US3894338A - Connector for connecting a dental instrument to a flexible supply tube - Google Patents

Connector for connecting a dental instrument to a flexible supply tube Download PDF

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Publication number
US3894338A
US3894338A US332302A US33230273A US3894338A US 3894338 A US3894338 A US 3894338A US 332302 A US332302 A US 332302A US 33230273 A US33230273 A US 33230273A US 3894338 A US3894338 A US 3894338A
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US
United States
Prior art keywords
connector
instrument
supply tube
coupling
flexible supply
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 - Lifetime
Application number
US332302A
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English (en)
Inventor
Hans Loge
Erich Bareth
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.)
Kaltenbach and Voigt GmbH
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Kaltenbach and Voigt GmbH
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 Kaltenbach and Voigt GmbH filed Critical Kaltenbach and Voigt GmbH
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Publication of US3894338A publication Critical patent/US3894338A/en
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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
    • A61C1/18—Flexible shafts; Clutches or the like; Bearings or lubricating arrangements; Drives or transmissions
    • 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

Definitions

  • ABSTRACT The invention relates to a connector for the axially rotatable connection of a dental instrument provided with a compressed-air motor or a turbine to a flexible supply tube, the instrument being connected releasably to the connector, which connects the pressure medium inlet and, where appropriate, the coolant inlet of the instrument constantly to the source of coolant or pressure medium.
  • the known connector cannot be connected to the connection fitting of conventional flexible supply tubes, wherein hitherto the instrument has been screwed directly to the connection fitting, in such a manner that after the instrument is connected it has not been possible for the instrument to carry out axial rotational movement relatively to the flexible supply tube.
  • the invention has as its object to provide a connector of the type mentioned initially which can be sterilised effectively by itself and which the dentist can couple by itself, if desired, to the connection fitting of a flexible supply tube and uncouple therefrom, selectively.
  • the supply tube is also connected releasably to the connector.
  • the invention proposes that the connector is connected to the instrument by means of a rapid-action coupling. The dentist then simply needs to operate the rapid-action coupling, whereupon he can separate the entire instrument including tool from the connector and replace it with a new instrument provided with the other tool which he wishes to use.
  • the connector is also connected to the flexible supply tube by means of a rapid-action coupling.
  • the connector is possible to release the flexible supply tube by means of rapid-action coupling quickly from the connector even during treatment of a patient and replace with a new supply tube after separation from the pressure medium source.
  • the rapid-action coupling is a snapaction coupling.
  • the connector has simply to be pushed in the direction towards the end of the instrument or on to the connection fitting of the flexible supply tube until the snap-action coupling engages.
  • the snap-action coupling can be so constructed that it can be separated with a strong or sudden pull in the flexible supply tube. It has been found advantageous if according to a further development of the invention the snap-action coupling has a coupling hook mounted on the connector and engaging under the action of a spring behind an annular collar of the instrument or the connection fitting of the flexible supply tube.
  • the coupling hook or hooks is/are mounted directly on the connector, when the instrument is turned relatively to the flexible supply tube the nose of the coupling hook also turns relatively to the annular collar.
  • the bearing of the coupling hook or hooks is/are arranged in each case on a sleeve which is rotatable on the connector but axially nondisplaceable.
  • the nose of the coupling hook abuts on the wall of the annular collar owing to the aforesaid pulling action without the nose and annular collar and thus the sleeve and instrument or sleeve and connection fitting of the tube rotating relatively to one another.
  • a rolling contact bearing is provided between connector and sleeve to facilitate this turning movement.
  • the connector in addition to the pressure medium duct which in this case is used for conveying driving air for the compressed-air motor or the turbine, comprises a return air duct and also respective spray air and spray water ducts used for forming the coolant in the instrument, and the ducts comprise transition chambers at the transition regions between the individual parts of the connector which are axially rotatable relatively to one another.
  • This construction guarantees an air-tight connection between the connector and the instrument and also the flexible supply tube, so that the entry of germs directly into the connector or indirectly by way of the spray is prevented.
  • the connector has an external diameter which is the same size as or approximately the same size as the connection fittings for the instrument and for the flexible supply tube.
  • FIG. 1 shows in elevation, partly in section, a connector coupled to an instrument and a flexible supply tube
  • FIG. 1 is a general reference numeral to refer to a dental instrument in the form of an angle handpiece with a shank elbow 2.
  • an angle handpiece head 3 is arranged on the left-hand end of the shank elbow 2 in which there is situated a compressed-air turbine for driving the tool 4 inserted in the hollow turbine shaft (not visible).
  • Theinstrument I is coupled in axially rotatable manner to a connector which is given the general reference numeral 5.
  • the connector 5 itself is also coupled to be axially rotatable to the connection fitting 6 of a flexible supply tube indicated generally at 7.
  • the flexible supply tube 7 is used in known manner for supplying the instrument 1 with driving air for the turbine and also with coolant for the spray cooling the tool 4 and the tooth being treated, the spray jets being designated at 8.
  • both the instrument I and also the flexible supply tube 7 with connection fitting 6 are connected detachably to the connector 5.
  • the rapidaction coupling is constructed as a snap-action coupling and comprises a coupling hook 11 which is mounted on the connector 5 and engages behind an annular collar of the instrument 1 and the connection fitting 6 of the flexible supply tube 7 respectively for this purpose the coupling hook comprises a nose 12.
  • the bearings 13 of the coupling hooks are each arranged on a sleeve 14 which is rotatable on the connector 5 but axially non-displaceable.
  • Rolling contact bearings 15 constructed as ballbearings are provided in each case between the sleeves l4 and connector 5.
  • the connector 5 For the passage of the various media the connector 5 comprises a central duct 16 for the cooling medium for the spray.
  • further ducts 17 for the driving air are provided, which open within the instrument 1 into an annular duct 18 so that in any rotated position the driving air can pass from the connector 5 into the instrument 1.
  • the central duct 16 opens into a conduit 20 likewise arranged centrally in the instrument I.
  • the driving air and coolant connections at the right-hand side of the connector 5, Le. between the connector 5 and the flexible supply tube 7 or its connection fitting 6 are constructed in a similar way.
  • the connector 5 shown in FIG. 2 does not have any rapid-action couplings for connection to the instrument and to the supply tube is. to the connection fitting of the said tube.
  • an internal screwthread 21 is provided at the left-hand end of the connector 5 for screwing-in the instrument and at the right-hand end there is provided an external screwthread 22 for the screwing-on of the connection fitting of the flexible supply tube.
  • the connector 5 turns relatively to both the instrument 1 and the flexible supply tube 7, for which purpose two parts 23, 24 are provided in the connector 5.
  • the part 23 is joined non-rotatably to the instrument 1.
  • Sealing rings 34, 35 and 36, 37 respectively are arranged between the parts which are adapted to rotate relatively to one another.
  • connection of the connector 5 shown in FIGS. 3 to 5 to the instrument (not shown there) and to the flexible supply tube, which is also not shown, can be effected in the manner shown in FIGS. 1 and 2.
  • the connector 5 comprises, in addition to the pressure medium duct 38 used for conveying driving air for the compressed-air turbine, a return air duct 39 for the return air flowing from the compressed-air motor or turbine, and also a spray air duct 40 and a spray water duct 41 for forming the coolant in the instrument (not shown).
  • the ducts 38, 39, 40, 41 comprise transition chambers 38a, 39a, 40a and 410 at the transition zones between the individual parts 5a, 5b of the connector 5 which are capable of turning relatively to one another about the axis A.
  • Connector for the axially rotatable connection of a dental instrument including a compressed-air motor or a turbine to a flexible supply tube
  • said connector including a rapid-action coupling for detachably connecting the instrument to the connector, which continually connects a pressure medium inlet and a coolant inlet of the instrument to a pressure medium or, respectively, coolant source
  • said connector including a rapid action coupling for detachably connecting said flexible supply tube to the connector, each said rapid-action coupling being a snap-action coupling, each said snapaction coupling comprising a coupling hook mounted in the connector, and spring means biasing the book of one coupling into engagement with annular collar on said instrument and the other hook into engagement with a connection fitting of the flexible supply tube.
  • Connector according to claim 1 comprising bearing means for pivotably supporting the coupling hooks, and sleeve means being rotatably supported on the connector and restrained from axial motion relative thereto, said bearing means being located on said sleeve means.
  • said connector including a driving air duct, a return air duct, a spray air duct, and a spray water duct for forming the coolant in the instrument, said ducts each including transition chambers at transition zones between components of the connector adapted to be axially rotated relatively to each other.

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)
US332302A 1972-02-22 1973-02-14 Connector for connecting a dental instrument to a flexible supply tube Expired - Lifetime US3894338A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE7206582 1972-02-22
DE7247029 1972-12-22

Publications (1)

Publication Number Publication Date
US3894338A true US3894338A (en) 1975-07-15

Family

ID=25946939

Family Applications (1)

Application Number Title Priority Date Filing Date
US332302A Expired - Lifetime US3894338A (en) 1972-02-22 1973-02-14 Connector for connecting a dental instrument to a flexible supply tube

Country Status (5)

Country Link
US (1) US3894338A (enrdf_load_stackoverflow)
AT (1) AT349610B (enrdf_load_stackoverflow)
CH (1) CH562604A5 (enrdf_load_stackoverflow)
FR (1) FR2173034B1 (enrdf_load_stackoverflow)
GB (1) GB1415787A (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182038A (en) * 1975-12-22 1980-01-08 Siemens Aktiengesellschaft Dental handpiece
US4217101A (en) * 1977-09-20 1980-08-12 Kaltenbach & Voight Gmbh & Co. Dental handpiece
US4303392A (en) * 1979-07-09 1981-12-01 A-Dec, Inc. Dental handpiece with quick disconnect coupling
US4321039A (en) * 1979-07-20 1982-03-23 Siemens Aktiengesellschaft Dental handpiece
US4403956A (en) * 1980-07-14 1983-09-13 Nakanishi Dental Mfg., Co., Ltd. Dental handpiece having an optical fiberscope
US5320503A (en) * 1988-05-17 1994-06-14 Patient Solutions Inc. Infusion device with disposable elements
US5352118A (en) * 1991-12-19 1994-10-04 Siemens Aktiengesellschaft Dental instrument having a nozzle for cooling
USD355971S (en) 1993-07-28 1995-02-28 Moshe Meller Dental handpiece
USD356866S (en) 1993-06-14 1995-03-28 Eran Meller Dental handpiece
US6106287A (en) * 1998-12-11 2000-08-22 Yates; Davis Filter system for coupling of a dental handpiece
US6457974B1 (en) * 1999-11-18 2002-10-01 Parkell, Inc. Intraoral dental abrading instrument
US20150335397A1 (en) * 2013-04-09 2015-11-26 Ivoclar Vivadent Ag Syringe
US20160081766A1 (en) * 2014-09-23 2016-03-24 Young Innovations, Inc. Corded Dental Handpiece

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2549177C3 (de) * 1975-11-03 1985-10-03 Siemens AG, 1000 Berlin und 8000 München Kupplungsvorrichtung für zahnärztliche Handstücke
EP0034237B1 (fr) * 1980-02-18 1994-01-26 Bien-Air, D. Mosimann Instrument dentaire avec pièce à main
DE3215207A1 (de) * 1982-04-23 1983-11-03 Kaltenbach & Voigt Gmbh & Co, 7950 Biberach Zahnaerztliche handstueckeinrichtung
GB2174006B (en) * 1983-11-03 1988-09-14 Lares Research Dental handpiece
GB2149465B (en) * 1983-11-15 1987-09-09 Desoutter Ltd A pneumatically operated power tool
WO2003032858A1 (en) * 2001-10-17 2003-04-24 Dentsply International Inc. Unitized modular ultrasonic handpiece cable connector

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3156476A (en) * 1960-11-18 1964-11-10 Fmc Corp Packing for swivel joints
US3173207A (en) * 1959-12-28 1965-03-16 Ritter Co Inc Air driven turbine dental handpiece and air and water connections therefor
US3443747A (en) * 1966-10-14 1969-05-13 Beckman Instruments Inc Fluid coupling for continuous flow centrifuge
US3709630A (en) * 1969-10-28 1973-01-09 Howmet Int Inc Pneumatic motor for medical instruments

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3173207A (en) * 1959-12-28 1965-03-16 Ritter Co Inc Air driven turbine dental handpiece and air and water connections therefor
US3156476A (en) * 1960-11-18 1964-11-10 Fmc Corp Packing for swivel joints
US3443747A (en) * 1966-10-14 1969-05-13 Beckman Instruments Inc Fluid coupling for continuous flow centrifuge
US3709630A (en) * 1969-10-28 1973-01-09 Howmet Int Inc Pneumatic motor for medical instruments

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182038A (en) * 1975-12-22 1980-01-08 Siemens Aktiengesellschaft Dental handpiece
US4217101A (en) * 1977-09-20 1980-08-12 Kaltenbach & Voight Gmbh & Co. Dental handpiece
US4303392A (en) * 1979-07-09 1981-12-01 A-Dec, Inc. Dental handpiece with quick disconnect coupling
US4321039A (en) * 1979-07-20 1982-03-23 Siemens Aktiengesellschaft Dental handpiece
US4403956A (en) * 1980-07-14 1983-09-13 Nakanishi Dental Mfg., Co., Ltd. Dental handpiece having an optical fiberscope
US5320503A (en) * 1988-05-17 1994-06-14 Patient Solutions Inc. Infusion device with disposable elements
US5352118A (en) * 1991-12-19 1994-10-04 Siemens Aktiengesellschaft Dental instrument having a nozzle for cooling
USD356866S (en) 1993-06-14 1995-03-28 Eran Meller Dental handpiece
USD355971S (en) 1993-07-28 1995-02-28 Moshe Meller Dental handpiece
US6106287A (en) * 1998-12-11 2000-08-22 Yates; Davis Filter system for coupling of a dental handpiece
US6457974B1 (en) * 1999-11-18 2002-10-01 Parkell, Inc. Intraoral dental abrading instrument
US20150335397A1 (en) * 2013-04-09 2015-11-26 Ivoclar Vivadent Ag Syringe
US9901419B2 (en) * 2013-04-09 2018-02-27 Ivoclar Vivadent Ag Syringe
US20160081766A1 (en) * 2014-09-23 2016-03-24 Young Innovations, Inc. Corded Dental Handpiece

Also Published As

Publication number Publication date
AT349610B (de) 1979-04-10
FR2173034B1 (enrdf_load_stackoverflow) 1975-12-12
GB1415787A (en) 1975-11-26
FR2173034A1 (enrdf_load_stackoverflow) 1973-10-05
CH562604A5 (enrdf_load_stackoverflow) 1975-06-13
ATA130773A (de) 1978-09-15

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