JP4287022B2 - Screw member for osteosynthesis device and osteosynthesis device - Google Patents

Screw member for osteosynthesis device and osteosynthesis device Download PDF

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JP4287022B2
JP4287022B2 JP2000123528A JP2000123528A JP4287022B2 JP 4287022 B2 JP4287022 B2 JP 4287022B2 JP 2000123528 A JP2000123528 A JP 2000123528A JP 2000123528 A JP2000123528 A JP 2000123528A JP 4287022 B2 JP4287022 B2 JP 4287022B2
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osteosynthesis device
screw
screw member
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holes
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JP2001304223A (en
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喜久二 堀内
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株式会社ホリックス
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    • 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
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8605—Heads, i.e. proximal ends projecting from bone
    • 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
    • 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
    • A61B17/746—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 a plate opposite the femoral head
    • 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
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/842—Flexible wires, bands or straps

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
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  • Life Sciences & Earth Sciences (AREA)
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Description

【０００１】
【発明が属する技術分野】
本発明は、例えば、大腿骨の頸部骨折時に骨折した部分を接合するために使用される骨接合装置において使用される骨接合装置用ねじ部材と骨接合装置に係り、特に、骨材接合装置によって骨を接合した後、骨同士或いは骨と骨接合装置とを紐体によって縛り付ける際、該紐体が通る孔をその基部に設けることにより、別途金具を要することなく簡単な作業で縛り付け作業を行うことができるように工夫したものに関する。
【０００２】
【従来の技術】
例えば、骨接合装置としては、実用新案登録第３０４４９２３号に係る登録実用新案公報に開示されているものがある。
尚、これは本件特許出願人によるものである。
その構成を図８に示す。図８は大腿骨１０１の頸部１０１ａに骨折が発生し、それを接合するための骨接合装置の構成を示す図であり、図８中骨折部を符号Ａで示す。
【０００３】
まず、チューブプレート１０３があり、このチューブプレート１０３は、大腿骨１０１の側部に沿った状態で配置されている。上記チューブプレート１０３の図８中上端には、半球状の受部１０５が形成されている。又、この半球状の受部１０５には貫通孔１０７が形成されている。
