JP2018198982A5 - Fracture fixation device - Google Patents

Fracture fixation device Download PDF

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JP2018198982A5
JP2018198982A5 JP2018172603A JP2018172603A JP2018198982A5 JP 2018198982 A5 JP2018198982 A5 JP 2018198982A5 JP 2018172603 A JP2018172603 A JP 2018172603A JP 2018172603 A JP2018172603 A JP 2018172603A JP 2018198982 A5 JP2018198982 A5 JP 2018198982A5
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hook pin
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本発明は、骨折部での骨主部と骨片を固定するための骨折部固定術用器具に関する。  The present invention relates to a fracture fixation device for fixing a bone main part and a bone fragment at a fracture part.

特許文献１および２のものは、２本のフックピンを有し、骨片（骨頭）の回転を有効に規制可能である。しかし、２つのフックピンは、向かい合うように配置され、突出するとき相反する方向に突出するため、骨片への刺入抵抗が高く、骨片の性状によっては、十分に刺入できない場合があり、また、刺入のための手技が困難な場合があった。
本願の目的は、骨折部位への配置手技が容易である骨折部固定術用器具を提供するものである。 Patent Documents 1 and 2 have two hook pins, and can effectively regulate rotation of a bone fragment (bone head). However, since the two hook pins are arranged to face each other and project in opposite directions when projecting, the insertion resistance to the bone fragment is high, and depending on the nature of the bone fragment, it may not be able to penetrate sufficiently. Moreover, there were cases where the procedure for insertion was difficult.
The object of the present application is to provide a device for fracture fixation which facilitates the placement procedure at the fracture site.

また、上記目的を達成するものは、以下のものである。
（１） 筒状スリーブと、前記スリーブ内に軸方向に移動可能に収納されたフックピン保有部とからなる骨折部固定具と、前記骨折部固定具の前記フックピン保有部の骨への刺入作業および骨に刺入された前記フックピン保有部の抜去作業を行うための骨折部固定具操作用具とからなる骨折部固定術用器具であって、
前記スリーブは、先端閉塞部と、先端部側部に設けられた２つの側孔と、後端部外面に設けられた軸方向に延びる非円筒形要素部と、後端部の内面に設けられた雌ねじ部を備え、
前記フックピン保有部は、保有部本体と、前記保有部本体より先端方向に延び、前記フックピン保有部の先端方向への移動により、先端部が前記スリーブの前記側孔より突出する２本のフックピンと、後端より先端方向に延びるフックピン保有部側螺合部を備え、前記２本のフックピンは、基部と、徐々に肉薄となりかつ外側面方向に湾曲した骨内進入用薄肉先端部を備え、
前記骨折部固定具操作用具は、スリーブ回転規制具と、フックピン保有部押込具と、フックピン保有部引戻具とを備え、
前記スリーブ回転規制具は、筒状本体部と、前記筒状本体部の先端部に形成され、前記スリーブの後端部を収納可能かつ前記非円筒形要素部に対応した内面形態を有し、前記スリーブの後端部を収納し、回転を規制するものとなっており、
前記フックピン保有部押込具は、前記スリーブ回転規制具の前記筒状本体部を挿通可能な筒状部材と、前記筒状部材の後端部に設けられたハンドルとを備え、前記筒状部材は、前記スリーブの後端部内に進入可能であり、外面に前記スリーブの前記雌ねじ部と螺合可能な雄ねじ部を備える先端部と、前記フックピン保有部と当接し、前記フックピン保有部を先端方向に押し込むための押込用当接部とを備え、
前記フックピン保有部引戻具は、前記スリーブ回転規制具の内部に挿入可能であるシャフト部と、前記シャフト部の後端部に設けられた操作部とを備え、前記シャフト部は、前記フックピン保有部の前記フックピン保有部側螺合部と螺合可能な引戻部材側螺合部を備えている骨折部固定術用器具。 Moreover, what achieves the above object are as follows.
