• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A substantially tubular first pass through fastener (1) for attaching a denture to a tooth implant or a dental tool on a dental implant or a dental implant analog, extending in a manner first longitudinal axis between a first end (1a) and a second end (1b). Each end (1a, 1b) is provided with an assembly (8, 9) of longitudinal fins (8a-8c; 9a-9c) for snapping into the dental prosthetic component or dental tool of a part, and in the dental implant on the other hand.
    公开号:FR3062053A1
    申请号:FR1750658
    申请日:2017-01-26
    公开日:2018-07-27
    发明作者:Herve Richard
    申请人:Anthogyr SA；
    IPC主号:
    专利说明:

    © Agent (s): CABINET PONCET.
    FR 3 062 053 - A1 © INTERMEDIATE FIXING PART.
    ©) Intermediate fixing piece (1) substantially tubular with first through passage (2) for fixing a screwed dental prosthetic component or a dental tool on a dental implant or on a dental implant analog, extending along a first longitudinal axis between a first end (1a) and a second end (1b). Each end (1a, 1b) is provided with a set (8, 9) of longitudinal fins (8a-8c; 9a-9c) intended to snap into the dental prosthetic component or into the dental tool of a on the other hand, and in the dental implant.

    7054FDEP.docx
    The present invention relates to the field of dental prosthetic restoration, and more particularly relates to an intermediate fixing part for fixing a screwed dental prosthetic component or a dental tool to a dental implant or to a dental implant analog.
    The dental prosthetic components to handle during a dental prosthetic restoration have very small sizes which induce high risks of loss or swallowing by the patient.
    In order to reduce these risks, it has been imagined to secure at least precariously the dental prosthetic component or components on a dental implant, for example by means of the intermediate fixing part described in document US Pat. No. 8,033,826 B2.
    This intermediate fixing piece, substantially tubular with a first through passage, extends along a first longitudinal axis between a first end and a second end. The first end comprises a first set of longitudinal fins, each of these longitudinal fins having a free distal portion radially and resiliently movable relative to the first longitudinal axis to engage by snap-fastening in the dental prosthetic component. The second end comprises a second set of longitudinal fins, each of these longitudinal fins having a free distal portion radially and resiliently movable relative to the first longitudinal axis to engage by snap-fastening in the dental implant.
    This intermediate fixing piece provides precarious snap-fastening between the dental implant and the dental component, while the practitioner brings back a fixing screw intended to better immobilize the dental component on the dental implant.
    With regard to snap-fastening, the fins must have, in the axial direction of elongation of the intermediate fixing part, a sufficient length to facilitate their bending in order to radially move their free ends (or distal parts) together. towards others. If the fins have a too short length, the radial displacement of the free ends of the fins towards each other requires too much axial force making the locking uncomfortable, even impossible. It follows that, to function properly, this intermediate fixing part necessarily has a large axial size.
    Such axial bulk is a constraint, which limits the structural designs of the dental implant and of the dental prosthetic component.
    7054FDEP.docx
    A problem proposed by the present invention is to provide an intermediate fixing piece which both facilitates the manipulation of practitioners (prosthetist and dental surgeon) during a dental prosthetic restoration, facilitates the manipulation of the dental implant, and limits the risk of loss or swallowing of dental prosthetic components or dental tools.
    Simultaneously, the present invention aims to reduce the stresses in the structural designs of the dental implant and of the dental prosthetic component.
    To achieve these and other objects, the invention provides an intermediate piece of substantially tubular fixing with a first through passage for fixing a dental prosthetic component or a dental tool on a dental implant or on a similar material. dental implant, extending along a first longitudinal axis between a first end and a second end, in which:
    - the first end comprises a first set of longitudinal fins, each longitudinal fin comprising a free distal part radially movable in an elastic manner to engage by snap-fastening in the dental prosthetic component or in the dental tool,
    - The second end comprises a second set of longitudinal fins, each longitudinal fin having a free distal portion radially movable in an elastic manner to engage by snap-fastening in the dental implant;
    according to the invention, the first and second sets of longitudinal fins are defined by a plurality of longitudinal slots extending over only part of the length of the intermediate fixing part and originating alternately from the first end and from the second end, said slots extending along the same intermediate axial section of the intermediate fixing part.
    The slots defining the first and second sets of longitudinal fins, all extending along the same intermediate axial section of the intermediate fixing piece, make it possible to effectively limit the axial size of the fixing piece while providing easy snap-ins. Indeed, the longitudinal fins of the first and second sets have an overlap along their length. This overlap allows a sufficient length of the longitudinal fins for easy snapping in, while providing a reduced axial size of the intermediate fixing part. This reduced axial size facilitates the manipulations of the practitioners and reduces the
    7054FDEP.docx constraints in the structural designs of the dental implant and the dental prosthetic component.
