CN210494267U

CN210494267U - Drill bit for drilling tooth root bone

Info

Publication number: CN210494267U
Application number: CN201920360529.2U
Authority: CN
Inventors: 安敬滨; 邵润泽; 徐大福
Original assignee: Shandong Mairui Medical Devices Co ltd
Current assignee: Shandong Mairui Medical Devices Co ltd
Priority date: 2019-03-21
Filing date: 2019-03-21
Publication date: 2020-05-12
Anticipated expiration: 2029-03-21

Abstract

A drill for drilling a tooth root bone belongs to the field of biomedical instruments. The rotary cutting drill comprises a rotary cutting drill, wherein the rotary cutting drill comprises a root tip part, a body part, a neck part and a head part, the root tip part is provided with double arc line cutting edges, the double arc line cutting edges are connected with the body part to form a row of overflow grooves, the neck part is cylindrical, the neck part is connected with the body part and continuously extends to the head part, the head part is hexagonal, the head part is fixedly connected with the neck part, and the centers of the root tip part, the body part, the neck part and the head part are all provided with connected fluid inlet holes; the problem of drill bit feed volume has been solved through the biarc line cutting edge of special design, and the fluid import of biarc line cutting edge rear side is located in the deuterogamy, and the coolant liquid is cooled off by fluid import entering drilling position, because the existence of the biarc line cutting edge of front side, can not have the piece to block up the fluid import to can exert better cooling effect, promoted dentist's treatment effeciency and effect by a wide margin.

Description

Drill bit for drilling tooth root bone

Technical Field

The utility model relates to the technical field of biomedical instruments, in particular to a drill for drilling tooth root bones.

Background

The artificial tooth implantation technology is generally applied to the oral treatment. A drill bit is usually used in the artificial tooth implantation technology, the drill bit needs to rotate at a high speed, the temperature of a bone in a tooth drilling groove cannot exceed 42 ℃ in the tooth implantation process, otherwise, bone tissues die, and the effect that an implant and surrounding bone tissues grow into a whole cannot be achieved; present equal internal cooling hole of internal cooling formula drill bit is worn out on the drill bit top, this kind of internal cooling hole is worn out on the drill bit top, because of facing to the bone that is bored when using, receive axial pressure, it is blockked up to take place the cooling hole easily, influence the normal discharge of coolant liquid, reduce the cooling effect, and because the cooling hole drill way mouth is opened on the drill bit top, the cutting edge of drill bit receives the destruction, make drill bit cutting effect reduce, the cutting force increases, thereby increase the cutting heat that the drill bit bored the bone, and then make dentist hold the dynamics of feeding not well, thereby cause the drilling slow or even around the death of bone tissue, the influence is planted tooth effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a drill bit of drilling of tooth root bone can improve dentistry drilling cooling efficiency by a wide margin, prevents to block up the cooling hole, and the accurate drilling feeds the progress, has promoted dentist's treatment effeciency and effect by a wide margin.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a drill bit of drilling of root of tooth bone, includes the rotary-cut brill, the rotary-cut brill include apex portion, somatic part, neck and head, apex portion be equipped with the biarc line cutting edge, the biarc line cutting edge links to each other with the somatic part and forms the excessive groove of row, the neck be cylindric, neck and somatic part link to each other and continue to extend to the head, the head be the hexagon, head and neck fixed connection, apex portion, somatic part, neck and head center all be equipped with continuous fluid inlet hole.

Preferably, the root tip portion further comprises a bottom surface and a top surface of the cutting groove, a fluid inlet is formed in the middle of the bottom surface of the cutting groove, the top surface is a top surface of the double-arc cutting edge, the double-arc cutting edge is two connected opposite vertex angle cutting edges, and the fluid inlet is formed in the rear side of the double-arc cutting edge.

Preferably, the body part comprises an overflow groove and a cutting edge extension surface, the overflow groove is tangent to the bottom surface of the cutting groove, the cutting edge extension surface comprises a gradual cutting edge, the cutting edge extension surface is tangent to the top surface, and the gradual cutting edge is connected with the double-arc cutting edge.

Preferably, the overflow groove is a variable radius surface, the cutting edge extension surface is an equal radius surface, the radius of the body from the root part direction to the neck part direction is larger and larger, and the cutting edge extension surface is tangent to the circumferential surface of the neck part.

