JP3025265B1 - Wire rod fixing device - Google Patents
Wire rod fixing deviceInfo
- Publication number
- JP3025265B1 JP3025265B1 JP11135841A JP13584199A JP3025265B1 JP 3025265 B1 JP3025265 B1 JP 3025265B1 JP 11135841 A JP11135841 A JP 11135841A JP 13584199 A JP13584199 A JP 13584199A JP 3025265 B1 JP3025265 B1 JP 3025265B1
- Authority
- JP
- Japan
- Prior art keywords
- wire rod
- implant
- screwed
- rod
- fixing device
- 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 - Lifetime
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
- A61B17/7001—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
- A61B17/7008—Longitudinal elements, e.g. rods with a cross-section which varies along its length with parts of, or attached to, the longitudinal elements, bearing against an outside of the screw or hook heads, e.g. nuts on threaded rods
-
- 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
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/7011—Longitudinal element being non-straight, e.g. curved, angled or branched
-
- 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
- A61B17/7034—Screws or hooks with U-shaped head or back through which longitudinal rods pass characterised by a lateral opening
Abstract
【要約】
【目的】 可撓性を有するワイヤーロッドを完全に固定
する。
【構成】 外面におねじ部２６を有し、ワイヤーロッド
２０に嵌めたときに一端部で一方のインプラント１１、
１２の側面に当接可能なほぼ筒状の第１部材２５と、第
１部材２５のおねじ部２６と螺合可能なめねじ部３１を
有し、ワイヤーロッド２０に嵌めたのちおねじ部２６に
めねじ部３１を螺合させた状態で他方のインプラント１
１′、１２′の側面に当接可能なほぼ筒状の第２部材２
９と、第１部材２５のおねじ部２６に螺合して第２部材
２９の端面に接し、第１、第２両部材２５、２９の緩み
止めとなるロック部材３４とから成るワイヤーロッドの
固定装置。Abstract: [Object] To completely fix a flexible wire rod. [Structure] A threaded portion 26 is provided on an outer surface, and one end portion of one of the implants 11, when fitted to the wire rod 20,
12 has a substantially cylindrical first member 25 which can be brought into contact with the side surface, and a female screw portion 31 which can be screwed with the external thread portion 26 of the first member 25. The other implant 1 with the female screw portion 31 screwed thereto
A substantially cylindrical second member 2 that can contact the side surfaces of 1 'and 12'
9 and a lock member 34 which is screwed into the external thread portion 26 of the first member 25 and is in contact with the end face of the second member 29 to prevent the first and second members 25 and 29 from loosening. Fixing device.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、骨に植設される複
数のインプラントを連絡するワイヤーロッドの固定のた
めの装置に関するものである。The present invention relates to a device for fixing a wire rod connecting a plurality of implants to be implanted in bone.
【０００２】[0002]
【従来の技術】例えば損傷や病変の生じた複数の椎体に
インプラントを植設し、各インプラントをロッドを用い
て結合し、各椎体を一定の位置関係に保つことが行なわ
れる。上記ロッドとして従来は文字通り棒状の部材が使
用されてきた。しかしこれを取り付けるには、困難な曲
げ加工を手術中に行わねばならず、手間取ったり、或い
は無理な力を加えて骨にひびを入れたりするというよう
な問題があった。2. Description of the Related Art For example, implants are implanted in a plurality of damaged vertebral bodies, and the implants are connected to each other using a rod to maintain a fixed positional relationship between the vertebral bodies. Conventionally, a rod-shaped member has been used literally as the rod. However, in order to attach it, it is necessary to perform a difficult bending process during the operation, and there is a problem that it takes time or cracks the bone by applying excessive force.
【０００３】そこで本発明者はワイヤーを上記ロッドと
して使用することに着目し、開発を進めるとともに、成
果の一部については既に出願をした。このワイヤーロッ
ドは自由に曲げられ、どのような角度にも設定できるた
め手術をし易い上、悪影響がないという特徴がある。し
かしながら、完全な固定のためにはワイヤーの可撓性が
不利となる。[0003] The present inventor has paid attention to using a wire as the rod, and has proceeded with development, and has already applied for a part of the results. This wire rod is freely bent and can be set at any angle, so that it is easy to operate and has no adverse effect. However, the flexibility of the wire is disadvantageous for perfect fixation.
