CN112274273A

CN112274273A - Drill bit for dental implantation

Info

Publication number: CN112274273A
Application number: CN202011124861.2A
Authority: CN
Inventors: 冯崇敬; 王昌健; 杨维; 刘俊平; 鄢新章; 刘谋山
Original assignee: Chengdu Besmile Biotechnology Co ltd
Current assignee: Chengdu Besmile Biotechnology Co ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-01-29
Anticipated expiration: 2040-10-20
Also published as: CN112274273B

Abstract

The invention relates to the technical field of dental instruments, in particular to a drill bit for dental implantation. The specific technical scheme is as follows: a drill bit for dental implantation comprises a drill bit and a drill rod which are fixed by a substrate, wherein a bearing is sleeved on the drill rod, a base station is fixed on the outer ring of the bearing, a water storage cavity is arranged at the axis of the drill bit, a water outlet channel communicated with the water storage cavity is arranged on the water storage cavity, a chip suction cavity is arranged in the drill bit around the water storage cavity, and a plurality of chip suction holes communicated with the chip suction cavity are arranged on the side wall of the drill bit; the base plate is provided with a plurality of annular chip suction holes communicated with the chip suction cavity and a plurality of water inlet channels communicated with the water storage cavity, the base platform is provided with an annular chip suction groove communicated with the annular chip suction holes and an annular water inlet groove communicated with the water inlet channels, the annular chip suction groove and the annular water inlet groove are respectively provided with a gas port and a water inlet, and the gas port and the water inlet are respectively connected with a gas pump and a water pump through pipelines. The drill provided by the invention can cool and remove chips simultaneously in the working process.

Description

Drill bit for dental implantation

Technical Field

The invention relates to the technical field of dental instruments, in particular to a drill bit for dental implantation.

Background

The existing drill bit for the dental implant is made of stainless steel or hard alloy materials, the drill bit is connected with a mobile phone for the implant through a handle, the mobile phone rotates at high speed to drive the drill bit to rotate, a working part directly acts on an alveolar bone of a human body, a hole is drilled on the alveolar bone in a mode of end cutting and side edge cutting, and after the hole is drilled, the mobile phone reversely rotates and exits the drill bit. The size of the drill bit is matched with the diameter of the dental implant, and the operator selects the matched drill bit according to the size of the implant required to be used.

The drill bits for planting are divided into a positioning drill, a pioneer drill, a guide drill, a reamer and a forming drill, the material is stainless steel, and the most frequently used are the pioneer drill and the reamer. The two kinds of drills directly act on the alveolar bone to punch holes meeting the requirements.

Because the drill bit has high use frequency and high cutting force, the service life of the cutting edges of the end surface and the side surface is about 10-15 times according to the hardness of bones during cutting. After the service life is reached, the size and the strength of the cutting edge are reduced, and the cutting capability is limited. Therefore, the drill bit needs to be cooled, the service life of the drill bit is prolonged, and during the drilling process, chippings are generated, the difficulty of drilling is increased, and the blocking phenomenon may be caused, so that the chippings need to be removed while cooling.

Furthermore, the drill may cause the hole drilled in the alveolar bone to be inclined due to the size of the space in the mouth during the drilling of the alveolar bone of the posterior alveolar tooth, and may even fail to successfully drill the alveolar bone due to the length of the drill rod. Therefore, there is a need for a drill bit that is capable of adjusting the length of the drill bit.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a drill bit for dental implantation, which can cool the drill bit and remove chips during the working process of the drill bit.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the invention discloses a drill bit for dental implantation, which comprises a drill rod and a drill bit fixedly connected with the drill rod, wherein the drill bit and the drill rod are fixed through a substrate, a bearing is sleeved on the drill rod and positioned above the substrate, a base station is fixed on the outer ring of the bearing, the base station is attached to the substrate, a water storage cavity is arranged at the axis of the drill bit, a water outlet channel communicated with the water storage cavity is arranged on the water storage cavity, a chip suction cavity is arranged in the drill bit around the water storage cavity, and a plurality of chip suction holes communicated with the chip suction cavity are arranged on the side wall of the drill bit; be provided with the several on the base plate and inhale the communicating annular chip suction hole in bits chamber and several and the communicating inhalant canal in water storage chamber, be provided with on the base station with the annular chip suction hole communicates with each other annular chip suction groove and with the communicating annular intake chamber in inhalant canal, be provided with gas port and water inlet on annular chip suction groove and the annular intake chamber respectively, there are air pump and water pump through pipe connection respectively on gas port and the water inlet.

