JP2973316B1 - Fixing structure of lag screw used for nail for implant - Google Patents
Fixing structure of lag screw used for nail for implantInfo
- Publication number
- JP2973316B1 JP2973316B1 JP10221630A JP22163098A JP2973316B1 JP 2973316 B1 JP2973316 B1 JP 2973316B1 JP 10221630 A JP10221630 A JP 10221630A JP 22163098 A JP22163098 A JP 22163098A JP 2973316 B1 JP2973316 B1 JP 2973316B1
- Authority
- JP
- Japan
- Prior art keywords
- lag screw
- fixing member
- screw
- nail
- implant
- 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 - Lifetime
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
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/74—Devices for the head or neck or trochanter of the femur
- A61B17/742—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck
- A61B17/744—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck the longitudinal elements coupled to an intramedullary nail
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
【要約】
【課題】 インプラント用ネイルに用いるラグスクリュ
ー及びその固定構造を提供する。
【解決手段】 先端部１１にねじ部を有し、胴部１２か
ら基部１３にかけて断面六角形状に形成し、中央長手方
向にガイドワイヤー挿通用の貫通孔を形成したラグスク
リュー１０と、頭部２１にラグスクリューの断面六角形
状に嵌合する六角溝を有し、基部２３は円柱状であっ
て、ドライバー嵌合用の嵌合穴を形成した固定部材２０
と、外周にねじ部を有する押圧部３１と円板状の蓋部３
２とから構成した締結部材３０とを使用し、インプラン
ト用ネイル１を骨内に挿入し、ラグスクリューをねじ込
んだ状態において、固定部材を、その頭部の六角溝がラ
グスクリューの六角状胴部に嵌合するように挿入し、締
結部材をねじ込んで、その押圧部が固定部材の基部の頂
部２５に当接してラグスクリューが押圧される。A lag screw used for an implant nail and a fixing structure thereof are provided. A lag screw having a screw portion at a distal end portion, having a hexagonal cross section from a body portion to a base portion, and having a through hole for inserting a guide wire in a central longitudinal direction; A fixing member 20 having a hexagonal groove for fitting into a hexagonal cross section of a lag screw, a base 23 having a cylindrical shape, and having a fitting hole for fitting a driver.
And a pressing portion 31 having a screw portion on the outer periphery and a disc-shaped lid portion 3
In a state where the nail for implant 1 is inserted into the bone and the lag screw is screwed in using the fastening member 30 composed of the fixing member 30 and the hexagonal groove of the head, the hexagonal groove of the head of the lag screw is used. Then, the fastening member is screwed in, and the pressing portion thereof abuts on the top 25 of the base of the fixing member to press the lag screw.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、主に転子部骨折の
骨接合術に関し、特にインプラント用ネイルに用いるラ
グスクリューの固定構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to osteosynthesis of trochanteric fractures, and more particularly to a lag screw fixing structure used for an implant nail.
【０００２】[0002]
【従来の技術】従来より使用されてきたインプラント用
ネイル１に用いるラグスクリュー４としては、図１２に
示すように、その胴部５に長手方向の溝６を複数形成し
たものがあり、当該溝付きラグスクリュー４と、先端部
８が尖形の固定ロッド７とを使用し、図１３に示すよう
に、インプラント用ネイル１に前記固定ロッド７をねじ
込んで、インプラント用ネイル１に挿通した溝付きラグ
スクリュー４の溝６に前記固定ロッド７の先端部８を強
く押し当てることによりラグスクリュー４を固定してい
た。2. Description of the Related Art As shown in FIG. 12, a lag screw 4 used for a conventionally used implant nail 1 includes a body 5 having a plurality of longitudinal grooves 6 formed therein. As shown in FIG. 13, a threaded lag screw 4 and a fixed rod 7 having a pointed tip 8 are used. The fixed rod 7 is screwed into the nail 1 for implant, and a groove is inserted through the nail 1 for implant. The lag screw 4 was fixed by strongly pressing the tip 8 of the fixed rod 7 against the groove 6 of the lag screw 4.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記のような
従来のラグスクリュー４の固定構造では、固定ロッド７
をラグスクリューの溝６に押し当てて固定ロッドの先端
