JP2008018041A - Positioning device of intramedullary nail - Google Patents

Positioning device of intramedullary nail Download PDF

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JP2008018041A
JP2008018041A JP2006192478A JP2006192478A JP2008018041A JP 2008018041 A JP2008018041 A JP 2008018041A JP 2006192478 A JP2006192478 A JP 2006192478A JP 2006192478 A JP2006192478 A JP 2006192478A JP 2008018041 A JP2008018041 A JP 2008018041A
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intramedullary nail
positioning device
holding body
positioning
guide
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JP4512902B2 (en
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Naomi Inoue
尚美 井上
Hideyuki Miyajima
秀之 宮島
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Kobayashi Pharmaceutical Co Ltd
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Kobayashi Pharmaceutical Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a positioning device of intramedullary nails capable of facilitating easy operation for positioning intramedullary nails. <P>SOLUTION: The positioning device 1 of an intramedullary nail 40 inserted into a medullary cavity of a long tubular bone L, has a mounting part 10 fitted with a base end 40a of the intramedullary nail 40 and a supporting part 20 bonded to the mounting part 10, and a guide part 24 is formed at the supporting part 20 for guiding the device toward the intramedullary nail 40. This device is characterized in that the device has a holder 30 mounted to be relatively movable along the longitudinal direction of the intramedullary nail 40 toward the mounting part 10, and a means for fixing the holder 30 to the mounting part 10 while the holder 30 is directly attached to the long tubular bone L. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、上腕骨、大腿骨、脛骨などの長管骨の髄腔に挿入される髄内釘の位置決めを行うための髄内釘位置決め装置に関する。   The present invention relates to an intramedullary nail positioning device for positioning an intramedullary nail inserted into a medullary cavity of a long bone such as a humerus, a femur, and a tibia.

髄内釘位置決め装置の一例として、例えば、特許文献１に開示された構成が知られている。図６に示すように、位置決め装置５０は、髄内釘６０の基端部に連結される連結アーム部５１と、連結アーム部５１に接続されて髄内釘６０と平行に延びる位置決め部５２とを備えており、連結アーム部５１の上部には、連結アーム部５１の軸線に沿ってガイドワイヤ５３を案内する案内孔５１ａが形成されている。   As an example of the intramedullary nail positioning device, for example, a configuration disclosed in Patent Document 1 is known. As shown in FIG. 6, the positioning device 50 includes a connecting arm portion 51 connected to the proximal end portion of the intramedullary nail 60, and a positioning portion 52 connected to the connecting arm portion 51 and extending in parallel with the intramedullary nail 60. A guide hole 51 a for guiding the guide wire 53 along the axis of the connection arm portion 51 is formed in the upper portion of the connection arm portion 51.

この位置決め装置５０によれば、図６に示すように、ガイドワイヤ５３の先端部５３ａが骨頭７０の中心位置を指し示す状態で、位置決め部５２の案内孔（図示せず）を介して髄内釘６０の傾斜孔６１にガイドピン５４を挿入することにより、髄内釘６０の位置決めを行うことができる。
特開２００１−２８６４８０号公報 According to this positioning device 50, as shown in FIG. 6, the intramedullary nail is guided through the guide hole (not shown) of the positioning portion 52 in a state where the distal end portion 53 a of the guide wire 53 points to the center position of the bone head 70. By inserting the guide pin 54 into the 60 inclined holes 61, the intramedullary nail 60 can be positioned.
JP 2001-286480 A

上述した従来の位置決め装置５０は、ガイドワイヤ５３の照準を確認することで、髄内への髄内釘６０の打ち込み深さを調整することが可能であるが、調整した髄内釘６０の打ち込み深さが施術中に変化して、位置ずれを生じるおそれがあった。特に上腕骨に髄内釘６０を挿入する場合には、髄内釘６０が自重によって髄内に深く入り込み易いため、施術中に髄内釘６０の位置の確認や調整を頻繁に行う必要があるという問題があった。   The above-described conventional positioning device 50 can adjust the driving depth of the intramedullary nail 60 into the medulla by checking the aim of the guide wire 53. There was a risk that the depth would change during the procedure, resulting in misalignment. In particular, when the intramedullary nail 60 is inserted into the humerus, the intramedullary nail 60 tends to penetrate deeply into the medulla due to its own weight, and therefore it is necessary to frequently check and adjust the position of the intramedullary nail 60 during the treatment. There was a problem.