Preferably, the drill rod is divided into a fixed rod and a movable rod, a base is arranged on the fixed rod in the circumferential direction, an annular groove is formed in the base, a cylindrical groove with a downward opening is formed in the axis of the movable rod, the fixed rod above the base extends into the cylindrical groove, and the bottom of the movable rod is inserted into the annular groove; and a telescopic mechanism which is positioned in the cylindrical groove and is used for enabling the drill bit to stretch and retract is arranged between the fixed rod and the movable rod.

Preferably, the bottom of the annular groove is symmetrically provided with two protrusions, two sides of each protrusion are inclined planes, the inclined planes are provided with a plurality of arc-shaped grooves, and the arc-shaped grooves are positioned on a straight line and in the middle of the inclined planes; the bottom of movable rod be provided with the breach of protruding looks adaptation, it is right to form between two breachs the movable rod carries out spacing piece, the bottom of spacing piece is provided with first recess, be provided with the stopper in the first recess, it is fixed through the spring between stopper and the first recess.

Preferably, the telescopic mechanism comprises a limiting groove arranged at the top of the fixing rod, a limiting mechanism arranged in the limiting groove and a driving mechanism for driving the limiting mechanism to move up and down.

Preferably, the fixing rod above the base is divided into a smooth surface section and an external thread section from the top downwards in sequence, the smooth surface section is in clearance fit with the cylindrical groove, and the external thread section is matched with an internal thread section arranged on the inner wall of the cylindrical groove.

Preferably, the limiting groove is divided into a light hole section and a thread section from the notch downwards, a plurality of limiting holes which are inclined downwards are formed in the side wall of the limiting groove of the light hole section, limiting columns are arranged in the limiting holes, stop blocks are arranged at the end portions of the limiting columns in the limiting grooves, and second grooves matched with the stop blocks are formed in the limiting holes.

Preferably, the limiting mechanism comprises a limiting upright post, a driving post and a fixing post, wherein the limiting upright post, the driving post and the fixing post are sequentially fixed, the side wall of the driving post is provided with a thread tooth, the fixing post is matched with the limiting groove, and baffles are arranged at the top of the limiting upright post, between the limiting upright post and the driving post and between the driving post and the fixing post; a limiting sleeve is arranged in the cylindrical groove, and the limiting upright post penetrates through the limiting sleeve; when the fixed column is fixed in the limiting groove, the baffle between the limiting upright column and the driving column is attached to the top of the movable rod.

Preferably, the fixing column is divided into a fastening column fixed with the baffle, a circular truncated cone fixed with the fastening column and a threaded column fixed with the end face of the small-diameter end of the circular truncated cone, and the threaded column is matched with the threaded section of the limiting groove.

Preferably, actuating mechanism is including setting up on the movable rod, and with the communicating through-hole in cylindrical slot, the vertical bracing piece that is fixed with in the through-hole, the cover is equipped with the bearing on the bracing piece, be provided with drive gear on the bearing, drive gear meshes with the thread tooth on the drive post mutually.

Preferably, the length of the bearing is greater than the thickness of the driving gear, an annular groove is formed in the outer ring of the bearing, and a driving belt is sleeved in the annular groove; be used for driving drill pivoted planter tool internal fixation to have the stand, be fixed with the action wheel in proper order on the stand and follow the driving wheel, the driving belt cover is established in follow driving wheel and annular groove, be connected with the motor through the drive belt on the action wheel, the motor sets up in dental planter, dental planter and planter tool electric connection.

The invention has the following beneficial effects:

1. according to the invention, the drill bit is provided with the water storage cavity and the chip suction cavity which are not communicated with each other, the water storage cavity is communicated with the outside through the water outlet channel, then the base plate is used as a transition part, and the base plate arranged on the fixed rod is rotated, and the annular chip suction groove and the annular water inlet groove are arranged on the base plate, so that water is introduced into the water storage cavity of the drill bit and is sprayed out along with the rotation of the drill bit, and the purpose of cooling the drill bit is achieved; meanwhile, the chips in the oral cavity and the sprayed water are sucked into the chip suction cavity through the chip suction cavity and the chip suction holes and are discharged through the annular chip suction groove, so that the chip removal effect is realized. The drill bit can effectively ensure that water and scraps in the outlet do not need to be frequently discharged in the process of drilling the alveolar bone of a patient, the head of the drill bit can be cooled in the whole process, the scraps can be automatically removed, the service life of the drill bit is prolonged, the phenomenon of locking in the drilling process is prevented, and the success rate of the operation is increased.