部８によりラグスクリュー４を押圧するだけのため、ラ
グスクリュー４の進退方向には点接触となるので、固定
が不安定になり、場合によってはラグスクリュー４がず
れ動いて短縮転位等のトラブルが発生するおそれがあ
る。また、固定ロッド５のラグスクリュー４に対する押
圧に緩みが生じた場合には、ラグスクリュー４が回転す
るおそれがあり、回旋が生じて骨の接合に支障を来たす
こともあり得る。さらに、患者の骨接合の状況に応じて
は、接合すべき骨同士間の圧力を若干緩める場合があ
り、そのような場合には、固定ロッド７を緩めることに
なり、その結果、ラグスクリュー４が回転することによ
り回旋によるトラブルが発生するおそれが高くなる。However, in the conventional lag screw 4 fixing structure as described above, the fixing rod 7
Is pressed against the groove 6 of the lag screw and only the lag screw 4 is pressed by the tip 8 of the fixing rod, so that point contact is made in the advancing and retreating direction of the lag screw 4, and the fixing becomes unstable. In this case, the lag screw 4 may shift and cause a problem such as shortened dislocation. Further, when the fixing rod 5 is loosely pressed against the lag screw 4, the lag screw 4 may be rotated, and rotation may occur, which may hinder the joining of the bones. Further, depending on the condition of the patient's osteosynthesis, the pressure between the bones to be joined may be slightly relaxed. In such a case, the fixing rod 7 is loosened, and as a result, the lag screw 4 Due to the rotation, there is a high possibility that troubles due to rotation will occur.
【０００４】そこで、本発明者は鋭意研究を重ね、ラグ
スクリューの回転を規制して回旋が完全に防止できると
共に、ラグスクリューが進退方向へずれ動くことを規制
して短縮転位を防止でき、かつ、ラグスクリューが進退
方向へずれ動くように調節した場合でも回旋に対しては
十分に防止し得るインプラント用ネイルに用いるラグス
クリュー及びその固定構造を発明した。Therefore, the inventor of the present invention has conducted intensive research and has found that the rotation of the lag screw can be restricted to prevent the rotation completely, and that the lag screw can be prevented from moving in the reciprocating direction to prevent the shortened dislocation. Invented is a lag screw used for an implant nail and a fixing structure thereof, which can sufficiently prevent rotation even when the lag screw is adjusted to move in the reciprocating direction.
【０００５】[0005]
【課題を解決するための手段】本発明に係る請求項１の
インプラント用ネイルに用いるラグスクリューの固定構
造は、前記の断面多角形状のラグスクリューと、前記ラ
グスクリューの多角形状に嵌合する嵌合頭部を有する固
定部材と、該固定部材を押圧する締結部材とにより、イ
ンプラント用ネイルにおけるラグスクリュー挿通穴に前
記ラグスクリューを挿通し、該ラグスクリューの胴部に
固定部材を嵌合させ、前記締結部材を締付けることによ
り該固定部材を押圧してラグスクリューを固定する構成
としたものである。According to a first aspect of the present invention, there is provided a lag screw fixing structure for use in an implant nail, wherein the lag screw has a polygonal cross section and a fitting that fits into the polygonal shape of the lag screw. A fixing member having a joint head and a fastening member that presses the fixing member, insert the lag screw into the lag screw insertion hole in the nail for implant, and fit the fixing member to the body of the lag screw, The lag screw is fixed by pressing the fixing member by tightening the fastening member.
【０００６】上記のように構成したことにより、断面多
角形状のラグスクリューは、該ラグスクリューの多角形
状に嵌合する嵌合頭部を有する固定部材により嵌合され
るので、ラグスクリューの回転を完全に規制できる。ま
た、ラグスクリューと前記の固定部材は、面接触である
ので、ラグスクリューがずれ動くようなおそれがなく、
安定的に固定される。また、ラグスクリューに設けたス
トッパーは、ラグスクリューのずれ動きを許容するよう
に調節した場合でも、該ストッパーにより、予定の範囲
以上にずれることがない。[0006] With the above configuration, the lag screw having a polygonal cross section is fitted by the fixing member having the fitting head that fits in the polygonal shape of the lag screw. Can be completely regulated. In addition, since the lag screw and the fixing member are in surface contact, there is no possibility that the lag screw is shifted,
It is fixed stably. Further, even if the stopper provided on the lag screw is adjusted so as to allow the lag screw to shift, the stopper does not shift beyond a predetermined range.
