JP2001293014A - Nozzle for injecting dental treatment agent - Google Patents
Nozzle for injecting dental treatment agentInfo
- Publication number
- JP2001293014A JP2001293014A JP2000111739A JP2000111739A JP2001293014A JP 2001293014 A JP2001293014 A JP 2001293014A JP 2000111739 A JP2000111739 A JP 2000111739A JP 2000111739 A JP2000111739 A JP 2000111739A JP 2001293014 A JP2001293014 A JP 2001293014A
- Authority
- JP
- Japan
- Prior art keywords
- mixture
- water
- nozzle
- ejection hole
- transfer path
- 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C3/00—Dental tools or instruments
- A61C3/02—Tooth drilling or cutting instruments; Instruments acting like a sandblast machine
- A61C3/025—Instruments acting like a sandblast machine, e.g. for cleaning, polishing or cutting teeth
Landscapes
- 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
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、空気と粉末の混合
物を水とともに歯牙に吹き付けることにより歯科治療を
行なう歯科用ハンドピースのためのノズルに関する。The present invention relates to a nozzle for a dental handpiece for performing dental treatment by spraying a mixture of air and powder together with water on teeth.
【０００２】[0002]
【従来の技術】歯を研磨または洗浄するための粉末を空
気と混合し、この空気と粉末の混合物を水とともに歯牙
に吹き付ける歯科用ハンドピースが知られている。この
ような歯科用ハンドピースとしては、例えば、粉末と空
気を混合して混合物を生成するための容器と、この混合
物を容器からノズルまで移送するための混合物移送路
と、混合物とともに歯牙に吹き付けるための水をノズル
まで移送するための水移送路とを備えたものがある。2. Description of the Related Art Dental handpieces are known in which powder for polishing or cleaning teeth is mixed with air, and the mixture of air and powder is sprayed on the teeth together with water. Such dental handpieces include, for example, a container for mixing powder and air to produce a mixture, a mixture transfer path for transferring the mixture from the container to the nozzle, and for spraying teeth with the mixture. And a water transfer path for transferring the water to the nozzle.
【０００３】また、かかる歯科用ハンドピースの先端に
は、図５（ａ）（ｂ）の断面図や端面図で示したような
ノズル４０を取り付けており、図５を参照してこの先端
部分について説明すると、外パイプ４１と内パイプ４３
とからなる二重管により水移送路４２と混合物移送路４
４を形成し、外パイプ４１の先端に先端部材４５を接続
して水移送路４２を絞り込み、先端に向けて縮径した内
パイプ４３の縮径部４３ａを先端部材４５の孔から突出
してノズル４０を形成している。そして、孔４２ａから
は水を、また孔４４ａからは粉末と空気の混合物をそれ
ぞれ同時に歯牙に吹き付けることにより、歯を研磨また
は洗浄したり、あるいは虫歯の予防治療を行なってい
る。[0005] Further, a nozzle 40 as shown in the sectional view and the end view of FIGS. 5 (a) and 5 (b) is attached to the distal end of such a dental handpiece. The outer pipe 41 and the inner pipe 43 will be described.
The water transfer path 42 and the mixture transfer path 4
4 is formed, a tip member 45 is connected to the tip of the outer pipe 41, the water transfer path 42 is narrowed, and the reduced diameter portion 43a of the inner pipe 43, which is reduced in diameter toward the tip, is projected from the hole of the tip member 45 to form a nozzle. 40 are formed. By simultaneously spraying water from the holes 42a and a mixture of powder and air from the holes 44a, respectively, the teeth are polished or washed, or the dental caries are prevented or treated.
