CN200973753Y - Disposable high-speed turbine dental drill with an solid handle - Google Patents
Disposable high-speed turbine dental drill with an solid handle Download PDFInfo
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- CN200973753Y CN200973753Y CN 200720090468 CN200720090468U CN200973753Y CN 200973753 Y CN200973753 Y CN 200973753Y CN 200720090468 CN200720090468 CN 200720090468 CN 200720090468 U CN200720090468 U CN 200720090468U CN 200973753 Y CN200973753 Y CN 200973753Y
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Abstract
The utility model aims to solve the problems of the disposable dental drill handpiece in the prior art, such as hollow handle, high cost due to the use of high-pressure resistant pipes, high price, vibration due to unsteady high-pressure airflow and water flow, and falling of various small pipes. The utility model provides a disposable dental drill handpiece with simple structure and low manufacturing cost, which comprises a handpiece head and a handle, wherein the handpiece head comprises a housing and a machine core inside the housing. The utility model is characterized in that the handpiece head and the handle are plastic; the housing is formed by adhering a housing body with a housing cover; inside a solid neck part of the housing body an inlet-air passage and a return-air passage are arranged and communicated with the interior of the housing body and a water-jet passage is arranged and communicated with the lower part of the handpiece head; and tail end of the handle is provided with a water-air rapid connection receptacle; the solid neck part of the housing body is adhesive to a solid head end of the handle in a way that the inlet-air passage, return-air passage and water-jet passage therein are communicated to each other. The utility model overcomes the disadvantages of hollow handle in the prior art.
Description
Technology neck city:
This product belongs to medical treatment and goes up the hand tool that bores the tooth of grinding one's teeth in sleep, specifically a kind of entity handle disposable high-speed dental turbine unit.
Background technology:
The dental unit that odontologist uses is made up of parts such as air compressor, air supply system, water system, high speed turbine mobile phones, and high speed turbine mobile phone is mainly reached in machine joint etc. by head, handle and constitutes.Rotor is the core of head, is combined by bearing, wind wheel and mandrel, and the rotary principle of mobile phone is to utilize mobile compressed air that wind wheel blade is exerted pressure, and promotes blade, makes the wind wheel high speed rotating.Its revolution height and balance, cutting drilling power are strong, can alleviate the labor intensity of patient's misery and odontologist, increase work efficiency, so replaced electromotive dental drill once coming out, also the appearance of high speed turbine dental drill machine being called the revolution second time of dentistry dental drill thus, also is the indispensable ideal dental equipment that the Zhi Ya of odontologist, edge are joined various artificial tooths.
Yet after odontologist used end of operation, the electromagnetic valve in the multipurpose therapy unit quit work, and electromagnetic valve upper end Exhaust Open is got rid of residual air.And the residual air after the high speed handpiece acting is also outside the mobile phone exhaustor is discharged mobile phone, high speed handpiece can quit work, and the high speed handpiece exhaustor is when discharging in the mobile phone residual air, can form generation " resorption power ", blood in the disease population, saliva and various bacterial virus partly can be drawn back in the lacuna of mobile phone, use for second patient as not strict thorough disinfection, just blood that can last patient is remaining, saliva and various bacterial virus are injected in another disease population, the cross infection various diseases is as acquired immune deficiency syndrome (AIDS), hepatitis B etc.According to World Health Organization (WHO),, still have every year people more than ten to become patients infected hiv because of seeing tooth in dental clinic and the very strict American-European countries of hospital disinfection measure.So, toothwash, control tooth, in the oral disease therapeutic such as have a denture made,, just might infect diseases such as acquired immune deficiency syndrome (AIDS) and hepatitis B if not strict as apparatus sterilizations such as the dental drill that uses, high speed handpiece, cutter heads.
And the groundwork instrument high speed handpiece that odontologist uses, every is expensive.Home-made about thousand yuan every, the need 2,3 of import are done one in unit.Accomplish the sterilization of " people one machine " strict sterilization, the high speed handpiece that each dental clinic must be bought average day outpatient service amount number equal number could have enough to meet the need sterilization, this is a no small investment number, at a high speed in machine again very " enervated ", maintain the oil dripping deficiency at ordinary times, bearing will damage, and one repair must tens up to a hundred yuan, and high temperature sterilize also reduces the service life of high speed handpiece.The disinfection cost of leader's machine is 2 yuan, and the special-purpose sterilizing equipment decontaminating apparatus of mobile phone is homemade at 30,000 yuan of one cover, and import is at 4～50,000 yuan of one cover.Have 1000 high speed handpieces to calculate by a tame large-scale specialized department for stomatology hospital, need pay 2000 yuan disinfection cost every day.One month is exactly 60,000,1 year 720000 yuan, general small-scale dental clinic also needs several ten thousand yuan every year.
In brief, common used dental drill is made by high-grade metal is accurate, cost an arm and a leg, dental drill frequency of utilization in the odontopathy diagnosis and treatment is high especially again, so can not accomplish that one suffers from machine use by standby too many dental drill, cause knowing perfectly well that dental drill has higher cross infection probability, still the situation that will generally use makes it to become the important channel that present infectious disease is propagated.This just needs disposable high speed turbine dental drill hand piece, if will reach disposable purpose, then must satisfy under the strong prerequisite of dental drill high speed rotating and balance, cutting drilling power, reduce the production cost of dental drill as much as possible, promptly abandon the financial burden that is brought after making general patient can accept to use.Causing the present too high principal element of dental drill cost of using is high-grade metal material, high pressure resistant pipeline and complicated internal structure.
Based on above-mentioned consideration, the patent No. is 01274713.0 utility model patent, a kind of disposable high-speed turbine tooth-drilling hand-held machine is disclosed, it is the handpiece body that is connected with the dress drill point at the head of machine handle, the afterbody of machine handle connects water, gas quick connector, turbine drives turbine wheel shaft and makes the drill point rotation in its handpiece body, drill point one end is held mechanisms grip, high pressure air flue, water channel and return-air road from water, gas quick connector one through to handpiece body, the rotation of driving turbine, the high pressure water channel leads to handpiece body from water, gas quick connector, and dental drill places and meets in the packing of requiring of sterilizing; Handpiece body made from easy processing metal and inner turbine mechanism thereof be connected and fixed with engineering plastics, the nonmetal machine handle of making of rubber, the turbine wheel shaft end that drill point one side is installed in handpiece body is covered with gas-tight resorption glue cover, is connected with anti-resorption check valve in the middle of being positioned at the high pressure water channel at machine handle place.This disposable high-speed turbine tooth-drilling hand-held machine is though make handpiece body complex structure, manufacturing cost height with easy processing metal.
The patent No. is 200480006791.3 American patent of invention, discloses a kind of disposable dental instrument of compressed gas-driven type, uses when being used for that workpiece carried out dental procedure.Cooperate shell (30,32) and core body (34) to constitute by two.Each shell (30,32) has mating surface, and uses various methods of attachment to make shell (30,32) combination to guarantee to realize a kind of fluid-tight, fine dental instrument.Slender body (910) has the pipeline (14) of the bottom (16) of an end that penetrates body (10).Pipeline (914) allows light beam (18), pressurised stream (20) and compressed air stream (22) to enter, and a plurality of passages (26) are communicated with pipeline (14) and are used to make light beam (18), pressurised stream (20) and compressed air stream (22) to pass through body (10).The head (44) that is positioned at the other end of body (10) is installed turbine wheel shaft (72) at the bearing surface (64) that prevents to vibrate with noise rotatably.Turbine wheel shaft (72) comprises turbo blade (74) and is used for removably dental drill (56) being attached to rotation axial holes for clamping (80).The opening (48,54) of the contiguous head (44) in the body (10) allows light beam (18), pressurised stream (20) and compressed air stream (22) are discharged with the direction towards dental drill (56), thereby makes dental drill (56), light beam (18), pressurised stream (20) and compressed air stream (22) all can converge in the workpiece place.This is exactly disposable high-speed turbine tooth-drilling hand-held machine, its description handle is a blank pipe, in the middle of pipe is interior supporter is set vertically, and various tubules are set in the pipe, this disposable high-speed turbine tooth-drilling hand-held machine, because handle is a blank pipe, the various tubules that are provided with in the pipe are high pressure resistant materials, to adapt to high pressure draught and current, high pressure resistant material cost height, also correspondingly increased the complete machine cost, moreover just produced vibration when high pressure draught and flow instability, caused that easily various tubules come off.
