９の列方向に沿った所定の長さで板状に
形成され、三つの長孔１５が間隔をおいて脊椎椎体９の
列方向に延出形成されている。As shown in the front view in FIG. 11, the vertebral body correction instrument 13 is formed in a plate shape with a predetermined length along the row direction of the vertebral body 9, and three long holes 15 are formed at intervals. It is formed so as to extend in the column direction of the vertebral body 9.
そして、脊椎椎体矯正用器具１３の三つの長孔１５に各
ペディクルスクリュー１１の結合用ねじ部を挿通させ、
ナットにより脊椎椎体矯正用器具１３を締結し、ナット
から露出するペディクルスクリュー１１の結合用ねじ部
を切り落とす。Then, the connecting screw portions of the pedicle screws 11 are inserted into the three elongated holes 15 of the vertebral body correction instrument 13,
The vertebral body correction instrument 13 is fastened with the nut, and the connecting screw portion of the pedicle screw 11 exposed from the nut is cut off.
そして、両側の脊椎椎体矯正用器具１３により脊椎椎体
９を正しい位置に固定させ、手術を終了する。Then, the vertebral bodies 9 on both sides are fixed in the correct positions by the vertebral body correction instruments 13, and the operation is completed.
（発明が解決しようとする課題） しかしながら、脊椎椎体９や椎弓根３の形状はそれ自体
が各々異なっており、且つ、脊椎椎体矯正用器具１３の
三つの長溝１５は、脊椎椎体９の列方向に間隔をおいて
脊椎椎体９の列方向に延出形成されているため、二つの
長溝１５にペディクルスクリュー１１の結合用ねじ部が
挿通されるものの、残りの一つの長溝１５に結合用ねじ
部が挿通され難く、更に、狭い箇所に板状の脊椎椎体矯
正用器具１３を挿入しなければならないため、腸骨稜が
障害になるなど手術が面倒で手間取る等の問題があっ
た。(Problems to be Solved by the Invention) However, the shapes of the vertebral bodies 9 and the pedicles 3 are different from each other, and the three long grooves 15 of the vertebral body correction device 13 are the vertebral bodies. 9 are formed so as to extend in the row direction of the vertebral body 9 at intervals in the row direction of the vertebral body 9, so that the connecting screw portions of the pedicle screw 11 are inserted into the two long grooves 15, but the remaining one long groove. It is difficult to insert the connecting screw portion into 15, and since the plate-shaped spinal vertebra correction instrument 13 has to be inserted in a narrow place, there is a problem that the iliac crest is obstructed and the operation is troublesome and time-consuming. was there.
本発明は前記事情に鑑み案出されたものであって、本発
明の目的は、椎弓根から脊椎椎体にわたって埋入された
複数のねじ部材に簡単に結合でき、また、狭い箇所にも
容易に設置でき、脊椎椎体の修復固定手術を短時間で行
なえる脊椎椎体矯正用器具を提供することにある。The present invention has been devised in view of the above circumstances, and an object of the present invention is to easily connect to a plurality of screw members embedded from a pedicle to a vertebral body, and also to a narrow place. An object of the present invention is to provide a spinal vertebral body correction instrument that can be easily installed and can perform repair and fixation surgery of the spinal vertebral body in a short time.
（課題を解決するための手段） 前記目的を達成するため本発明は、脊椎椎体の列方向に
間隔をおいて椎弓根から脊椎椎体にわたって埋入された
少なくとも三本以上のねじ部材にナットを介して締結さ
れ、前記ねじ部材を連結する脊椎椎体矯正用器具であっ
て、所定の長さを有する棒状部材と、前記ねじ部材の数
に対応した数で設けられ棒状部材にその長手方向に移動
可能に結合された複数の可動部材と、各可動部材を前記
棒状部材に固定する固定手段と、各可動部材に形成され
前記ねじ部材を挿通させる挿通用孔とを備え、少なくと
も一つの可動部材の前記挿通用孔は前記棒状部材の長手
方向と直交する方向に延出する長溝状に形成されている
ことを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention provides at least three or more screw members that are embedded from the pedicle to the vertebral body at intervals in the row direction of the vertebral body. A vertebral body correction instrument that is fastened via a nut and connects the screw members, wherein a rod-shaped member having a predetermined length and a number of rod members provided in a number corresponding to the number of the screw members are provided on the rod member. A plurality of movable members movably coupled to each other in the direction, fixing means for fixing each movable member to the rod-shaped member, and an insertion hole formed in each movable member for inserting the screw member, and at least one The insertion hole of the movable member is formed in a long groove shape extending in a direction orthogonal to the longitudinal direction of the rod-shaped member.