(1) A fracture portion fixing device comprising a cylindrical sleeve and a hook pin holding portion axially accommodated in the sleeve, and a work of piercing the bone of the hook pin holding portion of the fracture portion fixing device And a fracture portion fixing device manipulation tool for removing the hook pin holding portion inserted into a bone.
The sleeve is provided on a tip end closing portion, two side holes provided on the tip side, an axially extending non-cylindrical element provided on the outer surface of the rear end, and an inner surface of the rear end. Equipped with a female screw,
The hook pin holding portion includes a holding portion main body, and two hook pins whose distal end portion protrudes from the side hole of the sleeve by the movement of the hook pin holding portion in the distal direction. A hook pin holding portion side screwing portion extending in a distal direction from the rear end, and the two hook pins have a base and a thin tip for bone penetration which is gradually thinned and curved in the outer surface direction,
The fracture fixing tool operating tool includes a sleeve rotation restricting tool, a hook pin holding section pushing tool, and a hook pin holding section retraction tool.
The sleeve rotation restricting device has a cylindrical main body portion and an inner surface formed at the tip end portion of the cylindrical main body portion and capable of containing the rear end portion of the sleeve and corresponding to the non-cylindrical element portion. The rear end of the sleeve is accommodated to restrict rotation.
The hook pin holding portion pushing tool includes a cylindrical member through which the cylindrical main body portion of the sleeve rotation restricting device can be inserted, and a handle provided at the rear end of the cylindrical member, and the cylindrical member A tip end portion of the sleeve provided with an external thread portion which can enter into a rear end portion of the sleeve and which can be screwed to the female screw portion of the sleeve on an outer surface; abuts against the hook pin holding portion; And a pressing abutment for pressing
The hook pin holding portion retractor includes a shaft portion insertable into the sleeve rotation restricting device, and an operation portion provided at a rear end portion of the shaft portion, and the shaft portion holds the hook pin An apparatus for fracture fixation, comprising a retracting member side screwing portion capable of screwing with the hook pin holding portion side screwing portion of the head.

（２） 前記スリーブの前記非円筒形要素部は、軸方向に延びる平坦部、凹部もしくは凸部であり、前記スリーブ回転規制具の前記非円筒形要素部に対応した内面形態は、前記平坦部に対応した平坦部、前記凹部に対応した凸部もしくは前記凸部に対応した凹部である上記（１）に記載の骨折部固定術用器具。
（３） 前記フックピン保有部は、前記フックピン保有部押込具の前記筒状部材内に進入可能かつ前記フックピン保有部押込具の前記押込用当接部に当接可能な小径後端部を備えている上記（１）または（２）に記載の骨折部固定術用器具。
（４） 前記スリーブ回転規制具は、前記筒状本体部より側方に延びるグリップを備えている上記（１）ないし（３）のいずれかに記載の骨折部固定術用器具。
（５） 前記フックピン保有部引戻具と前記フックピン保有部押込具または前記スリーブ回転規制具は、前記フックピン保有部引戻具の前記フックピン保有部側螺合部と前記引戻部材側螺合部との螺合時において当接する螺合時当接部を備え、さらに、前記螺合時当接部の一方または両者により、座面が形成されている上記（１）ないし（４）のいずれかに記載の骨折部固定術用器具。