【０００７】[0007]
【発明の実施の形態】以下に本発明の好適な実施例を、
図面を参照しつつ詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below.
This will be described in detail with reference to the drawings.
【０００８】図１は本発明に係るラグスクリューの斜視
図であり、図２は前記ラグスクリューのＡ−Ａ線断面図
である。図３は固定部材の斜視図であり、図４は締結部
材の斜視図である。図５はラグスクリューに固定部材を
嵌め込む状態を示す概略図であり、図６はラグスクリュ
ーと固定部材の嵌合状態を示す斜視図である。図７は固
定部材を押圧する締結部材をねじ込む状態を示す概略図
であり、図８はラグスクリューに固定部材を嵌め込み、
締結部材をねじ込んだ状態を示す一部切欠斜視図であ
る。図９はラグスクリューに固定部材を嵌め込み、締結
部材をねじ込んだ状態を示すインプラント用ネイルの頭
部の概略図であり、図１０はラグスクリューに固定部材
を嵌め込み、締結部材をねじ込んだ状態を示すインプラ
ント用ネイルの別方向から見た頭部の概略図である。図
１１は第２の実施例であって、ラグスクリューに固定部
材を嵌め込み、締結部材をねじ込んだ状態を示す一部切
欠斜視図である。FIG. 1 is a perspective view of a lag screw according to the present invention, and FIG. 2 is a sectional view of the lag screw taken along line AA. FIG. 3 is a perspective view of the fixing member, and FIG. 4 is a perspective view of the fastening member. FIG. 5 is a schematic view showing a state in which the fixing member is fitted into the lag screw, and FIG. 6 is a perspective view showing a fitting state of the lag screw and the fixing member. FIG. 7 is a schematic diagram showing a state in which a fastening member that presses the fixing member is screwed, and FIG. 8 shows a state in which the fixing member is fitted into the lag screw.
It is a partially notched perspective view which shows the state which screwed the fastening member. FIG. 9 is a schematic view of the head of the nail for an implant showing a state where the fixing member is fitted into the lag screw and the fastening member is screwed, and FIG. 10 shows a state where the fixing member is fitted into the lag screw and the fastening member is screwed. It is the schematic of the head seen from another direction of the nail for implants. FIG. 11 is a partially cutaway perspective view showing a second embodiment, in which a fixing member is fitted into a lag screw and a fastening member is screwed.
【０００９】図１に示すラグスクリュー１０は、先端部
１１にねじ部を有し、胴部１２から基部１３にかけて、
図２に示すように断面六角形状に形成されてなるもので
ある。該ラグスクリュー１０は、図２に示すように長手
方向の中央にガイドワイヤー挿通用の貫通孔１４が形成
されている。A lag screw 10 shown in FIG. 1 has a threaded portion at a distal end 11 and extends from a body 12 to a base 13.
It is formed in a hexagonal cross section as shown in FIG. As shown in FIG. 2, the lag screw 10 has a through hole 14 for inserting a guide wire at the center in the longitudinal direction.
【００１０】図３に示す固定部材２０は、その頭部２１
（図における下部）が前記ラグスクリュー１０の断面六
角形状に嵌合する六角溝２２を有する挾着型に形成さ
れ、基部２３（図における上部）は円柱状であって、そ
の中央にはドライバー嵌合用の嵌合穴２４が形成された
ものである。なお、固定部材の基部２３の形状は前記の
ような円柱状に限られるものではなく、多角形状であっ
てもよい。The fixing member 20 shown in FIG.
The lower part (in the figure) is formed as a clamping type having a hexagonal groove 22 that fits in the hexagonal cross section of the lag screw 10, and the base part 23 (the upper part in the figure) has a columnar shape. In this case, a fitting hole 24 is formed. The shape of the base 23 of the fixing member is not limited to the columnar shape as described above, but may be a polygonal shape.
【００１１】図４に示す締結部材３０は、外周にねじ部
を有する押圧部３１と円板状の蓋部３２とから構成され
ている。The fastening member 30 shown in FIG. 4 includes a pressing portion 31 having a screw portion on the outer periphery and a disk-shaped lid portion 32.
【００１２】図５は、インプラント用ネイル１を骨内に
挿入し、ラグスクリュー１０をねじ込んで、遠位スクリ
ュー２，２をねじ込んだ状態において、固定部材２０を
挿入する状態を示している。該固定部材２０は、ドライ
バー３により保持されつつ、固定部材２０の頭部２１の
六角溝２２が、図６に示すように、ラグスクリュー１０
の六角状胴部１２に嵌合するように調節しながら挿入さ
れる。このようにラグスクリュー１０の六角状胴部１２
に固定部材２０の頭部２１の六角溝２２に嵌合させれ
ば、ラグスクリュー１０の回転が固定部材２０により規
制される。図７は、前述のように固定部材２０を挿入し
た後、ドライバー３を取除き、締結部材３０をねじ込も
うとする状態を示している。該締結部材３０は、これを
ねじ込んでいけば、図８に示すように、押圧部３１が固
定部材２０の基部２３の頂部２５に当接し、さらに締結
部材３０をねじ込んでいけば固定部材２０がラグスクリ
ュー１０を押圧し、図９及び図１０に示すように、イン
プラント用ネイル１と一体的に固定される。FIG. 5 shows a state where the fixing member 20 is inserted in a state where the nail 1 for implant is inserted into the bone, the lag screw 10 is screwed, and the distal screws 2 and 2 are screwed. While the fixing member 20 is held by the driver 3, the hexagonal groove 22 of the head 21 of the fixing member 20 is, as shown in FIG.
While being adjusted so as to be fitted to the hexagonal body portion 12. Thus, the hexagonal body 12 of the lag screw 10
If the lag screw 10 is fitted into the hexagonal groove 22 of the head 21 of the fixing member 20, the rotation of the lag screw 10 is regulated by the fixing member 20. FIG. 7 shows a state where the driver 3 is removed and the fastening member 30 is about to be screwed in after the fixing member 20 is inserted as described above. When the fastening member 30 is screwed in, as shown in FIG. 8, the pressing portion 31 abuts on the top 25 of the base 23 of the fixing member 20, and when the fastening member 30 is further screwed in, the fixing member 20 is The lag screw 10 is pressed, and is fixed integrally with the implant nail 1 as shown in FIGS. 9 and 10.
【００１３】このように構成することにより、固定部材
２０により、ラグスクリュー１０の回転が規制されるの
で回旋が完全に防止でき、締結部材３０をねじ込んで固
定部材２０によりラグスクリュー１０を押圧すれば完全
に固定され、ラグスクリューが進退方向にずれ動くこと
がない。なお、締結部材３０を緩めれば、ラグスクリュ
ー１０の進退方向へは、ずれ動かすことが可能となる
が、ラグスクリュー１０の回転は規制されので、回旋は
防止できる。With such a configuration, the rotation of the lag screw 10 is restricted by the fixing member 20, so that the rotation can be completely prevented. If the fastening member 30 is screwed in and the lag screw 10 is pressed by the fixing member 20, It is completely fixed, and the lag screw does not move in the reciprocating direction. In addition, if the fastening member 30 is loosened, the lag screw 10 can be shifted in the advancing and retreating direction. However, since the rotation of the lag screw 10 is restricted, rotation can be prevented.
【００１４】図１１は、ラグスクリューの第２の実施例
を示すものであって、図におけるラグスクリュー１０´
は、その胴部１２における先端部側に鍔状のストッパー
１５を形成したものである。図は、インプラント用ネイ
ル１を骨内に挿入し、ラグスクリュー１０´をねじ込ん
で、遠位スクリュー２，２をねじ込んだ後、固定部材２
０を挿入して、締結部材３０をねじ込んだ状態を示して
いる。そして、締結部材３０を若干緩めて、ラグスクリ
ュー１０´が図において左下方にずれ下がり可能にした
場合でも、当該ラグスクリュー１０´に形成したストッ
パー１５により、そのストッパー１５を形成した位置以
上はずれ下がらない。したがって、このようにストッパ
ー１５を形成したことにより、ラグスクリュー１０´を
ずれ動き可能にした場合でも短縮転位を防止することが
可能となる。FIG. 11 shows a second embodiment of the lag screw.
Has a flange-shaped stopper 15 formed on the tip end side of the body 12. The figure shows that the nail for implant 1 is inserted into the bone, the lag screw 10 ′ is screwed in, and the distal screws 2 and 2 are screwed in.