そこで、本発明は、髄内釘の位置決め作業を容易にすることができる髄内釘位置決め装置の提供を目的とする。   Therefore, an object of the present invention is to provide an intramedullary nail positioning device that can facilitate positioning of the intramedullary nail.

本発明の前記目的は、長管骨の髄腔に挿入される髄内釘の位置決めを行うための髄内釘位置決め装置であって、髄内釘の基端部が取り付けられる装着部と、前記装着部に結合される支持部とを備え、髄内釘に向けて器具を案内する案内部が前記支持部に形成されており、前記装着部に対して髄内釘の長手方向に沿って相対移動可能に設けられた保持体と、該保持体を長管骨と当接した状態で前記装着部に固定する固定手段とを備えることを特徴とする髄内釘位置決め装置により達成される。   The object of the present invention is an intramedullary nail positioning device for positioning an intramedullary nail to be inserted into the medullary cavity of a long bone, comprising: a mounting portion to which a proximal end portion of the intramedullary nail is attached; A guide portion for guiding the instrument toward the intramedullary nail is formed on the support portion, and relative to the mounting portion along the longitudinal direction of the intramedullary nail. It is achieved by an intramedullary nail positioning device comprising: a holding body provided so as to be movable; and a fixing means for fixing the holding body to the mounting portion in a state of being in contact with a long bone.

この髄内釘位置決め装置において、保持体は、髄内釘の長手方向に突出する突起部を備えることにより、前記突起部の先端が長管骨と当接するように構成されていることが好ましい。この場合、前記保持体は、前記装着部に対して回転可能に設けられていることがより好ましい。   In this intramedullary nail positioning device, it is preferable that the holding body includes a protrusion protruding in the longitudinal direction of the intramedullary nail so that the tip of the protrusion contacts the long bone. In this case, it is more preferable that the holding body is provided so as to be rotatable with respect to the mounting portion.

また、上述した各髄内釘位置決め装置において、前記装着部は、前記支持部に固定された中空筒状のガイド体と、前記ガイド体に挿入され髄内釘の基端部と螺合するボルト部材とを備え、前記ガイド体には、長手方向に沿って複数の位置決め部が形成された構成にすることができ、前記固定手段は、前記位置決め部に対して係脱自在となるように前記保持体に設けられた係止部を備えることができる。   Further, in each of the intramedullary nail positioning devices described above, the mounting portion includes a hollow cylindrical guide body fixed to the support portion, and a bolt inserted into the guide body and screwed into a proximal end portion of the intramedullary nail. A plurality of positioning portions are formed along a longitudinal direction of the guide body, and the fixing means is detachable from the positioning portion. A locking portion provided on the holding body can be provided.

本発明の髄内釘位置決め装置によれば、髄内釘の位置決め作業を容易にすることができる。   According to the intramedullary nail positioning device of the present invention, the positioning operation of the intramedullary nail can be facilitated.

以下、本発明の実態形態について添付図面を参照して説明する。図１は、本発明の一実施形態に係る髄内釘位置決め装置の側面図である。図１に示すように、髄内釘位置決め装置１は、髄内釘４０が取り付けられる装着部１０と、この装着部１０に結合される支持部２０とを備えており、装着部１０には、長管骨Ｌの髄腔に対する髄内釘４０の挿入深さを保持するための保持体３０が設けられている。   Hereinafter, actual forms of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a side view of an intramedullary nail positioning device according to an embodiment of the present invention. As shown in FIG. 1, the intramedullary nail positioning device 1 includes a mounting portion 10 to which the intramedullary nail 40 is attached, and a support portion 20 coupled to the mounting portion 10. A holding body 30 for holding the insertion depth of the intramedullary nail 40 into the medullary cavity of the long bone B is provided.

