US20060286505A1 - Dental handpiece with pressure regulating mechanism - Google Patents
Dental handpiece with pressure regulating mechanism Download PDFInfo
- Publication number
- US20060286505A1 US20060286505A1 US11/450,432 US45043206A US2006286505A1 US 20060286505 A1 US20060286505 A1 US 20060286505A1 US 45043206 A US45043206 A US 45043206A US 2006286505 A1 US2006286505 A1 US 2006286505A1
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- United States
- Prior art keywords
- air supply
- tubular
- compressed air
- air
- pressure regulating
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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
- A61C1/08—Machine parts specially adapted for dentistry
-
- 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
- A61C1/0007—Control devices or systems
- A61C1/0038—Pneumatic systems
-
- 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
- A61C1/0061—Air and water supply systems; Valves specially adapted therefor
- A61C1/0069—Fluid temperature control
-
- 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
- A61C1/052—Ducts for supplying driving or cooling fluid, e.g. air, water
-
- 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
- A61C1/08—Machine parts specially adapted for dentistry
- A61C1/12—Angle hand-pieces
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
- A61C17/022—Air-blowing devices, e.g. with means for heating the 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)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Safety Valves (AREA)
Abstract
The present dental handpiece has a burr sleeve, a head section, an air supply passage for introducing compressed air into the head section for driving the burr sleeve, and an air discharge passage for discharging the compressed air. The air supply passage includes a through hole axially extending through the rear terminal part of the handpiece, and a tubular pressure regulating member and an air supply tube connected in series between the through hole and the head section. The pressure regulating member has an aperture for allowing communication with the air discharge passage, and an annular valve body arranged axially slidably for opening/closing the aperture. When the pressure of compressed air passing through the air supply passage exceeds a predetermined level, the valve body is slid to open the aperture to discharge the compressed air for regulating the pressure of the compressed air to be supplied to the burr sleeve.
Description
- The present invention relates to a dental handpiece, in particular to a dental handpiece wherein the pressure of compressed air passing through an air supply passage is down-regulated when the pressure exceeds a predetermined level.
- Dental handpieces that are rotatably driven by compressed air are conventionally known, such as those having an air turbine or an air motor. An example of such a conventional dental handpiece is shown in
FIG. 5 . -
FIG. 5 is a sectional view ofhead section 40 of an air-turbine dental handpiece. This dental handpiece includesburr sleeve 42 for receiving and detachably holdingdental treatment tool 41 therein,rotor 43 provided on theburr sleeve 42 for rotatably driving theburr sleeve 42 with compressed air, and upper andlower ball bearings 44 provided above and below therotor 43 for rotatably supporting theburr sleeve 42. These parts are all accommodated incartridge case 45, which is in turn housed inhead housing 46.Head housing jacket 47 supporting thehead housing 46 contains thereinair supply passage 48 a for supplying compressed air to therotor 43 andair discharge passage 48 b for discharging the compressed air supplied to therotor 43. - The air-turbine dental handpiece discussed above has drawbacks in that, if the handpiece is operated at an air pressure that exceeds the acceptable level predetermined for each handpiece, the revolution speed of the turbine becomes too high, and the dental treatment tool may be damaged. Further, the lubricant may run out prematurely to cause wearing of the bearings, which disadvantageously reduces their service life.
- In order to avoid these drawbacks, a dental unit which supplies compressed air to the handpiece is given functions to regulate the pressure of the compressed air to be supplied to the handpiece, so as to keep the air pressure in the air supply passage in the handpiece within the predetermined range. However, the pressure of the compressed air needs to be adjusted properly for each kind of dental handpiece, and such pressure adjustment requires complex operations. Thus the user may tend to use the same air pressure for different kinds of handpieces, and as a result, the above problems will occur.
- In order to solve the above problems, the assignee of the present application has proposed in JP-2003-019144-A a dental handpiece having a pressure reducing member. This dental handpiece has a pressure reducing member arranged in the handpiece body section, or in the coupling (connector section) to be connected to the rear end of the handpiece body section.
