WO2007104842A1 - Device for guiding an implant drill, and method for fitting an axial implant using this device - Google Patents

Device for guiding an implant drill, and method for fitting an axial implant using this device Download PDF

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Publication number
WO2007104842A1
WO2007104842A1 PCT/FR2007/000274 FR2007000274W WO2007104842A1 WO 2007104842 A1 WO2007104842 A1 WO 2007104842A1 FR 2007000274 W FR2007000274 W FR 2007000274W WO 2007104842 A1 WO2007104842 A1 WO 2007104842A1
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WO
WIPO (PCT)
Prior art keywords
implant
drill
according
barrel
characterized
Prior art date
Application number
PCT/FR2007/000274
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French (fr)
Inventor
Pierre Caillon
Original Assignee
Obl
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
Priority to FR0602269A priority Critical patent/FR2898485B1/en
Priority to FR0602269 priority
Application filed by Obl filed Critical Obl
Publication of WO2007104842A1 publication Critical patent/WO2007104842A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08Machine parts specially adapted for dentistry
    • A61C1/082Positioning or guiding, e.g. of drills
    • A61C1/084Positioning or guiding, e.g. of drills of implanting tools
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/001Multiple implanting technique, i.e. multiple component implants introduced in the jaw from different directions

Abstract

The surgical implant guide (2) is placed astride a maxillary or mandibular arch. It comprises drill-bush holders (6) arranged in bores (4) of a template (3). Drill bushes (7), able to axially guide a drill (2), are inserted in the drill-bush holders (6). Each drill-bush holder (6) has the general shape of a ring (6) with a slit (8) opposite a notch (5) of the template (3). The width of the slit (8) and the width of the notch (5) are considerably less than the transverse dimension of the ring (6), while at the same time being greater than the diameter of the drill (2) or, alternatively, than the diameter of the implant that is to be fitted. The ring is alternatively provided with a rib (14) and/or with wings (15) on the edges of the slit (8). Application for guiding the drilling operation and for screwing in long axial implants in the sectors of the oral cavity where the axial clearance is limited, especially in the posterior sectors.

Description

GUIDING DEVICE OF A FOREST IMPLANT AND METHOD FOR INSTALLATION OF AXIAL IMPLANT USING THIS DEVICE.

TECHNICAL FIELD OF INVENTION

The present invention relates to a device for guiding an implant drill and a method using this device for fitting an axial implant in the bone of a maxillary or mandibular arch of a patient.

BACKGROUND OF THE INVENTION

Aesthetic considerations or therapeutic indications often lead to replace dentures missing teeth of the altered teeth of a patient. The most common implants are still prosthetics for dental or mucous support, while develops prosthetics anchored in the mandible or maxilla • patient using one or more implants screwed into holes drilled in the bone tissue or simply inserted into osteotomies.

The endosseous dental implants are divided into different categories according to their shapes and insertion modes.

A first category consists of axial implants, or more generally by vertically inserting implants on the alveolar ridge. The axial screw implant system most commonly used is the system called "Branemark", named after its inventor, who divulged it in France in FR-2032287, published November 27, 1970.

It is known to use modern techniques of medical imaging coupled with robotic techniques to simulate three-dimensional computer installation of this type of implant before any intervention, and manufacture a drilling template to guide the surgeon odontological during the operation. The implementation of these techniques has dramatically increased the rate of obtaining good aesthetic results, while reducing the risk of postoperative complications. A method and device of this type to determine the ideal location of an axial implant, and designed for the precise placement of it, are described in US Patent No. 5,320,529, in the name of D. pompa, published on 14 June 1994. in this method, a stereolithographic model of the jawbone is produced from tomographic sections, and it allows the practitioner to simulate this model laying aids. A surgical guide is made by molding the model of the bone and radio-opaque models of the implants in place, armed with their carrier implants. Drilling guns inside diameters corresponding to drill bits of various sizes are then placed in the footprints of the carrier implants.

The device for guiding a drill described in US Patent No. 5,743,916, to A. Greenberg et al., Published April 28, 1998, shows the previous principle of using different diameter drill guns interior inserted into single diameter bores. An additional user comfort element is constituted by a pipe carrier having a strip serving as a handle. The bar also provides space for drilling guns like the cartridges in a cartridge, and shall indicate their sizes.

