JP3025265B1 - Wire - rod securing device - Google Patents

Wire - rod securing device

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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
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Japan
Prior art keywords
member
wire rod
implant
portion
wire
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.)
Active
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JP11135841A
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Japanese (ja)
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JP2000325358A (en
Inventor
英雄 一青
Original Assignee
株式会社ロバート・リード商会
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Priority to JP11135841A priority Critical patent/JP3025265B1/en
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Publication of JP3025265B1 publication Critical patent/JP3025265B1/en
Publication of JP2000325358A publication Critical patent/JP2000325358A/en
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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002Longitudinal elements, e.g. rods
    • A61B17/7004Longitudinal elements, e.g. rods with a cross-section which varies along its length
    • A61B17/7008Longitudinal 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002Longitudinal elements, e.g. rods
    • A61B17/7011Longitudinal element being non-straight, e.g. curved, angled or branched
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7032Screws or hooks with U-shaped head or back through which longitudinal rods pass
    • A61B17/7034Screws 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。 Abstract: OBJECTIVE fully secure the wire rod having flexibility. 【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、 [Configuration] has a male thread portion 26 on the outer surface, one of the implant 11 at one end when fitted to the wire rod 20,
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 Includes a first member 25 substantially capable of contacting the tubular on the side surface 12, a male screw portion 26 and the threadable female screw portion 31 of the first member 25, Nochioneji portion 26 fitted to the wire rod 20 the other implant 1 in a state in which is screwed the female screw portion 31 to
1′、12′の側面に当接可能なほぼ筒状の第2部材2 1 ', 12' substantially tubular second member 2 which can abut against the side surface of the
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。 9, screwed to the male thread portion 26 of the first member 25 in contact with the end face of the second member 29, the first, wire rods made of locking member 34 for the locking of the second double members 25, 29 locking device.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【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 relates to a device for the wire rod to contact a plurality of implants implanted in bone fixation.

【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。 Implanted the implant in a plurality of vertebral bodies resulting of the Prior Art For example damage and lesions, each implant coupled with a rod, it is performed to maintain the respective vertebral bodies in a fixed positional relationship. 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。 Member of the conventional literally rod-like as the rod has been used. 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。 But to install this, it not must be performed during surgery difficult bending, lingering or, or there is a problem such as that or put a crack in the bone by the addition of 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。 [0003] The present inventors have focused on the use of wire as the rod, with further development, was already filed for some outcomes. 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。 The wire rod is freely bent, on any angle also surgery because that can be set easily, it is characterized in that there are no adverse effects. 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。 However, the flexible wire is disadvantageous for complete 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 points above, and an object thereof is to reduce the realization of a complete fixation of the wire rod having flexibility.

【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。 Means for Solving the Problems] To solve the above problems such as the present invention, the outer surface the male screw portion is formed on, can abut on the sides of one of the implant at one end when fitted to the wire rod Do, a generally cylindrical first member, the male screw portion of the first member and the threadable female screw portion is formed on the inner surface, male screw portion is fitted to the wire rod and the internal thread having a predetermined length parts and capable of contacting the side surface of the other of the implant in a state in which a is screwed, a substantially cylindrical second member having a required length is threadably to the external thread portion of the first member and the first in a state in contact with the end face of the second member, by a locking member comprising a locking of the second double-member in which took measures that constitute the fixing device of the wire rod.

【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。 Securing device wire rod according to the embodiment of the present invention is used to fix a wire rod to contact the plurality of implants implanted in the bone to the same state as conventional rod stiffness. ワイヤーロッドは可撓性を有し、 Wire rod is flexible,
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。 The rod receiving portion of the implant supported received similarly to the conventional rod, and be worn tightened by a set screw. 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。 To receive the fastening force by the set screw, it can be fitted a pipe and cap the wire.

【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。 [0007] The implant has a screw (screws) structure for screwing the bone, the rod receiving portion normally is provided at its outer end. 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。 Rod receiving portion is oriented in a direction crossing the screw axis of the implant, the wire rods are arranged by placing or insertion thereto. 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、 That is, if a structure in which the rod receiving portion is opened as grooves, may be placed so as to put the wire rod, in the case of structures other than both ends closed as the through holes,
ワイヤーロッドを差し込むこととなる。 So that the insertion of the wire rod.

【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。 [0008] device for fixing such wire rod is composed of a generally tubular first member, a second member and the locking member. 第1部材と第2部材とは一体となって、 The first member and the second member together,
隣接したインプラントの間に介在する。 Interposed between adjacent implants.

【0009】第1部材は、外面におねじ部が形成され、 [0009] The first member has a male screw portion is formed on the outer surface,
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。 Is substantially cylindrical member which can come into contact with the side surface of one of the implant at one end when fitted to the wire rod. 第1 First
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。 Member is integral with the second member to be described below, has a length required to interposed between the adjacent implant.

【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。 [0010] The second member is substantially cylindrical member having a male thread portion and the threadable female screw portion of the first member is formed on the inner surface. 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 has a state in which is screwed a male thread portion of its internal thread portion first member fitted to the wire rod, the other side to be able to contact a required length of the implant.

【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。 [0011] the locking member is threadably to the external thread portion of the first member, and in screwed state in contact with the end face of the second member, the first, locking of the second double member. このロック部材はロックナットに相当する。 The locking member corresponds to the 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。 [0012] Wire rod is characterized in that a flexible, when bent wire rod on both sides of the implant, when the first member and the second member allows the contact surface without during gap-out to the side of the adjacent implant not necessarily. 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。 Therefore the sides of the implant to a convex spherical shape, the other, it is possible to provide a surface contact possible conditions an end face of the first member and the second member as a concave circular or spherical shape. 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。 Incidentally, a rod receiving portion which supports receiving the wire rod of the implant is not necessary and a screw described above is of the one as member may be a structure composed of 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。 EXAMPLES The present invention will be described with reference to the following drawings in more detail. 2種を例示したインプラント11、12、1 Illustrated implant two or 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。 1 ', 12', the lower has a male screw portion 13 and 14, consisting of one member of the upper end portion is in the rod receiving portions 15 and 16. 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。 One rod receiving portion 15 is of groove-shaped structure, the other of the rod receiving portion 16 is of the through hole structure. 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。 Note Since those with male thread portion 14 having no tip is characterized such that less to stimulate nerves, used depending on the site of application.

【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。 [0014] threaded hole 18 and 19 for wearing clamping by grub screws 17 of the wire rod 20 which is arranged on the rod receiving portions 15 and 16 are formed. 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)。 The outer end portion of the implant 11, 12 rod receiving portions 15 and 16 are provided is formed in a spherical shape, the position of the rod receiving portions 15 and 16 coincides 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。 The wire rod 20 includes a rod body 21 having a wire structure, and a pipe 22 and an end cap 23 fitted therein. 例示のロッド本体21 Exemplary rod body 21
はステンレス鋼線の撚り線構造を持つ。 Has a strand construction of stainless steel wire. 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。 Pipes 22 and end cap 23 is intended to ensure screwing by receiving the set screw 17, it is integrated by crimping deformation After fitted to the rod body 21.

【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。 [0016] Exemplary first member 25 has an externally threaded portion 26 formed on substantially the entire outer peripheral surface, at one end is of cylindrical overall with a wrench portion 27 such as a polygon. 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。 Side of the end face 28 of the outer spanner portion 27 is formed in a circular concave so as to be in intimate contact with the spherical end portion of one of the implants 11 and 12. 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。 The second member 29 of the illustrated has the external thread portion 26 and the threadable female screw portion 31 on the inner peripheral surface, is of cylindrical overall with a wrench portion 32 of the polygon or the like on the outer peripheral surface . 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。 Also other implant 11 end surface 33 of the outer end side is ', 12' are formed in a circular concave so as to be in intimate contact with the spherical end portion of the.

【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)。 [0017] These first, second double member 25 and 29 and screwed integrally with the male screw portion 26 and the internal thread portion 31 thereof, becomes stretchable one inclusions or spacers, adjacent implant 11, it is contactable with spherical another in 12 sides (see FIG. 4). 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。 To complete the fixation of the wire rod to maintain this state, the lock member 34 are combined. 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。 Locking member 34, the the inner surface external thread portion 26 and the threadable female screw portion 35, the outer surface has a wrench portion 36.

【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。 [0018] In the figures, 37 is a flare end opening of the rod receiving portions 15 and 16, are provided to accommodate the bending of the wire rod 20 having flexibility.

【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。 [0019] Such the apparatus is attached to a wire rod 20 to contact each multiple implants 12 ... implanted in the vertebral body V, rigid wire rods 20 bent to fit the position of each implant It turns into things. 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)。 The apparatus in each implant 12 ... between is finally fixed by the lock member 34 on which the state of the interval the optimal dimensions of the first member 25 and second member 29, substantially constant positional relationship resulting vertebral body maintained (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 to act and the composition described above, while enjoying the benefit of bending deformation easily by wire rod having flexibility, in order to maintain its desired form, complete the wire rod is fixed to an effect that it is possible to achieve the intended purpose.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【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。 It exploded perspective view showing an embodiment of a fixing device of a wire rod according to the invention; FIG.

【図2】(a)インプラントの横断面図。 2 (a) cross-sectional view of an implant. (b)インプラントの縦断面図。 (B) vertical cross-sectional view of an implant. (c)インプラントの側面図。 (C) side view of the implant.

【図3】本装置の縦断面図。 Longitudinal sectional view of FIG. 3 the device.

【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。 [4] (a) a plan view showing an example of mounting the present device to the implant. (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。 (B) a side view showing an example of mounting the present device to the implant.

【図5】本装置の使用状態を示す斜視図。 Perspective view showing a use state of FIG. 5 the device.

Claims (3)

    (57)【特許請求の範囲】 (57) [the claims]
  1. 【請求項1】 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、 1. A device for fixation of a wire rod to contact a plurality of implants implanted in the bone, the external thread portion is formed on an outer surface, one at one end when fitted to the wire rod capable of contacting the side surface of the implant,
    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、 A substantially cylindrical first member having a required length, the male thread portion of the first member and the threadable female screw portion is formed on an inner surface,
    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、 In a state in which is screwed a male thread portion and the internal thread portion is fitted to the wire rod capable of contacting the side surfaces of the other implant,
    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。 A substantially cylindrical second member having a required length, the first, locking of the second double member with screwed possible is and its state to the external thread portion of the first member in contact with the end face of the second member fixing device of a wire rod which is characterized by comprising a locking member to be.
  2. 【請求項2】 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。 Wherein the side surface of the implant with a convex spherical-shaped, the other, by an end face of the first member and the second member and the concave circular, according to claim 1 which enables contact free between-out gap locking device of the wire rod.
  3. 【請求項3】 ワイヤーロッドは、ワイヤー構造を持つロッド本体と、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. A wire rod, fixed device of the wire rod according to claim 1, further comprising a rod body, and a pipe and end caps fitted thereto with a wire structure.
JP11135841A 1999-05-17 1999-05-17 Wire - rod securing device Active JP3025265B1 (en)

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