JPH04361746A - Dental bone processing tool and device - Google Patents

Dental bone processing tool and device

Info

Publication number
JPH04361746A
JPH04361746A JP3136566A JP13656691A JPH04361746A JP H04361746 A JPH04361746 A JP H04361746A JP 3136566 A JP3136566 A JP 3136566A JP 13656691 A JP13656691 A JP 13656691A JP H04361746 A JPH04361746 A JP H04361746A
Authority
JP
Japan
Prior art keywords
hole
diameter rotary
machining
artificial tooth
tooth root
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
JP3136566A
Other languages
Japanese (ja)
Inventor
Kiyoshi Inoue
潔 井上
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.)
INR Kenkyusho KK
Original Assignee
INR Kenkyusho KK
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 INR Kenkyusho KK filed Critical INR Kenkyusho KK
Priority to JP3136566A priority Critical patent/JPH04361746A/en
Priority to EP19920305155 priority patent/EP0517529A3/en
Publication of JPH04361746A publication Critical patent/JPH04361746A/en
Pending legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0089Implanting tools or instruments

Abstract

PURPOSE:To provide a bone processing tool and device, with which a groove and hole for implantation of artificial tooth root can be processed in a jaw bone simultaneously and precisely. CONSTITUTION:A major dia. rotary cutter or cutters 4, 4 are mounted on a rotary shaft 3 of a bone processing tool concerned, and minor dia. rotary cutters 5, 5 are installed in between and on the outsides. It is recommendable that different sorts of minor dia. rotary cutters 5, 5 having a unit thickness of diameter corresponding to the shape of hole to be processed are prepared in combination and stacked firmly. The device used upon mounting of this bone processing tool is equipped with an arrangement to spout cooling water to the part with rotary cutters. This permits simultaneous processing of groove and hole, which should allow precise location of them to lead to enhancement of the processing accuracy, and an artificial tooth root can be implanted stably and sturdily.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】本発明は、顎骨に人工歯根を植え
込むための穴を加工する骨加工工具及び装置に関するも
のである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bone machining tool and device for machining a hole for implanting an artificial tooth root in a jawbone.

【0002】0002

【従来の技術】従来、1枚若しくは平行に配置した複数
枚のブレードと、該ブレードによって支持される頭部よ
りなる人工歯根が知られている。図1は、2枚のブレー
ドを有する人工歯根の一例で、(a)が正面図、(b)
が側面図、(c)が底面図であって、2枚のブレード1
,1 は所要半径の円弧を2つ連ねた形状の植込み先端
1aを有し、このブレードの円弧の各中心位置にそれぞ
れ頭部2,2 を結合して2枚のブレード1,1 を所
定間隔で平行に結合して成るものである。また頭部2,
2 の下端2aは上記ブレード1,1 の円弧と同心の
半球形となるように形成されている。即ち、(c)図に
示すように人工歯根の頭部の下端外周は円形であり、且
つその直径は2枚のブレード1,1 間の間隔より大き
く、ブレードの外側に膨出している。なお、1bは骨の
再生、保持性を良好にするためブレード1に明けた孔、
2bは頭部に設けられた孔で人工歯根を骨から引き抜く
時に利用するためのものである。
BACKGROUND OF THE INVENTION Conventionally, artificial tooth roots have been known which consist of one blade or a plurality of blades arranged in parallel, and a head supported by the blades. Figure 1 shows an example of an artificial tooth root with two blades, (a) is a front view, (b)
is a side view, and (c) is a bottom view, showing two blades 1.
, 1 has an implant tip 1a in the shape of two circular arcs of a required radius connected, and a head 2, 2 is connected to each central position of the circular arc of this blade, so that the two blades 1, 1 are spaced at a predetermined interval. They are connected in parallel with each other. Also head 2,
The lower end 2a of the blades 1, 1 is formed in a hemispherical shape concentric with the arc of the blades 1, 1. That is, as shown in figure (c), the outer periphery of the lower end of the head of the artificial tooth root is circular, and its diameter is larger than the distance between the two blades 1, 1, and it bulges out to the outside of the blades. In addition, 1b is a hole drilled in the blade 1 to improve bone regeneration and retention.
2b is a hole provided in the head for use when pulling out the artificial tooth root from the bone.

【0003】而して、このような人工歯根を顎骨に植え
込むには、歯槽頂に沿って骨に溝加工及び穴加工を施さ
なければならないが、従来はブレード1,1 を植え込
む溝の加工と、頭部2,2 の下端に嵌合する穴の加工
とを工具を取り換えながら別々に加工するようにしてい
たから、加工した溝とその中心位置に加工する穴の位置
がずれたり、加工穴が曲がったりし、そのため人工歯根
の植込み状態が安定しなかったり、強固に固定支持され
なかったりする欠点があった。
[0003] In order to implant such an artificial tooth root into the jawbone, it is necessary to create a groove and a hole in the bone along the alveolar crest. Since the holes that fit into the lower ends of the heads 2 and 2 were machined separately while changing tools, the positions of the grooves that were machined and the holes that were machined at their center positions were misaligned, or the holes that were machined were bent. As a result, the implanted state of the artificial tooth root may not be stable or it may not be firmly fixed and supported.

【0004】0004

【発明が解決しようとする課題】本発明は、顎骨に対し
て人工歯根植込み用の溝と穴とを同時に加工することに
より両者の相対的な位置決めが正確になされ、加工精度
が高く、しかも加工は容易で、その加工穴への人工歯根
の植込みも安定且つ強固に行なわれるような骨加工工具
及び装置を提供することを目的とするものである。
[Problems to be Solved by the Invention] The present invention enables accurate relative positioning of the two by simultaneously machining grooves and holes for implanting artificial tooth roots in the jawbone, resulting in high machining accuracy. The object of the present invention is to provide a bone machining tool and device that allows easy and stable implantation of an artificial tooth root into the machined hole.