【０００４】[0004]
【発明が解決しようとする課題】この種の歯科治療にお
いて、歯牙の状態によっては、混合物や水を歯の隙間な
どの特定部分に集中的に吹付けることが求められる。こ
の要求に応えるため、従来のノズル４０において、先端
の孔を極めて小径に絞り込むことも可能であるが、この
場合には、粉末が詰まり易くなるという新たな問題を生
じる。In this type of dental treatment, depending on the condition of the teeth, it is required to intensively spray the mixture or water to a specific portion such as a tooth gap. In order to meet this demand, it is possible to narrow the hole at the tip of the conventional nozzle 40 to an extremely small diameter. However, in this case, a new problem that the powder is easily clogged arises.
【０００５】したがって、本発明の課題は、粉末などの
噴出物を歯牙の特定部分に集中的に吹付けることが可能
で且つ閉塞を生じ難い歯科ハンドピース用ノズルを提供
することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a nozzle for a dental handpiece, which is capable of intensively spraying an ejected substance such as powder onto a specific part of a tooth and hardly causing blockage.
【０００６】[0006]
【課題を解決するための手段】本発明によれば、粉末と
空気の混合物をノズルまで移送するための混合物移送路
と、水をノズルまで移送するための水移送路とを備え、
前記混合物を前記水とともに歯牙に吹き付けることによ
り歯科治療を行なう歯科用ハンドピースのノズルであっ
て、該ノズルは、前記水移送路と前記混合物移送路に対
して回転可能に設けられ、前記混合物と前記水とのため
にそれぞれ通路と噴出孔とを各別に備え、前記噴出孔は
混合物を扁平に噴出するように形成されてなることを特
徴とするノズルが提供される。According to the present invention, there is provided a mixture transfer path for transferring a mixture of powder and air to a nozzle, and a water transfer path for transferring water to a nozzle.
A nozzle of a dental handpiece for performing a dental treatment by spraying the mixture on the teeth together with the water, the nozzle being rotatably provided with respect to the water transfer path and the mixture transfer path, A nozzle is provided, wherein a passage and an ejection hole are separately provided for the water, and the ejection hole is formed so as to eject the mixture flatly.
【０００７】本発明において、前記水の噴出孔は、前記
混合物の噴出孔を囲むように設けることが好ましい。In the present invention, it is preferable that the water ejection hole is provided so as to surround the mixture ejection hole.
【０００８】[0008]
【発明の実施の形態】以下、本発明の好適な実施の形態
を添付図面に基づいて説明するが、本発明はこれに限定
されるものではない。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings, but the present invention is not limited thereto.
【０００９】図１は本発明に係るノズル１０の断面図で
あり、このノズル１０は、炭酸水素ナトリウムなどの粉
末と空気の混合物を水とともに歯牙に吹き付けることに
より歯科治療を行なう歯科用ハンドピースのノズルであ
って、図１の歯科用ハンドピースは、内パイプ２２と外
パイプ２４とからなる二重管２０により形成された水移
送路２３と混合物移送路２１を備え、一方、ノズル１０
は、二重管２０の先端において回転可能に設けられ、混
合物のための通路および噴出孔２１ｂと、水のための通
路および噴出孔３１とをそれぞれ各別に有し、混合物の
噴出孔２１ｂは混合物を扁平に噴出するように形成され
ている。FIG. 1 is a cross-sectional view of a nozzle 10 according to the present invention. The nozzle 10 is a dental handpiece for performing dental treatment by spraying a mixture of powder such as sodium bicarbonate and air with water on teeth. 1 is provided with a water transfer path 23 and a mixture transfer path 21 formed by a double pipe 20 composed of an inner pipe 22 and an outer pipe 24, while the nozzle 10
Is provided rotatably at the tip of the double pipe 20, has a passage and an ejection hole 21b for the mixture, and a passage and an ejection hole 31 for water, respectively, and the ejection hole 21b for the mixture is Is formed so as to be ejected flat.