（実施例） 以下、本発明の好適一実施例を添付図面に従って説明す
る。(Embodiment) A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.
第１図は本発明に係る脊椎椎体矯正用器具の正面図、第
２図は同底面図を示す。FIG. 1 is a front view of the vertebral body correction instrument according to the present invention, and FIG. 2 is a bottom view of the same.
２１は脊椎椎体矯正用器具で、脊椎椎体矯正用器具２１
は、棒状部材２３と、棒状部材２３にその長手方向に移
動可能に結合された可動部材２５と、可動部材２５を棒
状部材２３に固定するねじ２７とから構成されている。Reference numeral 21 is a spinal vertebra correction device.
Is composed of a rod-shaped member 23, a movable member 25 movably coupled to the rod-shaped member 23 in the longitudinal direction thereof, and a screw 27 for fixing the movable member 25 to the rod-shaped member 23.
前記棒状部材２３は、修復固定すべく脊椎椎体９の数に
対応した長さで形成され、この実施例では断面が矩形を
呈する。The rod-shaped member 23 has a length corresponding to the number of vertebral bodies 9 for repair and fixation, and has a rectangular cross section in this embodiment.
可動部材２５は、修復固定すべく脊椎椎体９の数に対応
した数で設けられ、この実施例では三つ設けられてい
る。The movable members 25 are provided in a number corresponding to the number of the vertebral bodies 9 for repair and fixation, and three movable members 25 are provided in this embodiment.
可動部材２５の基部には前記棒状部材２３に移動可能に
結合される孔２９が形成されている。A hole 29 is formed at the base of the movable member 25 so as to be movably coupled to the rod member 23.
また、この基部に形成した二つのねじ孔に夫々ねじ２７
が螺合され、ねじ２７を締め付けることにより可動部材
２５が棒状部材２３に位置決め固定される。In addition, the two screw holes formed in this base are provided with screws 27 respectively.
Are screwed together, and the movable member 25 is positioned and fixed to the rod-shaped member 23 by tightening the screw 27.
可動部材２５の先部には、ペディクルスクリューを挿通
させるための挿通用孔３１が形成されている。An insertion hole 31 for inserting the pedicle screw is formed at the tip of the movable member 25.
この実施例では、上下に位置する可動部材２５の挿通用
孔３１がペディクルスクリューに対応した大きさで円形
に、中間に位置する可動部材２５の挿通用孔３１が棒状
部材２３の長手方向と直交する方向に延出する長溝状に
形成されている。In this embodiment, the insertion hole 31 of the movable member 25 located above and below is circular in size corresponding to the pedicle screw, and the insertion hole 31 of the movable member 25 located in the middle is aligned with the longitudinal direction of the rod member 23. It is formed in a long groove shape extending in the orthogonal direction.
また、上位に位置する可動部材２５はＬ字状に屈曲形成
されている。Further, the movable member 25 located on the upper side is bent and formed in an L shape.
次に、使用方法について第３図及び第４図を参照して説
明する。Next, the method of use will be described with reference to FIGS. 3 and 4.
第３図は脊椎を背側から見た図、第４図は同横断面図を
示し、この実施例では、従来例と同様に三つの脊椎椎体
９を修復固定する場合について説明する。FIG. 3 is a view of the spine viewed from the back side, and FIG. 4 is a transverse cross-sectional view thereof. In this embodiment, a case where three vertebral bodies 9 are repaired and fixed as in the conventional example will be described.
