JP2009285358A - Guide member for medical cutting tool, and medical cutting tool to be inserted to the same - Google Patents

Guide member for medical cutting tool, and medical cutting tool to be inserted to the same Download PDF

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Publication number
JP2009285358A
JP2009285358A JP2008143798A JP2008143798A JP2009285358A JP 2009285358 A JP2009285358 A JP 2009285358A JP 2008143798 A JP2008143798 A JP 2008143798A JP 2008143798 A JP2008143798 A JP 2008143798A JP 2009285358 A JP2009285358 A JP 2009285358A
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cutting tool
guide
cutting
medical
medical cutting
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Shuji Wakayoshi
▲修▼似 若吉
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WAKAYOSHI SEISAKUSHO CO Ltd
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WAKAYOSHI SEISAKUSHO CO Ltd
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Priority to JP2008143798A priority Critical patent/JP2009285358A/en
Priority to CN2012104475710A priority patent/CN102940517A/en
Priority to CN200880000399.6A priority patent/CN101541254B/en
Priority to PCT/JP2008/060083 priority patent/WO2008149822A1/en
Priority to KR1020087031706A priority patent/KR20100021954A/en
Publication of JP2009285358A publication Critical patent/JP2009285358A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A61C1/082—Positioning or guiding, e.g. of drills
    • A61C1/084—Positioning or guiding, e.g. of drills of implanting tools

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Dental Prosthetics (AREA)
  • Surgical Instruments (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a guide member for a medical cutting tool for easily setting the cutting tool and performing a stable puncturing action, and to provide the medical cutting tool to be inserted to the guide member. <P>SOLUTION: The guide member 1 includes: a body portion 10 to be fitted to the tooth row of a patient; a guide portion 11 for guiding the cutting tool in a cutting direction, which performs a puncturing work to mount an implant; and a slit groove 12 which is opened by notching the side of the guide portion 11. The guide portion 11 has an inner diameter same as or a little larger than the outer diameter of the cutting member 22. The width of the slit groove 12 is set to be smaller than the inner diameter of the guide portion 11 and larger than the width of an inserting portion 28 which is formed with a thin width by notching a part of the outer peripheral surface of the cutting member 22. The inserting portion 28 is inserted to the slit groove 22, thereby the cutting member 22 is inserted to the guide portion 11 from a lateral direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、歯科、口腔外科、整形外科等の外科手術において、骨にインプラント用の挿着孔を穿孔する際に用いられる医療用切削具のガイド部材に関する。   The present invention relates to a guide member for a medical cutting tool used in drilling an insertion hole for an implant in a bone in a surgical operation such as dentistry, oral surgery, and orthopedic surgery.

歯科、口腔外科、整形外科等の外科手術では、人工歯根、人工関節、人工骨、骨折治療具等のインプラントを正確に挿着する必要があり、そのため人体の生体骨に予め穿孔して挿着孔を形成し、挿着孔にインプラントを挿入して位置決め固定するようにしている。   In surgical operations such as dentistry, oral surgery, and orthopedic surgery, it is necessary to accurately insert implants such as artificial roots, artificial joints, artificial bones, and fracture treatment tools. A hole is formed, and the implant is inserted into the insertion hole to be positioned and fixed.

こうした穿孔に用いる医療用切削具としては、例えば、特許文献１には、管状鋸及びドリルを同軸に設け、管状鋸により骨状組織を穿孔しその際生じる骨片をドリルで内部に収集する切削具が挙げられる。   As a medical cutting tool used for such drilling, for example, in Patent Document 1, a tubular saw and a drill are provided coaxially, and a bone-shaped tissue is drilled by the tubular saw and the resulting bone fragments are collected inside by a drill. Tools.

切削具により穿孔を行う場合その切削方向を予め設定しておく必要があり、そのためのガイド部材が使用されている。例えば、特許文献２では、人体部位の欠損部に被せて装着する冠状部材を備え、冠状部材には、目標穿孔位置まで作業装置を案内するために上下方向に貫通するガイド孔を設け、ガイド孔から側方に向かって開放された上下方向のスリットを有するガイド部材が記載されている。また、特許文献３では、ガイド溝が形成されたインプラント植立ガイドが図８に記載されている。
特開平６−３０４１８７号公報 特許２００６−３４１０６７号公報 特開２００８−７３４４０号公報 When drilling with a cutting tool, it is necessary to set the cutting direction in advance, and a guide member for that purpose is used. For example, Patent Document 2 includes a coronal member that is attached to a missing part of a human body part, and the coronal member is provided with a guide hole penetrating in the vertical direction to guide the working device to a target drilling position. The guide member which has the slit of the up-down direction opened toward the side from is described. Moreover, in patent document 3, the implant planting guide in which the guide groove was formed is described in FIG.
JP-A-6-304187 Japanese Patent No. 2006-341067 JP 2008-73440 A

特許文献２及び３に記載されているようなガイド部材では、切削具を案内するために上下方向にスリット状に形成された溝を用いているが、こうした溝をガイド面とする場合切削具を横方向から挿入して容易に位置決めできる反面、穿孔動作中に切削具が溝内を揺動しやすくなって安定した穿孔動作が行なえないといったデメリットがある。   In the guide members as described in Patent Documents 2 and 3, a groove formed in a slit shape in the vertical direction is used to guide the cutting tool. When such a groove is used as a guide surface, the cutting tool is used. Although it can be easily positioned by inserting from the side, there is a demerit that the cutting tool easily swings in the groove during the drilling operation and a stable drilling operation cannot be performed.