【０００４】[0004]
【発明が解決しようとする課題】本発明は前記の点に着
目してなされたものであり、その課題は、可撓性を有す
るワイヤーロッドの完全な固定の実現を図ることであ
る。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object thereof is to realize complete fixation of a flexible wire rod.
【０００５】[0005]
【課題を解決するための手段】前記の課題等を解決する
ため本発明は、外面におねじ部が形成され、ワイヤーロ
ッドに嵌装したときに一端部で一方のインプラントの側
面に当接可能な、所要の長さを有するほぼ筒状の第１部
材と、上記第１部材のおねじ部と螺合可能なめねじ部が
内面に形成され、ワイヤーロッドに嵌装しておねじ部と
めねじ部とを螺合させた状態で他方のインプラントの側
面に当接可能な、所要の長さを有するほぼ筒状の第２部
材と、第１部材のおねじ部に螺合可能でありかつその状
態で第２部材の端面に接して第１、第２両部材の緩み止
めとなるロック部材とによってワイヤーロッドの固定装
置を構成するという手段を講じたものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems and the like, the present invention has a thread portion formed on an outer surface, and can be brought into contact with a side surface of one implant at one end when fitted on a wire rod. A substantially cylindrical first member having a required length, and an internal thread portion capable of being screwed with the external thread portion of the first member are formed on the inner surface, and the thread portion and the internal thread portion are fitted to a wire rod. A substantially cylindrical second member having a required length and capable of abutting on the side surface of the other implant in a state where the portion is screwed, and capable of being screwed to the external thread of the first member and In this state, there is provided a means for forming a wire rod fixing device by a lock member which comes into contact with an end surface of the second member in order to prevent the first and second members from loosening.
【０００６】[0006]
【発明の実施の形態】本発明に係るワイヤーロッドの固
定装置は、骨に植設される複数のインプラントを連絡す
るワイヤーロッドを剛性の在来のロッドと同様の状態に
固定するものである。ワイヤーロッドは可撓性を有し、
インプラントのロッド受け部に、在来のロッドと同様に
受け支えられ、かつ止めねじにより締め着けられる。止
めねじによる締め付け力を受け止めるために、ワイヤー
にパイプ及びキャップを嵌めることができる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The wire rod fixing device according to the present invention fixes a wire rod connecting a plurality of implants to be implanted in a bone in a state similar to a rigid conventional rod. The wire rod has flexibility,
It is received in the rod receiver of the implant in the same way as a conventional rod and is fastened by a set screw. A pipe and a cap can be fitted on the wire to receive the tightening force of the set screw.
【０００７】インプラントは、骨にねじ込むためのスク
リュー（ねじ）構造を持ち、その外方端部にロッド受け
部が通常は設けられる。ロッド受け部はインプラントの
ねじ軸方向とは交叉する方向を向いており、ワイヤーロ
ッドはそこへ載置ないしは差し込みによって配置され
る。つまりロッド受け部が溝のように開いた構造の場合
には、ワイヤーロッドを載せるように置くことができる
が、貫通孔のように両端以外は閉じた構造の場合には、
ワイヤーロッドを差し込むこととなる。[0007] The implant has a screw (screw) structure for screwing into the bone, and a rod receiving portion is usually provided at the outer end thereof. The rod receiving part is oriented in a direction crossing the screw axis direction of the implant, and the wire rod is placed thereon by placing or inserting. In other words, in the case of a structure in which the rod receiving portion is open like a groove, it can be placed so that the wire rod can be placed.
A wire rod will be inserted.
【０００８】このようなワイヤーロッドの固定のための
装置は、ほぼ筒状の第１部材と、第２部材及びロック部
材とから成る。第１部材と第２部材とは一体となって、
隣接したインプラントの間に介在する。[0008] The device for fixing such a wire rod comprises a substantially cylindrical first member, a second member and a lock member. The first member and the second member are integrated,
Intervening between adjacent implants.
【０００９】第１部材は、外面におねじ部が形成され、
ワイヤーロッドに嵌装したときに一端部で一方のインプ
ラントの側面に当接可能なほぼ筒状の部材である。第１
部材は次に述べる第２部材と一体化して、隣接したイン
プラントの間に介在するために必要な長さを有する。[0009] The first member has a thread portion formed on an outer surface thereof,
It is a substantially cylindrical member that can be in contact with the side surface of one implant at one end when fitted on a wire rod. First
The member has the necessary length to be integral with the second member described below and intervene between adjacent implants.
【００１０】上記第２部材は、第１部材のおねじ部と螺
合可能なめねじ部を内面に形成したほぼ筒状の部材であ
る。第２部材はワイヤーロッドに嵌装してそのめねじ部
と第１部材のおねじ部とを螺合させた状態で、他方のイ
ンプラントの側面に当接可能な所要の長さを有する。The second member is a substantially cylindrical member having an internal thread formed on the inner surface thereof, which can be screwed with the external thread of the first member. The second member has a required length capable of abutting on the side surface of the other implant in a state where the female screw portion is fitted on the wire rod and the female screw portion of the second member is screwed with the male screw portion of the first member.
【００１１】ロック部材は上記第１部材のおねじ部に螺
合可能であり、かつ螺合した状態で第２部材の端面に接
して、第１、第２両部材の緩み止めとなる。このロック
部材はロックナットに相当する。The lock member can be screwed to the external thread of the first member, and in contact with the end surface of the second member in the screwed state, prevents the first and second members from loosening. This lock member corresponds to a lock nut.
【００１２】ワイヤーロッドは可撓性を有する点に特徴
があり、インプラントの両側でワイヤーロッドを曲げた
場合、第１部材と第２部材が隣接インプラントの側面に
隙き間なく面接触可能になるとは限らない。そこでイン
プラントの側面を凸状の球面形とし、他方、第１部材及
び第２部材の端面を凹状の円形ないしは球面形として面
接触可能な条件を与えることができる。なお、インプラ
ントのワイヤーロッドを受け支えるロッド受け部と、前
述したスクリューとは部材として１個のものである必要
はなく、２部品以上からなる構造であっても良い。The wire rod is characterized in that it is flexible. When the wire rod is bent on both sides of the implant, the first member and the second member can be brought into surface contact with the side surfaces of the adjacent implant without any gap. Not necessarily. Therefore, it is possible to provide a condition in which the side surfaces of the implant are formed into a convex spherical shape, and the end surfaces of the first member and the second member are formed into a concave circular shape or a spherical shape. The rod receiving portion for supporting the wire rod of the implant and the screw described above need not be a single member, and may have a structure including two or more parts.
【００１３】[0013]
【実施例】以下図面を参照して本発明をより詳細に説明
する。２種を例示したインプラント１１、１２、１
１′、１２′は、下部がおねじ部１３、１４となってお
り、上端部がロッド受け部１５、１６となっている１個
の部材から成る。一方のロッド受け部１５は溝状構造の
ものであり、もう一方のロッド受け部１６は貫通孔構造
のものである。なお尖端を有しないおねじ部１４をもつ
ものは神経を刺激することがより少ない等の特徴を有す
るので、適用部位に応じて使い分ける。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. Two types of implants 11, 12, 1
1 'and 12' are composed of one member in which lower portions are male screw portions 13 and 14, and upper end portions are rod receiving portions 15 and 16. One rod receiving part 15 has a groove-like structure, and the other rod receiving part 16 has a through-hole structure. In addition, since the thing which has the external thread part 14 which does not have a point has the feature that it stimulates a nerve less, it uses properly according to an application part.
【００１４】ロッド受け部１５、１６に配置されるワイ
ヤーロッド２０の止めねじ１７による締め着けのために
ねじ込み孔１８、１９が形成されている。またロッド受
け部１５、１６が設けられたインプラント１１、１２の
外方端部は球状に形成され、ロッド受け部１５、１６の
位置はその球の直径方向と一致する（図２参照）。Screw holes 18 and 19 are formed for fastening the wire rods 20 disposed on the rod receiving portions 15 and 16 with the set screws 17. The outer ends of the implants 11 and 12 provided with the rod receiving portions 15 and 16 are formed in a spherical shape, and the positions of the rod receiving portions 15 and 16 coincide with the diameter direction of the sphere (see FIG. 2).
