EP0694368A1 - Vorrichtung zum Schärfen von Schneidinstrumenten, insbesondere von Dentalinstrumenten, sowie Küretten zum Entfernen von Zahnstein - Google Patents

Vorrichtung zum Schärfen von Schneidinstrumenten, insbesondere von Dentalinstrumenten, sowie Küretten zum Entfernen von Zahnstein Download PDF

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Publication number
EP0694368A1
EP0694368A1 EP95401788A EP95401788A EP0694368A1 EP 0694368 A1 EP0694368 A1 EP 0694368A1 EP 95401788 A EP95401788 A EP 95401788A EP 95401788 A EP95401788 A EP 95401788A EP 0694368 A1 EP0694368 A1 EP 0694368A1
Authority
EP
European Patent Office
Prior art keywords
base
carriage
stone
sharpening
flat face
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.)
Withdrawn
Application number
EP95401788A
Other languages
English (en)
French (fr)
Inventor
Lucette Ouhayoun
Jean-Pierre Ouhayoun
Clément Bataille
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.)
Lo Paro
Original Assignee
Lo Paro
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 Lo Paro filed Critical Lo Paro
Publication of EP0694368A1 publication Critical patent/EP0694368A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/60—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of tools not covered by the preceding subgroups
    • B24B3/605—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of tools not covered by the preceding subgroups of surgical or dental instruments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/06—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges

Definitions

  • the present invention relates to an apparatus for sharpening cutting instruments, in particular dental instruments such as scaling curettes.
  • Dental instruments such as scaling curettes, have sharp-edged stainless steel tools that quickly dull on contact with dental surfaces.
  • the sharp edge of the tool is rubbed against a sharpening stone provided for this purpose, keeping the curette in a particular orientation relative to the stone.
  • the disc is actually a protractor which provides a reference orientation, but there is no guarantee that the user actually presents the curette in the direction which is indicated by the disc, so that the sharpening of the tool possibly of poor quality if not performed by an experienced practitioner.
  • an apparatus comprising an axially movable carriage provided with supports for sharpening instruments and means for immobilizing the instruments to be sharpened in the supports, in a given direction relative to a stone. to sharpen fixed.
  • these devices include complex and very sensitive adjustment mechanisms which are poorly resistant to hot sterilization treatment.
  • the present invention aims to provide an apparatus for sharpening, in particular dental curettes, but also all instruments for dental use or not comprising a cutting tool mounted on a handle, which is both simple and economical, ensures complete and rapid sharpening of the tool, and does not have the drawbacks mentioned above.
  • the present invention relates to a device for sharpening instruments of the type comprising a handle and a cutting tool mounted on this handle, in particular dental curettes, comprising a base and a sharpening stone secured to the base and having a flat face on top. of the base, a carriage mounted sliding on the base, in a direction parallel to the flat face of the stone to be sharpened, and provided with at least one substantially rectilinear groove, inclined at a predetermined angle relative to the flat face of the sharpening stone and able to receive the handle of an instrument, the cutting tool of which is applied against the flat face of the sharpening stone, characterized in that the said carriage has a bearing zone adjacent to the said groove and arranged to so as to allow a user to press his hand on the carriage to make it slide on the base, while holding, with the same hand, an instrument whose handle is in embedded in the groove and whose cutting tool is applied against the flat face of the stone.
  • the device according to the invention is particularly simple to use and ensures good orientation of the instrument during its sharpening.
  • the instrument to be sharpened remains oriented in a fixed direction while the carriage slides parallel to the flat face of the stone.
  • the cutting tool of the instrument can be sharpened in its flat parts as well as in its curved parts, owing to the fact that it is the user who maintains the handle of the instrument. It is therefore easy, while retaining the appropriate orientation provided by the groove, to rotate the instrument during the movement of the carriage to sharpen curved parts of the cutting tool.
  • the instrument is held by the user, it is possible to adapt the bearing force of the cutting tool on the stone to be sharpened, depending on the type of instrument to be sharpened.
  • the device according to the invention is particularly easy to use and allows, in a reliable and rapid manner, to sharpen all kinds of tools for cutting dental instruments.
  • the base has a longitudinal groove which passes through it from one end to the other, being parallel to the face of the stone to be sharpened, while the carriage comprises a sliding bar, preferably made of fluoropolymer material, of which the cross section corresponds to that of the groove.
  • the carriage can be maneuvered back and forth while being guided by the groove during the sharpening of a tool.
  • the carriage is constituted by an elongated body in one piece, inscribed in a parallelogram having a thickness of the order of 2 or 3 cm, a height of the order of 5 cm and a length of the order of 16 cm.
  • the slide bar of the carriage can then be secured to the latter by one of its long sides, so that the carriage has its two large faces perpendicular to the stone to be sharpened when the slide rod is engaged in the groove of the base.
  • a plurality of lateral grooves, inclined at different angles ranging from about 5 ° to about 75 ° relative to the flat face of the stone, can be arranged in the large faces of the carriage.
  • the device is symmetrical with respect to a plane perpendicular to the flat face of the stone to be sharpened passing through the sliding axis of the carriage.
  • the carriage has identical grooves on each of its two lateral faces and the base comprises a stone to be sharpened on either side of the groove.
  • the sharpening stone is in the form of a plate, the two large opposite faces of which are suitable for sharpening a tool.
  • the base then supports said stone to be sharpened in the form of a plate while preserving a free space along an edge and facing the underside of the stone so as to allow the sharpening of a tool against the underside of said Pierre.
  • the base has at its lower part a gripping zone which allows the device according to the invention to be used while holding the base in one hand.
  • the device according to the invention can easily withstand a hot sterilization treatment.
  • a zinc and metal alloy can be used, for example zamac.
  • the carriage 1 consists of a metallic upper part 2, produced in this case in a brushed zinc-aluminum alloy, and of a sliding bar 3 made of fluoropolymer.
  • the metal part 2 of the carriage has a vertical section approximately in the form of a quarter of an ellipse, the rounded upper edge 6 of which forms a support zone for the hand of a user.
  • the metal part 2 has two large parallel flat faces 4 and 5 along its rounded edge 6 and two curved walls 7 which move towards each other from said flat faces 4 and 5 to its straight edge 8, so that the thickness E of the rounded edge 6 is greater than the thickness e of the straight edge 8.
  • Rectilinear grooves of constant section 9 are formed in the walls 4 and 5, and die in the walls 7 and 8.
  • the axes of the different grooves 9 are inclined relative to the straight edge 8 at an angle varying from about 5 ° to about 75 °.
  • the distribution of these angles is determined according to the inclinations used to sharpen the most common instruments. For example, it is advantageous to provide a pitch of 5 ° between two grooves.
  • the sliding bar 3 has a parallelepiped shape of thickness e .
  • each groove 9 is substantially parallel to the walls 4 and 5
  • the lower end of each groove 9 opens into the void, next to the curved walls 7 and the sliding bar 3.
  • the base 10 is also made of a brushed zinc-aluminum alloy and has a shape which fits into a rectangular parallelepiped.
  • a longitudinal groove 11 crosses the base 10 from one to the other of its two end walls 12 and 13.
  • the base 10 comprises, on its upper face, a recess 14 with a flat bottom 15 in which is housed a sharpening stone 16, which is retained at its ends by edges 17 which are overhanging the bottom 15 of the recess.
  • Each sharpening stone 16 is in the form of a plate, the two large faces of which are capable of sharpening a tool.
  • Flexible shims 18 are located on the bottom 15, facing the edges 17 to support and retain the stones to be sharpened.
  • the thickness of the shims 18 is chosen so that any untimely sliding of the stones is prevented during the use of the device, the removal of said stones being however possible by exerting sufficient force by hand on them.
  • the sides 19, 20 and the bottom 21 of the base 10 are also hollowed out so as to form a grip zone 22, which makes it possible to hold the base in a substantially horizontal position to use the device in the absence of support.
  • Flexible wedges 23 are also provided at the four lower corners of the base to form the feet in the event of use of the device on a support.
  • the device according to the invention is used as illustrated in FIG. 3.
  • a sharpening instrument here, a dental curette 24 comprising a handle 25 and a cutting tool 26 at the end of this handle, is held by the hand of a user in a groove 9 having the appropriate inclination.
  • the user leans on the support zone 6 of the carriage and slides the carriage in the groove 11 by giving it a back and forth movement as indicated by the double arrow 27.
  • the user thus sharpens the cutting tool 26 in a reliable and rapid manner.
  • the user can adjust the position of the instrument in groove 9, by rotating it for example around its longitudinal axis, so as to sharpen all the cutting parts of the tool.
  • the guidance provided by the groove 9 ensures that the orientation of the instrument relative to the stone to be sharpened remains substantially constant.
  • the user can vary the bearing force of the cutting tool against the stone to be sharpened, for example to insist on sharpening when the carriage moves in one direction and to release the force when the carriage moves in reverse.
  • the recess formed by the curved walls 6 and 7 below the faces 4 and 5 facilitates the use of the device by providing clearance between the carriage and the stone to be sharpened.
  • a dental curette has been shown immobilized by the thumb of the user does not limit the possibilities of using the device according to the invention to this method of gripping the carriage and the instrument to sharpen.
  • the user could hold the curette between his thumb and forefinger by housing it in a groove on the other side of the carriage, which can give him greater freedom of maneuver for adjusting the position of the instrument and the force to be exerted on the cutting tool during sharpening.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Surgery (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
EP95401788A 1994-07-27 1995-07-27 Vorrichtung zum Schärfen von Schneidinstrumenten, insbesondere von Dentalinstrumenten, sowie Küretten zum Entfernen von Zahnstein Withdrawn EP0694368A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9409290A FR2723021B1 (fr) 1994-07-27 1994-07-27 Appareil pour aiguiser des instruments tranchants, en particulier des instruments dentaires tel que les curettes a detartrer
FR9409290 1994-07-27

Publications (1)

Publication Number Publication Date
EP0694368A1 true EP0694368A1 (de) 1996-01-31

Family

ID=9465794

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95401788A Withdrawn EP0694368A1 (de) 1994-07-27 1995-07-27 Vorrichtung zum Schärfen von Schneidinstrumenten, insbesondere von Dentalinstrumenten, sowie Küretten zum Entfernen von Zahnstein

Country Status (2)

Country Link
EP (1) EP0694368A1 (de)
FR (1) FR2723021B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1502701A1 (de) * 2002-02-27 2005-02-02 Nakanishi Inc. Winkelpositionierwerkzeug und dieses verwendende handschälerschleifvorrichtung
WO2011007217A1 (en) * 2009-07-16 2011-01-20 Arnold Deppeler Device and method for sharpening dental curettes
CN112247784A (zh) * 2020-11-02 2021-01-22 郑州康德泰口腔医疗科技有限公司 刮治器刃口打磨盘及使用方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2324025A (en) 1940-05-13 1943-07-13 John H Revell Dental tool grinder
US4010635A (en) 1976-03-17 1977-03-08 United States Steel Corporation Sonic interference suppressor
GB1499975A (en) * 1975-04-07 1978-02-01 Parsons B Honing apparatus
US4217735A (en) * 1978-11-02 1980-08-19 Mcgeoch James Tool sharpening device
US4821462A (en) 1987-08-31 1989-04-18 Moore Steven B Dental instrument sharpening hone
DE4010635C1 (en) * 1990-04-03 1991-06-27 Berthold 5000 Koeln De Schmitz Grinder-sharpener for dental instruments - has angled holder on carriage with grinding stone between guide members

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2324025A (en) 1940-05-13 1943-07-13 John H Revell Dental tool grinder
GB1499975A (en) * 1975-04-07 1978-02-01 Parsons B Honing apparatus
US4010635A (en) 1976-03-17 1977-03-08 United States Steel Corporation Sonic interference suppressor
US4217735A (en) * 1978-11-02 1980-08-19 Mcgeoch James Tool sharpening device
US4821462A (en) 1987-08-31 1989-04-18 Moore Steven B Dental instrument sharpening hone
DE4010635C1 (en) * 1990-04-03 1991-06-27 Berthold 5000 Koeln De Schmitz Grinder-sharpener for dental instruments - has angled holder on carriage with grinding stone between guide members

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1502701A1 (de) * 2002-02-27 2005-02-02 Nakanishi Inc. Winkelpositionierwerkzeug und dieses verwendende handschälerschleifvorrichtung
EP1502701A4 (de) * 2002-02-27 2010-06-30 Nakanishi Inc Winkelpositionierwerkzeug und dieses verwendende handschälerschleifvorrichtung
WO2011007217A1 (en) * 2009-07-16 2011-01-20 Arnold Deppeler Device and method for sharpening dental curettes
US9126302B2 (en) 2009-07-16 2015-09-08 Arnold Deppeler Device and method for sharpening dental curettes
CN112247784A (zh) * 2020-11-02 2021-01-22 郑州康德泰口腔医疗科技有限公司 刮治器刃口打磨盘及使用方法

Also Published As

Publication number Publication date
FR2723021A1 (fr) 1996-02-02
FR2723021B1 (fr) 1996-09-06

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