【００１０】更に詳細に説明すると、前記ノズル１０
は、外パイプ２４の先端に固定された固定部材１６と、
この固定部材１６に対して摺動可能かつ回転可能に当接
して配置した後端部材１１と、内パイプ２２の先端に摺
動可能かつ回転可能に当接して配置した先端部材１３
と、これら後端部材１１と先端部材１３とを回転可能な
状態で一体に連結する外周部材１２と、この外周部材１
２と固定部材１６との間から水が漏れないようにパッキ
ングとして設けたＯリング１５と、内パイプ２２と先端
部材１３との間から水が漏れないようにパッキングとし
て設けたＯリング１４とから成る。More specifically, the nozzle 10
A fixing member 16 fixed to the tip of the outer pipe 24,
A rear end member 11 slidably and rotatably abutting against the fixing member 16 and a front end member 13 slidably and rotatably abutting against the tip of the inner pipe 22.
An outer peripheral member 12 for integrally connecting the rear end member 11 and the distal end member 13 in a rotatable state;
An O-ring 15 provided as a packing so that water does not leak from between the second member 2 and the fixing member 16, and an O-ring 14 provided as a packing so that water does not leak from between the inner pipe 22 and the tip member 13. Become.
【００１１】ここで、図３は図１におけるIII−III線に
沿った断面図であり、前記先端部材１３の周面軸方向に
は、図１と図３に示したように切欠き溝１３ａを設け、
この切欠き溝１３ａにより外周部材１２との間に水の通
路を構成する。また先端部材１３は、前端面１３ａを扁
平な小判形状に形成し、縮径部２１ａに向けて内径を絞
り込み、この縮径部２１ａから前端面１３ａの内周に向
けて内径を拡大して扁平な小判形状の噴出孔２１ｂを形
成し、さらに、外周部材１２先端の内面との間に水の通
路としての隙間１８を備えるように形成する。FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 1. In the axial direction of the peripheral surface of the tip member 13, as shown in FIGS. Is established,
A water passage is formed between the cutout groove 13a and the outer peripheral member 12. Further, the front end member 13 has a front end face 13a formed in a flat oval shape, narrows the inner diameter toward the reduced diameter portion 21a, and expands the inner diameter from the reduced diameter portion 21a toward the inner periphery of the front end face 13a to obtain a flat shape. A small oval-shaped ejection hole 21b is formed, and a gap 18 as a water passage is formed between the ejection hole 21b and the inner surface of the distal end of the outer peripheral member 12.
【００１２】また、前記外周部材１２は前端面１２ａ
を、先端部材１３の噴出孔２１ｂを囲むように円形に形
成し、先端部材１３の外周面との隙間を水の噴出孔３１
と為し、これにより、水の噴出孔３１は、混合物の噴出
孔２０ｂの両側に縦長な部分が、また上下に隙間が狭い
部分が形成される。The outer peripheral member 12 has a front end face 12a.
Is formed in a circular shape so as to surround the ejection hole 21 b of the tip member 13, and a gap with the outer peripheral surface of the tip member 13 is formed in the water ejection hole 31.
As a result, the water ejection holes 31 have vertically long portions on both sides of the mixture ejection holes 20b, and narrow portions vertically.
【００１３】さらに、図４は図１におけるIV−IV線に沿
った断面図であり、前記固定部材１６の前端面には、図
１と図４に示したように、切欠き溝１６ａを上下に設け
る。これにより、二重管２０の水移送路２３は、切欠き
溝１６ａを通り隙間１７に連通し、さらに、切欠き溝１
３ａから隙間１８を介して噴出孔３１まで連通する。FIG. 4 is a sectional view taken along the line IV-IV in FIG. 1. In the front end face of the fixing member 16, as shown in FIGS. To be provided. Thereby, the water transfer path 23 of the double pipe 20 communicates with the gap 17 through the notch groove 16a, and further, the notch groove 1
3a communicates with the ejection hole 31 through the gap 18.
【００１４】次に、ノズル１０の作用について説明す
る。粉末と空気の混合物は混合物移送路２１を通って先
端部材１３の縮径部２１ａに至り、ここから更に拡径面
を流れて噴出孔２１ｂから扁平な状態で吹き出される。
一方、水は水移送路２３を通って流れ、固定部材１６の
内側から切欠き溝１６ａを介して隙間１７に至り、ここ
から更に切欠き溝１３ａを通って隙間１８を介して噴出
孔３１から扁平な状態で吹き出される。噴出孔２１ｂか
ら吹き出された混合物と、噴出孔３１から吹き出された
水とは、扁平な状態で吹き飛びながら混合するか、ある
いは歯牙に吹き付けられたときに混合して、歯の隙間な
どの特定部分に集中的に吹き付けられて歯科治療は効率
よく為される。Next, the operation of the nozzle 10 will be described. The mixture of the powder and the air reaches the reduced diameter portion 21a of the distal end member 13 through the mixture transfer passage 21, from which the mixture flows further on the enlarged diameter surface and is blown out from the ejection hole 21b in a flat state.
On the other hand, water flows through the water transfer path 23, reaches the gap 17 from the inside of the fixing member 16 through the notch groove 16a, and further passes through the notch groove 13a from the ejection hole 31 through the gap 18. It is blown out in a flat state. The mixture blown out from the blowout hole 21b and the water blown out from the blowout hole 31 are mixed while being blown off in a flat state, or mixed when sprayed on a tooth, and are mixed with a specific portion such as a tooth gap. Dental treatment is performed efficiently with intensive spraying.
【００１５】[0015]
【発明の効果】本発明に係るノズルは、水移送路と混合
物移送路を形成した管の先端に回転可能に設け、混合物
と水のために各別に形成した通路と噴出孔とを備え、混
合物の噴出孔は混合物を扁平に噴出するような形状に形
成したので、ノズルを回転させて混合物の扁平に噴出す
る角度を適宜調節すれば、粉末などの噴出物を歯牙の所
望部分、特に、歯の隙間などに集中的に吹付けることが
可能になった。しかも、混合物が扁平に噴出するように
形成した噴出孔は、従来のように極めて小径に絞り込む
必要も無く、したがって、粉末が詰まることによる閉塞
を生じ難いという利点もある。The nozzle according to the present invention is provided rotatably at the tip of a pipe having a water transfer passage and a mixture transfer passage, and has a passage formed separately for the mixture and the water, and an ejection hole. The ejection hole of the mixture was formed in such a shape as to eject the mixture flat, so that if the nozzle is rotated and the angle at which the mixture is ejected flat is adjusted appropriately, the ejection material such as powder can be ejected to a desired portion of the tooth, in particular, the tooth. It is now possible to spray intensively in the gaps of Moreover, the ejection hole formed so that the mixture is ejected flatly does not need to be narrowed down to an extremely small diameter unlike the conventional art, and therefore has the advantage that clogging due to clogging of the powder is unlikely to occur.
【００１６】また本発明に係るノズルでは、混合物が扁
平に噴出するように形成した噴出孔のまわりに水の噴出
孔を形成したので、この水の噴出孔の外形を、例えば、
従来のように円形に形成しても、混合物の噴出孔との隙
間、すなわち、水の噴出孔は扁平な形状に形成すること
ができる。したがって、水の噴出孔の製造は比較的容易
に行うことができる。Further, in the nozzle according to the present invention, since the water ejection hole is formed around the ejection hole formed so that the mixture is ejected flat, the outer shape of the water ejection hole may be, for example,
Even when the mixture is formed in a circular shape as in the related art, the gap between the mixture and the discharge hole, that is, the water discharge hole can be formed in a flat shape. Therefore, the production of the water ejection hole can be performed relatively easily.
【図１】本発明に係るノズルの断面図である。FIG. 1 is a sectional view of a nozzle according to the present invention.
【図２】図１のノズルの端面図である。FIG. 2 is an end view of the nozzle of FIG. 1;
【図３】図１におけるIII−III線に沿った断面図であ
る。FIG. 3 is a sectional view taken along line III-III in FIG.
