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WO2009046896A1 - Butée de profondeur et dispositif d'extraction pour une telle butée de profondeur - Google Patents

Butée de profondeur et dispositif d'extraction pour une telle butée de profondeur Download PDF

Info

Publication number
WO2009046896A1
WO2009046896A1 PCT/EP2008/008270 EP2008008270W WO2009046896A1 WO 2009046896 A1 WO2009046896 A1 WO 2009046896A1 EP 2008008270 W EP2008008270 W EP 2008008270W WO 2009046896 A1 WO2009046896 A1 WO 2009046896A1
Authority
WO
WIPO (PCT)
Prior art keywords
depth stop
dental instrument
longitudinal
longitudinal section
shaft
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.)
Ceased
Application number
PCT/EP2008/008270
Other languages
German (de)
English (en)
Inventor
Rolf Scherberger
Rainer Lutz
Roland Gschwinder
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.)
WIELAND DENTAL IMPLANTS GmbH
Original Assignee
WIELAND DENTAL IMPLANTS 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 WIELAND DENTAL IMPLANTS GmbH filed Critical WIELAND DENTAL IMPLANTS GmbH
Priority to EP08802701A priority Critical patent/EP2194908A1/fr
Publication of WO2009046896A1 publication Critical patent/WO2009046896A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • A61C1/082—Positioning or guiding, e.g. of drills
    • A61C1/084—Positioning or guiding, e.g. of drills of implanting tools
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/03—Automatic limiting or abutting means, e.g. for safety
    • A61B2090/033—Abutting means, stops, e.g. abutting on tissue or skin