そこで、本発明は、切削具を容易にセットすることができるとともに安定した穿孔動作を行うことができる医療用切削具のガイド部材及びそれに挿着可能な医療用切削具を提供することを目的とするものである。   Then, this invention aims at providing the guide member of the medical cutting tool which can set a cutting tool easily, and can perform the stable drilling operation, and the medical cutting tool which can be inserted in it. To do.

本発明に係る医療用切削具のガイド部材は、先端部側に切削部を設けるとともに中心軸を中心に回転させて切削動作を行なう医療用切削具のガイド部材であって、施術部位に装着可能に形成された本体部と、前記医療用切削具の外周面の外径と同じかわずかに大きい内径を有するガイド面が前記本体部に上下方向に貫通して形成されるとともに切削方向に前記医療用切削具をガイドするガイド部と、前記ガイド部を上下方向に切り欠いて前記ガイド部の内径よりも狭い幅に形成されたスリット溝部とを備え、前記スリット溝部の幅は、前記医療用切削具の外周面の外径よりも狭く当該外周面の一部を切り欠いて細幅に形成された挿入部の幅よりも広く設定されており、前記挿入部を前記スリット溝部に挿入することで前記ガイド部に対して前記医療用切削具を横方向から挿着することを特徴とする。さらに、前記ガイド部は、前記スリット溝部に対応するスリットを有する円筒状部材を前記本体部に固定して形成されていることを特徴とする。   The guide member of the medical cutting tool according to the present invention is a guide member for a medical cutting tool that is provided with a cutting portion on the distal end side and rotates around a central axis, and can be attached to a treatment site. And a guide surface having an inner diameter that is the same as or slightly larger than the outer diameter of the outer peripheral surface of the medical cutting tool is formed so as to penetrate the main body portion in the vertical direction and the medical device in the cutting direction. A guide portion that guides the cutting tool, and a slit groove portion that is formed by cutting the guide portion in a vertical direction and having a width narrower than an inner diameter of the guide portion, and the width of the slit groove portion is the medical cutting It is set to be narrower than the outer diameter of the outer peripheral surface of the tool and wider than the width of the insertion portion formed by narrowing a part of the outer peripheral surface, and inserting the insertion portion into the slit groove portion. Front to the guide Characterized by inserting the medical cutting tool from the side. Furthermore, the guide part is formed by fixing a cylindrical member having a slit corresponding to the slit groove part to the main body part.

本発明に係る医療用切削具は、上記のガイド部材のガイド部に挿着可能な医療用切削具であって、外周面の少なくとも一部の領域おいて外径が前記ガイド面の内径とほぼ同じかわずかに小さく設定されるとともに当該領域において外周面の一部を切り欠いて細幅に形成された挿入部を有することを特徴とする。   The medical cutting tool according to the present invention is a medical cutting tool that can be inserted into the guide portion of the guide member, and has an outer diameter that is substantially equal to an inner diameter of the guide surface in at least a partial region of the outer peripheral surface. It is characterized by having an insertion portion that is set to be the same or slightly smaller and is formed in a narrow width by cutting out a part of the outer peripheral surface in the region.

上記のような構成を有することで、スリット溝部の幅を医療用切削具の外周面の外径よりも狭く当該外周面の一部を切り欠いて細幅に形成された挿入部の幅よりも広く設定したので、医療用切削具をガイド部に容易に挿着することができるとともに医療切削具を回転させて穿孔動作を行う際に安定して動作させることが可能となる。   By having the configuration as described above, the width of the slit groove portion is narrower than the outer diameter of the outer peripheral surface of the medical cutting tool, and a part of the outer peripheral surface is cut out to be narrower than the width of the insertion portion formed. Since it is set widely, the medical cutting tool can be easily inserted into the guide portion, and at the same time, when the medical cutting tool is rotated to perform the drilling operation, the medical cutting tool can be stably operated.

すなわち、医療用切削具をガイド部に挿着する場合には、医療用切削具の挿入部をスリット溝部に対応させて横方向に挿入すれば、スリット溝部の幅が挿入部の幅より広く設定されているので、挿入部をスリット溝部に簡単に通過させることができガイド部に医療用切削具を容易に装着させることが可能となる。   That is, when inserting the medical cutting tool into the guide portion, if the insertion portion of the medical cutting tool is inserted in the lateral direction corresponding to the slit groove portion, the width of the slit groove portion is set wider than the width of the insertion portion. Therefore, the insertion portion can be easily passed through the slit groove portion, and the medical cutting tool can be easily attached to the guide portion.

