JP2000514669A - Bone insertion screw and its tightening tool - Google Patents

Bone insertion screw and its tightening tool

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Publication number
JP2000514669A
JP2000514669A JP09527246A JP52724697A JP2000514669A JP 2000514669 A JP2000514669 A JP 2000514669A JP 09527246 A JP09527246 A JP 09527246A JP 52724697 A JP52724697 A JP 52724697A JP 2000514669 A JP2000514669 A JP 2000514669A
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Japan
Prior art keywords
screw
head
screw body
bone
tightening
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JP2000514669A5 (en
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キルシユ，アクセル
デユール ヴアルター
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • 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
    • A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8875—Screwdrivers, spanners or wrenches
    • A61B17/8877—Screwdrivers, spanners or wrenches characterised by the cross-section of the driver bit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
    • F16B31/021—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load by means of a frangible part
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/03—Automatic limiting or abutting means, e.g. for safety
    • A61B2090/037—Automatic limiting or abutting means, e.g. for safety with a frangible part, e.g. by reduced diameter

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Mechanical Engineering (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Neurology (AREA)
  • Surgical Instruments (AREA)

Abstract

(57)【要約】 骨に挿入、特に義歯仮床を固定するためのネジが、骨部分の固定をサポートするため、ネジ山部分と、それに直接または間接的に接続する頭部を設け、そこにネジ本体を骨にねじ込む装置が備えらており、ネジ本体をねじ込む装置は、頭部と一体型に形成されたシャフトであり、頭部とシャフトとの間の接続部分で、少なくとも一つの切離し部分を形成している。更に緊締工具が、その様な種類のネジまたは、そのネジ本体用であることは明らかである。 (57) [Summary] To support the fixation of the bone part, the screw for inserting into the bone, especially for fixing the denture temporary bed, is provided with a thread part and a head directly or indirectly connected to it. Device for screwing the screw body into the bone, wherein the device for screwing the screw body is a shaft integrally formed with the head and at least one disconnection at a connection portion between the head and the shaft. Forming a part. Furthermore, it is clear that the tightening tool is for such a screw type or its screw body.

Description

【発明の詳細な説明】 骨挿入ネジとその緊締工具 本発明は、骨に挿入する特に義歯仮床を固定するためのネジに関しており、骨 部分の固定をサポートし、ネジ山部分とそれに直接または間接的に接続する頭部 から成るネジ本体を備え、そこにネジ本体が回転する装置を備える。本発明は更 に、その様なネジまたはそのネジ本体用の緊締工具に関する。 非常に小さな形態の骨ネジは、通常は5mm未満の大きさの頭部を備え、一般に 頭部の上側に平らな溝または十字形溝を、骨内でネジを回転させるために備えて いる。その様なネジは、主に義歯仮床の固定のために作用し、骨部分の固定をサ ポートする。非常に平らな構造では、またネジのねじ込みまたは締めるため回転 する溝あるいは十字溝が、単に非常に浅くなり得ることが起きてしまう。それは 、工具をネジを操作するため、はめることが困難というだけでなく、また工具の 歯が滑ったり、破損が生じる危険性がある。 本発明の課題は、従ってネジを利用して、確実且つ負担なく骨に挿入すること である。 その課題は、請求の範囲によるネジによって解決される。有利な実施形態は下 記の請求の範囲での主題である。 本発明によるネジは、ネジ本体をねじ込む装置が頭部と一体型に形成されるシ ャフトであり、頭部とシャフトの間の接続部分に、少なくとも一つ切離し部分が 形成さ れている。ネジ本体とねじ込み工具は、切離し部分とすぐ近くで、一体型装置と なって取り付けられている。その一体型装置は、適当な回転ギア装置によって、 僅かな回転数で骨内にねじ入れられる。ねじ入れ終了後、切離し部分に加わる回 転モーメントが、非常に大きく増し、ねじ本体がシャフトから折れて、骨内に残 る。 有利には、少なくとも一つの切離し部分が、対応する望ましい最大の締め回転 モーメントに合わせて、面積を画定している。またその様な面積に対して大きさ は、場合によって材料の選択に依存して、実験によって確定される。 特別に有利な実施例によると、ネジ本体が頭部に平縁を備えており、それにシ ャフトが接続されている。切離し部分は、その際に平縁のシャフト方向の側に画 定している。その様な平縁は、中央平縁として有効な方法で形成されており、ネ ジ本体の中央軸方向に伸びて、両側でフライスを沈ませるように、製造されてお り、フライスは真っ直ぐに望ましい平縁に置かれる。 殆どの使用の際、確定した時間の後、ネジ本体を骨から再度ねじって外すこと が可能である。そこでは、ネジ本体の頭部に設けられた平縁が、緊締工具を取付 可能なように形成されている。 その様なねじ、またはそのネジ本体用の緊締工具は、緊締工具の自由端部が溝 を備え、それはネジ本体の頭部の連結部分を、例えば平縁に沿ってつかめるよう に、寸 法が決められる。 別の有利な緊締工具は、溝の範囲で、溝を画定する連結部を窪みに充分に入る ように形成されており、窪みはネジ本体の頭部における平縁の両側に形成されて いる。 以下に本発明の単なる一例を、添付図面を参照して説明する。 第１図は、前記発明の実施の形態に関連して骨に挿入するネジの側面図である 。第２図は、ネジの頭部の範囲の断面図である。 第３図は、シャフトを除いて、ネジの頭部を上から見た図である。 第４図は、ネジまたは、本発明に関するそのネジ本体用の緊締工具の側面図で あり、一部を長手方向断面を示している。 第５図は、第４図に対して約90°回転した緊締工具の一部を切除した側面図で ある。 第１図は、本発明による骨に挿入するネジの側面図を示している。ネジはネジ 本体１０とねじ込み回転工具２０から構成され、それらは互いに一体型に形成さ れており、ネジ本体１０とねじ込み回転工具２０との間の接続部分に、切離し部 ２８が画定されている。ネジ本体１０は、そこで一般的な方法のネジ山部分１２ から成り、それには直接または間接的に接続した頭部１４を備えている。ねじ込 み回転工具２０は、長く伸びたシャフト２２から形成され、シャフトはネジ本体 １０の頭部１４の方 向へ、画定部分２４に渡って先細りしている。そこでは部分２４と向い合うシャ フト２２の端部に、連結部分２６が角状部分またはその様な連結部２６を備えて いる。 接続部分の構成は、別の第２図と第３図に関連して明確に説明される。第２図 は、ネジ本体１０の頭部１４の長手方向の断面を示している。頭部１４では、中 央シャフトの両側とそれから削除された窪み１８に、例えば対応するフライス工 具により、はめ込まれ、頭部１４の内側で平縁１６が直立しており、その露出し た表面に、第３図に直接示されているように、切離し部分２８を備える。第３図 では切離し部分が、円形表面のように形成されているが、また別の表面形状でも あり得、それによって表面の大きさを、表面の寸法に渡って、骨内のネジに対し て望ましい最大の締め回転モーメントを確定させるようにすることができる。 第１図と第３図の共通する考察では、シャフト２２の先細りする部分２４は、 切離し部分２８へまっすぐ伸びて、ネジ本体１０の頭部１４における平縁１６に 固定される様に備えられている。 ネジ本体１０のネジ山部分１２が骨内で、切離し部分２８によって確定する締 め回転モーメントを越えるまで回転すると、ねじ込み回転工具２０が先細りする 部分または、ネジ本体１０の平縁１６の切離し部分２８で外れる。 その後、ネジ本体１０が骨から取り除かれ、第４図と 第５図の部分側面図に示されたように、実用的な緊締工具３０が使用される。本 質的に緊締工具３０は、特に好ましくは第５図の部分的に切除された範囲で分か る様に、緊締工具本体３２の自由端部に溝３４が形成されており、溝３４はネジ 本体１０の頭部１４における平縁１６に沿ってつかむように画定されている。頭 部１４に対して緊締工具３０を充分に着座させることを確実にするため、溝の発 端部３６は、本質的にネジ本体１０の頭部１４の窪み１８にロックして配置する 様に、形成されている。 緊締工具３０は、ねじ込み回転工具２０と類似であり、角状部分用に連結部を 備えている。 前記の説明、図面並びに請求の範囲に明示された本発明の特徴は、単一で或い は任意に組み合わせても本発明の発展にとって、本質的なことであり得る。DETAILED DESCRIPTION OF THE INVENTION                         Bone insertion screw and its tightening tool   The present invention relates to a screw for inserting a bone, in particular for fixing a denture temporary bed, Supports the fixing of the part and the head that connects directly or indirectly to the thread part And a device for rotating the screw body. The present invention The invention also relates to such a screw or a tightening tool for the screw body.   Very small forms of bone screws usually have a head size less than 5 mm and are generally Provide a flat or cruciform groove on the top of the head to rotate the screw in the bone I have. Such screws serve primarily to fix the denture base and support the fixation of bone parts. Port. For very flat structures, also turn to screw in or tighten It happens that the groove or cross groove that is formed can simply be very shallow. that is In addition, it is not only difficult to fit the tool with the screw, but also There is a risk of slipping or breakage of the teeth.   The object of the present invention is therefore to use screws and insert them securely and without strain into bone. It is.   The task is solved by a screw according to the claims. The preferred embodiment is below This is the subject of the claims.   In the screw according to the present invention, a device for screwing the screw body is formed integrally with the head. And at least one cut-off at the connection between the head and the shaft. Formed Have been. The screw body and the screwing tool should be close to It is attached. The integrated device is provided by a suitable rotating gear device. It can be screwed into the bone at a low speed. After screwing in, turn The rolling moment increases significantly and the screw body breaks off the shaft and remains in the bone. You.   Advantageously, the at least one separating part has a corresponding desired maximum tightening rotation The area is defined according to the moment. Also the size for such an area Is determined experimentally, possibly depending on the choice of materials.   