【０００４】
上記受部１０５の内側（大腿骨１０１側に形成される孔内）には、チューブ１０９が配置されている。このチューブ１０９は、半球状の頭部１１１を備えていて、該頭部１１１を介して上記受部１０５に移動可能に係合する。上記チューブ１０９は中空部１１３を備えていると共に、頭部１１１の内周側には雌ねじ部１１５が形成されている。上記受部１０５の表面は、梨地状（ザラザラした状態）をなしていると共に、上記チューブ１０９の頭部１１１の表面も同様に梨地状をなしている。それによって、大きな摩擦力を得て固定力を高めるようになっている。
【０００５】
又、ラグスクリュ１１７があり、このラグスクリュ１１７は、横断面形状が六角形の軸部１１９を備えていて、該軸部１１９の先端部には雄ねじ部１２１が形成されている。又、軸部１１９の基部側の内周面には、雌ねじ部１２３が形成されている。上記ラグスクリュ１１７は、大腿骨１０１の頸部１０１ａから骨頭１０１ｂにかけて予め形成された孔内に挿入され、且つ、骨頭１０１ｂ側の孔に形成された雌ねじ部に螺合・接合されている。
【０００６】
又、チューブプレート１０３の受部１０５の外側には、セットスクリュ１２５が配置されていて、このセットスクリュ１２５には、チューブ１０９の雌ねじ部１１１に螺合される雄ねじ部１２７が形成されている。又、このセットスクリュ１２５の外側には、コンプレッションスクリュ１２９が配置されていて、このコンプレッションスクリュ１２９には、ラグスクリュ１１７側の雌ねじ部１２３に螺合する雄ねじ部１３１が形成されている。
【０００７】
又、チューブプレート１０３には、固定ねじとしてのコーティカルスクリュ１３３を通すための複数個の貫通孔１３５が形成されている。又、チューブプレート１０３には、固定ねじとしてのキャニレットスクリュ１３７を通すための貫通孔１３９が形成されている。
【０００８】
上記構成によると、例えば、大腿骨１０１の頸部１０１ａに骨折が発生した場合には、大腿骨１０１の頸部１０１ａから骨頭１０１ｂにかけて所定深さの孔を穿孔し、骨頭１０１ｂ側において雌ねじ部のねじ切り加工を施す。次に、ラグスクリュ１１７をその雌ねじ部に螺合させていくと共に、チューブ１０９を挿入・配置する。その際、ラグスクリュ１１７の基部は上記チューブ１０９内の中空部１１３内に挿入される。
【０００９】
又、大腿骨１０１の側部に、チューブプレート１０３を沿わせるように配置する。そして、セットスクリュ１２５をチューブプレート１０３の受部１０５の貫通孔１０７を通してチューブ１０９の頭部１１１の雌ねじ部１１５に螺合させる。それによって、チューブ１０９をチューブプレート１０３に固定する。次に、コンプレッションスクリュ１２９をセットスクリュ１２５内を通して、ラグスクリュ１１７の基部の雌ねじ部１２３に螺合させていく。それによって、ラグスクリュ１１７、ひいては骨頭１０１ｂを大腿骨１０１の頸部１０１ａ側に引き寄せて、骨折部Ａに圧迫を与える。後は、チューブプレート１０３の外側から複数本のコーティカルスクリュ１３３、キャニレットスクリュ１３７を大腿骨１０１にねじ込むことにより全体を固定する。
【００１０】
ところで、上記したような骨接合装置を使用して大腿骨１０１の骨折部を固定する際、その接合状態をさらに強固なものとするべくワイヤ１４７による縛り付け作業が施される。すなわち、ワイヤ１４７を使用して骨接合装置を大腿骨１０１に縛り付けて固定するものである。
その際、図８に示した骨接合装置の場合には、ワイヤ１４７を接合装置側に固定するための構成が設けられていないために、図中仮装線で示すような金具１４１をチューブプレート１０３に取り付けて、この金具１４１を使用してワイヤ１４７による締結を行う。
【００１１】
すなわち、上記金具１４１にはワイヤ１４７が通る孔１４３、１４５が形成されているので、ワイヤをこれら孔１４３、１４５を通しながら、チューブプレート１０３と大腿骨１０１の外周に巻回させていき、縛り付けるものである。
尚、図ではそのような金具１４１を一箇所にのみ示したが、これを複数箇所に設けて縛り付けるものである。
【００１２】
【発明が解決しようとする課題】
上記従来の構成によると次のような問題があった。
まず、ワイヤ１４７による縛り付け作業が面倒であるという問題があった。これは、ワイヤ１４７による縛り付けを行う為に金具１４１を別途用意して取り付ける必要があるからである。
又、本来の接合装置用の部品以外に金具１４１を必要とするため、部品点数が増大してその管理が面倒であるという問題があった。
【００１３】
本発明はこのような点に基づいてなされたものでその目的とするところは、ワイヤ等の紐体を使用しての縛り付け作業を容易にすることが可能な骨接合装置用ねじ部材と骨接合装置を提供することにある。
【００１４】
