JPH0866410A - Separable screw - Google Patents

Separable screw

Info

Publication number
JPH0866410A
JPH0866410A JP23974794A JP23974794A JPH0866410A JP H0866410 A JPH0866410 A JP H0866410A JP 23974794 A JP23974794 A JP 23974794A JP 23974794 A JP23974794 A JP 23974794A JP H0866410 A JPH0866410 A JP H0866410A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
screw
part
ligament
inserted
inside
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.)
Pending
Application number
JP23974794A
Other languages
Japanese (ja)
Inventor
Ikufumi Yamada
郁史 山田
Original Assignee
Ikufumi Yamada
郁史 山田
Priority date (The priority date 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 date listed.)
Filing date
Publication date

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/686Plugs, i.e. elements forming interface between bone hole and implant or fastener, e.g. screw
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86Threaded wires, pins or screws; Nuts therefor
    • A61B17/8685Threaded wires, pins or screws; Nuts therefor comprising multiple separate parts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86Threaded wires, pins or screws; Nuts therefor
    • A61B17/8625Shanks, i.e. parts contacting bone tissue
    • A61B17/8635Tips of screws
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86Threaded wires, pins or screws; Nuts therefor
    • A61B17/8645Headless screws, e.g. ligament interference screws
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00004(bio)absorbable, (bio)resorbable, resorptive

Abstract

PURPOSE: To provide a separable screw not to cut a grafted ligament by comprising with an inner part and an outer part and removing the inner part after fixing. CONSTITUTION: This screw has an inside part 2 to be inserted into an accepting part 5 of an outside part 3. Both parts are integrated by inserting. The cross section of the accepting part 5 is hexagonal and that of the inside part 2 to be inserted into the outside part 3 is also hexagonal, therefore, both are inserted integrated. The screw starts penetrate into the hole in a bone by a taper part 1 of the inside part 2. After fixing a ligament by a screw thread 7, the inside part 2 is driven out toward the opposite direction. Thereby possibility of rapture of reformed ligament can be reduced.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】[産業上の利用分野]本発明は、医療分野の主として、整形外科領域で再建靭帯の固定用に用いるスクリューに関するものである。 [0001] [FIELD OF THE INVENTION The present invention is primarily the medical field, it relates to a screw for use in fixed reconstruction ligament orthopedic area. 特に、膝靭帯再建を、 In particular, the knee ligament reconstruction,
骨片付き膝蓋腱を用いて行なうときに使用する。 To use when performed using the bone Katazuki patellar tendon.

【0002】[従来の技術]従来のスクリュー(例えば黒坂スクリュー)は、先端が、円錐状でありかつ、ネジ山があり、スクリューを入れすぎると移植された靭帯か動くとき、スクリューの先端やねじ山で切れる可能性があった。 [0002] [Prior Art] Conventional screw (e.g. Kurosaka screw), the tip is and is conical, there are threads, when moving or ligaments implanted too put screws, screw tip and a screw there is a possibility that the cut off in the mountains.

【0003】[本発明が解決しようとする課題]スクリューの内部2が、靭帯の固定後外せることで、移植された靭帯の切れる可能性を減らすことである。 [0003] an internal second screw [invention problems will to solve, by Hazuseru After fixation of the ligament, is to reduce the possibility of cut of transplanted ligament.

【0004】[課題を解決するための手段]スクリューは、内部2及び、外部3から構成されており、靭帯4の固定後、スクリューの内部2が外せることで、従来のような形状に比べ、靭帯が切れにくくする。 [0004] [Means for Solving the Problems] screw internal 2 and are composed of an external 3, after fixation of ligament 4, that Hazuseru internal second screw, as compared to the shape as in the prior art, ligaments are hard to cut.

【0005】[作用]このスクリューを用いることにより、移植された靭帯が動いても、スクリューの内部2が外せるので靭帯が切れる可能性が減る。 [0005] [Operation] The use of the screw, even if moving implanted ligament, is reduced possibility that the ligament is cut because the internal 2 Hazuseru screws.