（６） 前記フックピン保有部側螺合部は、前記保有部本体の後端より先端方向に延びる凹部と、前記凹部の内面に形成された雌ねじ部により形成されており、前記引戻部材側螺合部は、前記保有部本体の前記凹部内に進入可能かつ前記凹部の雌ねじ部と螺合可能な雄ねじ部を有する先端部により形成されている上記（１）ないし（５）のいずれかに記載の骨折部固定術用器具。
（７） 前記骨折部固定具操作用具は、殴打により前記フックピンを前記スリーブより突出させるためのフックピン保有部殴打具を備え、前記フックピン保有部殴打具は、前記フックピン保有部の後端面に当接可能な先端面を有するシャフト部と、前記シャフト部の後端部に設けられた殴打用基部とを備えている上記（１）ないし（６）のいずれかに記載の骨折部固定術用器具。
（８） 前記殴打用基部は、殴打用後端面を備えている上記（７）に記載の骨折部固定術用器具。
（９） 前記フックピン保有部の後端面は、中心部に位置する前記フックピン保有部側螺合部の開口と、前記開口の周縁に形成された環状平坦面を有し、前記シャフト部の先端面は、前記フックピン保有部の前記環状平坦面と当接可能な平坦面となっている上記（７）または（８）に記載の骨折部固定術用器具。
（１０） 筒状スリーブと、前記スリーブ内に軸方向に移動可能に収納されたフックピン保有部とからなる骨折部固定具と、前記骨折部固定具の前記フックピン保有部の骨への刺入作業を行うための骨折部固定具操作用具とからなる骨折部固定術用器具であって、
前記スリーブは、先端閉塞部と、先端部側部に設けられた２つの側孔とを備え、
前記フックピン保有部は、保有部本体と、前記保有部本体より先端方向に延び、前記フックピン保有部の後方からの押込により、前記スリーブの前記側孔より突出する２本のフックピンとを備え、
前記２本のフックピンは、先端方向に延び、かつ細長い平板状の本体部を備え、さらに、前記２本のフックピンは、前記本体部における軸方向上部が近接し、軸方向下部が離間した状態にて、前記スリーブ内を傾斜状態にて軸方向に延びるものとなっており、
さらに、前記本体部は、徐々に肉薄となりかつ前記フックピンの外側面方向に湾曲した骨内進入用薄肉先端部を備え、前記スリーブは、前記先端閉塞部の内面に形成され、前記２つの側孔間に位置し後方に突出する頂部と、前記頂部の両側部に設けられ、前記側孔に向かって延びる２つのフックピン先端部誘導面を備え、
前記２本のフックピンの前記骨内進入用薄肉先端部は、前記フックピン保有部の後方からの押込により、前記スリーブの前記側孔より斜め上方に向かって突出するものとなっており、
前記骨折部固定具操作用具は、殴打により前記フックピンを前記スリーブより突出させるためのフックピン保有部殴打具を備え、前記フックピン保有部殴打具は、前記フックピン保有部の後端面に当接可能な先端面を有するシャフト部と、前記シャフト部の後端部に設けられた殴打用基部とを備えていることを特徴とする骨折部固定術用器具。
（１１） 前記殴打用基部は、殴打用後端面を備えている上記（１０）に記載の骨折部固定術用器具。
（１２） 前記フックピン保有部の後端面は、中心部に位置するフックピン保有部側螺合部の開口と、前記開口の周縁に形成された環状平坦面を有し、前記シャフト部の先端面は、前記フックピン保有部の前記環状平坦面と当接可能な平坦面となっている上記（１０）または（１１）に記載の骨折部固定術用器具。
（１３） 前記フックピン保有部は、前記保有部本体と、前記保有部本体より先端方向に延びる２本の前記フックピンを備える一体物である上記（１）ないし（１２）のいずれかに記載の骨折部固定術用器具。 (2) The non-cylindrical element portion of the sleeve is an axially extending flat portion, a recess or a convex portion, and the inner surface form corresponding to the non-cylindrical element portion of the sleeve rotation restricting device is the flat portion The device for fracture fixation according to the above (1), which is a flat portion corresponding to a convex portion corresponding to the concave portion or a concave portion corresponding to the convex portion.
(3) The hook pin holding portion has a small diameter rear end portion which can enter into the cylindrical member of the hook pin holding portion pushing tool and can abut against the pressing contact portion of the hook pin holding portion pushing tool. The fracture fixation device according to (1) or (2) above.
(4) The device for fracture fixation according to any one of (1) to (3), wherein the sleeve rotation restricting device includes a grip extending laterally from the cylindrical main body.
(5) The hook pin holding portion retractor and the hook pin holding portion pushing tool or the sleeve rotation restricting device are the hook pin holding portion side screwing portion and the pulling back member side screwing portion of the hook pin holding portion retractor. (1) to (4) in which a seating surface is formed by one or both of the screwing contact portions. The fracture fixation device according to claim 1.