装着部１０は、中空円筒状のガイド体１１と、このガイド体１１の上端側から挿入されるボルト部材１２とを備えており、髄内釘４０の基端部４０ａの端面をガイド体１１の下端面に当接させた状態で、ボルト部材１２をガイド体１１に挿入し、髄内釘４０の基端部４０ａの内周面と螺合させることにより、髄内釘４０が装着部１０に取り付けられる。ボルト部材１２は、中空に形成されており、ガイドワイヤ（図示せず）を挿通可能とされている。   The mounting portion 10 includes a hollow cylindrical guide body 11 and a bolt member 12 inserted from the upper end side of the guide body 11, and the end surface of the proximal end portion 40 a of the intramedullary nail 40 is attached to the guide body 11. With the bolt member 12 inserted into the guide body 11 in contact with the lower end surface and screwed with the inner peripheral surface of the proximal end portion 40a of the intramedullary nail 40, the intramedullary nail 40 is attached to the mounting portion 10. It is attached. The bolt member 12 is formed in a hollow shape so that a guide wire (not shown) can be inserted therethrough.

支持部２０は、ガイド体１１の上部に結合されたアーム部材２１と、このアーム部材２１に連結ボルト２２を介して結合されたターゲット部材２３とを備えている。ターゲット部材２３は、装着部１０に取り付けられた髄内釘４０の長手方向と略平行に延びる樹脂製の板状部材であり、複数の案内部２４を有している。案内部２４は、プローブ、ドリル、ドライバーなどの手術器具などを挿通可能な貫通孔からなり、これらの器具を髄内釘４０に向けて案内する。   The support unit 20 includes an arm member 21 coupled to the upper portion of the guide body 11 and a target member 23 coupled to the arm member 21 via a connection bolt 22. The target member 23 is a resin-made plate-like member that extends substantially parallel to the longitudinal direction of the intramedullary nail 40 attached to the mounting portion 10, and has a plurality of guide portions 24. The guide unit 24 is formed of a through-hole through which a surgical instrument such as a probe, a drill, or a driver can be inserted, and guides these instruments toward the intramedullary nail 40.

図２は、アーム部材２１に結合されたガイド体１１の断面図である。図２に示すように、ガイド体１１は、外面全周に形成された溝部からなる位置決め部１１ａを複数有しており、各位置決め部１１ａは、ガイド体１１の長手方向に沿って等間隔に設けられている。   FIG. 2 is a cross-sectional view of the guide body 11 coupled to the arm member 21. As shown in FIG. 2, the guide body 11 has a plurality of positioning portions 11 a made up of groove portions formed on the entire outer surface, and each positioning portion 11 a is equidistant along the longitudinal direction of the guide body 11. Is provided.

保持体３０は、図３に断面図で示すように、ガイド体１１が挿通される筒状の本体３１を備えており、本体３１の側面には開口部３１ａが形成されている。開口部３１ａには、ガイド体１１の挿通方向と直交する方向に進退可能となるようにボタン部材３２が挿入されている。   As shown in a sectional view in FIG. 3, the holding body 30 includes a cylindrical main body 31 through which the guide body 11 is inserted, and an opening 31 a is formed on a side surface of the main body 31. A button member 32 is inserted into the opening 31 a so as to be able to advance and retract in a direction orthogonal to the insertion direction of the guide body 11.

ボタン部材３２は、図３及び図４に示すように、ガイド体１１が挿通される上面視矩形状の窓部３２ａを有しており、窓部３２ａの内周面には、ガイド体１１の位置決め部１１ａ（図２参照）と係合可能な長片状の係止部３２ｂを備えている。ボタン部材３２は、本体３１の内部に配置されたばね材３３により、押圧部３２ｃが開口部３１ａを介して外部に露出するように付勢されており、この状態で係止部３２ｂが位置決め部１１ａに係合して保持体３０がガイド体１１に固定される一方、ボタン部材３２の押圧により係止部３２ｂと位置決め部１１ａとの係合が解除されると、保持体３０がガイド体１１の長手方向に沿って移動可能となる。ガイド体１１の表面には、ガイド体１１に対する保持体３０の相対位置を把握するための目盛り（図示せず）がマーキングされている。   As shown in FIGS. 3 and 4, the button member 32 has a window portion 32 a having a rectangular shape in top view through which the guide body 11 is inserted, and the inner circumferential surface of the window portion 32 a has the guide body 11. A long piece-like locking portion 32b that can be engaged with the positioning portion 11a (see FIG. 2) is provided. The button member 32 is urged by a spring material 33 disposed inside the main body 31 so that the pressing portion 32c is exposed to the outside through the opening 31a. In this state, the locking portion 32b is positioned in the positioning portion 11a. The holding body 30 is fixed to the guide body 11 by being engaged with each other, and when the engagement between the locking portion 32b and the positioning portion 11a is released by pressing of the button member 32, the holding body 30 of the guide body 11 is released. It can move along the longitudinal direction. On the surface of the guide body 11, a scale (not shown) for grasping the relative position of the holding body 30 with respect to the guide body 11 is marked.