上記目的を達成するべく本願発明の請求項１による骨接合装置用ねじ部材は、ねじ部を備えた軸部と、上記軸部の基端に設けられた頭部と、を具備し、骨折した骨を接合する骨接合装置にあって使用される骨接合装置用ねじ部材において、上記頭部の反軸部側に突出する突出部を設け、該突出部に締結用紐体を通すための貫通した孔を設け、上記貫通した孔は上記突出部の軸方向に沿って異なる位置に相互に直交する方向に指向した状態で夫々設けられていることを特徴とするものである。
又、請求項２による骨接合装置用ねじ部材は、 請求項１記載の骨接合装置用ねじ部材において、上記貫通した孔は上記突出部の軸方向に沿って異なる位置に２個ずつ設けられていることを特徴とするものである。
又、請求項３による骨接合装置は、請求項１又は請求項２記載の骨接合装置用ねじ部材と、上記骨接合装置用ねじ部材を使用して骨を接合した後、上記骨接合装置用ねじ部材の突出部に設けられた孔に通されて骨と骨接合装置用ねじ部材とを縛り付けていく紐体と、を具備したことを特徴とするものである。
又、請求項４による骨接合装置は、請求項３記載の骨接合装置において、紐体によって縛り付けた後、孔部をかしめることにより、紐体の孔からの不用意な抜けを防止するようにしたことを特徴とするものである。
【００１５】
すなわち、部材を接合するための部材接合装置においては、各種の部材接合装置用ねじ部材が使用される。これらの部材接合装置用ねじ部材によって部材と部材を接合したり、部材接合装置を部材に取り付けたりするわけである。そこで、これら各種の部材接合装置用ねじ部材の基部に縛り付け用の紐体が通る孔を設けておき、紐体によって縛り付ける際にその孔を通しながら行うことを可能にしたものである。それによって、従来のように縛り付け用の金具を別途必要とすることもなく、部品点数を減少させることができると共に、金具の取付作業が不要となるので、それだけ接合作業に要する時間を短縮することができる。
孔としては異なる方向に複数個設けることが考えられ、例えば、相互に直交する方向に所定個数ずつ設けることが考えられる。
又、請求項５は同趣旨の内容を方法としてクレームしたものであり、又、請求項６は孔を利用して紐体により縛り付けた後孔部をかしめることにより紐体の孔からの不用意な抜けを防止することをクレームしたものである。
【００１６】
【発明の実施の形態】
以下、図１乃至図４を参照して本発明の第１の実施の形態を説明する。図１は部材接合装置としての骨接合装置に使用される部材接合装置用ねじ部材１の全体を示す側面図であり、図２は図１のＩＩ−ＩＩ矢視図である。
尚、上記部材接合装置用ねじ部材１は、例えば、従来技術の説明で使用した図８に図示されているコンプレッションスクリュ１２９やコーティカルスクリュ１３３やキャニレットスクリュ１３７等として使用されるものである。
【００１７】
部材接合装置用ねじ部材１は、軸部３と、この軸部３の基部に設けられた頭部５とから構成されている。上記軸部３には所定のねじ部７が形成されている。又、頭部５には、その横断面形状が四角形をなす突出部９が突設されていて、この突出部９には２個の孔１１、１３が穿孔されている。これら孔１１、１３は部材接合装置用ねじ部材１の軸方向に対して直交する方向に形成されている。又、これら孔１１、１３はワイヤ２１（図３及び図４に示す）によって縛り付ける際に、該ワイヤ２１を通すためのものである。
【００１８】
そこで、実際の使用例を図３及び図４を参照して説明する。図３は従来例の説明で使用した図８の一部を示す図で、コーティカルスクリュとして本実施の形態による部材接合装置用ねじ部材１を使用したものである。部材接合装置用ねじ部材１の頭部５の突出部９に設けられた孔１１、１３内にワイヤ２１を通しながら、チューブプレート１０３と大腿骨１０１とを強固に縛り付けていくものである。又、ワイヤ２１による縛り付けが完了した後、図示しない治具によって孔１１、１３をかしめる。それによって、ワイヤ２１の孔１１、１３からの不用意な抜けを防止するものである。
【００１９】
又、図４に示すものは、大腿骨１０１の一部に骨折が発生した場合に、これを部材接合装置用ねじ部材１によって座金２３を介して螺合・接合し、その後、ワイヤ２１を使用して縛り付けていくものである。この場合にも、部材接合装置用ねじ部材１の頭部５の突出部９に設けられた孔１１、１３内にワイヤ２１を通しながら、骨折部と大腿骨１０１とを強固に縛り付けていくものである。又、ワイヤ２１による縛り付けが完了した後、図示しない治具によって孔１１、１３をかしめる。それによって、ワイヤ２１の孔１１、１３からの不用意な抜けを防止するものである。
【００２０】
以上本実施の形態によると次のような効果を奏することができる。