また、ガイド部に挿着した状態で医療用切削具を回転させる場合、スリット溝部の幅が医療用切削具の外周面の外径よりも狭く設定されているため、回転動作中に医療用切削具がガイド部からスリット溝部に飛び出ることが確実に防止される。そのため、医療用切削具はガイド部内で安定した状態で回転するようになり、予め設定した切削方向に医療用切削具を正確にガイドすることができる。   In addition, when the medical cutting tool is rotated while being inserted into the guide portion, the width of the slit groove is set to be narrower than the outer diameter of the outer peripheral surface of the medical cutting tool. The tool is reliably prevented from jumping out of the guide portion into the slit groove portion. Therefore, the medical cutting tool rotates in a stable state within the guide portion, and the medical cutting tool can be accurately guided in a preset cutting direction.

また、ガイド部として、スリット溝部に対応するスリットを有する円筒状部材を本体部に固定して用いることで、回転動作に対して滑りのよい耐摩耗性の高い材料を円筒状部材に用いて回転動作をスムーズに行なうことができるようになる。そして、円筒状部材を予め正確に成形加工して本体部に固定すれば、ガイド部の内周面の精度を高めることができ、医療用切削具の切削方向を高精度に設定することが可能となる。   In addition, a cylindrical member having a slit corresponding to the slit groove portion is used as a guide portion, which is fixed to the main body portion, so that the cylindrical member can be rotated using a highly wear-resistant material that is slippery with respect to the rotation operation. The operation can be performed smoothly. Then, if the cylindrical member is accurately molded in advance and fixed to the main body, the accuracy of the inner peripheral surface of the guide can be increased, and the cutting direction of the medical cutting tool can be set with high accuracy. It becomes.

また、ガイド部材を製造する場合に、予め成形加工した円筒状部材を固定してガイド部を形成すれば、本体部を直接加工してガイド部を形成する場合に比べて精度の高いガイド部材を容易に製造することができる。   In addition, when a guide member is manufactured, if a guide member is formed by fixing a previously formed cylindrical member, a guide member with higher accuracy than that in the case of forming the guide portion by directly processing the main body portion is provided. It can be manufactured easily.

以下、本発明に係る実施形態について詳しく説明する。なお、以下に説明する実施形態は、本発明を実施するにあたって好ましい具体例であるから、技術的に種々の限定がなされているが、本発明は、以下の説明において特に本発明を限定する旨明記されていない限り、これらの形態に限定されるものではない。   Hereinafter, embodiments according to the present invention will be described in detail. The embodiments described below are preferable specific examples for carrying out the present invention, and thus various technical limitations are made. However, the present invention is particularly limited in the following description. Unless otherwise specified, the present invention is not limited to these forms.

図１は、本発明に係る実施形態に関する外観斜視図である。ガイド部材１は、歯科治療に使用するもので、患者の歯列に装着する本体部１０、インプラントを装着するための穿孔作業を行う切削具を切削方向にガイドするガイド部１１、ガイド部１１の側方を切り欠いて開口したスリット溝部１２を備えている。   FIG. 1 is an external perspective view of an embodiment according to the present invention. The guide member 1 is used for dental treatment, and includes a main body portion 10 to be mounted on a patient's dentition, a guide portion 11 for guiding a cutting tool for performing a drilling operation for mounting an implant in a cutting direction, and a guide portion 11. The slit groove part 12 opened by notching a side is provided.

本体部１０は、公知の樹脂材料を用いて形成される。樹脂材料としては、例えば、塩化ビニル樹脂、酢酸ビニル樹脂、ポリエステル樹脂、ＡＢＳ樹脂、アクリル樹脂、フッ素樹脂、ポリアミド樹脂、アセタール樹脂、ポリカーボネイト等が用いられる。インプラントの施術を行う際の利便性を考慮して、樹脂材料は透明又は半透明のものが好ましい。   The main body 10 is formed using a known resin material. Examples of the resin material include vinyl chloride resin, vinyl acetate resin, polyester resin, ABS resin, acrylic resin, fluororesin, polyamide resin, acetal resin, and polycarbonate. In view of convenience when performing an implant operation, the resin material is preferably transparent or translucent.

本体部１０は、患者の歯列を型取りした形成した石膏等の歯型に溶融状態の樹脂材料を被覆するように密着させて固化させることで成形される。そのため、本体部１０の下面は、歯型に密着した形状に成形することができる。なお、板状の樹脂材料を加熱し柔かくした状態で歯型に上方から押し付けることで密着した形状にすることもできる。   The main body 10 is molded by closely adhering a molten resin material to a dental mold such as gypsum formed by shaping a patient's dentition. Therefore, the lower surface of the main body 10 can be formed into a shape that is in close contact with the tooth mold. In addition, it can also be set as the shape closely_contact | adhered by pressing a plate-shaped resin material to the tooth type | mold from the upper side in the softened state.