Definitions

  • the present invention relates to a depth stop for a dental instrument, which has a working part and a shaft, with a first and a second annular longitudinal section.
  • the invention further relates to a puller for such a depth stop.
  • drills are used to introduce the necessary holes for dental implants in the jawbone. With such a treatment, it is important for the dentist to exactly maintain the drilling depth required for the selected dental implant and thus not to drill too deep.
  • a previously proposed solution to comply with the required drilling depth is to attach certain markers on the drill, which are visually perceived by the dentist. The disadvantage of these markings, however, is that they are not perceptible to the dentist in every case, for example because blood obscures the markings.
  • one of the objects of the present invention is to refine a depth stop of the type mentioned above so that it no longer adheres to the aforementioned disadvantages.
  • a secure attachment of the depth stop should be ensured so that the set depth can not accidentally change to larger values.
  • the depth stop in that the inner diameter of the first longitudinal portion is greater than that of the second longitudinal portion, so that there is a stop surface, which is adapted to strike at the transition from shaft to working part of the dental instrument, and that in At least one radially acting locking element is provided in the region of the second longitudinal section, which engages in a recess in the shaft of the dental instrument and is designed expandable for unlatching.
  • the depth stop according to the invention is not - as usual - pushed over the working part (drill section) of the dental instrument in its position, but instead is plugged from the shaft end on the dental instrument.
  • the stop surface ensures that the depth stop does not get into the working part under any circumstances.
  • the expandable locking element ensures on the one hand that the depth stop is held securely in the longitudinal direction and holds its position, and on the other hand that a slight removal from the dental instrument is made possible by the locking element is widened and pulled by the shaft.
  • the detachable fastening of the depth stop according to the invention makes it possible to work with very high fastening or holding forces, so that it is reliably ensured that the fastening does not come loose during operation. On the other hand, allows the solution according to the invention that the depth stop can be easily removed from the dental instrument despite the large holding forces.
  • the at least one latching element is designed to permit a rotation of the depth stop relative to the dental instrument in the latched state.
  • the advantage of this solution is the fact that a relative movement between the depth stop and dental instrument is possible, so that the depth stop no longer rotates with the dental instrument when in contact with the patient's jaw so that damage to the tissue can be avoided.
  • the depth stop is made of metal.
  • two locking elements are provided in the region of the second longitudinal section, which are arranged distributed uniformly in the circumferential direction of the longitudinal section.
  • the locking elements each have a resilient tongue in the radial direction, provided at the free end of the tongue locking lug and a widening portion, wherein the widening portion at latched detent has a distance from the shaft of the dental instrument.
  • the locking elements are formed so that in the locked state, a space between the shaft and latching tongue remains, which is designed so that can be solved by inserting a puller, the locking lugs from their catch.
  • the dental instrument is a drill, in particular an implant drill.
  • the depth stop can be used particularly advantageously with implant drills.
  • the invention also relates to a puller for such a depth stop according to the invention, the puller having first, second and third annular longitudinal portions whose inner diameters are greater than or equal to the outer diameter of the stem of the dental instrument, the first longitudinal portion having a tapered outer diameter. whose smaller outer diameter is less than or equal to the inner diameter of the depth stop in the region of the expansion section.
  • the puller is fitted onto the shaft of the dental instrument and is introduced with the first longitudinal portion in the widening portion of the depth stop. Due to the conical tion, the locking elements are bent radially outward, so that the locking lugs release from their locked state. The depth stop can then be pulled over the shaft of the dental instrument by means of the puller.
  • the third longitudinal section has a larger outer diameter than the second longitudinal section and serves as a handling aid.
  • the third longitudinal section is knurled on the outside. More preferably, a sleeve is provided, which is designed to be plugged onto the first longitudinal section and has an inner diameter which is greater than the outer diameter of the depth stop at least in the region of its second longitudinal section.
  • FIG. 1 shows several sectional views of a depth stop according to the invention
  • FIG. 2 shows several schematic sectional views of the puller for the aforementioned depth stop
  • Fig. 3 shows two schematic sectional views showing a depth stop plugged onto a dental drill, wherein in one illustration, the puller expands the depth stop and releases from the catch.
  • a depth stop for a dental instrument is shown in several sectional views and generally designated by the reference numeral 10.
  • the metal depth stop 10 is annular and has a bore 11 which completely penetrates the depth stop 10.
  • the depth stop 10 is divided into two functional sections seen in the longitudinal direction, namely a first longitudinal section 12 and an adjoining second longitudinal section 14.
  • the first longitudinal section 12 has the function to specify the maximum drilling depth
  • the second longitudinal section 14 has the function, a To allow attachment to the dental instrument.
  • the first longitudinal section 12 has a substantially uniform outer diameter, however, the inner diameter tapers from a diameter dl to a smaller inner diameter d2 at the transition to the second longitudinal section 14.
  • the smaller inner diameter d2 is at least as large as the outer diameter of the working part of the dental instrument.
  • the working part is the drill section of the implant drill.
  • the second longitudinal section 14, at least in the transition region from the first longitudinal section 12 to the second longitudinal section 14, has an inner diameter which is identified by d3 in FIG. 1 and is slightly smaller than the inner diameter d2 of the longitudinal section 12.
  • This difference in inner diameter leads to a step is formed in the interior of the depth stop 10, which forms a stop surface 16 which is substantially perpendicular to the longitudinal axis.
  • This abutment surface 16 is due to the rotational symmetry of the first longitudinal portion 12 an annular surface.
  • the inner diameter d3 of the second longitudinal section 14 is chosen so that it is greater than the outer diameter of the shaft of the dental instrument, but smaller than the outer diameter of the working part, so for example, the drill section.
  • This size selection of the inner diameter d2 and d3 ensures that the depth stop 10 with its second longitudinal section 14 can not be pushed onto the working part, ie, for example, the drill section, of the dental instrument. Instead, when the depth stop 10 is plugged from the shaft end of the dental instrument, the depth stop 10 with the abutment surface 16 strike the working part of the dental instrument.
  • the first longitudinal section 12 projects into the working part of the dental instrument by a predetermined length (namely the length of the first longitudinal section 12), while the second longitudinal section 14 lies completely in the region of the shaft 84 of the dental instrument.
  • the length of the first longitudinal section 12 determines the maximum drilling depth of the dental instrument.
  • the second longitudinal section 14 serves to secure the depth stop 10 on the dental instrument, namely the shaft 84, against displacement in the longitudinal direction.
  • rotation of the depth stop 10 about the longitudinal axis relative to the dental instrument is still possible.
  • the second longitudinal portion 14 at least one, preferably a plurality of fastening elements which cooperate with the dental instrument so that a displacement of the depth stop 10 is prevented in the longitudinal direction, however, a rotation about the longitudinal axis remains possible.
  • 18 locking tongues are provided as fastening elements, which are indicated in Fig. 1 by the reference numeral 20.
  • the second longitudinal section 14 has two such latching tongues 20, which are arranged uniformly distributed in the circumferential direction.
  • the locking tongues 20 are connected at their end facing the first longitudinal section 12 fixedly connected to the depth stop 10, while the opposite end, which faces the longitudinal end 22 of the depth stop 10, is free.
  • the free end can be deflected in the radial direction by applying a predetermined force.
  • This force can be determined by the design of the locking tongue (eg. Material thickness, type of material, etc.).
  • very high forces acting in the radial direction can be achieved, which prevent unintentional release of a catch.
  • the depth stop 10 In the "relaxed" state of the depth stop 10 (ie, the depth stop 10 is not attached to a dental instrument) protrudes the free end of the locking tabs 20 slightly inwardly towards the longitudinal axis, so that the inner diameter in this area is slightly less than the inner diameter d3.
  • the locking tongues 20 serve to engage in a corresponding depression in the dental instrument, in particular in the shaft region, and thus to prevent a longitudinal displacement at least in one direction.
  • the latching tongue 20 has at its free end a latching lug 24, which has a the end 22 facing, extending substantially perpendicular to the longitudinal axis surface 26. This can be seen particularly clearly in the enlargement representations in FIG.
  • a further region 28 connects, which is part of the latching tongue 20 and consequently also in the radial direction is deflectable.
  • This region 28 extends in the longitudinal direction and forms a widening portion, which is designated in FIG. 1 by the reference numeral 30.
  • This widening section 30 is essentially characterized in that its inner diameter is greater than the inner diameter in the region of the latching lug 24.
  • the inner diameter of the expansion portion 30 is selected so that - in the mounted state of the depth stop 10 - a sufficiently large distance between the shaft and the inner region of the expansion portion 30 remains to plug a removal aid, which will be described later, in this gap can.
  • the widening section 30 extends inwardly towards the longitudinal axis towards the end 22, so that the end region, which is designated by the reference numeral 32, has a smaller inner diameter than the region between the latching lug 24 and End area 32.
  • the dental instrument is a dental or implant drill 80, which has a drill section 82 and a shaft 84. Since the outer diameter of the drill section 82 is greater than the outer diameter of the shaft 84, an edge 86 is created in the transition region, which cooperates with the abutment surface 16 of the depth stop 10 and prevents displacement of the depth stop 10 in the longitudinal direction of the drill section 82.
  • annular groove 88 is provided, in which the detent 24 of the depth stop 10 engages, thus preventing longitudinal displacement of the depth stop 10 to the shaft end.
  • This state can be clearly seen in the upper illustration of FIG. 3.
  • the widening section 30 of the depth stop 10 leaves open an annular gap between the shaft 84 and the widening section 30.
  • the removal aid 40 has three longitudinal sections 42, 44, 46, wherein the first longitudinal section 42 can still be seen in FIG. 3.
  • This first longitudinal section 42 has at its end an annular region 50 which lies between two conical regions 54 and 56. This means that the outer diameter of this annular region increases from the end 52 to the annular region 50 and then again decreases and merges into a straight region 58 in which the outer diameter is constant. Adjoining this straight region 58 is a latching section whose outside diameter is greater than that of the straight section 58 and which has a recess 62.
  • the second longitudinal section 44 has a uniform outer diameter and merges into the third longitudinal section 46 whose outer diameter is significantly greater than that of the second longitudinal section 44.
  • This third longitudinal section 46 serves to handle the peel-off aid 40 and, for this purpose, has a knurling 70 on its outer side.
  • the removal aid 40 is rotationally symmetrical in its structure and has a bore 41 which extends with a uniform inner diameter over the entire length of the removal aid 40 and is adapted to receive at least the shaft 84 of the dental instrument.
  • this removal aid 40 The function of this removal aid 40 is now to release the latched on the dental instrument 80 depth stop 10 from the latch to pull it from the shaft 84 of the dental instrument 80.
  • the annular region 50 is provided on the removal aid 40, which serves to penetrate through the conical region 54 into the widening section 30, ie the gap between the shaft 84 and the second longitudinal section 14 of the depth stop 10, thereby pressing the locking tongues 20 radially outward.
  • the radially acting force of the latching tongue is very large in order to prevent accidental release of the latching, can be easily accomplished by means of the removal aid 40, the expansion.
  • the deflection of the latching tongue 20 outwardly corresponds at least to the depth of the annular groove 88, so that the latching lug 24 comes out of the annular groove 88.
  • an inwardly projecting end portion 32 is provided on the depth stop 10
  • the locking tongues 20 behind the ring portion 50 quasi snap, so that a firm connection between depth stop 10 and Abzieh bamboo 40 is present, which is at least sufficient to the depth stop 10 from the shaft 84 to pull.
  • the removal aid 40 has in its first longitudinal section 42 a sleeve 90 whose inner diameter is greater than the outer diameter of the widened second longitudinal section 14 of the depth stop 10.
  • the sleeve 90 also extends significantly in the longitudinal direction the end of the longitudinal portion 42 of the peel-off 40, so that almost the entire second longitudinal portion 14 of the depth stop 10 of the sleeve 90 - is covered - in the locked state.
  • the depth stop 10 is easy to handle and can be securely fastened to the shaft 84 without the risk that it could enter the drill section 82 of the dental instrument 80 during operation.
  • the attachment described on the shaft 84 ensures a relative rotation about the longitudinal axis between the depth stop 10 and the dental instrument 80. With the help of the described removal aid 40, the depth stop 10 can very easily be separated again from the dental instrument 80 and placed on another dental instrument.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