【0005】[0005]

【課題を解決するための手段】上記の目的は、複数枚の
ブレードを有する人工歯根の植込み用穴を加工する場合
には、回転軸に上記複数枚のブレードを植え込むための
複数条の溝を加工する複数枚の大径回転カッタを上記複
数枚のブレード間の間隔と等しい間隔で取り付けると共
に、上記複数枚の大径回転カッタの間及び最も外側の大
径回転カッタの外側に、人工歯根の頭部の下端が嵌合す
る穴を加工する小径回転カッタを取り付けて成ることを
特徴とする歯科用骨加工工具によって達成し得る。また
、ブレードが1枚の人工歯根の植込み用穴を加工する場
合には、回転軸に上記ブレードを植え込むための1条の
溝を加工する1枚の大径回転カッタを取り付けると共に
、その両面に、人工歯根の頭部の下端が嵌合する穴を加
工する小径回転カッタを取り付けて成ることを特徴とす
る歯科用骨加工工具によって達成し得る。なお、人工歯
根の頭部の下端が嵌合する穴を加工する上記小径回転カ
ッタは、加工する穴の形状に対応する直径の単位厚さの
回転カッタを複数種類組み合わせて積み重ね固定するよ
う構成することが推奨される。上記回転軸には冷却水を
通過せしめ得る流路を形成することが推奨される。
[Means for Solving the Problems] The above object is to create a plurality of grooves in the rotating shaft for implanting the plurality of blades when machining a hole for implanting an artificial tooth root having a plurality of blades. A plurality of large-diameter rotary cutters to be processed are attached at intervals equal to the spacing between the plurality of blades, and an artificial tooth root is installed between the plurality of large-diameter rotary cutters and outside the outermost large-diameter rotary cutter. This can be achieved by a dental bone machining tool characterized in that it is equipped with a small-diameter rotary cutter for machining a hole into which the lower end of the head fits. In addition, when machining a hole for implanting an artificial tooth root with one blade, one large-diameter rotary cutter for machining a single groove for implanting the blade is attached to the rotating shaft, and both sides of the cutter are attached to the rotating shaft. This can be achieved by a dental bone machining tool characterized in that it is equipped with a small-diameter rotary cutter for machining a hole into which the lower end of the head of an artificial tooth root fits. The small-diameter rotary cutter for machining the hole into which the lower end of the head of the artificial tooth root fits is constructed so that multiple types of rotary cutters with diameters and unit thicknesses corresponding to the shape of the hole to be machined are stacked and fixed in combination. It is recommended that It is recommended that the rotating shaft be provided with a flow path through which cooling water can pass.

【0006】また、上記の目的は、回転軸に上記1枚若
しくは複数枚のブレードを植え込むための溝を加工する
1枚若しくは複数枚の大径回転カッタを上記ブレード間
の間隔と等しい間隔で取り付けると共に、各大径回転カ
ッタの間及び最も外側の大径回転カッタの外側に、人工
歯根の頭部の下端が嵌合する穴を加工する小径回転カッ
タを取り付け、上記回転軸には冷却水を通過せしめ得る
流路を形成して成る骨加工工具と、上記骨加工工具をチ
ャックして高速回転せしめる回転装置と、上記骨加工工
具の回転軸内の流路に冷却水を圧入し回転カッタ部分に
噴出する冷却液供給装置と、を設けたことを特徴とする
歯科用骨加工装置によって達成し得る。
Furthermore, the above object is to attach one or more large-diameter rotary cutters for machining grooves for implanting the one or more blades on the rotating shaft at intervals equal to the spacing between the blades. At the same time, between each large-diameter rotary cutter and outside the outermost large-diameter rotary cutter, a small-diameter rotary cutter is installed to machine a hole into which the lower end of the head of the artificial tooth root fits, and cooling water is supplied to the rotary shaft. A bone machining tool comprising a flow path that can be passed through, a rotating device that chucks the bone machining tool and rotates it at high speed, and a rotary cutter portion that presses cooling water into the flow path in the rotating shaft of the bone machining tool. This can be achieved by a dental bone machining device characterized by being provided with a cooling liquid supply device that ejects a cooling liquid.

【0007】[0007]

【作用】上記の如く、本発明の骨加工工具は、回転軸に
1枚若しくは複数枚のブレードを植え込むための溝を加
工する所要枚数の大径回転カッタを上記ブレード間の間
隔と等しい間隔で取り付けると共に、各大径回転カッタ
の間及び最も外側の大径回転カッタの外側に、人工歯根
の頭部の下端が嵌合する穴を加工する小径回転カッタを
取り付けて成り、ブレードを植え込む溝の加工と、頭部
下端が嵌合する穴の加工とを同時に行なうようにしたも
のであるから、上記溝及び穴の位置が正確に出て加工精
度が高く、そのため、人工歯根ががたつくこと無く安定
して強固に植込み保持されるものである。
[Operation] As described above, the bone machining tool of the present invention has the required number of large-diameter rotary cutters for machining grooves for implanting one or more blades in the rotating shaft at intervals equal to the interval between the blades. At the same time, between each large-diameter rotary cutter and on the outside of the outermost large-diameter rotary cutter, a small-diameter rotary cutter is installed to machine a hole into which the lower end of the head of the artificial tooth root fits. Since the machining and the machining of the hole into which the lower end of the head fits are done at the same time, the positions of the grooves and holes are accurate, resulting in high machining accuracy, and as a result, the artificial tooth root is stable without wobbling. It is firmly implanted and retained.

