CN100339055C - Back suction prevention type dental drill handset - Google Patents
Back suction prevention type dental drill handset Download PDFInfo
- Publication number
- CN100339055C CN100339055C CNB2003101157670A CN200310115767A CN100339055C CN 100339055 C CN100339055 C CN 100339055C CN B2003101157670 A CNB2003101157670 A CN B2003101157670A CN 200310115767 A CN200310115767 A CN 200310115767A CN 100339055 C CN100339055 C CN 100339055C
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- China
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- air
- shell body
- dental drill
- drill bit
- drill
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
- A61C1/02—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools
- A61C1/05—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools with turbine drive
- A61C1/057—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools with turbine drive with means for preventing suction effect in turbine after deactivation of the drive air
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- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The present invention relates to a back suction prevention type dental drill hand piece which is composed of an outer casing, a rear bearing, a turbine rotor, a front bearing, a rotary shaft, a drill bit and a front casing. Through the combination of the members, high-pressure air can be led into the air inlet of the outer casing and an annular space between the bearing outer ring at the drill bit end and the outer casing from the high-pressure air outlet of the dental drill handle and is then guided to the air turbine to drive the drill bit to rotate. Through the air turbine, the air flows into an annular space between the rear bearing and the outer casing, is discharged from the air outlet, and flows back to the air back channel in the handle to prevent the back suction of any liquid or air of the drill bit end. Therefore, the present invention enhances the power efficiency of the air and the output of shaft work and reduces noises.
Description
Technical field
The invention relates to a kind of anti-resorption type dental drill, refer to a kind of high pressure endless belt that forms with pressure-air especially, dental drill end and the air backflow end design of being separated by is to reach the function that prevents resorption and lifting dental drill efficient, increases dental drill output and reduction noise.
Background technology
In dental treatment, because air turbine runs up, virus such as presumable hepatitis B, AIDS and antibacterial are drawn back in whole water systems of dental treatment in the patient oral cavity that can will receive treatment, pollute dental water, even if through the dental drill of strict sterilization, pathogenic bacterium and virus when water spray, also have been full of.Since the resorption of dental drill, the clinical dental water that is used in the patient oral cavity, and by various pathogenic microorganism and non-pathogenic microorganism severe contamination, in every milliliter of undressed dentistry water sample, bacterial content can reach tens thousand of.In dental treating chair inside, this bacterioid generally exists with biomembranous form, and on the surface and dental drill inner tubal wall of biomembrane subsides attached to the dentistry water system, a large amount of antibacterials is then concealed in these films, forms the environment of bacterial growth breeding.According to the foreign statistic data, biomembranous various bacteria total amounts can reach 1,000 ten thousand floras in every milliliter the dentistry water.Biomembrane at any time by water inwall come off and enter in the dental treatment water, when the patient is treated, through the dental drill ejection.Meanwhile, the contaminant water of dental drill ejection is removed and is directly entered in the patient oral cavity, also can form water smoke disperse medical treatment clinic, pollutes the clinic air, has also polluted the medical worker.Worryingly be, dental disorder what occur in the people is that inevitably almost 100% people may accept dental treatment in life.So dentistry has become the high-risk field of hospital's aleopation.
Taiwan hepatitis B bacillicarrier is crowd's about 10%, and the pollution of dental drill resorption makes problem more serious.Find by water sample check,, all detect a large amount of antibacterials at the outlet of water receiver and water channel to dental unit.Clinical research also confirms, and is positive to water sample detection B hepatovirus in the dentistry water channel of B hepatopath row treatment back with dental drill.In the patient of the daily prescription on individual diagnosis of dentistry, male patient is numerous for hepatitis virus B, so dental water is by the B hepatovirus, or even the phenomenon that HIV (human immunodeficiency virus) is polluted is worrying.
The fact of concealing viruses such as hepatitis B, AIDS and antibacterial in the dental drill is confirmed.The severe contamination of dental treatment water system, it not dental drill disinfectant local problem, the aleopation that produces has become the problem of direct harm common people health, but up to now, dental drill resorption phenomenon does not achieve a solution, and fails effectively to prevent the aleopation of pathogenic bacteria even if bore through a people one of strict sterilization yet.In view of this, the present invention designs a dental drill with anti-resorption, simultaneously, has also promoted dental drill usefulness, and has reduced its noise.
The dental drill of commonly using, it is made of dental drill handgrip and dental drill drill bit, and drill bit is to be made of support housing and the intravital dental drill rotor of shell.
Be illustrated in figure 6 as US PAT No.6, the exploded view of commonly using the dental drill rotor shown in 186784, main spare part has: two bearing a, an air turbine b, a rotating shaft c, a drill bit d, an oil sealing e, two packing ring f, a front shell cover g, a rear shell cover h etc.Wherein, bearing a is disposed at air turbine b two sides respectively, and c connects it with rotating shaft, and is fixed on the rotating shaft c, drill bit d is installed on the rotating shaft c, to constitute the dental drill rotor again.
As shown in Figure 7, the operation principle of this dental drill is: after pressure-air causes the h1 of import department of rear shell cover h by the pressure-air port of export in the handgrip, directly from radial impact air turbine b blade, changed by momentum, produce shaft work, rotate the dental drill rotor; Treat that air turbine b blade circles round to exit h2, import the air backflow road in the handgrip again, drain into atmosphere.Because turbine runs up, and import and export h1, h2 same circle at air turbine b, virus and antibacterials such as presumable hepatitis B, AIDS in the patient oral cavity that can will receive treatment, can be drawn back in whole water systems of dental treatment from exit h2 low pressure, pollute dental water, make dental drill in water spray, also be full of pathogenic bacterium and virus through strict sterilization.
In view of this inventor is to think hard funiculus, and active research is engaged in the experience that Related product is researched and developed for many years, and the present invention through constantly testing and improve, developing finally.
Summary of the invention
The object of the present invention is to provide a kind of anti-resorption type dental drill,, and reach the function that prevents resorption and promote dental drill efficient, increase dental drill output and reduction noise by the import and export orientation that changes air and the direction of pressure-air impinging air turbine.
The object of the present invention is achieved like this, and a kind of anti-resorption type dental drill comprises:
One shell body is set as the open end before it, which is provided with an air intlet and an air outlet slit;
One rear bearing is located at the shell body rear end;
One turbine rotor is made up of a wheel disk of turbine and a turbo blade, can be subjected to pressure-air to turn;
One fore bearing is located at the turbine rotor front end;
A jack is established in one rotating shaft on it, can be connected in series this turbine rotor and forward and backward bearing;
One drill bit is located at the jack of rotating shaft;
One procapsid is located at the open end of shell body, in above-mentioned each element is closed in, and outside allowing that drill bit convexedly stretches in.
Pressure-air is guide mode impulse turbine blade axially.
The outer shroud and the runner between shell body of this forward and backward bearing can be designed to scroll type.
Can put the air inlet guide vane before this air turbine rotor.
Can put the aerofluxus commutator segment behind this air turbine rotor.
Air inlet and aerofluxus commutator segment can be put in the front and back of this air turbine rotor.
Described shell body and procapsid can be made of dental drill drill bit housing.
The air intlet of shell body is positioned at the upper end of fore bearing.
The air outlet slit of shell body is positioned at the upper end of rear bearing.
The air intlet of shell body is introduced pressure-air to forming a high pressure annulus between fore bearing outer shroud and shell body.
The air outlet slit end of shell body is to forming a low pressure annulus between rear bearing outer shroud and shell.
The high pressure annulus can form estrangement with drill bit and air outlet slit, and any liquid and the gas that can block the drill bit end reclaim.
The air intlet of shell body and air outlet slit are arranged at the two ends of turbine rotor respectively.
Effect of the present invention is that (1) the present invention introduces the annulus of pressure-air between fore bearing and shell body.Because pressure-air is full of in this annulus, forms estrangement between drill bit end and exhaust end, can block any liquid or the gas resorption of drill bit end.(2) the present invention with axial guide mode with the direct impulse turbine rotor of the gases at high pressure in the above-mentioned annulus, to promote aerodynamic efficiency.(3) epitrochanterian all turbo blades of pressure-air while impulse turbine of the present invention so can significantly increase shaft work output.(4) because the output of good, the shaft work of aerodynamic quality promotes, and when identical shaft work demand condition, air capacity that the present invention needs or the more preceding case of running rotating speed reduce relatively, noise reduces naturally.
Description of drawings
Fig. 1 is the exploded view of dental drill rotor of the present invention.
Fig. 2 is the cutaway view of dental drill rotor of the present invention.
Fig. 3 is the enforcement illustration of the use air inlet guide vane of dental drill rotor of the present invention.
Fig. 4 is the enforcement illustration of the use aerofluxus commutator segment of dental drill rotor of the present invention.
Fig. 5 is that the use air inlet guide vane and the aerofluxus commutator segment of dental drill rotor of the present invention implemented illustration.
Fig. 6 is the exploded view of the dental drill commonly used.
Fig. 7 is a combination appearance figure of commonly using dental drill.
A...... bearing b...... air turbine c...... rotating shaft d...... drill bit
E...... oil sealing f...... packing ring g...... front shell cover
H...... rear shell cover h1...... import department h2...... exit
10...... shell body 11...... air intlet
12...... air outlet slit 20...... rotating shaft
21...... jack 30...... fore bearing
31...... rear bearing 32...... annulus
33...... annulus 40...... turbine rotor
41...... turbo blade 42...... wheel disk of turbine
50...... procapsid 51...... packing ring
52...... oil sealing 60...... drill bit
70...... air inlet guide vane 80...... aerofluxus commutator segment
The specific embodiment
As shown in Figure 1, anti-resorption type dental drill of the present invention comprises: a shell body 10, be to be that an end is opening port, the other end is the ladle bowl body of close mouth, on it and be provided with an air intlet 11 and an air outlet slit 12, wherein air intlet 11 is positioned at the upper end of fore bearing 30, and air outlet slit 12 is positioned at the upper end of rear bearing 31; And a rear bearing 31, be located at shell body 10 rear ends; And a turbine rotor 40, be on a wheel disk of turbine 42, to establish to have turbo blade 41, turned by pressure-air; And a fore bearing 30, be located at turbine rotor 40 front ends; And a rotating shaft 20, establish a jack 21 on it, can be connected in series this turbine rotor 40 and forward and backward bearing 30,31; Wherein air intlet 11 and air outlet slit 12 are located at two ends of turbine rotor 40 respectively, and a drill bit 60, are located at the jack 21 of rotating shaft 20; And a procapsid 50, in order to above-mentioned each element is covered in the shell body 10, and outside allowing that drill bit 60 convexedly stretches in, this housing and a built-in packing ring 51 and oil sealing 52 cover fore bearing 30 to enclose, so that itself and the external world can fully seal isolated.
As shown in Figure 2, operation principle of the present invention is: pressure-air is introduced into the annulus 32 of 10 of fore bearing 30 outer shrouds and shell bodies through the air intlet 11 of dental drill rotor case body 10 by the pressure-air exit of dental drill handgrip, forming a pressure-air is full of in this annulus 32, form estrangement at drill bit 60 and air outlet slit 12, can block any liquid of drill bit end or the antibacterial resorption in gas or the patient oral cavity, this pressure-air is axially importing turbine rotor 40 circlewise simultaneously, impact each turbo blade 41, to drive rotating shaft 20 and drill bit 60, axially drain into annulus 33 through the gas behind the turbine rotor 40 by 10 of rear bearing 31 and shell bodies, form a low pressure annulus, be back to air backflow road in the handgrip by the air outlet slit 12 of shell body 10 again, drain into atmosphere again.And air outlet slit 12, also is difficult for any liquid or the antibacterial in gas and the patient oral cavity of drill bit end are reclaimed at the other end of shell body 10 when drill bit 60 stops operating.
Shown in Fig. 3～5, for strengthening flow direction guiding and the usefulness of its pressure-air in the dental drill internal rotor, the present invention is the guide mode turbo blade 41 of impulse turbine rotor 40 directly axially, and the outer shroud of pro-, rear bearing 30,31 and the runner of shell body 10 more can be designed to scroll type, wherein can put an air inlet guide vane 70 (see figure 3)s before this turbine rotor 40; Or put an aerofluxus commutator segment 80 (see figure 4)s in turbine rotor 40 rears; Or air inlet guide vane 70 and aerofluxus commutator segment 80 (see figure 5)s are set simultaneously.
The setting of inner member of the present invention also can directly utilize the shell space of dental drill drill bit to be provided with to replace shell body 10 and front shell cover 50, and promptly described shell body 10 and procapsid 50 can be made of dental drill drill bit housing.
In sum, the present invention is as follows with function, means and the difference on effect of practising the user:
1. the present invention introduces the annulus of pressure-air between fore bearing and shell body. Because high pressure sky Gas is full of in this annulus, form estrangement between drill bit and exhaust end, can block drill bit Any liquid or gas resorption are practised the user and are not then had any estrangement measure, and the resorption phenomenon is serious.
The present invention with axial guide mode with the direct impulse turbine of the gases at high pressure in the above-mentioned annulus Rotor is to promote aerodynamic efficiency. Practise the user and directly guide pressure-air with radial manner The bump turbine rotor blade. So aerodynamic quality extreme difference.
3. pressure-air of the present invention epitrochanterian all turbo blades of impulse turbine simultaneously so can be big The width of cloth increases shaft work output. And the pressure-air of practising the user only clashes into its air turbine in the unit interval A slice blade, its shaft work output is certainly less than the present invention.
4. because aerodynamic quality is good, shaft work output promotes, when identical shaft work demand condition, originally The air capacity that invention needs or the more front case relative reduce of running rotating speed, noise reduces naturally.
