JPH0824281A - Tip melting screw - Google Patents

Tip melting screw

Info

Publication number
JPH0824281A
JPH0824281A JP6191735A JP19173594A JPH0824281A JP H0824281 A JPH0824281 A JP H0824281A JP 6191735 A JP6191735 A JP 6191735A JP 19173594 A JP19173594 A JP 19173594A JP H0824281 A JPH0824281 A JP H0824281A
Authority
JP
Japan
Prior art keywords
screw
tip
band
ligament
body part
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
JP6191735A
Other languages
Japanese (ja)
Inventor
Ikufumi Yamada
郁史 山田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to JP6191735A priority Critical patent/JPH0824281A/en
Publication of JPH0824281A publication Critical patent/JPH0824281A/en
Pending legal-status Critical Current

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
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/866—Material or manufacture
    • 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
    • A61B17/8625—Shanks, i.e. parts contacting bone tissue
    • A61B17/8635—Tips of screws
    • 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
    • A61B17/8645—Headless screws, e.g. ligament interference screws
    • 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
    • A61B17/8685—Pins or screws or threaded wires; nuts therefor comprising multiple separate parts

Landscapes

  • 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)
  • Prostheses (AREA)
  • Surgical Instruments (AREA)

Abstract

PURPOSE:To reduce the possibility of tearing of a band implanted by a method wherein a screw is made up of a pointed tip part and a body part and the pointed tip part of the screw is melted after the fixing of the band to make the band hard to tear. CONSTITUTION:A screw made up of a pointed tip part 1 and a body part 2 is made of a melting material at least at a thread part of the pointed tip part 1 so as not to damage a band after being inserted and the thread part of the body part 2 for fixing a bone piece of the band is made of a non-absorbing material. The pointed tip part 1 and the body part 2 may be integrated or separated. When they are allowed to be separated, the tip 4 of the body part 2 is so arranged as not to damage the band implanted. The use of the screw enables the reducing of the possibility of tearing of the band rebuilt at the tip of the screw.

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。特に、膝靭帯再建を、
骨片付き膝蓋腱を用いて行なうときに使用する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a screw used for fixing a reconstructed ligament in the orthopedic region, mainly in the medical field. In particular, knee ligament reconstruction,
Used when using a patellar tendon with bone fragments.

【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が
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。[Prior Art] A conventional screw (for example, Kurosaka screw) has a conical tip and has a thread, and when the implanted ligament moves when the screw is inserted too much, the tip of the screw or the screw is screwed. There was a possibility of cutting in the mountains.

【０００３】［本発明が解決しようとする課題］スクリ
ューの尖端部１が、靭帯の固定後溶けることで、移植さ
れた靭帯の切れる可能性を減らすことである。[Problem to be Solved by the Invention] It is to reduce the possibility that the implanted ligament is cut off by melting the tip portion 1 of the screw after fixing the ligament.

【０００４】［課題を解決するための手段］スクリュー
は、尖端部１及び、体部２から構成されており、靭帯３
の固定後、スクリューの尖端部１が溶けることで、靭帯
が切れにくくする。[Means for Solving the Problems] The screw comprises a tip portion 1 and a body portion 2, and a ligament 3
After the fixation, the melting point 1 of the screw makes it difficult to cut the ligament.

【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、スクリュー尖先端１の
部分が溶けるので靭帯が切れる可能性が減る。[Operation] By using this screw, even if the transplanted ligament moves, the portion of the tip 1 of the screw is melted and the possibility of the ligament being cut is reduced.

【０００６】［実施例］尖端部１は体部２への挿入部５
を有しており差し込むことで一体となるスクリューであ
るが、挿入部５が、６角柱のとき、体部２の挿入される
部分６も断面が６角というように、体部２を回したと
き、尖端部１も同時に回る構造になっている。尖端部１
は、必ずしも、テーパー部分だけでなく、ねじ山の平行
部分を含んでいても良い。尖端部１は、ポリジオキサミ
ン、ポリ乳酸、ポリグリコアシッド等、生体に害がなく
吸収性の材料で出来ているため、固定後吸収されれば、
ねじ山で靭帯３は傷付けられない。体部２は、非吸収性
のため固定力を有する。 体部２の先端４は、鈍な構造
になっているため、靭帯３は尖端部１が残っているよう
な構造に比べ切れない。尖端部１と体部２にはガイドワ
イヤ８が通る共通の穴９があってもよい。体部２の後端
１０は、鈍な構造になっていても良い。このとき、この
部が、骨孔７より外に出ても、神経を刺激しにくく、痛
みを出しにくい。尖端部１及び、体部２おのおの複数に
分解できる構造でもよい。このとき、後端１０が吸収性
の材質でもよい。尖端部１及び、体部２は、挿入時、一
体となって回るようかみ合う部分を持っているが、その
形状は問わないし、ねじ込み式でもよい。先端４の構造
は、球状で無く他の構造でもよいし、平面でもよい。共
通の穴９は無くても良い。後端１０の構造は、球状でな
くても良い。[Embodiment] The tip portion 1 is an insertion portion 5 into the body portion 2.
It is a screw that is integrated by inserting it, but when the insertion part 5 is a hexagonal column, the body part 2 is rotated so that the part 6 into which the body part 2 is inserted also has a hexagonal cross section. At this time, the tip portion 1 is also structured to rotate at the same time. Point 1
May include not only the tapered portion but also the parallel portion of the screw thread. The tip 1 is made of an absorbable material such as polydioxamine, polylactic acid, and polyglycoacid, which is harmless to the living body.
The thread does not damage the ligament 3. The body part 2 has a fixing force because it is non-absorbable. Since the tip 4 of the body 2 has a blunt structure, the ligament 3 cannot be cut as compared with the structure in which the tip 1 remains. The pointed portion 1 and the body portion 2 may have a common hole 9 through which the guide wire 8 passes. The rear end 10 of the body 2 may have a blunt structure. At this time, even if this portion goes out of the bone hole 7, it is difficult to stimulate nerves and cause pain. A structure that can be disassembled into a plurality of pointed portions 1 and a plurality of body portions 2 may be used. At this time, the rear end 10 may be made of an absorbent material. The pointed portion 1 and the body portion 2 have portions that engage with each other so that they can rotate together when inserted, but the shape does not matter and may be a screw type. The structure of the tip 4 may not be spherical, but may be another structure or a flat surface. The common hole 9 may be omitted. The structure of the rear end 10 does not have to be spherical.

【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。[Advantages of the Invention] By using the present screw, the possibility of rupture of the reconstructed ligament at the tip of the screw can be reduced.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の斜視図FIG. 1 is a perspective view of the present invention.

【図２】本発明の断面図FIG. 2 is a sectional view of the present invention.

【図３】本発明の使用摸式図FIG. 3 is a schematic view of a working model of the present invention.

【符号の説明】[Explanation of symbols]

１は尖端部、２は体部、３は靭帯、４は先端、５は挿入
部、６は挿入される部分、７は骨孔、 ８ガイドワイ
ヤ、９は穴、１０は後端、1 is a tip part, 2 is a body part, 3 is a ligament, 4 is a tip, 5 is an insertion part, 6 is a part to be inserted, 7 is a bone hole, 8 is a guide wire, 9 is a hole, 10 is a rear end,

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】尖端部１と体部２からなるスクリューで、
挿入後、移植された靭帯３を傷付けないように、尖端部
１の少なくともねじ山部分が、溶ける材料で出来ていお
り、体部２の靭帯３の骨片を固定するねじ山部分が、非
吸収性の材料でできているもので、尖端部１と体部２は
一体でも分離できても良いが、分離できる場合は体部２
の先端４が、移植された靭帯３を傷付けないような構造
になっているもの。1. A screw comprising a tip portion 1 and a body portion 2,
After insertion, at least the threaded portion of the tip 1 is made of a melting material so that the implanted ligament 3 is not damaged, and the threaded portion of the body 2 that fixes the bone fragments of the ligament 3 is non-absorbable. Made of a flexible material, the tip 1 and the body 2 may be integrated or separated, but if they can be separated, the body 2
The tip 4 of the is structured so as not to damage the transplanted ligament 3.
JP6191735A 1994-07-12 1994-07-12 Tip melting screw Pending JPH0824281A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6191735A JPH0824281A (en) 1994-07-12 1994-07-12 Tip melting screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6191735A JPH0824281A (en) 1994-07-12 1994-07-12 Tip melting screw

Publications (1)

Publication Number Publication Date
JPH0824281A true JPH0824281A (en) 1996-01-30

Family

ID=16279631

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6191735A Pending JPH0824281A (en) 1994-07-12 1994-07-12 Tip melting screw

Country Status (1)

Country Link
JP (1) JPH0824281A (en)

Cited By (6)

* 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 Suture fixing system with cannula
EP2182865A2 (en) * 2007-07-17 2010-05-12 Ilion Medical LLC Bone screws and particular applications to sacroiliac joint fusion
JP2011505726A (en) * 2007-11-22 2011-02-24 プレーラ・アクチェンゲゼルシャフト Safe facsimile transmission method and apparatus
US8403957B2 (en) 2006-03-09 2013-03-26 Covidien Lp Cannulated suture anchor system
JP2015180294A (en) * 2008-12-09 2015-10-15 スミス アンド ネフュー インコーポレーテッド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

Cited By (10)

* 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 Suture fixing system with cannula
JP4922316B2 (en) * 2006-03-09 2012-04-25 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 Suture fixing system with cannula
US8403957B2 (en) 2006-03-09 2013-03-26 Covidien Lp Cannulated suture anchor system
EP2182865A2 (en) * 2007-07-17 2010-05-12 Ilion Medical LLC Bone screws and particular applications to sacroiliac joint fusion
EP2182865A4 (en) * 2007-07-17 2012-09-26 Ilion Medical Llc Bone screws and particular applications to sacroiliac joint fusion
US9668781B2 (en) 2007-07-17 2017-06-06 Ilion Medical, Inc. Methods for delivery of screws for joint fusion
US11045231B2 (en) 2007-07-17 2021-06-29 Ilion Medical, Inc. Methods for delivery of screws for joint fusion
JP2011505726A (en) * 2007-11-22 2011-02-24 プレーラ・アクチェンゲゼルシャフト Safe facsimile transmission method and apparatus
JP2015180294A (en) * 2008-12-09 2015-10-15 スミス アンド ネフュー インコーポレーテッド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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