JP7750715B2 - Bone Chisel - Google Patents
Bone ChiselInfo
- Publication number
- JP7750715B2 JP7750715B2 JP2021183766A JP2021183766A JP7750715B2 JP 7750715 B2 JP7750715 B2 JP 7750715B2 JP 2021183766 A JP2021183766 A JP 2021183766A JP 2021183766 A JP2021183766 A JP 2021183766A JP 7750715 B2 JP7750715 B2 JP 7750715B2
- Authority
- JP
- Japan
- Prior art keywords
- blade
- bone
- chisel
- present
- bone chisel
- 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.)
- Active
Links
Landscapes
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Dental Prosthetics (AREA)
Description
本発明は、歯科におけるインプラント用のボーンチゼルに関する。 The present invention relates to a bone chisel for dental implants.
従来、例えば、図１１に示すように、インプラントを埋入するために、超音波カッター（超音波メス）で皮質骨に予め設けた幅０．３ｍｍのスリット（骨の隙間）に、先端がマイナス形状（直線のクサビ形状、刃の板厚が０．５ｍｍ、刃の開き角が１１度）のボーンチゼルを挿入して、スリットを例えば幅１．０ｍｍまで広げていた。 Conventionally, as shown in Figure 11, to insert an implant, a bone chisel with a flat-head tip (straight wedge-shaped, blade thickness 0.5 mm, blade opening angle 11 degrees) is inserted into a 0.3 mm-wide slit (gap in the bone) previously made in the cortical bone with an ultrasonic cutter (ultrasonic scalpel), widening the slit to a width of, for example, 1.0 mm.
関連技術として、一端側が高速回転器に着脱自在に連結される柄部と、柄部の他端に設けられた切削部とから成り、切削部は回転軸線に沿って先細で正多角形の横断面を有し、高速回転する切削部の角部で、骨の表面を削り取り、切削部の横断面は、３～６角の正多角形とし、切削部の縦断面形状は紡錘形あるいは部分円形とすることで、効率良く骨を削り取ることができ、仕上げ面性状が良好であり、操作が簡便でコントロールしやすい歯科用切削具を提供する技術がある（特許文献１参照）。 Related technology includes a dental cutting tool that consists of a handle, one end of which is detachably connected to a high-speed rotor, and a cutting section attached to the other end of the handle. The cutting section tapers along the axis of rotation and has a regular polygonal cross section. The corners of the cutting section, which rotates at high speed, scrape away the surface of the bone. The cross section of the cutting section is a regular polygon with three to six sides, and the longitudinal cross section of the cutting section is spindle-shaped or partially circular, allowing for efficient scraping of bone, producing good finished surface quality, and being easy to operate and control (see Patent Document 1).
しかし、幅０．３ｍｍのスリットに刃の板厚が０．５ｍｍのボーンチゼルを挿入することは困難である。そこで、刃の厚みが薄くて骨に対してスムーズに垂直にささり、かつ、最初の挿入する時点で加わる力が大きく骨が割れてしまうことがなく、さらに挿入してスリットを広げる際の力も骨が割れるようにかからないボーンチゼルが求められていた。
ここで、斧の刃の形状として、ホロー形状で湾曲面を備えるものが知られているが、斧は軽い力で木材を割ることが目的であり、ボーンチゼルは作業者が強い力で押しても骨が割れないことが求められるため、いわば反対のことを目的としているのであり、斧の刃の形状は組合せの際には阻害要因を有する技術であると言える。
本発明は、歯科分野の実用に耐えられるレベルの研究開発と実証データ分析を実施してなされた、製品レベルのものであり、単なるアイデア段階にとどまるものではない。
However, it is difficult to insert a bone chisel with a blade thickness of 0.5 mm into a slit that is 0.3 mm wide. Therefore, there was a need for a bone chisel with a thin blade that could smoothly and perpendicularly insert into the bone, that would not apply a large amount of force that would crack the bone when first inserted, and that would not apply a force that would crack the bone when inserting and widening the slit.
Here, axe blades with hollow shapes and curved surfaces are known, but the purpose of axes is to split wood with light force, while bone chisels are required to not split bones even when the worker applies strong force, so in other words, they are intended to do the opposite, and it can be said that the shape of the axe blade is a technology that has an obstacle when it comes to combining them.