まず、治療すべく箇所の三つの椎弓根３の両側から夫々
脊椎椎体９にわたってペディクルスクリュー３３を埋入
し、ペディクルスクリュー３３の埋入方向を第４図に一
点鎖線３３Ａで示す。First, the pedicle screw 33 is embedded from both sides of the three pedicles 3 to be treated over the respective vertebral bodies 9, and the embedding direction of the pedicle screw 33 is shown by a chain line 33A in FIG.
ペディクルスクリュー３３は第５図に平面図で、第６図
に正面図で示すように、椎弓根３から脊椎椎体９にわた
って埋入される埋入用ねじ部３３１と、大径部３３２
と、結合用ねじ部３３３とを備える。As shown in the plan view of FIG. 5 and the front view of FIG. 6, the pedicle screw 33 has an embedding screw portion 331 and a large diameter portion 332 that are embedded from the pedicle 3 to the vertebral body 9.
And a coupling screw portion 333.
また、ナット３５は、第７図に平面図で、第８図に正面
図で示すように、６角部３５１と、大径部３５２とから
なり、中心には結合用ねじ部３３３に螺合するねじ孔３
５３が形成されている。Further, as shown in a plan view of FIG. 7 and a front view of FIG. 8, the nut 35 is composed of a hexagonal portion 351 and a large diameter portion 352, and is screwed into the coupling screw portion 333 at the center. Screw hole 3
53 is formed.
この実施例では、ペディクルスクリュー３３の大径部３
３２と、ナット３５の大径部３５２の締め付け面を夫々
球面３３４，３５４で形成し、各ペディクルスクリュー
３３の向きが異なっていても、脊椎椎体矯正用器具２１
に簡単に締結できるようにしている。In this embodiment, the large diameter portion 3 of the pedicle screw 33 is used.
32 and the fastening surface of the large diameter portion 352 of the nut 35 are formed by spherical surfaces 334 and 354, respectively, and even if the orientations of the pedicle screws 33 are different, the vertebral body correction device 21
It is easy to fasten.
次に、脊椎椎体矯正用器具２１を各椎弓根３の両側にあ
てがう。Next, the vertebral body correction tool 21 is applied to both sides of each pedicle 3.
この場合、修復固定する箇所の棘突起１は第３図に斜線
で示すように切除され、この切除された部分の近傍に棒
状部材２３を配置する。In this case, the spinous process 1 at the portion to be repaired and fixed is excised as shown by the diagonal lines in FIG. 3, and the rod-shaped member 23 is arranged near the excised portion.
そして、埋入された三本のペディクルスクリュー３３に
合わせて各可動部材２５を移動させ、ねじ２７により各
可動部材２５を固定し、次に、各挿通用孔３１にペディ
クルスクリュー３３の結合用ねじ部３３３を挿通させ、
ナット３５により固定する。或は、三本のペディクルス
クリュー３３に合わせて可動部材２５を移動させ、各挿
通用孔３１にペディクルスクリュー３３の結合用ねじ部
３３３を挿通させ、ナット３５により固定し、次に、ね
じ２７により各可動部材２５を固定する。Then, each movable member 25 is moved according to the three embedded pedicle screws 33, each movable member 25 is fixed by a screw 27, and then each pedicle screw 33 is connected to each insertion hole 31. Insert the screw part 333 for
It is fixed by the nut 35. Alternatively, the movable member 25 is moved according to the three pedicle screws 33, the coupling screw portion 333 of the pedicle screw 33 is inserted into each insertion hole 31, and fixed by the nut 35, and then the screw Each movable member 25 is fixed by 27.
そして、ナット３５から露出する結合用ねじ部３３３を
切り落とし、手術を終了する。Then, the connecting screw portion 333 exposed from the nut 35 is cut off, and the operation is completed.
