WO2010086440A1 - Outil rotatif de dentisterie et instrument de traitement dentaire - Google Patents

Outil rotatif de dentisterie et instrument de traitement dentaire Download PDF

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Publication number
WO2010086440A1
WO2010086440A1 PCT/EP2010/051171 EP2010051171W WO2010086440A1 WO 2010086440 A1 WO2010086440 A1 WO 2010086440A1 EP 2010051171 W EP2010051171 W EP 2010051171W WO 2010086440 A1 WO2010086440 A1 WO 2010086440A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotary tool
treatment instrument
dental
head drive
shaft
Prior art date
Application number
PCT/EP2010/051171
Other languages
German (de)
English (en)
Inventor
Bernhard Kuhn
Thomas Classen
Original Assignee
Kaltenbach & 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 & Voigt Gmbh filed Critical Kaltenbach & Voigt Gmbh
Publication of WO2010086440A1 publication Critical patent/WO2010086440A1/fr

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Classifications

    • 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
    • A61C1/14—Tool-holders, i.e. operating tool holders, e.g. burr holders
    • A61C1/142—Operating tool blocking means
    • A61C1/144—Operating tool blocking means constricting the operating tool, e.g. chuck
    • 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
    • A61C1/185—Drives or transmissions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0089—Implanting tools or instruments
    • 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
    • A61C1/055—Ducts for supplying driving or cooling fluid, e.g. air, water through the working tool, e.g. hollow burr
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/40—Implements for surgical treatment of the roots or nerves of the teeth; Nerve needles; Methods or instruments for medication of the roots
    • A61C5/42—Files for root canals; Handgrips or guiding means therefor

Definitions

  • the present invention relates to a dental rotary tool, in particular an implant drill, as well as a dental treatment instrument. Moreover, the invention relates to an extension element and an adapter for use with a rotary tool according to the invention.
  • the dental treatment instrument may in particular be an angular or straight handpiece comprising a head housing in which a corresponding rotary tool for driving can be fixed such that its longitudinal axis forms an angle with the adjacent shaft portion of the handpiece, for example about 90 ° ° can amount.
  • a handpiece is known for example from DE 196 29 902 Al.
  • a drive sleeve rotatably mounted in the head housing is arranged in this known handpiece, in which the shaft of the rotary tool can be fixed.
  • shaft of the rotary tool here refers to that part of the rotary tool which is intended to be inserted into the drive sleeve for fixing the rotary tool
  • the drive sleeve is also referred to as "head drive”.
  • rotary tool herein is meant a tool having a shaft which is adapted to be moved to rotate about the longitudinal axis of the shaft, whereby a continuous rotation may be provided, such as in the case of a drill or a drill Rotational movement in which the direction of rotation changes in a repeated manner, as in the case of a file, for example, the rotary tool can be an implant drill or a root canal file.
  • a torque can be transmitted to a dental rotary tool fixed therein.
  • the treatment instrument should be overall handling friendly.
  • the invention has for its object to provide a dental rotary tool, which is particularly well suited for work in which a particularly large torque is transmitted from the corresponding treatment instrument to the tool. Furthermore, a corresponding associated dental treatment instrument should be specified, as well as possible accessories.
  • a dental rotary tool in particular an implant drill, which has a shaft provided for coupling to a head drive of a dental treatment instrument, the shaft having a driving area for transmitting a torque from the head drive to the rotary tool;
  • the driving region is arranged such that the transmission of the torque takes place in a central region of the head drive or of the shaft.
  • the latching region of the shaft which serves for the axial securing in the overhead drive, can correspond to the correspondingly known embodiments, as they are known, for example, from a so-called annular groove shaft, ie no special locking configurations are required in this regard.
  • the driving range is advantageously designed as a hexagon or multiple tooth. As a result, insertion of the tool into the head drive is facilitated in particular.
  • the shaft can be used in six different rotational positions relative to the head drive.
  • the driving region extends at least partially, preferably completely within the middle third of the shaft. In this way, the transmission of torque is particularly effective possible.
  • the shaft has an annular groove, wherein the distance between the annular groove and the driving area is more than the simple and less than three times, preferably more than one and a half times and less than two and a half times the diameter of the shaft.
  • the annular groove can serve to secure the shaft in the head drive in the axial direction.
  • the rotary tool has a passage line for supplying a cooling medium.
  • the shaft is made of plastic. This material can be used due to the particularly advantageous torque transmission.
  • a dental treatment instrument for operating a rotary tool which has a head drive for coupling to the shaft of the rotary tool.
  • the head drive comprises on its outer side a toothed wheel, wherein - when the rotary tool is inserted along the longitudinal axis of the shank of the rotary tool - the entrainment area of the shank and the area, over which the teeth of the gear extend, overlap.
  • an extension element for use with a rotary tool according to the invention and a treatment instrument according to the invention wherein the extension element is on the one hand suitable to be coupled to the head drive of the treatment instrument and on the other hand has means for holding the rotary tool.
  • the extension element has a passage line for supplying a cooling medium.
  • the means for holding the rotary tool comprise spring elements and / or latching connection elements.
  • the extension element has a depth stop element for limiting a penetration depth of the rotary tool, for example within a bone.
  • an adapter for use with a treatment instrument according to the invention, wherein the adapter is on the one hand suitable to be coupled to the head drive of the treatment instrument and on the other hand has means for holding a rotary tool.
  • the adapter has spring elements for preventing a falling out of the rotary tool from the adapter.
  • a dental treatment instrument for operating a rotary tool having a head drive for coupling to a shaft of a rotary tool and a releasable clamping device for fixing the rotary tool in the head drive, the releasable clamping device comprising an actuator for releasing the fixation of the rotary tool Rotary tool
  • the treatment instrument can also be the treatment instrument according to the invention described above.
  • the tensioning device is designed such that the actuating element must be moved to release the fixation in a direction transverse to the longitudinal axis of the head drive.
  • the height of the head housing can be reduced.
  • the actuator can be made particularly advantageous in ergonomic terms in this way. In particular, easier handling during insertion and removal of the rotary tool is possible.
  • the treatment instrument further comprises a further actuating element for releasing the fixation of the rotary tool
  • the clamping device is designed such that for releasing the fixation of the rotary tool, the actuating element and the further actuating element must be actuated simultaneously.
  • the clamping device is further designed such that a fixing of the rotary tool is possible even without actuation of the actuating element. This further simplifies handling.
  • the clamping device comprises a tool holding element which is at least partially made of ceramic and / or coated with a ceramic material.
  • a tube for supplying a cooling medium is arranged in the head housing.
  • FIG. 1 shows a known implant drill with a driving area at the lower exit end of the head drive, wherein the drill is to be inserted into the head of a dental treatment instrument.
  • Figures 2a to 2c are views of a dental implant according to the invention lantatbohrers;
  • FIGS. 3 a to 3 c are views of the implant drill used in the head drive of the dental treatment instrument; the others
  • Figures 4a to 4c and 5a to 5c are views of an extension element for extending the implant drill, which has elements for latching and fixing the drill; the drill is locked when inserted with the front spring element; the locking can also be done via additional spring elements; with a little force or an auxiliary tool loosening the drill is easily possible;
  • FIGS. 6a to 6c show the extension element inserted into the head drive
  • Fig. 7 is an overview of the used in the drill extension
  • head drive, extension and tool Components: head drive, extension and tool;
  • FIGS. 8a to 8d are views of the drill used with the extension in the overhead drive; in single implants, the distance between the teeth is often so small that the driving head does not fit into the space between the teeth; previous extensions were only possible from about 13mm, resulting in dimensions from the headboard to the drill tip, which make handling extremely difficult; With the new solution, extensions can be achieved as low as 6mm, larger distances can be performed arbitrarily;
  • FIGS. 9a and 9b show a first variant for internal cooling of the drill with an outer seal;
  • FIGS 10a and 10b the embodiment of the extension element in the variant of Figures 9a and 9b;
  • FIG. 11 is a sectional view of the drill used with the extension in the head drive in the variant of Figures 9 and 10 to illustrate the media supply.
  • FIGS. 12a and 12b show a second variant for internal cooling of the drill with an inner seal
  • FIGS. 13a and 13b show the configuration of the extension element in the second variant of FIGS. 12a and 12b;
  • FIGs 14a to 14d representations of the drill used with the extension in the head drive in the variant of Figures 12 and 13 to illustrate the media supply.
  • FIGS. 15a and 15b show two sketches for torque transmission in a conventional rotary tool according to the invention
  • 16a shows an inventive rotary tool in the form of a root canal tool, fixed in the head housing
  • FIG. 17 shows a cross-sectional sketch through a head housing of a treatment instrument according to the invention
  • FIG. 18a shows a sketch of a first variant of a fixing device arranged on an extension element according to the invention for fixing the rotary tool
  • 18b is a sketch of a corresponding second variant
  • FIGS. 19b and 19c show two further embodiments of an extension element according to the invention with a depth stop element
  • FIGS. 22 a to 22 c show different partial views of an inventive device
  • Figures 23 a to 23 c are different partial views as in Figures 22a to 22c, but with a feed element in the form of a tube for a cooling medium and
  • Fig. 24 is a sketch of a variant of a head housing with a feed element for a cooling medium.
  • Fig. 1 shows a not erf ⁇ ndungswashe embodiment.
  • a head housing 2 'of a dental treatment instrument is sketched, in which a drive sleeve, here also referred to as "head drive"4', is rotatably mounted Head drive 4 'has on its outer side a gear 6', for example, a bevel gear, with the aid of a torque from a (not shown) motor of the treatment instrument on the head drive 4 'can be transmitted.
  • a gear 6' for example, a bevel gear
  • this shaft 10 ' has a driving area 8' which cooperates with a corresponding driving area 7 'of the head drive 4'.
  • the driving region 8 'of the shaft 10' is referred to as the "driving region", unless expressly stated otherwise.
  • the driving area 7 'of the head drive 6' and the driving area 8 'of the shaft 10' inserted in the head drive 4 ' are provided at an exit end of the head drive 4'.
  • the shank 10 ' At its upper end region, the shank 10 'has a ring groove 5' which can serve to axially secure the shank 10 'inserted in the head drive 4'.
  • a corresponding annular groove 5 ' is per se prior art and provided, for example, according to the standard DIN EN 1797-1.
  • the shank 10 ' is joined over its entire insertion length.
  • the two outermost contact zones of the two "partner" shaft 10 'and head drive 4' are responsible.
  • FIGS. 3a to 3c an embodiment according to the invention is shown in FIGS. 3a to 3c.
  • the reference numerals are selected accordingly, but without a "dash.”
  • the driving region 8 is now the same the shaft 10 of a corresponding rotary tool 12 is arranged such that the transmission of the torque in a central region of the head drive 6 and the shaft 10 takes place.
  • the entrainment region 8 extends at least partially, preferably completely within the middle third of the shank 10. This is advantageous over the design shown in Fig. 1, because the head drive 4 is most resistant to deformation in its central region against deformation.
  • the shaft 10 of the rotary tool 12 may be formed according to the prior art, so it may in particular have said annular groove 5, for example according to the standard DIN EN 1797-1.
  • the driving region 8 can - as indicated in Figures 2a to 2c - be designed as a hexagon, but can also be otherwise a multi-tooth and be optimized according to physical and production-related requirements for the highest possible transmission.
  • the rotation can now be transmitted through the entrainment region 8, that is, for example, by a splined tooth or by positive locking, approximately in the middle of the shank 10, thereby resulting in the
  • the transmission according to the invention of the torque from the head drive 4 to the shaft 10 of the rotary tool 12 ensures reliable transmission - especially with particularly high torques, as they occur in connection with root canal work. In this way it is possible to manufacture the shaft 10 made of plastic. An identification of different file sizes, for example, can be done particularly simply by color design, as is known per se.
  • Root canal treatment utilizes hand instruments and / or machine driven instruments for mechanical channel cleaning and prior art shaping.
  • a corresponding hand instrument has a handle, a shaft and a working part.
  • the handle is provided in many commercially available instruments with a handle structure and / or an ergonomic shape.
  • the entrainment region 10 of a rotary tool according to the invention is particularly well suited for being used as a grip region, so that the rotary tool according to the invention can be used both as a machine-driven tool and as a hand tool.
  • This is outlined in Figures 16a to 16c for the example of a root canal tool.
  • the driving area 8 may in this case preferably have driving depths.
  • a head housing 2 of a treatment instrument according to the invention is sketched in cross section.
  • the head housing 2 comprises a head drive 4, which has on its outside a gear 6, for example in the form of a bevel gear, which is provided for transmitting a torque from a (not shown) motor to the head drive 4.
  • the head drive 4 is used for coupling with the shaft 10 of a corresponding rotary tool 12.
  • FIG. 17 only the shaft 10, but not the remaining rotary tool, is shown.
  • the shaft 10 has the driving region 8 described above.
  • the head drive 4 preferably has a corresponding driving area, which can cooperate with the driving area 8 of the shaft 10 for transmitting torque.
  • the driving area 8 of the shank 10 extends beyond the area designated by the reference symbol m.
  • the teeth of the gear 6 extend over the area designated by the reference z.
  • the head drive 4 and the shaft 10 is designed such that the driving area 8 and the area z, over which the teeth of the gear 6 extend, overlap. As a result, a particularly effective torque transmission is possible.
  • a bearing arrangement similar to the storage described in DE 10 2005 010 881 Al Head housing 2 may be provided.
  • the forces occurring are distributed here on a variety of individual located in the bearing shells balls, whereby a higher load capacity and service life can be achieved. Further advantages are the simple machining of the bearing parts, the simplicity of the bearing structure and the associated low production costs.
  • an extension element 20 is shown in different views and in cross-section, which is provided for use with a rotary tool 12 according to the invention and a treatment instrument according to the invention.
  • the extension element 20 is on the one hand suitable to be coupled to the head drive 4 of the treatment instrument and on the other hand has means for holding the rotary tool 12.
  • the distance between the teeth is often so small that the driving head, or the head housing 2, does not fit into the space between the teeth.
  • extensions are already possible according to the prior art, but in these the length of the extension is at least 13 mm. This can cause the distance between the lower end of the rotary tool and the head housing is so large that handling is particularly difficult.
  • extension element 20 in conjunction with a treatment instrument according to the invention, it is possible to achieve an extension length which is only 6 mm, so that the handling is facilitated accordingly.
  • the extension element 20 has a driving area 108, which can be designed in particular analogously to the driving area 8 of the shaft 10. Furthermore, can The extension element 20 may be formed on its outside in an upper region in the same way as the shaft 10 described above. "Upper” region refers to that region which extends upwards from the lower boundary of the entrainment region 108 of the extension element 20. Thus, FIG the extension element 20 in particular have a "shank region” 110, which has at its upper end region a ring groove 105, which is formed corresponding to the annular groove 5 of the shaft 10.
  • the extension element 20 may further comprise a depth stop element for limiting a penetration depth of the rotary tool 12, for example within a bone.
  • a depth stop element for example, in the case of an implant drill, a depth stop element may be provided which, in the case of a shaped bore for the implant, touches the highest point of the jawbone and in this way limits the insertion depth. Deep stop elements are known per se from the prior art. Since the circular bone level can be irregular, there are also drills with removable depth stop element. As outlined in FIG. 19a, in the case of an extension element 20 according to the invention, a depth stop element 60 can be provided which can optionally be applied to the extension element 20 and can be removed therefrom.
  • the depth stop element 60 can be provided or designed as a single or multiple usable element.
  • For connection between the depth stop element and the extension element 20 may be provided a clamping, latching or locking connection.
  • the depth stop element 60 By placing the depth stop element 60 on the extension element 20 can - compared to the prior art - the height of the overall structure of extension member 20 and rotary tool 12 are kept particularly low. With the size which can be configured variably by the extension element 20, a particularly good adaptation to local conditions of a work area is possible-with a particularly short length of the rotary tool 12.
  • the extension element 20 itself be designed in different lengths with integrated depth stop element 60.
  • different sizes of rotary tools can be covered with only a few extension elements of different lengths.
  • the variety of different depth stop elements of different diameter sizes and heights can be reduced in this way.
  • colored markings can be provided.
  • the extension member 20 may have a detent or a locking element 40 for fixing the rotary instrument 12, such that the rotary instrument 12 is locked during insertion with a front spring element.
  • the locking can also be done via additional spring elements. With a little force or an auxiliary tool, the release of the rotary instrument 12 is easily possible.
  • FIGS. 6a to 6c Sketches for the combination of extension element 20 and head drive 4 are shown in FIGS. 6a to 6c;
  • FIG. 7 shows a sketch of the three elements rotary tool 12, extension element 20 and head drive 4 in separated form and FIGS. 8a to 8d in assembled form.
  • a variant may be provided in which the rotary tool can be changed by means of a manual operation.
  • the shaft 10 is held in position relative to the extension element 20 in that one or more elements, such as a ball 42 or more balls or segments, wire rings, etc., in a Recess 43 in the shaft 10 press or push, wherein the element or the elements are held by a sleeve 44 in position, acts on the example, a spring force.
  • a spring element 45 may be provided, for example in the form of a spiral spring, which is arranged about the longitudinal axis A and which has a shoulder surface 46 on the sleeve 44 exerts a corresponding force.
  • FIG. 18b Another variant is outlined in Fig. 18b.
  • an axially displaceable sleeve 50 is provided, which is held for example by balls 51 in position.
  • the balls 51 press on a clamping ring 52 arranged inside the sleeve 50, which secures the rotary tool 12 from falling out.
  • the balls 51 are released, so that the clamping ring 52 can escape when removing the rotary tool 12.
  • Both the rotary tool 12 and the extension element 20 may have a passage line for supplying a cooling medium.
  • the passage line may extend in particular in a rotationally symmetrical region around the longitudinal axis A of the shaft 10 or of the extension element 20.
  • Figures 9a and 9b show sketches to a rotary tool 12 with such a passage line 30;
  • an outer seal 32 is provided, for example above the annular groove 5.
  • the outer seal 32 may be an O-ring which is arranged in a groove provided for this purpose, for example above the annular groove 5.
  • FIGS. 10a and 10b show a correspondingly formed extension element 20 with a corresponding throughflow line 130 and a corresponding outer seal 132.
  • FIG. 11 shows a sketch of the composite connection of the overhead drive 4, extension element 20 and rotary tool 12 with inner throughflow lines 30, 130 and outer seals 32, 132 It can be seen that the passage lines 30, 130 are connected continuously.
  • FIG. 14a shows a sketch for the correspondingly assembled connection of head drive 4, extension element 20 and rotary tool 12 with inner through-ducts 30, 130 and inner seals 33, 133.
  • a tube 35 may be provided which is inserted into the through-line 130 of the extension member 20 and which extends down into the through-line 30 of the rotary tool 12 and up to above the inner seal 133 of the extension member 20th
  • FIGS. 20a and 20b An adapter 70 for use with a treatment instrument according to the invention is sketched in FIGS. 20a and 20b, which on the one hand is suitable for being coupled to the head drive 4 of the treatment instrument and on the other hand has means for holding a rotary tool.
  • a user of a treatment instrument according to the invention can use a (not shown) conventional rotary tool, for example a corresponding drill according to the prior art with a standard shank according to DIN EN ISO 7785-2.
  • the locking of the adapter 70 in the head drive 4 may be provided analogously to the locking of the shaft 10.
  • the torque transmission takes place in this case via said standard shaft.
  • the adapter 70 has spring elements 71 for preventing the rotary tool from falling out of the adapter 70.
  • FIG. 21 shows an adapter 70 used in a treatment instrument according to the invention.
  • the head housing 2 of a treatment instrument is outlined.
  • the treatment instrument has a releasable clamping device for fixing the rotary tool 12 in the head drive 4, wherein the clamping device comprises an actuating element 80 for releasing the fixation of the rotary tool.
  • the clamping device is designed such that the actuating element 80 must be moved to release the fixation in a direction B transverse to the longitudinal axis A of the head drive 4.
  • the head housing 2 can be designed in particular so that its dimension in the direction along the longitudinal axis A is particularly small. This allows an overall easier handling in the operation of the Treatment instrument, especially in a spatially very limited environment of a mouth.
  • the actuating element 80 may be arranged on the head housing 2, preferably in an upper end region of the head housing 2.
  • the actuating element 80 can furthermore be arranged such that it is arranged laterally with respect to a longitudinal axis L of an elongated part of the treatment instrument, which adjoins the head housing 2.
  • Actuator 81 for releasing the fixation of the rotary tool 12 wherein the clamping device is designed such that for releasing the fixation of the rotary tool 12, the actuating element 80 and the further actuating element 81 must be actuated simultaneously.
  • the clamping device may be designed such that the further actuating element 81 must be moved to release the fixation in a direction C transverse to the longitudinal axis A of the head drive 4, wherein the direction C is different from the direction B, preferably the latter is directed opposite. In this way it can be ensured that only by a simultaneous actuation of both actuators 80, 81, the rotary tool 12 can be released. In this way, the risk of unintentional release of the rotary tool 12 during handling of the treatment instrument is significantly reduced.
  • the clamping device is advantageously designed such that upon actuation of the actuating element 80 or the actuating elements 80, 81 a stationary in the head housing 2 (not shown) tool holding element is moved out of a rest position, so that in this way the rotary tool 12 for insertion or Removal is released or released. It can also be provided according to a plurality of tool holding elements.
  • the tool holding element may have a guide surface for contact with the actuating element 80 or the actuating elements 80, 81 and a contact surface for contact with the shaft 10 of the rotary tool 12.
  • the guide surface and / or the contact surface may be provided with a ceramic material be coated; It can also be provided that the tool holding element consists of a ceramic material.
  • the tool holding element can be designed such that an insertion of the rotary tool is possible even without actuation of the actuating element.
  • a tube 90 can furthermore be provided for transmitting a cooling medium, which is arranged in the head housing 2 such that it is centrally inserted into the through-line 30 of the rotary tool 12 when the shaft 10 is inserted an inserted extension element 20 is immersed in its passage line 130.
  • the tube 90 may be attached to an upper cover 91 of the head housing 2 for this purpose.
  • the tube 90 in the head housing 2 in particular in the region of the upper cover 91 has a bend of about 90 °, so that it is parallel to the longitudinal axis L of the elongated part of the treatment instrument, for example, to the head housing adjacent, extending from the upper cover 91 protrudes outward, so that a corresponding connection hose can be pushed onto the tube 91.
  • a seal can be provided, which is fixedly arranged on the rotary tool 12 or which is fixedly arranged on the tube 90.
  • the tube 90 may be designed as a replaceable plastic part.
  • an "external”, ie outside the head housing 2 extending cooling medium supply may be provided.
  • an "external”, ie outside the head housing 2 extending cooling medium supply may be provided.
  • this purpose for example, serve on the head housing 2 mounted spray tube 94.
  • this can serve a spray clip, which in the region Head housing 2 can be clipped.

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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)
  • Orthopedic Medicine & Surgery (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Dental Prosthetics (AREA)

Abstract

L'invention concerne un outil rotatif de dentisterie, en particulier un foret d'implantologie, comprenant une tige (10) destinée à se coupler au dispositif d'entraînement de tête (4) d'un instrument de traitement dentaire, la tige (10) comprenant une zone d'entraînement (8) agencée de telle manière que la transmission du couple s'effectue approximativement au centre du dispositif d'entraînement de tête (4) ou de la tige (10). Cette structure permet une transmission aisée de couples relativement importants du dispositif d'entraînement de tête (4) à l'outil rotatif (10). Elle permet ainsi de transmettre sans problème des couples d'au moins 80 Ncm.
PCT/EP2010/051171 2009-02-02 2010-02-01 Outil rotatif de dentisterie et instrument de traitement dentaire WO2010086440A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102009007082 2009-02-02
DE102009007082.6 2009-02-02
DE102009054746A DE102009054746A1 (de) 2009-02-02 2009-12-16 Zahnärztliches Rotationswerkzeug und zahnärztliches Behandlungsinstrument
DE102009054746.0 2009-12-16

Publications (1)

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WO2010086440A1 true WO2010086440A1 (fr) 2010-08-05

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WO (1) WO2010086440A1 (fr)

Citations (7)

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DE2920335A1 (de) * 1979-05-19 1980-11-20 Aesculap Werke Ag Fraeskopf zur kieferfassonierung
DE19629902A1 (de) 1996-07-24 1998-01-29 Kaltenbach & Voigt Winkelförmiges oder gerades Handstück mit einer lösbaren Spannvorrichtung für ein rotierendes Werkzeug, insbesondere für medizinische oder dentale Zwecke
US20060121413A1 (en) * 2002-12-20 2006-06-08 Derek Turner Dental handpiece
DE102005010881A1 (de) 2005-03-09 2006-09-14 Kaltenbach & Voigt Gmbh Medizinisches oder dentalmedizinisches Handstück mit Drehteil und Lageranordnung dafür
US20070065774A1 (en) * 2003-11-25 2007-03-22 Jacques Pernot Dental handpiece having a body formed from a single piece and comprising an electrical and elastic linking component between the mechanical transmission components and the head of the instrument
EP1790292A1 (fr) * 2005-11-24 2007-05-30 EFS - Eberle-Feinwerktechnische Systeme GmbH & Co. KG Dispositif d'accouplement chirurgical
EP1938757A1 (fr) * 2006-12-27 2008-07-02 Gebr. Brasseler GmbH & Co. KG Dispositif de couplage chirurgical

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DE2920335A1 (de) * 1979-05-19 1980-11-20 Aesculap Werke Ag Fraeskopf zur kieferfassonierung
DE19629902A1 (de) 1996-07-24 1998-01-29 Kaltenbach & Voigt Winkelförmiges oder gerades Handstück mit einer lösbaren Spannvorrichtung für ein rotierendes Werkzeug, insbesondere für medizinische oder dentale Zwecke
US20060121413A1 (en) * 2002-12-20 2006-06-08 Derek Turner Dental handpiece
US20070065774A1 (en) * 2003-11-25 2007-03-22 Jacques Pernot Dental handpiece having a body formed from a single piece and comprising an electrical and elastic linking component between the mechanical transmission components and the head of the instrument
DE102005010881A1 (de) 2005-03-09 2006-09-14 Kaltenbach & Voigt Gmbh Medizinisches oder dentalmedizinisches Handstück mit Drehteil und Lageranordnung dafür
EP1790292A1 (fr) * 2005-11-24 2007-05-30 EFS - Eberle-Feinwerktechnische Systeme GmbH & Co. KG Dispositif d'accouplement chirurgical
EP1938757A1 (fr) * 2006-12-27 2008-07-02 Gebr. Brasseler GmbH & Co. KG Dispositif de couplage chirurgical

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