The present invention is a product-level invention that has been achieved through research and development and empirical data analysis at a level that is practical for use in the dental field, and is not merely an idea.
本発明の目的は、刃の厚みが薄くて骨に対してスムーズに垂直にささり、かつ、最初の挿入する時点で加わる力が大きく骨が割れてしまうことがなく、さらに挿入してスリットを広げる際の力も骨が割れるようにかからないボーンチゼルを提供することにある。 The object of the present invention is to provide a bone chisel that has a thin blade that can be inserted smoothly and perpendicularly into the bone, does not apply a large amount of force that would crack the bone when first inserted, and does not apply a large amount of force that would crack the bone when inserting and widening the slit.
本発明のボーンチゼルは、歯科インプラント用のボーンチゼルであって、
刃幅方向をＸ方向とし、前記刃幅方向に直交する刃厚方向をＹ方向とし、前記刃幅方向と前記刃厚方向に直交する挿入深さ方向をＺ方向とするとき、
先端部がくさび形状であり、かつ、前記刃幅方向を含むＸ－Ｚ面側の側面が深さ方向に沿って凹型に湾曲し、かつ、前記刃幅方向に沿って前記凹型に湾曲している刃を有する。
The bone chisel of the present invention is a bone chisel for dental implants,
When the blade width direction is defined as the X direction, the blade thickness direction perpendicular to the blade width direction is defined as the Y direction, and the insertion depth direction perpendicular to the blade width direction and the blade thickness direction is defined as the Z direction,
The tip is wedge-shaped, and the side surface on the XZ plane side including the blade width direction is concavely curved along the depth direction, and the blade is concavely curved along the blade width direction .
本発明のボーンチゼルは、前記Ｘ－Ｚ面の両端面に前記刃幅方向に沿って前記凹型に湾曲した刃を備えたものであってもよい。 The bone chisel of the present invention may be provided with a blade curved in the concave shape along the blade width direction on both end surfaces of the XZ plane .
また、本発明のボーンチゼルは、刃を交換可能、また刃を柄の両側に装着可能、また柄が中空構造であってもよい。 Furthermore, the bone chisel of the present invention may have replaceable blades , blades that can be attached to both sides of the handle, and the handle may have a hollow structure.
本発明によれば、刃の厚みが薄くて骨に対してスムーズに垂直にささり、かつ、最初の挿入する時点で加わる力が大きく骨が割れてしまうことがなく、さらに挿入してスリットを広げる際の力も骨が割れるようにかからないボーンチゼルを提供することができる。 This invention provides a bone chisel with a thin blade that smoothly and perpendicularly penetrates the bone, does not apply a large amount of force that would crack the bone when first inserted, and does not apply a large amount of force that would crack the bone when inserting and widening the slit.
以下、本発明の実施の形態を図面を参照しつつ説明する。
図１に、本発明の第一乃至第三の実施の形態に係るボーンチゼルの刃の外観構成をまとめて示す。
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows the external configuration of the blade of the bone chisel according to the first to third embodiments of the present invention.
本発明の第一の実施の形態に係るボーンチゼルの刃１０は、Ｘ方向の刃幅方向を含む側面（Ｘ－Ｚ面）１０１が刃幅方向（Ｘ方向）に沿って湾曲（凹面）している。また、刃１０は、先端部１０２がくさび形状である。また、刃１０は、Ｙ方向の刃厚方向を含む側面（Ｙ－Ｚ面）１０３がＺ方向の深さ方向に沿って湾曲（凹面）している。また、刃１０は、Ｘ方向の刃幅方向の側面１０１がＺ方向の深さ方向に沿って湾曲（凹面）している。 In the bone chisel blade 10 according to the first embodiment of the present invention, a side surface (X-Z surface) 101 including the blade width direction in the X direction is curved (concave) along the blade width direction (X direction) . The tip 102 of the blade 10 is wedge- shaped. The side surface (Y-Z surface) 103 of the blade 10 including the blade thickness direction in the Y direction is curved (concave) along the depth direction in the Z direction. The side surface 101 of the blade 10 in the blade width direction in the X direction is curved (concave) along the depth direction in the Z direction.
本発明の第二の実施の形態に係るボーンチゼルの刃２０は、Ｘ方向の刃幅方向を含む側面１０５（Ｘ－Ｚ面）が刃幅方向（Ｘ方向）に沿って湾曲（凸面）している。また、刃２０は、先端部がくさび形状である。また、刃２０は、Ｘ－Ｚ面上のエッジ１０５がＺ方向の深さ方向に沿って湾曲（凹面）している。また、刃２０は、Ｘ方向の刃幅方向を含む側面１０４（Ｘ－Ｚ面）がＺ方向の深さ方向に沿って湾曲（鞍形面）している。 The blade 20 of the bone chisel according to the second embodiment of the present invention has a side surface 105 (X-Z surface) including the blade width direction in the X direction, which is curved (convex surface) along the blade width direction (X direction) . The blade 20 also has a wedge -shaped tip. The edge 105 on the X-Z surface of the blade 20 is also curved (concave surface) along the depth direction in the Z direction. The side surface 104 (X-Z surface) of the blade 20 including the blade width direction in the X direction is also curved ( saddle-shaped surface ) along the depth direction in the Z direction.
本発明の第三の実施の形態に係るボーンチゼルの刃３０は、第一の実施形態のボーンチゼルの刃１０に左右の刃１０６（Ｘ方向の刃幅方向に沿って湾曲（凹面）している。）を追加したイメージの構成である。 The bone chisel blade 30 according to the third embodiment of the present invention has a configuration similar to that of the bone chisel blade 10 of the first embodiment, in which left and right blades 106 (curved (concave) along the blade width direction in the X direction) are added.
図２は、本発明の第一の実施の形態に係るボーンチゼル１（刃１０を装着。）、第二の実施の形態に係るボーンチゼル２（刃２０を装着。）、第三の実施の形態に係るボーンチゼル３（刃３０を装着。）の外観構成を示す図である。 Figure 2 shows the external configuration of a bone chisel 1 (equipped with blade 10) according to a first embodiment of the present invention, a bone chisel 2 (equipped with blade 20) according to a second embodiment, and a bone chisel 3 (equipped with blade 30) according to a third embodiment.
図３を参照して、本発明の第一の実施の形態に係るボーンチゼル１の刃１０の構成を詳細に説明する。
刃１０は、刃の板厚がｄ４地点において０．４ｍｍ以下、刃の開き角が６度等であり、骨に形成されたスリットの幅を例えば、０．３ｍｍから１ｍｍに拡張するために用いられる。
刃１０は、骨に対して、例えば、深さ約８ｍｍまで挿入される。
図３（ｃ）の各地点における刃１０の断面図を図３（ｄ）に示す。刃１０の断面形状から、刃１０の角部の４点（３点以上）で骨に接して押すこととなり、応力を分散して、骨が割れにくくすることができる。ゆるい曲率（Ｒ
１、
Ｒ
２、
Ｒ
３
）であるが、平板と比較して、挿入してスリットを広げる際の力が骨が割れてしまうようにはかからないという効果は相当に大きい。
With reference to FIG. 3, the configuration of the blade 10 of the bone chisel 1 according to the first embodiment of the present invention will be described in detail.
The blade 10 has a blade thickness of 0.4 mm or less at point d4 , an opening angle of 6 degrees, etc., and is used to expand the width of a slit formed in bone to, for example, 0.3 mm to 1 mm.
The blade 10 is inserted into the bone to a depth of, for example, about 8 mm.
Figure 3(d) shows cross sections of the blade 10 at each point in Figure 3(c). The cross-sectional shape of the blade 10 allows the blade 10 to contact and press against the bone at four points (three or more points ) at the corners of the blade 10, dispersing stress and making the bone less likely to crack. Although the curvature is gentle (R1 , R2 , R3 ) , compared to a flat plate, the effect of not applying enough force to crack the bone when inserting and widening the slit is significant.
図４を参照して、本発明の第二の実施の形態に係るボーンチゼル２の刃２０の構成を詳細に説明する。
刃２０は、刃の板厚がｄ４地点において０．４ｍｍ以下、刃の開き角が６度等であり、骨に形成されたスリットの幅を例えば、０．３ｍｍから１ｍｍに拡張するために用いられる。
刃２０は、骨に対して、例えば、深さ約８ｍｍまで挿入される。
図４（ｃ）の各地点における刃２０の断面図を図４（ｄ）に示す。刃２０の断面形状から、刃２０の上下の２点で骨に接して押すこととなる。
With reference to FIG. 4, the configuration of the blade 20 of the bone chisel 2 according to the second embodiment of the present invention will be described in detail.
The blade 20 has a blade thickness of 0.4 mm or less at point d4 , an opening angle of 6 degrees, etc., and is used to expand the width of a slit formed in bone to, for example, 0.3 mm to 1 mm.
The blade 20 is inserted into the bone, for example, to a depth of about 8 mm.
The cross-sectional view of the blade 20 at each point in Fig. 4(c) is shown in Fig. 4(d). Due to the cross-sectional shape of the blade 20, the blade 20 comes into contact with and presses against the bone at two points, above and below.
図５を参照して、本発明の第三の実施の形態に係るボーンチゼル３の刃３０の構成を詳細に説明する。
刃３０は、刃の板厚がｄ４地点において０．５ｍｍ以下、刃の開き角が６度等であり、骨に形成されたスリットの幅を例えば、１ｍｍから２ｍｍに拡張するために用いられる。
刃３０は、骨に対して、例えば、深さ約８ｍｍまで挿入され、さらに最大角度３０度まで角度をつけて左右にふって骨を切ることができる。
図５（ｃ）の各地点における刃３０の断面図を図５（ｄ）に示す。刃３０の断面形状から、刃３０の角部の４点（３点以上）で骨に接して押すこととなり、応力を分散して、骨が割れにくくすることができる。ゆるい曲率（Ｒ
２、
Ｒ
３
）であるが、平板と比較して、挿入してスリットを広げる際の力が骨が割れてしまうようにはかからないという効果は相当に大きい。
With reference to FIG. 5, the configuration of the blade 30 of the bone chisel 3 according to the third embodiment of the present invention will be described in detail.
The blade 30 has a blade thickness of 0.5 mm or less at point d4 , an opening angle of 6 degrees, etc., and is used to widen the width of the slit formed in the bone to, for example, 1 mm to 2 mm.
The blade 30 can be inserted into the bone to a depth of, for example, about 8 mm, and can be angled up to a maximum angle of 30 degrees to cut the bone by swinging it back and forth.
Figure 5(d) shows cross sections of the blade 30 at each point in Figure 5(c). The cross-sectional shape of the blade 30 means that the blade 30 contacts and presses against the bone at four points (three or more points) at its corners, dispersing stress and making the bone less likely to crack. Although the curvatures are gentle (R2 , R3 ) , compared to a flat plate, the effect of not applying enough force to crack the bone when inserting and widening the slit is significant.
図６は、本発明の第一乃至第三の実施の形態に係るボーンチゼルの柄の構造を説明する図である。
ステンレス等の金属で一体型とすると約７０ｇの重量があり、軽量化のために、中空構造とすることであってよい。
刃は、柄に対して、抜けたり、回転しないように、止めねじで固定されることであってよい。
柄の開口部には、めねじが加工され、おねじが加工されたエンドキャップで蓋がされることであってよい。
FIG. 6 is a diagram illustrating the structure of the handle of the bone chisel according to the first to third embodiments of the present invention.
If it is made of a metal such as stainless steel and is made into an integrated unit, it will weigh about 70 g, so it may be made hollow to reduce the weight.
The blade may be secured to the handle with a set screw to prevent it from slipping out or rotating.
The opening in the handle may be internally threaded and capped with an externally threaded end cap.
図７は、本発明の第一乃至第三の実施の形態に係るボーンチゼルの柄の構造の変形例を示す図である。
柄は共通とし、刃先の種類（刃１０、刃２０、刃３０、刃４０など）のみ変更できるように刃を取り外して交換可能な構造とし、柄の両端に刃（異なる種類の刃であってもよい）を装着可能な構造とすることであってもよい。
FIG. 7 is a diagram showing a modified example of the handle structure of the bone chisel according to the first to third embodiments of the present invention.
The handle may be common, but the blade may be removable and replaceable so that only the type of cutting edge (blade 10, blade 20, blade 30, blade 40, etc.) can be changed, and blades (which may be different types of blades) may be attached to both ends of the handle.