まず、骨接合装置を使用して骨折部を接合した後にワイヤ２１によって縛り付ける際、従来のように、別途金具を用意して固定する必要はなく、部材接合装置用ねじ部材１の頭部５に設けられた突出部９の孔１１、１３をそのまま使用して行うことができる。よって、部品点数を減少させることができると共に、接合作業を容易化して該作業に要する時間を短縮させることが可能になる。
又、ワイヤ２１によって縛り付けた後、孔１１、１３をかしめるようにしているので、ワイヤ２１の孔１１、１３からの不用意な抜けを防止することが可能になる。
【００２１】
次に、図５乃至図７を参照して本発明の第２の実施の形態を説明する。この第２の実施の形態の場合には、前記第１の実施の形態における突出部９を軸方向にさらに延長して、孔９、１１と直交する方向に別の孔１５、１７を設けたものである。
その他の構成は前記第１の実施の形態の場合と同じであるので同一部分には同一符号を付して示しその説明は省略する。
【００２２】
上記構成によると前記第１の実施の形態と同様の効果を奏することができることはもとより、孔１１、１３に対して直交する別の孔１５、１７を設けているので、ワイヤ２１による縛り付け作業がよりやり易くなるものである。又、１個の部材接合装置用ねじ部材に異なる方向に指向した孔を複数個設けることにより、他のねじ部材については孔を備えていない普通のねじ部材とすることも可能となる。
【００２３】
尚、本発明は前記第１及び第２の実施の形態に限定されるものではない。
まず、骨接合装置用ねじ部材の構成については図示したものに限定されず様々な形態が考えられる。
又、孔の個数、方向等についてもこれを特に限定するものではない。
【００２４】
【発明の効果】
以上詳述したように本発明による部材接合装置用ねじ部材によると、部材接合装置を使用して部材を接合した後に紐体によって縛り付ける際、従来のように、別途金具を用意して固定する必要はなく、ねじ部材の頭部に設けられた孔をそのまま使用して行うことができる。よって、部品点数を減少させることができると共に、接合作業を容易化して該作業に要する時間を短縮させることが可能になる。
又、本発明による部材接合方法によると、簡単な作業によって部材同士を接合して紐体により縛り付けることができる。又、縛り付けた後孔部をかしめることにより紐体の孔からの不用意な抜けを防止することができる。
【図面の簡単な説明】
【図１】本発明の第１の実施の形態を示す図で、部材接合装置用ねじ部材の全体の構成を示す側面図である。
【図２】本発明の第１の実施の形態を示す図で、図１のＩＩ−ＩＩ矢視図である。
【図３】本発明の第１の実施の形態を示す図で、部材接合装置用ねじ部材を実際に使用した状態を示す図である。
【図４】本発明の第１の実施の形態を示す図で、部材接合装置用ねじ部材を実際に使用した状態を示す図である。
【図５】本発明の第２の実施の形態を示す図で、部材接合装置用ねじ部材の全体の構成を示す側面図である。
【図６】本発明の第１の実施の形態を示す図で、図１のＩＶ−ＩＶ矢視図である。
【図７】本発明の第１の実施の形態を示す図で、図１のＶ−Ｖ矢視図である。
【図８】従来例を示す図で、部材接合装置によって骨折した骨を接合しようとする状態を示す図である。
【符号の説明】
１ 部材接合装置用ねじ部材
５ 頭部
９ 突出部
１１ 孔
１３ 孔
１５ 孔
１７ 孔
２１ ワイヤ（紐体）
２３ 座金[0001]
[Technical field to which the invention belongs]
The present invention may, for example, relates to a screw member and a bone joining device for osteosynthesis devices used in osteosynthesis device used for joining fractured portion when neck fracture of the femur, in particular, the bone material bonding device After the bones are joined together, when the bones or the bone and the bone joining device are tied together by the string body, a hole through which the string body passes is provided at the base portion, so that the binding work can be done with a simple work without requiring a separate metal fitting. It relates to things devised so that it can be done.