ガイド部１１は、図２に示すような円筒状部材１１０が本体部１０に埋め込まれて固定されることで形成されている。円筒状部材１１０は、本体部１０を上下方向に貫通しており、内周面が切削具を切削方向にガイドするガイド面となる。円筒状部材１１０には、所定幅で上下方向に切り欠いてスリット１１１が形成されている。   The guide portion 11 is formed by a cylindrical member 110 as shown in FIG. 2 being embedded and fixed in the main body portion 10. The cylindrical member 110 penetrates the main body portion 10 in the vertical direction, and the inner peripheral surface serves as a guide surface that guides the cutting tool in the cutting direction. The cylindrical member 110 is formed with a slit 111 that is cut out in a vertical direction with a predetermined width.

図３は、ガイド部１１に関する上面図である。スリット１１１の幅ｄは、円筒状部材１１０の内周面の内径Ｄよりも狭くなるように設定されている。また、円筒状部材１１０の内径Ｄは、ガイド部１１に挿着する切削具の外周面の外径とほぼ同じかわずかに大きくなるように設定されており、挿着された切削具がガイド部１１内でがたつくことなく安定して回転動作が行なわれるようになっている。そして、スリット１１１の幅ｄが内径Ｄよりも狭いため、回転動作中の切削具がスリット１１１にずれることはない。   FIG. 3 is a top view of the guide portion 11. The width d of the slit 111 is set to be narrower than the inner diameter D of the inner peripheral surface of the cylindrical member 110. Further, the inner diameter D of the cylindrical member 110 is set to be substantially the same as or slightly larger than the outer diameter of the outer peripheral surface of the cutting tool to be inserted into the guide portion 11, and the inserted cutting tool is the guide portion. Thus, the rotation operation can be performed stably without shaking. Since the width d of the slit 111 is narrower than the inner diameter D, the cutting tool that is rotating is not shifted to the slit 111.

円筒状部材１１０は、後述するように、歯型に穿設されたインプラント用の埋め込み孔にセットされた金属棒に予め装着しておき、金属棒を歯型にセットした状態で本体部１０を形成する樹脂材料により歯型を被覆して固化させることで、インプラントを埋め込むための切削方向に沿って正確に位置決めすることができる。   As will be described later, the cylindrical member 110 is mounted in advance on a metal rod set in an implantation hole for an implant drilled in a tooth mold, and the main body portion 10 is placed in a state where the metal rod is set in the tooth mold. By covering and solidifying the tooth mold with the resin material to be formed, it is possible to accurately position along the cutting direction for embedding the implant.

円筒状部材１１０に用いる材料としては、高強度、耐摩耗性、摺動特性に優れた樹脂材料又は金属材料が好ましく、また、切削具がガイド部１１内で回転動作中に削り取られて外部に飛散することも考慮して人体に無害なものを選択することが望ましい。例えば、樹脂材料としてはポリアセタールが好ましく、金属材料としてはチタンが好ましい。   The material used for the cylindrical member 110 is preferably a resin material or a metal material having high strength, wear resistance, and excellent sliding characteristics. Further, the cutting tool is scraped off during the rotation operation in the guide portion 11 to the outside. It is desirable to select one that is harmless to the human body in consideration of scattering. For example, polyacetal is preferable as the resin material, and titanium is preferable as the metal material.

スリット溝部１２は、円筒状部材１１０のスリット１１１から側方に延設するように本体部１０を溝状に切り欠いて形成されている。スリット溝部１２の溝幅は、図３に示すように、スリット１１１の幅と同じか広くなるように設定されており、溝幅を末広がりに形成すれば切削具を容易に挿着することができる。   The slit groove portion 12 is formed by cutting the main body portion 10 into a groove shape so as to extend laterally from the slit 111 of the cylindrical member 110. As shown in FIG. 3, the groove width of the slit groove portion 12 is set to be the same as or wider than the width of the slit 111, and if the groove width is formed widen, the cutting tool can be easily inserted. .

図４は、ガイド部材１に挿着する切削具２０に関する斜視図であり、図５は、切削具の正面図（図５（ａ））及び側面図（図５（ｂ））である。切削具２０は、支持部材２１及び切削部材２２を備えている。支持部材２１は、棒状に形成されており、上端部に図示せぬハンドピースに取り付けるための係止部２３が形成されている。切削部材２２は、円筒状に形成されており、下端部に鋸状の切削部２４が形成されている。   4 is a perspective view of the cutting tool 20 to be inserted into the guide member 1, and FIG. 5 is a front view (FIG. 5 (a)) and a side view (FIG. 5 (b)) of the cutting tool. The cutting tool 20 includes a support member 21 and a cutting member 22. The support member 21 is formed in a rod shape, and an engaging portion 23 for attaching to a handpiece (not shown) is formed at the upper end portion. The cutting member 22 is formed in a cylindrical shape, and a saw-like cutting portion 24 is formed at the lower end portion.