The method and device described in the international patent application WO 03/071972, in the name of OBL company, published on 4 September 2003, are the two previous types, but differ notably by fully exploiting the possibilities and benefits of an implant computer simulation without using multiple templates, or molded from a real model of the bone. A second category of implants is that of lateral insertion implants in bone mâchoire-. These implants generally have a vertical rod for supporting the prosthesis and a base perpendicular to the shaft, consists of a plate or one or more disks. For example, an implant of this type having • a perforated rectangular plate is described in the French patent application FR-2302715, published October 1, 1976 in the names of B. Clunet-Coste and J. Maneuf. This second class of implants has numerous advantages over the first, particularly when the bone volume available for implantation is reduced, or when the opening of the oral cavity is too low to achieve an axial implantation. In order to also achieve with great accuracy the complementary shaped osteotomy implant lateral insertion, the applicant company has already proposed a customized implant surgery guide, which has been the subject of international patent application WO2005 / 120385 published on 22 December 2005.

The drill template is manufactured in an automated way from the tomographic sections of the patient's mandible by means of an implant simulation software.

The resulting implant guide is of the type placed astride the alveolar ridge of a maxillary or mandibular arch, and has at least one drilling tube laterally open.

Perfectly suitable for the production of an osteotomy for implant-disk, this guide device at least a portion of the inner surface of a barrel and at least a portion of the outer surface of the cutter cooperating with each other and ensuring the maintenance axial total of the cutter relative to the barrel.

By its very function, it is clear that a lateral support of the cutter is not provided by this type of template. It is therefore not suitable for use with an implant drill for laying axial implants, although the possibility of a lateral insertion of the drill can be an advantage when the opening of the oral cavity is small.

International patent application WO 2004/075771 in the name of the company MATERIALIZE, published on 10 September 2004, discloses an implant guide having at least one bore having a side opening for inserting a drill, to make this bore more accessible.

However, the latter document only mentions the technical problem in functional terms, without specifying the technical specifications of the solution.

It is therefore clear from the above cited documents that various devices for guiding drill bits or cutters implant for the establishment of axial implants or discs are known in the prior art.

However, none of these systems are designed for the use of axial implants if the intervention area offers the possibility of a limited axial displacement.

GENERAL DESCRIPTION OF INVENTION

The present invention relates to a device for guiding a drill implant whose characteristics are intended to fill an important gap in the prior art. It specifically relates to an implant drill guide device, of the type placed astride a maxillary or mandibular arch, comprising at least a barrel holder arranged in at least a substantially vertical axis of bore of a template and drilling at least one removable barrel, adapted to axially guide the drill bit, and inserted into the corresponding gun-door.

The drill guide device implant according to the invention is characterized, firstly, in that the cannon holder is of the general form of a ring having a slit in an axial direction opposite a substantially vertical notch the template extending in a substantially horizontal direction, and, secondly, in that the width of the slit and the width of the notch are substantially less than the transverse dimension of the ring while being superior to the diameter of drill guide. It also benefits from the fact that the width of the slot of the ring and the width of the notch of the template are preferably greater than the diameter of a predetermined type of implant.

Highly advantageously, the ring is annular in shape and the outer surface of the barrel is cylindrically shaped.

Preferably, this ring also includes externally at least one fin or longitudinal rib.

This rib extends radially and alternately or simultaneously, the vane preferably extends in a plane tangential to the ring from a straight edge of the slot.

The portion of the outer barrel to the template preferably comprises an external shoulder in a radial direction, cooperating with the circular edge vis-à-vis of the barrel holder. As for the portion of the inner barrel to the template, it preferably comprises an internal shoulder in a radial direction, cooperating with the circular edge vis-à-vis said bore.

According to a variant of the invention, of pulling more benefit that the portion of the outer barrel to the template is provided with a bar extending in a substantially radial direction.

Preferably, this strip has an indication of the internal diameter of the barrel. The outer surface of the barrel advantageously comprises, for its part, an indication of the size of the barrel holder to which it corresponds.

