JP5389549B2 - Bone extractor - Google Patents
Bone extractor Download PDFInfo
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- JP5389549B2 JP5389549B2 JP2009159284A JP2009159284A JP5389549B2 JP 5389549 B2 JP5389549 B2 JP 5389549B2 JP 2009159284 A JP2009159284 A JP 2009159284A JP 2009159284 A JP2009159284 A JP 2009159284A JP 5389549 B2 JP5389549 B2 JP 5389549B2
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- patella
- bone
- tendon
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Description
本発明は骨付き膝蓋腱の膝蓋骨側の骨の近位端を切り取るための器械に関するものである。 The present invention relates to an instrument for cutting a proximal end of a bone on the patella side of a patella tendon with bone.
前十字靱帯断裂はスポーツ選手によくある損傷である。この損傷の治療は手術を要する。手術法としては、靭帯の移植術が主である。いろいろな腱を用いるが、そのなかでも骨付き膝蓋腱の移植が広く行われている。骨付き膝蓋腱とは、膝蓋腱を膝蓋骨の一部と脛骨の一部を付けて同時に採取したものである（図１）。骨付き膝蓋腱を採取するためには、まず膝蓋腱の中央三分の一（１）を正確に切開する必要がある。つぎに脛骨側の骨（２）を、通常の骨鋸を用いて、幅は膝蓋腱の幅、長さは約２ｃｍ骨切り、骨を遊離させる。次に膝蓋骨（３）を、トレフィンドリルを用いて、骨付き膝蓋腱の近位端以外を切る（図２）。最後に骨付き膝蓋腱の膝蓋骨側の近位端を通常の骨鋸を用いて切り（図３）、骨付き膝蓋腱を採取する。 Anterior cruciate ligament rupture is a common injury to athletes. Treatment of this injury requires surgery. The main surgical procedure is ligament transplantation. Various tendons are used. Among them, patella tendons with bones are widely transplanted. The patella tendon with bone is a patella tendon obtained by attaching a part of the patella and a part of the tibia simultaneously (FIG. 1). In order to collect a patella tendon with a bone, it is first necessary to accurately incise the central third (1) of the patella tendon. Next, the bone (2) on the tibia side is cut using a normal bone saw, the width is the width of the patella tendon, the length is about 2 cm, and the bone is released. Next, the patella (3) is cut using the trephine drill except for the proximal end of the patella tendon with bone (FIG. 2). Finally, the proximal end on the patella side of the patella tendon with bone is cut using a normal bone saw (FIG. 3), and the patella tendon with bone is collected.
前記の方法では、次の問題点があった。トレフィンドリル（９）を用いて、膝蓋骨側の骨切りをした時、その断面は蒲鉾型になる（図４）。それに反して、骨付き膝蓋腱の近位端（８）を通常の骨鋸（１０）を用いて骨切り際に、蒲鉾型に骨切りをするのは不可能で、骨切りの範囲（１２）が必要以上に大きくなる（図５）。そのため膝蓋骨の強度が低下し、少ない外力で膝蓋骨の横骨折（１３）をおこすことがよくあった（図６）。また、膝蓋骨直上の皮膚を切開する必要があった。 The above method has the following problems. When a trephine drill (9) is used to cut the patella, the cross section becomes saddle-shaped (FIG. 4). On the other hand, it is impossible to cut the proximal end (8) of the patella tendon with bone using a normal bone saw (10) in a saddle shape, and the range of osteotomy (12 ) Becomes larger than necessary (FIG. 5). For this reason, the strength of the patella is reduced, and a lateral fracture (13) of the patella is often caused with a small external force (FIG. 6). In addition, it was necessary to incise the skin just above the patella.
上記問題点を解決するため、本発明に係る骨採取機は、In order to solve the above problems, the bone extractor according to the present invention is:
円筒状の体部と、A cylindrical body,
前記体部の一端に設けられ、軸に垂直な断面は蒲鉾型で、採取する予定の膝蓋骨の長さと同じ軸方向長さを有する先端部と、A tip provided at one end of the body part, the cross section perpendicular to the axis is saddle-shaped, and a tip having the same axial length as the length of the patella to be collected;
前記体部の他端に設けられ、前記体部を回転させることができる取っ手を含む尾部と、A tail portion provided at the other end of the body portion and including a handle capable of rotating the body portion;
を備えた。Equipped with.
本発明は、前記に説明したように構成されているので、以下の効果がある。
骨を捻じって切るので、膝蓋骨を必要以上に切ることはない。そのため膝蓋骨の強度の低下を招くことがなく、その結果横骨折を起こすことは少ない。Since the present invention is configured as described above, the following effects can be obtained.
Since the bone is twisted and cut, the patella is not cut more than necessary. Therefore, the strength of the patella is not lowered, and as a result, there is little possibility of causing a lateral fracture.
以下、本発明の実施の形態について説明する。
（イ）体部は円柱状であり、内径と外径はトレフィンドリルと同じであり、尾部にはＶ字型の取っ手（１５）を付け、円筒を把持し回転しやすくしている（図７）。
（ロ）先端（１４）の長さは、採取する膝蓋骨の長さであり、断面は蒲鉾型である（図８）。Embodiments of the present invention will be described below.
(A) The body part is cylindrical, the inner diameter and the outer diameter are the same as those of the trephine drill, and a V-shaped handle (15) is attached to the tail part to grip and rotate the cylinder (see FIG. 7).
(B) The length of the tip (14) is the length of the patella to be collected, and the cross section is saddle-shaped (FIG. 8).
本発明は以上のような構成で、これらを使用するのは以下のように行う。
まず膝蓋腱（１）を正確に切開する。つぎに脛骨側の骨を通常の骨鋸を用いて、骨を膝蓋腱の幅、長さは約２ｃｍに切り脛骨（２）を遊離させる。次に膝蓋骨の一部（３）を、トレフィンドリルを用いて、骨付き膝蓋腱の膝蓋骨の近位端（８）以外を切る（図２）。そして、遊離した脛骨と膝蓋腱を前記の本発明の骨採取機の中に入れ、それを押し進める。骨採取機の先端（１４）の断面（図８）はトレフィンドリルで膝蓋骨を切った断面と一致している（図４）。そのため、トレフィンドリルで骨切りした膝蓋骨に本発明の骨採取機を挿入することができ、骨付き膝蓋腱の近位端（８）まで骨採取機を推し進めることが可能である（図９）。骨切りした膝蓋骨の断面と、本発明の骨採取機（１４）の先端部の断面は同じ寸法の蒲鉾型であるので、尾部の取っ手（１５）を把持し本発明の先端（１４）を回転させた際、膝蓋骨の骨片が空転することなく、骨を捻じり切ることが可能である（図１０）。以上の操作は、皮下より行うので、膝蓋骨直上の皮膚切開を必要としない。The present invention is configured as described above, and these are used as follows.
First, the patella tendon (1) is accurately incised. Next, the bone on the tibia side is cut to about 2 cm in width and length of the patella tendon using a normal bone saw, and the tibia (2) is released. Next, a part of the patella (3) is cut with a trephine drill except for the proximal end (8) of the patella of the patella tendon with bone (FIG. 2). Then, the released tibia and patella tendon are placed in the bone extractor of the present invention and pushed forward. The cross-section (FIG. 8) of the tip (14) of the bone extractor coincides with the cross-section of the patella cut with a trephine drill (FIG. 4). Therefore, the bone extractor of the present invention can be inserted into the patella cut by a trephine drill, and the bone extractor can be pushed forward to the proximal end (8) of the patella tendon with bone (FIG. 9). . Since the cross-section of the cut patella and the cross-section of the tip of the bone extractor (14) of the present invention have the same dimensions, the handle (15) of the tail is grasped and the tip (14) of the present invention is rotated. When this is done, the bone pieces of the patella can be twisted without slipping (FIG. 10). Since the above operation is performed subcutaneously, a skin incision just above the patella is not required.
１ 膝蓋腱の中央三分の一
２ 脛骨の一部
３ 膝蓋骨の一部
４ 大腿骨
５ 脛骨
６ 腓骨
７ 膝蓋骨
９ トレフィンドリル
１０ 通常の骨鋸
１１ トレフィンドリルの骨切り線
１２ 通常の骨鋸の骨切線
１３ 膝蓋骨の横骨折線
１４ 本発明の先端
１５ 本発明の取っ手1 Central third of
Claims (1)
前記体部の一端に設けられ、軸に垂直な断面は蒲鉾型で、採取する予定の膝蓋骨の長さと同じ軸方向長さを有する先端部と、A tip provided at one end of the body part, the cross section perpendicular to the axis is saddle-shaped, and a tip having the same axial length as the length of the patella to be collected;
前記体部の他端に設けられ、前記体部を回転させることができる取っ手を含む尾部と、A tail portion provided at the other end of the body portion and including a handle capable of rotating the body portion;
を備えた骨採取機。Bone harvesting machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009159284A JP5389549B2 (en) | 2009-06-12 | 2009-06-12 | Bone extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009159284A JP5389549B2 (en) | 2009-06-12 | 2009-06-12 | Bone extractor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2010284480A JP2010284480A (en) | 2010-12-24 |
| JP5389549B2 true JP5389549B2 (en) | 2014-01-15 |
Family
ID=43540648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009159284A Expired - Fee Related JP5389549B2 (en) | 2009-06-12 | 2009-06-12 | Bone extractor |
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| Country | Link |
|---|---|
| JP (1) | JP5389549B2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2920167B1 (en) * | 1998-06-10 | 1999-07-19 | 英卓 高 | Medical bone plug cutter |
| US6497726B1 (en) * | 2000-01-11 | 2002-12-24 | Regeneration Technologies, Inc. | Materials and methods for improved bone tendon bone transplantation |
| JP5306900B2 (en) * | 2009-05-19 | 2013-10-02 | メイラ株式会社 | Transplanted tendon anchor with bone fragment for ligament reconstruction |
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2009
- 2009-06-12 JP JP2009159284A patent/JP5389549B2/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| JP2010284480A (en) | 2010-12-24 |
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