切削部材２２の外周面には、複数のラインからなるスケール２５が表示されており、スケール２５により切削部材２２の穿孔した深さを確認することができる。また、スケール２５のラインの間には、矩形状の一対の開口部２６が中心軸に対して対称となる位置に穿設されている。開口部２６の下端側には、別の一対の開口部２７が開口部２６と同様に穿設されている。これらの開口部２６及び２７を形成することで、切削部２０の穿孔動作中に切削部材２２の内部に溜まった切削物を取り出すことができる。   A scale 25 including a plurality of lines is displayed on the outer peripheral surface of the cutting member 22, and the depth of drilling of the cutting member 22 can be confirmed by the scale 25. Further, between the lines of the scale 25, a pair of rectangular openings 26 are formed at positions that are symmetrical with respect to the central axis. On the lower end side of the opening 26, another pair of openings 27 is formed in the same manner as the opening 26. By forming these openings 26 and 27, it is possible to take out the cut material accumulated in the cutting member 22 during the drilling operation of the cutting part 20.

開口部２７と切削部２４との間には、挿入部２８が形成されている。挿入部２８は、中心軸から両側に同じ幅の位置で切り欠くことで、切削部材２２の外周面の外径Ｄ’よりも狭い幅ｄ’に設定されている。切削部材２２の外径Ｄ’は、円筒状部材１１０の内径Ｄとほぼ同じかわずかに小さくなるように設定されており、挿入部２８の幅ｄ’は、円筒状部材１１０のスリット１１１の幅ｄよりもわずかに小さくなるように設定されている。また、挿入部２８の長さは、円筒状部材１１０の長さよりもわずかに長く設定されている。   An insertion portion 28 is formed between the opening 27 and the cutting portion 24. The insertion portion 28 is set to have a width d 'narrower than the outer diameter D' of the outer peripheral surface of the cutting member 22 by notching at positions of the same width on both sides from the central axis. The outer diameter D ′ of the cutting member 22 is set to be substantially the same as or slightly smaller than the inner diameter D of the cylindrical member 110, and the width d ′ of the insertion portion 28 is the width of the slit 111 of the cylindrical member 110. It is set to be slightly smaller than d. Further, the length of the insertion portion 28 is set slightly longer than the length of the cylindrical member 110.

図６から図１０は、ガイド部材１の製造工程に関する説明図である。図６は、患者の歯型に関する斜視図であり、Ｕ字状の基台５０の上部に歯列５１が形成されている。そして、インプラントを埋め込む部位には、埋め込み孔５２が予め穿設されている。埋め込み孔５２は、患者の施術部位を撮影したＸ線画像等に基づいて決められた埋め込み方向に沿って穿設される。   6-10 is explanatory drawing regarding the manufacturing process of the guide member 1. FIG. FIG. 6 is a perspective view of a patient's tooth pattern, and a tooth row 51 is formed on an upper portion of a U-shaped base 50. And the embedding hole 52 is previously drilled in the site | part which embeds an implant. The embedding hole 52 is formed along an embedding direction determined based on an X-ray image obtained by imaging a treatment site of a patient.

図７では、患者の歯型に穿設された埋め込み孔５２に切削具の切削部材２２と同一径の金属棒６０を挿着する。金属棒６０には、円筒状部材１１０が嵌合して取り付けられている。円筒状部材１１０の取付位置は、切削具が円筒状部材１１０に挿着された場合に切削部２４が歯肉に接触しないように所定の高さに設定する。   In FIG. 7, a metal rod 60 having the same diameter as that of the cutting member 22 of the cutting tool is inserted into the embedded hole 52 formed in the patient's tooth mold. A cylindrical member 110 is fitted and attached to the metal rod 60. The attachment position of the cylindrical member 110 is set to a predetermined height so that the cutting portion 24 does not contact the gingiva when the cutting tool is inserted into the cylindrical member 110.

図８では、金属棒６０が挿着された状態で歯列全体を溶融した樹脂材料で被覆するように密着させる。その際に、金属棒６０に取り付けた円筒状部材１１０を樹脂材料で埋めるように密着させ、スリット１１１に対応する部分は切り欠いた状態になるように成形する。こうして樹脂材料を固化させてガイド部材１の本体部１０を成形する。   In FIG. 8, the entire tooth row is closely attached with a molten resin material in a state where the metal rod 60 is inserted. At that time, the cylindrical member 110 attached to the metal rod 60 is closely attached so as to be filled with a resin material, and the portion corresponding to the slit 111 is formed in a notched state. Thus, the resin material is solidified to mold the main body 10 of the guide member 1.

図９では、固化した本体部１０を歯型から取り外し、円筒状部材１１０から金属棒６０を引き抜くことで、ガイド部１１が形成されたガイド部材１を成形することができる。そして、円筒状部材１１０は金属棒６０に嵌合したままの状態で固定されるため、円筒状部材１１０の内周面はインプラントの埋め込み方向である切削方向にガイドするように設定される。ガイド部１１のスリット１１１に対応する部分にはスリット状の溝７０が形成されている。   In FIG. 9, by removing the solidified main body 10 from the tooth mold and pulling out the metal rod 60 from the cylindrical member 110, the guide member 1 on which the guide portion 11 is formed can be molded. Since the cylindrical member 110 is fixed while being fitted to the metal rod 60, the inner peripheral surface of the cylindrical member 110 is set so as to guide in the cutting direction which is the implant embedding direction. A slit-like groove 70 is formed in a portion corresponding to the slit 111 of the guide portion 11.