【0006】[実施例]内部2は外部3への挿入部5を有しており挿入することで一体となるスクリューである。 [0006] [Example] Internal 2 is a screw to be integrally by inserting has an insertion portion 5 to the outside 3. 挿入部5は、図1においては、断面が六角形をしており、内部2の外部3に挿入される部分の断面も六角形なら外部3をドライバーで挿入するとき、2者は、一体となって挿入される。 Insertion unit 5 in FIG. 1, when cross section has a hexagonal, to insert a section external 3 If even hexagonal portion with a driver that is inserted into the external third inner 2, two parties, To integrally it is to be inserted. 内部2のテーパー部分1によりスクリューは骨孔6への侵入を開始するが、ねじ山部7 The tapered portion of the internal second screw starts entering the bone hole 6, but threaded portion 7
で、靭帯4を固定した後、内部2をスクリューの挿入方向と逆方向に外す。 In, after fixing the ligament 4, release the inner 2 in the insertion direction opposite to the direction of the screw. 外部3はねじ山部7を持っているが、先端8は、靭帯4へのストレスを減らすため、鈍な構造になってもよい。 External 3 has a threaded portion 7, but the tip 8, to reduce the stress on the ligament 4, may become blunt structure. 内部2にはガイドワイヤ9が通る穴10があり、ガイドワイヤ9下に、スクリューを通すことでスクリューの方向性を安定させる。 Inside 2 have holes 10 for the guide wire 9 passes, the lower guide wire 9, to stabilize the direction of the screw by passing a screw. 外部3の後端11は、鈍な構造になっていても良くこのとき、この部が、骨孔6より皮下に出ても、神経を刺激しにくく、痛みを出しにくい。 Rear 11 of the outer 3, when this may be made a blunt construction, this part is, even out the skin than bone tunnel 6, difficult to stimulate nerves, hardly out pain. 内部2および外部3の外面のねじ山は、連続性がなくても良く、大きさが違っても良い。 Threads of the outer surface of the internal 2 and external 3 may be no continuity may be different in size. テーパー部分1は、図3のごとく、ねじ山が切られていなくても良い。 Tapered section 1, as in FIG. 3, it may not have threads cut. 図4のごとく、内部2と外部3の挿入部5 As in Figure 4, the insertion portion 5 of the inner 2 and outer 3
の断面12は、円でも良いし、ねじ山がかみ合う形でもよく、形状は問わない。 Cross-section 12 of may be a circle, may be in the form of a screw thread is engaged, the shape does not matter. 図5のごとく、ガイドワイヤ9 As in Figure 5, the guide wire 9
の先端 13が穴10の直径より大きければ、ガイドワイヤ9を手前に引き抜くことで、内部2を抜ける。 If the tip 13 is greater than the diameter of the bore 10, by pulling out the guide wire 9 to the front, leaving the interior 2. 他の抜き方として、図6のごとく、内部2にねじ山14をきっておいて器具15で抜く方法や図7のごとく、引っ掛かり16を作っておいて抜く方法がある。 Other vent way, as in FIG. 6, as methods and 7 to pull in the instrument 15 keep in a threaded 14 into the interior 2, a method of Nuku keep making caught 16. 内部2を抜いた後、外部3の空間を埋めるために、図8のように、外部3にねじ山17を作っておき、ブロッカー21をねじ込んでも良いし、他の方法で空間を埋めても良い。 After removing the interior 2, to fill the space of the external 3, as shown in FIG. 8, in advance to make a screw thread 17 on the outside 3, it may be screwed a blocker 21, also fill the space in other ways good. 図9 Figure 9
から図11に於て使用例の概略を示す。 11 Te at schematically showing the example of use from. 骨孔6内に、靭帯4を移植し、靭帯4の骨片19をガイドワイヤ9下に挿入した本スクリューでとめる。 The bone hole 6, then transplanted ligament 4, stop in the screw inserting a bone piece 19 of ligament 4 under the guide wire 9. ガイドワイヤ9の先端13が、穴10より大きいとき、ガイドワイヤ9を挿入方向と逆に引き抜くことにより、内部2が抜ける。 Tip 13 of the guidewire 9, when the larger holes 10, by pulling out the guide wire 9 in the direction of insertion and opposite, inner 2 escapes. これにより靭帯4が動いても、従来に比べスクリュー先端で靭帯4を傷付ける可能性が減る。 Even Thus ligament 4 moves, possibly damaging the ligament 4 in screw tip is reduced compared with the prior art. 図11の様に、ブロッカー18を挿入すれば、外部3がつくる死腔を減らすことができる。 As in FIG. 11, by inserting the blocker 18, it is possible to reduce the dead space external 3 made.

