JP2922537B2 - Bone fixation device - Google Patents

Bone fixation device

Info

Publication number
JP2922537B2
JP2922537B2 JP1233279A JP23327989A JP2922537B2 JP 2922537 B2 JP2922537 B2 JP 2922537B2 JP 1233279 A JP1233279 A JP 1233279A JP 23327989 A JP23327989 A JP 23327989A JP 2922537 B2 JP2922537 B2 JP 2922537B2
Authority
JP
Japan
Prior art keywords
axis
seat member
adjusting
pin
pin holder
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
Application number
JP1233279A
Other languages
Japanese (ja)
Other versions
JPH0394745A (en
Inventor
高秀 黒川
隆 松下
五三男 大西
重光 小川
庸雄 横塚
昭雄 中沢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RAIFU TEKUNOROJII KENKYUSHO
Nagano Keiki Seisakusho KK
Original Assignee
RAIFU TEKUNOROJII KENKYUSHO
Nagano Keiki Seisakusho KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by RAIFU TEKUNOROJII KENKYUSHO, Nagano Keiki Seisakusho KK filed Critical RAIFU TEKUNOROJII KENKYUSHO
Priority to JP1233279A priority Critical patent/JP2922537B2/en
Priority to US07/578,564 priority patent/US5108394A/en
Priority to EP90309805A priority patent/EP0420430B1/en
Priority to DE69023866T priority patent/DE69023866T2/en
Publication of JPH0394745A publication Critical patent/JPH0394745A/en
Application granted granted Critical
Publication of JP2922537B2 publication Critical patent/JP2922537B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
    • A61B17/64—Devices extending alongside the bones to be positioned
    • A61B17/645—Devices extending alongside the bones to be positioned comprising a framework

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、整形外科用器具として骨折部の固定に使わ
れる骨の固定装置に関する。Description: TECHNICAL FIELD The present invention relates to a bone fixing device used for fixing a fracture as an orthopedic surgical instrument.

〔従来の技術〕[Conventional technology]

一般に、骨折を治療する場合、骨折部を固定するため
の外科用器具として骨の固定装置が使用される。また、
この骨の固定装置は伸縮自在となっており、骨の伸長を
調整するためにも使われる。In general, when treating a fracture, a bone fixing device is used as a surgical instrument for fixing a fracture. Also,
This bone anchoring device is telescopic and is also used to adjust the length of the bone.

係る骨の固定装置としては、本発明者等が昭和63年６
月８日に出願した特願昭63−139245号で開示したものが
ある。これは、第16図に示されるように、直線的な剛性
を有するＸ軸方向に伸びる本体枠１と、この本体枠１に
位置調整可能に固着され、Ｚ軸方向に伸びる骨挿入ピン
２を保持する２つの保持枠3a,3bと、この保持枠3a,3bか
らＹ軸方向に張り出し保持枠3a,3bにおけるＺ軸方向の
軸の回りに揺動可能な揺動板34a,34bと、この揺動板34
a,34bに取り付けられ、Ｙ軸方向の軸の回りに揺動可能
とされ、前記挿入ピン２を着脱自在に保持するためのピ
ンヘッド35a,35bと、前記２つの保持枠3a,3bの少なくと
も一方を本体枠１上において移動せしめる位置調整機構
とを有する構成となっている。As such a device for fixing a bone, the inventors of the present invention proposed a device for fixing a bone in 1988.
An example is disclosed in Japanese Patent Application No. 63-139245 filed on May 8, 2016. As shown in FIG. 16, this comprises a body frame 1 having linear rigidity and extending in the X-axis direction, and a bone insertion pin 2 fixed to the body frame 1 so as to be position-adjustable and extending in the Z-axis direction. Two holding frames 3a, 3b to be held, and swing plates 34a, 34b projecting from the holding frames 3a, 3b in the Y-axis direction and swinging around the Z-axis of the holding frames 3a, 3b, Rocking plate 34
pin heads 35a, 35b, which are attached to a, 34b and are swingable about an axis in the Y-axis direction, and which detachably hold the insertion pin 2, and at least one of the two holding frames 3a, 3b. And a position adjusting mechanism for moving the position on the main body frame 1.