図１０では、円筒状部材１１０の下面から下方の樹脂材料を削り取り、溝７０についてもスリット１１１から末広がりになるように削り取ってガイド部１１及びスリット溝部１２の仕上げ加工を行う。   In FIG. 10, the resin material below is cut off from the lower surface of the cylindrical member 110, and the groove 70 is also cut away from the slit 111 to finish the guide portion 11 and the slit groove portion 12.

以上のように製造することで、予め成形された円筒状部材１１０をインプラントの埋め込み方向である切削具の切削方向に正確に位置決めしてガイド部材１を成形することができる。また、本体部１０の下面は患者の歯型に合致した形状に成形されるので、施術の際に患者の歯列に密着してガイド部材１を装着することができ、切削具の回転動作中にぶれることがなく安定した状態で穿孔作業を行うことが可能となる。   By manufacturing as described above, the guide member 1 can be formed by accurately positioning the previously formed cylindrical member 110 in the cutting direction of the cutting tool, which is the implant embedding direction. In addition, since the lower surface of the main body 10 is formed into a shape that matches the patient's tooth shape, the guide member 1 can be attached in close contact with the patient's teeth during the operation, and the cutting tool is rotating. The drilling operation can be performed in a stable state without shaking.

以上の製造工程では、溶融した樹脂材料を円筒状部材とともに固化して固定するようにしているが、溶融した樹脂材料を歯型に合せて一旦固化させて本体部を形成した後円筒状部材が固定される部分を削除し、削除した部分に円筒状部材を嵌合した金属棒を位置決めして本体部との間を溶融した樹脂材料により接着するようにしてもよい。板状の樹脂材料を用いて本体部を成形する場合にも円筒状部材を固定する部分を削除して円筒状部材を接着固定すればよい。   In the above manufacturing process, the molten resin material is solidified and fixed together with the cylindrical member. However, after the molten resin material is solidified according to the tooth mold and the main body portion is formed, the cylindrical member is The fixed part may be deleted, and the metal rod fitted with the cylindrical member may be positioned in the deleted part and bonded to the main body part by a molten resin material. Even when the main body is molded using a plate-shaped resin material, the cylindrical member may be bonded and fixed by deleting the portion for fixing the cylindrical member.

図１１から図１３は、ガイド部材１に切削具２０を挿着する場合の過程を示す説明図である。ガイド部材１は、図１１に示すように、患者の歯列に装着してガイド部１１をインプラントの施術部位に正確に位置決めする。ガイド部材１をセットした後、図１２に示すように、切削具２０を取り付けたハンドピースＨをガイド部１１の横方向からスリット溝部１２に沿って導入する。その際に、切削具２０の切削部材２２に形成された挿入部２８をスリット溝部１２に対向させて挿入する。図１４（ａ）は、ガイド部１１の円筒状部材１１０に挿入部２８を挿着した状態を示す断面図である。挿入部２８の幅がスリット１１の幅よりもわずかに小さいため、挿入部２８からのみ切削具２０を円筒状部材１１０に挿着することができる。   FIG. 11 to FIG. 13 are explanatory views showing a process when the cutting tool 20 is inserted into the guide member 1. As shown in FIG. 11, the guide member 1 is attached to the patient's dentition to accurately position the guide portion 11 at the implant site. After setting the guide member 1, as shown in FIG. 12, the handpiece H to which the cutting tool 20 is attached is introduced along the slit groove portion 12 from the lateral direction of the guide portion 11. At that time, the insertion portion 28 formed on the cutting member 22 of the cutting tool 20 is inserted to face the slit groove portion 12. FIG. 14A is a cross-sectional view showing a state where the insertion portion 28 is inserted into the cylindrical member 110 of the guide portion 11. Since the width of the insertion portion 28 is slightly smaller than the width of the slit 11, the cutting tool 20 can be inserted into the cylindrical member 110 only from the insertion portion 28.

そして、挿入部２８を円筒状部材１１０に装着した後切削具２０を回転させれば、挿入部２８がスリット１１１とずれるため切削具２０はスリット１１１から抜け出ることなく円筒状部材１１０内に安定した状態で保持される。   If the cutting tool 20 is rotated after the insertion portion 28 is mounted on the cylindrical member 110, the insertion portion 28 is displaced from the slit 111, so that the cutting tool 20 is stabilized in the cylindrical member 110 without coming out of the slit 111. Held in a state.