According to a particularly advantageous embodiment, the screw body has a flat edge on the head, and The raft is connected. The cut-off part is drawn on the side of the flat edge in the shaft direction. I have decided. Such a flat edge is formed in a manner effective as a central flat edge, It is manufactured to extend in the direction of the center axis of the body and sink the milling cutter on both sides. And the milling cutter is placed straight on the desired flat edge.   For most uses, re-screw the screw body from the bone after a defined time Is possible. There, the flat edge provided on the head of the screw body attaches the tightening tool. It is formed as possible.   Such a screw, or a tightening tool for the screw body, may have a free end which is a groove. Which can grip the connecting part of the head of the screw body, for example along a flat edge , Dimension The law is decided.   Another advantageous tightening tool is that, in the region of the groove, the connection defining the groove enters the recess well The recesses are formed on both sides of the flat edge of the head of the screw body. I have.   Hereinafter, a mere example of the present invention will be described with reference to the accompanying drawings.   FIG. 1 is a side view of a screw inserted into a bone according to the embodiment of the invention. . FIG. 2 is a sectional view of the area of the head of the screw.   FIG. 3 is a top view of the head of the screw except for the shaft.   FIG. 4 is a side view of a screw or a tightening tool for the screw body according to the invention. Yes, a part is shown in a longitudinal section.   FIG. 5 is a side view in which a part of the tightening tool rotated about 90 ° with respect to FIG. is there.   FIG. 1 shows a side view of a screw inserted into a bone according to the invention. Screw is screw It comprises a body 10 and a screw-in rotary tool 20, which are formed integrally with one another. The connecting portion between the screw body 10 and the screw-in rotary tool 20 has a cut-off portion. 28 are defined. The screw body 10 is then provided with a thread 12 Comprising a head 14 connected directly or indirectly. Screw-in The rotary tool 20 is formed from a long elongated shaft 22, and the shaft is a screw body. 10 heads 14 In the opposite direction, it tapers over the defined portion 24. Where the part facing the part 24 At the end of the shaft 22, the connecting portion 26 is provided with a square portion or such a connecting portion 26. I have.   The construction of the connecting part is clearly explained in relation to the other FIGS. 2 and 3. Fig. 2 Shows a longitudinal section of the head 14 of the screw body 10. In the head 14, medium On both sides of the central shaft and the recesses 18 removed therefrom, for example, the corresponding milling The flat edge 16 is upright inside the head 14, The cut surface is provided with a cut-off portion 28 as shown directly in FIG. Fig. 3 In the cut-off part is formed like a circular surface, but with another surface shape Possible, thereby increasing the size of the surface, over the dimensions of the surface, for screws in the bone To determine the desired maximum tightening torque.   1 and 3, the tapered portion 24 of the shaft 22 is It extends straight to the cut-off portion 28 and is connected to the flat edge 16 of the head 14 of the screw body 10. It is provided to be fixed.   The threaded portion 12 of the screw body 10 is tightened within the bone and defined by a cut-off portion 28. When the screw is turned to exceed the rotational moment, the screw-in rotary tool 20 tapers. It comes off at a portion or a cut-off portion 28 of the flat edge 16 of the screw body 10.   Thereafter, the screw body 10 is removed from the bone, and FIG. As shown in the partial side view of FIG. 5, a practical tightening tool 30 is used. Book Qualitatively, the clamping tool 30 is particularly preferably separated in the partially cut-out area of FIG. Groove 34 is formed at the free end of the tightening tool body 32 so that the groove 34 It is defined to grab along a flat edge 16 on the head 14 of the body 10. Head To ensure that the clamping tool 30 is fully seated against the section 14, The end 36 is essentially locked into the recess 18 in the head 14 of the screw body 10. In this way, it is formed.   The tightening tool 30 is similar to the screw-in rotary tool 20 and has a connecting portion for a square portion. Have.   The features of the invention as set forth in the foregoing description, drawings and claims may be singular or exclusive. Any combination may be essential to the development of the present invention.

【手続補正書】特許法第１８４条の８第１項 【提出日】平成１０年３月１１日（１９９８．３．１１） 【補正内容】 請求の範囲 １．骨部分の固定をサポートするため、ネジ山部分と、それに直接または間接的 に接続する頭部を設け、そこにネジ本体を骨にねじ込み、頭部と一体型に形成さ れたシャフトである装置が備えられ、頭部（１４）とシャフト（２２、２４）と の間の接続部分で、少なくとも一つの切離し部分（２８）を形成した、骨に挿入 、特に義歯仮床を固定するためのネジにおいて、 頭部（１４）が平縁（１６）を備え、それにシャフト（２２、２４）が接続され ていることを特徴とするネジ。 ２．少なくとも一つの切離し部分（２８）が、ネジ本体（１０）の望ましい最大 の締め回転モーメントに対応して寸法を決められた平面を画定することを特徴と する請求の範囲１に記載のネジ。 ３．緊締工具（３２）の自由端に溝（３４）が備えられ、その工具が連結部分（ １６）に沿ってネジ本体（１０）の頭部（１４）をつかめるように、溝の寸法を 決めており、平縁（１６）によって連結部分（１６）が形成されていることを特 徴とする請求の範囲１〜２のいずれか一つに記載の緊締装置。 ４．溝（３４）の範囲で、窪み（１８）に充分にはめ込まれ且つ、溝（３４）を 形成した発端部分（３６）を備え、窪みがネジ本体（１０）の頭部（１４）にお ける平縁（１６）の両側に形成されることを特徴とする請求の範囲３に記載の緊 締工具。[Procedure of Amendment] Article 184-8, Paragraph 1 of the Patent Act [Submission date] March 11, 1998 (1998.3.11) [Correction contents]                               The scope of the claims 1. To support the fixation of the bone part, the thread part and its direct or indirect The head is connected to the head, and the screw body is screwed into the bone and formed integrally with the head. A head (14), shafts (22, 24) and Inserted into the bone, forming at least one cut-off portion (28) at the connection between In particular, for screws for fixing denture temporary beds, The head (14) has a flat edge (16) to which the shafts (22, 24) are connected. Screws. 2. The at least one cut-off portion (28) is the desired maximum of the screw body (10). It defines a plane that is dimensioned according to the tightening rotational moment of The screw according to claim 1, wherein 3. The free end of the clamping tool (32) is provided with a groove (34), which tool is connected to the connecting part ( The size of the groove is adjusted so that the head (14) of the screw body (10) can be grasped along 16). And that the connecting portion (16) is formed by the flat edge (16). A tightening device according to any one of claims 1 to 2, characterized in that: 4. In the area of the groove (34), it is fully fitted in the depression (18) and the groove (34) is With the formed starting portion (36), the recess is formed in the head (14) of the screw body (10). 4. The tensioning device according to claim 3, wherein the clamping is formed on both sides of the flat edge (16). Tightening tools.

───────────────────────────────────────────────────── フロントページの続き (81)指定国 ＥＰ(ＡＴ，ＢＥ，ＣＨ，ＤＥ， ＤＫ，ＥＳ，ＦＩ，ＦＲ，ＧＢ，ＧＲ，ＩＥ，ＩＴ，Ｌ Ｕ，ＭＣ，ＮＬ，ＰＴ，ＳＥ)，ＯＡ(ＢＦ，ＢＪ，ＣＦ ，ＣＧ，ＣＩ，ＣＭ，ＧＡ，ＧＮ，ＭＬ，ＭＲ，ＮＥ， ＳＮ，ＴＤ，ＴＧ)，ＡＰ(ＫＥ，ＬＳ，ＭＷ，ＳＤ，Ｓ Ｚ，ＵＧ)，ＥＡ(ＡＭ，ＡＺ，ＢＹ，ＫＧ，ＫＺ，ＭＤ ，ＲＵ，ＴＪ，ＴＭ)，ＡＬ，ＡＭ，ＡＴ，ＡＵ，ＡＺ ，ＢＢ，ＢＧ，ＢＲ，ＢＹ，ＣＡ，ＣＨ，ＣＮ，ＣＺ， ＤＫ，ＥＥ，ＥＳ，ＦＩ，ＧＢ，ＧＥ，ＨＵ，ＩＳ，Ｊ Ｐ，ＫＥ，ＫＧ，ＫＰ，ＫＲ，ＫＺ，ＬＫ，ＬＲ，ＬＳ ，ＬＴ，ＬＵ，ＬＶ，ＭＤ，ＭＧ，ＭＫ，ＭＮ，ＭＷ， ＭＸ，ＮＯ，ＮＺ，ＰＬ，ＰＴ，ＲＯ，ＲＵ，ＳＤ，Ｓ Ｅ，ＳＧ，ＳＩ，ＳＫ，ＴＪ，ＴＭ，ＴＲ，ＴＴ，ＵＡ ，ＵＧ，ＵＳ，ＵＺ，ＶＮ────────────────────────────────────────────────── ─── Continuation of front page    (81) Designated countries EP (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, L U, MC, NL, PT, SE), OA (BF, BJ, CF) , CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG), AP (KE, LS, MW, SD, S Z, UG), EA (AM, AZ, BY, KG, KZ, MD , RU, TJ, TM), AL, AM, AT, AU, AZ , BB, BG, BR, BY, CA, CH, CN, CZ, DK, EE, ES, FI, GB, GE, HU, IS, J P, KE, KG, KP, KR, KZ, LK, LR, LS , LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, S E, SG, SI, SK, TJ, TM, TR, TT, UA , UG, US, UZ, VN

Claims (1)

