阅读说明：本技术 一种牙科钻针 (Dental drill point ) 是由 李青 桂厚达 王帅 周颖 马雅婷 张风河 张新莲 魏秀娟 于 2020-05-26 设计创作，主要内容包括：本发明公开了一种牙科钻针,包括钻针本体,钻针本体的内部具有与外界连通的通道,通道至少具有两个折弯处；钻针本体呈锥形,通道的一端开口位于钻针本体的底面的第一侧部,通道的另一端延伸至钻针本体的底面的第二侧部并在第二侧部设有出口；通道还在钻针本体顶部设有出口。本发明能够在使用时最大化钻针的降温,防止出口堵塞。(The invention discloses a dental drill bit which comprises a drill bit body, wherein a channel communicated with the outside is arranged in the drill bit body, and the channel is at least provided with two bending parts; the drill point body is conical, an opening at one end of the channel is positioned at the first side part of the bottom surface of the drill point body, the other end of the channel extends to the second side part of the bottom surface of the drill point body, and an outlet is arranged at the second side part; the channel is also provided with an outlet at the top of the drill point body. The invention can maximize the temperature reduction of the drill point when in use and prevent the outlet from being blocked.)

1. A dental drill is characterized by comprising a drill body, wherein a channel communicated with the outside is arranged inside the drill body, and the channel is at least provided with two bending parts; the drill point body is conical, an opening at one end of the channel is positioned at the first side part of the bottom surface of the drill point body, the other end of the channel extends to the second side part of the bottom surface of the drill point body, and an outlet is arranged at the second side part; the channel is also provided with an outlet at the top of the drill point body.

2. A dental drill according to claim 1, wherein the passage comprises a bend having an angle equal to or less than the apex of the drill body.

3. A dental drill according to claim 1, wherein the drill body further comprises a rod member connected to the drill body, the opening at the other end of the passage being located in an end face of the rod member.

4. A dental drill according to claim 3, wherein the rod-like member is located centrally on the bottom surface.

5. A dental drill according to claim 1, wherein the passage comprises a second portion, a third portion, a fourth portion and a fifth portion in serial communication, the second portion being at an acute angle to the third portion, the third portion being at an acute angle to the fourth portion, the fourth portion being at a right angle to the fifth portion; the second part is connected with the third part in a communicated manner, and a plurality of outlets are formed in the top of the drill point body of the first part.

6. A dental drill according to claim 5, wherein the angle between the second portion and the third portion is equal to the tip angle of the drill body.

7. A dental drill according to claim 5, wherein the first portion defines one of a plurality of outlets at the top of the drill body, one of the outlets being located at a top corner of the drill body.

8. A dental drill according to claim 1, wherein the passage has at least one of the outlets at the top of the drill body in the form of a conical surface.

9. A dental drill according to claim 1, wherein the tip angle of the drill body is acute.

10. A dental drill according to claim 1, wherein the bottom of the drill body is narrowed to a cylindrical shape.

Technical Field

The invention relates to the field of dentistry, in particular to a dental drill bit.

Background

The implant is a metal implant which is mainly composed of titanium and is implanted into the alveolar bone, the biocompatibility is good because the implant is composed of titanium, 4-6 months are needed after the implant nail is implanted, and porcelain repair is carried out on the implant after the implant and the alveolar bone are completely combined.

When teeth are clinically planted at present, a guide plate is needed to help to determine the position of a drilled hole, but the guide plate cannot be used for water inflow and cooling, tissue burning can be caused, and operation failure is caused. The current clinical solution is to drill a second hole after a longer time after the first drilling, or to reduce the rotational speed, but the reduction is not effective.

The inventor believes that there are drill pins with holes at the top end, the drill pins are empty in the middle, and water flows out from the tip to achieve the cooling effect. However, the drill bit has problems that the middle tube is too thin, the water flow is weak, the hole at the top end is easily blocked by bone fragments and is difficult to remove, and the cooling effect is not achieved in practice.

Disclosure of Invention

Aiming at the defects of the existing drill point, the invention aims to provide a dental drill point, wherein a channel with a special shape is arranged in the drill point, so that the temperature reduction of the drill point can be maximized.

The invention aims to provide a dental drill bit.

In order to realize the purpose, the invention discloses the following technical scheme:

the invention discloses a dental drill bit, which comprises a drill bit body, wherein a channel communicated with the outside is arranged in the drill bit body, and the channel is at least provided with two bending parts; the drill point body is conical, an opening at one end of the channel is positioned at the first side part of the bottom surface of the drill point body, the other end of the channel extends to the second side part of the bottom surface of the drill point body, and an outlet is arranged at the second side part; the channel is also provided with an outlet at the top of the drill point body.

Further, the channel comprises a bend with an angle smaller than or equal to the vertex angle of the drill point body.

Further, the drill point body also comprises a rod-shaped part connected with the drill point body, and the opening at the other end of the channel is positioned on the end surface of the rod-shaped part.

Further, the rod-shaped piece is located at the center of the bottom surface.

Further, the channel comprises a second part, a third part, a fourth part and a fifth part which are communicated in sequence, wherein an acute angle is formed between the second part and the third part, an acute angle is formed between the third part and the fourth part, and a right angle is formed between the fourth part and the fifth part; the second part is connected with the third part in a communicated manner, and a plurality of outlets are formed in the top of the drill point body of the first part.

Further, the angle between the second portion and the third portion is equal to the vertex angle of the drill point body.

Further, the first part is arranged at the top of the drill point body and provided with a plurality of outlets, and one of the outlets is positioned at the top corner of the drill point body.

Further, at least one outlet of the channel at the top of the drill point body is located on the conical surface.

Further, the vertex angle of the drill point body is an acute angle.

Further, the bottom of the drill point body narrows to be cylindrical.

In the specific using process, the drill bit is used as a drill bit and matched with a drilling tool; in addition, because the channel is arranged in the drill point body, the inlet of the channel communicated with the outside is arranged in the drill point body, and the water is connected with a water source, and flows out from the outlet arranged on the side surface of the drill point body through the channel in the drill point body.

Compared with the prior art, the invention has the following beneficial effects:

1) according to the invention, the position of the outlet is increased, the outlet can be arranged on the bottom surface of the drill point body, the problem that the outlet arranged at the top corner of the drill point body is blocked to cause unsmooth water circulation is avoided, chips can be effectively prevented from directly entering the channel from the outlet at the top corner of the drill point body, and the outlet of the channel of the drill point body is further prevented from being blocked by the chips.

2) In the invention, the shape of the channel is set to be a channel with a plurality of bends, so that the contact area of water and the drill bit body is increased to a certain extent, and more heat generated by the drill bit body can be taken away by the water through the channel.

3) According to the invention, the specific shape of the channel is tightly attached to the conical surface of the drill bit body, so that heat from the conical surface can be taken away through the channel, the heat from the conical surface is generated due to friction between the conical surface and teeth, the channel tightly attached to the conical surface can avoid deformation of the drill bit body caused by heat generated by friction, and the experience of a patient in hospitalizing is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

Figure 1 is a schematic cross-sectional view of an embodiment taken along the central axis of the drill bit,

fig. 2 is a schematic view of an embodiment showing an internal passage structure.

In the figure, 1, a drill point body, 21, a first part, 22, a second part, 23, a third part, 24, a fourth part, 25, a fifth part, 211, an outlet, 212, a first included angle, 221, a second included angle, 231, a third included angle, 241, a fourth included angle, 251, an inlet, 3 and a rod-shaped piece.

Detailed Description

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In view of the above-mentioned shortcomings of the prior art drill, the present invention is directed to a dental drill having a specially shaped channel formed therein to maximize the cooling of the drill, and will now be further described with reference to the accompanying drawings and embodiments.