【0007】[発明の効果]本スクリューを用いることにより、スクリュー先端での、再建靭帯の断裂の可能性を減らせる。 [0007] By using this screw [Effect of the invention], Heraseru at screw tip, the possibility of fracture reconstruction ligament.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の斜視図 Perspective view of the present invention; FIG

【図2】本発明の断面図 Sectional view of the invention; FIG

【図3】本発明の斜視図 Perspective view of the present invention; FIG

【図4】本発明の底面図 Bottom view of the FIG. 4 of the present invention

【図5】本発明の断面図 Figure 5 is a cross-sectional view of the present invention

【図6】本発明の断面図 6 is a cross-sectional view of the present invention

【図7】本発明の断面図 7 is a cross-sectional view of the present invention

【図8】本発明の断面図 Figure 8 is a cross-sectional view of the present invention

【図9】本発明の使用摸式図 [9] The use schematic diagram of the present invention

【図10】本発明の使用摸式図 [Figure 10] The use schematic diagram of the present invention

【図11】本発明の使用摸式図 [11] The use schematic diagram of the present invention

【符号の説明】 DESCRIPTION OF SYMBOLS

1はテーパー部分、2は内部、3は外部、4は靭帯、5 1 tapered portion, inside 2, 3 external, four ligaments, 5
は挿入部、6は骨孔、7はねじ山部、8は先端、9はガイドワイヤ、10は穴、11は後端、12は断面、13 Insertion unit, 6 bone tunnel is 7 threaded portion, 8 tip, the guidewire 9 and the hole 10, the rear end 11, 12 cross, 13
は先端、14はねじ山、15は器具、16は引っ掛かり、17はねじ山、18はブロッカー、19は骨片 The tip, 14 threads, 15 instrument, 16 caught, 17 threads, 18 blocker, 19 bone fragments

Claims (1)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】再建靭帯固定用のスクリューであるが、スクリューのテーパー部分1を持つ内部2と靭帯の固定部分を持つ外部3からなる、外部3に内部2が挿入式になったスクリューで、一体となって挿入された後、移植された靭帯4を傷付けないように、内部2をスクリューの挿入方向と逆方向に外すことができるもの。 Is a 1. A screw for reconstruction ligament fixation, consists of an external 3 with an internal 2 and fixed part of the ligament with a tapered section 1 of the screw, a screw internal 2 becomes inserted formula to the outside 3, after being inserted together, so as not to damage the ligament 4 implanted, which can release the inner 2 in the insertion direction opposite to the direction of the screw. テーパー部分1は必ずしもねじ山が切られていなくても良い。 The tapered portion 1 may not be necessarily the thread is turned off.
JP23974794A 1994-08-26 1994-08-26 Separable screw Pending JPH0866410A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23974794A JPH0866410A (en) 1994-08-26 1994-08-26 Separable screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23974794A JPH0866410A (en) 1994-08-26 1994-08-26 Separable screw

Publications (1)

Publication Number Publication Date
JPH0866410A true true JPH0866410A (en) 1996-03-12

Family

ID=17049334

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23974794A Pending JPH0866410A (en) 1994-08-26 1994-08-26 Separable screw

Country Status (1)

Country Link
JP (1) JPH0866410A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009529368A (en) * 2006-03-09 2009-08-20 タイコ ヘルスケア グループ リミテッド パートナーシップ The suture fastener system having a cannula
JP2011520512A (en) * 2008-05-14 2011-07-21 スミス アンド ネフュー インコーポレーテッドSmith & Nephew,Inc. Joint affinity biceps tendon fixed treatment
US8226714B2 (en) 2006-09-29 2012-07-24 Depuy Mitek, Inc. Femoral fixation
US8403957B2 (en) 2006-03-09 2013-03-26 Covidien Lp Cannulated suture anchor system
CN105078526A (en) * 2015-09-21 2015-11-25 中南大学湘雅医院 Apparatus for repairing ligament or tendon defect
US9259307B2 (en) 2008-12-09 2016-02-16 Smith & Nephew, Inc. Tissue repair assembly
US9408690B2 (en) 2008-12-09 2016-08-09 Smith & Nephew, Inc. Tissue repair assembly

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009529368A (en) * 2006-03-09 2009-08-20 タイコ ヘルスケア グループ リミテッド パートナーシップ The suture fastener system having a cannula
US8403957B2 (en) 2006-03-09 2013-03-26 Covidien Lp Cannulated suture anchor system
US9265602B2 (en) 2006-09-29 2016-02-23 Depuy Mitek, Llc Femoral fixation
US8226714B2 (en) 2006-09-29 2012-07-24 Depuy Mitek, Inc. Femoral fixation
US9241783B2 (en) 2008-05-14 2016-01-26 Smith & Nephew, Inc. Arthroscopic biceps tenodesis repair
JP2011520512A (en) * 2008-05-14 2011-07-21 スミス アンド ネフュー インコーポレーテッドSmith & Nephew,Inc. Joint affinity biceps tendon fixed treatment
US9259307B2 (en) 2008-12-09 2016-02-16 Smith & Nephew, Inc. Tissue repair assembly
US9408690B2 (en) 2008-12-09 2016-08-09 Smith & Nephew, Inc. Tissue repair assembly
CN105078526A (en) * 2015-09-21 2015-11-25 中南大学湘雅医院 Apparatus for repairing ligament or tendon defect

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