Preferably, the width of the slit and the width of the notch, reduced by the value of a functional clearance, are selected from the group of values ​​3.4 mm, 3.75 mm, 4.00 mm, 4, 2 mm, 5.00 mm, 6.00 mm. The present invention also relates to a method for laying a "axial implant in the bone of a maxilla or mandible of a patient implementing the implant drill guide device described above. This method advantageously comprises the following steps: a) placement of the horse guiding device on a maxillary or mandibular arch, b) axial engagement of a drilling tube fitted to an implant drill predetermined diameter, previously mounted on a drill holder; c) lateral engagement in the notch of the template and into the slot of the barrel holder a portion of the drill left exposed by the drilling tube; d) axial engagement of the drilling tube in the barrel holder by sliding axially along the drill; e ) a drilling in the bone to receive the implant; f) lateral clearance through the slot of the ring and the recess of the template of the part of the drill left exposed by the drilling tube the process according to. The invention preferably further includes a side engaging step of the implant mounted on a fixture mount in the notch of the template and into the slot of the ring, before screwing in the drilling of the bone.

These few essential specifications make apparent to the practitioner the advantages provided by the drill guide device implant according to the invention and by the method implementing it, compared with the state of the prior art.

The detailed specifications of the invention, including examples of advantageous selections of dimensional characteristics of its components, and drills and implants for which it was designed, are given in the following description in conjunction with the accompanying drawings. It should be noted that these drawings have no other purpose than to illustrate the text of the description and do not in any way constitute a limitation of the scope of the invention. BRIEF DESCRIPTION OF DRAWINGS

Figure 1 is an exploded view of a first embodiment of the device for guiding an implant drill according to the invention, intended to be placed on an alveolar crest of a mandible.

Figure 2 is an exploded view of an alternative embodiment of the device for guiding an implant drill according to the invention. The figure clearly shows the array of the barrel which is characteristic of this variant. Figure 3 shows the use of the alternative embodiment of the invention with a drill.

Figure 4 shows in detail a barrel holder characteristic of another alternative embodiment of the device for guiding an implant drill according to the invention, Figure 5 shows the use with a drill.

DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION

Figure 1 shows as an example a guiding device 1 of implant drill custom developed for the installation of seven axial implants in a mandible. The installation of each of these endo-bone implants usually requires the completion of a cylindrical osteotomy vertical axis ZZ '.

The osteotomy is performed by the practitioner by means of a drilling head 2 (shown in Figure 3) inserted vertically into the mandible. The axis and the depth of the osteotomy must respect the constraints of the implant planning. This is achieved using a surgical guide 1 placed astride the alveolar ridge, which allows the practitioner to achieve very high operating precision guiding the drill 2.

The guiding device 1 according to the invention consists of a template 3 obtained by a stereolithographic method from the patient's scan data and the implant simulation. 3 shown jig comprises seven cylinder bores 4 axes ZZ 'corresponding to the axes of the future implants. These bores 4 have notches 5 are substantially vertical and extending laterally toward cheek, that is to say towards the outside of the oral cavity. The bores 4 are provided with the inserts 6, each in the form of annular ring bonded to one inside of the jig 3. The outer wall of each of the inserts 6 has an annular groove promoting anchorage in the bore 4. The inserts 6 are preferably made of titanium alloy, usually TA6V.

These inserts 6 enclose the cylindrical drilling tubes 7 (only one shown in Figure 1) and thus act as carrier guns. The drilling tubes 7 are preferably made of steel, such as I 1 INOX 316L.

The cannon holder 6 are provided for guiding and axial retention of the drill bit 2, and also to allow the lateral engagement thereof by the notch 5 of the jig 3 without requiring a large opening of the jaws. To do this, each of the cannon holder 6 has an axial slit 8 facing one corresponding recess 5 of the jig 3.

The upper portion of a barrel 7 has an external shoulder 9 for limiting its penetration into the corresponding barrel holder 6.

In a similar purpose, the lower part of a barrel 7 has an internal shoulder 10 (shown in Figures 2 and 3) cooperating with the bottom of the bore 4 of the corresponding jig 3.

The width of the slot 8 of a barrel holder 6 is greater than the diameter of the drill bit 2 so as to allow the passage of the latter, but substantially less than the diameter of the barrel holder 6 in order to ensure guiding a drilling tube 7 .. Similarly, the width of a notch 5 of the jig 3 is greater than the diameter of the drill bit 2, but substantially less than the diameter of the insert 6 to ensure the maintenance of one insert 6 in the bore 4 of the jig 3.

According surgical practice, the osteotomy of the size required for the installation of an axial implant is gradually realized through several drills 2 increasing diameters.

The width of the slot 8 of the barrel holder 6 and the width of the notch 5 of the jig 3 are thus adapted to the drill diameter 2 strongest.

For example, for an implant 3.75 mm or 4.00 mm, the diameters of the drill bits are used successively (in mm): 2.0 / 2.8 / 3.0 / 3.2 / 3.4.

In this case, the widths of the slot 8 and the notch 5, reduced by the value of a functional clearance, is in the order of 3.4 mm.

For implants of 5.00 mm or 6.00 mm, the 2 sets of bits used respectively have inheritance diameters (in mm): 2.0 / 2.8 / 3.0 / 3.2 / 3.4 / 4.2 or 2.0 / 2.8 / 3.0 / 3.2 / 3.4 / 4.2 / 5.0.

In these cases, the critical width of the slot 8 and notch 5 are thus respectively 4.2 mm and 5.0 mm.

During the operating sequence, the bits of each diameter are perfectly guided by the template inserts 6 3 by means of drilling tubes 7 having an outer diameter corresponding to the inner diameter of the insert 6, and an inner diameter corresponding to the drill 2.

To facilitate gripping the drilling tubes 7, according to a variant shown in Figures 2 and 3, a strip 11 is arranged at the upper part.

The strip 11, of flattened shape, extends in a radial direction. This shape advantageously allows the gripper bar 11 comprise on one side an easily readable indication of the internal diameter of the barrel 7. The diameter of the barrel holder 6 is suitable for its engraved on the outer wall 12 of the central portion of the barrel 7.

The advantage of the drill guide 1 2 implant device described above is to solve the difficulty of the surgical access to the posterior areas of the maxilla and the mandible for placing implants type "long" without deviating from the axis ZZ 'of drilling. Figure 3 demonstrates the improved ergonomics of this ancillary surgical instrumentation: the shank 13 of the drill bit 2 is in position to be guided by the drilling tube 7 without it being necessary to raise the drill point 2 to above the jig 3 for introduction into the barrel holder 6.

Indeed, the use of the guide device 1 described above provides the advantageous result. After the guiding device has been placed on horseback on the mandibular arch, and has been equipped with its cannon holder 6 - 8 slots of said door-guns being disposed opposite the recesses 5 jigs 3 - each drilling is obtained axially engaging the drilling tube 7 fitted to the drilling head 2 suitable predetermined diameter, previously mounted on a drill holder and then engaging laterally into the slot 5 and into the slot 8, the portion of the drill 2 left exposed by drilling gun 7.

The drilling tube 7 is then engaged axially in the barrel holder 6, by axial sliding along the drilling head 2.

After execution of drilling in the bone to receive the implant, the practitioner notes the drill holder, and hence the drilling tube, so that it can then disengage laterally, always through the slot 8 and the notch 5, the portion of the drill 2 left exposed by the drilling tube.

If drilling is performed at a high speed, higher than 1000 t / min, advocated by some manufacturers of implants, the ring 6 constituting the pipe carrier is subjected to substantial mechanical and thermal stresses.

In this case, there is a risk that the ring 6 is rotated in its bore 4, and closes thereby the notch 5 of the jig 3, by subsequently preventing lateral disengagement of the drill bit 2.

There is also a risk of oscillations of the ring 6 in its bore 4, which can lead to destruction thereof.

To overcome these drawbacks, the ring 6 is, in another variant of the drill 1 guide device implant 2 according to the invention, provided with a longitudinal rib 14 and fins 15. As shown clearly in Figure 4, 15 rectangular fins are arranged on the edges of the slot 8, and extend in a tangential plane to the ring 6. a cross section of the barrel holder is of the kind of the general shape of an omega.

The outer rib 14 extends radially relative to the axis of symmetry of the ring 6, and longitudinally in the longitudinal plane of symmetry thereof.

Figure 5 shows the use of this other variant with a drill bit 2, and it is easily understood that the rib 14 and the fins 15 anchored in the jig 3 improve the axial retaining ring 6 in the template 3, and blocking in rotation.