【００１５】ワイヤーロッド２０は、ワイヤー構造を持
つロッド本体２１と、そこに嵌め合わせるパイプ２２及
び端部キャップ２３とを有する。例示のロッド本体２１
はステンレス鋼線の撚り線構造を持つ。パイプ２２及び
端部キャップ２３は止めねじ１７を受け止めることによ
りねじ締めを確実にするもので、ロッド本体２１に嵌め
合わせたのちかしめ変形により一体化される。The wire rod 20 has a rod body 21 having a wire structure, a pipe 22 and an end cap 23 fitted therein. Illustrative rod body 21
Has a stranded stainless steel wire structure. The pipe 22 and the end cap 23 secure the screw by receiving the set screw 17, and are fitted to the rod body 21 and then integrated by swaging.
【００１６】例示の第１部材２５は外周面のほぼ全体に
形成されたおねじ部２６を有し、一端部には多角形等の
スパナ掛け部２７を有する全体として筒形のものであ
る。外方のスパナ掛け部２７の側の端面２８は一方のイ
ンプラント１１、１２の球状端部と密に接触可能なよう
に凹状の円形に形成されている。例示の第２部材２９は
内周面に上記おねじ部２６と螺合可能なめねじ部３１を
有し、外周面には多角形等のスパナ掛け部３２を有する
全体として筒形のものである。同じく外方端となる側の
端面３３は他方のインプラント１１′、１２′の球状端
部と密に接触可能なように凹状の円形に形成されてい
る。The illustrated first member 25 has a male screw portion 26 formed substantially all over the outer peripheral surface, and has a cylindrical shape as a whole having a spanner hook portion 27 such as a polygon at one end. The end face 28 on the side of the outer spanner hook 27 is formed in a concave circular shape so as to be able to come into close contact with the spherical ends of the implants 11 and 12. The illustrated second member 29 has a female screw portion 31 that can be screwed with the male screw portion 26 on the inner peripheral surface, and has a wrench hooking portion 32 such as a polygon on the outer peripheral surface, and is entirely cylindrical. . Similarly, the end surface 33 on the side which is the outer end is formed in a concave circular shape so as to be able to come into close contact with the spherical end portions of the other implants 11 'and 12'.
【００１７】これらの第１、第２両部材２５、２９はそ
のおねじ部２６とめねじ部３１とで螺合一体化して、伸
縮可能な１種の介在物若しくはスペーサとなり、隣接す
るインプラント１１、１２の側面において球面同士で接
触可能である（図４参照）。この状態を維持してワイヤ
ーロッドの固定を完全にするために、ロック部材３４が
組み合わされる。ロック部材３４は、内面に前記おねじ
部２６と螺合可能なめねじ部３５、外面にスパナ掛け部
３６を有する。The first and second members 25 and 29 are screwed and integrated with the external thread portion 26 and the internal thread portion 31 to form one kind of expandable and contractable inclusion or spacer. Twelve side surfaces can be contacted by spherical surfaces (see FIG. 4). In order to maintain this state and complete the fixing of the wire rod, the lock member 34 is combined. The lock member 34 has an internal thread 35 that can be screwed into the external thread 26 on the inner surface, and a spanner hook 36 on the outer surface.
【００１８】各図中、３７はロッド受け部１５、１６の
端部開口の拡がり部であり、可撓性を有するワイヤーロ
ッド２０の曲がりに対応するために設けられている。In each of the figures, reference numeral 37 denotes a widening portion of the end opening of the rod receiving portions 15 and 16, which is provided to cope with the bending of the flexible wire rod 20.
【００１９】このような本装置は、椎体Ｖの各々に植設
された複数のインプラント１２…を連絡するワイヤーロ
ッド２０に取り付けて、各インプラントの位置に合わせ
て曲げられたワイヤーロッド２０を剛性物と化す。各イ
ンプラント１２…間において本装置は第１部材２５と第
２部材２９との間隔を最適の寸法とした状態とした上で
ロック部材３４により最終固定され、その結果椎体の位
置関係が概ね一定に保たれる（図５参照）。In such a device, a plurality of implants 12 implanted in each of the vertebral bodies V are attached to the connecting wire rods 20, and the wire rods 20 bent in accordance with the positions of the implants are rigidly connected. Turn into things. Between the implants 12..., The device is finally fixed by the locking member 34 after the distance between the first member 25 and the second member 29 is set to an optimum size, so that the positional relationship of the vertebral bodies is substantially constant. (See FIG. 5).