[0002]
[Prior art]
For example, as an osteosynthesis device, there is one disclosed in a registered utility model gazette according to Utility Model Registration No. 3044923.
This is due to the applicant of the present patent.
The configuration is shown in FIG. FIG. 8 is a diagram showing a configuration of an osteosynthesis device for joining a fracture in the neck 101a of the femur 101, and the fracture part in FIG.
[0003]
First, there is a tube plate 103, and this tube plate 103 is arranged along the side of the femur 101. A hemispherical receiving portion 105 is formed at the upper end of the tube plate 103 in FIG. In addition, a through hole 107 is formed in the hemispherical receiving portion 105.
[0004]
A tube 109 is disposed inside the receiving portion 105 (in the hole formed on the femur 101 side). The tube 109 has a hemispherical head 111 and is movably engaged with the receiving portion 105 via the head 111. The tube 109 includes a hollow portion 113, and a female screw portion 115 is formed on the inner peripheral side of the head portion 111. The surface of the receiving part 105 has a satin finish (a rough state), and the surface of the head 111 of the tube 109 has a satin finish as well. As a result, a large frictional force is obtained to increase the fixing force.
[0005]
Further, there is a lug screw 117, and this lug screw 117 is provided with a shaft portion 119 having a hexagonal cross section, and a male screw portion 121 is formed at the tip of the shaft portion 119. A female screw portion 123 is formed on the inner peripheral surface of the base portion side of the shaft portion 119. The lag screw 117 is inserted into a hole formed in advance from the neck portion 101a of the femur 101 to the bone head 101b, and is screwed and joined to a female screw portion formed in the hole on the bone head 101b side.
[0006]
A set screw 125 is disposed outside the receiving portion 105 of the tube plate 103, and a male screw portion 127 that is screwed into the female screw portion 111 of the tube 109 is formed on the set screw 125. A compression screw 129 is disposed outside the set screw 125, and a male screw portion 131 is formed on the compression screw 129. The male screw portion 131 is screwed into the female screw portion 123 on the lug screw 117 side.
[0007]
The tube plate 103 is formed with a plurality of through-holes 135 through which a coating screw 133 as a fixing screw is passed. Further, the tube plate 103 is formed with a through-hole 139 for passing a canret screw 137 as a fixing screw.
[0008]
According to the above configuration, for example, when a fracture occurs in the neck portion 101a of the femur 101, a hole having a predetermined depth is drilled from the neck portion 101a of the femur 101 to the head 101b, and the female screw portion of the femoral head 101b is formed. Apply threading. Next, the lug screw 117 is screwed into the female thread portion, and the tube 109 is inserted and disposed. At that time, the base portion of the lug screw 117 is inserted into the hollow portion 113 in the tube 109.
[0009]
Further, the tube plate 103 is arranged along the side of the femur 101. Then, the set screw 125 is screwed into the female screw portion 115 of the head portion 111 of the tube 109 through the through hole 107 of the receiving portion 105 of the tube plate 103. Thereby, the tube 109 is fixed to the tube plate 103. Next, the compression screw 129 is threaded into the female screw portion 123 at the base of the lug screw 117 through the set screw 125. As a result, the lag screw 117 and eventually the bone head 101b are pulled toward the neck 101a side of the femur 101, and compression is applied to the fracture portion A. After that, the whole is fixed by screwing a plurality of cortical screws 133 and canretette screws 137 into the femur 101 from the outside of the tube plate 103.