【0008】又、人工歯根の頭部の下端が嵌合する穴を
加工する小径回転カッタは、加工する穴の形状に対応す
る直径の単位厚さの回転カッタを複数種類組み合わせて
積み重ね固定するよう構成したことにより、人工歯根の
頭部下端の形状に応じて任意の形状及び大きさに対応し
た小径回転カッタを容易に形成することができ、これに
より対応する穴の加工を容易にすることができる効果が
ある。
[0008] Furthermore, a small-diameter rotary cutter for machining a hole into which the lower end of the head of an artificial tooth root fits is made by stacking and fixing a combination of multiple types of rotary cutters each having a diameter and a unit thickness corresponding to the shape of the hole to be machined. With this configuration, it is possible to easily form a small-diameter rotary cutter that corresponds to any shape and size depending on the shape of the lower end of the head of the artificial tooth root, thereby facilitating the machining of the corresponding hole. There is an effect that can be done.

【0009】[0009]

【実施例】以下図面の一実施例により本発明を説明する
と、図2は図1に示したような2枚のブレードを有する
人工歯根に対応する本発明に係る歯科用骨加工工具の一
実施例を示しており、図2において(a)はその側面図
、(b)はその正面図である。図中、3は回転軸、4は
溝加工用の大径回転カッタで、その板厚は、図1に示し
た人工歯根のブレード1の厚さに相当する0.45〜0
.5mm 程度で、半径がブレード1の円弧半径に相当
し、周縁に加工用の刃を有する。この2枚の大径回転カ
ッタ4を人工歯根のブレードに相当する間隔を保って回
転軸3に固定する。5は、人工歯根の頭部2,2 の下
端に嵌合する穴を加工するための小径回転カッタで、こ
れは単位厚さ(例えば0.2mm)の回転カッタを、加
工する穴形状に対応する直径のものを複数枚組み合わせ
て積重し、回転軸3に固定したもので、図においては人
工歯根の頭部の下端の外形が半球体であり、これを嵌合
するために直径の異なる小径回転カッタを大径回転カッ
タ4,4 間及び両大径回転カッタの外側に積重して全
体で球形になるよう構成したものである。即ち例えば、
図3に示すように、厚さ0.5mm の大径回転カッタ
を2mm間隔で回転軸に固定し、大径回転カッタ間の中
心部から外側へ向けて両方向へ順次直径が 3.8mm
, 3.7mm, 3.6mm, 3.4mm, 3.
2mmの各厚さ0.2mm の小径回転カッタ板を積重
して挿入し、大径回転カッタ4,4 の両外側に直径が
 2mm, 1.5mm, 1mm, 0.6mm の
各厚さ0.1mm の小径回転カッタ板を積重して回転
軸に固定することによって直径3.8mm の球状カッ
タに等しいカッタを大径回転カッタ4,4 の中心に設
けることができる。
[Embodiment] The present invention will be explained below with reference to an embodiment of the drawings. FIG. 2 shows an embodiment of the dental bone processing tool according to the present invention, which corresponds to an artificial tooth root having two blades as shown in FIG. 1. An example is shown in FIG. 2, in which (a) is a side view and (b) is a front view. In the figure, 3 is a rotating shaft, 4 is a large-diameter rotary cutter for groove machining, and its plate thickness is 0.45 to 0.00, which corresponds to the thickness of the blade 1 of the artificial tooth root shown in Figure 1.
.. The radius is approximately 5 mm, which corresponds to the circular arc radius of the blade 1, and has a cutting edge for processing on the periphery. These two large-diameter rotary cutters 4 are fixed to the rotating shaft 3 with an interval corresponding to the blades of the artificial tooth root maintained. 5 is a small-diameter rotary cutter for machining a hole that fits into the lower end of the head 2 of an artificial tooth root, and this rotary cutter of unit thickness (for example, 0.2 mm) corresponds to the shape of the hole to be machined. In the figure, the outer shape of the lower end of the head of the artificial tooth root is a hemisphere, and in order to fit this, multiple pieces of different diameters are stacked together and fixed to the rotating shaft 3. The small-diameter rotary cutters are stacked between the large-diameter rotary cutters 4 and on the outside of both large-diameter rotary cutters, so that the entire cutter has a spherical shape. That is, for example,
As shown in Figure 3, large-diameter rotary cutters with a thickness of 0.5 mm are fixed to a rotating shaft at intervals of 2 mm, and diameters of 3.8 mm are sequentially moved in both directions outward from the center between the large-diameter rotary cutters.
, 3.7mm, 3.6mm, 3.4mm, 3.
2mm diameter rotary cutter plates each having a thickness of 0.2mm are stacked and inserted, and diameters of 2mm, 1.5mm, 1mm, and 0.6mm thickness 0 are placed on both outsides of the large diameter rotary cutters 4, 4. A cutter equivalent to a spherical cutter with a diameter of 3.8 mm can be provided at the center of the large diameter rotary cutters 4, 4 by stacking small diameter rotary cutter plates of .1 mm and fixing them to the rotating shaft.

【0010】図4は上記工具を用いた人工歯根の植込み
溝の加工状態を示す説明図で、顎骨の側断面図で示して
ある。回転半径がブレード1の円弧半径にほぼ等しく、
板厚がブレード1の厚さにほぼ等しい大径回転カッタ4
により、歯茎を切開した骨6に歯槽頂より切込み、ブレ
ード1が丁度埋め込まれる程度の深さDまで切り込む。 更にブレード1の2つの円弧の中心間隔長Bに対応する
距離だけ移動して同様に切り込む。このようにして骨の
加工を行なうことにより、ブレード1の先端1aの2つ
の円弧が交差する凹凸面形状の底をした2条の平行溝6
a(図5)を加工することができる。また、工具の回転
軸3には、溝加工用の大径回転カッタ4,4 の間及び
これらの外側に、小径回転カッタを積み重ねることによ
り球形に形成したカッタ5が設けてあるので、上記大径
回転カッタ4,4 による溝加工と同時に球形の小径回
転カッタ5によって平行溝6a,6a 間の間隔より大
きい径の球形底をした穴6b(図5)が加工形成される
。この穴6bはブレード1に支持される頭部2の下端2
aが嵌合する形状をした穴になる。
FIG. 4 is an explanatory diagram showing the processing state of an implantation groove of an artificial tooth root using the above-mentioned tool, and is a side sectional view of the jawbone. The radius of rotation is approximately equal to the arc radius of blade 1,
A large-diameter rotary cutter 4 whose plate thickness is approximately equal to the thickness of the blade 1
Then, the bone 6 is incised through the gums, and an incision is made from the alveolar crest to a depth D that is just enough to embed the blade 1. Further, the blade 1 is moved by a distance corresponding to the distance B between the centers of the two circular arcs and cuts in the same manner. By processing the bone in this way, two parallel grooves 6 with an uneven bottom where the two arcs of the tip 1a of the blade 1 intersect
a (Fig. 5) can be processed. Furthermore, the rotary shaft 3 of the tool is provided with a cutter 5 formed into a spherical shape by stacking small diameter rotary cutters between and outside of the large diameter rotary cutters 4, 4 for groove machining. Simultaneously with the groove machining by the radial rotary cutters 4, 4, a hole 6b (FIG. 5) having a spherical bottom and a diameter larger than the distance between the parallel grooves 6a, 6a is formed by the spherical small-diameter rotary cutter 5. This hole 6b is located at the lower end 2 of the head 2 supported by the blade 1.
This will be a hole with a shape that a fits into.

【0011】このようにして加工された溝6a,6a 
、穴6b,6b は相対的位置、形状精度が人工歯根の
ブレード1,1 及び頭部2,2 の形状寸法に対応し
て所定の寸法精度をもって容易に加工される。加工溝の
幅はブレード1が片側0.05mm程度の隙間をもって
植え込まれ、加工溝の深さはブレードの上端が骨内に埋
まる程度に植え込まれるようにするのがよい。人工歯根
の頭部2の下端2aは加工された穴6bに嵌合して固定
される。これによりブレード1の下端1aを奥深く埋め
過ぎて下顎管に損傷を与えるようなことがなく、極めて
安全に容易に埋込み手術をすることができる。またブレ
ード先端1aが2つの円弧によって凹凸に形成され、ほ
ぼ同一形状に加工された溝内に埋め込まれるから、位置
決めが容易にでき、且つそれが骨内に埋め込まれて固定
されるから、横方向の移動がなく、また幅方向には2枚
のブレード1が所要の間隔をもって平行に結合する構造
であるから、骨への座着がしっかりと強固になされ、保
持性の高い植込みができる。
Grooves 6a, 6a processed in this way
, the holes 6b, 6b are easily machined with a predetermined dimensional accuracy so that the relative position and shape accuracy correspond to the shape and dimensions of the blade 1,1 and the head 2,2 of the artificial tooth root. The width of the machined groove is such that the blade 1 is implanted with a gap of about 0.05 mm on one side, and the depth of the machined groove is preferably such that the blade 1 is implanted so that the upper end of the blade is buried in the bone. The lower end 2a of the head 2 of the artificial tooth root is fitted into the machined hole 6b and fixed. This prevents the lower end 1a of the blade 1 from being buried too deeply and causing damage to the mandibular canal, making it possible to carry out the implantation surgery extremely safely and easily. In addition, since the blade tip 1a is unevenly formed by two circular arcs and embedded in a groove machined into almost the same shape, it can be easily positioned, and since it is embedded and fixed in the bone, it can be easily positioned in the lateral direction. Since there is no movement of the blade, and the structure is such that the two blades 1 are joined in parallel with a required interval in the width direction, the blade is firmly seated on the bone and can be implanted with high retention.

【0012】こうして保持性を高めて植え込まれた人工
歯根の頭部2に歯冠を接着して支持する。その咬合時の
圧力は35〜70kgf 程度となって作用し、これを
頭部2を固定したブレード1が受け止めることになるが
、頭部2の下端2aが骨に加工した穴に嵌合し、全体的
に圧力を分散することができるので、その緩衝作用によ
って衝撃や振動を和らげ植込み当初から不快感を伴うこ
となく安定した保持性を得ることができる。
[0012] In this way, the tooth crown is bonded and supported to the head 2 of the implanted artificial tooth root with improved retention. The pressure at the time of occlusion is about 35 to 70 kgf, which is received by the blade 1 to which the head 2 is fixed. Since the pressure can be dispersed over the whole area, the shock and vibration can be alleviated by its cushioning effect, and stable retention can be achieved without causing any discomfort from the time of implantation.