FIG. 6 illustratesdental handpiece 50 as the former embodiment. - The
dental handpiece 50 includesgrip section 51 andhead section 52 provided at the distal end of thegrip section 51. Thehead section 52 houses and rotatably supports a burr sleeve (not shown) for receivingdental treatment tool 53 therein. Thegrip section 51 accommodatesair supply tube 54,air discharge passage 55, andwater supply line 56, andpressure reducing member 60 is disposed in the intermediate part of theair supply tube 54. A flexible tube (not shown) extending from a dental unit for supplying compressed air is connected to the rear end of thegrip section 51, so that the compressed air is supplied through theair supply tube 54 to thehead section 52 to rotatably drive thedental treatment tool 53. - In the
dental handpiece 50 discussed above, when the pressure of the compressed air supplied from the dental unit exceeds the acceptable level, the air pressure is automatically regulated by discharging the compressed air out of theair supply tube 54 through thepressure reducing member 60 into theair discharge passage 55. - The
dental handpiece 50 disclosed in JP-2003-019144-A is advantageous in that the air pressure is automatically regulated. However, since thepressure reducing member 60 is disposed projecting in the intermediate part of theair supply tube 54, thegrip section 51 inevitably becomes thicker, which poses problems in grippability. - In addition to the embodiment shown in
FIG. 6 , JP-2003-019144-A also discloses a dental handpiece having the pressure reducing member provided in the coupling. However, for providing the pressure reducing member in the coupling, relatively complex material processing is required during the production process, and thus further improvement is required. - Besides the handpieces disclosed in JP-2003-019144-A, there are other conventional dental handpieces that have a pressure reducing section integrally incorporated in the rear terminal part of the dental handpiece body. However, the above problems, such as the difficulties in making the grip section compact, and relative complexity in production process, still remain in these dental handpieces.
- The present invention aims to solve the above problems in view of the drawbacks in the prior art. It is an object of the present invention to provide a dental handpiece which is capable of automatically regulating the pressure of the compressed air supplied from a dental unit, when it exceeds an acceptable level, to prevent the revolution speed of the dental treatment tool from becoming too high; which requires less complexity in material processing in its production process; and which is easy for medical practitioners to grip.
- In order to solve the above problems, according to the present invention, there is provided a dental handpiece comprising:
- a burr sleeve for receiving a dental treatment tool therein,
- a head section housing and rotatably supporting said burr sleeve therein,
- an air supply passage for introducing compressed air into the head section for rotatably driving the burr sleeve with the compressed air, and
- an air discharge passage for discharging the compressed air,
- wherein said air supply passage comprises:
- a through hole axially extending through a rear terminal part of the dental handpiece, and
- a tubular pressure regulating member and an air supply tube connected in series between the distal end of the through hole and the head section,
- said tubular pressure regulating member having an aperture in its intermediate part for allowing communication with the air discharge passage, and anannular valve body arranged axially slidably for selectively opening and closing said aperture,
- wherein, when a pressure of compressed air passing through the air supply passage exceeds a predetermined level, said annular valve body is slid to open the aperture, whereby the compressed air is discharged through the aperture into the air discharge passage for regulating the pressure of the compressed air to be supplied to the burr sleeve.
- According to the dental handpiece of the present invention, since pressure regulation of the compressed air to be supplied to the head section is performed by means of a tubular pressure regulating member, and this tubular pressure regulating member is formed as a separate part from the rear terminal part of the dental handpiece, neither the coupling (connecting section) or the rear terminal part of the dental handpiece has to undergo complex material processing, which is required in conventional dental handpieces, and thus the production cost may be reduced.
- In addition, the tubular pressure regulating member is connected in series with the rear terminal part and with the air supply tube to form itself a part of the air supply passage through the dental handpiece. Its tubular form allows compact arrangement of this member in the dental handpiece. Further, the tubular pressure regulating member has an outlet aperture for the compressed air in the intermediate part of its tubular body, and the valve body for opening/closing the outlet aperture is formed in an annular shape and arranged coaxially in the tubular body. Thus the tubular pressure regulating member may be made thin, and thus the grip section of the dental handpiece may be made relatively thin.
- In a preferred embodiment of the dental handpiece according to the present invention, the tubular pressure regulating member further comprises:
- a first tubular member,
- a second tubular member inserted in said first tubular member to form a gap therebetween, and
- a spring for biasing said annular valve body,
- wherein said aperture of the tubular pressure regulating member is provided in each of said first and second tubular members at a predetermined position for allowing communication between the interior of the tubular pressure regulating member and the air discharge passage,
- wherein the annular valve body and the spring are arranged in the gap between said first and second tubular members,
- wherein said annular valve body is biased by the spring into a position to prevent communication between the apertures in the first and second tubular members, and is arranged to receive pressure from the compressed air passing through the air supply passage,
- wherein, when the pressure of the compressed air passing through the air supply passage exceeds a predetermined level, the annular valve body is slid by the pressure against the force of the spring to provide communication between the apertures.
- Since the dental handpiece according to the present invention is provided with a tubular pressure regulating member, the pressure of the compressed air received from a dental unit may automatically be adjusted properly when it exceeds the acceptable level, so that the revolution speed of the dental treatment tool will not become too high. Further, since the tubular pressure regulating member is connected in series with the rear terminal part and with the air supply tube, the overall dental handpiece may be made compact for allowing easy gripping by medical practitioners.
-
FIG. 1 is a side view, partially in section, of the dental handpiece according to the present invention. - FIGS. 2(a) and 2(b) are sectional views of the tubular pressure regulating member used in the present invention.
- FIGS. 3(a) to 3(c) schematically illustrate the series arrangement of the rear terminal part, the pressure regulating member, and the air supply tube in the handpiece body.
-
FIG. 4 is a side view showing the pressure regulating member ofFIG. 2 applied to a dental handpiece of a type different from that ofFIG. 1 . -
FIG. 5 is a sectional view of the head section of a conventional dental handpiece. -
FIG. 6 is a sectional view, partially in section, of a conventional dental handpiece having a pressure regulating mechanism. - The present invention will now be explained in more detail with reference to preferred embodiments taken in conjunction with the attached drawings, which are illustrative only and do not intend to limit the present invention.
-
FIG. 1 showsdental handpiece 10 according to the present invention in a side view, partially in section. - The
dental handpiece 10 of the present invention includesgrip section 11 havingcasing 11 a. At the distal end of thegrip section 11 is providedhead section 12, which houses and rotatably supports a burr sleeve (not shown) for receivingdental treatment tool 13 therein. In the proximal end of thegrip section 11 is formed rearterminal part 14 for detachably connecting to a coupling (not shown) as a connector section. Thegrip section 11 also hasair supply tube 15 therein, andpressure regulating member 20 is connected between theair supply tube 15 and the rearterminal part 14. The coupling (not shown) to be connected to the rearterminal part 14 is in turn connected to a dental unit (not shown) via a flexible tube (not shown) extending from the rear end of the coupling to the dental unit, so that compressed air is supplied from the dental unit through the rearterminal part 14 to thehead section 12 to rotatably drive the burr sleeve. - The rear
terminal part 14 is fixed in thecasing 11 a of thegrip section 11 by means of fixingmember 16. The rearterminal part 14 hasair inlet 14 a in the form of a through hole for allowing passage of the compressed air supplied through the coupling, andair outlet 14 b andair outlet groove 14 c for discharging the compressed air into the coupling. Thecasing 11 a has hollow 11 b inside, which functions as an air discharge passage for guiding the air discharged from thehead section 12 back through theair outlet 14 b and theair outlet groove 14 c. - The
pressure regulating member 20 is connected to theair inlet 14a at itsproximal end 21, and to theair supply tube 15 at itsdistal end 22, so that thepressure regulating member 20 is connected in series with the distal end of the rearterminal part 14 and with theair supply tube 15 along a generally common axis. Compressed air taken in through the rearterminal part 14 passes through thepressure regulating member 20 in the direction of arrow A, and then through theair supply tube 15 to thehead section 12. - Referring to FIGS. 2(a) and 2(b), the