[0010]
By the way, when the fracture portion of the femur 101 is fixed using the above-described osteosynthesis device, a binding operation with the wire 147 is performed in order to further strengthen the joint state. That is, the wire 147 is used to bind and fix the osteosynthesis device to the femur 101.
At that time, in the case of the osteosynthesis device shown in FIG. 8, since the structure for fixing the wire 147 to the junction device side is not provided, the metal fitting 141 as shown by the temporary wire in the drawing is attached to the tube plate 103. And using the metal fitting 141, the wire 147 is used for fastening.
[0011]
That is, since holes 143 and 145 through which the wire 147 passes are formed in the metal fitting 141, the wires are wound around the outer periphery of the tube plate 103 and the femur 101 while passing through the holes 143 and 145, and are bound. Is.
In the figure, such a metal fitting 141 is shown only at one place, but this is provided at a plurality of places and tied.
[0012]
[Problems to be solved by the invention]
The conventional configuration has the following problems.
First, there is a problem that the work of binding with the wire 147 is troublesome. This is because it is necessary to separately prepare and attach the metal fitting 141 in order to bind with the wire 147.
Moreover, since the metal fitting 141 is required in addition to the original parts for the joining apparatus, there is a problem that the number of parts increases and the management thereof is troublesome.
[0013]
The present invention has as its object in which has been made based on such points, easily can to bone joining device screw member and the bone joining tied Working with cords of wire or the like To provide an apparatus .
[0014]
In order to achieve the above object, a screw member for an osteosynthesis device according to claim 1 of the present invention comprises a shaft portion provided with a screw portion and a head portion provided at a proximal end of the shaft portion, and has fractured. In the screw member for an osteosynthesis device used in an osteosynthesis device for joining bones, a projecting portion projecting to the opposite side of the head is provided, and a penetration for passing a fastening string through the projecting portion The through holes are respectively provided in different states along the axial direction of the projecting portions and oriented in directions orthogonal to each other .
The screw member for an osteosynthesis device according to claim 2 is the screw member for an osteosynthesis device according to claim 1, wherein the two through holes are provided at two different positions along the axial direction of the protruding portion. it is characterized in that there.
According to a third aspect of the present invention, there is provided an osteosynthesis device according to the first or second aspect, wherein the osteosynthesis device screw member and the osteosynthesis device screw member are used to join the bone, and then the osteosynthesis device. And a string member that is passed through a hole provided in the protruding portion of the screw member and binds the bone and the screw member for an osteosynthesis device.
According to a fourth aspect of the present invention, there is provided an osteosynthesis apparatus according to the third aspect of the present invention, wherein after the cord is bound by the string body, the hole portion is caulked to prevent inadvertent removal from the hole of the string body. it is characterized in that the the.
[0015]
That is, in the member bonding apparatus for bonding members, various member bonding apparatus screw members are used. A member and a member are joined by these member joining device screw members, or a member joining device is attached to a member. Therefore, a hole through which a string member for binding is passed is provided at the base of these various member joining device screw members, and it is possible to perform the process while passing through the hole when binding with the string member. As a result, it is possible to reduce the number of parts and eliminate the need for attaching the metal fittings without requiring a separate metal fitting for tying as in the prior art, thereby reducing the time required for the joining work. Can do.
A plurality of holes may be provided in different directions. For example, a predetermined number of holes may be provided in directions orthogonal to each other.
In addition, claim 5 claims the content of the same meaning as a method, and claim 6 claims that the hole from the hole of the string body is caulked by caulking the rear hole portion that is bound by the string body using the hole. It claims to prevent prepared omissions.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a side view showing the entirety of a screw member 1 for a member joining device used in a bone joining device as a member joining device, and FIG. 2 is a view taken in the direction of arrows II-II in FIG.
The screw member 1 for a member joining apparatus is used, for example, as the compression screw 129, the cortical screw 133, the cantilever screw 137, etc. shown in FIG. 8 used in the description of the prior art.
[0017]
The member joining device screw member 1 includes a shaft portion 3 and a head portion 5 provided at a base portion of the shaft portion 3. A predetermined screw portion 7 is formed on the shaft portion 3. Further, the head portion 5 is provided with a protruding portion 9 having a quadrangular cross-sectional shape, and two holes 11 and 13 are formed in the protruding portion 9. These holes 11 and 13 are formed in the direction orthogonal to the axial direction of the screw member 1 for member joining devices. These holes 11 and 13 are for passing the wires 21 when they are bound by the wires 21 (shown in FIGS. 3 and 4).
[0018]
Therefore, an actual usage example will be described with reference to FIGS. FIG. 3 is a view showing a part of FIG. 8 used in the description of the conventional example, in which the screw member 1 for a member joining apparatus according to the present embodiment is used as a coating screw. The tube plate 103 and the femur 101 are firmly bound to each other while the wire 21 is passed through the holes 11 and 13 provided in the protruding portion 9 of the head portion 5 of the screw member 1 for the member joining apparatus. Further, after the binding with the wire 21 is completed, the holes 11 and 13 are caulked with a jig (not shown). This prevents inadvertent disconnection of the wire 21 from the holes 11 and 13.
[0019]
In the case shown in FIG. 4, when a fracture occurs in a part of the femur 101, this is screwed and joined via the washer 23 by the screw member 1 for the member joining device, and then the wire 21 is used. And bind them. Also in this case, the fracture portion and the femur 101 are firmly bound while passing the wire 21 through the holes 11 and 13 provided in the protruding portion 9 of the head portion 5 of the screw member 1 for the member joining device. It is. Further, after the binding with the wire 21 is completed, the holes 11 and 13 are caulked with a jig (not shown). This prevents inadvertent disconnection of the wire 21 from the holes 11 and 13.
[0020]
As described above, according to the present embodiment, the following effects can be obtained.
First, when the fracture portion is joined using the bone joining device and then tied with the wire 21, there is no need to prepare and fix a separate metal fitting as in the prior art, and the head 5 of the member joining device screw member 1 is fixed. It can carry out using the holes 11 and 13 of the provided protrusion part 9 as it is. Accordingly, the number of parts can be reduced, and the joining work can be facilitated to shorten the time required for the work.
Further, since the holes 11 and 13 are caulked after being bound by the wire 21, it is possible to prevent the wire 21 from being inadvertently pulled out from the holes 11 and 13.
[0021]
Next, a second embodiment of the present invention will be described with reference to FIGS. In the case of the second embodiment, the protruding portion 9 in the first embodiment is further extended in the axial direction, and other holes 15 and 17 are provided in a direction orthogonal to the holes 9 and 11. Is.
Since other configurations are the same as those in the first embodiment, the same portions are denoted by the same reference numerals and description thereof is omitted.
[0022]
According to the above configuration, since the same effects as those of the first embodiment can be obtained, the other holes 15 and 17 orthogonal to the holes 11 and 13 are provided, so that the binding work by the wire 21 can be performed. It will be easier to do. Further, by providing a plurality of holes oriented in different directions in one member joining device screw member, other screw members can be formed as ordinary screw members having no holes.
[0023]
The present invention is not limited to the first and second embodiments.
First, various forms are conceivable without being limited to the illustrated configuration of the osteosynthesis device screw member.
Also, the number and direction of the holes are not particularly limited.
[0024]
【The invention's effect】
As described in detail above, according to the screw member for a member joining apparatus according to the present invention, when joining the members using the member joining apparatus and then tying them with the string body, it is necessary to prepare and fix a separate bracket as in the past. Rather, the hole provided in the head portion of the screw member can be used as it is. Accordingly, the number of parts can be reduced, and the joining work can be facilitated to shorten the time required for the work.
Moreover, according to the member joining method by this invention, members can be joined and tied with a string body by simple operation | work. Further, by caulking the hole after binding, it is possible to prevent inadvertent removal from the hole of the string body.