【0013】なお、人工歯根としてはブレード1の先端
1aに1つの円弧を形成し、このブレード中心に1つの
頭部2を結合したものがあるが、この場合の植込み溝の
加工は図4に示すように、本発明に係る骨加工工具を用
い、骨に対し深さ方向にのみ1回だけ切り込めばよく、
それによって人工歯根のブレード1が嵌合する溝と、頭
部の下端2aが嵌合する穴を同時に精密に加工すること
ができる。
[0013] As an artificial tooth root, there is one in which one circular arc is formed at the tip 1a of the blade 1, and one head 2 is connected to the center of this blade, but the processing of the implantation groove in this case is shown in Fig. 4. As shown, using the bone processing tool according to the present invention, it is only necessary to cut into the bone once in the depth direction,
Thereby, the groove into which the blade 1 of the artificial tooth root fits and the hole into which the lower end 2a of the head fits can be precisely machined at the same time.

【0014】また、頭部2の形状は円柱状に限らず、円
錐柱、角柱、角錐柱、矩形柱状等の各種の形状のものが
任意に利用され、各種形状に対応して頭部下端2aの形
状も球形に限らず平面、湾曲面、突起面等に形成される
ので、この頭部下端が嵌合する穴を加工するために、溝
加工用大径回転カッタ間及びその両方の外側に取り付け
る小径回転カッタの形状を変える必要があるが、本発明
によるときは、この小径回転カッタを単位厚さの回転カ
ッタ板を直径の異なるものを加工穴の形状に応じて組み
合わせて積重させる手段を採用することによって任意の
形状のものを容易に組立利用することができる便利があ
る。勿論、大径回転カッタ間と両方の外側部分との3部
分に分割したカッタを取付けて利用することも可能であ
る。
Further, the shape of the head 2 is not limited to a cylindrical shape, and various shapes such as a conical column, a prismatic column, a pyramidal column, a rectangular column, etc. can be arbitrarily used, and the lower end 2a of the head can be adjusted to correspond to various shapes. The shape of the head is not limited to a spherical shape, but is also formed into a flat, curved, protruding surface, etc., so in order to machine the hole into which the lower end of the head fits, it is necessary to cut between the large-diameter rotary cutters for groove machining and on the outside of both of them. Although it is necessary to change the shape of the small-diameter rotary cutter to be attached, according to the present invention, the small-diameter rotary cutter is stacked by combining rotary cutter plates of unit thickness with different diameters according to the shape of the machined hole. By adopting this, it is convenient to be able to easily assemble and utilize objects of any shape. Of course, it is also possible to attach and utilize a cutter divided into three parts, one between the large-diameter rotary cutters and the other outside parts.

【0015】図6は、上記の如く構成された骨加工工具
をチャック固定して骨加工する本発明に係る加工装置の
一実施例を示しており、図中、7は握り部分、8は先端
スリーブ、9は図示しないモータに連結された回転シャ
フトで、歯車機構10を介して中空軸11を回転する。 中空軸11の先端の軸受に骨加工工具の回転軸3を嵌合
チャックして回転する。12は冷却液の供給管で、中空
軸11の基端に回転シール13を介して水密に接続し、
ホース14から供給される加圧冷却水 (食塩水等) 
を中空軸11内へ供給する。
FIG. 6 shows an embodiment of a processing device according to the present invention for processing bones by chucking and fixing the bone processing tool configured as described above. In the figure, 7 is a grip portion, and 8 is a tip The sleeve 9 is a rotating shaft connected to a motor (not shown) and rotates a hollow shaft 11 via a gear mechanism 10. The rotary shaft 3 of the bone machining tool is fitted onto the bearing at the tip of the hollow shaft 11 and rotated. 12 is a cooling liquid supply pipe, which is watertightly connected to the base end of the hollow shaft 11 via a rotary seal 13;
Pressurized cooling water (salt water, etc.) supplied from hose 14
is supplied into the hollow shaft 11.

【0016】骨加工工具の回転軸3には冷却液の流通路
が形成されており、且つ大径回転カッタ4に対して冷却
液をほぼ 120°の角度で噴射する約 0.3mmφ
程度の噴射口を形成してあり、図4に示すように骨の加
工部分に冷却液を噴射供給しながら加工ができるように
したものである。骨の加工、即ち溝6aや穴6bの切削
時に骨が熱によって損傷されないことが必要である。さ
もないと切断された骨の接植再生あるいは癒着が困難に
なるか全く不可能になるからである。そこで冷却水をホ
ース14から加圧して供給し、中空軸11から工具回転
軸3に供給しカッタ部分に開口から噴射供給することに
よって冷却切削し、回転速度通常1〜3m/s程度の高
速加工に際しても骨の温度を抑えることができる。約5
0℃の最高温度以下で安定して加工することができる。 従って、冷却液の供給注入によってカッタの回転を上げ
て短時間で切削手術ができることになる。
A coolant flow path is formed in the rotary shaft 3 of the bone machining tool, and has a diameter of approximately 0.3 mm for injecting the coolant at an angle of approximately 120° to the large-diameter rotary cutter 4.
As shown in FIG. 4, the bone can be processed while being sprayed with a cooling liquid. It is necessary that the bone is not damaged by heat when processing the bone, that is, cutting the grooves 6a and holes 6b. Otherwise, replantation or union of the amputated bone will be difficult or even impossible. Therefore, cooling water is supplied under pressure from the hose 14, supplied to the tool rotating shaft 3 from the hollow shaft 11, and injected into the cutter portion from the opening for cooling cutting, and high-speed machining at a rotation speed of usually about 1 to 3 m/s. It can also reduce bone temperature. Approximately 5
It can be stably processed at temperatures below the maximum temperature of 0°C. Therefore, the cutting operation can be performed in a short time by increasing the rotation of the cutter by supplying and injecting the coolant.