保持体３０の下部には、図３に示すように、髄内釘４０の長手方向に沿って下方に突出するスパイク状の突起部３４が設けられており、ガイド体１１に沿って保持体３０を移動させることで、図１に示すように、髄内釘４０が挿入される長管骨Ｌの表面に、突起部３４の先端を当接させることができる。   As shown in FIG. 3, a spike-like protrusion 34 that protrudes downward along the longitudinal direction of the intramedullary nail 40 is provided at the lower part of the holding body 30, and along the guide body 11, the holding body 30 is provided. As shown in FIG. 1, the tip of the protrusion 34 can be brought into contact with the surface of the long bone L into which the intramedullary nail 40 is inserted.

また、保持体３０は、ボタン部材３２の窓部３２ａの短辺がガイド体１１の外径と略同じ大きさとされており、窓部３２ａの短辺における内周面がガイド体１１の外周面と摺動しながら回転可能とされている。保持体３０の回転は、係止部３２ｂと位置決め部１１ａとの係合により抑止される。   Further, the holding body 30 has a short side of the window portion 32 a of the button member 32 that is substantially the same size as the outer diameter of the guide body 11, and an inner peripheral surface of the short side of the window portion 32 a is an outer peripheral surface of the guide body 11. And can be rotated while sliding. The rotation of the holding body 30 is suppressed by the engagement between the locking portion 32b and the positioning portion 11a.

次に、上述した髄内釘位置決め装置１を用いて、長管骨Ｌの髄腔に髄内釘４０を位置決めする方法を説明する。まず、髄内釘４０を装着部１０に取り付けると共に、保持体３０は、ガイド体１１の上端側に移動させておく。   Next, a method for positioning the intramedullary nail 40 in the medullary cavity of the long bone B using the intramedullary nail positioning device 1 described above will be described. First, the intramedullary nail 40 is attached to the mounting portion 10, and the holding body 30 is moved to the upper end side of the guide body 11.

上腕骨に髄内釘４０を挿入する場合、上腕骨の髄腔内に公知の方法でガイドワイヤ（図示せず）を挿入した後、このガイドワイヤに沿って、装着部１０に取り付けられた髄内釘４０を先端側から挿入する。髄腔内における髄内釘４０の位置は、目視およびＸ線像により確認することができ、髄内釘４０の挿入深さが最適な状態で、ボタン部材３２を押圧しながら保持体３０を下方にスライドさせ、図１に示すように、突起部３４を長管骨（上腕骨）Ｌの表面に当接させる。ボタン部材３２を離すと、保持体３０はガイド部材１１に固定される。   When the intramedullary nail 40 is inserted into the humerus, a guide wire (not shown) is inserted into the medullary cavity of the humerus by a known method, and then the medulla attached to the mounting portion 10 along the guide wire. The inner nail 40 is inserted from the tip side. The position of the intramedullary nail 40 in the medullary cavity can be confirmed visually and by an X-ray image. With the insertion depth of the intramedullary nail 40 being optimal, the holding member 30 is moved downward while pressing the button member 32. 1 and the projection 34 is brought into contact with the surface of the long bone (humerus) L, as shown in FIG. When the button member 32 is released, the holding body 30 is fixed to the guide member 11.

突起部３４を当接させる長管骨（上腕骨）Ｌの表面が、一部欠損や傾斜角度などとの関係で突起部３４と当接し難い形状となっている場合、保持体３０を、例えば図５（ａ）に示す状態から、ボタン部材３２を押圧しながら回転させて図５（ｂ）に示す状態でボタン部材３２を離すことにより、突起部３４の先端を当接し易い位置に移動して固定することができる。   When the surface of the long canal bone (humerus bone) L with which the protrusion 34 abuts has a shape that is difficult to abut against the protrusion 34 due to a partial defect, an inclination angle, or the like, the holding body 30 is, for example, From the state shown in FIG. 5A, the button member 32 is rotated while being pressed, and the button member 32 is released in the state shown in FIG. Can be fixed.

こうして保持体３０をガイド部材１１に固定した後、ボルト部材１２の上部からガイドワイヤを引き抜く。そして、従来と同様に、髄内釘４０の先端部および基端部における挿通孔にスクリューを挿入し、適当な位置までねじ込むことにより、髄内釘４０を髄腔内に固定する。この施術においては、ターゲット部材２３の案内部２４を適宜用いることができ、例えば、髄内釘４０に向けて案内部２４にプローブを挿入し、軽くタッピングすることにより髄内釘４０が挿入された長管骨Ｌの表面に窪みをつけた後、この案内部２４にタップドリルを挿入してドリリングを行い、髄内釘４０の挿通孔と連通するスクリュー孔を長管骨Ｌに形成する。そして、案内部２４からスクリュー孔にドライバーを挿入して、髄内釘４０を固定するスクリューのねじ込みを行う。   After fixing the holding body 30 to the guide member 11 in this way, the guide wire is pulled out from the upper part of the bolt member 12. As in the prior art, the intramedullary nail 40 is fixed in the medullary cavity by inserting a screw into an insertion hole in the distal end portion and the proximal end portion of the intramedullary nail 40 and screwing it into an appropriate position. In this treatment, the guide portion 24 of the target member 23 can be used as appropriate. For example, the probe is inserted into the guide portion 24 toward the intramedullary nail 40, and the intramedullary nail 40 is inserted by tapping lightly. After the depression of the surface of the long bone L, a tap drill is inserted into the guide portion 24 and drilling is performed, and a screw hole communicating with the insertion hole of the intramedullary nail 40 is formed in the long bone B. Then, a screwdriver is inserted into the screw hole from the guide portion 24 and the screw for fixing the intramedullary nail 40 is screwed.

髄内釘４０を髄腔内に固定した後は、ボルト部材１２を緩めて髄内釘４０から装着部１０を取り外し、施術が終了する。   After fixing the intramedullary nail 40 in the medullary cavity, the bolt member 12 is loosened, the mounting portion 10 is removed from the intramedullary nail 40, and the treatment is completed.

本実施形態の髄内釘位置決め装置１によれば、髄腔内における髄内釘４０の挿入深さを調整した後、保持体３０をガイド部材１１に対して移動して、長管骨Ｌに当接させた状態で固定することにより、その後に髄腔内への髄内釘４０の挿入が不意に進行するのを防止することができる。したがって、髄内釘４０の位置決めを行った後は、施術中に髄内釘４０の位置確認や位置調整を行う必要がなく、髄内釘４０の位置決め作業を容易にすることができる。   According to the intramedullary nail positioning device 1 of the present embodiment, after adjusting the insertion depth of the intramedullary nail 40 in the medullary cavity, the holding body 30 is moved with respect to the guide member 11 to form the long bone B By fixing in the contacted state, it is possible to prevent the subsequent insertion of the intramedullary nail 40 into the medullary cavity. Therefore, after the intramedullary nail 40 is positioned, it is not necessary to confirm or adjust the position of the intramedullary nail 40 during the operation, and the positioning of the intramedullary nail 40 can be facilitated.

また、保持体３０が、髄内釘４０の長手方向に突出する突起部３４を備え、突起部３４の先端が長管骨Ｌと当接するように構成されているので、長管骨Ｌと保持体３０との当接状態を確実にして、髄内釘４０の位置決め精度を良好に維持することができる。   In addition, the holding body 30 includes a protrusion 34 that protrudes in the longitudinal direction of the intramedullary nail 40, and the tip of the protrusion 34 is configured to come into contact with the long canal bone L. The contact state with the body 30 can be ensured, and the positioning accuracy of the intramedullary nail 40 can be maintained well.

また、保持体３０が、ガイド体１１に対して回転可能に設けられているので、突起部３４が当接する長管骨Ｌの表面が欠損などにより当接し難い形状となっている場合に、保持体３０を回転させて、長管骨Ｌの表面における突起部３４の当接箇所を適宜選択することができる。これにより、長管骨Ｌと保持体３０との当接状態をより確実に維持することが可能になる。   Further, since the holding body 30 is provided so as to be rotatable with respect to the guide body 11, the holding body 30 is held when the surface of the long tubular bone L with which the protrusion 34 abuts is difficult to abut due to a defect or the like. By rotating the body 30, the contact portion of the protrusion 34 on the surface of the long bone B can be selected as appropriate. As a result, the contact state between the long bone B and the holding body 30 can be more reliably maintained.

以上、本発明の一実施形態について詳述したが、本発明の具体的な態様は上記実施形態に限定されない。例えば、本実施形態においては、保持体３０を装着部１０に固定する手段として、ばね材３３により付勢されたボタン部材３２を使用し、ボタン部材３２の係止部３２ｂをガイド体１１の位置決め部１１ａに係合させるようにしているが、ボタン部材３２ｂの代わりに着脱可能な螺子部材を使用して、螺子部材の先端を位置決め部１１ａに係合させるようにしてもよい。或いは、保持体３０を弾性変形可能なリング状の部材として、保持体３０をガイド体１１との摩擦力により固定する構成など、他の固定手段を用いることもできる。位置決め部１１ａの形状は、溝以外に、孔や突部などであってもよい。   As mentioned above, although one Embodiment of this invention was explained in full detail, the specific aspect of this invention is not limited to the said embodiment. For example, in this embodiment, the button member 32 biased by the spring material 33 is used as a means for fixing the holding body 30 to the mounting portion 10, and the locking portion 32 b of the button member 32 is positioned in the guide body 11. Although it engages with the portion 11a, a detachable screw member may be used instead of the button member 32b, and the tip of the screw member may be engaged with the positioning portion 11a. Alternatively, other fixing means such as a configuration in which the holding body 30 is fixed by a frictional force with the guide body 11 as a ring-shaped member that can be elastically deformed can be used. The shape of the positioning portion 11a may be a hole or a protrusion other than the groove.

また、保持体３０の突起部３４の形状や配置も、本実施形態のものに限定されず、突起部３４と長管骨Ｌとの当接状態が確実に維持されるように、長管骨Ｌの形状等に応じて適宜変更可能である。   Further, the shape and arrangement of the protrusions 34 of the holding body 30 are not limited to those of the present embodiment, and the long bones are maintained so that the contact state between the protrusions 34 and the long bones L is reliably maintained. It can be appropriately changed according to the shape of L and the like.

本実施形態の髄内釘位置決め装置１は、髄腔への髄内釘４０の挿入が進行しやすい上腕骨に用いる場合に特に好適であるが、これに限定されるものではなく、大腿骨や脛骨など他の長管骨の髄腔に髄内釘４０を挿入する用途にも適用可能である。   The intramedullary nail positioning device 1 of the present embodiment is particularly suitable when used for the humerus where the insertion of the intramedullary nail 40 into the medullary cavity is easy to proceed, but is not limited to this. The present invention is also applicable to the use of inserting the intramedullary nail 40 into the medullary cavity of other long bones such as the tibia.

本発明の一実施形態に係る髄内釘位置決め装置の側面図である。It is a side view of the intramedullary nail positioning device concerning one embodiment of the present invention. 図１に示す髄内釘位置決め装置の一部を拡大して示す断面図である。It is sectional drawing which expands and shows a part of intramedullary nail positioning device shown in FIG. 図１に示す髄内釘位置決め装置における保持体の断面図である。It is sectional drawing of the holding body in the intramedullary nail positioning device shown in FIG. 図３に示す保持体の斜視図である。It is a perspective view of the holding body shown in FIG. 図１に示す髄内釘位置決め装置の使用状態の一例を示す斜視図である。It is a perspective view which shows an example of the use condition of the intramedullary nail positioning device shown in FIG. 従来の髄内釘位置決め装置の側面図である。It is a side view of the conventional intramedullary nail positioning device.

符号の説明Explanation of symbols

１ 髄内釘位置決め装置
１０ 装着部
１１ ガイド体
１１ａ 位置決め部
１２ ボルト部材
２０ 支持部
２１ アーム部材
２３ ターゲット部材
２４ 案内部
３０ 保持体
３１ 本体
３２ ボタン部材
３２ａ 窓部
３２ｂ 係止部
３２ｃ 押圧部
３３ ばね材
３４ 突起部
４０ 髄内釘
４０ａ 基端部
Ｌ 長管骨
DESCRIPTION OF SYMBOLS 1 Intramedullary nail positioning apparatus 10 Mounting part 11 Guide body 11a Positioning part 12 Bolt member 20 Support part 21 Arm member 23 Target member 24 Guide part 30 Holding body 31 Main body 32 Button member 32a Window part 32b Locking part 32c Pressing part 33 Spring Material 34 Protrusion 40 Intramedullary nail 40a Proximal end L Long bone

Claims (4)

長管骨の髄腔に挿入される髄内釘の位置決めを行うための髄内釘位置決め装置であって、
髄内釘の基端部が取り付けられる装着部と、前記装着部に結合される支持部とを備え、髄内釘に向けて器具を案内する案内部が前記支持部に形成されており、
前記装着部に対して髄内釘の長手方向に沿って相対移動可能に設けられた保持体と、該保持体を長管骨と当接した状態で前記装着部に固定する固定手段とを備えることを特徴とする髄内釘位置決め装置。 An intramedullary nail positioning device for positioning an intramedullary nail inserted into the medullary cavity of a long bone,
A mounting portion to which the proximal end portion of the intramedullary nail is attached; and a support portion coupled to the mounting portion; and a guide portion for guiding the instrument toward the intramedullary nail is formed on the support portion.
A holding body provided so as to be relatively movable along the longitudinal direction of the intramedullary nail with respect to the mounting portion, and a fixing means for fixing the holding body to the mounting portion in a state of being in contact with the long canal bone. An intramedullary nail positioning device. 前記保持体は、髄内釘の長手方向に突出する突起部を備えており、前記突起部の先端が長管骨と当接する請求項１に記載の髄内釘位置決め装置。 The intramedullary nail positioning device according to claim 1, wherein the holding body includes a protrusion that protrudes in a longitudinal direction of the intramedullary nail, and a distal end of the protrusion contacts the long bone. 前記保持体は、前記装着部に対して回転可能に設けられている請求項２に記載の髄内釘位置決め装置。 The intramedullary nail positioning device according to claim 2, wherein the holding body is rotatably provided with respect to the mounting portion. 前記装着部は、前記支持部に固定された中空筒状のガイド体と、前記ガイド体に挿入され髄内釘の基端部と螺合するボルト部材とを備え、前記ガイド体には、長手方向に沿って複数の位置決め部が形成されており、
前記固定手段は、前記位置決め部に対して係脱自在となるように前記保持体に設けられた係止部を備える請求項１から３のいずれかに記載の髄内釘位置決め装置。

The mounting portion includes a hollow cylindrical guide body fixed to the support portion, and a bolt member inserted into the guide body and screwed with a proximal end portion of an intramedullary nail. A plurality of positioning parts are formed along the direction,
The intramedullary nail positioning device according to any one of claims 1 to 3, wherein the fixing means includes a locking portion provided on the holding body so as to be freely engaged with and disengaged from the positioning portion.

JP2006192478A 2006-07-13 2006-07-13 Intramedullary nail positioning device Expired - Fee Related JP4512902B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011516150A (en) * 2008-03-31 2011-05-26 オレクラネイル エルエルシー Intramedullary instrument assembly and related methods
CN106420037A (en) * 2016-11-03 2017-02-22 黄雷 Intramedullary nail guider

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07313523A (en) * 1994-05-20 1995-12-05 Asahi Optical Co Ltd Intramedullary nail installing jig
JP2001286480A (en) * 2000-04-06 2001-10-16 Homuzu Giken:Kk Positioning device for bone nails
JP2003275219A (en) * 2002-03-21 2003-09-30 Stryker Trauma Gmbh Fixing nail and collimation device
JP2005279139A (en) * 2004-03-31 2005-10-13 Homuzu Giken:Kk Target device of intramedullary nail

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07313523A (en) * 1994-05-20 1995-12-05 Asahi Optical Co Ltd Intramedullary nail installing jig
JP2001286480A (en) * 2000-04-06 2001-10-16 Homuzu Giken:Kk Positioning device for bone nails
JP2003275219A (en) * 2002-03-21 2003-09-30 Stryker Trauma Gmbh Fixing nail and collimation device
JP2005279139A (en) * 2004-03-31 2005-10-13 Homuzu Giken:Kk Target device of intramedullary nail

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011516150A (en) * 2008-03-31 2011-05-26 オレクラネイル エルエルシー Intramedullary instrument assembly and related methods
CN106420037A (en) * 2016-11-03 2017-02-22 黄雷 Intramedullary nail guider
CN106420037B (en) * 2016-11-03 2023-09-29 黄雷 Intramedullary nail guiding instrument

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