[Brief description of the drawings]
FIG. 1 is a side view showing the overall configuration of a screw member for a member joining apparatus, showing a first embodiment of the present invention.
FIG. 2 is a diagram showing a first embodiment of the present invention and is a view taken along the line II-II in FIG. 1;
FIG. 3 is a diagram showing a first embodiment of the present invention, and is a diagram showing a state where a screw member for a member joining apparatus is actually used.
FIG. 4 is a diagram showing a first embodiment of the present invention, and is a diagram showing a state in which a screw member for a member joining device is actually used.
FIG. 5 is a side view showing an overall configuration of a screw member for a member joining apparatus, showing a second embodiment of the present invention.
6 is a diagram showing a first embodiment of the present invention, and is a view taken along arrows IV-IV in FIG. 1;
7 is a view showing the first embodiment of the present invention, and is a view taken along arrows VV in FIG. 1; FIG.
FIG. 8 is a diagram showing a conventional example, and is a diagram showing a state in which a fractured bone is to be joined by a member joining device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Screw member 5 for member joining apparatuses Head part 9 Protruding part 11 Hole 13 Hole 15 Hole 17 Hole 21 Wire (string)
23 Washer

Claims (4)

ねじ部を備えた軸部と、上記軸部の基端に設けられた頭部と、を具備し、骨折した骨を接合する骨接合装置にあって使用される骨接合装置用ねじ部材において、
上記頭部の反軸部側に突出する突出部を設け、該突出部に締結用紐体を通すための貫通した孔を設け、
上記貫通した孔は上記突出部の軸方向に沿って異なる位置に相互に直交する方向に指向した状態で夫々設けられていることを特徴とする骨接合装置用ねじ部材。In a screw member for an osteosynthesis device used in an osteosynthesis device comprising an axial portion provided with a screw portion and a head portion provided at the proximal end of the axial portion, and for joining a fractured bone,
Providing a protruding portion that protrudes on the opposite side of the head, providing a through hole for passing a fastening string through the protruding portion,
The screw member for an osteosynthesis device, wherein the through-holes are respectively provided in different directions along the axial direction of the projecting portion in directions orthogonal to each other . 請求項１記載の骨接合装置用ねじ部材において、
上記貫通した孔は上記突出部の軸方向に沿って異なる位置に２個ずつ設けられていることを特徴とする骨接合装置用ねじ部材。The screw member for an osteosynthesis device according to claim 1,
A screw member for an osteosynthesis device , wherein two through holes are provided at different positions along the axial direction of the protrusion . 請求項１又は請求項２記載の骨接合装置用ねじ部材と、上記骨接合装置用ねじ部材を使用して骨を接合した後、上記骨接合装置用ねじ部材の突出部に設けられた孔に通されて骨と骨接合装置用ねじ部材とを縛り付けていく紐体と、を具備したことを特徴とする骨接合装置。After the bone is joined using the screw member for an osteosynthesis device according to claim 1 and the screw member for the osteosynthesis device, the hole provided in the protruding portion of the screw member for the osteosynthesis device An osteosynthesis device comprising: a string member that passes through and binds a bone and a screw member for an osteosynthesis device. 請求項３記載の骨接合装置において、
紐体によって縛り付けた後、孔部をかしめることにより、紐体の孔からの不用意な抜けを防止するようにしたことを特徴とする骨接合装置。 The osteosynthesis device according to claim 3,
An osteosynthesis device characterized by preventing the cord body from being inadvertently pulled out from the hole by caulking the hole after being bound by the cord body .
JP2000123528A 2000-04-25 2000-04-25 Screw member for osteosynthesis device and osteosynthesis device Expired - Fee Related JP4287022B2 (en)

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KR100798058B1 (en) * 2001-12-01 2008-01-28 가부시키가이샤 아이 메딕 Implant for bone fixation
FR2860420B1 (en) * 2003-10-03 2006-06-02 Surfic Technologies OSTEOSYNTHESIS DEVICE

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