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EP2046232A1 - Adjustable stop device for dentistry instrument - Google Patents

Adjustable stop device for dentistry instrument

Info

Publication number
EP2046232A1
EP2046232A1 EP07823559A EP07823559A EP2046232A1 EP 2046232 A1 EP2046232 A1 EP 2046232A1 EP 07823559 A EP07823559 A EP 07823559A EP 07823559 A EP07823559 A EP 07823559A EP 2046232 A1 EP2046232 A1 EP 2046232A1
Authority
EP
European Patent Office
Prior art keywords
head
angle
shell
instrument
contra
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Withdrawn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
EP07823559A
Other languages
German (de)
French (fr)
Inventor
Jacques Pernot
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.)
Micro Mega International Manufactures SA
Original Assignee
Micro Mega International Manufactures SA
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 Micro Mega International Manufactures SA filed Critical Micro Mega International Manufactures SA
Publication of EP2046232A1 publication Critical patent/EP2046232A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/16—Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
    • A61B17/1613—Component parts
    • A61B17/1633—Sleeves, i.e. non-rotating parts surrounding the bit shaft, e.g. the sleeve forming a single unit with the bit shaft
    • 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
    • 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
    • A61C5/44—Means for controlling working depth, e.g. supports or boxes with depth-gauging means, stop positioners or files with adjustably-mounted handles
    • 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
    • A61B2090/036—Abutting means, stops, e.g. abutting on tissue or skin abutting on tissue or skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A61C1/12—Angle hand-pieces

Definitions

  • Adjustable stop device for dental instrument is
  • the present invention relates to a new abutment device for dental contra-angles, such as for example against endodontic angles or implant surgery.
  • the invention consists of an abutment assembly and a counter-angle head of dentistry, such as, for example, endodontic or implant surgery contra-angles, the head of which is capable of driving an instrument around it. its longitudinal axis of rotation, device of the type comprising means for securing with the head of the contra-angle bearing the dental instrument, and an extension determining the depth of work, characterized in that the abutment comprises a shell forming a securing means on the head of the counter angle, said shell having a bottom extended on its periphery by a perpendicular envelope so as to form internally a cavity of complementary shape to that of the lower part of the head of the contra-angle, the bottom having a central bore allowing the passage of the instrument, the bottom being extended opposite the envelope by a hollow cylindrical extension positioned coaxially with the instrument and around it, and whose total length is variable and adjustable.
  • the abutment comprises a shell forming a securing means on the head of the counter angle, said shell having a bottom extended on
  • the invention also relates to a stop for limiting the working depth of an instrument of a handpiece or a contra-angle of dentistry, such as by example a counter angle of endotontia or implant surgery, abutment of the type comprising means for securing with a head of the counter angle or the handpiece carrying the dental instrument, and an extension determining the depth of work, characterized in that that the securing means is composed of a shell having a bottom extended on its periphery by a perpendicular envelope so as to form internally a cavity adapted to cover at least partially the head of the counter angle, the bottom having a central bore allowing the passage of the instrument, the bottom being extended opposite the envelope by a hollow cylindrical extension positioned coaxially with the instrument and around it, and whose total length is variable and adjustable.
  • FIG. 1 is an overall view of a contra-angle on which is positioned an adjustable stop according to the invention.
  • Figure 2 is an overall view showing the contra-angle of Figure 1 before securing the abutment visible in Figure 1, and also showing a stop to different depth of adjustment.
  • Figures 3, 4, 5, 6 views of an alternative embodiment of adjustable stop respectively in front view, cut AA, top view of the cylindrical extension and front view of a sleeve screwed internally to said extension.
  • Figures 7 and 8 views of another embodiment respectively in longitudinal section BB and in top view.
  • An adjustable stop (1) is composed of a shell (2) and an axial extension (3) and its function is to limit the working depth (13) of a tool (9) carried by the head of a counter angle or handpiece.
  • the shell (2) internally has a cavity of complementary shape to that of the lower part of the head of the contra-angle on which it fits.
  • This shell (2) has a bottom (4) preferably plane, extended by a casing (5) perpendicular, partially covering the front of the head, and over more than half of its periphery, with a lateral opening (6) for the passage of the body of the counter angle and an upper opening (7).
  • the bottom (4) has a central bore (8) opening on either side for the passage of an instrument (9) driven by the head (10) against -angle.
  • the central bore (8) is provided in the sleeve (12) which is threaded externally and screwed inside the central extension. The diameter of the bore (8) is intended not to hinder the rotation of the instrument regardless of its diameter.
  • the bottom (4) is extended, according to the embodiment shown in the figures, and opposite the casing (5) by an axial extension (3) formed of a cylinder (1 1) threaded either externally or internally, on which or in which is screwed a sleeve (12) cylindrical.
  • the assembly [hollow cylinder (11) - bushing (12)] is positioned coaxially with respect to the instrument and around it, which gives good working stability and avoids the bending of the stop which was a major disadvantage of the prior art.
  • the working depth (13) of the instrument (9) is determined by the position of the lower edge (14) of the sleeve (12) and modifiable by translation thereof relative to the axial extension (3).
  • Figures 7 and 8 show another alternative embodiment of the adjustable stop in section BB and in top view.
  • the threaded cylinder (1 1) is provided at its lower end with a shoulder (ei).
  • the sleeve (12) is provided at its upper end with a shoulder (e 2 ), the two shoulders limiting the maximum stroke of the sleeve.
  • the stroke of the moving part (12) is limited on one side by the shell (2) and on the other side by the stop of (e 2 ) on (ei).
  • the movable part (12) becomes captive, which is important in dentistry where moving parts must not fall into the mouth of the patient.
  • the principle of mounting by crimping, welding, gluing or overmolding at the interface (i) can be employed in the embodiments of FIGS. 1 to 6.
  • the displacement of the sleeve (12) is obtained by screwing or unscrewing but other equivalent modes of displacement can be envisaged, for example by systems with notches, racks, pins or other .. .
  • the securing means of the shell (2) on the head (10) may have different embodiments.
  • a preferred embodiment is that shown in the figures and which consists on the one hand in a circular groove (14a) made in the body of the head (10) and in a plane perpendicular to the axis of the instrument, and on the other hand in a circular form (15) provided at the periphery of the upper opening (7) of the casing (5), and forming a bead, projecting towards the inside of the opening (7).
  • the system can of course be reversed with the bead on the head and the groove provided in the envelope.
  • This embodiment is advantageous to facilitate the installation and removal of the stop and facilitate cleaning and sterilization.
  • the installation and removal is carried out in the axis of the instrument and the angular clearance (D) of the rear opening (6) of 100 ° for example takes into account the bulk of other accessories mounted on the body of the device.
  • Clipping variants may be envisaged for example pin systems engaged in orifices.
  • Fastening means based on principles other than clipping can also be envisaged as for example fastening means by screwing.
  • a sleeve (12) has one or more slots (16) for visualizing the end of the threaded cylinder (11) and to define the working depth by means of indexes (17) provided on the sleeve.
  • the stops according to the invention are made of molded plastic material avoiding scratches on the heads of the contra-angles, which in general are made of stainless steel having undergone special surface treatments.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Dentistry (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Epidemiology (AREA)
  • Neurology (AREA)
  • Neurosurgery (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

The invention relates to a stop device for dentistry contra-angles, such as endodontics or implant surgery contra-angles, device of the type comprising means of locking with a head of the contra-angle holding the dental instrument, and an extension determining the depth of the work, characterized in that it is composed of a shell (2) having a bottom (4) extended on its periphery by a perpendicular cover (5) so as to form internally a cavity in a shape complementary to that of the lower part of the head of the contra-angle, the bottom (4) comprising a central bore for the passage of the instrument, the bottom (4) being extended contrary to the cover (5) by a hollow cylindrical extension positioned coaxially with respect to the instrument and around it, and the total length of which is variable and adjustable.

Description

Dispositif de butée réglable pour instrument de dentisterie. Adjustable stop device for dental instrument.
La présente invention concerne un nouveau dispositif de butée pour les contre- angles de dentisterie, tels que par exemple les contre angles d'endodontie ou de chirurgie implantaire.The present invention relates to a new abutment device for dental contra-angles, such as for example against endodontic angles or implant surgery.
En règle générale, les instruments de chirurgie doivent présenter une bonne aptitude au nettoyage, à la désinfection et à la stérilisation. Les accessoires tels que le module de spray, les dispositifs de réglage de profondeur doivent donc être démontables aisément, afin de permettre un bon nettoyage. De plus, en fonction du type de travail, des habitudes des praticiens, certains de ces accessoires sont plus ou moins utilisés, et il est dans ce cas, judicieux de pouvoir les rendre escamotables.In general, surgical instruments must have good cleaning, disinfection and sterilization capability. Accessories such as the spray module and the depth adjustment devices must therefore be easy to dismantle, in order to allow a good cleaning. In addition, depending on the type of work, habits of practitioners, some of these accessories are more or less used, and it is in this case, judicious to be able to make them retractable.
L'art antérieur connaît déjà des systèmes de réglage en profondeur pour les forages ou les préparations canalaires, comportant une butée clipsable ou vissable sur la tête ou le col de l'instrument comme par exemple ceux décrits dans les documents US 6,213,770 ; DE 40 17 038. Le document US 4 217 098 montre un moyen de clipage adaptable sous le corps du contre angle avec risque de basculement pendant le travail de l'instrument.The prior art already knows depth adjustment systems for drilling or root canal preparations, comprising a stop clip or screwable on the head or neck of the instrument such as those described in US 6,213,770; DE 40 17 038. US 4 217 098 shows an adaptable clipping means under the body of the angle against risk of tilting during the work of the instrument.
Ces systèmes ont pour inconvénients une fragilité au niveau de la liaison entre la butée et la tête ou le col, et la possibilité d'un basculement ou d'une flexion de ladite butée.These systems have the disadvantage of a fragility in the connection between the stop and the head or neck, and the possibility of a tilting or bending of said stop.
Pour palier ces inconvénients, l'invention consiste en un ensemble de butée et d'une tête de contre angle de dentisterie, tels que par exemple les contre-angles d'endodontie ou de chirurgie implantaire dont la tête est apte à entraîner un instrument autour de son axe longitudinal de rotation, dispositif du type comportant des moyens de solidarisation avec la tête du contre-angle portant l'instrument dentaire, et un prolongement déterminant la profondeur du travail, caractérisé en ce que la butée comporte une coque formant moyen de solidarisation sur la tête du contre angle, ladite coque comportant un fond prolongé sur sa périphérie par une enveloppe perpendiculaire de façon à former intérieurement une cavité de forme complémentaire à celle de la partie basse de la tête du contre-angle, le fond comportant une perçage central permettant le passage de l'instrument, le fond étant prolongé à l'opposé de l'enveloppe par un prolongement cylindrique creux positionné coaxialement par rapport à l'instrument et autour de celui-ci, et dont la longueur totale est variable et réglable.To overcome these drawbacks, the invention consists of an abutment assembly and a counter-angle head of dentistry, such as, for example, endodontic or implant surgery contra-angles, the head of which is capable of driving an instrument around it. its longitudinal axis of rotation, device of the type comprising means for securing with the head of the contra-angle bearing the dental instrument, and an extension determining the depth of work, characterized in that the abutment comprises a shell forming a securing means on the head of the counter angle, said shell having a bottom extended on its periphery by a perpendicular envelope so as to form internally a cavity of complementary shape to that of the lower part of the head of the contra-angle, the bottom having a central bore allowing the passage of the instrument, the bottom being extended opposite the envelope by a hollow cylindrical extension positioned coaxially with the instrument and around it, and whose total length is variable and adjustable.
L'invention porte également sur une butée pour limiter la profondeur de travail d'un instrument d'une pièce à main ou d'un contre angle de dentisterie, tels que par exemple un contre angle d'endotontie ou de chirurgie implantaire, butée du type comportant des moyens de solidarisation avec une tête du contre angle ou de la pièce à main portant l'instrument dentaire, et un prolongement déterminant la profondeur du travail, caractérisé en ce que le moyen de solidarisation est composé d'une coque comportant un fond prolongé sur sa périphérie par une enveloppe perpendiculaire de façon à former intérieurement une cavité apte à recouvrir au moins partiellement la tête du contre angle, le fond comportant un perçage central permettant le passage de l'instrument, le fond étant prolongé à l'opposé de l'enveloppe par un prolongement cylindrique creux positionné coaxialement par rapport à l'instrument et autour de celui-ci, et dont la longueur totale est variable et réglable.The invention also relates to a stop for limiting the working depth of an instrument of a handpiece or a contra-angle of dentistry, such as by example a counter angle of endotontia or implant surgery, abutment of the type comprising means for securing with a head of the counter angle or the handpiece carrying the dental instrument, and an extension determining the depth of work, characterized in that that the securing means is composed of a shell having a bottom extended on its periphery by a perpendicular envelope so as to form internally a cavity adapted to cover at least partially the head of the counter angle, the bottom having a central bore allowing the passage of the instrument, the bottom being extended opposite the envelope by a hollow cylindrical extension positioned coaxially with the instrument and around it, and whose total length is variable and adjustable.
On comprendra mieux l'invention à l'aide de la description qui suit et des figures annexées suivantes : figure 1 : vue d'ensemble d'un contre-angle sur lequel est positionné une butée réglable selon l'invention. figure 2 : vue d'ensemble montrant le contre-angle de la figure 1 avant solidarisation de la butée visible en figure 1 , et montrant également une butée à profondeur différente de réglage. figures 3, 4, 5, 6 : vues d'une variante de réalisation de butée réglable respectivement en vue de face, coupe AA, vue de dessus du prolongement cylindrique et vue de face d'une douille vissable intérieurement audit prolongement. figures 7 et 8 : vues d'une autre variante de réalisation respectivement en coupe longitudinale BB et en vue de dessus.The invention will be better understood from the description which follows and from the following appended figures: FIG. 1 is an overall view of a contra-angle on which is positioned an adjustable stop according to the invention. Figure 2 is an overall view showing the contra-angle of Figure 1 before securing the abutment visible in Figure 1, and also showing a stop to different depth of adjustment. Figures 3, 4, 5, 6: views of an alternative embodiment of adjustable stop respectively in front view, cut AA, top view of the cylindrical extension and front view of a sleeve screwed internally to said extension. Figures 7 and 8: views of another embodiment respectively in longitudinal section BB and in top view.
Une butée réglable (1 ) selon l'invention est composée d'une coque (2) et d'un prolongement axial (3) et sa fonction est de limiter la profondeur de travail (13) d'un outil (9) porté par la tête d'un contre angle ou pièce à main.An adjustable stop (1) according to the invention is composed of a shell (2) and an axial extension (3) and its function is to limit the working depth (13) of a tool (9) carried by the head of a counter angle or handpiece.
La coque (2) présente intérieurement une cavité de forme complémentaire à celle de la partie inférieure de la tête du contre-angle sur laquelle elle s'adapte. Cette coque (2) comporte un fond (4) de préférence plan, prolongé par une enveloppe (5) perpendiculaire, recouvrant partiellement l'avant de la tête, et sur plus de la moitié de sa périphérie, avec une ouverture latérale (6) pour le passage du corps du contre angle et une ouverture supérieure (7). Dans le cas des figures 1 à 2 et 7 à 8 le fond (4) comporte un perçage central (8) débouchant de part et d'autre pour le passage d'un instrument (9) entraîné par la tête (10) du contre-angle. Dans le cas des figures 3 à 6 le perçage central (8) est prévu dans la douille (12) qui est filetée extérieurement et vissée à l'intérieur du prolongement central. Le diamètre du perçage (8) est prévu pour ne pas gêner la rotation de l'instrument quelque soit son diamètre.The shell (2) internally has a cavity of complementary shape to that of the lower part of the head of the contra-angle on which it fits. This shell (2) has a bottom (4) preferably plane, extended by a casing (5) perpendicular, partially covering the front of the head, and over more than half of its periphery, with a lateral opening (6) for the passage of the body of the counter angle and an upper opening (7). In the case of Figures 1 to 2 and 7 to 8 the bottom (4) has a central bore (8) opening on either side for the passage of an instrument (9) driven by the head (10) against -angle. In the case of Figures 3 to 6 the central bore (8) is provided in the sleeve (12) which is threaded externally and screwed inside the central extension. The diameter of the bore (8) is intended not to hinder the rotation of the instrument regardless of its diameter.
Le fond (4) est prolongé, selon le mode de réalisation représenté sur les figures, et à l'opposé de l'enveloppe (5) par un prolongement axial (3) formé d'un cylindre (1 1 ) fileté soit extérieurement soit intérieurement, sur lequel ou dans lequel est vissé une douille (12) cylindrique.The bottom (4) is extended, according to the embodiment shown in the figures, and opposite the casing (5) by an axial extension (3) formed of a cylinder (1 1) threaded either externally or internally, on which or in which is screwed a sleeve (12) cylindrical.
En position de travail, l'ensemble [cylindre creux (11 ) - douille (12)] est positionné coaxialement par rapport à l'instrument et autour de celui-ci ce qui donne une bonne stabilité de travail et évite la flexion de la butée qui était un inconvénient majeur de l'art antérieur.In the working position, the assembly [hollow cylinder (11) - bushing (12)] is positioned coaxially with respect to the instrument and around it, which gives good working stability and avoids the bending of the stop which was a major disadvantage of the prior art.
La profondeur de travail (13) de l'instrument (9) est déterminée par la position du bord inférieur (14) de la douille (12) et modifiable par translation de celle-ci par rapport au prolongement axial (3).The working depth (13) of the instrument (9) is determined by the position of the lower edge (14) of the sleeve (12) and modifiable by translation thereof relative to the axial extension (3).
Les figures 7 et 8 montrent une autre variante de réalisation de la butée réglable en coupe BB et en vue de dessus.Figures 7 and 8 show another alternative embodiment of the adjustable stop in section BB and in top view.
La particularité de cette variante réside dans le fait que le cylindre fileté (11 ) est assemblé par vissage ou encliquetage dans la douille (12), l'ensemble ainsi assemblé (1 1 et 12) étant solidarisé à la coque (2) au niveau d'une interface (i) par exemple au moyen de sertissage, soudure, collage ou surmoulage de matière plastique, ou toute technique de solidarisation des deux pièces.The particularity of this variant lies in the fact that the threaded cylinder (11) is assembled by screwing or snapping into the bushing (12), the assembly thus assembled (1 1 and 12) being secured to the shell (2) at the an interface (i) for example by means of crimping, welding, gluing or overmoulding plastic material, or any technique of joining the two parts.
Le cylindre fileté (1 1 ) est muni à son extrémité inférieure d'un épaulement (e-i). La douille (12) est munie à son extrémité supérieure d'un épaulement (e2), les deux épaulements limitant la course maximale de la douille.The threaded cylinder (1 1) is provided at its lower end with a shoulder (ei). The sleeve (12) is provided at its upper end with a shoulder (e 2 ), the two shoulders limiting the maximum stroke of the sleeve.
La course de la pièce mobile (12) est limitée d'un côté par la coque (2) et de l'autre côté par la butée de (e2) sur (e-i).The stroke of the moving part (12) is limited on one side by the shell (2) and on the other side by the stop of (e 2 ) on (ei).
Après le montage de l'ensemble (1 1 et 12), dans la coque (2), la pièce mobile (12) devient imperdable, ce qui est important en dentisterie ou les pièces mobiles ne doivent pas tomber dans la bouche du patient.After assembly of the assembly (1 1 and 12) in the shell (2), the movable part (12) becomes captive, which is important in dentistry where moving parts must not fall into the mouth of the patient.
Le principe de montage par sertissage, soudure, collage ou surmoulage au niveau de l'interface (i) peut être employé sur les modes de réalisation des figures 1 à 6. Selon les modes de réalisation représentés, le déplacement de la douille (12) est obtenu par vissage ou dévissage mais d'autres modes de déplacements équivalents peuvent être envisagés, par exemple par des systèmes à crans, à crémaillères, à ergots ou autres...The principle of mounting by crimping, welding, gluing or overmolding at the interface (i) can be employed in the embodiments of FIGS. 1 to 6. According to the embodiments shown, the displacement of the sleeve (12) is obtained by screwing or unscrewing but other equivalent modes of displacement can be envisaged, for example by systems with notches, racks, pins or other .. .
De même les moyens de solidarisation de la coque (2) sur la tête (10) peuvent présenter différents modes de réalisation.Similarly, the securing means of the shell (2) on the head (10) may have different embodiments.
Un mode de réalisation préféré est celui représenté sur les figures et qui consiste d'une part en une rainure circulaire (14a) pratiquée dans le corps de la tête (10) et selon un plan perpendiculaire à l'axe de l'instrument, et d'autre part en une forme circulaire (15) prévue à la périphérie de l'ouverture supérieure (7) de l'enveloppe (5), et formant un bourrelet, en saillie vers l'intérieur de l'ouverture (7).A preferred embodiment is that shown in the figures and which consists on the one hand in a circular groove (14a) made in the body of the head (10) and in a plane perpendicular to the axis of the instrument, and on the other hand in a circular form (15) provided at the periphery of the upper opening (7) of the casing (5), and forming a bead, projecting towards the inside of the opening (7).
Le système peut bien entendu être inversé avec le bourrelet sur la tête et la rainure prévue dans l'enveloppe.The system can of course be reversed with the bead on the head and the groove provided in the envelope.
Ce mode de réalisation est avantageux pour faciliter la pose et la dépose de la butée et faciliter le nettoyage et la stérilisation. La pose et la dépose s'effectuent dans l'axe de l'instrument et le dégagement angulaire (D) de l'ouverture arrière (6), de 100° par exemple tient compte de l'encombrement d'autres accessoires montés sur le corps de l'appareil.This embodiment is advantageous to facilitate the installation and removal of the stop and facilitate cleaning and sterilization. The installation and removal is carried out in the axis of the instrument and the angular clearance (D) of the rear opening (6) of 100 ° for example takes into account the bulk of other accessories mounted on the body of the device.
Des variantes de clipsage peuvent être envisagées par exemple des systèmes à picots engagés dans des orifices.Clipping variants may be envisaged for example pin systems engaged in orifices.
Des moyens de solidarisation, basés sur d'autre principes que le clipsage peuvent aussi être envisagés comme par exemple des moyens de solidarisation par vissage.Fastening means, based on principles other than clipping can also be envisaged as for example fastening means by screwing.
De façon avantageuse une douille (12) présente une ou plusieurs lumières (16) permettant de visualiser l'extrémité du cylindre fileté (11 ) et de définir la profondeur de travail grâce à des index (17) prévus sur la douille.Advantageously, a sleeve (12) has one or more slots (16) for visualizing the end of the threaded cylinder (11) and to define the working depth by means of indexes (17) provided on the sleeve.
De façon préférentielle les butées selon l'invention sont réalisées en matériau plastique moulé évitant les rayures sur les têtes des contre-angles, qui en général sont réalisées en acier inox ayant subit des traitements de surface spéciaux.Preferably the stops according to the invention are made of molded plastic material avoiding scratches on the heads of the contra-angles, which in general are made of stainless steel having undergone special surface treatments.
On peut en outre proposer, pour un même contre-angle, deux ou plusieurs butées réglables selon l'invention, comme cela est montré en figure 2, dont les systèmes de réglage ont des longueurs différentes de façon à obtenir plusieurs plages de réglages. It is further possible to provide, for the same contra angle, two or more adjustable stops according to the invention, as shown in FIG. 2, whose adjustment systems have different lengths so as to obtain several adjustment ranges.

Claims

REVENDICATIONS
1. Ensemble butée et tête de contre angle de dentisterie, tels que par exemple un contre-angle d'endodontie ou de chirurgie implantaire, butée du type comportant des moyens de solidarisation avec la tête du contre-angle portant l'instrument dentaire, et un prolongement déterminant la profondeur du travail, caractérisé en ce que la butée comporte une coque (2) formant moyen de solidarisation sur la tête du contre angle, ladite coque (2) comportant un fond (4) prolongé sur sa périphérie par une enveloppe (5) perpendiculaire de façon à former intérieurement une cavité de forme complémentaire à celle de la partie basse de la tête du contre-angle, le fond (4) comportant une perçage central permettant le passage de l'instrument, le fond (4) étant prolongé à l'opposé de l'enveloppe (5) par un prolongement cylindrique creux positionné coaxialement par rapport à l'instrument et autour de celui-ci, et dont la longueur totale est variable et réglable.1. An abutment and counter-angle head assembly, such as for example a contra-angle of endodontics or implant surgery, abutment of the type comprising means for securing with the head of the contra-angle bearing the dental instrument, and an extension determining the depth of the work, characterized in that the abutment comprises a shell (2) forming a securing means on the head of the counter angle, said shell (2) having a bottom (4) extended on its periphery by an envelope ( 5) perpendicularly so as to internally form a cavity of complementary shape to that of the lower part of the head of the contra-angle, the bottom (4) having a central bore allowing the passage of the instrument, the bottom (4) being extended opposite the shell (5) by a hollow cylindrical extension positioned coaxially with the instrument and around it, and whose total length is variable and adjustable.
2. Ensemble selon la revendication (1 ), caractérisé en ce que le prolongement cylindrique creux est composé d'un cylindre (1 1 ) fileté extérieurement sur lequel est vissé une douille (12), ou inversement fileté intérieurement et dans lequel est vissé une douille (12).2. An assembly according to claim (1), characterized in that the hollow cylindrical extension is composed of a cylinder (1 1) externally threaded on which is screwed a sleeve (12), or inversely internally threaded and in which is screwed a socket (12).
3. Ensemble selon l'une des revendications (1 à 2) caractérisé en ce que la douille est ajourée.3. Assembly according to one of claims (1 to 2) characterized in that the sleeve is perforated.
4. Ensemble selon l'une des revendications 1 à 3, caractérisé en ce que les moyens de solidarisation de la coque (12) sur la tête (10) soit composés de moyens de clispage complémentaires.4. Assembly according to one of claims 1 to 3, characterized in that the securing means of the shell (12) on the head (10) is composed of complementary cleaving means.
5. Ensemble selon la revendication 4, caractérisé en ce que les moyens de solidarisation sont constitués d'une rainure circulaire (14) coopérant avec un bourrelet circulaire (15) prévu dans la tête et l'enveloppe ou inversement.5. The assembly of claim 4, characterized in that the securing means consist of a circular groove (14) cooperating with a circular bead (15) provided in the head and the envelope or vice versa.
6. Ensemble selon d'une des revendications 2 à 5, caractérisé en ce que le cylindre fileté (11 ) est muni à son extrémité inférieure d'un épaulement (e-i) et la douille (12) est munie à son extrémité supérieure d'un épaulement (e2) limitant la course de la douille mobile. 6. Assembly according to one of claims 2 to 5, characterized in that the threaded cylinder (11) is provided at its lower end with a shoulder (ei) and the sleeve (12) is provided at its upper end with a shoulder (e 2 ) limiting the stroke of the movable sleeve.
7. Ensemble selon l'une des revendication 2 à 6, caractérisé en ce que le cylindre fileté (1 1 ) est solidarisé à la coque (2) au moyen d'une interface (i).7. An assembly according to one of claims 2 to 6, characterized in that the threaded cylinder (1 1) is secured to the shell (2) by means of an interface (i).
8. Butée pour limiter la profondeur de travail d'un instrument d'une pièce à main ou d'un contre angle de dentisterie, tels que par exemple un contre angle d'endodontie ou de chirurgie implantaire, butée du type comportant des moyens de solidarisation avec une tête (10) du contre-angle ou de la pièce à main portant l'instrument dentaire, et un prolongement déterminant la profondeur du travail, caractérisée en ce que le moyen de solidarisation est composé d'une coque (2) comportant un fond (4) prolongé sur sa périphérie par une enveloppe (5) perpendiculaire de façon à former intérieurement une cavité apte à recouvrir au moins partiellement la tête du contre angle, le fond (4) comportant un perçage central permettant le passage de l'instrument, le fond (4) étant prolongé à l'opposé de l'enveloppe (5) par un prolongement cylindrique creux positionné coaxialement par rapport à l'instrument et autour de celui-ci, et dont la longueur totale est variable et réglable.8. Stop for limiting the working depth of an instrument of a handpiece or a contra-angle of dentistry, such as for example an endodontic contra-angle or implant surgery, stop of the type comprising means of fastening with a head (10) of the contra-angle or of the handpiece carrying the dental instrument, and an extension determining the depth of the work, characterized in that the securing means is composed of a shell (2) comprising a bottom (4) extended on its periphery by a casing (5) perpendicular so as to form internally a cavity adapted to cover at least partially the head of the counter angle, the bottom (4) having a central bore allowing the passage of the instrument, the bottom (4) being extended opposite the shell (5) by a hollow cylindrical extension positioned coaxially with the instrument and around it, and whose total length is variable and adjustable e.
9. Butée selon la revendication 8, caractérisée en ce que le prolongement cylindrique creux est composé d'un cylindre (1 1 ) fileté extérieurement sur lequel est vissé une douille (12), ou inversement fileté intérieurement et dans lequel est vissé une douille (12).9. Stopper according to claim 8, characterized in that the hollow cylindrical extension is composed of a cylinder (1 1) externally threaded on which is screwed a sleeve (12), or conversely internally threaded and in which is screwed a sleeve ( 12).
10. Butée selon l'une des revendications 8 à 9 caractérisée en ce que la douille est ajourée.10. Stopper according to one of claims 8 to 9 characterized in that the sleeve is perforated.
1 1. Butée selon l'une des revendications 8 à 10, caractérisée en ce que les moyens de solidarisation de la coque (12) sur la tête (10) sont composés de moyens de clispage complémentaires.1 1. Stop according to one of claims 8 to 10, characterized in that the means for securing the shell (12) on the head (10) are composed of complementary cleaving means.
12. Butée selon la revendication 1 1 , caractérisée en ce que les moyens de solidarisation sont constitués d'une rainure circulaire (14) coopérant avec un bourrelet circulaire (15) prévu dans la tête et l'enveloppe ou inversement. 12. Stopper according to claim 1 1, characterized in that the securing means consist of a circular groove (14) cooperating with a circular bead (15) provided in the head and the envelope or vice versa.
13. Butée selon l'une des revendications 8 à 12, caractérisée en ce que le cylindre fileté (11 ) est muni à son extrémité inférieure d'un épaulement (e-i) et la douille (12) est munie à son extrémité supérieure d'un épaulement (e2) limitant la course de la douille mobile.13. Stopper according to one of claims 8 to 12, characterized in that the threaded cylinder (11) is provided at its lower end with a shoulder (ei) and the sleeve (12) is provided at its upper end with a shoulder (e 2 ) limiting the stroke of the movable sleeve.
14. Butée selon l'une des revendications 8 à 13, caractérisée en ce que le cylindre fileté (1 1 ) est solidarisé à la coque (2) au moyen d'une interface (i). 14. Stopper according to one of claims 8 to 13, characterized in that the threaded cylinder (1 1) is secured to the shell (2) by means of an interface (i).
EP07823559A 2006-07-13 2007-07-10 Adjustable stop device for dentistry instrument Withdrawn EP2046232A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0606404A FR2903592B1 (en) 2006-07-13 2006-07-13 ADJUSTABLE STRAIN DEVICE FOR DENTISTRY INSTRUMENT.
PCT/FR2007/051636 WO2008007018A1 (en) 2006-07-13 2007-07-10 Adjustable stop device for dentistry instrument

Publications (1)

Publication Number Publication Date
EP2046232A1 true EP2046232A1 (en) 2009-04-15

Family

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Application Number Title Priority Date Filing Date
EP07823559A Withdrawn EP2046232A1 (en) 2006-07-13 2007-07-10 Adjustable stop device for dentistry instrument

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EP (1) EP2046232A1 (en)
FR (1) FR2903592B1 (en)
WO (1) WO2008007018A1 (en)

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ES2387727A1 (en) * 2010-07-27 2012-09-28 Carlos Fernando Cardona Labarga Sill of strawberry for implants, applicable to the head of the contranograph. (Machine-translation by Google Translate, not legally binding)

Also Published As

Publication number Publication date
WO2008007018B1 (en) 2008-03-27
WO2008007018A1 (en) 2008-01-17
FR2903592B1 (en) 2009-02-13
FR2903592A1 (en) 2008-01-18

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