切削具２０は、円筒状部材１１０内に保持されると切削方向にガイドされるようになる。そして、図１３に示すように、切削具２０を回転駆動することにより切削部２４が歯肉Ｍに食い込んでいき、円形状の孔を穿孔するように動作するようになる。穿孔動作による深さは、切削部材２２に表示されたスケールをチェックすることで所定の深さまで正確に穿孔することができる。   When the cutting tool 20 is held in the cylindrical member 110, the cutting tool 20 is guided in the cutting direction. Then, as shown in FIG. 13, when the cutting tool 20 is rotationally driven, the cutting portion 24 bites into the gingiva M and operates to drill a circular hole. The depth by the drilling operation can be accurately drilled to a predetermined depth by checking the scale displayed on the cutting member 22.

図１４（ａ）は、ガイド部１１の円筒状部材１１０内で切削部材２２の挿入部２８が回転する状態を示す状態を示す断面図である。切削部材２２は、円筒状部材１１０内で高速に回転するため、スリット１１１から挿入部２８が外れることはほとんどなくなる。そして、挿入部２８の長さは円筒状部材１１０の長さよりもわずかに長く設定されているので、切削部材２２が穿孔動作により下方に移動していくと、挿入部２８が円筒状部材１１０から軸方向にずれるようになって切削部材２２が円筒状部材１１０から外れることなく安定した回転動作を行なうことができる。   FIG. 14A is a cross-sectional view showing a state in which the insertion portion 28 of the cutting member 22 rotates in the cylindrical member 110 of the guide portion 11. Since the cutting member 22 rotates at a high speed in the cylindrical member 110, the insertion portion 28 is hardly detached from the slit 111. Since the length of the insertion portion 28 is set slightly longer than the length of the cylindrical member 110, when the cutting member 22 moves downward by the drilling operation, the insertion portion 28 is moved away from the cylindrical member 110. The cutting member 22 is displaced in the axial direction, and a stable rotation operation can be performed without the cutting member 22 being detached from the cylindrical member 110.

したがって、切削部材２２がぶれることなく穿孔動作を行なうことができ、インプラント用の埋め込み穴を設計通りに形成することが可能となる。   Therefore, the drilling operation can be performed without the cutting member 22 being shaken, and the embedding hole for the implant can be formed as designed.

本発明に係る医療用切削具のガイド部材は、歯科、口腔外科、整形外科等の外科手術において、骨にインプラント用の埋め込み孔を穿孔する際に好適に用いることができる。   The guide member of the medical cutting tool according to the present invention can be suitably used for drilling an implantation hole for an implant in a bone in a surgical operation such as dentistry, oral surgery, and orthopedic surgery.

本発明に係る実施形態に関する外観斜視図である。It is an external appearance perspective view regarding embodiment which concerns on this invention. 円筒状部材に関する斜視図である。It is a perspective view regarding a cylindrical member. ガイド部に関する上面図である。It is a top view regarding a guide part. 切削具に関する斜視図である。It is a perspective view regarding a cutting tool. 切削具に関する正面図及び側面図である。It is the front view and side view regarding a cutting tool. ガイド部材の製造工程に関する説明図である。It is explanatory drawing regarding the manufacturing process of a guide member. ガイド部材の製造工程に関する説明図である。It is explanatory drawing regarding the manufacturing process of a guide member. ガイド部材の製造工程に関する説明図である。It is explanatory drawing regarding the manufacturing process of a guide member. ガイド部材の製造工程に関する説明図である。It is explanatory drawing regarding the manufacturing process of a guide member. ガイド部材の製造工程に関する説明図である。It is explanatory drawing regarding the manufacturing process of a guide member. ガイド部材に切削具を挿着する過程に関する説明図である。It is explanatory drawing regarding the process of inserting a cutting tool in a guide member. ガイド部材に切削具を挿着する過程に関する説明図である。It is explanatory drawing regarding the process of inserting a cutting tool in a guide member. ガイド部材に切削具を挿着する過程に関する説明図である。It is explanatory drawing regarding the process of inserting a cutting tool in a guide member. 円筒状部材内に挿入部が挿着された状態に関する断面図である。It is sectional drawing regarding the state by which the insertion part was inserted in the cylindrical member.

符号の説明Explanation of symbols

１ ガイド部材
10 本体部
11 ガイド部
12 スリット溝部
110 円筒状部材
111 スリット
20 切削具
21 支持部材
22 切削部材
24 切削部
28 挿入部 1 Guide member
10 Main unit
11 Guide section
12 Slit groove
110 Cylindrical member
111 slits
20 Cutting tool
21 Support member
22 Cutting material
24 Cutting part
28 Insertion section

Claims (3)