【００２０】[0020]
【発明の効果】本発明は以上の如く構成されかつ作用す
るものであるから、可撓性を有するワイヤーロッドによ
る曲げ変形容易という恩恵を享受しながら、その所要の
形態を維持するために、完全にワイヤーロッドを固定
し、所期の目的を達成することができるという効果を奏
する。Since the present invention is constructed and operates as described above, in order to maintain the required form while maintaining the required form while enjoying the benefit of easy bending deformation by the flexible wire rod. In this case, the wire rod is fixed to the wire rod, and the intended purpose can be achieved.
【図１】本発明に係るワイヤーロッドの固定装置の１実
施例を示す分解斜視図。FIG. 1 is an exploded perspective view showing one embodiment of a wire rod fixing device according to the present invention.
【図２】（ａ）インプラントの横断面図。 （ｂ）インプラントの縦断面図。 （ｃ）インプラントの側面図。FIG. 2 (a) is a cross-sectional view of an implant. (B) Longitudinal sectional view of the implant. (C) Side view of the implant.
【図３】本装置の縦断面図。FIG. 3 is a longitudinal sectional view of the present apparatus.
【図４】（ａ）本装置をインプラントへ取り付けた１例
を示す平面図。 （ｂ）本装置をインプラントへ取り付けた１例を示す側
面図。FIG. 4 (a) is a plan view showing an example in which the present device is attached to an implant. (B) A side view showing an example in which the present device is attached to an implant.
【図５】本装置の使用状態を示す斜視図。FIG. 5 is a perspective view showing a use state of the present apparatus.
Claims (3)
絡するワイヤーロッドの固定のための装置であって、外
面におねじ部が形成され、ワイヤーロッドに嵌装したと
きに一端部で一方のインプラントの側面に当接可能な、
所要の長さを有するほぼ筒状の第１部材と、上記第１部
材のおねじ部と螺合可能なめねじ部が内面に形成され、
ワイヤーロッドに嵌装しておねじ部とめねじ部とを螺合
させた状態で他方のインプラントの側面に当接可能な、
所要の長さを有するほぼ筒状の第２部材と、第１部材の
おねじ部に螺合可能でありかつその状態で第２部材の端
面に接して第１、第２両部材の緩み止めとなるロック部
材とからなることを特徴とするワイヤーロッドの固定装
置。1. A device for fixing a wire rod connecting a plurality of implants to be implanted in a bone, wherein a threaded portion is formed on an outer surface, and one end at one end when fitted to the wire rod. Abut the side of the implant,
A substantially cylindrical first member having a required length, and an internal thread portion that can be screwed with the external thread portion of the first member are formed on an inner surface,
It is possible to abut on the side surface of the other implant in a state where the thread portion and the female thread portion are screwed together by being fitted to the wire rod,
A substantially cylindrical second member having a required length, and a first member, which can be screwed to an external thread of the first member, and in which state, comes into contact with an end surface of the second member to prevent the first and second members from loosening. A fixing device for a wire rod, comprising:
し、他方、第１部材及び第２部材の端面を凹状の円形と
することにより、隙き間のない接触を可能とした請求項
１記載のワイヤーロッドの固定装置。2. The implant according to claim 1, wherein the side surfaces of the implant have a convex spherical shape, and the end surfaces of the first member and the second member have a concave circular shape, thereby enabling contact without gaps. Wire rod fixing device.
ロッド本体と、そこに嵌め合わせるパイプ及び端部キャ
ップとを有する請求項１記載のワイヤーロッドの固定装
置。3. The wire rod fixing device according to claim 1, wherein the wire rod includes a rod body having a wire structure, and a pipe and an end cap fitted therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11135841A JP3025265B1 (en) | 1999-05-17 | 1999-05-17 | Wire rod fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11135841A JP3025265B1 (en) | 1999-05-17 | 1999-05-17 | Wire rod fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP3025265B1 true JP3025265B1 (en) | 2000-03-27 |
| JP2000325358A JP2000325358A (en) | 2000-11-28 |
Family
ID=15161022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11135841A Expired - Lifetime JP3025265B1 (en) | 1999-05-17 | 1999-05-17 | Wire rod fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3025265B1 (en) |
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1999
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| KR200476358Y1 (en) | 2013-08-30 | 2015-02-24 | 황민석 | Rod for fixing the spine |
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| Publication number | Publication date |
|---|---|
| JP2000325358A (en) | 2000-11-28 |
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| EXPY | Cancellation because of completion of term |