〔発明が解決しようとする課題〕[Problems to be solved by the invention]

ところが、前記固定装置は、ブロック状の揺動板34a,
34bをＺ軸回りで回動できるようにするため、Ｘ軸の棒
部材を複数本用意してその間に揺動板34a,34bを挟むよ
うにする必要がある。また、ピンヘッド35a,35bをＹ軸
回りで回動できるようにするため、揺動板34a,34bの先
端にピンヘッド35a,35bを軸により継ぎ足す必要があ
る。However, the fixing device has a block-shaped swing plate 34a,
In order to enable the 34b to rotate around the Z-axis, it is necessary to prepare a plurality of X-axis rod members and sandwich the rocking plates 34a and 34b therebetween. Further, in order to be able to rotate the pin heads 35a and 35b around the Y axis, it is necessary to add the pin heads 35a and 35b to the ends of the rocking plates 34a and 34b by shafts.

このため、装置が大型化し、重量も増大して取扱い上
負担が大きい。Therefore, the size of the apparatus is increased, the weight is increased, and the handling burden is large.

〔課題を解決するための手段〕[Means for solving the problem]

前記課題を解決するため、本発明は、骨の長さ方向に
沿って配置されるべき一本の棒部材にその軸心たるＸ軸
上の任意位置及びＸ軸回りの任意角度で固定可能に少な
くとも二つのブロック部材が取り付けられており、略板
状の座部材が前記Ｘ軸方向と異方向に伸びるＹ軸を軸心
とする枢軸を介して前記二つのブロック部材の夫々に枢
支されると共に平滑面を介してブロック部材に当接せし
められ、該座部材にはその前記Ｙ軸回りでの回動角を調
整するための回動角調整機構が設けられており、前記座
部材には前記骨に挿入されるべきピンが設けられたピン
保持体がＸ軸方向及びＹ軸方向と異方向に伸びるＺ軸を
軸心とした枢軸を介して枢着され、かつ該ピン保持体に
は該ピン保持体のＺ軸回りでの回動角を調整する回動角
調整機構が設けられた構成を採用している。In order to solve the above-mentioned problem, the present invention is capable of being fixed to one rod member to be arranged along the length direction of a bone at an arbitrary position on the X axis which is the axis and at an arbitrary angle around the X axis. At least two block members are attached, and a substantially plate-shaped seat member is pivotally supported by each of the two block members via a pivot axis extending around the Y axis extending in a direction different from the X axis direction. Abuts on a block member via a smooth surface, and the seat member is provided with a rotation angle adjustment mechanism for adjusting a rotation angle of the seat member about the Y axis. A pin holder provided with a pin to be inserted into the bone is pivotally connected via a pivot about a Z axis extending in a direction different from the X-axis direction and the Y-axis direction, and the pin holder has A rotation angle adjusting mechanism for adjusting a rotation angle of the pin holder about the Z axis is provided. It has adopted the configuration.

なお、座部材の回動角調整機構は、該座部材のＹ軸を
挟んだ両側に穿設された長穴と、該長穴中に挿入される
と共にブロック部材に捩じ込まれた調整ねじとで構成す
ることもできる。The rotation angle adjusting mechanism of the seat member includes an elongated hole formed on both sides of the seat member with the Y axis interposed therebetween, and an adjusting screw inserted into the elongated hole and screwed into the block member. It can also be composed of

また、ピン保持体の回動角調整機構は、該ピン保持体
のＺ軸を挟んだ両側の座部材の方に向かって捩じ込まれ
た調整ねじにより構成することができる。Further, the rotation angle adjusting mechanism of the pin holding body can be constituted by adjusting screws screwed toward seat members on both sides of the Z-axis of the pin holding body.

〔作用〕[Action]

略板状の座部材が平滑面を介してブロック部材に枢支
され、この座部材に対してピン保持部材が枢支されるの
で、ブロック部材に貫通穴を設ける必要がないし、Ｘ軸
方向の棒部材は一本で足り、装置がコンパクトになる。Since the substantially plate-shaped seat member is pivotally supported by the block member via the smooth surface, and the pin holding member is pivotally supported by the seat member, there is no need to provide a through hole in the block member, and the X-axis direction Only one bar member is required, and the device becomes compact.

なお、この装置を使用するには次のような操作を行
う。In order to use this device, the following operation is performed.

まず、骨の長さ方向に沿って棒部材を配置し、ブロッ
ク部材を棒部材に沿って移動させ、また該棒部材の回り
で回動させた後ねじ締め等により固定する。First, a bar member is arranged along the length direction of the bone, the block member is moved along the bar member, and the block member is rotated around the bar member and then fixed by screwing or the like.

次に、座部材の回動角調整機構により、該座部材をＹ
軸回りで所望角度回動させ、固定する。Next, the seat member is moved to Y by the rotation angle adjusting mechanism of the seat member.
Rotate by a desired angle around the axis and fix.

そして更に、ピン保持体の回動角調整機構により、該
ピン保持体のＺ軸回りでの回動角調整を行う。Further, the rotation angle of the pin holder about the Z axis is adjusted by the rotation angle adjustment mechanism of the pin holder.

以上の操作により、ピンは細かく正確に位置調節さ
れ、簡易な操作で折れた骨同士の位置関係が適正に定め
られる。By the above operation, the position of the pin is finely and accurately adjusted, and the positional relationship between the broken bones is appropriately determined by a simple operation.

〔実施例〕〔Example〕

以下、第１図ないし第15図に基づき本発明の一実施例
について説明する。An embodiment of the present invention will be described below with reference to FIGS.

第１図において、符号４は二つに折れた骨を示してい
る。この折れた骨４に対して本発明に係る骨の固定装置
が装着されている。装着はピン５が折れた骨4a,4bに夫
々挿入されることによりなされている。In FIG. 1, reference numeral 4 indicates a broken bone. The bone fixing device according to the present invention is mounted on the broken bone 4. The attachment is performed by inserting the pins 5 into the broken bones 4a and 4b, respectively.

この骨の固定装置は、第１図ないし第３図で示される
ように骨４の長さ方向に沿って配置されるべき棒部材６
を備えており、該棒部材６には二組のピン保持体７が装
着されている。This bone anchoring device comprises a rod member 6 to be arranged along the length of the bone 4 as shown in FIGS.
The rod member 6 is provided with two sets of pin holders 7.

ピン保持体７は夫々ブロック部材８及び座部材９を介
して前記棒部材６に取り付けられている。The pin holder 7 is attached to the bar member 6 via a block member 8 and a seat member 9, respectively.

ブロック部材８は、第４図ないし第６図に示されるよ
うに、棒部材６が挿通される筒部10を備えている。この
筒部10の軸心に沿った箇所には一つの平滑面11が形成さ
れており、その平滑面11の中央には軸受用の円形の穴12
が設けられている。また、筒部10の左右には平滑面11と
面一となった突出片13が設けられており、そこにはねじ
穴14が設けられている。更に、筒部10の一端には第14図
及び第15図に示されるようなブロック部材８を棒部材６
の軸心に沿うＸ軸上の所定箇所に固定するための固定部
材15が固定されている。この固定部材15にはＸ軸に沿っ
た箇所に切除部16が形成され、この切除部を横断して締
め付けねじ（図示せず）を通すねじ穴17が設けられてい
る。The block member 8 includes a cylindrical portion 10 through which the rod member 6 is inserted, as shown in FIGS. One smooth surface 11 is formed at a position along the axis of the cylindrical portion 10, and a circular hole 12 for a bearing is formed at the center of the smooth surface 11.
Is provided. Protrusions 13 are provided on the left and right sides of the cylindrical portion 10 so as to be flush with the smooth surface 11, and a screw hole 14 is provided therein. Further, a block member 8 as shown in FIG. 14 and FIG.
A fixing member 15 for fixing to a predetermined position on the X-axis along the axis of is fixed. A cutout 16 is formed in the fixing member 15 at a position along the X-axis, and a screw hole 17 for passing a tightening screw (not shown) across the cutout is provided.

ブロック部材８は、前記図示しない締め付けねじを緩
めたり締めたりすることにより、Ｘ軸上の任意位置及び
Ｘ軸回りの任意角度に固定されることとなる。The block member 8 is fixed at an arbitrary position on the X axis and at an arbitrary angle around the X axis by loosening or tightening the not-shown tightening screw.

前記ブロック部材８の平滑面11には座部材９があてが
われている。A seat member 9 is applied to the smooth surface 11 of the block member 8.

座部材９は、第７図及び第８図に示されるように、前
記ブロック部材８の平滑面11と略同様な輪郭を有した板
状体であり、その裏面側中央には前記ブロック部材８の
円形の穴12に挿入される筒状の枢軸18が形成されてい
る。該枢軸18はＸ軸方向と異なる方向に伸びるＹ軸の方
向に軸心を有している。このため、座部材９は該枢軸18
を介してブロック部材８に枢支され、該枢軸18の軸心の
回りを回動可能となる。また、座部材９の表面側中央に
は前記枢軸18を挟んで上下にブラケット部19が設けられ
ている。更に、枢軸18を挟んだ両側には弧状の長穴20が
設けられると共にその中に該座部材９を前記ブロック部
材８に対して所望の回動位置で固定しうる座部材のＹ軸
回りの回動角調整機構としての調整ねじ21が挿入されて
いる。該調整ねじ21の先端は前記ブロック部材８の突出
片13のねじ穴14に差し込まれている。また、前記左側の
長穴20の下方と右側の長穴20の上方には後述の調整ねじ
の先端が当接するボール22が夫々埋設されている。As shown in FIGS. 7 and 8, the seat member 9 is a plate-like body having substantially the same contour as the smooth surface 11 of the block member 8, and the block member 8 A cylindrical pivot 18 to be inserted into the circular hole 12 is formed. The pivot 18 has an axis in the Y-axis direction extending in a direction different from the X-axis direction. For this reason, the seat member 9 is
And is rotatable around the axis of the pivot 18 via the block member 8. At the center of the front surface side of the seat member 9, bracket portions 19 are provided vertically above and below the pivot 18. Further, arc-shaped long holes 20 are provided on both sides of the pivot 18, and the seat member 9 around which the seat member 9 can be fixed at a desired rotational position with respect to the block member 8 around the Y axis is provided. An adjusting screw 21 as a rotation angle adjusting mechanism is inserted. The tip of the adjusting screw 21 is inserted into the screw hole 14 of the projecting piece 13 of the block member 8. In addition, balls 22 to which the tips of adjustment screws, which will be described later, abut, are embedded below the left elongated hole 20 and above the right elongated hole 20, respectively.

前記座部材９の前側には、前記ピン保持体７があてが
われている。The pin holder 7 is applied to the front side of the seat member 9.

ピン保持体７は、第９図ないし第11図に示されるよう
に、その裏面側には前記座部材９のブラケット部19と組
み合わされる軸受部23が設けられ、ブラケット部19と軸
受部23との間に枢軸24が挿通されることにより、該ピン
保持体７はシーソー状に前記座部材９上に枢支されてい
る。該枢軸24は、Ｘ軸方向及びＹ軸方向の双方と異なる
方向であるＺ軸の方向に伸びている。As shown in FIGS. 9 to 11, the pin holder 7 is provided with a bearing portion 23 combined with the bracket portion 19 of the seat member 9 on the back side thereof. The pin holder 7 is pivotally supported on the seat member 9 in a seesaw shape by inserting the pivot 24 therebetween. The pivot 24 extends in the Z-axis direction, which is a direction different from both the X-axis direction and the Y-axis direction.

また、ピン保持体７の前記座部材９のボール22に対応
する箇所には調整ねじ挿通部25が突設されている。調整
ねじ挿通部25はブロック状になっており、その中央には
Ｚ軸に沿って縦穴26が穿設され、該縦穴26内に第12図及
び第13図で示されるような円柱片27が回動可能に挿入さ
れている。該円柱片27にはその軸心と直交する方向にね
じ穴28が穿設されており、前記調整ねじ挿通部25には該
ねじ穴28と合致するがそれよりも大径の貫通穴29が設け
られている。該ねじ穴28にはピン保持体７のＺ軸回りの
回動角調整機構としての調整ねじ30が座部材９の方向に
向かって捩じ込まれている。Further, an adjustment screw insertion portion 25 is protruded from a portion of the pin holder 7 corresponding to the ball 22 of the seat member 9. The adjusting screw insertion portion 25 is formed in a block shape, and a vertical hole 26 is formed at the center thereof along the Z axis, and a cylindrical piece 27 as shown in FIGS. It is rotatably inserted. The cylindrical piece 27 is provided with a screw hole 28 in a direction perpendicular to the axis thereof, and the adjusting screw insertion portion 25 has a through hole 29 that matches the screw hole 28 but has a larger diameter. Is provided. An adjusting screw 30 serving as a mechanism for adjusting the rotation angle of the pin holder 7 about the Z axis is screwed into the screw hole 28 toward the seat member 9.

これにより、調整ねじ30を回すことによってピン保持
体の傾きが変化することとなり、またその際円柱片27が
調整ねじ挿通部25内で回動しうることから、調整ねじ30
の先端はピン保持体７の傾きの程度の如何を問わず常に
前記ボール22に接し得る。このため、調整ねじの回転操
作が円滑化され、ピン保持体７の姿勢変更操作がそれだ
け容易になる。As a result, the inclination of the pin holder is changed by turning the adjusting screw 30, and at this time, the cylindrical piece 27 can rotate in the adjusting screw insertion portion 25.
Can always contact the ball 22 irrespective of the degree of inclination of the pin holder 7. For this reason, the rotation operation of the adjusting screw is facilitated, and the operation of changing the attitude of the pin holder 7 becomes easier accordingly.

また、ピンの位置調節を行うに際して、Ｚ軸回りでの
調節はＺ軸方向の枢軸の両側にある調整ねじを回すのみ
で足りる。従って、従来のまず固定ねじを緩め、しかる
後ピン保持体を回し所望位置に来ると再び固定ねじを締
めるというねじ操作とピン保持体回動操作とを別々にし
なければならないという取扱上の面倒を避けることがで
きる。When adjusting the position of the pin, adjustment around the Z-axis only requires turning the adjustment screws on both sides of the pivot in the Z-axis direction. Therefore, it is necessary to loosen the conventional fixing screw first, then turn the pin holder, and then tighten the fixing screw again when the pin holder comes to the desired position. Can be avoided.

ピン保持体７の表側部分にはピン５を受ける溝31aが
形成されており、その上から該溝31aに対応する溝31bを
有したピン押え板部32があてがわれ、締め付けねじ33に
よりピン保持体７に止着されている。A groove 31a for receiving the pin 5 is formed in the front side portion of the pin holder 7, and a pin holding plate portion 32 having a groove 31b corresponding to the groove 31a is applied from above the pin 31a. It is fixed to the holder 7.

次に、本発明の骨の固定装置の作用について説明す
る。Next, the operation of the bone fixing device of the present invention will be described.

折れた骨４にピン５を差し込み、該ピン５をピン保持
体７に対して締め付けねじ33の締め付けにより取り付け
る。このとき、望ましくは各調整ねじ21,30は緩めてお
く。また、これにより骨４の長さ方向に沿って棒部材６
が配置されることになる。The pin 5 is inserted into the broken bone 4, and the pin 5 is attached to the pin holder 7 by tightening the tightening screw 33. At this time, the adjusting screws 21 and 30 are desirably loosened. This also allows the rod member 6 to extend along the length of the bone 4.
Will be arranged.

次に、ブロック部材８を棒部材６に沿って所望箇所ま
で移動させ、かつ所望角度だけ回動させた後固定部材15
の締め付けねじ（図示せず）を回すことによりブロック
部材８を棒部材６に固定する。また、座部材９をＹ軸方
向の枢軸18の回りで所望角度回動させた後、調整ねじ21
を締めて座部材９を固定する。Next, the block member 8 is moved to a desired position along the bar member 6 and rotated by a desired angle, and then the fixing member 15 is rotated.
The block member 8 is fixed to the rod member 6 by turning a tightening screw (not shown). After rotating the seat member 9 by a desired angle about the pivot 18 in the Y-axis direction,
To fix the seat member 9.

そして更に、ピン保持体７の調整ねじ30を用いてピン
保持体７のＺ軸方向の枢軸24回りでの回動角調整を行
う。すなわち、枢軸24の両側にある調整ねじ30を回しつ
つピン保持体７の座部材９上での傾きを変える。Further, the rotation angle of the pin holder 7 about the pivot 24 in the Z-axis direction is adjusted using the adjustment screw 30 of the pin holder 7. That is, the inclination of the pin holder 7 on the seat member 9 is changed while turning the adjusting screws 30 on both sides of the pivot 24.

以上の操作により、ピン５は細かく位置調整され、折
れた骨4a,4b同士の位置関係が適正に定められる。By the above operation, the position of the pin 5 is finely adjusted, and the positional relationship between the broken bones 4a and 4b is properly determined.

〔発明の効果〕〔The invention's effect〕

本発明は、以上のように、略板状の座部材が平滑面を
介してブロック部材に枢支され、この座部材に対してピ
ン保持部材が枢支されるので、ブロック部材に貫通穴を
設ける必要がないし、Ｘ軸方向の棒部材は一本で足り
る。また、Ｙ軸方向での装置の出っ張りが小さくなる。
従って、装置全体の構成がより簡素化、軽量化され取扱
いが容易になるという効果を奏する。According to the present invention, as described above, the substantially plate-shaped seat member is pivotally supported by the block member via the smooth surface, and the pin holding member is pivotally supported by the seat member. There is no need to provide it, and only one bar member in the X-axis direction is sufficient. Also, the protrusion of the device in the Y-axis direction is reduced.
Therefore, there is an effect that the configuration of the entire apparatus is simplified and lightened, and the handling becomes easy.

【図面の簡単な説明】[Brief description of the drawings]

第１図ないし第15図は本発明に係る骨の固定装置の一実
施例を示し、第１図はその全体の斜視図、第２図は部分
切欠平面図、第３図は正面図、第４図ないしは第６図は
ブロック部を示し、第４図はその左側面図、第５図は垂
直断面図、第６図は正面図、第７図及び第８図は座部材
を示し、第７図は第８図中VII−VII線断面図、第８図は
正面図、第９図ないし第11図はピン保持体を示し、第９
図はその背面図、第10図は平面図、第11図は正面図、第
12図及び第13図はピン保持体の調整ねじ挿通部に挿入さ
れる円柱片を示し、第12図はその正面図、第13図は第12
図中XIII−XIII線断面図、第14図及び第15図はブロック
部材の固定部材を示し、第14図はその正面図、第15図は
側面図、第16図は従来例の斜視図である。 ４……骨、５……ピン、６……棒部材、７……ピン保持
体、８……ブロック部材、９……座部材、14……ねじ
穴、18……枢軸、19……ブラケット部、20……長穴、21
……調整ねじ、23……軸受部、24……枢軸、25……調整
ねじ挿通部、27……円柱片、28……ねじ穴、29……貫通
穴、30……調整ねじ、31……溝、32……ピン押え板部、
33……締め付けねじ。1 to 15 show an embodiment of a bone fixing device according to the present invention. FIG. 1 is a perspective view of the entirety, FIG. 2 is a partially cutaway plan view, FIG. 4 to 6 show a block part, FIG. 4 is a left side view, FIG. 5 is a vertical sectional view, FIG. 6 is a front view, FIGS. 7 and 8 show seat members, 7 is a sectional view taken along the line VII-VII in FIG. 8, FIG. 8 is a front view, FIGS. 9 to 11 show a pin holder, and FIG.
Figure 10 is a rear view, Figure 10 is a plan view, Figure 11 is a front view,
12 and 13 show a cylindrical piece inserted into the adjustment screw insertion portion of the pin holder, FIG. 12 is a front view thereof, and FIG.
14 and 15 show a fixing member for the block member, FIG. 14 is a front view thereof, FIG. 15 is a side view, and FIG. 16 is a perspective view of a conventional example. is there. 4 bone, 5 pin, 6 rod member, 7 pin holder, 8 block member, 9 seat member, 14 screw hole, 18 pivot, 19 bracket Part, 20 ... Slot, 21
…… Adjustment screw, 23 …… Bearing part, 24 …… Pivot, 25 …… Adjustment screw insertion part, 27 …… Cylindrical piece, 28 …… Screw hole, 29 …… Through hole, 30 …… Adjustment screw, 31… … Groove, 32… Pin press plate,
33 …… Tightening screw.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 横塚 庸雄 長野県上田市大字五加629―17 (72)発明者 中沢 昭雄 長野県上田市常磐城３―11―21 (56)参考文献 特開 平２−180254（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) A61B 17/60 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasuo Yokozuka Nagata Prefecture Ueda City Oga 629-17 (72) Inventor Akio Nakazawa 3-11-21 Jobanjo, Ueda City, Nagano Prefecture (56) References 2-180254 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) A61B 17/60

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】骨の長さ方向に沿って配置されるべき一本
の棒部材にその軸心たるＸ軸上の任意位置及びＸ軸回り
の任意角度で固定可能に少なくとも二つのブロック部材
が取り付けられており、略板状の座部材が前記Ｘ軸方向
と異方向に伸びるＹ軸を軸心とする枢軸を介して前記二
つのブロック部材の夫々に枢支されると共に平滑面を介
してブロック部材に当接せしめられ、該座部材にはその
前記Ｙ軸回りでの回動角を調整するための回動角調整機
構が設けられており、前記座部材には前記骨に挿入され
るべきピンが設けられたピン保持体がＸ軸方向及びＹ軸
方向と異方向に伸びるＺ軸を軸心とした枢軸を介して枢
着され、かつ該ピン保持体には該ピン保持体のＺ軸回り
での回動角を調整する回動角調整機構が設けられている
ことを特徴とする骨の固定装置。At least two block members are fixed to one rod member to be disposed along the length direction of a bone at an arbitrary position on the X axis which is the axis thereof and at an arbitrary angle around the X axis. A substantially plate-shaped seat member is mounted, and is pivotally supported by each of the two block members via a pivot about the Y-axis extending in a direction different from the X-axis direction and via a smooth surface. The seat member is provided with a turning angle adjusting mechanism for adjusting the turning angle about the Y axis, and the seat member is inserted into the bone. A pin holder provided with a power pin is pivotally mounted via a pivot about a Z axis extending in a direction different from the X-axis direction and the Y-axis direction, and the pin holder has a Z A rotation angle adjustment mechanism for adjusting the rotation angle around the axis is provided. Of the locking device. 【請求項２】座部材の回動角調整機構は、該座部材のＹ
軸を挟んだ両側に穿設された弧状の長穴と、該長穴中に
挿入されると共にブロック部材に捩じ込まれた調整ねじ
とで構成された請求項１記載の骨の固定装置。2. A mechanism for adjusting a rotation angle of a seat member, comprising:
2. The bone fixing device according to claim 1, comprising an arc-shaped elongated hole formed on both sides of the shaft, and an adjusting screw inserted into the elongated hole and screwed into the block member. 【請求項３】ピン保持体の回動角調整機構は、該ピン保
持体のＺ軸を挟んだ両側に座部材に対して捩じ込まれた
調整ねじにより構成された請求項１記載の固定装置。3. The fixing device according to claim 1, wherein the rotation angle adjusting mechanism of the pin holder is formed by adjusting screws screwed into the seat member on both sides of the pin holder with respect to the Z axis. apparatus.
JP1233279A 1989-09-08 1989-09-08 Bone fixation device Expired - Lifetime JP2922537B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP1233279A JP2922537B2 (en) 1989-09-08 1989-09-08 Bone fixation device
US07/578,564 US5108394A (en) 1989-09-08 1990-09-06 Bone fixing device
EP90309805A EP0420430B1 (en) 1989-09-08 1990-09-07 Bone fixing device
DE69023866T DE69023866T2 (en) 1989-09-08 1990-09-07 Bone fixator.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1233279A JP2922537B2 (en) 1989-09-08 1989-09-08 Bone fixation device

Publications (2)

Publication Number Publication Date
JPH0394745A JPH0394745A (en) 1991-04-19
JP2922537B2 true JP2922537B2 (en) 1999-07-26

Family

ID=16952603

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1233279A Expired - Lifetime JP2922537B2 (en) 1989-09-08 1989-09-08 Bone fixation device

Country Status (1)

Country Link
JP (1) JP2922537B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2563333Y2 (en) * 1992-01-17 1998-02-18 長野計器株式会社 Screw pin
IT1391711B1 (en) * 2008-09-16 2012-01-27 Orthofix Srl ORTHOPEDIC DEVICE TO CORRECT LONG BONE DEFORMATIONS
JP4902626B2 (en) * 2008-11-28 2012-03-21 ジンテーズ ゲゼルシャフト ミト ベシュレンクテル ハフツング Jaw for unilateral external fixation system for trauma and orthopedics

Also Published As

Publication number Publication date
JPH0394745A (en) 1991-04-19

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