(6) The hook pin holding portion side screwing portion is formed by a concave portion extending in the front end direction from the rear end of the holding portion main body, and a female screw portion formed on the inner surface of the concave portion The joint portion is formed by a tip portion having an external thread portion which can enter into the concave portion of the holding portion main body and can be screwed with the female screw portion of the concave portion, according to any one of the above (1) to (5) Fracture fixation device.
( 7 ) The fracture portion fixing tool operating tool includes a hook pin holding portion hitting tool for causing the hook pin to protrude from the sleeve by hitting, and the hook pin holding portion hitting tool abuts on a rear end surface of the hook pin holding portion The fracture portion fixing instrument according to any one of the above (1) to ( 6 ), which comprises a shaft portion having a possible distal end surface and a striking base provided at a rear end portion of the shaft portion.
( 8 ) The device for fracture fixation according to the above ( 7 ), wherein the tapping base includes a trailing end face for hitting.
( 9 ) The rear end surface of the hook pin holding portion has an opening of the hook pin holding portion side screwing portion located at the central portion and an annular flat surface formed on the periphery of the opening, and the tip end surface of the shaft portion The fracture fixation device according to the above ( 7 ) or ( 8 ), which is a flat surface capable of coming into contact with the annular flat surface of the hook pin holding portion.
(10) A fracture portion fixing device comprising a cylindrical sleeve and a hook pin holding portion housed axially movably in the sleeve, and a work of piercing the bone of the hook pin holding portion of the fracture portion fixing device A fracture fixation device comprising a fracture fixation device operating tool for performing
The sleeve comprises a tip closure and two side holes provided on the side of the tip,
The hook pin holding portion includes a holding portion main body, and two hook pins extending in a distal direction from the holding portion main body and projecting from the side hole of the sleeve by pushing from behind the hook pin holding portion.
The two hook pins have a flat, elongated main body that extends in the distal direction, and the two hook pins are arranged such that the upper axial portions of the main body portions are close to each other and the lower axial portions are separated. And extends axially in the sleeve in an inclined manner,
Furthermore, the main body portion is provided with a thin tip for bone penetration which is gradually thinned and curved in the direction of the outer surface of the hook pin, and the sleeve is formed on the inner surface of the tip blocking portion, and the two side holes A rearwardly projecting apex located between the two hook pin tip guiding surfaces provided on both sides of the apex and extending toward the side hole;
The thin tip end portions for the bone entry into the two hook pins project obliquely upward from the side hole of the sleeve by pushing from behind the hook pin holding portion,
The fracture portion fixing tool operation tool includes a hook pin holding portion hitting tool for causing the hook pin to protrude from the sleeve by a strike, and the hook pin holding portion hitting tool has a tip that can contact the rear end surface of the hook pin holding portion. A fracture portion fixing device comprising: a shaft portion having a surface; and a striking base provided at a rear end portion of the shaft portion.
(11) The device for fracture fixation according to the above (10), wherein the tapping base includes a trailing end face for hitting.
(12) The rear end surface of the hook pin holding portion has an opening of the hook pin holding portion side screwing portion located at the central portion and an annular flat surface formed on the periphery of the opening, and the tip end surface of the shaft portion (10) The device for fracture fixation according to (10) or (11) above, which is a flat surface that can contact with the annular flat surface of the hook pin holding portion.
(13) The fracture according to any one of (1) to (12), wherein the hook pin holding portion is an integral body including the holding portion body and two hook pins extending in the distal direction from the holding portion body. Head fixation device.

次に、フックピン保有部３について説明する。
フックピン保有部３は、図２０に示すように、保有部本体４より先端方向に延び、フックピン保有部３の後方からの押込により、スリーブ２の側孔２４ａ，２４ｂより突出する２本のフックピン５，６とを備える。そして、２本のフックピン５，６は、基部５４，６４と、基部５４，６４より先端方向に延び、かつ細長い平板状の本体部５１，６１を備える。
さらに、２本のフックピン５，６は、本体部５１，６１における軸方向上部５１ａ，６１ａが近接し、軸方向下部５１ｂ，６１ｂが離間し、一方のフックピン５，６の本体部５１，６１は一方の側部下方に傾斜した状態にて軸方向に延び、他方のフックピン５，６の本体部５１，６１は他方の側部下方に傾斜した状態で軸方向に延びるものとなっている。また、２本のフックピン５，６は、接触することなく、軸方向にのびている。また、２本のフックピンの本体部は、軸方向上部が近接し、前記軸方向下部が離間した状態にて、前記スリーブ内を傾斜状態にて軸方向に延びるものとなっている。 Next, the hook pin holding portion 3 will be described.
The hook pin holding portion 3 extends in the distal direction from the holding portion main body 4 as shown in FIG. 20, and the two hook pins 5 protruding from the side holes 24a and 24b of the sleeve 2 by pushing the hook pin holding portion 3 from the rear. , 6). The two hook pins 5 and 6 include base portions 54 and 64, and flat-plate shaped main body portions 51 and 61 extending in the distal direction from the base portions 54 and 64.
Furthermore, in the two hook pins 5 and 6, the axially upper portions 51a and 61a of the main body portions 51 and 61 are close, the axially lower portions 51b and 61b are separated, and the body portions 51 and 61 of one of the hook pins 5 and 6 are The main body portions 51 and 61 of the other hook pins 5 and 6 extend in the axial direction in a state of being inclined below the other side. Also, the two hook pins 5, 6 extend in the axial direction without contact. Further, the main body portions of the two hook pins extend in the axial direction in an inclined state in the inside of the sleeve in a state in which the upper part in the axial direction is close and the lower part in the axial direction is separated.

Claims (13)

筒状スリーブと、前記スリーブ内に軸方向に移動可能に収納されたフックピン保有部とからなる骨折部固定具と、前記骨折部固定具の前記フックピン保有部の骨への刺入作業および骨に刺入された前記フックピン保有部の抜去作業を行うための骨折部固定具操作用具とからなる骨折部固定術用器具であって、
前記スリーブは、先端閉塞部と、先端部側部に設けられた２つの側孔と、後端部外面に設けられた軸方向に延びる非円筒形要素部と、後端部の内面に設けられた雌ねじ部を備え、
前記フックピン保有部は、保有部本体と、前記保有部本体より先端方向に延び、前記フックピン保有部の先端方向への移動により、先端部が前記スリーブの前記側孔より突出する２本のフックピンと、後端より先端方向に延びるフックピン保有部側螺合部を備え、前記２本のフックピンは、基部と、徐々に肉薄となりかつ外側面方向に湾曲した骨内進入用薄肉先端部を備え、
前記骨折部固定具操作用具は、スリーブ回転規制具と、フックピン保有部押込具と、フックピン保有部引戻具とを備え、
前記スリーブ回転規制具は、筒状本体部と、前記筒状本体部の先端部に形成され、前記スリーブの後端部を収納可能かつ前記非円筒形要素部に対応した内面形態を有し、前記スリーブの後端部を収納し、回転を規制するものとなっており、
前記フックピン保有部押込具は、前記スリーブ回転規制具の前記筒状本体部を挿通可能な筒状部材と、前記筒状部材の後端部に設けられたハンドルとを備え、前記筒状部材は、前記スリーブの後端部内に進入可能であり、外面に前記スリーブの前記雌ねじ部と螺合可能な雄ねじ部を備える先端部と、前記フックピン保有部と当接し、前記フックピン保有部を先端方向に押し込むための押込用当接部とを備え、
前記フックピン保有部引戻具は、前記スリーブ回転規制具の内部に挿入可能であるシャフト部と、前記シャフト部の後端部に設けられた操作部とを備え、前記シャフト部は、前記フックピン保有部の前記フックピン保有部側螺合部と螺合可能な引戻部材側螺合部を備えていることを特徴とする骨折部固定術用器具。 A fracture fixing device comprising a cylindrical sleeve and a hook pin holding portion axially and movably accommodated in the sleeve, and an operation for inserting a bone of the hook pin holding portion of the fracture fixing member into a bone and a bone It is a fracture portion fixing surgical instrument comprising a fracture portion fixing tool operation tool for removing the inserted hook pin holding portion,
The sleeve is provided on a tip end closing portion, two side holes provided on the tip side, an axially extending non-cylindrical element provided on the outer surface of the rear end, and an inner surface of the rear end. Equipped with a female screw,
The hook pin holding portion includes a holding portion main body, and two hook pins whose distal end portion protrudes from the side hole of the sleeve by the movement of the hook pin holding portion in the distal direction. A hook pin holding portion side screwing portion extending in a distal direction from the rear end, and the two hook pins have a base and a thin tip for bone penetration which is gradually thinned and curved in the outer surface direction,
The fracture fixing tool operating tool includes a sleeve rotation restricting tool, a hook pin holding section pushing tool, and a hook pin holding section retraction tool.
The sleeve rotation restricting device has a cylindrical main body portion and an inner surface formed at the tip end portion of the cylindrical main body portion and capable of containing the rear end portion of the sleeve and corresponding to the non-cylindrical element portion. The rear end of the sleeve is accommodated to restrict rotation.
The hook pin holding portion pushing tool includes a cylindrical member through which the cylindrical main body portion of the sleeve rotation restricting device can be inserted, and a handle provided at the rear end of the cylindrical member, and the cylindrical member A tip end portion of the sleeve provided with an external thread portion which can enter into a rear end portion of the sleeve and which can be screwed to the female screw portion of the sleeve on an outer surface; abuts against the hook pin holding portion; And a pressing abutment for pressing
The hook pin holding portion retractor includes a shaft portion insertable into the sleeve rotation restricting device, and an operation portion provided at a rear end portion of the shaft portion, and the shaft portion holds the hook pin A device for fracture fixation, comprising: a retracting member side screwing portion capable of being screwed with the hook pin holding portion side screwing portion of the part. 前記スリーブの前記非円筒形要素部は、軸方向に延びる平坦部、凹部もしくは凸部であり、前記スリーブ回転規制具の前記非円筒形要素部に対応した内面形態は、前記平坦部に対応した平坦部、前記凹部に対応した凸部もしくは前記凸部に対応した凹部である請求項１に記載の骨折部固定術用器具。 The non-cylindrical element portion of the sleeve is an axially extending flat portion, a recess or a convex portion, and an inner surface form corresponding to the non-cylindrical element portion of the sleeve rotation restricting device corresponds to the flat portion. plateau fracture fixation appliance as claimed in claim 1, which is a concave portion corresponding to the convex portion or the convex portion corresponding to the recess. 前記フックピン保有部は、前記フックピン保有部押込具の前記筒状部材内に進入可能かつ前記フックピン保有部押込具の前記押込用当接部に当接可能な小径後端部を備えている請求項１または２に記載の骨折部固定術用器具。 The hook pin holding portion is provided with a small diameter rear end portion capable of entering into the tubular member of the hook pin holding portion pushing tool and capable of abutting on the pressing contact portion of the hook pin holding portion pushing tool. The fracture fixation device according to 1 or 2 . 前記スリーブ回転規制具は、前記筒状本体部より側方に延びるグリップを備えている請求項１ないし３のいずれかに記載の骨折部固定術用器具。 The device for fracture fixation according to any one of claims 1 to 3 , wherein the sleeve rotation restricting device comprises a grip extending laterally from the cylindrical main body. 前記フックピン保有部引戻具と前記フックピン保有部押込具または前記スリーブ回転規制具は、前記フックピン保有部引戻具の前記フックピン保有部側螺合部と前記引戻部材側螺合部との螺合時において当接する螺合時当接部を備え、さらに、前記螺合時当接部の一方または両者により、座面が形成されている請求項１ないし４のいずれかに記載の骨折部固定術用器具。 The hook pin holding portion retractor and the hook pin holding portion push-in device or the sleeve rotation restricting member are screws of the hook pin holding portion side screwing portion of the hook pin holding portion retractor and the pulling-back member side screwing portion. The bone fracture portion fixation according to any one of claims 1 to 4 , further comprising: a screwing contact portion that comes into contact at the same time, and a seating surface is formed by one or both of the screwing contact portions. Surgical instruments. 前記フックピン保有部側螺合部は、前記保有部本体の後端より先端方向に延びる凹部と、前記凹部の内面に形成された雌ねじ部により形成されており、前記引戻部材側螺合部は、前記保有部本体の前記凹部内に進入可能かつ前記凹部の雌ねじ部と螺合可能な雄ねじ部を有する先端部により形成されている請求項１ないし５のいずれかに記載の骨折部固定術用器具。 The hook pin holding portion side screwing portion is formed by a concave portion extending in the front end direction from the rear end of the holding portion main body and a female screw portion formed on the inner surface of the concave portion, and the pullback member side screwing portion 6. The fracture portion fixing method according to any one of claims 1 to 5 , formed by a tip portion having an external thread portion which can enter into the concave portion of the holding portion main body and can be screwed with the female screw portion of the concave portion. Appliance. 前記骨折部固定具操作用具は、殴打により前記フックピンを前記スリーブより突出させるためのフックピン保有部殴打具を備え、前記フックピン保有部殴打具は、前記フックピン保有部の後端面に当接可能な先端面を有するシャフト部と、前記シャフト部の後端部に設けられた殴打用基部とを備えている請求項１ないし６のいずれかに記載の骨折部固定術用器具。 The fracture portion fixing tool operation tool includes a hook pin holding portion hitting tool for causing the hook pin to protrude from the sleeve by a strike, and the hook pin holding portion hitting tool has a tip that can contact the rear end surface of the hook pin holding portion. The fracture portion fixing instrument according to any one of claims 1 to 6 , further comprising: a shaft portion having a surface and a hammering base provided at a rear end portion of the shaft portion. 前記殴打用基部は、殴打用後端面を備えている請求項７に記載の骨折部固定術用器具。 The device for fracture fixation according to claim 7 , wherein the striking base comprises a striking rear end surface. 前記フックピン保有部の後端面は、中心部に位置する前記フックピン保有部側螺合部の開口と、前記開口の周縁に形成された環状平坦面を有し、前記シャフト部の先端面は、前記フックピン保有部の前記環状平坦面と当接可能な平坦面となっている請求項７または８に記載の骨折部固定術用器具。 The rear end surface of the hook pin holding portion has an opening of the hook pin holding portion side screwing portion located at the central portion, and an annular flat surface formed on the periphery of the opening, and the tip end surface of the shaft portion The fracture fixation instrument according to claim 7 or 8 , wherein the flat surface is capable of abutting on the annular flat surface of the hook pin holding portion. 筒状スリーブと、前記スリーブ内に軸方向に移動可能に収納されたフックピン保有部とからなる骨折部固定具と、前記骨折部固定具の前記フックピン保有部の骨への刺入作業を行うための骨折部固定具操作用具とからなる骨折部固定術用器具であって、In order to perform a penetrating operation on a bone of a fractured part fixing tool comprising a cylindrical sleeve and a hook pin holding part housed axially movably in the sleeve, and the hook pin holding part of the fractured part fixing tool A fracture fixation device comprising the fracture fixation device operating tool of
前記スリーブは、先端閉塞部と、先端部側部に設けられた２つの側孔とを備え、  The sleeve comprises a tip closure and two side holes provided on the side of the tip,
前記フックピン保有部は、保有部本体と、前記保有部本体より先端方向に延び、前記フックピン保有部の後方からの押込により、前記スリーブの前記側孔より突出する２本のフックピンとを備え、  The hook pin holding portion includes a holding portion main body, and two hook pins extending in a distal direction from the holding portion main body and projecting from the side hole of the sleeve by pushing from behind the hook pin holding portion.
前記２本のフックピンは、先端方向に延び、かつ細長い平板状の本体部を備え、さらに、前記２本のフックピンは、前記本体部における軸方向上部が近接し、軸方向下部が離間した状態にて、前記スリーブ内を傾斜状態にて軸方向に延びるものとなっており、  The two hook pins have a flat, elongated main body that extends in the distal direction, and the two hook pins are arranged such that the upper axial portions of the main body portions are close to each other and the lower axial portions are separated. And extends axially in the sleeve in an inclined manner,
さらに、前記本体部は、徐々に肉薄となりかつ前記フックピンの外側面方向に湾曲した骨内進入用薄肉先端部を備え、  Furthermore, the main body portion is provided with a thin tip end for bone penetration which is gradually thinned and curved in the direction of the outer surface of the hook pin,
前記スリーブは、前記先端閉塞部の内面に形成され、前記２つの側孔間に位置し後方に突出する頂部と、前記頂部の両側部に設けられ、前記側孔に向かって延びる２つのフックピン先端部誘導面を備え、The sleeve is formed on the inner surface of the distal end closing portion, and includes a top projecting between the two side holes and projecting rearward, and two hook pin tips provided on both sides of the top and extending toward the side holes Equipped with a guiding surface,
前記２本のフックピンの前記骨内進入用薄肉先端部は、前記フックピン保有部の後方からの押込により、前記スリーブの前記側孔より斜め上方に向かって突出するものとなっており、  The thin tip end portions for the bone entry into the two hook pins project obliquely upward from the side hole of the sleeve by pushing from behind the hook pin holding portion,
前記骨折部固定具操作用具は、殴打により前記フックピンを前記スリーブより突出させるためのフックピン保有部殴打具を備え、前記フックピン保有部殴打具は、前記フックピン保有部の後端面に当接可能な先端面を有するシャフト部と、前記シャフト部の後端部に設けられた殴打用基部とを備えていることを特徴とする骨折部固定術用器具。  The fracture portion fixing tool operation tool includes a hook pin holding portion hitting tool for causing the hook pin to protrude from the sleeve by a strike, and the hook pin holding portion hitting tool has a tip that can contact the rear end surface of the hook pin holding portion. A fracture portion fixing device comprising: a shaft portion having a surface; and a striking base provided at a rear end portion of the shaft portion. 前記殴打用基部は、殴打用後端面を備えている請求項１０に記載の骨折部固定術用器具。11. The fracture fixation instrument according to claim 10, wherein the striking base comprises a striking rear end surface. 前記フックピン保有部の後端面は、中心部に位置するフックピン保有部側螺合部の開口と、前記開口の周縁に形成された環状平坦面を有し、前記シャフト部の先端面は、前記フックピン保有部の前記環状平坦面と当接可能な平坦面となっている請求項１０または１１に記載の骨折部固定術用器具。The rear end surface of the hook pin holding portion has an opening of the hook pin holding portion side screwing portion located at the central portion and an annular flat surface formed on the periphery of the opening, and the tip end surface of the shaft portion is the hook pin The fracture fixation instrument according to claim 10 or 11, which is a flat surface capable of abutting on the annular flat surface of the holding portion. 前記フックピン保有部は、前記保有部本体と、前記保有部本体より先端方向に延びる２本の前記フックピンを備える一体物である請求項１ないし１２のいずれかに記載の骨折部固定術用器具。The apparatus for fracture fixation according to any one of claims 1 to 12, wherein the hook pin holding portion is an integral body including the holding portion main body and two hook pins extending in the distal direction from the holding portion main body.
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US2396276A (en) * 1943-06-11 1946-03-12 Bocjl Corp Expansible prong device
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US4561432A (en) * 1983-09-15 1985-12-31 Floyd A. Coard, M.D. Fractured femur fixation system
IT1265965B1 (en) * 1994-05-20 1996-12-16 Francesco Saverio Santori ENDOMILLARY DEVICE FOR LONG BONE NAILING.
SE0203583L (en) * 2002-12-04 2003-12-23 Henrik Hansson Device for fixing means for fixing bone fragments in case of fracture
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