先端部側に切削部を設けるとともに中心軸を中心に回転させて切削動作を行なう医療用切削具のガイド部材であって、施術部位に装着可能に形成された本体部と、前記医療用切削具の外周面の外径と同じかわずかに大きい内径を有するガイド面が前記本体部に上下方向に貫通して形成されるとともに切削方向に前記医療用切削具をガイドするガイド部と、前記ガイド部を上下方向に切り欠いて前記ガイド部の内径よりも狭い幅に形成されたスリット溝部とを備え、前記スリット溝部の幅は、前記医療用切削具の外周面の外径よりも狭く当該外周面の一部を切り欠いて細幅に形成された挿入部の幅よりも広く設定されており、前記挿入部を前記スリット溝部に挿入することで前記ガイド部に対して前記医療用切削具を横方向から挿着することを特徴とする医療用切削具のガイド部材。   A medical cutting tool guide member that is provided with a cutting portion on the distal end side and rotates around a central axis to perform a cutting operation, and a main body portion that can be attached to a treatment site, and the medical cutting tool A guide surface having an inner diameter that is the same as or slightly larger than the outer diameter of the outer peripheral surface of the outer peripheral surface is formed through the main body portion in the vertical direction and guides the medical cutting tool in the cutting direction, and the guide portion And a slit groove formed in a width narrower than the inner diameter of the guide portion, and the width of the slit groove portion is narrower than the outer diameter of the outer peripheral surface of the medical cutting tool. The medical cutting tool is set to be wider than the width of the insertion portion formed by cutting out a part of the guide portion and the insertion portion is inserted into the slit groove portion. To insert from the direction Medical cutting tool guide members to symptoms. 前記ガイド部は、前記スリット溝部に対応するスリットを有する円筒状部材を前記本体部に固定して形成されていることを特徴とする請求項１に記載のガイド部材。   The guide member according to claim 1, wherein the guide portion is formed by fixing a cylindrical member having a slit corresponding to the slit groove portion to the main body portion. 請求項１又は２に記載のガイド部材のガイド部に挿着可能な医療用切削具であって、外周面の少なくとも一部の領域おいて外径が前記ガイド面の内径とほぼ同じかわずかに小さく設定されるとともに当該領域において外周面の一部を切り欠いて細幅に形成された挿入部を有することを特徴とする医療用切削具。   It is a medical cutting tool which can be inserted in the guide part of the guide member of Claim 1 or 2, Comprising: An outer diameter is substantially the same as the inner diameter of the said guide surface in at least one part area | region of an outer peripheral surface, or slightly. A medical cutting tool characterized by having an insertion portion that is set to be small and is formed by narrowing a part of the outer peripheral surface in the region.
JP2008143798A 2007-06-01 2008-05-30 Guide member for medical cutting tool, and medical cutting tool to be inserted to the same Pending JP2009285358A (en)

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JP2008143798A JP2009285358A (en) 2008-05-30 2008-05-30 Guide member for medical cutting tool, and medical cutting tool to be inserted to the same
CN2012104475710A CN102940517A (en) 2007-06-01 2008-05-31 Medical cutting tool,its guide member,and cut bone sampling tool
CN200880000399.6A CN101541254B (en) 2007-06-01 2008-05-31 Medical cutting tool
PCT/JP2008/060083 WO2008149822A1 (en) 2007-06-01 2008-05-31 Medical cutting tool, its guide member, and cut bone sampling tool
KR1020087031706A KR20100021954A (en) 2007-06-01 2008-05-31 Medical cutting tool, its guide member, and cut bone sampling tool

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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KR20130126450A (en) * 2010-09-21 2013-11-20 이사오 아쿠쯔 Surgical guide making tool and surgical guide making method
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USRE46813E1 (en) 2010-11-17 2018-05-01 Winverts, Inc. Tooth preparation guide device and method of preparing tooth for dental prosthesis
JP2018089469A (en) * 2018-03-14 2018-06-14 株式会社ＤｅｎｔａｌＢａｎｋ Guide instrument for using dental cutting apparatus
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US11007035B2 (en) 2017-03-16 2021-05-18 Viax Dental Technologies Llc System for preparing teeth for the placement of veneers
US11033356B2 (en) 2011-05-26 2021-06-15 Cyrus Tahmasebi Dental tool and guidance devices
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US11253961B2 (en) 2009-02-02 2022-02-22 Viax Dental Technologies Llc Method for restoring a tooth
US11813127B2 (en) 2009-02-02 2023-11-14 Viax Dental Technologies Llc Tooth restoration system
JP7483289B2 (en) 2022-04-18 2024-05-15 株式会社ルッキン Osteotomes for dental treatment, hole forming instruments, test posts, stopper extensions, periodontal ligament guards, water flow tubes

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0159113U (en) * 1987-10-07 1989-04-13
JPH067382A (en) * 1992-03-19 1994-01-18 Nikon Corp Dental or surgical drill for implant
JP2006519038A (en) * 2003-02-28 2006-08-24 マテリアライズ・ナムローゼ・フエンノートシャップ Method for placing and manufacturing a dental superstructure, method for placing an implant, and accessories used thereby
JP2006341067A (en) * 2005-05-09 2006-12-21 Icat:Kk Guide material for medical application

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0159113U (en) * 1987-10-07 1989-04-13
JPH067382A (en) * 1992-03-19 1994-01-18 Nikon Corp Dental or surgical drill for implant
JP2006519038A (en) * 2003-02-28 2006-08-24 マテリアライズ・ナムローゼ・フエンノートシャップ Method for placing and manufacturing a dental superstructure, method for placing an implant, and accessories used thereby
JP2006341067A (en) * 2005-05-09 2006-12-21 Icat:Kk Guide material for medical application

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