pressure regulating member 20 includes firsttubular member 23, secondtubular member 24 inserted partially into the firsttubular member 23 to formgap 25 there between, andanannular valve element 26 slidably disposed in thegap 25. Thevalve element 26 is biased in the direction of arrow B by means ofspring 27 also disposed in thegap 25. The first and secondtubular members apertures apertures annular valve element 26 is in the position as shown inFIG. 2 (a) under the biasing force of thespring 27, theapertures annular valve element 26 is in the position as shown inFIG. 2 (b), theapertures gap 25 and are thus opened.Air vent aperture 23 b is provided through the firsttubular member 23 for opening thegap 25 to allow sliding motion of theannular valve element 26. The secondtubular member 24 hasflange 24 b protruding near theaperture 24 a. Theannular valve element 26 biased by thespring 27 engages with thisflange 24 b and is stopped at the position shown inFIG. 2 (a). When theannular valve element 26 is in the position as shown inFIG. 2 (a), therear surface 26 a of theannular valve element 26 receives the pressure from the compressed air through theaperture 24 a and thegap 25. - As discussed above, since the
pressure regulating member 20 is formed as a separate member from the rearterminal part 14 of the dental handpiece body, the rearterminal part 14 does not have to undergo complex material processing as in the conventional handpiece. This may contribute to reduction in production costs. Since thepressure regulating member 20 is in a tubular form, and is connected in series with the rearterminal part 14 and with theair supply tube 15 to form itself a part of the air supply passage through the dental handpiece, thepressure regulating member 20 may be accommodated in the dental handpiece in a compact manner. Further, thepressure regulating member 20 may be formed by inserting the secondtubular member 24 into the firsttubular member 23 and arranging theannular valve element 26 in thegap 25 between the first and secondtubular members apertures annular valve element 26 in thegap 25. Thus thepressure regulating member 20 may be formed with a reduced thickness, which allows to relatively reduce the thickness of thegrip section 11 of the dental handpiece. - Incidentally, the rear
terminal part 14, thepressure regulating member 20, and theair supply tube 15 may be connected in series in a manner different from the embodiment shown inFIG. 1 . - That is, in the
dental handpiece 10 illustrated inFIG. 1 , as shown schematically inFIG. 3 (a), thepressure regulating member 20 is connected at one end thereof directly to the rearterminal part 14, and at the other end thereof, with thehead section 12 by theair supply tube 15, to form the series arrangement. Alternatively, as shown inFIG. 3 (b), thepressure regulating member 20 may be connected at one end thereof with the rearterminal part 14 by theair supply tube 15, and at the other end thereof with thehead section 12 by theair supply tube 15, or as shown inFIG. 3 (c), thepressure regulating member 20 may be connected at one end thereof with the rearterminal part 14 by theair supply tube 15, and at the other end thereof directly to thehead section 12. - Next, the function of the
dental handpiece 10 is explained with reference toFIGS. 1 and 2 . - The compressed air fed from the dental unit is received via the coupling through the
air inlet 14 a of the rearterminal part 14, passed through thepressure regulating member 20 and theair supply tube 15, and supplied to thehead section 12 to rotatably drive the burr sleeve (not shown) having thedental treatment tool 13 received therein. On the other hand, the compressed air discharged from thehead section 12 is passed through the hollow 11 b of thedental handpiece 10, through theair outlet 14 b andair outlet groove 14 c, and is discharged outside via the coupling or the like. - Here, when the pressure of the compressed air through the
air inlet 14 a, thepressure regulating member 20, and theair supply tube 15 is within the tolerance level, theannular valve element 26 biased by thespring 27 engages with theflange 24 b to stay at the position shown inFIG. 2 (a ), whereby all the compressed air is allowed to pass through thepressure regulating member 20. - On the other hand, when the pressure of the compressed air through the
air inlet 14 a, thepressure regulating member 20, and theair supply tube 15 exceeds the tolerance level, that is, when the compressed air entering through theaperture 24 a of the secondtubular member 24 and thegap 25 applies pressure on therear surface 26 a of theannular valve element 26 that exceeds the biasing force of thespring 27, theannular valve element 26 is slid to the direction of arrow C. This causes theaperture 24 a of the secondtubular member 24 to communicate with theaperture 23 a of the firsttubular member 23 via thegap 25, i.e., theapertures FIG. 2 (b), to allow the compressed air to be discharged out of thepressure regulating member 20 into the hollow 11 b as shown by arrows A′. In this way, when the pressure of the compressed air exceeds the predetermined level, thepressure regulating member 20 discharges the compressed air into the hollow 11 b, so that the pressure of the compressed air in theair supply tube 15 downstream of thepressure regulating member 20 is maintained constantly within the predetermined range. This allows automatic regulation of the revolution speed of thedental treatment tool 13 within the predetermined level. - Another embodiment is explained with reference to
FIG. 4 .FIG. 4 is a side view, partially in section, ofdental handpiece 30, wherein thepressure regulating member 20 ofFIG. 2 is applied to a dental handpiece of a different type. Thedental handpiece 30 includesgrip section 31 andhead section 32 provided at the distal end of thegrip section 31. Thehead section 32 houses and rotatably supports a burr sleeve (not shown) for receivingdental treatment tool 33 therein. Thegrip section 31 accommodatesair supply tube 34,air discharge passage 35, andwater supply line 36, with theair supply tube 34 and thewater supply line 36 extending beyond the rear end of thedental handpiece 30.Air discharge tube 37 is attached to the rear end of thedental handpiece 30. Thepressure regulating member 20 is disposed in the intermediate part of theair supply tube 34, and a flexible tube (not shown) extending from an apparatus such as a dental unit (not shown) for supplying compressed air is connected to the rear end of thegrip section 31, so that the compressed air is supplied through theair supply tube 34 to thehead section 32 to rotatably drive thedental treatment tool 33. - Incidentally, the
pressure regulating member 20 ofFIG. 2 is slightly modified for adapting to the embodiment ofFIG. 4 in that its proximal and distal ends 21 a and 22 a are formed to be connectable to theair supply tube 34 ofFIG. 4 , while the other structure and function of themember 20 remain the same in both embodiments. - Although the present invention has been described with reference to the preferred embodiment, it should be understood that various modifications and variations can be easily made by those skilled in the art without departing from the spirit of the invention. Accordingly, the foregoing disclosure should be interpreted as illustrative only and is not to be interpreted in a limiting sense. The present invention is limited only by the scope of the following claims.
Claims (5)
1. A dental handpiece comprising:
a burr sleeve for receiving a dental treatment tool therein,
a head section housing and rotatably supporting said burr sleeve therein,
an air supply passage for introducing compressed air into the head section for rotatably driving the burr sleeve with the compressed air, and
an air discharge passage for discharging the compressed air,
wherein said air supply passage comprises:
a through hole axially extending through a rear terminal part of the dental handpiece, and
a tubular pressure regulating member and an air supply tube connected in series between the distal end of the through hole and the head section,
said tubular pressure regulating member having an aperture in its intermediate part for allowing communication with the air discharge passage, and an annular valve body arranged axially slidably for selectively opening and closing said aperture,
wherein, when a pressure of compressed air passing through the air supply passage exceeds a predetermined level, said annular valve body is slid to open the aperture, whereby the compressed air is discharged through the aperture into the air discharge passage for regulating the pressure of the compressed air to be supplied to the burr sleeve.
2. The dental handpiece according to claim 1 , wherein said tubular pressure regulating member further comprises:
a first tubular member,
a second tubular member inserted in said first tubular member to form a gap therebetween, and
a spring for biasing said annular valve body,
wherein said aperture of the tubular pressure regulating member is provided in each of said first and second tubular members at a predetermined position for allowing communication between the interior of the tubular pressure regulating member and the air discharge passage,
wherein the annular valve body and the spring are arranged in the gap between said first and second tubular members,
wherein said annular valve body is biased by the spring into a position to prevent communication between the apertures in the first and second tubular members, and is arranged to receive pressure from the compressed air passing through the air supply passage,
wherein, when the pressure of the compressed air passing through the air supply passage exceeds a predetermined level, the annular valve body is slid by the pressure against the force of the spring to provide communication between the apertures.
3. The dental handpiece according to claim 1 , wherein the tubular pressure regulating member is connected at one end thereof directly to the through hole, and at the other end thereof with the head section by the air supply tube.
4. The dental handpiece according to claim 1 , wherein the tubular pressure regulating member is connected at one end thereof with the through hole by the air supply tube, and at the other end thereof with the head section by the air supply tube.
5. The dental handpiece according to claim 1 , wherein the tubular pressure regulating member is connected at one end thereof with the rear terminal part by the air supply tube, and at the other end thereof directly to the head section.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/774,036 US8231385B2 (en) | 2005-06-16 | 2010-05-05 | Dental handpiece with pressure regulating mechanism |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-176549 | 2005-06-16 | ||
JP2005176549A JP4147231B2 (en) | 2005-06-16 | 2005-06-16 | Dental handpiece with pressure regulating mechanism |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/774,036 Continuation US8231385B2 (en) | 2005-06-16 | 2010-05-05 | Dental handpiece with pressure regulating mechanism |
Publications (1)
Publication Number | Publication Date |
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US20060286505A1 true US20060286505A1 (en) | 2006-12-21 |
Family
ID=37003363
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/450,432 Abandoned US20060286505A1 (en) | 2005-06-16 | 2006-06-12 | Dental handpiece with pressure regulating mechanism |
US12/774,036 Active US8231385B2 (en) | 2005-06-16 | 2010-05-05 | Dental handpiece with pressure regulating mechanism |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/774,036 Active US8231385B2 (en) | 2005-06-16 | 2010-05-05 | Dental handpiece with pressure regulating mechanism |
Country Status (9)
Country | Link |
---|---|
US (2) | US20060286505A1 (en) |
EP (1) | EP1733694B1 (en) |
JP (1) | JP4147231B2 (en) |
KR (1) | KR101167208B1 (en) |
CN (1) | CN1879575B (en) |
AT (1) | ATE442097T1 (en) |
BR (1) | BRPI0602204B8 (en) |
DE (1) | DE602006009014D1 (en) |
TW (1) | TWI373326B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140343589A1 (en) * | 2012-01-12 | 2014-11-20 | Yonsei University Wonju Industry-Academic Cooperation Foundation | Handpiece |
US11241298B2 (en) * | 2016-11-29 | 2022-02-08 | Guilin Woodpecker Medical Instrument Co., Ltd. | Overload protection device and high-speed dental handpiece comprising same |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR200458969Y1 (en) * | 2009-04-14 | 2012-03-22 | (주)세신정밀 | Burr fixed handpiece chuck structure |
DE102009031383A1 (en) * | 2009-07-01 | 2011-01-05 | Kaltenbach & Voigt Gmbh | Method and system for operating a medical, in particular dental handpiece |
FR2993168B1 (en) | 2012-07-16 | 2014-08-22 | Satelec Soc | ULTRASONIC SURGICAL MICROMOTOR |
EP3494920A3 (en) * | 2012-10-25 | 2019-07-03 | W & H Dentalwerk Bürmoos GmbH | Method for controlling and/or regulating a medical drive device operated with pressurized gas and such a drive device |
KR101955327B1 (en) * | 2018-01-17 | 2019-06-24 | 주식회사 덴탈로이드 | Pneumatic dental handpiece |
KR102128387B1 (en) | 2018-12-26 | 2020-07-08 | (주)세신정밀 | Handpiece exclusively using air turbine |
JP1641370S (en) * | 2019-03-01 | 2019-09-17 | ||
KR20210061790A (en) | 2019-11-20 | 2021-05-28 | 김병환 | Pneumatic dental handpiece |
KR102232638B1 (en) | 2020-10-30 | 2021-03-26 | 김두희 | Dental handpiece |
JP7258993B1 (en) | 2021-12-03 | 2023-04-17 | 株式会社ナカニシ | dental handpiece |
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US4257484A (en) * | 1980-03-10 | 1981-03-24 | Whitley Oran D | Pressure differential circulating valve |
US4744752A (en) * | 1984-07-30 | 1988-05-17 | Kabushiki Kaisha Morita Seisakusho | Dental handpiece control device |
US4791950A (en) * | 1987-01-21 | 1988-12-20 | Danfoss A/S | Pressure limiting valve |
US4944349A (en) * | 1989-02-27 | 1990-07-31 | Von Gonten Jr William D | Combination downhole tubing circulating valve and fluid unloader and method |
US5372197A (en) * | 1993-05-27 | 1994-12-13 | Gcw Development | Tubing unloader apparatus and method |
US6065966A (en) * | 1997-11-21 | 2000-05-23 | Kaltenbach & Voigt Gmbh & Co. | Medical or dental treatment instrument for the treatment of body tissue or a substitute material, in particular by cutting, and tool for such a treatment instrument |
US6827096B1 (en) * | 2003-06-23 | 2004-12-07 | Pacific Industrial Co., Ltd. | Relief valve |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3585458B2 (en) * | 2001-07-10 | 2004-11-04 | 株式会社ナカニシ | Dental handpiece with decompression mechanism |
JP4125993B2 (en) * | 2003-05-30 | 2008-07-30 | 株式会社モリタ製作所 | Air-driven dental handpiece and power adjustment adapter |
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2005
- 2005-06-16 JP JP2005176549A patent/JP4147231B2/en active Active
-
2006
- 2006-06-07 DE DE602006009014T patent/DE602006009014D1/en active Active
- 2006-06-07 AT AT06011758T patent/ATE442097T1/en active
- 2006-06-07 EP EP06011758A patent/EP1733694B1/en active Active
- 2006-06-12 US US11/450,432 patent/US20060286505A1/en not_active Abandoned
- 2006-06-13 KR KR1020060052891A patent/KR101167208B1/en active IP Right Grant
- 2006-06-14 BR BRPI0602204A patent/BRPI0602204B8/en not_active IP Right Cessation
- 2006-06-14 TW TW095121277A patent/TWI373326B/en active
- 2006-06-16 CN CN2006100928082A patent/CN1879575B/en active Active
-
2010
- 2010-05-05 US US12/774,036 patent/US8231385B2/en active Active
Patent Citations (7)
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US4257484A (en) * | 1980-03-10 | 1981-03-24 | Whitley Oran D | Pressure differential circulating valve |
US4744752A (en) * | 1984-07-30 | 1988-05-17 | Kabushiki Kaisha Morita Seisakusho | Dental handpiece control device |
US4791950A (en) * | 1987-01-21 | 1988-12-20 | Danfoss A/S | Pressure limiting valve |
US4944349A (en) * | 1989-02-27 | 1990-07-31 | Von Gonten Jr William D | Combination downhole tubing circulating valve and fluid unloader and method |
US5372197A (en) * | 1993-05-27 | 1994-12-13 | Gcw Development | Tubing unloader apparatus and method |
US6065966A (en) * | 1997-11-21 | 2000-05-23 | Kaltenbach & Voigt Gmbh & Co. | Medical or dental treatment instrument for the treatment of body tissue or a substitute material, in particular by cutting, and tool for such a treatment instrument |
US6827096B1 (en) * | 2003-06-23 | 2004-12-07 | Pacific Industrial Co., Ltd. | Relief valve |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140343589A1 (en) * | 2012-01-12 | 2014-11-20 | Yonsei University Wonju Industry-Academic Cooperation Foundation | Handpiece |
US9498243B2 (en) * | 2012-01-12 | 2016-11-22 | Yonsei University Wonju Industry-Academic Cooperation Foundation | Handpiece |
US11241298B2 (en) * | 2016-11-29 | 2022-02-08 | Guilin Woodpecker Medical Instrument Co., Ltd. | Overload protection device and high-speed dental handpiece comprising same |
Also Published As
Publication number | Publication date |
---|---|
CN1879575B (en) | 2012-10-03 |
DE602006009014D1 (en) | 2009-10-22 |
JP2006346184A (en) | 2006-12-28 |
US20100209871A1 (en) | 2010-08-19 |
KR101167208B1 (en) | 2012-07-24 |
JP4147231B2 (en) | 2008-09-10 |
US8231385B2 (en) | 2012-07-31 |
CN1879575A (en) | 2006-12-20 |
BRPI0602204B8 (en) | 2021-06-22 |
TWI373326B (en) | 2012-10-01 |
EP1733694B1 (en) | 2009-09-09 |
EP1733694A1 (en) | 2006-12-20 |
TW200709805A (en) | 2007-03-16 |
BRPI0602204B1 (en) | 2018-02-27 |
KR20060131636A (en) | 2006-12-20 |
ATE442097T1 (en) | 2009-09-15 |
BRPI0602204A (en) | 2007-02-21 |
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Owner name: NAKANISHI INC., JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KAWAKUBO, KIYOSHI;REEL/FRAME:017967/0778 Effective date: 20060526 |
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