2. According to the invention, the drill rod is arranged into the fixed rod and the movable rod, the stability of the movable rod and the fixed rod is ensured by a double fixing mode of thread fixing and limiting mechanism fixing between the fixed rod and the movable rod, and even if the part of the fixed rod extends out of the movable rod to increase the length of the drill bit, the stability of the movable rod and the fixed rod is not influenced, so that the purpose of flexibly controlling the length of the drill bit is achieved, and the drill bit can adapt to different oral environments.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is an enlarged view of a portion C of FIG. 1;

FIG. 4 is a view taken along line A-A of FIG. 1;

FIG. 5 is a view taken along line B-B of FIG. 4;

FIG. 6 is another arrangement of the view shown in FIG. 4 from the direction B-B;

FIG. 7 is a layout view of the annular chip suction passage and the water inlet passage on the substrate;

FIG. 8 is a schematic structural view of a base and a fixing rod disposed above the base;

FIG. 9 is a schematic mechanical view of the base;

FIG. 10 is a schematic mechanism diagram of a spacing mechanism;

FIG. 11 is a schematic view of the movable rod;

FIG. 12 is an enlarged view of portion B of FIG. 11;

in the figure: the drill rod comprises a drill rod 1, a fixed rod 1a, a movable rod 1b, a limiting piece 1c, a drill bit 2, a base plate 3, a bearing 4, a base table 5, a water storage cavity 6, a water outlet channel 7, a chip suction cavity 8, an annular chip suction channel 9, a water inlet channel 10, an annular chip suction groove 11, an annular water inlet groove 12, a base 13, an annular groove 14, a cylindrical groove 15, a protrusion 16, an arc-shaped groove 17, a notch 18, a first groove 19, a limiting block 20, a limiting groove 21, a unthreaded hole section 21a, a threaded section 21b, a smooth surface section 22, an external threaded section 23, an internal threaded section 24, a limiting column 25, a stop block 26, a limiting upright column 27, a driving column 28, a fixed column 29, a fastening column 29a, a circular truncated cone 29b, a threaded column 29c, a baffle 30, a limiting sleeve 31, a through hole 32, a supporting rod 33.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Unless otherwise indicated, the technical means used in the examples are conventional means well known to those skilled in the art.

Referring to fig. 1-12, the invention discloses a drill bit for dental implantation, which comprises a drill rod 1 and a drill bit 2 fixedly connected with the drill rod 1, wherein the drill bit 2 is fixed with the drill rod 1 through a substrate 3, a bearing 4 is sleeved on the drill rod 1 above the substrate 3, namely, the drill rod 1 is fixed in an inner ring of the bearing 4, and an outer ring of the bearing 4 is fixed with a base station 5, namely, the base station 5 is sleeved on an outer ring of the bearing 4 and is fixed; the base station 5 is attached to the substrate 3, and water flow and debris are prevented from overflowing from a gap between the base station 5 and the substrate 3.

The axial center of the drill bit 2 is provided with a water storage cavity 6, the water storage cavity 6 is provided with a water outlet channel 7 communicated with the water storage cavity 6, a chip suction cavity 8 is arranged in the drill bit 2 around the water storage cavity 6, and the side wall of the drill bit 2 is provided with a plurality of chip suction holes 8a communicated with the chip suction cavity 8. The chip suction cavity 8 and the water storage cavity 6 need to be explained as follows: in the present invention, there are two ways to arrange the water outlet channels 7, as shown in fig. 5, a plurality of water outlet channels 7 are arranged along the length direction of the outer wall of the water storage cavity 6, and it should be default that each water outlet channel 7 is provided with a water outlet hole, and the water outlet hole is communicated with the water storage cavity 6. A chip suction cavity 8 is arranged between the adjacent water outlet channels 7. Referring to fig. 6, only one water outlet channel 7 is vertically arranged on the outer wall of the water storage cavity 6 and communicated with the water storage cavity 6, and a plurality of water outlet holes are arranged in the water outlet channel 7 and on the side wall of the drill bit 2.

In order to realize the water communication to the water storage cavity 6 and the suction of the scraps and water in the scrap suction cavity 8, a plurality of annular scrap suction channels 9 communicated with the scrap suction cavity 8 and a plurality of water inlet channels 10 communicated with the water storage cavity 6 are arranged on the base plate 3, an annular scrap suction groove 11 communicated with the annular scrap suction channel 9 and an annular water inlet groove 12 communicated with the water inlet channels 10 are arranged on the base platform 5, an air port and a water inlet are respectively arranged on the annular scrap suction groove 11 and the annular water inlet groove 12, and an air pump and a water pump are respectively connected on the air port and the water inlet through pipelines. It should be noted that: referring to fig. 7, the annular chip suction passage 9 and the water inlet passage 10 are not completely annular and do not penetrate the base 5. One end of the water inlet channel 10 is concentrated at the center of the bottom surface of the substrate 3, and the other end is uniformly distributed on the top surface of the substrate 3 in an annular shape and is positioned between the annular chip suction channel 9 and the center of the substrate 3; similarly, the annular water inlet groove 12 is positioned between the annular chip suction groove 11 and the center of the abutment 5. Moreover, the annular water inlet groove 12 is circular, all the water inlet channels 10 are communicated with the annular water inlet groove 12, and the width of the annular water inlet groove 12 is larger than or equal to the width of the water inlet pore passage 10 on the substrate 3. Similarly, the annular chip suction grooves 11 are annular and are communicated with all the annular chip suction channels 9, and the width of the annular chip suction grooves 11 is larger than or equal to the width of the annular chip suction channels 9 on the base plate 3. Finally, in the process that the base plate 3 rotates along with the drill bit 2, the annular chip suction groove 11 and the annular chip suction channel 9 are always kept in a communicated state, and meanwhile, the annular water inlet groove 12 and all the water inlet channels 10 are also always kept in a communicated state. In addition, in order to prevent the drill 2 from rotating with the base 5 during rotation, a plurality of support posts (not shown) fixed to the implant handpiece are provided on the top of the base 5.

In the use, drill bit 2 rotates, leads to water simultaneously to annular intake chamber 12 interior through the water inlet, enters into inhalant canal 10, enters into water storage chamber 6 at last, and at the in-process that leads to water, rivers have certain pressure, and drill bit 2 is at the pivoted in-process, and under the effect of rethread centrifugal force, the water that makes enter into water storage chamber 6 spouts through exhalant canal 7 to drill bit 2 cools off. And when water cooling is carried out, the air pump is also started, water sprayed by the drill bit 2 and chips generated in the cutting process are sucked into the chip suction cavity 8 through the chip suction hole 8a and then sucked into the annular chip suction groove 11 through the annular chip suction channel 9 to be pumped out, so that the water and the chips in the outlet do not need to be frequently discharged in the process of drilling the alveolar bone of a patient, the head of the drill bit can be cooled, the chips can be automatically removed, the service life of the drill bit is prolonged, the blocking phenomenon in the drilling process is prevented, and the success rate of the operation is increased.

Further, in order to realize that the drill bit 2 can extend or shorten in the using process, the drill rod 1 is divided into a fixed rod 1a and a movable rod 1b, a base 13 is fixedly arranged at a position, close to the middle of the fixed rod 1a, of the fixed rod 1a in the circumferential direction, an annular groove 14 with an upward opening is formed in the base 13 around the axis of the base, a cylindrical groove 15 with a downward opening is formed in the axis of the movable rod 1b, the fixed rod 1a above the base 13 extends into the cylindrical groove 15, and the bottom of the movable rod 1b is inserted into the annular groove 14; a telescopic mechanism for extending and retracting the drill 2 is arranged between the fixed rod 1a and the movable rod 1b in the cylindrical groove 15.

Furthermore, in order to perform auxiliary limiting on the movable rod 1b and prevent the movable rod 1b from rotating in the annular groove 14, two protrusions 16 are symmetrically arranged at the bottom of the annular groove 14, two sides of each protrusion 16 are inclined planes, a plurality of arc-shaped grooves 17 are arranged on the inclined planes, and the arc-shaped grooves 17 are located on a straight line and in the middle of the inclined planes; the bottom of the movable rod 1b is provided with a notch 18 matched with the bulge 16, a limiting piece 1c for limiting the movable rod 1b is formed between the two notches 18, the two sides of the limiting piece 1c in the width direction are in arc transition, and the limiting piece 1c can rotate to the inclined plane of the bulge 16 conveniently. The bottom of spacing piece 1c is provided with first recess 19, is provided with stopper 20 in the first recess 19, passes through spring fastening between stopper 20 and the first recess 19. It should be noted that: when the bottom of the movable rod 1b contacts the bottom of the annular groove 14, the two stopper pieces 1c are located at positions between the adjacent projections 16 (the stopper 20 is not compressed), and the notches 18 are located at the tops of the two projections 16. When the movable rod 1b is rotated, the limiting block 20 is compressed into the first groove 19, and along with the rotation of the movable rod 1b, the two limiting pieces 1c rotate to the inclined plane of the protrusion 16, and when the movable rod rotates to the position of the arc-shaped groove 17, the limiting block 20 is popped out by the spring, so that the limiting block 20 is arranged in the arc-shaped groove 17. During the rotation of the movable rod 1b, the fixed rod 1a is rotated out of the movable rod 1b by a height corresponding to the distance between the stopper 20 and the bottom of the annular groove 14 on the inclined plane and the length of the drill 2.

And the telescopic mechanism capable of fixing and unlocking the fixed rod 1a and the movable rod 1b comprises a limiting groove 21 which is arranged at the top of the fixed rod 1a and has an upward opening, a limiting mechanism arranged in the limiting groove 21 and a driving mechanism for driving the limiting mechanism to move up and down.

Wherein, the outer side wall of the fixed rod 1a above the base 13 is divided into a smooth surface section 22 and an external thread section 23 from the top to the bottom in turn, the smooth surface section 22 is in clearance fit with the cylindrical groove 15, preferably the clearance is equal to zero, if the clearance between the smooth surface section 22 and the cylindrical groove 15 can not be processed to be zero, the use of the invention is not affected, and the external thread section 23 is matched with an internal thread section 24 arranged on the inner wall of the cylindrical groove 15. It should be noted that: when the limiting piece 1c is located between the two protrusions 16, the position on the inner wall of the movable rod 1b, which is flush with the top surface of the base 13, is an initial position, and is set upwards to be an internal thread section 24, and the length of the internal thread section 24 is the same as that of the external thread section 23, so that the fixed rod 1a and the movable rod 1b are fixed through threads.

Simultaneously, spacing groove 21 is divided into unthreaded hole section 21a and screw thread section 21b from the notch downwards, is provided with the spacing hole of several slant decurrent on the lateral wall of the spacing groove 21 of unthreaded hole section 21a, specifically is: the limiting hole is formed by inclining downwards from the inner wall of the limiting groove 21 to the inner wall of the cylindrical groove 15. The limiting hole is internally provided with a limiting column 25, the limiting column 25 is in clearance fit with the limiting hole, and the minimum clearance is zero. The axis of the stopper post 25 intersects with the axis of the stopper groove 21. In order to avoid the separation of the limiting post 25 from the limiting hole, a stop 26 is arranged at the end of the limiting post 25 in the limiting groove 21, and a second groove matched with the stop 26 is arranged on the limiting hole. It should be noted that: the second groove is arranged on the inner wall of the cylindrical groove 15 and communicated with the limiting hole, the stop dog 26 is identical to the second groove in size and shape, and the stop dog 26 can be just arranged in the second groove. And the other end of the limiting column 25 is an inclined arc-shaped surface which can be just attached to the inner wall of the column-shaped groove 15. The length of the limiting column 25 is set according to actual conditions, and when the fixing column 29 is fixed in the limiting groove 21, the limiting column 25 and the inner wall of the column-shaped groove 15 are in a tightly-pushed state, but not in a direct contact state. Therefore, it can be considered that the stopper post 25 is protruded outside the side wall of the fixing rod 1a, and the protruded portion is disposed according to the actual situation, and is generally larger than the gap between the fixing rod 1a and the cylindrical groove 15. This is provided mainly to prevent the external thread section 23 of the fixed rod 1b and the internal thread section 24 of the cylindrical groove 15 from being loosened due to mechanical vibration during the operation of the drill 2, resulting in unstable connection of the fixed rod 1a and the movable rod 1 b. The limiting column 25 is arranged obliquely, so that the limiting column 25 can move outwards towards the smooth surface section 22 along the limiting hole in the process that the fixing column 29 is inserted into the limiting groove 21, and the limiting column 25 is prevented from being clamped in the limiting hole.

The limiting mechanism comprises a limiting upright post 27, a driving post 28 and a fixing post 29, wherein the limiting upright post 27, the driving post 28 and the fixing post 29 are sequentially fixed, the side wall of the driving post is provided with thread teeth, the fixing post 29 is matched with the limiting groove 21, and baffles 30 are arranged at the top of the limiting upright post 27, between the limiting upright post 27 and the driving post 28 and between the driving post 28 and the fixing post 29; a limiting sleeve 31 is arranged in the cylindrical groove 15, the limiting upright post 27 penetrates through the limiting sleeve 31, a baffle 30 fixed at the top of the limiting upright post 27 is positioned at the top of the limiting sleeve 31, and the diameter of the baffle 30 is larger than that of the limiting upright post 27, the driving post 28 and the fixing post 29; when the fixed column 29 is fixed in the limiting groove 21, the baffle 30 between the driving column 28 and the fixed column 29 is attached to the top of the movable rod 1 b. It should be noted that: the limiting upright post 27 can slide up and down in the limiting sleeve 31, and the limiting sleeve 31 can prevent the limiting mechanism from inclining in the cylindrical groove 15, so that the fixing column 29 cannot be successfully fixed in the limiting groove 21, and the limiting mechanism can be ensured to be coaxial with the movable rod 1b all the time by the limiting sleeve 31. The stop 30 between the stop post 27 and the drive post 28 prevents the drive gear 34 from disengaging the drive post 28.

The fixed column 29 is divided into a fastening column 29a fixed to the stopper 30 (the stopper 30 between the driving column 28 and the fixed column 29), a circular truncated cone 29b fixed to the fastening column 29a, and a threaded column 29c fixed to the small-diameter end face of the circular truncated cone 29b, and the threaded column 29c is fitted to the threaded section 21b of the stopper groove 21. It should be noted that: the large diameter end diameter of the circular truncated cone 29b is equal to the diameter of the fastening post 29 a. The fixing column 29 is fixedly connected with the limiting groove 21 through threads. The arrangement of the round platform 29b can enable the limiting column 25 to gradually move towards the inner wall direction of the cylindrical groove 15 through the limiting hole until the fastening column 29a abuts against the limiting column 25 tightly. In addition, it should be noted that: both the threaded section 21b and the threaded stud 29c are comprised of straight threaded sections and tapered threaded sections, which further facilitates the positioning of the fixing stud 29 in the cylindrical recess 21.

The driving mechanism comprises a through hole 32 which is arranged on the movable rod 1b and communicated with the cylindrical groove 15, a supporting rod 33 is vertically fixed in the through hole 32, a bearing is sleeved on the supporting rod 33, a driving gear 34 is arranged on the bearing, and the driving gear 34 is meshed with the thread teeth on the driving column 28. When the stopper mechanism completes the fixing of the fixing lever 1a, the driving gear 34 is located at the top of the driving column 28. When the driving gear 34 rotates, the driving post 28 is driven to rotate, so that the fixed post 29 is screwed out of the limiting groove 21, and the fixing of the movable rod 1b by the limiting post 25 is released. The stationary rod 1a is then extended out of the cylindrical slot 15 by screwing the movable rod 1b, and the number of rotations of the movable rod 1b determines the length of the stationary rod 1a extended out of the cylindrical slot 15. This is done by manually driving the drive gear 34 to rotate.

Of course, the driving gear 34 may be driven to rotate by a motor. The method specifically comprises the following steps: the length of the bearing is set to be larger than the thickness of the driving gear 34, an annular groove is arranged on the outer ring of the bearing, and a driving belt 35 is sleeved in the annular groove. Be used for driving drill 2 pivoted to be fixed with stand 36 in the cell-phone, be fixed with action wheel 37 and follow driving wheel 38 on the stand 36 in proper order, driving band 35 cover is established in following driving wheel 38 and annular groove, is connected with the motor through the drive belt on the action wheel 37, and the motor setting is in the dental implant machine, dental implant machine and cell-phone electric connection. It should be noted that: the dental planter and the planter are both existing devices, and the structure and the connection mode of the planter for driving the drill bit 2 and the drill rod 1 to rotate are both prior art, which is not described herein again. Of course, the upright post 36, the driving wheel 37 and the driven wheel 38 can also be arranged on the outer wall of the mobile planter, a protective shell is arranged on the outer wall of the mobile planter, and the upright post 36, the driving wheel 37 and the driven wheel 38 are arranged in the protective shell.

It should be noted that: according to the invention, the rotation direction of the drill rod 1 and the drill bit 2 driven by the planting mobile phone is the same as the screwing direction of the movable rod 1b and the fixed rod 1a, so that the movable rod 1b and the fixed rod 1a are prevented from loosening in the rotation process of the drill rod 1 and the drill bit 2. In the present invention, the fixing rod 1a is fixed in the cylindrical groove 15 by the limiting post 25, and the internal thread section 24 on the inner wall of the cylindrical groove 15 and the external thread section 23 on the fixing rod 1a are also used for fixing the fixing rod 1a and the movable rod 1b, and a double fixing mode is adopted to make the connection between the movable rod 1b and the fixing rod 1a more firm.

When the drill bit drills, the length of the drill bit is found to be insufficient, the drill bit needs to be extended for a certain length to achieve final drilling work, at the moment, the drill bit 2 and the drill rod 1 are stopped to rotate, then the driving gear 34 is driven to rotate in a manual or motor-driven mode, the driving column 28 is driven to rotate, the fixing column 29 is led to withdraw from the limiting groove 21, and the fixing of the limiting column 25 is loosened. And finally, the movable rod 1b is manually rotated to enable the limiting piece 1c to rotate in the annular groove 14, the limiting piece 20 can be compressed in the first groove 19 and then can make a sound in the arc-shaped groove 17, so that the limiting piece 20 can be ensured to walk on the inclined plane of the protrusion 16 to form a plurality of arc-shaped grooves 17, the length of the fixed rod 1a extending from the cylindrical groove 15 is controlled, and the extension of the drill bit 2 is realized. Then, the driving gear 34 is rotated in the reverse direction, the driving post 28 is moved downward, the fixing post 29 is screwed into the stopper groove 21, and in this process, the stopper post 25 abuts against the inner wall of the cylindrical groove 15, thereby completing the fixing of the fixing lever 1 a. And then drives the drill bit 2 again to work. During drilling, the length of the drill bit 2 is adjusted in the manner described above.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims

1. The utility model provides a drill bit for dental implantation, includes drilling rod (1) and drill bit (2) with drilling rod (1) fixed connection, its characterized in that: the drill bit (2) and the drill rod (1) are fixed through a base plate (3), a bearing (4) is sleeved on the drill rod (1) and positioned above the base plate (3), a base station (5) is fixed on the outer ring of the bearing (4), the base station (5) is attached to the base plate (3), a water storage cavity (6) is arranged at the axis of the drill bit (2), a water outlet channel (7) communicated with the water storage cavity (6) is arranged on the water storage cavity (6), a chip suction cavity (8) is arranged in the drill bit (2) in a manner of surrounding the water storage cavity (6), and a plurality of chip suction holes (8a) communicated with the chip suction cavity (8) are formed in the side wall of the drill bit (2); be provided with the several on base plate (3) and inhale bits chamber (8) communicating annular inhale bits passageway (9) and several and water storage chamber (6) communicating inhalant canal (10), be provided with on base station (5) with the annular inhale bits passageway (9) communicate with each other annular inhale chip groove (11) and with inhalant canal (10) communicating annular intake chamber (12), be provided with gas port and water inlet on annular inhale chip groove (11) and annular intake chamber (12) respectively, there are air pump and water pump through the pipe connection respectively on gas port and the water inlet.

2. A dental implant drill according to claim 1, further comprising: the drill rod (1) is divided into a fixed rod (1a) and a movable rod (1b), a base (13) is arranged on the circumferential direction of the fixed rod (1a), an annular groove (14) is formed in the base (13), a cylindrical groove (15) with a downward opening is formed in the axis of the movable rod (1b), the fixed rod (1a) above the base (13) extends into the cylindrical groove (15), and the bottom of the movable rod (1b) is inserted into the annular groove (14); and a telescopic mechanism which is positioned in the cylindrical groove (15) and enables the drill bit (2) to stretch is arranged between the fixed rod (1a) and the movable rod (1 b).

3. A dental implant drill according to claim 2, further comprising: two protrusions (16) are symmetrically arranged at the bottom of the annular groove (14), two sides of each protrusion (16) are inclined planes, a plurality of arc-shaped grooves (17) are arranged on the inclined planes, and the arc-shaped grooves (17) are positioned on a straight line and in the middle of the inclined planes; the bottom of movable rod (1b) be provided with breach (18) of arch (16) looks adaptation, it is right to form between two breach (18) movable rod (1b) carry out spacing piece (1c), the bottom of spacing piece (1c) is provided with first recess (19), be provided with stopper (20) in first recess (19), it is fixed through the spring between stopper (20) and first recess (19).

4. A dental implant drill according to claim 3, wherein: the telescopic mechanism comprises a limiting groove (21) arranged at the top of the fixed rod (1a), a limiting mechanism arranged in the limiting groove (21) and a driving mechanism for driving the limiting mechanism to move up and down.

5. A dental implant drill according to claim 4, further comprising: the fixing rod (1a) above the base (13) is divided into a smooth surface section (22) and an external thread section (23) from the top downwards in sequence, the smooth surface section (22) is in clearance fit with the cylindrical groove (15), and the external thread section (23) is matched with an internal thread section (24) arranged on the inner wall of the cylindrical groove (15).

6. A dental implant drill according to claim 4, further comprising: the limiting groove (21) is divided into a light hole section (21a) and a threaded section (21b) from the notch downwards, a plurality of limiting holes which are inclined downwards are formed in the side wall of the limiting groove (21) of the light hole section (21a), limiting columns (25) are arranged in the limiting holes, a stop block (26) is arranged at the end portion of each limiting column (25) located in the limiting groove (21), and a second groove matched with the stop block (26) is formed in each limiting hole.

7. A dental implant drill according to claim 6, further comprising: the limiting mechanism comprises a limiting upright post (27), a driving post (28) with screw teeth arranged on the side wall and a fixing post (29) matched with the limiting groove (21), wherein the limiting upright post (27), the driving post (28) and the fixing post (29) are sequentially fixed, and baffles (30) are arranged at the top of the limiting upright post (27), between the limiting upright post (27) and the driving post (28) and between the driving post (28) and the fixing post (29); a limiting sleeve (31) is arranged in the cylindrical groove (15), and the limiting upright post (27) penetrates through the limiting sleeve (31); when the fixed column (29) is fixed in the limiting groove (21), a baffle (30) between the limiting upright column (27) and the driving column (28) is attached to the top of the movable rod (1 b).

8. A dental implant drill according to claim 7, wherein: the fixing column (29) is divided into a fastening column (29a) fixed with the baffle (30), a circular truncated cone (29b) fixed with the fastening column (29a) and a threaded column (29c) fixed with the end face of the small-diameter end of the circular truncated cone (29b), and the threaded column (29c) is matched with the threaded section (21b) of the limiting groove (21).

9. A dental implant drill according to claim 6, further comprising: actuating mechanism is including setting up on movable rod (1b) and with communicating through-hole (32) in cylindrical groove (15), vertical bracing piece (33) of being fixed with in through-hole (32), the cover is equipped with the bearing on bracing piece (33), be provided with drive gear (34) on the bearing, drive gear (34) mesh mutually with the thread tooth on the drive post (28).

10. A dental implant drill according to claim 9, wherein: the length of the bearing is larger than the thickness of the driving gear (34), an annular groove is formed in the outer ring of the bearing, and a driving belt (35) is sleeved in the annular groove; be used for driving drill bit (2) pivoted to plant cell-phone built-in be fixed with stand (36), be fixed with action wheel (37) and follow driving wheel (38) on stand (36) in proper order, driving band (35) cover is established in follow driving wheel (38) and the annular groove, be connected with the motor through the drive belt on action wheel (37), the motor sets up in dental implant machine, dental implant machine and cell-phone electric connection.