The patent No. is 200610200742 utility model patent, a kind of disposable use high speed turbine dental drill hand piece is disclosed, the employing engineering plastics are once molding formed, the rear operating handle structure of a plurality of parts has been become a part, this machine handle one end links to each other with machine handle before the mobile phone, the other end is made and is adapted to the various fast tail structures of inserting the air water joints, it is characterized in that: link to each other with machine handle before the mobile phone and partly adopt connected structure, and seal trachea and water pipe from handpiece body with the O RunddichtringO.Machine handle rear portion can be designed to the various structures of different size, can patch the various fast air water joint of inserting from dental unit.This invention to the contribution of prior art is, the part hand grip control is made the entity handle, various passages are set in the handle, but the tubule of blank pipe handle and various high pressure resistant material still will be used in its front portion, still can't resolve the inherent shortcoming of blank pipe handle.
Summary of the invention:
The purpose of this utility model, the handle that is the disposable dental drill existence of solution prior art is a blank pipe, the various tubules that are provided with in the pipe are high pressure resistant material cost height, increase the defective of complete machine cost, and just produce vibration when high pressure draught and flow instability, cause the inherent shortcoming that various tubules come off easily, provide a kind of overall structure simple, cheap disposable dental drill.
The technical solution of the utility model is:
A kind of entity handle disposable high-speed dental turbine unit, constitute by head and handle, head is by the head shell, movement in the head shell constitutes, it is characterized in that: head shell and handle are plastics, the head shell is by head shell and head cap bonding, in the entity cervical region of head shell, inlet channel and the return gas channel in the head shell led in setting, and the water spray passage lead to the head bottom is set, the handle tail end is the fast patch plug of aqueous vapor, the entity cervical region of head shell and entity handle head end bonding, inlet channel, return gas channel, the corresponding connection of water spray passage in the two.
Above-mentioned handle is by two joint entity handle bondings, it is prosthomere entity handle and deutomerite entity handle bonding, prosthomere entity handle head end and head bonding, deutomerite entity handle tail end is the fast patch plug of aqueous vapor, the corresponding connection with the water spray passage of inlet channel, return gas channel in the entity cervical region of head shell and the two joint entity handles.
Above-mentioned inlet channel and return gas channel are horizontally sets, and the water spray passage places below inlet channel and the return gas channel.
Above-mentioned head bottom is provided with jet channel, and jet channel is communicated with inlet channel.
Above-mentioned 3 head bottom is provided with jet channel, jet channel place the water spray passage below along the fast patch plug of aqueous vapor that axially leads to the handle tail end in the handle.
Above-mentioned water spray passage and jet channel are vertical settings in the entity cervical region of head shell, prosthomere entity handle, and water spray passage and jet channel change horizontally set into by vertically being arranged in the handle to the fast patch plug of aqueous vapor of front end in deutomerite entity handle.
Above-mentioned 5 described two joint entity handles, wherein deutomerite entity handle is made of two joints, and promptly deutomerite leading portion entity handle and deutomerite rear entity handle bond the corresponding connection with jet channel of inlet channel, return gas channel, water spray passage in it between two joints.
Above-mentioned water spray passage and jet channel are vertical settings in deutomerite leading portion entity handle, and water spray passage and jet channel change horizontally set into by vertically being arranged in the handle to the fast patch plug of aqueous vapor of front end in deutomerite rear entity handle.
All above-mentioned described bondings are the bondings of pegging graft, the inlet channel of Lian Tonging, return gas channel, water spray passage and jet channel each other, and passway setting is at one end stretched out the mouth of pipe and is inserted in the other end respective channel respectively.
Above-mentioned head cap center is a through hole.
The outer attached one deck soft plastics of above-mentioned handle, bond line between these soft plastics covering two joint entity handles and the bond line between handle and the head.
This utility model entity handle is provided with the structure of passage, make passage very firm, the pressure variation of current and air-flow can not influence the passage moral and be connected, and just produces vibration when having overcome prior art high pressure draught and flow instability, causes the defective that various tubules come off easily; Each passage is the bonding of pegging graft in the handle, connect just firmly, the outer attached one deck soft plastics of handle, comfortable during use, condition oneself to long hours of work, bond line between the soft plastics covering two joint entity handles and the bond line between handle and the head have hidden the evidence of corrosion of glue to handle, make mobile phone very attractive in appearance; This utility model overall structure, be fit to the mould design, such overall structure and material design, not only reduced cost on the whole, made 10 yuans of the cost less thaies of this product, just about 1 dollar, and should be fit to the Chinese industrial structure, be exactly the industrial structure that is fit to Chinese processing manufacturing industry, make this product have competitiveness in the world, can produce as exported product.
Description of drawings
Fig. 1 is this utility model sectional structure sketch map;
Fig. 2 be Fig. 1 along AAA to the sectional structure sketch map;
Fig. 3 is the logical air inlet sectional structure sketch map of fumarole;
Fig. 4 is two joint handle sectional structure sketch maps;
Fig. 5 be Fig. 4 along D to structural representation;
Fig. 6 be Fig. 4 along BB to the sectional structure sketch map;
Fig. 7 is three joint handle sectional structure sketch maps;
Fig. 8 is Fig. 7 segmentation sectional structure sketch map;
Fig. 9 is the outer attached soft plastics sectional structure sketch map of handle.
The specific embodiment
A kind of entity handle disposable high-speed dental turbine unit, constitute by head and handle, as Fig. 1,2 (Fig. 1, handle is three joints 21 in 2,22 and 23, in the present embodiment with 21,22 and 23 3 joints are considered as a joint 20 and get final product), head is by head shell 11, movement 12 in the head shell constitutes, head shell 11 and handle 20 are plastics, the head shell is bondd by head shell 11-1 and head cap 11-2, and (cap of head shown in 1 up among the figure, but be not limited to the top, the head cap also can below and side etc., it is fixing that bonding herein comprises that also clamping or alternate manner cover head), head cap center is a through hole 11-2-1, in the entity cervical region 11-3 of head shell, inlet channel 31 and the return gas channel 32 in the head shell 11 led in setting, inlet channel 31 and return gas channel 32 are horizontally sets, inlet channel 31 departs from Handle axis to blowing impeller in entering head shell 11 time, and the water spray passage 33 lead to the head bottom is set, water spray passage 33 places below inlet channel 31 and the return gas channel 32, the handle tail end is the fast patch plug of aqueous vapor, the entity cervical region 11-3 of head shell and entity handle 20 head ends bonding, it is exactly the bonding of pegging graft, inlet channel in the two, return gas channel, the corresponding connection of water spray passage, the inlet channel one end passway setting that is communicated with is each other stretched out mouth of pipe 31-1 and is inserted in the other end respective channel, and the setting of return gas channel one end passway is stretched out mouth of pipe 32-1 and is inserted in the other end respective channel, water spray passage one end passway also is provided with stretches out the mouth of pipe and is inserted in the other end respective channel.Attached one deck soft plastics 25 is as Fig. 9 outward for handle, and this soft plastics covers the bond line between handle and the head at least.Dental drill injects among the through hole 11-2-1 at connecting shaft impeller center, the fast patch plug of aqueous vapor is connected therapy apparatus promptly can use.If the handle moulding of present embodiment, mould are very complicated; But with the inlet channel in the handle, return gas channel and water spray passage are fixed in the mould with corresponding plastic tube, perfusion fluid resin (being exactly the raw material of fiberglass or artificial stone), solidify the back plastic tube and be bonded in the demoulding in the handle, can make handle, manufacturing in this way can be integrated head shell and handle, the entity cervical region 11-3 and the entity handle 20 head ends bonding that just do not need head shell, that is to say, the entity cervical region 11-3 of head shell and entity handle 20 head ends bonding comprises the connecting mode that head shell and handle are integrated, but yield poorly, the head shell is a moulding, and handle is that the curing part is more feasible.As additional embodiments, a kind of is that handle is divided into two joints, as Fig. 1,21 is a joint, and 22,23 liang of joints are considered as a joint, and handle just can have been made in injection moulding like this, another kind is that handle is divided into three joints, and 21,22,23 liang of joints respectively are a joint exactly, and this also is a kind of embodiment.
The foregoing description is provided with jet channel 34-1 as Fig. 3 in the head bottom, and the import 34-1-1 of jet channel 34-1 is communicated with the branch QI KOU 31-2 of inlet channel 31.
The foregoing description is provided with jet channel 34-1 as Fig. 4 in the head bottom, and jet channel 34-1 connection places water spray passage 33 following jet channels 34 along the fast patch plug of aqueous vapor that axially leads to the handle tail end in the handle.
The foregoing description, is vertical setting as spray water passage 33 and jet channel 34 of Fig. 4 in the entity cervical region 11-3 of head shell, prosthomere entity handle 21, water spray passage 33 and jet channel 34 change horizontally set such as Fig. 5 into by vertically being arranged in the handle to the fast patch plug of aqueous vapor of front end in deutomerite entity handle 24, water spray passage 33 and jet channel 34 interrupt in deutomerite entity handle 24 among Fig. 4, be because two passages change horizontally set in interruptions into by vertical setting, cutd open less than two passages; Described entity handle 24 is meant foregoing handle 22 and handle 23.
The foregoing description, as Fig. 6,7, wherein deutomerite entity handle 24 is made of two joints, promptly bonds the corresponding connection with jet channel of inlet channel, return gas channel, water spray passage in it between deutomerite leading portion entity handle 22 and deutomerite rear entity handle 23, two joints.
The foregoing description, water spray passage 33 and jet channel 34 can change horizontally set into by vertical setting in deutomerite leading portion entity handle 22, also can change horizontally set into by vertical setting in deutomerite rear entity handle 23, shown in Fig. 6,7,8 is to change horizontally set into by vertical setting in deutomerite rear entity handle 23.
The foregoing description, the outer attached one deck soft plastics of handle 24 is as Fig. 9, this soft plastics covers bond line between entity handle and the bond line between handle and the head, the bonding between the described entity handle comprise the entity handle be a joint, entity handle be two and the entity handle be any shapes of three joints.
Like this, drill bit is inserted in the through hole that injects connecting shaft impeller 12 centers, the two is an interference fit, the fast patch plug of the aqueous vapor of handle tail end is inserted dental multipurpose therapy unit, compressed air enters the head cavity through inlet channel 31, promotes the impeller quick rotation, and the cavity return-air flows out by return gas channel 32; Simultaneously, in the ejection of head bottom, high pressure gas sprays to the water column that the head bottom sprays by jet channel 34 to water under high pressure in the head bottom by water spray passage 33, with the water column atomizing, gets final product work; Behind the end-of-job, pull out the fast patch plug of aqueous vapor of handle tail end, drill bit is unloaded, abandon dental drill, finish a work process.
Claims (11)
1, a kind of entity handle disposable high-speed dental turbine unit, constitute by head and handle, head is by the head shell, movement in the head shell constitutes, it is characterized in that: head shell and handle are plastics, the head shell is by head shell and head cap bonding, in the entity cervical region of head shell, inlet channel and the return gas channel in the head shell led in setting, and the water spray passage lead to the head bottom is set, the handle tail end is the fast patch plug of aqueous vapor, the entity cervical region of head shell and entity handle head end bonding, inlet channel, return gas channel, the corresponding connection of water spray passage in the two.
2, a kind of entity handle disposable high-speed dental turbine unit as claimed in claim 1, it is characterized in that: handle is by two joint entity handle bondings, it is prosthomere entity handle and deutomerite entity handle bonding, prosthomere entity handle head end and head bonding, deutomerite entity handle tail end is the fast patch plug of aqueous vapor, the corresponding connection with the water spray passage of inlet channel, return gas channel in the entity cervical region of head shell and the two joint entity handles.
3, a kind of entity handle disposable high-speed dental turbine unit as claimed in claim 2, it is characterized in that: inlet channel and return gas channel are horizontally sets, the water spray passage places below inlet channel and the return gas channel.
4, a kind of entity handle disposable high-speed dental turbine unit as claimed in claim 3, it is characterized in that: the head bottom is provided with jet channel, and jet channel is communicated with inlet channel.
5, a kind of entity handle disposable high-speed dental turbine unit as claimed in claim 3, it is characterized in that: the head bottom is provided with jet channel, jet channel place the water spray passage below along the fast patch plug of aqueous vapor that axially leads to the handle tail end in the handle.
6, a kind of entity handle disposable high-speed dental turbine unit as claimed in claim 5, it is characterized in that: described water spray passage and jet channel are vertical settings in the entity cervical region of head shell, prosthomere entity handle, and water spray passage and jet channel change horizontally set into by vertically being arranged in the handle to the fast patch plug of aqueous vapor of front end in deutomerite entity handle.
7, a kind of entity handle disposable high-speed dental turbine unit as claimed in claim 5, it is characterized in that: described two joint entity handles, wherein deutomerite entity handle is made of two joints, be deutomerite leading portion entity handle and deutomerite rear entity handle, bonding between two joints, the corresponding connection of inlet channel, return gas channel, water spray passage in it with jet channel.
8, a kind of entity handle disposable high-speed dental turbine unit as claimed in claim 7, it is characterized in that: water spray passage and jet channel are vertical settings in deutomerite leading portion entity handle, and water spray passage and jet channel change horizontally set into by vertically being arranged in the handle to the fast patch plug of aqueous vapor of front end in deutomerite rear entity handle.
9, as the described a kind of entity handle disposable high-speed dental turbine unit of one of claim 1-8, it is characterized in that: described bonding, it is the bonding of pegging graft, the inlet channel of Lian Tonging, return gas channel, water spray passage and jet channel each other, at one end the passway is provided with and stretches out the mouth of pipe and be inserted in the other end respective channel respectively.
10, a kind of entity handle disposable high-speed dental turbine unit as claimed in claim 9, it is characterized in that: head cap center is a through hole.
11, a kind of entity handle disposable high-speed dental turbine unit as claimed in claim 10 is characterized in that: the outer attached one deck soft plastics of handle, bond line between these soft plastics covering two joint entity handles and the bond line between handle and the head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720090468 CN200973753Y (en) | 2007-05-25 | 2007-05-25 | Disposable high-speed turbine dental drill with an solid handle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720090468 CN200973753Y (en) | 2007-05-25 | 2007-05-25 | Disposable high-speed turbine dental drill with an solid handle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200973753Y true CN200973753Y (en) | 2007-11-14 |
Family
ID=38900047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200720090468 Expired - Fee Related CN200973753Y (en) | 2007-05-25 | 2007-05-25 | Disposable high-speed turbine dental drill with an solid handle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200973753Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101623213B (en) * | 2008-07-11 | 2011-08-17 | 李晓平 | Disposable high-speed turbine tooth-drilling hand-held machine |
| WO2011147228A1 (en) * | 2010-05-26 | 2011-12-01 | 郑州泽正技术服务有限公司 | Dental turbine drill |
| CN105167865A (en) * | 2015-09-07 | 2015-12-23 | 桂林市啄木鸟医疗器械有限公司 | Dental handpiece capable of reducing vibration |
| CN105919680A (en) * | 2016-06-23 | 2016-09-07 | 余伟平 | Quick connecting handle for dental handpiece |
| CN106073908A (en) * | 2016-06-23 | 2016-11-09 | 余伟平 | Disposable dental handpiece |
| US10064698B2 (en) | 2010-05-26 | 2018-09-04 | Zhengzhou Zezheng Technical Services Ltd. | Dental drill head |
| CN111938842A (en) * | 2020-08-13 | 2020-11-17 | 何勤 | Dental handpiece with suck-back prevention function |
| CN112754687A (en) * | 2020-12-30 | 2021-05-07 | 余礼建 | Rotatable dental handpiece |
-
2007
- 2007-05-25 CN CN 200720090468 patent/CN200973753Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101623213B (en) * | 2008-07-11 | 2011-08-17 | 李晓平 | Disposable high-speed turbine tooth-drilling hand-held machine |
| WO2011147228A1 (en) * | 2010-05-26 | 2011-12-01 | 郑州泽正技术服务有限公司 | Dental turbine drill |
| US10064698B2 (en) | 2010-05-26 | 2018-09-04 | Zhengzhou Zezheng Technical Services Ltd. | Dental drill head |
| CN105167865A (en) * | 2015-09-07 | 2015-12-23 | 桂林市啄木鸟医疗器械有限公司 | Dental handpiece capable of reducing vibration |
| CN105919680A (en) * | 2016-06-23 | 2016-09-07 | 余伟平 | Quick connecting handle for dental handpiece |
| CN106073908A (en) * | 2016-06-23 | 2016-11-09 | 余伟平 | Disposable dental handpiece |
| CN105919680B (en) * | 2016-06-23 | 2019-01-04 | 余伟平 | A kind of fast connecting handle of dental handpiece |
| CN106073908B (en) * | 2016-06-23 | 2019-03-19 | 余伟平 | Disposable dental handpiece |
| CN111938842A (en) * | 2020-08-13 | 2020-11-17 | 何勤 | Dental handpiece with suck-back prevention function |
| CN112754687A (en) * | 2020-12-30 | 2021-05-07 | 余礼建 | Rotatable dental handpiece |
| CN112754687B (en) * | 2020-12-30 | 2022-07-12 | 余礼建 | Rotatable dental handpiece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071114 Termination date: 20140525 |