JP2604605B2 - Angle setting device for total knee arthroplasty - Google Patents
Angle setting device for total knee arthroplastyInfo
- Publication number
- JP2604605B2 JP2604605B2 JP62276735A JP27673587A JP2604605B2 JP 2604605 B2 JP2604605 B2 JP 2604605B2 JP 62276735 A JP62276735 A JP 62276735A JP 27673587 A JP27673587 A JP 27673587A JP 2604605 B2 JP2604605 B2 JP 2604605B2
- Authority
- JP
- Japan
- Prior art keywords
- pin
- guide
- alignment
- angle setting
- femur
- 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
- A61B17/14—Surgical saws ; Accessories therefor
- A61B17/15—Guides therefor
- A61B17/154—Guides therefor for preparing bone for knee prosthesis
- A61B17/155—Cutting femur
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Transplantation (AREA)
- Physical Education & Sports Medicine (AREA)
- Engineering & Computer Science (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Dentistry (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (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、リウマチ、変形性膝関節等、あるいは事故
災害により高度に変形、破壊された膝関節を人工膝関節
に置換する際に、正確かつ適切な骨切りを行うがめに用
いる人工膝関節置換用角度設定器具に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for accurately replacing a knee joint, such as rheumatism, a deformable knee joint, or the like, which has been highly deformed or destroyed due to an accident, with an artificial knee joint. The present invention also relates to an artificial knee joint replacement angle setting instrument used for performing appropriate osteotomy.
従来の人工膝関節置換用器具では骨切りに際し、第６
図（イ）（ロ）に示す大腿骨髄腔に挿入した軸に器具K1
を装着したり、または、脛骨軸より骨切り角度を決定す
る器具K2を用いて器具K1、K2にそれぞれ設けられたスリ
ットＳを通して、ボーンソーを用い病巣部の切除を行っ
ていた。With conventional knee replacement devices, the 6th
Figure (b) instrument shaft that is inserted into the femoral medullary cavity shown in (b) K 1
The lesion was cut using a bone saw through a slit S provided in each of the instruments K 1 and K 2 using the instrument K 2 for determining the osteotomy angle from the tibial axis.
ところが、従来の器具を使用していたのでは大腿骨端
面の骨切りの際、第５図に示したように膝関節、関節面
に対し垂直な軸Ｘ−Ｘ′と大腿骨Ｙ−Ｙ′とのなす角度
θ（アライメント角）を一定にした骨切りしか行うこと
ができず、またアライメントθの調整を行うとき第５図
中の大腿骨顆間部の中心Ｃを基準とした正確な骨切がで
きないので、これをもってして膝関節を置換した場合、
慴動部のすれ合いが強すぎたり、その結果摩耗が生じる
などの大きな問題点があった。However, when the conventional instrument is used, when cutting the end face of the femur, as shown in FIG. 5, the knee joint, the axis XX 'perpendicular to the joint surface and the femur YY' are used. Can be performed only when the angle θ (alignment angle) between the bones is constant, and when the alignment θ is adjusted, an accurate bone based on the center C of the intercondylar part of the femur in FIG. 5 is used. If you replace the knee joint with this,
There have been major problems such as excessive sliding of the sliding parts and wear as a result.
上記問題点を解決するべく本発明は、Ｋピンを刺入す
るためのガイド孔を一方端に備えたＫピンガイドがアラ
イメント調整盤上に回動可能に設置され、且つ上記アラ
イメント調整盤とＫピンガイドとには、共通の係止ピン
により双方を固定しＫピンガイドの回動軸に対する上記
ガイド孔の角度位置を所定位置に設定すべく複数の固定
孔が形成されてなる角度設定器具を用いる。そして、こ
の器具を用いる際には、Ｋピンガイドの回動軸を大腿骨
顆間部の中心に合わせるようにし、上記回動軸、すなわ
ち大腿骨顆間部の中心に対する上記ガイド孔の角度位置
を症例に応じたアライメントに適合させ、その位置で大
腿骨にＫピンを刺入設置する。In order to solve the above problems, the present invention provides a K pin guide having a guide hole for inserting a K pin at one end, which is rotatably installed on an alignment adjustment plate, The pin guide is an angle setting device having a plurality of fixing holes formed to fix both with a common locking pin and to set the angle position of the guide hole with respect to the rotation axis of the K pin guide at a predetermined position. Used. When using this device, the rotation axis of the K-pin guide is aligned with the center of the intercondylar part of the femur, and the angular position of the guide hole with respect to the axis of rotation, that is, the center of the intercondylar part of the femur. Is adapted to the alignment according to the case, and a K-pin is inserted into the femur at that position.
この後、前記カッターガイドや上記器具を取り外し、
上記Ｋピンを基準に専用の骨切治具を装着し、骨切り治
具に設けられたスリットＳを通してボーンソーを作用さ
せることにより症例に応じたアライメントに適合する骨
切りを実行する。After this, remove the cutter guide and the above tools,
A dedicated osteotomy is mounted on the basis of the K pin, and a bone saw is acted through a slit S provided in the osteotomy to perform osteotomy suitable for the alignment according to the case.
以下図によって本発明実施例を説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図には、本発明に係る人工膝関節置換手術用角度
設定器具を大腿骨へ装着した状態を示す。第２図は装着
した状態を真上方向から見たものを示す。FIG. 1 shows a state in which an angle setting instrument for artificial knee joint replacement surgery according to the present invention is mounted on a femur. FIG. 2 shows the mounted state as viewed from directly above.
本器具は、アライメント調整盤１と該調整盤１上に回
動可能に設置されるＫピンガイド２からなっている。This device comprises an alignment adjusting plate 1 and a K-pin guide 2 rotatably mounted on the adjusting plate 1.
このうちアライメント調整盤１は、予め大腿骨Ｆの下
端面に固定されているカッターガイド３上に固定される
もので、そのためカッターガイド３に係合させる２本の
脚1a,1aを備えるとともに、他方のカッターガイド３は
該脚1aの横側から固定用ボルト４を作用させることによ
ってアライメント調整盤１を設置できるように構成され
ている。Among them, the alignment adjusting plate 1 is fixed on a cutter guide 3 previously fixed to the lower end surface of the femur F, and therefore includes two legs 1a, 1a to be engaged with the cutter guide 3, The other cutter guide 3 is configured so that the alignment adjusting plate 1 can be installed by applying a fixing bolt 4 from the side of the leg 1a.
次に、Ｋピンガイド２にはアライメント調整盤１との
軸ボルトＢによる結合に用いられる不図示の孔があり、
この軸ボルトＢで結合された結合部分2aに対し、コ字状
の部分2bが有溝を手段としてスライド移動できるように
なっている。また、このコ字状の部分2bにはアライメン
ト調整盤１に複数個設けられた固定孔５の一つの重ね合
わせて共通の係止ピン７を嵌挿することができるように
一対の固定孔６、６が形成されている。したがって、上
記回動とコ字状の部分2bのスライドによって固定孔６の
位置をアライメント調整盤１に設けた固定孔５の任意の
一つに合わせ、その状態で係止ピン７を両固定孔5,6に
嵌挿することによって、前記回動軸に対しての他方端側
に位置するＫピン設置のためのガイド孔８を所定の角度
位置に設定することができる。Next, the K pin guide 2 has a hole (not shown) used for coupling with the alignment adjustment plate 1 by the shaft bolt B.
The U-shaped portion 2b can slide with respect to the connecting portion 2a connected by the shaft bolt B by using a groove. A pair of fixing holes 6 are inserted into the U-shaped portion 2b so that one of the fixing holes 5 provided on the alignment adjustment board 1 can be overlapped and a common locking pin 7 can be inserted. , 6 are formed. Therefore, the position of the fixing hole 6 is adjusted to any one of the fixing holes 5 provided on the alignment adjustment board 1 by the above-mentioned rotation and the sliding of the U-shaped portion 2b, and in this state, the locking pin 7 is moved to both fixing holes. By fitting into 5, 6, the guide hole 8 for installing the K pin located on the other end side with respect to the rotation shaft can be set at a predetermined angular position.
なお、アライメント調整盤１に複数の固定孔５がハ字
状に設けられ且つＫピンガイド２のコ字状部分をスライ
ド式としたのは上記角度位置をより細かなピッチで微調
整できるようにし、且つ左右両方の足でも用いることが
できるようにするためである。The plurality of fixing holes 5 are provided in the alignment adjusting plate 1 in a C-shape, and the U-shaped portion of the K-pin guide 2 is slidable so that the angular position can be finely adjusted at a finer pitch. , And so that both left and right feet can be used.
このように本器具は、Ｋピンガイド２の回動軸2c（軸
ボルトＢの中心軸）に対するガイド孔８の角度位置を微
調整でき、したがってＫピンガイド２の回動軸2cを大腿
骨顆間部の中心Ｃ（第５図参照）に合わせることによ
り、術前にレントゲン計測し、作図によって求めた個々
の症例のアライメントθに対応した上記ガイド孔８の位
置設定ができる。そして、このためには本器具を固定す
るカッターガイド３を設置する場合に、後で装着するＫ
ピンガイド２の回動軸2cと顆間部の中心Ｃが合致するよ
うに充分注意を払って設置することも重要である。As described above, the present device can finely adjust the angular position of the guide hole 8 with respect to the rotation axis 2c of the K pin guide 2 (the center axis of the shaft bolt B). By adjusting to the center C of the intervening portion (see FIG. 5), the position of the guide hole 8 can be set in correspondence with the alignment θ of each case determined by drawing before the operation and drawing. For this purpose, when installing the cutter guide 3 for fixing the device, the K which will be attached later will be described.
It is also important to place the pin guide 2 with sufficient care so that the rotation axis 2c of the pin guide 2 and the center C of the intercondylar portion match.
次に、前述のようにアライメントθに対応して位置設
定されたガイド孔８を介してＫピン10を骨に刺入し、こ
のピンに基づき骨切りを行うための骨切り治具11を装着
し、その治具11に設けられたスリットＳに従ってボーン
ソーを用い骨切りを行う。このように骨切り治具11を用
いて骨切りを行った大腿骨ｆを第５図に示し、しかる
後、不図示の人工膝関節を正確な位置に装着することが
できる。Next, the K-pin 10 is inserted into the bone through the guide hole 8 set in accordance with the alignment θ as described above, and the osteotomy jig 11 for osteotomy based on this pin is mounted. Then, the bone is cut using a bone saw according to the slit S provided in the jig 11. FIG. 5 shows the femur f in which the osteotomy has been performed using the osteotomy tool 11, and thereafter, an artificial knee joint (not shown) can be mounted at an accurate position.
叙上のように、症例に応じたアライメントに基づき骨
切りを行うことによって、正確な大腿骨コンポーネント
の設置が可能となり長期間にわがり関節面における慴動
も良好となり違和感もないなど人類の福祉に貢献すると
ころ大である。As described above, by performing osteotomy based on the alignment according to the case, it is possible to accurately install the femoral component, and for a long period of time, the sliding on the joint surface is good and there is no discomfort and human welfare It is a great place to contribute to.
第１図、第２図はそれぞれ本発明による人工膝関節置換
術用角度設定器具を大腿骨に装着した状態の斜視図及び
平面図である。 第３図は本発明に係る器具を用い大腿骨下端面の骨切り
を説明するための図である。第４図は下端面を骨切りさ
れた大腿骨の斜視図であり、第５図は大腿骨のアライメ
ントを説明するための図である。第６図（イ）（ロ）は
ともに従来の大腿骨下面の骨切り装置とそれを用いた骨
切り手順を説明するための斜視図である。 F:大腿骨 K1,K2:従来の器具 S:スリット B:軸ボルト θ：アライメント C:大腿骨顆間部の中心 1:アライメント調整盤 1a:脚 2:Kピンガイド 2a:結合部分 2b:コ字状部分 2c:回動軸 3:カッターガイド 4:固定用ボルト 5,6:固定孔 7:係止ピン 8:ガイド孔 10:Kピン 11:骨切り治具1 and 2 are a perspective view and a plan view, respectively, showing a state in which the angle setting device for artificial knee joint replacement according to the present invention is mounted on a femur. FIG. 3 is a view for explaining osteotomy of the lower end face of the femur using the instrument according to the present invention. FIG. 4 is a perspective view of a femur whose lower end face is cut, and FIG. 5 is a view for explaining alignment of the femur. FIGS. 6 (a) and 6 (b) are perspective views for explaining a conventional femoral lower surface osteotomy device and an osteotomy procedure using the same. F: Femur K 1 , K 2 : Conventional instrument S: Slit B: Shaft bolt θ: Alignment C: Center of femoral condyle 1: Alignment adjustment board 1a: Leg 2: K pin guide 2a: Joint 2b : U-shaped part 2c: Rotating shaft 3: Cutter guide 4: Fixing bolt 5,6: Fixing hole 7: Locking pin 8: Guide hole 10: K pin 11: Bone cutting jig
Claims (1)
に備えたＫピンガイドがアライメント調整盤上に回動可
能に設置され、且つ上記アライメント調整盤とＫピンガ
イドとには、共通の係止ピンにより双方を固定しＫピン
ガイドの回動軸に対する上記ガイド孔の角度位置を所定
位置に設定すべく複数の固定孔が形成されてなる人工膝
関節置換術用角度設定器具。A K-pin guide having a guide hole for inserting a K-pin at one end is rotatably installed on an alignment adjustment plate, and the alignment adjustment plate and the K-pin guide have: An angle setting device for artificial knee joint replacement in which a plurality of fixing holes are formed to fix both of them by a common locking pin and to set an angular position of the guide hole with respect to a rotation axis of a K-pin guide at a predetermined position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62276735A JP2604605B2 (en) | 1987-10-30 | 1987-10-30 | Angle setting device for total knee arthroplasty |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62276735A JP2604605B2 (en) | 1987-10-30 | 1987-10-30 | Angle setting device for total knee arthroplasty |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01119244A JPH01119244A (en) | 1989-05-11 |
| JP2604605B2 true JP2604605B2 (en) | 1997-04-30 |
Family
ID=17573612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62276735A Expired - Fee Related JP2604605B2 (en) | 1987-10-30 | 1987-10-30 | Angle setting device for total knee arthroplasty |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2604605B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6695848B2 (en) | 1994-09-02 | 2004-02-24 | Hudson Surgical Design, Inc. | Methods for femoral and tibial resection |
| JP3037200B2 (en) * | 1997-05-23 | 2000-04-24 | 埼玉日本電気株式会社 | Mobile phone apparatus and method for controlling incoming call response |
| KR100399489B1 (en) * | 2000-02-10 | 2003-09-29 | 김종범 | Femorotibial Resector Linker For Knee Arthroplasty |
| US8062377B2 (en) | 2001-03-05 | 2011-11-22 | Hudson Surgical Design, Inc. | Methods and apparatus for knee arthroplasty |
| JP2004008708A (en) * | 2002-06-11 | 2004-01-15 | Osaka Industrial Promotion Organization | Support tool and support tool set for supporting artificial knee joint replacement |
| US20060030855A1 (en) | 2004-03-08 | 2006-02-09 | Haines Timothy G | Methods and apparatus for improved profile based resection |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5698113A (en) * | 1979-12-29 | 1981-08-07 | Matsushita Electric Works Ltd | Manufacture of veneer |
-
1987
- 1987-10-30 JP JP62276735A patent/JP2604605B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01119244A (en) | 1989-05-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |