CN2444568Y - Safety dental engine handpiece - Google Patents
Safety dental engine handpiece Download PDFInfo
- Publication number
- CN2444568Y CN2444568Y CN 00249194 CN00249194U CN2444568Y CN 2444568 Y CN2444568 Y CN 2444568Y CN 00249194 CN00249194 CN 00249194 CN 00249194 U CN00249194 U CN 00249194U CN 2444568 Y CN2444568 Y CN 2444568Y
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- CN
- China
- Prior art keywords
- dental engine
- engine handpiece
- worm
- handle
- dental
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a handle of a dental engine head section and the head of the dental engine head section which are connected into a whole. The interior of the handle of the dental engine head section is respectively provided with a water inlet pipe, an air jet pipe and a return air pipe, one end thereof is respectively communicated with a water source and a water vapor transmission pipe connected with an air pump, and the other end is respectively communicated with the head of the dental engine head section. The interior of a casing of the head of the dental engine head section is provided with a rotary mechanism and machine needles connected with the rotary mechanism. The utility model is characterized in that the rotary mechanism comprises a worm wheel and a worm-wheel shaft which are integrally formed, the middle of the worm-wheel shaft is provided with a hollow cavity passes through, and the utility model also provides the machine needles. The utility model also comprises a machine needle safety lock structure and a suck-back preventing device. The utility model has the advantages of convenient installation, lower production cost and firm machine needle installation. In addition, when shut down, the utility model can prevents the pollution from sucking a patient's saliva, blood, etc.
Description
This utility model relates to a kind of dentistry boring or cutting mechanics dental engine handpiece, relates in particular to a kind of safety dental engine handpiece.
High speed pneumatic dental drill (being commonly called as turbine hand machine) is a medical apparatus and instruments indispensable in the dental treatment, its operation principle is to provide pressure air by air pump, behind oil sprayer or water mist device, in sending into the head of turbine hand machine, pipeline blows turbine, and turbine drives car pin (being drill bit) rotation.Water smoke vapour sprays in the patient oral cavity from head front end water jet by the sparge pipe in the handle, plays flushing and cooling effect.
The promotion method and apparatus of United States Patent (USP) 4506677 dental handpieces, United States Patent (USP) 4318695 Dental gimlets for example, these two kinds of dental handpieces can only simply wash after use, regularly carry out high temperature steaming, be difficult to thorough disinfection, and the oral cavity is the important channel of cross infection, will bring pathogenic bacteria and other residues in patient's mouth into as not thorough disinfection, make the digestive tract of pathogenic bacteria by the patient, respiratory tract and blood are propagated this disease.
The technology of making high speed pneumatic dental drill (turbine hand machine) at present is roughly as follows: at first with copper material forging molding, process headstock and handle then, will spray water again, air jet pipe and head welding, electroplate, the polishing back connects worm-wheel shaft with handle with glue and spiral shell lamp, and wormwheel blade and worm gear set are through car, mill, after the grinding, wormwheel blade is installed on the worm-wheel shaft, mixes two bearings and be loaded in the worm gear set.Put into head, screw blind nut, so production efficiency is low, complex process, cost height.
The purpose of this utility model provides a kind of rational in infrastructure, and manufacturing process is simple, low price, and can avoid the mutual infection in oral cavity, prevent as the hepatitis bacterium high speed pneumatic dental drill safety dental engine handpiece of the propagation of a pathogenic bacteria such as AIDS.
The purpose of this utility model is to realize like this, the safety dental engine handpiece, comprise the dental engine handpiece handle and the dental engine handpiece head that are connected as a single entity, be respectively equipped with inlet channel and jet pipe in the dental engine handpiece handle, one end is communicated with the aqueous vapor conveyance conduit that is connected the water source and is connected air pump respectively, and the other end connects with the dental engine handpiece head respectively; Be provided with rotating mechanism in the housing of dental engine handpiece head, and the car pin that is connected with rotating mechanism; Be characterized in: inlet channel, jet pipe and return-air duct in the described dental engine handpiece handle are by constituting at preformed each the tubular groove of the inner walls of this handle; Described rotating mechanism comprises integrally formed worm gear and worm-wheel shaft, provides cavity in the middle of the worm-wheel shaft, and the car pin is set; Also comprise a car pin safe locking structure and an anti-suck-back device; Described car pin safety locking mechanism is made of the diminishing cavity mouth of interior diameter that the bottom at the middle cavity that provides of worm-wheel shaft forms; Described anti-suck-back device is serially connected between dental engine handpiece handle and the aqueous vapor conveyance conduit, comprises that a housing and that is connected with the dental engine handpiece handle is located at the check valve that is located in this housing on the water inlet segment and constitutes.
Above-mentioned safety dental engine handpiece, wherein: also comprise the pair of bearings that is located on the bearings circle in the housing of described dental engine handpiece head, its dead eye respectively with the socket of worm-wheel shaft two ends.
Above-mentioned safety dental engine handpiece, wherein: the check valve of described anti-suck-back device is located at the valve pocket on the dental engine handpiece water inlet segment by one and the valve body and the back-moving spring that are arranged in the valve pocket are formed; Described valve pocket is provided with paddle hole, is connected with the turnover water end (W.E.) of water inlet segment respectively; Described valve body is taper; Described back-moving spring contacts with valve body.
Because this utility model has adopted above structure, has following advantage:
1. intravital each pipeline of handle case is shaped in advance, is connected as a single entity with handle housing, makes assembling simple, and good seal performance;
2. worm gear, worm-wheel shaft are made of one, by mold injection molding, make simple installation, production cost reduces;
3. adopt, the car pin is installed firmly, avoid coming off;
4. interior dress is prevented suck-back device, sucks sewage such as patient's saliva, blood in the time of preventing to shut down, and causes pollution of waterhead.
Concrete structure of the present utility model is further provided by following embodiment and accompanying drawing thereof.
Fig. 1 is an overall structure decomposing schematic representation of the present utility model;
Fig. 2 is an overall structure assembling sketch map of the present utility model;
Fig. 3 is the A part cutaway view Amplified image of Fig. 1;
Fig. 4 is an anti-suck-back device structural representation of the present utility model;
Fig. 5 is the sketch map of anti-suck-back device water flowing state of the present utility model.
See also Fig. 1, Fig. 2.This utility model safety dental engine handpiece comprises the dental engine handpiece handle 1 and the dental engine handpiece head 2 that are connected as a single entity, is respectively equipped with inlet channel 11, jet pipe 12 and return-air duct (not shown) in the dental engine handpiece handle.Each pipeline adopts the method that is shaped in advance in the housing of handle to constitute, is connected as a single entity with inner walls, therefore, good seal performance.This inlet channel, jet pipe and return-air duct one end are communicated with the aqueous vapor conveyance conduit that is connected the water source and is connected air pump respectively, and the other end connects with the dental engine handpiece head respectively.Be provided with rotating mechanism 22 in the housing of dental engine handpiece head 2, and the car pin 3 that is connected with rotating mechanism.
Dental engine handpiece handle housing and dental engine handpiece head shell adopt the high-temperature resistance plastice single injection-molded, can realize 135 ℃ of high temperature, autoclave sterilization.
See also Fig. 3.Described rotating mechanism comprises worm gear 221 and worm-wheel shaft 222, and this worm gear 221 and worm-wheel shaft 222 are connected as a single entity, and the central authorities of worm-wheel shaft 222 are provided with cavity, are used to be provided with car pin 3.The car pin adopts the safe locking structure with being connected of worm-wheel shaft 22, this car pin safety locking mechanism is made of the diminishing conical cavity mouth 4 of diameter that the bottom at the middle cavity that provides of worm-wheel shaft forms, the car pin penetrates into the cavity of turbine wheel shaft from the dental engine handpiece top, reach outside the dental engine handpiece housing by cavity again, because the cavity mouth is diminishing cone-shaped, so the car pin can be clamped by certain requirement length, and then the dental engine handpiece case top be sealed, the car pin is installed firmly with bolt.
Also comprise the pair of bearings bracing ring that is connected with the dental engine handpiece housing 5 in the housing of dental engine handpiece head 2 and be located at pair of bearings 6 on the bearings circle 5, this to the dead eye of bearing respectively with the socket of worm-wheel shaft two ends, make the head rotation more steady fast.The rotating speed of this head is not less than 300,000 rev/mins.
See also Fig. 4, for preventing cross infection and pollution, this utility model also comprises an anti-suck-back device 7, should be serially connected between dental engine handpiece handle 1 and the aqueous vapor conveyance conduit by anti-suck-back device, comprise that the check valve 72 that a housing 71 and that is connected with the dental engine handpiece handle is located on the intravital water inlet segment of this shell constitutes.Check valve 72 that should anti-suck-back device by one be located at the valve pocket 721 on dental engine handpiece water inlet pipe 11 pipeline sections, a valve body 722 and a back-moving spring 723 that is arranged in the valve pocket formed; Valve pocket is provided with paddle hole (figure do not show), respectively with being connected into and out of water end (W.E.) 111,112 of water inlet segment; Described valve body 722 is taper; Described back-moving spring 723 contacts with valve body 722.
During dental engine handpiece work, press the play button on the lower handle, the water source is connected by water inlet pipe jet to the dental engine handpiece head by air jet pipe to dental engine handpiece head water spray, air pump work, the pressure of this aqueous vapor promotes valve body and moves backward, the turnover water end (W.E.) 111,112 of paddle hole on the valve pocket and water inlet segment is connected, as shown in Figure 5, aqueous vapor arrives dental engine handpiece inside by water inlet pipe, the rotation of promotion turbine, because turbine and turbine wheel shaft connect together, and turbine wheel shaft is to connect the car pin, therefore promotes car pin fast rotational.When quitting work; air pump cuts out; no external force imposes on valve body; valve body is got back to initial position under the effect of back-moving spring 73; valve body is blocked valve pocket inlet opening (as shown in Figure 4), cuts off the path of water inlet pipe, makes the sewage in the patient's mouth can resorption; thereby protected the water source, avoided the mutual infection between the patient.
This utility model is simple in structure, easy to use, reliable, safety, and rotary speed is fast, and long service life is practical.
Claims (3)
1. safety dental engine handpiece, comprise the dental engine handpiece handle and the dental engine handpiece head that are connected as a single entity, be respectively equipped with inlet channel, jet pipe and return-air duct in the dental engine handpiece handle, the one end is communicated with the aqueous vapor conveyance conduit that is connected the water source and is connected air pump respectively, and the other end connects with the dental engine handpiece head respectively; Be provided with rotating mechanism in the housing of dental engine handpiece head, and the car pin that is connected with rotating mechanism; It is characterized in that: inlet channel, jet pipe and return-air duct in the described dental engine handpiece handle are by constituting at preformed each the tubular groove of the inner walls of this handle; Described rotating mechanism comprises integrally formed worm gear and worm-wheel shaft, provides cavity in the middle of the worm-wheel shaft, and the car pin is set; Also comprise a car pin safe locking structure and an anti-suck-back device; Described car pin safety locking mechanism is made of the diminishing cavity mouth of interior diameter that the bottom at the middle cavity that provides of worm-wheel shaft forms; Described anti-suck-back device is serially connected between dental engine handpiece handle and the aqueous vapor conveyance conduit, comprises that a housing and that is connected with the dental engine handpiece handle is located at the check valve that is located in this housing on the water inlet segment and constitutes.
2. safety dental engine handpiece according to claim 1 is characterized in that: also comprise the pair of bearings that is located on the bearings circle in the housing of described dental engine handpiece head, its dead eye respectively with the socket of worm-wheel shaft two ends.
3. safety dental engine handpiece according to claim 1 is characterized in that: the check valve of described anti-suck-back device is located at the valve pocket on the dental engine handpiece water inlet segment by one and the valve body and the back-moving spring that are arranged in the valve pocket are formed; Described valve pocket is provided with paddle hole, is connected with the turnover water end (W.E.) of water inlet segment respectively; Described valve body is taper; Described back-moving spring contacts with valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00249194 CN2444568Y (en) | 2000-09-12 | 2000-09-12 | Safety dental engine handpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00249194 CN2444568Y (en) | 2000-09-12 | 2000-09-12 | Safety dental engine handpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2444568Y true CN2444568Y (en) | 2001-08-29 |
Family
ID=33607674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00249194 Expired - Fee Related CN2444568Y (en) | 2000-09-12 | 2000-09-12 | Safety dental engine handpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2444568Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101166482B (en) * | 2005-05-25 | 2011-04-13 | 斯恩蒂斯有限公司 | Device for controlled operation of a surgical or dental drive unit |
| CN102198017A (en) * | 2011-05-24 | 2011-09-28 | 河南工程学院 | Novel anti-back-suction device for high-speed turbine handpiece |
-
2000
- 2000-09-12 CN CN 00249194 patent/CN2444568Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101166482B (en) * | 2005-05-25 | 2011-04-13 | 斯恩蒂斯有限公司 | Device for controlled operation of a surgical or dental drive unit |
| US8256460B2 (en) | 2005-05-25 | 2012-09-04 | Synthes Usa, Llc | Device for controlled operation of a surgical or dental drive unit |
| CN102198017A (en) * | 2011-05-24 | 2011-09-28 | 河南工程学院 | Novel anti-back-suction device for high-speed turbine handpiece |
| CN102198017B (en) * | 2011-05-24 | 2012-10-31 | 河南工程学院 | Novel anti-back-suction device for high-speed turbine handpiece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |