JPH0698898A - Dental handpiece - Google Patents

Dental handpiece

Info

Publication number
JPH0698898A
JPH0698898A JP4275052A JP27505292A JPH0698898A JP H0698898 A JPH0698898 A JP H0698898A JP 4275052 A JP4275052 A JP 4275052A JP 27505292 A JP27505292 A JP 27505292A JP H0698898 A JPH0698898 A JP H0698898A
Authority
JP
Japan
Prior art keywords
circuit
handpiece
check valve
dental handpiece
contamination
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.)
Pending
Application number
JP4275052A
Other languages
Japanese (ja)
Inventor
Satoshi Kumachi
智 熊地
Shigeto Hatakeyama
成人 畠山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yoshida Dental Mfg Co Ltd
Original Assignee
Yoshida Dental Mfg Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yoshida Dental Mfg Co Ltd filed Critical Yoshida Dental Mfg Co Ltd
Priority to JP4275052A priority Critical patent/JPH0698898A/en
Publication of JPH0698898A publication Critical patent/JPH0698898A/en
Pending legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/02Dental 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
    • A61C1/05Dental 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
    • A61C1/057Dental 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

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

PURPOSE:To enable the prevention of contamination by a pathogen in a clinic and cross infection between a patient and an operator. CONSTITUTION:A handpiece 1 is provided internally with a drive air circuit 2, an exhaust circuit 3, a chip air circuit 4 and a water circuit 5. A check valve 7 whose tip is made up of an elastic member is mounted in the exhaust circuit 3 at a head part 6 of the handpiece 1. With such an arrangement, reversion is blocked to a hose mounted on a dental handpiece 1 and a dental treatment machine connected to the hose involved. Contamination from a pathogen or the like as caused by sucking action is checked within the dental handpiece even in the worst case and the dental handpiece is sterilized thereby enabling the prevention of contamination in the clinic and cross infection between a patient and an operator.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、ハンドピ−スの病原菌
や細菌がホ−スを通って歯科治療機械を汚染することを
防止し、患者・術者間の交叉感染を防ぐ歯科用ハンドピ
−スに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dental handpiece for preventing pathogenic bacteria and bacteria of the handpiece from contaminating a dental treatment machine through the hose and preventing cross infection between a patient and an operator. About Su

【0002】[0002]

【従来の技術】従来、ハンドピ−ス内にはロ−タを回転
させるためのドライブエア回路,バ−や歯牙を冷却する
水回路,エアで切削粉を吹き飛ばし且つ水を噴霧状にす
るためのチップエア回路およびドライブエアの排気回路
の4つの回路が内設されている。
2. Description of the Related Art Conventionally, in a handpiece, a drive air circuit for rotating a rotor, a water circuit for cooling a bar and teeth, a blown powder for blowing off cutting powder and atomizing water. Four circuits, a chip air circuit and a drive air exhaust circuit, are internally provided.

【0003】[0003]

【発明が解決しようとする課題】しかるに、前記従来技
術における4つの回路には吸引や逆流の処置は何ら取ら
れていない。従って、歯科用ハンドピ−スは、ドレイブ
エアの供給を停止した後のロ−タの惰性回転により、排
気回路或いはハンドピ−スヘッド部の隙間へ吸引作用が
生じ、患者口腔内の汚染物質を吸引してしまい、他の患
者や術者への交叉感染または診療室内汚染の危険性があ
った。
However, no suction or backflow treatment is taken in the four circuits of the prior art. Therefore, in the dental handpiece, due to the inertial rotation of the rotor after the supply of the drape air is stopped, the suction action is generated in the exhaust circuit or the gap between the handpiece head and sucks the contaminants in the patient's oral cavity. However, there was a risk of cross-infection to other patients or operators or contamination in the clinic.

【0004】因って、本発明は前記従来技術における欠
点に鑑みて開発されたもので、ハンドピ−ス内に設けら
れた各回路の内の少なくとも一つの回路にチェックバル
ブを設け、ドライブエアを供給停止した際に起こる吸引
や逆流を防止することのできる歯科用ハンドピ−スの提
供を目的とする。
Therefore, the present invention was developed in view of the above-mentioned drawbacks of the prior art, and a check valve is provided in at least one of the circuits provided in the handpiece to provide drive air. It is an object of the present invention to provide a dental handpiece capable of preventing suction and backflow that occur when the supply is stopped.

【0005】[0005]

【課題を解決するための手段】本発明は、軸受けにて支
持されたロ−タを圧縮空気により回転させて切削治療を
行うハンドピ−スにおいて、ドライブエア回路,排気回
路,チップエア回路および水回路の内の少なくとも一つ
の回路に一方向しか流れない構造のチェックバルブを設
けて構成したものである。
SUMMARY OF THE INVENTION The present invention provides a drive air circuit, an exhaust circuit, a chip air circuit, and a water circuit in a handpiece for rotating a rotor supported by a bearing by compressed air for cutting treatment. At least one of the circuits is provided with a check valve having a structure that allows flow only in one direction.

【0006】[0006]

【作用】本発明では、ハンドピ−ス内に設けられた各回
路の内の少なくとも一つの回路に一方向しか流れない構
造のチェックバルブを設けることにより、エアおよび水
源を停止した際に生じる汚染物質の吸引を阻止すること
ができる。
According to the present invention, at least one of the circuits provided in the handpiece is provided with a check valve having a structure that allows only one direction of flow, so that contaminants generated when the air and water sources are stopped. Can be prevented from being sucked.

【0007】[0007]

【実施例1】図1〜図4は本実施例を示し、図1はハン
ドピ−スの断面図、図2はハンドピ−ス先端の部分底面
図、図3および図4はチェックバルブの動作を示す説明
図である。
Embodiment 1 FIGS. 1 to 4 show this embodiment, FIG. 1 is a sectional view of a hand piece, FIG. 2 is a partial bottom view of the tip of the hand piece, and FIGS. 3 and 4 show the operation of a check valve. It is an explanatory view shown.

【0008】1はハンドピ−スで、このハンドピ−ス1
にはドライブエア回路2,排気回路3,チップエア回路
4および水回路5が内設されている。そして、ハンドピ
−ス1のヘッド部6における排気回路3にはその先端部
が弾性部材にて形成されたチェックバルブ7が取着され
ている。
1 is a hand piece, and this hand piece 1
A drive air circuit 2, an exhaust circuit 3, a chip air circuit 4 and a water circuit 5 are internally provided in. The exhaust circuit 3 in the head portion 6 of the handpiece 1 is fitted with a check valve 7 whose tip is formed of an elastic member.

【0009】以上の構成から成るハンドピ−ス1は、通
常時および加圧流体8の逆流時には排気回路3に取着さ
れたチェックバルブ7の開口部が閉じ、加圧流体の順流
時にはその流体圧力によりチェックバルブ7の開口部が
開く。
In the handpiece 1 having the above-described structure, the opening of the check valve 7 attached to the exhaust circuit 3 is closed at normal times and at the time of reverse flow of the pressurized fluid 8, and the fluid pressure at the time of forward flow of the pressurized fluid. This opens the opening of the check valve 7.

【0010】本実施例によれば、チェックバルブ7によ
り排気回路3からの汚染物質の逆流を阻止することがで
きる。
According to this embodiment, the check valve 7 can prevent the backflow of pollutants from the exhaust circuit 3.

【0011】[0011]

【実施例2】図5〜図9は本実施例を示し、図5はハン
ドピ−スの断面図、図6はハンドピ−ス先端の部分底面
図、図7および図8はチェックバルブの動作を示す説明
図、図9は変形例を示すハンドピ−スの断面図である。
Embodiment 2 FIGS. 5 to 9 show this embodiment, FIG. 5 is a sectional view of a hand piece, FIG. 6 is a partial bottom view of the tip of the hand piece, and FIGS. 7 and 8 show the operation of a check valve. FIG. 9 is a sectional view of a hand piece showing a modified example.

【0012】本実施例のハンドピ−ス11は、前記実施
例1におけるドライブエア回路2,チップエア回路4お
よび水回路5のそれぞれにチェックバルブ12、13,
14を設けて構成した点が異なり、他の構成は同一な構
成部分から成るもので、同一構成部分には同一番号を付
し、構成の説明を省略する。
The handpiece 11 of the present embodiment has check valves 12, 13, respectively for the drive air circuit 2, the chip air circuit 4 and the water circuit 5 of the first embodiment.
The structure is different from that of FIG. 14 except that the other structure is composed of the same constituent parts, and the same constituent parts are designated by the same reference numerals, and the description of the structure will be omitted.

【0013】以上の構成から成るハンドピ−ス11は、
通常時および加圧流体8の逆流時にはドライブエア回路
2,排気回路3,チップエア回路4および水回路5に取
着されている各チェックバルブ12,7,13,14の
開口部が閉じ、加圧流体の順流時にはその流体圧力によ
りチェックバルブ12,7,13,14の開口部が開
く。
The hand piece 11 having the above structure is
At normal times and when the pressurized fluid 8 flows backward, the openings of the check valves 12, 7, 13, 14 attached to the drive air circuit 2, the exhaust circuit 3, the chip air circuit 4 and the water circuit 5 are closed to pressurize. When the fluid flows forward, the fluid pressure causes the openings of the check valves 12, 7, 13, and 14 to open.

【0014】本実施例によれば、ドライブエア回路2,
排気回路3,チップエア回路4および水回路5の全てに
チェックバルブ12,7,13,14を設けたことによ
り、前記実施例1に比べてさらに汚染物質の吸引を阻止
することができる。
According to this embodiment, the drive air circuit 2,
By providing the check valves 12, 7, 13, and 14 in all of the exhaust circuit 3, the chip air circuit 4, and the water circuit 5, it is possible to further prevent suction of contaminants as compared with the first embodiment.

【0015】尚、本発明はドライブエア回路2,排気回
路3,チップエア回路4および水回路5へのチェックバ
ルブ12,7,13,14の取着位置を限定するもので
はなく、図9に示す様に、ハンドピ−ス11の中央部等
に取着しても良い。
The present invention does not limit the mounting positions of the check valves 12, 7, 13 and 14 to the drive air circuit 2, the exhaust circuit 3, the chip air circuit 4 and the water circuit 5, but is shown in FIG. Similarly, it may be attached to the central portion of the hand piece 11 or the like.

【0016】[0016]

【発明の効果】以上説明した様に、本発明に係る歯科用
ハンドピ−スによれば、ドライブエア回路,排気回路,
チップエア回路および水回路の内の少なくとも一つの回
路にチェックバルブを設けた事により、歯科用ハンドピ
−スに装着されたホ−スおよび該ホ−スを接続した歯科
治療機械への逆流が阻止され、吸引作用による病原体等
からの汚染を最悪でも歯科用ハンドピ−ス内で止めるこ
とができる。因って、歯科用ハンドピ−スを滅菌消毒す
ることにより、診療室内の汚染を防止できるとともに、
患者および術者の交叉感染を防止することができる。
As described above, according to the dental handpiece of the present invention, the drive air circuit, the exhaust circuit,
By providing a check valve in at least one of the tip air circuit and the water circuit, backflow to the hose attached to the dental handpiece and the dental treatment machine to which the hose is connected is prevented. In the worst case, contamination from a pathogen or the like due to the suction action can be stopped in the dental handpiece. Therefore, by sterilizing and disinfecting the dental handpiece, it is possible to prevent contamination in the medical office,
Cross-infection of patients and operators can be prevented.

【図面の簡単な説明】[Brief description of drawings]

【図1】実施例1を示すハンドピ−スの断面図である。FIG. 1 is a cross-sectional view of a hand piece showing a first embodiment.

【図2】実施例1を示すハンドピ−ス先端の部分底面図
である。
FIG. 2 is a partial bottom view of the handpiece tip according to the first embodiment.

【図3】実施例1を示すチェックバルブの動作の説明図
である。
FIG. 3 is an explanatory diagram of the operation of the check valve according to the first embodiment.

【図4】実施例1を示すチェックバルブの動作の説明図
である。
FIG. 4 is an explanatory diagram of the operation of the check valve according to the first embodiment.

【図5】実施例2を示すハンドピ−スの断面図である。FIG. 5 is a sectional view of a hand piece showing a second embodiment.

【図6】実施例2を示すハンドピ−ス先端の部分底面図
である。
FIG. 6 is a partial bottom view of the handpiece tip according to the second embodiment.

【図7】実施例2を示すチェックバルブの動作の説明図
である。
FIG. 7 is an explanatory diagram of the operation of the check valve according to the second embodiment.

【図8】実施例2を示すチェックバルブの動作の説明図
である。
FIG. 8 is an explanatory diagram of the operation of the check valve according to the second embodiment.

【図9】実施例2の変形例を示すハンドピ−スの断面図
である。
FIG. 9 is a sectional view of a hand piece showing a modification of the second embodiment.

【符号の説明】[Explanation of symbols]

1 ハンドピ−ス 2 ドライブエア回路 3 排気回路 4 チップエア回路。 5 水回路 6 ヘッド部 7 チェックバルブ 8 加圧流体 11 ハンドピ−ス 12 チェックバルブ 13 チェックバルブ 14 チェックバルブ 1 Handpiece 2 Drive air circuit 3 Exhaust circuit 4 Chip air circuit. 5 Water Circuit 6 Head 7 Check Valve 8 Pressurized Fluid 11 Hand Pace 12 Check Valve 13 Check Valve 14 Check Valve

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 軸受けにて支持されたロ−タを圧縮空気
により回転させて切削治療を行うハンドピ−スにおい
て、ドライブエア回路,排気回路,チップエア回路およ
び水回路の内の少なくとも一つの回路にチェックバルブ
を設けて構成したことを特徴とする歯科用ハンドピ−
ス。
1. In a handpiece for cutting treatment by rotating a rotor supported by a bearing with compressed air, at least one of a drive air circuit, an exhaust circuit, a chip air circuit and a water circuit is provided. A dental handpiece characterized by being provided with a check valve
Su.
JP4275052A 1992-09-18 1992-09-18 Dental handpiece Pending JPH0698898A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4275052A JPH0698898A (en) 1992-09-18 1992-09-18 Dental handpiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4275052A JPH0698898A (en) 1992-09-18 1992-09-18 Dental handpiece

Publications (1)

Publication Number Publication Date
JPH0698898A true JPH0698898A (en) 1994-04-12

Family

ID=17550180

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4275052A Pending JPH0698898A (en) 1992-09-18 1992-09-18 Dental handpiece

Country Status (1)

Country Link
JP (1) JPH0698898A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5464350A (en) * 1993-08-23 1995-11-07 Siemens Aktiengesellschaft Dental handpiece with a check valve
US5782634A (en) * 1995-08-11 1998-07-21 Kaltenbach & Voigt Gmbh & Co. Medical, in particular dental turbine handpiece
WO2013105762A1 (en) * 2012-01-12 2013-07-18 연세대학교 원주산학협력단 Handpiece
CN113349952A (en) * 2021-07-21 2021-09-07 佛山市丹特尔医疗器材有限公司 Anti-suck-back dental handpiece

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5464350A (en) * 1993-08-23 1995-11-07 Siemens Aktiengesellschaft Dental handpiece with a check valve
US5782634A (en) * 1995-08-11 1998-07-21 Kaltenbach & Voigt Gmbh & Co. Medical, in particular dental turbine handpiece
WO2013105762A1 (en) * 2012-01-12 2013-07-18 연세대학교 원주산학협력단 Handpiece
US9498243B2 (en) 2012-01-12 2016-11-22 Yonsei University Wonju Industry-Academic Cooperation Foundation Handpiece
CN113349952A (en) * 2021-07-21 2021-09-07 佛山市丹特尔医疗器材有限公司 Anti-suck-back dental handpiece

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