図８は、本発明の第一の実施の形態に係るボーンチゼル１、本発明の第二の実施の形態に係るボーンチゼル２の挿入深さ位置と荷重との関係を示すグラフである。
横軸は深さ位置、縦軸は荷重を示す。
従来のボーンチゼルでは、最初の挿入する時点で加わる力が大きく、骨が割れてしまうリスクが高かった。本発明の第一の実施の形態に係るボーンチゼル１、本発明の第二の実施の形態に係るボーンチゼル２によれば、刃１０、刃２０の厚みが薄くて骨に対してスムーズに垂直にささり、かつ、最初の挿入する時点で加わる力が大きく骨が割れてしまうことがなく、さらに挿入してスリットを広げる際の力も骨が割れるようにかからないことがわかる。
FIG. 8 is a graph showing the relationship between the insertion depth position and the load for the bone chisel 1 according to the first embodiment of the present invention and the bone chisel 2 according to the second embodiment of the present invention.
The horizontal axis indicates the depth position, and the vertical axis indicates the load.
With conventional bone chisels, a large force is applied at the time of initial insertion, increasing the risk of the bone cracking. With the bone chisel 1 according to the first embodiment of the present invention and the bone chisel 2 according to the second embodiment of the present invention, the blades 10 and 20 are thin and can be inserted smoothly and perpendicularly into the bone, and the force applied at the time of initial insertion is not large enough to crack the bone, and furthermore, the force applied when inserting and widening the slit is not large enough to crack the bone.
図９は、本発明の第三の実施の形態に係るボーンチゼル３の挿入深さ位置と荷重との関係を示すグラフである。
横軸は時間（秒）、縦軸は荷重を示す。約７０秒で８ｍｍの深さ位置となり、その後、左右に１４度回転させた場合を一例として示す。
従来のボーンチゼルでは、最初の挿入する時点で加わる力が大きく、骨が割れてしまうリスクが高かった。本発明の第三の実施の形態に係るボーンチゼル３によれば、刃３０の厚みが薄くて骨に対してスムーズに垂直にささり、かつ、最初の挿入する時点で加わる力が大きく骨が割れてしまうことがなく、さらに挿入してスリットを広げる際の力も骨が割れるようにかからなく、また左右に骨を切る際の力も骨が割れるようにかからないことがわかる。
FIG. 9 is a graph showing the relationship between the insertion depth position and the load of the bone chisel 3 according to the third embodiment of the present invention.
The horizontal axis represents time (seconds) and the vertical axis represents the load. This shows an example in which the depth reached 8 mm in about 70 seconds and then the needle was rotated 14 degrees left and right.
With conventional bone chisels, a large force is applied when first inserted, increasing the risk of the bone cracking. With the bone chisel 3 according to the third embodiment of the present invention, the blade 30 is thin and can be inserted smoothly and perpendicularly into the bone, and the force applied when first inserted is large enough to prevent the bone from cracking. Furthermore, the force applied when inserting and widening the slit is not large enough to crack the bone, and the force applied when cutting the bone left and right is not large enough to crack the bone.
図１０に、本発明の第四の実施の形態としてのボーンチゼルの刃４０の外観構成を示す。
刃４０は、上記の刃１０の上半分と刃２０の下半分を組み合わせた形状である。
FIG. 10 shows the external configuration of a bone chisel blade 40 according to a fourth embodiment of the present invention.
The blade 40 has a shape that combines the upper half of the blade 10 and the lower half of the blade 20 described above.
上記の各実施の形態によれば、刃の厚みが薄くて骨に対してスムーズに垂直にささり、かつ、最初の挿入する時点で加わる力が大きく骨が割れてしまうことがなく、さらに挿入してスリットを広げる際の力も骨が割れるようにかからないボーンチゼルが実現されることとなる。 The above-described embodiments result in a bone chisel with a thin blade that can be inserted smoothly and perpendicularly into the bone, without applying too much force when first inserted, which could cause the bone to crack, and without applying enough force when inserting and widening the slit, which could cause the bone to crack.
なお、上述する各実施の形態は、本発明の好適な実施の形態であり、本発明の要旨を逸脱しない範囲内において形状・大きさ・比率等の種々の変更実施が可能である。例えば、異なる種類の刃の形状の一部を組み合わせた形状である。 The above-described embodiments are preferred embodiments of the present invention, and various modifications of shape, size, proportions, etc. are possible without departing from the spirit of the present invention. For example, a shape that combines parts of different blade shapes may be used.
１、２、３ ボーンチゼル
１０、２０、３０、４０ 刃
1, 2, 3 Bone Chisel 10, 20, 30, 40 Blades
Claims (3)
刃幅方向をＸ方向とし、前記刃幅方向に直交する刃厚方向をＹ方向とし、前記刃幅方向と前記刃厚方向に直交する挿入深さ方向をＺ方向とするとき、
先端部がくさび形状であり、かつ、前記刃幅方向を含むＸ－Ｚ面側の側面が深さ方向に沿って凹型に湾曲し、かつ、前記刃幅方向に沿って前記凹型に湾曲している刃を有するボーンチゼル。 A bone chisel for dental implants, comprising:
When the blade width direction is defined as the X direction, the blade thickness direction perpendicular to the blade width direction is defined as the Y direction, and the insertion depth direction perpendicular to the blade width direction and the blade thickness direction is defined as the Z direction,
A bone chisel having a tip portion that is wedge-shaped, a side surface on the XZ plane side including the blade width direction that is concavely curved along the depth direction, and a blade that is concavely curved along the blade width direction .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021183766A JP7750715B2 (en) | 2021-11-10 | 2021-11-10 | Bone Chisel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021183766A JP7750715B2 (en) | 2021-11-10 | 2021-11-10 | Bone Chisel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2023071127A JP2023071127A (en) | 2023-05-22 |
| JP7750715B2 true JP7750715B2 (en) | 2025-10-07 |
Family
ID=86395430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2021183766A Active JP7750715B2 (en) | 2021-11-10 | 2021-11-10 | Bone Chisel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP7750715B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202005005899U1 (en) | 2005-04-06 | 2005-07-07 | Aesculap Ag & Co. Kg | Bone splitting instrument for dental surgeon, comprising semi-cylindrical elevations on blade |
| US20150182233A1 (en) | 2013-12-26 | 2015-07-02 | Tenjin LLC | Percussive surgical devices, systems, and methods of use thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3803667A (en) * | 1972-02-07 | 1974-04-16 | A Rose | Universal handle for surgical implements |
| US6110175A (en) * | 1999-01-20 | 2000-08-29 | Synthes (Usa) | Surgical chisel and method of using same |
-
2021
- 2021-11-10 JP JP2021183766A patent/JP7750715B2/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202005005899U1 (en) | 2005-04-06 | 2005-07-07 | Aesculap Ag & Co. Kg | Bone splitting instrument for dental surgeon, comprising semi-cylindrical elevations on blade |
| US20150182233A1 (en) | 2013-12-26 | 2015-07-02 | Tenjin LLC | Percussive surgical devices, systems, and methods of use thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2023071127A (en) | 2023-05-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11523880B2 (en) | Instrument for drilling dental root canals | |
| US6419488B1 (en) | Endodontic instrument having a chisel tip | |
| AU2005311113B2 (en) | Improved osteotome | |
| CN103249372B (en) | For the instrument of holing to root canal | |
| US10582933B2 (en) | Oscillating surgical cutting tool | |
| WO2019095831A1 (en) | Tool bit for ultrasonic osteotome | |
| TWI361743B (en) | Screw-retaining screwdriver | |
| CA2244217A1 (en) | Screw for insertion into a bone and tool for removing this screw | |
| CN106691544A (en) | Ultrasonic knife head | |
| JP7750715B2 (en) | Bone Chisel | |
| AU2015301634C1 (en) | Surgical bur with a single cutting flute | |
| CN101304852A (en) | Cutting tool with stress decomposer | |
| JP7353970B2 (en) | parabolic instrument | |
| JP2019181144A (en) | Osteotomy device | |
| CN109732717B (en) | Spiral ceramic cutter tooth structure | |
| EP3773317B1 (en) | Subgingival safe end dental bur | |
| US20200155272A1 (en) | Dental carving instruments with detachable blade and related methods | |
| Krishan et al. | Endodontic rotary systems-a review | |
| CN211325413U (en) | Be applied to plastic surgery multi-angle D shape sword | |
| US10631895B2 (en) | Dental cutting tool | |
| RU2307621C1 (en) | Device for forming bone bed for dental implants | |
| US20130220485A1 (en) | Cutting tool | |
| US299872A (en) | Cutting-pliers | |
| JP6893756B1 (en) | Fish eye excision tool | |
| CN211156079U (en) | An ultrasonic bone knife head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20240607 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20250131 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20250203 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20250228 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20250516 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20250627 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20250917 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20250925 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 7750715 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |