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

Applications Claiming Priority (2)

Publications (1)

Family

ID=37682784

Family Applications (1)

Country Status (3)

Cited By (1)

Families Citing this family (4)

Family Cites Families (4)

• 2006
  • 2006-07-13 FR FR0606404A patent/FR2903592B1/fr not_active Expired - Fee Related
• 2007
  • 2007-07-10 WO PCT/FR2007/051636 patent/WO2008007018A1/fr not_active Ceased
  • 2007-07-10 EP EP07823559A patent/EP2046232A1/de not_active Withdrawn

Non-Patent Citations (1)

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