0 is inserted and the fastening member 30 is screwed. Then, even when the fastening member 30 is slightly loosened to allow the lag screw 10 ′ to be displaced downward and to the left in the drawing, the stopper 15 formed on the lag screw 10 ′ is displaced beyond the position where the stopper 15 is formed. Absent. Therefore, by forming the stopper 15 in this way, even when the lag screw 10 ′ is allowed to shift, it is possible to prevent shortened dislocation.
【００１５】なお、本発明は、前記の実施例に限定され
るものではなく、本発明の精神を逸脱しない範囲の広範
な実施例を含むものである。The present invention is not limited to the above embodiments, but includes a wide range of embodiments without departing from the spirit of the present invention.
【００１６】[0016]
【発明の効果】本発明に係るインプラント用ネイルに用
いるラグスクリューは、ラグスクリューの胴部断面を多
角形状に構成し、当該ラグスクリューと、前記ラグスク
リューの多角形状に嵌合する嵌合頭部を有する固定部材
と、該固定部材を押圧する締結部材とにより、インプラ
ント用ネイルにおけるラグスクリュー挿通穴に前記ラグ
スクリューを挿通し、該ラグスクリューの胴部に固定部
材を嵌合させ、前記締結部材を締付けることにより該固
定部材を押圧してラグスクリューを固定できる構造にし
たため、ラグスクリューは、該ラグスクリューの多角形
状に嵌合する嵌合頭部を有する固定部材により嵌合され
るので、ラグスクリューの回転を規制でき、回旋による
骨接合のトラブルを完全に防止できる。また、ラグスク
リューと前記の固定部材は面接触であるので、ラグスク
リューが進退方向へずれ動くことを規制して短縮転位を
防止できる。しかも、締結部材を緩めてラグスクリュー
が進退方向へずれ動くように調節した場合でも回旋に対
しては十分に防止し得るものである。The lag screw used for the nail for implant according to the present invention has a body section of the lag screw formed in a polygonal shape, and the lag screw and a fitting head fitted in the polygonal shape of the lag screw. A lag screw is inserted into a lag screw insertion hole in the nail for implant by using a fixing member having a fixing member and a fastening member that presses the fixing member, and the fixing member is fitted to the body of the lag screw, and the fastening member Since the lag screw is fixed by pressing the fixing member by tightening the lag screw, the lag screw is fitted by a fixing member having a fitting head that fits into the polygonal shape of the lag screw, The rotation of the screw can be regulated, and the problem of osteosynthesis due to rotation can be completely prevented. Further, since the lag screw and the fixing member are in surface contact with each other, it is possible to prevent the lag screw from moving in the reciprocating direction and to prevent shortened dislocation. In addition, even when the lag screw is adjusted so as to move in the reciprocating direction by loosening the fastening member, the rotation can be sufficiently prevented.
【図１】本発明に係るラグスクリューの斜視図である。FIG. 1 is a perspective view of a lag screw according to the present invention.
【図２】前記ラグスクリューのＡ−Ａ線断面図である。FIG. 2 is a sectional view of the lag screw taken along line AA.
【図３】固定部材の斜視図である。FIG. 3 is a perspective view of a fixing member.
【図４】締結部材の斜視図である。FIG. 4 is a perspective view of a fastening member.
【図５】ラグスクリューに固定部材を嵌め込む状態を示
す概略図である。FIG. 5 is a schematic view showing a state in which a fixing member is fitted into a lag screw.
【図６】ラグスクリューと固定部材の嵌合状態を示す斜
視図である。FIG. 6 is a perspective view showing a fitting state of a lag screw and a fixing member.
【図７】固定部材を押圧する締結部材をねじ込む状態を
示す概略図である。FIG. 7 is a schematic diagram showing a state in which a fastening member that presses the fixing member is screwed.
【図８】ラグスクリューに固定部材を嵌め込み、締結部
材をねじ込んだ状態を示す一部切欠斜視図である。FIG. 8 is a partially cutaway perspective view showing a state in which a fixing member is fitted into a lag screw and a fastening member is screwed.
【図９】ラグスクリューに固定部材を嵌め込み、締結部
材をねじ込んだ状態を示すインプラント用ネイルの頭部
の概略図である。FIG. 9 is a schematic view of a head of an implant nail showing a state in which a fixing member is fitted into a lag screw and a fastening member is screwed.
【図１０】ラグスクリューに固定部材を嵌め込み、締結
部材をねじ込んだ状態を示すインプラント用ネイルの別
方向から見た頭部の概略図である。FIG. 10 is a schematic view of the head of the nail for an implant as viewed from another direction, showing a state in which a fixing member is fitted into a lag screw and a fastening member is screwed.
【図１１】第２の実施例であって、ラグスクリューに固
定部材を嵌め込み、締結部材をねじ込んだ状態を示す一
部切欠斜視図である。FIG. 11 is a partially cutaway perspective view showing a state where a fixing member is fitted into a lag screw and a fastening member is screwed in the second embodiment.
【図１２】従来のラグスクリューの斜視図である。FIG. 12 is a perspective view of a conventional lag screw.
【図１３】従来のインプラント用ネイルに用いるラグス
クリューの固定構造を示す概略図である。FIG. 13 is a schematic diagram showing a fixing structure of a lag screw used for a conventional nail for an implant.
１０……ラグスクリュー １０´…ラグスクリュー １１……ラグスクリューのねじ部を有する先端部 １２……ラグスクリューの六角状胴部 １３……ラグスクリューの基部 １４……ラグスクリューのガイドワイヤー挿通用貫通孔 １５……ラグスクリューに形成したストッパー ２０……固定部材 ２１……固定部材の頭部 ２２……固定部材の六角溝 ２３……固定部材の円柱状基部 ２４……固定部材のドライバー嵌合用嵌合穴 ２５……固定部材の頂部 ３０……締結部材 ３１……締結部材のねじ部を有する押圧部 ３２……締結部材の円板状蓋部 １…インプラント用ネイル ２…遠位スクリュー ３…ドライバー ４…従来のラグスクリュー ５…従来のラグスクリューの胴部 ６…従来のラグスクリューの胴部の溝 ７…従来の固定ロッド ８…従来の固定ロッドの先端部 Reference Signs List 10 lag screw 10 'lag screw 11 tip end having lag screw thread 12 hexagonal trunk portion of lag screw 13 base of lag screw Hole 15: stopper formed on lag screw 20: fixing member 21: head of fixing member 22: hexagonal groove of fixing member 23: cylindrical base of fixing member 24: screw-in fitting of fixing member Fitting hole 25 Top of fixing member 30 Fastening member 31 Pressing portion having screw portion of fastening member 32 Disc-shaped lid of fastening member 1 Nail for implant 2 Distal screw 3 Driver 4 ... conventional lag screw 5 ... conventional lag screw body 6 ... conventional lag screw body groove 7 ... conventional fixed rod 8 ... conventional solid Tip of constant rod
Claims (1)
グスクリューの多角形状に嵌合する嵌合頭部を有する固
定部材と、該固定部材を押圧する締結部材とにより、イ
ンプラント用ネイルにおけるラグスクリュー挿通穴に前
記ラグスクリューを挿通し、該ラグスクリューの胴部に
固定部材を嵌合させ、前記締結部材を締付けることによ
り該固定部材を押圧してラグスクリューを固定したこと
を特徴とするインプラント用ネイルに用いるラグスクリ
ューの固定構造。1. A lag screw in an implant nail comprising a lag screw having a polygonal cross section, a fixing member having a fitting head fitted into the polygonal shape of the lag screw, and a fastening member pressing the fixing member. The lag screw is inserted into the insertion hole, a fixing member is fitted to the body of the lag screw, and the lag screw is fixed by pressing the fixing member by tightening the fastening member. A lag screw fixing structure used for nails.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10221630A JP2973316B1 (en) | 1998-08-05 | 1998-08-05 | Fixing structure of lag screw used for nail for implant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10221630A JP2973316B1 (en) | 1998-08-05 | 1998-08-05 | Fixing structure of lag screw used for nail for implant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2973316B1 true JP2973316B1 (en) | 1999-11-08 |
| JP2000051224A JP2000051224A (en) | 2000-02-22 |
Family
ID=16769786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10221630A Expired - Lifetime JP2973316B1 (en) | 1998-08-05 | 1998-08-05 | Fixing structure of lag screw used for nail for implant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2973316B1 (en) |
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|---|---|---|---|---|
| EP1759648A3 (en) * | 2005-08-31 | 2009-11-25 | DePuy Products, Inc. | Intramedullary nail assembly |
| WO2016030360A1 (en) * | 2014-08-26 | 2016-03-03 | Ot Medizintechnik Gmbh | Locking intramedullary nail for introduction into the medullary space of a tubular bone |
| US10492803B2 (en) | 2016-09-22 | 2019-12-03 | Globus Medical, Inc. | Systems and methods for intramedullary nail implantation |
| US11083503B2 (en) | 2016-09-22 | 2021-08-10 | Globus Medical, Inc. | Systems and methods for intramedullary nail implantation |
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|---|---|---|---|---|
| US6835197B2 (en) * | 2001-10-17 | 2004-12-28 | Christoph Andreas Roth | Bone fixation system |
| FR2841460B1 (en) * | 2002-06-28 | 2005-04-01 | Sanortho | EPIPHYSARY OSTEOSYNTHESIS SCREW IN TWO PARTS, IN PARTICULAR FOR NAILS OR PLATES, AND OSTEOSYNTHESIS DEVICE INCORPORATING IT |
| WO2004078049A1 (en) | 2003-03-07 | 2004-09-16 | Synthes Ag Chur | Locking screw for an intramedullary nail |
| JP4417328B2 (en) | 2003-06-12 | 2010-02-17 | ジンテーズ ゲゼルシャフト ミト ベシュレンクテル ハフツング | Surgical nail |
| ATE375125T1 (en) | 2003-06-12 | 2007-10-15 | Synthes Gmbh | SURGICAL NAIL |
| DE20309399U1 (en) * | 2003-06-18 | 2003-08-28 | Stryker Trauma Gmbh | Bone nail, especially proximal femoral nail |
| KR101004528B1 (en) | 2003-07-30 | 2010-12-31 | 신세스 게엠바하 | Surgical nail |
| ATE418924T1 (en) | 2003-08-29 | 2009-01-15 | Synthes Gmbh | INTEGRAL NAIL |
| ATE540628T1 (en) * | 2003-12-01 | 2012-01-15 | Smith & Nephew Inc | HUMERAL NAIL WITH INSERT FOR FIXING A SCREW |
| US7892234B2 (en) | 2004-06-22 | 2011-02-22 | Synthes Usa, Llc | Intramedullary nail |
| WO2008001324A2 (en) * | 2006-06-30 | 2008-01-03 | O.S.P. Ortho Service Provider S.R.L. | Locking device for intramedullary nails and intramedullary nail including such device |
| WO2008147975A1 (en) | 2007-05-25 | 2008-12-04 | Zimmer, Gmbh | Reinforced intramedullary nail |
| EP2349040B9 (en) | 2008-10-15 | 2014-12-17 | Zimmer GmbH | Intramedullary nail |
| CN102470005B (en) * | 2009-07-01 | 2014-11-05 | 新特斯有限责任公司 | Intramedullary nail and protruding screw locking mechanism |
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1998
- 1998-08-05 JP JP10221630A patent/JP2973316B1/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1759648A3 (en) * | 2005-08-31 | 2009-11-25 | DePuy Products, Inc. | Intramedullary nail assembly |
| WO2016030360A1 (en) * | 2014-08-26 | 2016-03-03 | Ot Medizintechnik Gmbh | Locking intramedullary nail for introduction into the medullary space of a tubular bone |
| EP3626191A1 (en) * | 2014-08-26 | 2020-03-25 | OT Medizintechnik GmbH | Intramedullary locking nail for insertion into the bone marrow area of a tubular bone |
| US10492803B2 (en) | 2016-09-22 | 2019-12-03 | Globus Medical, Inc. | Systems and methods for intramedullary nail implantation |
| US11083503B2 (en) | 2016-09-22 | 2021-08-10 | Globus Medical, Inc. | Systems and methods for intramedullary nail implantation |
| US11490905B2 (en) | 2016-09-22 | 2022-11-08 | Globus Medical, Inc. | Systems and methods for intramedullary nail implantation |
| US11633219B2 (en) | 2019-06-26 | 2023-04-25 | Globus Medical, Inc. | Fenestrated pedicle nail |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000051224A (en) | 2000-02-22 |
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