【0017】而して、図3には、植え込むべき人工歯根
の頭部下面が球形であるものを想定して、多数の小径回
転カッタ5,5の外周により球形が形成され、球形の穴
が加工されるような骨加工工具を示したが、顎骨にドリ
ルで穴を明けた後その形状が楕円に近い形状になる場合
もある。このような楕円になる骨のファイバーストラク
チュアーに対応するため、本発明に係る骨加工工具は、
図7に示すように多数の小径回転カッタ5,5を積み重
ねたときその外周形状が楕円形となるように構成するこ
とも可能である。また、これらの形状に限らず、各種異
なった直径の小径回転カッタを組み合わせることにより
、任意の形状加工に対応することが可能である。
Assuming that the lower surface of the head of the artificial tooth root to be implanted is spherical, FIG. Although a bone machining tool that is used for machining is shown, after drilling a hole in the jawbone, the shape of the hole may be close to an ellipse. In order to accommodate such an elliptical bone fiber structure, the bone processing tool according to the present invention has the following features:
As shown in FIG. 7, when a large number of small diameter rotary cutters 5, 5 are stacked, it is also possible to configure the outer circumferential shape to be elliptical. Moreover, it is not limited to these shapes, but by combining small diameter rotary cutters with various different diameters, it is possible to process any shape.

【0018】また、これまでの実施例においては、図1
に示すようなブレード1を2枚有する人工歯根に対応す
る加工工具及び装置について説明したが、本発明は、図
8に示すようにブレード1が1枚の人工歯根にも対応で
きるものであり、そのような人工歯根に対応する本発明
に係る加工工具の一実施例として、図9には、1枚のブ
レードを植え込むための1条の溝を加工する1枚の大径
回転カッタ4と、その両面に、人工歯根の頭部の下端が
嵌合する穴を加工する多数の小径回転カッタ5,5を積
み重ねて成る骨加工工具が示されている。
In addition, in the previous embodiments, FIG.
Although the processing tool and device compatible with an artificial tooth root having two blades 1 as shown in FIG. As an embodiment of the processing tool according to the present invention that is compatible with such an artificial tooth root, FIG. 9 shows one large-diameter rotary cutter 4 for processing one groove for implanting one blade, A bone machining tool is shown on both sides of the bone machining tool in which a large number of small-diameter rotary cutters 5, 5 are stacked for machining a hole into which the lower end of the head of an artificial tooth root fits.

【0019】このように、本発明に係る歯科用骨加工工
具及び装置は、必要に応じて大径回転カッタ4,4の枚
数を適宜変更することにより、任意の枚数のブレードを
有する人工歯根に対応でき、また、小径回転カッタ5,
5の直径及び枚数を適宜変更することにより、頭部下面
が任意の形状の人工歯根にも容易に対応できるものであ
る。
As described above, the dental bone processing tool and device according to the present invention can be used to form an artificial tooth root having an arbitrary number of blades by appropriately changing the number of large-diameter rotary cutters 4, 4 as necessary. Compatible with small diameter rotary cutter 5,
By appropriately changing the diameter and number of the teeth 5, it is possible to easily accommodate an artificial tooth root having an arbitrary shape of the lower surface of the head.

【0020】[0020]

【発明の効果】以上のように本発明の骨加工工具は、回
転軸に人工歯根のブレードを植え込むための溝を加工す
る所要枚数の大径回転カッタを上記ブレード間の間隔と
等しい間隔で取り付けると共に、上記所要枚数の大径回
転カッタの間及び各大径回転カッタの外側に、人工歯根
の頭部の下端が嵌合する穴を加工する小径回転カッタを
取り付けて成り、ブレードを植え込む溝加工と頭部下端
を嵌合する穴加工とを同時に行なうようにしたものであ
るから、骨加工が簡単、容易にでき、且つ上記溝及び穴
の位置が正確に出て加工精度が高く、そのため、人工歯
根をがたつくこと無く安定して強固に植込み保持するこ
とができる。
As described above, the bone machining tool of the present invention has a required number of large diameter rotary cutters for machining grooves for implanting artificial tooth root blades on the rotary shaft at intervals equal to the interval between the blades. In addition, between the required number of large-diameter rotary cutters and on the outside of each large-diameter rotary cutter, a small-diameter rotary cutter is attached for machining a hole into which the lower end of the head of the artificial tooth root fits, and a groove for implanting the blade is installed. Since the hole for fitting the lower end of the head is simultaneously machined, bone machining can be done easily and easily, and the grooves and holes are precisely positioned, resulting in high machining accuracy. The artificial tooth root can be stably and firmly implanted and held without wobbling.

【0021】又、上記人工歯根の頭部の下端が嵌合する
穴を加工する小径回転カッタは、単位厚さの回転カッタ
板を、加工する穴形状に対応する直径のものを複数枚組
み合わせて積重したことにより、頭部下端の形状に応じ
て任意の形状及び大きさに対応した小径回転カッタを容
易に形成することができ、これによって対応する穴の加
工を容易にすることができる効果がある。
[0021] Furthermore, the small diameter rotary cutter for machining the hole into which the lower end of the head of the artificial tooth root fits is made by combining a plurality of rotary cutter plates of unit thickness with diameters corresponding to the shape of the hole to be machined. By stacking, it is possible to easily form a small-diameter rotary cutter that corresponds to any shape and size depending on the shape of the lower end of the head, which has the effect of making it easier to process the corresponding hole. There is.

【0022】又、加工装置としては、上記加工工具をチ
ャック固定して高速回転を与え、且つカッタ工具の回転
軸に形成した冷却液の流通路から回転カッタの加工部分
に冷却液を噴射供給しながら加工できるようにしたもの
であるから、切削時に骨が熱によって損傷されることな
く冷却切削でき、回転速度を高くして高速加工しても骨
の温度を抑えることができる。即ち、約50℃の最高温
度以下で安定に加工することができ、したがって、冷却
液の供給注入によってカッタの回転を上げて短時間の切
削手術ができる効果が得られる。
[0022] The machining device also fixes the machining tool on a chuck and rotates it at high speed, and injects coolant to the machining part of the rotary cutter from a coolant flow path formed on the rotating shaft of the cutter tool. Since the bone can be machined while still being processed, the bone can be cooled and cut without being damaged by heat during cutting, and the temperature of the bone can be suppressed even if the rotational speed is increased and high-speed processing is performed. That is, stable processing can be performed at a maximum temperature of about 50° C. or lower, and therefore, the rotation of the cutter can be increased by supplying the cooling liquid, thereby making it possible to perform cutting operations in a short period of time.

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

【図1】人工歯根の一実施例を示す正面、側面及び底面
図である。
FIG. 1 is a front, side, and bottom view showing one embodiment of an artificial tooth root.

【図2】本発明に係る骨加工工具の一実施例の側面及び
正面図である。
FIG. 2 is a side view and a front view of an embodiment of a bone machining tool according to the present invention.

【図3】本発明に係る骨加工工具の一実施例の拡大説明
図である。
FIG. 3 is an enlarged explanatory view of one embodiment of the bone machining tool according to the present invention.

【図4】本発明に係る骨加工工具による加工状態を示す
説明図である。
FIG. 4 is an explanatory diagram showing a machining state by the bone machining tool according to the present invention.

【図5】本発明に係る骨加工工具により加工された溝及
び穴を示す説明図である。
FIG. 5 is an explanatory diagram showing grooves and holes machined by the bone processing tool according to the present invention.

【図6】本発明に係る骨加工装置の一実施例を示す説明
図である。
FIG. 6 is an explanatory diagram showing an embodiment of the bone processing device according to the present invention.

【図7】本発明に係る骨加工工具のもう一つの実施例の
拡大説明図である。
FIG. 7 is an enlarged explanatory view of another embodiment of the bone processing tool according to the present invention.

【図8】ブレードが1枚の人工歯根を示す正面、側面及
び底面図である。
FIG. 8 is a front, side, and bottom view showing an artificial tooth root with one blade.

【図9】本発明に係る骨加工工具の更にもう一つの実施
例の拡大説明図である。
FIG. 9 is an enlarged explanatory view of yet another embodiment of the bone machining tool according to the present invention.

【符号の説明】[Explanation of symbols]

1     ブレード 2     頭部 3     回転軸 4     大径回転カッタ 5     小径回転カッタ 6     骨 6a    加工溝 6b    加工穴 7     握り部分 8     スリーブ 9     回転シャフト 10    歯車 11    中空軸 12    冷却液供給管 13    回転シール 14    ホース 1 Blade 2 Head 3 Rotation axis 4 Large diameter rotary cutter 5 Small diameter rotary cutter 6 Bone 6a Machining groove 6b Machining hole 7 Grip part 8 Sleeve 9 Rotating shaft 10 Gear 11 Hollow shaft 12 Coolant supply pipe 13 Rotating seal 14 Hose

Claims (8)