尚、上位に位置する可動部材２５の形状は、Ｌ字状に屈
曲させてあるが、これは、Ｌ字状に屈曲させることで可
動部材２５から突出する棒状部材２３の上端の位置を下
げ、棒状部材２３の上端が切除していない椎関節３Ａに
当たらないようにしたものである。The shape of the movable member 25 positioned above is bent in an L shape, but this is bent in an L shape to lower the position of the upper end of the rod member 23 protruding from the movable member 25. The upper end of the rod-shaped member 23 is designed so as not to hit the uncut vertebral joint 3A.
本実施例に係る脊椎椎体強制用器具２１によれば、各可
動部材２５を移動できるので、二つの挿通用孔３１に各
ペディクルスクリュー３３の結合用ねじ部３３３を挿通
させる点で従来と同様であるが、残りの一つの挿通用孔
３１がその長溝状の形状と可動部材２５の移動により、
二次元方向において調節可能であるので、すべての挿通
用孔３１に各ペディクルスクリュー３３の結合用ねじ部
３３３を簡単に挿通できる。According to the vertebral body compulsion instrument 21 according to the present embodiment, since each movable member 25 can be moved, it is different from the conventional one in that the coupling screw portion 333 of each pedicle screw 33 is inserted into the two insertion holes 31. Similarly, the remaining one insertion hole 31 has a long groove shape and the movable member 25 moves,
Since the adjustment is possible in the two-dimensional direction, the connecting screw portion 333 of each pedicle screw 33 can be easily inserted into all the insertion holes 31.
また、棒状部材２３と可動部材２５とからなり、従来の
板状の脊椎椎体矯正用器具１３に比べてかさばることも
ないので、狭い箇所にも容易に設置でき、更に、長手方
向への伸展、短縮が可能である。Further, since it is composed of the rod-shaped member 23 and the movable member 25 and is not bulky as compared with the conventional plate-shaped spinal vertebra correction device 13, it can be easily installed in a narrow place and further extended in the longitudinal direction. , Can be shortened.
また、棒状部材２３が椎弓根３上よりも棘突起１寄りに
位置するため、後側方骨移植のための骨移植が容易とな
る。Further, since the rod-shaped member 23 is located closer to the spinous process 1 than on the pedicle 3, bone grafting for posterolateral bone grafting is facilitated.
従って、脊椎椎体９の修復固定手術を短時間で簡単に行
なうことが可能となる。Therefore, it becomes possible to easily perform the repair and fixation operation of the vertebral body 9 in a short time.
尚、挿通用孔３１は全て長溝状に形成してもよいが、可
動部材２５を棒状部材２３に対して移動させることで、
二つの挿通用孔３１にはペディクルスクリュー３３が挿
通されるので、例えば、ペディクルスクリュー３３が５
本の時には、両端の挿通用孔３１をペディクルスクリュ
ー３３に対応させた径で円形に形成し、残りの挿通用孔
３１を長溝状に形成すればよい。Although all the insertion holes 31 may be formed in a long groove shape, by moving the movable member 25 with respect to the rod-shaped member 23,
Since the pedicle screw 33 is inserted into the two insertion holes 31, for example, the pedicle screw 33 is 5
In the case of a book, the insertion holes 31 at both ends may be formed in a circular shape having a diameter corresponding to the pedicle screw 33, and the remaining insertion holes 31 may be formed in a long groove shape.
（発明の効果） 以上の説明で明らかなように本発明に係る脊椎椎体矯正
用器具によれば、椎弓根から脊椎椎体にわたって埋入さ
れた複数のねじ部材に簡単に結合させることができ、ま
た、狭い箇所にも容易に設置でき、脊椎椎体の修復固定
手術を短時間で簡単に行うことが可能となる。(Effects of the Invention) As apparent from the above description, according to the vertebral body correction instrument of the present invention, it is possible to easily connect the plurality of screw members embedded from the pedicle to the vertebral body. In addition, it can be easily installed in a narrow space, and repair and fixation of the vertebral body can be performed easily in a short time.
第１図は本考案に係る脊椎椎体矯正用器具の正面図、第
２図は同底面図、第３図は脊椎を背側から見た図、第４
図は同横断面図、第５図はペディクルスクリューの平面
図、第６図は同正面図、第７図はナットの平面図、第８
図は同正面図、第９図は脊椎を背側から見た図、第１０
図は同横断面図、第１１図は従来の脊椎椎体矯正用器具
の正面図である。 尚図中、１は棘突起、３は椎弓根、９は脊椎椎体、２１
は脊椎椎体矯正用器具、２３は棒状部材、２５は可動部
材、３３はペディクルスクリュー、３５はナットであ
る。FIG. 1 is a front view of a spinal vertebra correction device according to the present invention, FIG. 2 is a bottom view of the same, and FIG. 3 is a view of the spine seen from the back side.
The figure is the same cross-sectional view, FIG. 5 is a plan view of a pedicle screw, FIG. 6 is a front view of the same, FIG. 7 is a plan view of a nut, and FIG.
The figure shows the same front view, and FIG. 9 shows the spine seen from the back side.
The figure is a cross-sectional view of the same, and FIG. 11 is a front view of a conventional vertebral body correction device. In the figure, 1 is a spinous process, 3 is a pedicle, 9 is a vertebral body, 21
Is a vertebral body correction instrument, 23 is a rod-shaped member, 25 is a movable member, 33 is a pedicle screw, and 35 is a nut.
Claims (1)
ら脊椎椎体にわたって埋入された少なくとも三本以上の
ねじ部材にナットを介して締結され、前記ねじ部材を連
結する脊椎椎体矯正用器具であって、 所定の長さを有する棒状部材と、 前記ねじ部材の数に対応した数で設けられ棒状部材にそ
の長手方向に移動可能に結合された複数の可動部材と、 各可動部材を前記棒状部材に固定する固定手段と、 各可動部材に形成され前記ねじ部材を挿通させる挿通用
孔とを備え、 少なくとも一つの可動部材の前記挿通用孔は前記棒状部
材の長手方向と直交する方向に延出する長溝状に形成さ
れている、 ことを特徴とする脊椎椎体矯正用器具。1. A spine which is fastened via a nut to at least three or more screw members which are embedded from the pedicle to the vertebral body at intervals in the row direction of the vertebral body and which connect the screw members. A vertebral body correction instrument, a rod-shaped member having a predetermined length, and a plurality of movable members provided in a number corresponding to the number of the screw members and movably coupled to the rod-shaped member in its longitudinal direction, Fixing means for fixing each movable member to the rod-shaped member, and an insertion hole formed in each movable member for inserting the screw member, wherein the insertion hole of at least one movable member is a longitudinal direction of the rod-shaped member. An instrument for correcting a vertebral body, characterized by being formed in a long groove shape extending in a direction orthogonal to the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2340993A JPH06129B2 (en) | 1990-11-30 | 1990-11-30 | Vertebral body correction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2340993A JPH06129B2 (en) | 1990-11-30 | 1990-11-30 | Vertebral body correction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04208150A JPH04208150A (en) | 1992-07-29 |
| JPH06129B2 true JPH06129B2 (en) | 1994-01-05 |
Family
ID=18342212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2340993A Expired - Fee Related JPH06129B2 (en) | 1990-11-30 | 1990-11-30 | Vertebral body correction device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06129B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02215455A (en) * | 1989-02-08 | 1990-08-28 | Acromed Corp | Transverse connector for backbone rectifying instrument |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH063551Y2 (en) * | 1989-01-17 | 1994-02-02 | 旭光学工業株式会社 | Bone plate |
-
1990
- 1990-11-30 JP JP2340993A patent/JPH06129B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02215455A (en) * | 1989-02-08 | 1990-08-28 | Acromed Corp | Transverse connector for backbone rectifying instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04208150A (en) | 1992-07-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |