【発明の詳細な説明】 ［産業上の利用分野］本発明は、医療分野、整形外科の
手術のときに用いるものである。特に、大腿骨における
人工骨頭置換術後の人工骨頭下骨折に対して用いる。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention is used in the medical field and orthopedic surgery. Especially, it is used for artificial subcapsular fracture after artificial head replacement in the femur.
［従来の技術］人工骨頭のステムの下での大腿骨骨折に
対する早期荷重を可能にするよい固定器具はなかった。
保存的治療での早期荷重は不可能であった。プレート
や、創外固定は、人工骨頭が邪魔をして十分な固定力を
得らず骨癒合にも不利である。腫瘍切除後に主に用いら
れる、再建用の人工骨頭は、大腿骨のカーブにあわない
ため使えない。ロングステムの人工骨頭では、骨折線が
下方に及ぶと目的を達せられなかったし、特に、大腿骨
の変形の強いものでは、大腿骨のカーブと合わないこと
も多く挿入に無理することがあり、使いずらかった。こ
の欠点により、特に老人がこのけがを負ったとき、長期
安静を強いられることは、歩行能力の著しい低下をもた
らしていた。PRIOR ART There have been no good fixation devices that allow early loading for femoral fractures under the stem of artificial heads.
Early loading with conservative treatment was not possible. The plate and external fixation are also disadvantageous in bone fusion because the artificial head interferes and does not obtain sufficient fixation force. The artificial head for reconstruction, which is mainly used after tumor resection, cannot be used because it does not fit the curve of the femur. With a long-stem artificial head, the purpose could not be achieved if the fracture line extended downward, and especially with a femoral bone with a strong deformity, it may not be possible to insert it because it does not match the curve of the femur. , It was hard to use. Due to this drawback, forced long-term rest, especially when the elderly were injured, caused a marked decline in walking ability.
［本考案が解決しようとする問題］大腿骨骨折における
髄内釘と同等の固定力および骨癒合力を持つ、早期荷重
可能な内固定器具を作ることである。[Problems to be solved by the present invention] To produce an internal fixation device capable of early loading, which has a fixation force and a bone fusion force equivalent to those of an intramedullary nail in a femoral fracture.
［課題を解決するための手段］大腿骨幹部骨折用の髄内
釘が早期荷重可能であ利点を用い、骨折部の固定を行な
い、それに挿入できる人工骨頭を用いて早期荷重を可能
にする。人工骨頭は、早期荷重可能である。人工骨頭と
髄内釘の間の固定力が問題となるが髄内釘内に十分長く
挿入する事によりその問題を解決する。このとき、挿入
部にかかる力で髄内釘上部が変形するとルースニングが
起こりやすいため、上部が、変形しないようにすること
でその問題を解決する。[Means for Solving the Problems] With the advantage that an intramedullary nail for femoral shaft fracture can be loaded early, the fracture can be fixed and an artificial head that can be inserted into it can be used for early loading. The artificial head can be loaded early. Fixing force between the artificial bone head and the intramedullary nail becomes a problem, but the problem is solved by inserting the nail in the intramedullary nail long enough. At this time, if the upper portion of the intramedullary nail is deformed by the force applied to the insertion portion, loosening is likely to occur, so that the problem is solved by preventing the upper portion from being deformed.
［作用］この内固定器具を用いる事により人工骨頭下骨
折に対する固定力および骨癒合力は、一般の大腿骨骨折
に用いた髄内釘と同等であり、荷重機能を合わせ持つた
め、早期荷重が可能となる。[Operation] By using this internal fixation device, the fixation force and bone union force for artificial subcapital fractures are equivalent to those of intramedullary nails used for general femoral fractures, and since they have a load function, early loading is possible. It will be possible.
［実施例］実施例について図面を参照にして説明する。
第１図において本器具の組み合わせは、髄内釘１、人工
骨頭接続部２、人工骨頭骨頭部３より成る。髄内釘１
は、切れ込み４があり、人工骨頭接続部２の頚部５が入
るようになっている。切れ込み４はなくても良い。髄内
釘１自体の切れ込み６は髄内釘１の上部にはないため髄
内釘の上部は広がることはない。第２図において本器具
は図のように組み合わせて使用する。すなわち、髄内釘
１に、人工骨頭接続部２を挿入し、それに人工骨頭骨頭
部３を取り付ける。第３図において骨折７に、本固定具
を用いた固定を示す。第４図は、髄内釘１の上部が開か
ないように、外側に、髄内釘１の固定物８を付けたもの
である。これは、差し込み式でもねじ込み式でもよい。
第５図は、骨折７が大腿骨幹部中１／３より遠位での例
である。髄内定１には穴９、１０が開けられており、そ
こにスクリュー１１、１２を通すことで、この骨折にも
対応できるし、回旋防止になる。穴９、１０は複数あっ
ても良い。穴１３が、人工骨頭接続部２に開けられてい
れば、穴９と共通のスクリューを通すことで、回旋防止
になる。第６図のように、髄内釘１の上部を厚くするこ
とで、人工骨頭接続部２から受ける力に対応しても良
い。[Embodiment] An embodiment will be described with reference to the drawings.
In FIG. 1, the combination of the present device comprises an intramedullary nail 1, an artificial head connecting portion 2, and an artificial head head 3. Intramedullary nail 1
Has a notch 4 so that the neck portion 5 of the artificial bone head connecting portion 2 can be inserted. The notch 4 is not necessary. Since the notch 6 of the intramedullary nail 1 itself does not exist in the upper portion of the intramedullary nail 1, the upper portion of the intramedullary nail does not spread. In Fig. 2, this device is used in combination as shown. That is, the artificial bone head connecting portion 2 is inserted into the intramedullary nail 1, and the artificial bone head 3 is attached thereto. In FIG. 3, the fracture 7 is shown to be fixed using the present fixing tool. FIG. 4 shows a fixed object 8 of the intramedullary nail 1 attached to the outside so that the upper portion of the intramedullary nail 1 does not open. It may be pluggable or screwable.
FIG. 5 shows an example in which the fracture 7 is distal to 1/3 of the femoral shaft. Holes 9 and 10 are opened in the intramedullary implant 1, and screws 11 and 12 can be passed through the holes to prevent this bone fracture and prevent rotation. There may be a plurality of holes 9, 10. If the hole 13 is formed in the artificial head connecting portion 2, the screw common to the hole 9 is passed to prevent rotation. As shown in FIG. 6, the force received from the artificial bone head connecting part 2 may be dealt with by thickening the upper part of the intramedullary nail 1.
［発明の効果］人工骨頭下での骨折に対し本器具を用い
ることにより従来のものより早期荷重を行なうことがで
き骨折の固定力、癒合力も、従来の大腿骨折用の髄内釘
と同等になる。[Effects of the Invention] By using this device for fractures under the artificial bone head, an earlier load can be applied as compared with the conventional one, and the fixing force and the fusion force of the fracture are equal to those of the conventional intramedullary nail for femoral fracture. Become.
第１図は、本器具の構成の斜視図である。第２図は、本
器具を組み合わせたものの斜視図である。第３図は、本
器具を用いた手術の模式図である。第４図は、髄内定１
の上部が開かないように、固定物８を持ちいた模式図で
ある。第５図は、本器具に、固定および、回旋防止のた
めの穴をあけたものを用いた固定を示す模式図である。
第６図は、髄内釘１の上部の実施例を示す斜視図であ
る。 １、髄内釘、２、人工骨頭接続部、３、人工骨頭骨頭
部、４、切れ込み、５、頚部、６、切れ込み、７、骨
折、８、固定物、９、穴、１０、穴、１１、スクリュ
ー、１２スクリュー、１３、穴FIG. 1 is a perspective view of the configuration of the device. FIG. 2 is a perspective view of a combination of this device. FIG. 3 is a schematic diagram of surgery using this device. Fig. 4 shows intramedullary fixation 1
It is a schematic diagram which has the fixed object 8 so that the upper part of may not be opened. FIG. 5 is a schematic view showing the fixing and fixing using a device having holes for preventing rotation of the device.
FIG. 6 is a perspective view showing an embodiment of the upper part of the intramedullary nail 1. 1, intramedullary nail 2, artificial head connection part 3, artificial head bone head 4, incision 5, neck, 6, incision 7, fracture, 8, fixed object, 9, hole 10, hole, 11 , Screw, 12 screw, 13, hole
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5355271AJPH07194613A (en) | 1993-12-28 | 1993-12-28 | Nail inside marrow for thighbone fracture with loading mechanism |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5355271AJPH07194613A (en) | 1993-12-28 | 1993-12-28 | Nail inside marrow for thighbone fracture with loading mechanism |
| Publication Number | Publication Date |
|---|---|
| JPH07194613Atrue JPH07194613A (en) | 1995-08-01 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5355271APendingJPH07194613A (en) | 1993-12-28 | 1993-12-28 | Nail inside marrow for thighbone fracture with loading mechanism |
| Country | Link |
|---|---|
| JP (1) | JPH07194613A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015217264A (en)* | 2014-05-21 | 2015-12-07 | ディトマール・ヴォルター | Osteosynthesis system for multidirectional, angular-stable treatment of fracture of tubular bone comprising intramedullary nail and bone screw |
| CN108553156A (en)* | 2018-06-26 | 2018-09-21 | 海南省万宁市人民医院 | Double combination circular resilient intramedullary nails |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015217264A (en)* | 2014-05-21 | 2015-12-07 | ディトマール・ヴォルター | Osteosynthesis system for multidirectional, angular-stable treatment of fracture of tubular bone comprising intramedullary nail and bone screw |
| CN108553156A (en)* | 2018-06-26 | 2018-09-21 | 海南省万宁市人民医院 | Double combination circular resilient intramedullary nails |
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