Claims (7)
1, a kind of anti-resorption type dental drill is characterized in that comprising:
One shell body is set as the open end before it, which is provided with an air intlet and an air outlet slit;
One rear bearing is located at the shell body rear end;
One turbine rotor is made up of a wheel disk of turbine and a turbo blade, can be subjected to pressure-air to turn;
One fore bearing is located at the turbine rotor front end;
A jack is established in one rotating shaft on it, can be connected in series this turbine rotor and forward and backward bearing;
One drill bit is located at the jack of rotating shaft;
One procapsid is located at the open end of shell body, in above-mentioned each element is closed in, and outside allowing that drill bit convexedly stretches in;
The air intlet of described shell body and air outlet slit are arranged at the two ends of turbine rotor respectively; The air intlet of described shell body is positioned at the upper end of fore bearing, and the air outlet slit of described shell body is positioned at the upper end of rear bearing; The air intlet of shell body is introduced pressure-air to forming a high pressure annulus between fore bearing outer shroud and shell body, and the air outlet slit end of shell body is to forming a low pressure annulus between rear bearing outer shroud and shell; Described high pressure annulus can form estrangement with drill bit and air outlet slit, and any liquid and the gas that can block the drill bit end reclaim.
2, anti-resorption type dental drill as claimed in claim 1, it is characterized in that: pressure-air is guide mode impulse turbine blade axially.
3, anti-resorption type dental drill as claimed in claim 1, it is characterized in that: the outer shroud and the runner between shell body of this forward and backward bearing can be designed to scroll type.
4, anti-resorption type dental drill as claimed in claim 1 is characterized in that: can put the air inlet guide vane before this air turbine rotor.
5, anti-resorption type dental drill as claimed in claim 1 is characterized in that: can put the aerofluxus commutator segment behind this air turbine rotor.
6, anti-resorption type dental drill as claimed in claim 1, it is characterized in that: air inlet and aerofluxus commutator segment can be put in the front and back of this air turbine rotor.
7, anti-resorption type dental drill as claimed in claim 1, it is characterized in that: described shell body and procapsid can be made of dental drill drill bit housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101157670A CN100339055C (en) | 2003-11-28 | 2003-11-28 | Back suction prevention type dental drill handset |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101157670A CN100339055C (en) | 2003-11-28 | 2003-11-28 | Back suction prevention type dental drill handset |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1620996A CN1620996A (en) | 2005-06-01 |
| CN100339055C true CN100339055C (en) | 2007-09-26 |
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ID=34760548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101157670A Expired - Fee Related CN100339055C (en) | 2003-11-28 | 2003-11-28 | Back suction prevention type dental drill handset |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100339055C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140204513A1 (en) * | 2011-08-10 | 2014-07-24 | Innovantix Gmbh | Casing attachment for a mobile electronic device with liquid container and atomizing means |
| EP3659541B1 (en) * | 2018-11-27 | 2021-07-28 | Sirona Dental Systems GmbH | Reverse-flow brake for rotors in dental preparation instruments |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06142116A (en) * | 1992-10-30 | 1994-05-24 | Takara Nakajima Kk | Contamination preventing device for inside of hand piece |
| US5340312A (en) * | 1992-06-09 | 1994-08-23 | Masahiro Murase | Anti-contamination type elongated hand piece of a dental instrument |
| CN1198919A (en) * | 1997-05-13 | 1998-11-18 | 田洋四郎 | Internal pollution apparatus for handpieces |
| US6152736A (en) * | 1996-12-06 | 2000-11-28 | Schmidinger; Frank | Dental turbine |
| US6186784B1 (en) * | 1996-04-29 | 2001-02-13 | Young Dental Manufacturing Company | Autoclavable dental handpiece with disposable high speed turbine |
-
2003
- 2003-11-28 CN CNB2003101157670A patent/CN100339055C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5340312A (en) * | 1992-06-09 | 1994-08-23 | Masahiro Murase | Anti-contamination type elongated hand piece of a dental instrument |
| JPH06142116A (en) * | 1992-10-30 | 1994-05-24 | Takara Nakajima Kk | Contamination preventing device for inside of hand piece |
| US6186784B1 (en) * | 1996-04-29 | 2001-02-13 | Young Dental Manufacturing Company | Autoclavable dental handpiece with disposable high speed turbine |
| US6152736A (en) * | 1996-12-06 | 2000-11-28 | Schmidinger; Frank | Dental turbine |
| CN1198919A (en) * | 1997-05-13 | 1998-11-18 | 田洋四郎 | Internal pollution apparatus for handpieces |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1620996A (en) | 2005-06-01 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070926 Termination date: 20171128 |