【特許請求の範囲】 １．骨部分の固定をサポートするため、ネジ山部分と、それに直接または間接的 に接続する頭部を設け、そこにネジ本体を骨にねじ込む装置が備えられた、骨に 挿入、特に義歯仮床を固定するためのネジにおいて、 ネジ本体をねじ込む装置が、頭部（１４）と一体型に形成されたシャフト（２２ 、２４）であり、頭部（１４）とシャフト（２２、２４）との間の接続部分で、 少なくとも一つの切離し部分（２８）を形成することを特徴とするネジ。 ２．少なくとも一つの切離し部分（２８）が、ネジ本体（１０）の望ましい最大 の締め回転モーメントに対応して寸法を決められた平面を画定することを特徴と する請求の範囲１に記載のネジ。 ３．頭部（１４）が平縁（１６）を備え、それにシャフト（２２、２４）が接続 されていることを特徴とする請求の範囲１または２に記載のネジ。 ４．緊締工具（３２）の自由端に溝（３４）が備えられ、その工具が連結部分（ １６）に沿ってネジ本体（１０）の頭部（１４）をつかめるように、溝の寸法を 決めていることを特徴とする請求の範囲１〜３のいずれか一つに記載の緊締装置 。 ５．平縁（１６）によって連結部分（１６）が形成されていることを特徴とする 請求の範囲４に記載の緊締工具。 ６．溝（３４）の範囲で、窪み（１８）に対して充分で あり且つ、溝（３４）を形成した発端部分（３６）を備え、窪みが、ネジ本体（ １０）の頭部（１４）における平縁（１６）の両側に形成されることを特徴とす る請求の範囲４または５に記載の緊締工具。[Claims] 1. To support the fixation of the bone part, the thread part and its direct or indirect To the head, which is equipped with a device for screwing the screw body into the bone. In the insertion, especially in the screw for fixing the denture temporary bed, A device for screwing the screw body includes a shaft (22) formed integrally with the head (14). , 24) at the connection between the head (14) and the shafts (22, 24), A screw, characterized in that it forms at least one cut-off portion (28). 2. The at least one cut-off portion (28) is the desired maximum of the screw body (10). It defines a plane that is dimensioned according to the tightening rotational moment of The screw according to claim 1, wherein 3. The head (14) has a flat edge (16) to which the shafts (22, 24) are connected The screw according to claim 1, wherein the screw is formed. 4. The free end of the clamping tool (32) is provided with a groove (34), which tool is connected to the connecting part ( The size of the groove is adjusted so that the head (14) of the screw body (10) can be grasped along 16). The tightening device according to any one of claims 1 to 3, wherein the tightening device is determined. . 5. The connecting portion (16) is formed by the flat edge (16). The tightening tool according to claim 4. 6. In the area of the groove (34), it is sufficient for the depression (18). And a starting portion (36) having a groove (34) formed therein, wherein the depression is formed in the screw body ( The head (14) of (10) is formed on both sides of the flat edge (16). A tightening tool according to claim 4 or claim 5.
JP09527246A 1996-01-31 1997-01-28 Bone insertion screw and its tightening tool Pending JP2000514669A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19603410A DE19603410C2 (en) 1996-01-31 1996-01-31 Screw for insertion into a bone and unscrewing tool therefor
DE19603410.8 1996-01-31
PCT/DE1997/000195 WO1997027812A1 (en) 1996-01-31 1997-01-28 Screw for insertion into a bone and tool for removing this screw

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JP2000514669A true JP2000514669A (en) 2000-11-07
JP2000514669A5 JP2000514669A5 (en) 2004-11-11

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CN (1) CN1210456A (en)
AU (1) AU2150797A (en)
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CA (1) CA2244217A1 (en)
DE (1) DE19603410C2 (en)
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CA2244217A1 (en) 1997-08-07
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DE19603410C2 (en) 1999-02-18
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AU2150797A (en) 1997-08-22
CN1210456A (en) 1999-03-10

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