【特許請求の範囲】[Claims] 【請求項1】互いに対向した状態で平行に配置された複
数枚のブレードとこれによって支持される頭部より成る
人工歯根の顎骨への植込み用穴を加工する工具であって
、回転軸(3) に上記複数枚のブレードを植え込むた
めの複数条の溝を加工する複数枚の大径回転カッタ(4
,4) を上記複数枚のブレード間の間隔と等しい間隔
で取り付けると共に、上記複数枚の大径回転カッタ(4
,4) の間及び最も外側の大径回転カッタの外側に、
人工歯根の頭部の下端が嵌合する穴を加工する小径回転
カッタ(5,5) を取り付けて成ることを特徴とする
歯科用骨加工工具。
1. A tool for machining a hole for implanting an artificial tooth root into the jawbone, which comprises a plurality of parallel blades arranged facing each other and a head supported by the blades, the tool comprises a rotating shaft (3 ) A plurality of large-diameter rotary cutters (4
, 4) are attached at intervals equal to the spacing between the plurality of blades, and the plurality of large diameter rotary cutters (4) are attached at intervals equal to the spacing between the plurality of blades.
, 4) and on the outside of the outermost large-diameter rotary cutter,
A dental bone machining tool characterized in that it is equipped with a small-diameter rotary cutter (5, 5) for machining a hole into which the lower end of the head of an artificial tooth root fits.
【請求項2】2枚のブレードを有する人工歯根の顎骨へ
の植込み用穴を加工するため、上記大径回転カッタ(4
,4) が2枚設けられた請求項1に記載の歯科用骨加
工工具。
[Claim 2] The large diameter rotary cutter (4
, 4) The dental bone machining tool according to claim 1, wherein two of these are provided.
【請求項3】上記人工歯根の頭部の下端が嵌合する穴を
加工する小径回転カッタ(5,5) が、加工する穴の
形状に対応する直径の単位厚さの回転カッタを複数種類
組み合わせて積み重ね固定して成る請求項1に記載の歯
科用骨加工工具。
3. The small-diameter rotary cutter (5, 5) for machining the hole into which the lower end of the head of the artificial tooth root fits is made of a plurality of types of rotary cutters each having a diameter and a unit thickness corresponding to the shape of the hole to be machined. The dental bone processing tool according to claim 1, which is formed by combining, stacking and fixing.
【請求項4】上記回転軸(3) に冷却水を通過せしめ
得る流路を形成した請求項1に記載の歯科用骨加工工具
4. The dental bone processing tool according to claim 1, wherein a flow path through which cooling water can pass is formed in the rotating shaft (3).
【請求項5】1枚のブレードとこれによって支持される
頭部より成る人工歯根の顎骨への植込み用穴を加工する
工具であって、回転軸(3) に上記ブレードを植え込
むための1条の溝を加工する1枚の大径回転カッタ(4
) を取り付けると共に、その両面に、人工歯根の頭部
の下端が嵌合する穴を加工する小径回転カッタ(5,5
) を取り付けて成ることを特徴とする歯科用骨加工工
具。
5. A tool for machining a hole for implanting an artificial tooth root into the jawbone, comprising one blade and a head supported by the blade, the tool comprising one blade for implanting the blade into the rotating shaft (3). One large diameter rotary cutter (4
), and a small-diameter rotary cutter (5, 5
) A dental bone processing tool, characterized in that it is equipped with:
【請求項6】上記人工歯根の頭部の下端が嵌合する穴を
加工する小径回転カッタ(5,5) が、加工する穴の
形状に対応する直径の単位厚さの回転カッタを複数種類
組み合わせて積み重ね固定して成る請求項5に記載の歯
科用骨加工工具。
6. The small-diameter rotary cutter (5, 5) for machining the hole into which the lower end of the head of the artificial tooth root is fitted includes a plurality of types of rotary cutters each having a diameter and a unit thickness corresponding to the shape of the hole to be machined. The dental bone processing tool according to claim 5, which is formed by stacking and fixing the dental bone processing tool in combination.
【請求項7】上記回転軸(3) に冷却水を通過せしめ
得る流路を形成した請求項5に記載の歯科用骨加工工具
7. The dental bone processing tool according to claim 5, wherein a flow path through which cooling water can pass is formed in the rotating shaft (3).
【請求項8】1枚のブレード若しくは互いに対向した状
態で平行に配置された複数枚のブレードとこれによって
支持される頭部より成る人工歯根の顎骨への植込み用穴
を加工する装置であって、回転軸(3) に上記1枚若
しくは複数枚のブレードを植え込むための溝を加工する
1枚若しくは複数枚の大径回転カッタ(4,4) を上
記ブレード間の間隔と等しい間隔で取り付けると共に、
各大径回転カッタ(4,4) の間及び最も外側の大径
回転カッタの外側に、人工歯根の頭部の下端が嵌合する
穴を加工する小径回転カッタ(5,5) を取り付け、
上記回転軸(3) には冷却水を通過せしめ得る流路を
形成して成る骨加工工具と、上記骨加工工具をチャック
して高速回転せしめる回転装置と、上記骨加工工具の回
転軸内の流路に冷却水を圧入し回転カッタ部分に噴出す
る冷却液供給装置と、を設けたことを特徴とする歯科用
骨加工装置。
8. A device for machining a hole for implanting an artificial tooth root into the jawbone, which comprises one blade or a plurality of blades arranged in parallel facing each other, and a head supported by the blade. , one or more large-diameter rotary cutters (4, 4) are installed on the rotating shaft (3) at intervals equal to the intervals between the blades, and one or more large-diameter rotary cutters (4, 4) are machined to form grooves for inserting the one or more blades. ,
A small-diameter rotary cutter (5, 5) is attached between each large-diameter rotary cutter (4, 4) and on the outside of the outermost large-diameter rotary cutter to form a hole into which the lower end of the head of the artificial tooth root fits;
The rotating shaft (3) has a bone processing tool formed with a flow path through which cooling water can pass, a rotating device that chucks the bone processing tool and rotates it at high speed, and a rotating shaft inside the bone processing tool. A dental bone processing device comprising: a cooling liquid supply device that presses cooling water into a flow path and squirts it to a rotating cutter portion.
JP3136566A 1991-06-07 1991-06-07 Dental bone processing tool and device Pending JPH04361746A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP3136566A JPH04361746A (en) 1991-06-07 1991-06-07 Dental bone processing tool and device
EP19920305155 EP0517529A3 (en) 1991-06-07 1992-06-05 Jawbone cutting tool and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3136566A JPH04361746A (en) 1991-06-07 1991-06-07 Dental bone processing tool and device

Publications (1)

Publication Number Publication Date
JPH04361746A true JPH04361746A (en) 1992-12-15

Family

ID=15178249

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3136566A Pending JPH04361746A (en) 1991-06-07 1991-06-07 Dental bone processing tool and device

Country Status (1)

Country Link
JP (1) JPH04361746A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9066804B2 (en) 1994-09-02 2015-06-30 Puget Bioventures Llc Method and apparatus for femoral and tibial resection
US9192391B2 (en) 2001-03-05 2015-11-24 Puget Bioventures Llc Method for minimally invasive total knee arthroplasty
US9814539B2 (en) 2004-01-14 2017-11-14 Puget Bioventures Llc Methods and apparatus for conformable prosthetic implants

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9066804B2 (en) 1994-09-02 2015-06-30 Puget Bioventures Llc Method and apparatus for femoral and tibial resection
US9192391B2 (en) 2001-03-05 2015-11-24 Puget Bioventures Llc Method for minimally invasive total knee arthroplasty
US9421022B2 (en) 2001-03-05 2016-08-23 Puget Bioventures Llc Method and apparatus for total knee arthroplasty
US9814539B2 (en) 2004-01-14 2017-11-14 Puget Bioventures Llc Methods and apparatus for conformable prosthetic implants

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