Preferably, the fluid inlet hole is a circular hole with a constant diameter, the tail end of the fluid inlet hole is a fluid inlet, and a flow increasing space protruding towards the top surface is arranged on the front side of the fluid inlet.

The utility model has the advantages that: compared with the prior art, the utility model discloses a drill bit of drilling of tooth root bone, the problem of drill bit feed volume has been solved through special design's two pitch arc cutting edges, the utility model discloses a drill bit of drilling of tooth root bone is verified through the experiment, the rotatory round of drill bit, the drill bit is deepened 0.01mm for cutting piece particle size is below 0.01mm, and the oral cavity is planted jaw drilling depth and is generally 10 ~ 18mm, use 15mm as an example, only need 1500 to turn left or right and can accomplish, the fluid import of two pitch arc cutting edges rear side is located in the deuterogamy, the coolant liquid is cooled off by fluid import entering drilling position, because the existence of front side two pitch arc cutting edges, can not have piece jam fluid import, thereby can exert better cooling effect, dentistry's treatment effeciency and effect have been promoted by a wide margin.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic diagram of the whole details of the present invention.

Figure 3 is the rear shaft side schematic view of the present invention.

Fig. 4 is a front view of the present invention.

Fig. 5 is a partially enlarged schematic view of the fluid inlet of the present invention.

Fig. 6 is a schematic view of the local amplification of the flow-increasing space of the present invention.

Figure 7 is the oblique side of the utility model discloses dissects the sketch map.

Fig. 8 is a schematic view of the overlooking direction of the utility model.

Wherein, 1 tip part, 2 body parts, 3 neck parts, 4 head parts, 5 fluid inlet holes, 101 double arc cutting edges, 102 cutting groove bottom surfaces, 103 top surfaces, 201 overflow grooves, 202 cutting edge extension surfaces, 203 gradual cutting edges, 501 fluid inlets and 502 flow increasing spaces.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the embodiment shown in fig. 1, the drill for drilling the tooth root bone comprises a rotary cutting drill, the rotary cutting drill comprises a root tip portion 1, a body portion 2, a neck portion 3 and a head portion 4, the root tip portion 1 is provided with a double-arc cutting edge 101, the double-arc cutting edge 101 is connected with the body portion 2 to form an overflow groove 201, the neck portion 3 is cylindrical, the neck portion 3 is connected with the body portion 2 and extends to the head portion 4 continuously, the head portion 4 is hexagonal, the head portion 4 is fixedly connected with the neck portion 3, and the centers of the root tip portion 1, the body portion 2, the neck portion 3 and the head portion 4 are provided with a connected fluid inlet hole 5.

As shown in fig. 2 or fig. 4, the root portion 1 further includes a bottom surface 102 and a top surface 103 of the cutting groove, the middle of the bottom surface 102 of the cutting groove is a fluid inlet 501, the top surface 103 is a top surface of the double arc cutting edge 101, the double arc cutting edge 101 is two connected opposite vertex cutting edges, and the rear side of the double arc cutting edge 101 is the fluid inlet 501.

As shown in fig. 2, the body 2 comprises a drainage groove 201 and a cutting edge extension surface 202, the drainage groove 201 is tangent to the cutting groove bottom surface 102, the cutting edge extension surface 202 comprises a gradual cutting edge 203, the cutting edge extension surface 202 is tangent to the top surface 103, and the gradual cutting edge 203 is connected with the double-arc cutting edge 101.

As shown in fig. 4, the overflow groove 201 is a variable radius surface, the cutting edge extension surface 202 is a constant radius surface, the radius of the body 2 from the root 1 to the neck 3 is larger, and the cutting edge extension surface 202 is tangent to the circumferential surface of the neck 3.

As shown in fig. 5, 6, 7 and 8, the fluid inlet 5 is a circular hole with a constant diameter, the end of the fluid inlet 5 is a fluid inlet 501, and a flow-increasing space 502 protruding toward the top surface 103 is provided in front of the fluid inlet 501.

The apical part 1, the body part 2, the neck part 3 and the head part 4 are four parts from front to back on the rotary cutting drill, the double-arc cutting edge 101 is a main cutting part of the whole drill, the gradual change cutting edge 203 is a secondary cutting part, and the gradual change cutting edge 203 provides a blocking effect for the backflow of the cooling liquid formed by the drainage groove 201.

The slot floor 102 is lower than the top 103 due to the double curved cutting edge 101 and the fluid inlet 501, and the increased flow space 502 is added to increase the water output because the double curved cutting edge 101 covers about half of the fluid inlet 501.

Due to the drilling requirement, the overall radius of the body 2 increases further back, so that the radius of the cutting edge extension 202 increases closer to the neck 3, but is of equal radius in the same cross-section; since the drainage groove 201 needs to drain water, a certain space is formed, and the radius of the entire body 2 becomes larger toward the rear, and the same cross section becomes the radius.

The working principle is as follows: when the device is used, the head part 4 is firstly arranged in the drill driver, the whole rotary cutting drill rotates to drill a hole on a jaw bone during drilling, at the moment, cooling liquid flows into a cutting part through the fluid inlet hole 5 to cool, and meanwhile, the cooling liquid washes away cut chips along the discharge overflow groove 201 until the drilling depth is reached to complete tooth implantation drilling work.

The utility model discloses a drill bit of drilling of tooth root bone, the problem of drill bit feed volume has been solved through special design's two pitch arc cutting edges, the utility model discloses a drill bit of drilling of tooth root bone is verified through the experiment, the rotatory round of drill bit, the drill bit is deepened 0.01mm for the cutting piece granule size is below 0.01mm, and oral cavity planting jaw drilling depth generally is 10 ~ 18mm, use 15mm as an example, only need 1500 to turn left or right and can accomplish, the fluid intake of two pitch arc cutting edges rear side is located in the deuterogamy, the coolant liquid is cooled off by fluid intake entering drilling position, because the existence of front side two pitch arc cutting edges, can not have the piece to block up fluid intake, thereby can exert better cooling effect, dentist's treatment effeciency and effect have been promoted by a wide margin.

The above embodiments are only specific cases of the present invention, and the protection scope of the present invention includes but is not limited to the product form and style of the above embodiments, any drill bit for drilling the tooth root bone according to the claims of the present invention and any suitable changes or modifications made thereto by those skilled in the art shall fall within the protection scope of the present invention.

Claims

1. A drill for drilling a dental root bone, characterized in that: including the rotary-cut brill, the rotary-cut brill include apex portion (1), somatic part (2), neck (3) and head (4), apex portion (1) be equipped with two pitch arc cutting edge (101), two pitch arc cutting edge (101) link to each other with somatic part (2) and form row overflow tank (201), neck (3) be cylindric, neck (3) continue to extend to head (4) with somatic part (2) link to each other, head (4) be the hexagon, head (4) and neck (3) fixed connection, apex portion (1), somatic part (2), neck (3) and head (4) center all be equipped with continuous fluid inlet hole (5).

2. The drill for drilling a bone root according to claim 1, wherein: apex portion (1) still include grooving bottom surface (102) and top surface (103), grooving bottom surface (102) in the middle of be fluid inlet (501), top surface (103) be the face at biarc line cutting edge (101) top, biarc line cutting edge (101) be two continuous opposite vertex angle cutting edges, be fluid inlet (501) at the rear side of biarc line cutting edge (101).

3. The drill for drilling a bone root according to claim 1, wherein: the body part (2) comprises an overflow groove (201) and a cutting edge extending surface (202), the overflow groove (201) is tangent to the cutting groove bottom surface (102), the cutting edge extending surface (202) comprises a gradual cutting edge (203), the cutting edge extending surface (202) is tangent to the top surface (103), and the gradual cutting edge (203) is connected with the double-arc cutting edge (101).

4. A drill for drilling a bone root according to claim 3, characterized in that: the overflow groove (201) is a variable-radius surface, the cutting edge extension surface (202) is an equal-radius surface, the radius of the body part (2) from the root tip part (1) to the neck part (3) is larger and larger, and the cutting edge extension surface (202) is tangent to the circumferential surface of the neck part (3).

5. The drill for drilling a bone root according to claim 1, wherein: the fluid inlet hole (5) is a circular hole with a constant diameter, the tail end of the fluid inlet hole (5) is a fluid inlet (501), and the front side of the fluid inlet (501) is provided with a flow increasing space (502) protruding towards the top surface (103).