Improved retention of the ring 6 makes it possible to increase the width of the slot 8 and the width of the notch 5 of the template .3 to values ​​above the diameter of the implant to be placed.

In this other variant, the widths of the slot 8 and the notch 5, reduced by the value of a functional clearance, are preferably of the order of the diameters of the implants used, that is to say 3, 75 mm, 4.00 mm, 5.00 mm or 6.00 mm.

This arrangement allows the lateral engagement of an implant in the notch 5 of the template 3 in the slot 8 of the barrel door S.

In this way, the jig 3 used to guide the drill bit 2 can be used by the practitioner to guide also the screwing an implant, in particular of "long", mounted on its implant holder, even if the space level of a posterior maxilla and mandible is restricted.

The implant, using the implant holder, will be guided by, and in, the barrel holder 6 that only in the last few millimeters of its travel (usually the last 9 mm).

But this additional function of guiding the implant, even partial, is however very advantageous for the practitioner because, despite the use of a surgical guide, implant surgery may experience several uncertainties as to its accuracy, given the many steps successive necessary. The reasons for these hazards are, firstly, the variable bone density (although it may be quantified previously in the analysis of implant simulation) and, secondly, the difficulty of insertion centering " manual "of the implant.

Centering "manual" original is carried out in a barrel holder 6 of much greater diameter than that of the selected implant, since the barrel holder 6 receives drilling tubes 7 successive diameters adapted to the bone density met, as was determined by image processing.

This insertion of the implant centering will be more difficult to succeed than the operator works in a later site of a maxillary or mandibular arch. The result found is often obtained with a parallax plus with a long implant.

The drill guide 1 of device implant 2 according to the invention is preferably intended to posterior region of the oral cavity, and, in general, to areas where the axial movement necessary for the installation of an axial implant is limited, but it can also be used in the lateral sectors and even in earlier lines of maxillary and mandibular arches.

Indeed, the barrel holder 6 with a side slit 8 also brings, whatever the situation of the intervention, three additional benefits:

- a first advantage is that this arrangement allows to evaluate the portion of keratinized gingiva (gum fibrous unlike the elastic alveolar mucosa depending on the position of the mucogingival line) between the point of impact of the drill bit 2 and the mucogingival line. For this, it suffices to measure with the aid of a graduated periodontal probe said distance during the preoperative endo-buccal control anatomical adaptation of the guiding device 1. Then, it is necessary to refer each measurement recorded in each remarkable point placing the guide device 1 of the plaster model of the arch to be treated. A Guide closed pipe carrier does not allow to perform this procedure to ensure the preservation of keratinized gingiva by modifying the surgical procedure usually described with the use of an initial bit mucous prior to the osteotomy of the edentulous ridge . - a second advantage is that this arrangement increases the irrigation of the drill bit 2 typically positioned on the handpiece (or against-angle) held by the operator. Thus, the barrel holder 6 provided with a side slit 8 provides the possibility of additional irrigation provided by the player, in its role of operating aid with increased precision aiming and access through the slot 8 of the barrel holder 6. a third advantage is that this arrangement facilitates prosthetic approach, if the operator wishes to record the respective positioning of the implants after 1 surgery. The impression coping is screwed directly on the implant, or a transmucosal abutment. Then the joining of the same transfer with a plastic material to immediate hardening (chemo obtained by polymerization and / or photo-polymerization) is facilitated by the slit 8 of the carrier barrel 6 which allows sufficient space for the material to block the transfer of impression in the guide device 1. It should be noted that the attachment of the impression coping using the guide device 1 as guardian allows repositioning of the implant replica on the model reference plaster to to produce the immediate denture in postoperative phase with greater accuracy.

It goes without saying that the invention is not limited to the preferred embodiments described above.

These preferred embodiments relate to devices 1 to be placed preferably on the alveolar ridge of a lower arch.

Devices 1 according to the invention would be similar as well to be placed on the alveolar ridge of a maxillary or on the mucosa of a maxillary or mandibular arch, or even on the teeth still present on this arch. The management cheek notches 5 specified above is a common direction in surgical practice. Other possible directions, that is to say the palatal direction, the maxilla and the lingual direction in the mandible, are not described due to lack of light operating ease of the usual anatomical obstacles recognized by practitioners ( eg language or palate plate).

The invention therefore embraces all possible variants of which do not go beyond the scope defined by the claims below.

Claims

1) guiding device (1) of implant drill (2), of the type placed astride a maxillary or mandibular arch, comprising at least a pipe carrier (6) arranged in at least one bore (4) of substantially vertical axis (ZZ ') of a template (3) and at least one drilling barrel (7) removable, adapted to axially guide said drill (2), and inserted into said barrel holder (6), characterized in that said pipe carrier (6) is of the general form of a ring (6) having a slot (8) in an axial direction opposite a notch (5) substantially vertically to said template (3) extending in a substantially horizontal direction, and in that the width of said slot (8) and the width of said notch (5) are substantially less than the transverse dimension of said ring (6) while being greater than the diameter of said drill bit (2 ).
2) guiding device (1) of implant drill (2) according to Claim 1, characterized in that the width of said slot (8) and the width of said notch (5) are greater than the diameter of a type of implant predetermined.
3) guiding device (1) of implant drill (2) according to any one of claims 1 or 2, characterized in that said ring (6) is annular in shape and the outer surface of said barrel (7) is shaped cylindrical.
4) A guide device (1) of implant drill (2) according to any one of claims 1 to 3, characterized in that said ring (6) externally comprises at least one fin or longitudinal rib (14,15).
5) guiding device (1) of implant drill (2) according to claim 4, characterized in that said rib (14) extends radially. 6) guiding device (1) of implant drill (2) according to claim 4, characterized in that said fin (15) extends in a plane tangential to said ring (6) from a straight edge of said slot (8).
7) the guide device (1) of implant drill (2) according to any one of claims 1 to 6 précédentes-, characterized in that the portion of said barrel (7) external to said template (3) comprises an external shoulder (9 ), in a radial direction, cooperating with a circular edge vis-à-vis said ring (-6).
8) A guide device (1) drill implant (2) according to any one of claims 1 to 7, characterized in that the portion of said barrel (7) internal to said template (3) comprises an internal shoulder (10) in a radial direction, cooperating with the circular edge vis-à-vis said bore (4).
9) guiding device (1) of implant drill (2) according to any one of claims 1 to 8, characterized in that the portion of said barrel (7) external to said template (3) is provided with a web ( 11) extending in a substantially radial direction.
10) guide device (1) of implant drill (2) according to Claim 9, characterized in that said web (11) comprises an indication of the internal diameter of said barrel (7).
11) guide device (1) of implant drill (2) according to any one of claims 1 to 10, characterized in that the outer surface (12) of said barrel (7) has an indication of the size of said holder barrel (6).
12) guide device (1) of implant drill (2) according to any one of claims 1 to 11, characterized in that the width of said slot (8) and the width of said notch (5) minus the value of a functional game are selected from the group of values: 3.4 mm, 3.75 mm, 4.00 mm, 4.2 mm, 5.0 mm, 6.00 mm.
13) A method of laying an axial implant in the bone of a maxillary or mandibular arch of a patient employing the guide device (1) of implant drill (2) according to any one of claims 1 to 12 preceding.
14) A method of laying an axial implant according to claim 13 comprising the steps of: a) placing said guide device (1) riding on said bridge; b) axial engagement of a drilling tube (7) fitted on one implant drill (2) of predetermined diameter, previously mounted on a drill holder; c) lateral engagement with said notch (5) and said slot (8) a portion of said drill bit (2) left exposed by said drilling tube (7); d) axial engagement of said drilling tube (7) in said holder barrel (6) by axial displacement along said drill bit (2); e) a drilling in the bone for receiving said implant; f) lateral disengagement by said slot (8) and said slot (5) of the portion of said drill bit (2) left exposed by said drilling tube (7).
15) A method of laying an axial implant according to claim 14 further comprising a lateral engagement step of said implant mounted on a holder implant in said notch (5) and said slot (8) before screwing in said well the bone.
PCT/FR2007/000274 2006-03-15 2007-02-15 Device for guiding an implant drill, and method for fitting an axial implant using this device WO2007104842A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR0602269A FR2898485B1 (en) 2006-03-15 2006-03-15 Device for guiding an implant drill
FR0602269 2006-03-15

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