L'invention concerne une butée de profondeur pour un instrument dentaire (80) qui présente une partie de travail (82) et un manche (84), comprenant une première et une deuxième partie longitudinale (12, 14) annulaire. Selon l'invention, le diamètre intérieur de la première partie longitudinale (12) est supérieure à celui de la deuxième partie longitudinale (14), ce qui permet d'obtenir une surface de butée (16) qui est configurée pour venir en butée au niveau de la transition entre le manche et la partie de travail de l'instrument dentaire (80), et dans la zone de la deuxième partie longitudinale (14) se trouve au moins un élément d'enclenchement (18, 20) à action radiale qui s'enclenche dans un enfoncement (88) dans le manche (84) de l'instrument dentaire (80) et qui est configuré pour pouvoir être écarté pour être désenclenché.
PCT/EP2008/008270 2007-10-01 2008-09-30 Butée de profondeur et dispositif d'extraction pour une telle butée de profondeur Ceased WO2009046896A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08802701A EP2194908A1 (fr) 2007-10-01 2008-09-30 Butée de profondeur et dispositif d'extraction pour une telle butée de profondeur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007048626.1 2007-10-01
DE102007048626A DE102007048626B3 (de) 2007-10-01 2007-10-01 Tiefenanschlag und Abziehvorrichtung für einen solchen Tiefenanschlag

Publications (1)

Publication Number Publication Date
WO2009046896A1 true WO2009046896A1 (fr) 2009-04-16

Family

ID=40220063

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/008270 Ceased WO2009046896A1 (fr) 2007-10-01 2008-09-30 Butée de profondeur et dispositif d'extraction pour une telle butée de profondeur

Country Status (3)

Country Link
EP (1) EP2194908A1 (fr)
DE (1) DE102007048626B3 (fr)
WO (1) WO2009046896A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012011752U1 (de) * 2012-12-05 2013-03-12 Thomas Hess Hilfsvorrichtung zur Entfernung schadhafter Implantataufbauten und zur Messung von von Abutmentabzugskräften

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0373111A2 (fr) * 1988-12-02 1990-06-13 Institut Straumann Ag Dispositif pour le traitement d'un os, en particulier de la mâchoire, et/ou des dents
WO2000025695A1 (fr) * 1998-11-04 2000-05-11 Implant Innovations, Inc. Elements d'arret limitant la penetration d'une meche destinee aux tissus osseux
US20040092940A1 (en) * 2002-11-13 2004-05-13 Zwirnmann Ralph Fritz Adjustable length tap and method for drilling and tapping a bore in bone
US20060188840A1 (en) * 2005-02-24 2006-08-24 Verban Emil M Jr Dental drill system and stop collar for preparing implant bed for implants
EP1759654A1 (fr) * 2005-09-05 2007-03-07 Straumann Holding AG Dispositif dentaire d'alésage avec butée

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU224277B1 (hu) * 1999-06-03 2005-07-28 Arsline S.A. Biztonsági eszköz, kaliber, és eljárás aktív forgácsolóhossz beállítására
US7048477B2 (en) * 2003-06-30 2006-05-23 I.D.M.S., L.L.C. Drill measurement stops
DE202004020516U1 (de) * 2004-06-04 2005-07-21 Gebr. Brasseler Gmbh & Co. Kg Dentalinstrument mit Markierungselement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0373111A2 (fr) * 1988-12-02 1990-06-13 Institut Straumann Ag Dispositif pour le traitement d'un os, en particulier de la mâchoire, et/ou des dents
WO2000025695A1 (fr) * 1998-11-04 2000-05-11 Implant Innovations, Inc. Elements d'arret limitant la penetration d'une meche destinee aux tissus osseux
US20040092940A1 (en) * 2002-11-13 2004-05-13 Zwirnmann Ralph Fritz Adjustable length tap and method for drilling and tapping a bore in bone
US20060188840A1 (en) * 2005-02-24 2006-08-24 Verban Emil M Jr Dental drill system and stop collar for preparing implant bed for implants
EP1759654A1 (fr) * 2005-09-05 2007-03-07 Straumann Holding AG Dispositif dentaire d'alésage avec butée

Also Published As

Publication number Publication date
EP2194908A1 (fr) 2010-06-16
DE102007048626B3 (de) 2009-04-09

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