【図４】図１におけるIV−IV線に沿った断面図である。FIG. 4 is a sectional view taken along the line IV-IV in FIG.
【図５】（ａ）は従来のノズルの断面図であり、（ｂ）
はその端面図である。FIG. 5A is a cross-sectional view of a conventional nozzle, and FIG.
Is an end view thereof.
１０ ノズル ２１ 混合物移送路 ２１ｂ 混合物の噴出孔 ２３ 水移送路 ３１ 水の噴出孔 DESCRIPTION OF SYMBOLS 10 Nozzle 21 Mixture transfer path 21b Mixture ejection hole 23 Water transfer path 31 Water ejection hole
Claims (2)
るための混合物移送路と、水をノズルまで移送するため
の水移送路とを備え、前記混合物を前記水とともに歯牙
に吹き付けることにより歯科治療を行なう歯科用ハンド
ピースのノズルであって、 該ノズルは、前記水移送路と前記混合物移送路に対して
回転可能に設けられ、前記混合物と前記水とのためにそ
れぞれ通路と噴出孔とを各別に備え、前記混合物の噴出
孔は混合物を扁平に噴出するように形成されてなること
を特徴とするノズル。1. A dental treatment apparatus comprising: a mixture transfer path for transferring a mixture of powder and air to a nozzle; and a water transfer path for transferring water to a nozzle, and spraying the mixture together with the water on teeth. A nozzle of a dental handpiece that performs rotation of the water transfer path and the mixture transfer path, and has a passage and an ejection hole for the mixture and the water, respectively. A nozzle provided for each of the nozzles, wherein the mixture ejection port is formed so as to eject the mixture flat.
を囲むように設けたことを特徴とする請求項１記載のノ
ズル。2. The nozzle according to claim 1, wherein the water ejection hole is provided so as to surround the mixture ejection hole.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000111739A JP3541162B2 (en) | 2000-04-13 | 2000-04-13 | Nozzle for injecting dental treatment |
| US09/829,970 US6390816B2 (en) | 2000-04-13 | 2001-04-11 | Dental handpiece for injecting therapeutic agent containing powders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000111739A JP3541162B2 (en) | 2000-04-13 | 2000-04-13 | Nozzle for injecting dental treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001293014A true JP2001293014A (en) | 2001-10-23 |
| JP3541162B2 JP3541162B2 (en) | 2004-07-07 |
Family
ID=18624017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000111739A Expired - Lifetime JP3541162B2 (en) | 2000-04-13 | 2000-04-13 | Nozzle for injecting dental treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3541162B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014136846A1 (en) * | 2013-03-07 | 2014-09-12 | 株式会社ナカニシ | Dental handpiece having nozzle connection structure |
| JP2015039405A (en) * | 2013-08-20 | 2015-03-02 | 学校法人 日本歯科大学 | Washing equipment for mucous membrane and washing system for mucous membrane |
| JP2021500106A (en) * | 2017-10-23 | 2021-01-07 | コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． | Cleaning device using liquid sheet cleaning operation |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4653055B2 (en) * | 2006-10-10 | 2011-03-16 | 株式会社松風 | Nozzle for powder injection device for dental treatment |
-
2000
- 2000-04-13 JP JP2000111739A patent/JP3541162B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014136846A1 (en) * | 2013-03-07 | 2014-09-12 | 株式会社ナカニシ | Dental handpiece having nozzle connection structure |
| JP2015039405A (en) * | 2013-08-20 | 2015-03-02 | 学校法人 日本歯科大学 | Washing equipment for mucous membrane and washing system for mucous membrane |
| JP2021500106A (en) * | 2017-10-23 | 2021-01-07 | コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． | Cleaning device using liquid sheet cleaning operation |
| JP7301045B2 (en) | 2017-10-23 | 2023-06-30 | コーニンクレッカ フィリップス エヌ ヴェ | Cleaning device with liquid sheet cleaning action |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3541162B2 (en) | 2004-07-07 |
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