    According to another aspect, the present invention provides an assembly comprising:
    - an intermediate fixing part as described above,
    - a dental implant extending along a second longitudinal axis between a proximal end and a distal end, with internal connection housing extending from the distal end and in the direction of the proximal end and comprising an internally threaded proximal section,
    - a fixing screw comprising a screw head from which extends a screw rod provided with a threaded section intended to be received by screwing in the proximally internally threaded section of the dental implant, and in which the interior housing of connection comprises a first groove, formed between the proximal section internally threaded and the distal end of the dental implant, and intended to receive by snap-fastening the free distal parts of the fins of the second set of longitudinal fins.
    In a first embodiment, it can be provided that the labeling of the free distal parts of the fins of the second set of longitudinal fins is irreversible. The risks of untimely separation of the intermediate attachment piece and the dental implant are thus reduced.
    In a second embodiment, it can be provided that the labeling of the free distal parts of the fins of the second set of longitudinal fins is reversible. The intermediate attachment piece can then be removed from the dental implant if necessary.
    Advantageously, the internally threaded proximal section of the dental implant can be constituted by an internally threaded insert, attached and indexed in rotation in the interior connection housing. The dental implant can thus include an internal connection housing which is very simple and quick to machine, which limits the costs of manufacturing the dental implant. In addition, this limits the risks of an internal thread inducing risks of crack initiation in the dental implant. This is particularly useful in the case of a ceramic dental implant whose hardness makes machining difficult and which is sensitive to the risk of crack initiation.
    Advantageously, the second end of the intermediate fixing piece and the internally threaded insert can be shaped so that, when the internally threaded insert bears axially against the second end of the intermediate fixing piece, this support is opposed to a withdrawal from the
    7054FDEP.ÜOCX second end of the intermediate fixing part outside the first groove. The intermediate fixing part and the dental implant are thus made inseparable in a simple manner using the fixing screw.
    Preferably, a relative movement in translation of the internally threaded insert towards the distal end of the dental implant along the second longitudinal axis can cause radial expansion of the second end of the intermediate fixing piece. It is thus possible to increase the retention of the intermediate attachment piece in the dental implant beyond the retention provided by the ratchet in the case where the latter only partially penetrates the free distal parts of the longitudinal fins of the second set of 'longitudinal fins in the first groove.
    Advantageously, it can be provided that:
    - The assembly includes a dental prosthetic component comprising a second through passage constituted by first and second successive passage sections, said first passage section extending from a proximal end of the dental prosthetic component along a third longitudinal axis, and said second passage section extending the first passage section,
    - The first passage section has a second groove intended to receive by snap-fitting the free distal parts of the fins of the first set of longitudinal fins.
    The axial space requirement of the intermediate fixing piece being reduced, the length of the first passage section can be reduced and can thus leave the designer of the dental prosthetic component more free in the structural definition of the second passage section, in particular in its orientation.
    Advantageously, provision may be made for the first end of the intermediate fixing piece and the head of the fixing screw to be shaped so that, when the head of the fixing screw is axially bearing against the first end of the intermediate fixing piece. fixing, this support is opposed to a withdrawal of the first end of the intermediate fixing part from the second groove.
    There is thus no need to provide a screw seat in the dental prosthetic component, this seat being provided by the first end of the intermediate fixing part. The length required for the first passage section is thus further reduced.
    Preferably, it is possible to provide that a relative displacement in translation of the head of the fixing screw towards the proximal end of the dental implant along the second longitudinal axis causes a radial expansion of the first
    7054FDEP.docx end of the intermediate fixing piece. It is thus possible to increase the retention of the intermediate fixing part in the dental prosthetic component beyond the retention provided by the snap-in in the case where the latter only partially penetrates the free distal parts of the longitudinal fins of the first set of fins. longitudinal in the second groove.
    Advantageously, the second groove and / or the first end of the intermediate fixing part have respective contact surfaces shaped so that the radial expansion of the first end of the intermediate fixing part induces an axial pressing along the second longitudinal axis. from the proximal end of the dental prosthetic component to the distal end of the dental implant. Such axial pressing effectively limits the risks of bacteria entering and growing at the interfaces between the dental prosthetic component and the dental implant (and any intermediate components).
    Preferably, it can be provided that:
    - The first passage section of the dental prosthetic component has transverse dimensions allowing the reception of the first end of the intermediate fixing piece and of the screw head by axial penetration along the third longitudinal axis from the proximal end of the dental prosthetic component ,
    - The second passage section of the dental prosthetic component has transverse dimensions smaller than those of the first passage section, but sufficient for the passage of a tool allowing the fixing screw to rotate along the third longitudinal axis.
    The fixing screw can thus be partially screwed in by the practitioner before the latter attaches the dental prosthetic component by snap-fastening onto the dental implant and screws the fixing screw completely to better immobilize the dental prosthetic component on the dental implant. The risk of the patient losing or swallowing the fixation screw is thus effectively reduced.
    Simultaneously, the fixing screw is not inserted through the dental prosthetic component by successively passing through the second passage section and then the first passage section. The transverse dimensions of the second passage section can thus be reduced since only the passage of the screwing tool remains necessary, and this tool can have a transverse dimension much smaller than that of the head of the fixing screw. This limits the removal of material practiced in the dental prosthetic component for
    7054FDEP.docx spare the second passage section. The risks of weakening the mechanical strength of the dental prosthetic component are thus reduced.
    Advantageously, the first and second passage sections can form a non-zero angle between them.
    The angled nature of the second through passage makes it possible to have the coronary emergence of the access shaft away from the active parts of the dental prosthetic component during chewing (cusps), in particular when the dental prosthetic component is:
    - a dental prosthesis core having an outer shape substantially in the form of a tooth, made of metal or ceramic, or
    - A ceramic block of substantially cylindrical or prismatic exterior shape and intended to be machined to obtain an exterior shape substantially in the form of a tooth.
    Preferably, the dental prosthetic component may include a proximal end shaped to bear directly against the distal end of the dental implant. This limits the number of components. In the case of a ceramic dental prosthetic component, it is advantageously possible to have recourse to a dental implant also made of ceramic, in order to obtain a ceramic-on-ceramic contact avoiding phenomena of premature wear of the dental implant.
    Advantageously, the assembly may include means for indexing in rotation the dental prosthetic component and the dental implant around the second longitudinal axis.
    The intermediate fixing piece of the present invention can make it possible to attach and fix to a dental implant, sometimes only in a precarious manner:
    - a dental prosthetic component of the dental abutment type,
    - or a dental prosthesis core having an outer shape substantially in the form of a tooth, made of metal or ceramic,
    - or a ceramic block of substantially cylindrical or prismatic external shape and intended to be machined to obtain an external shape substantially in the form of a tooth,
    - or a dental tool of the impression transfer type, implant holder, intraoral scanning body, healing cap or obturation cap, said dental tool extending along a fourth longitudinal axis and comprising an internal bore provided with 'A third groove intended to receive by snap-fitting the free distal parts of the fins of the first set of longitudinal fins.
    7054FDEP.docx
    According to another aspect, the present invention provides an assembly comprising:
    - an intermediate fixing part as previously described,
    - a dental implant analog extending along a fifth longitudinal axis between a proximal end and a distal end, with internal connection housing extending from the distal end and towards the proximal end, which internal housing of connection comprises a fourth groove intended to receive by snap-fastening the free distal parts of the fins of the second set of longitudinal fins.
    Preferably, means are provided for indexing in rotation the dental tool or the analog of a dental implant around the fourth axis or the fifth longitudinal axis.
    Other objects, characteristics and advantages of the present invention will emerge from the following description of particular embodiments, given in relation to the attached figures, among which:
    - Figure 1 is a perspective view of a first particular embodiment of the intermediate fixing part according to the invention;
    - Figure 2 is a side view of the intermediate fixing part of Figure 1;
    - Figure 3 is a longitudinal sectional view of a particular embodiment of the first assembly according to the invention, comprising a dental implant and the intermediate fixing part of Figure 1;
    - Figure 4 is a perspective view of an internally threaded insert used in the context of the first assembly of Figure 3;
    - Figure 5 is a cross-sectional view of the first assembly of Figure 3;
    - Figure 6 is a longitudinal sectional view of a dental prosthetic component of the dental prosthesis type having an outer shape substantially in the form of a tooth, of metal or ceramic;
    - Figure 7 is a longitudinal sectional view of a particular embodiment of the first assembly according to the invention with the dental prosthetic component of Figure 6;
    - Figure 8 is a perspective view of the first assembly of Figure 3 with a dental prosthetic component of the dental pillar type;
    - Figure 9 is a longitudinal sectional view of the first assembly of Figure 8;
    - Figure 10 is a perspective view of the first set of Figure 3 with a dental tool of the implant holder type;
    7054FDEP.düCx
    - Figure 11 is a longitudinal sectional view of the first assembly of Figure 10;
    - Figure 12 is a perspective view of the first set of Figure 3 with a dental tool of the healing cap type;
    - Figure 13 is a longitudinal sectional view of the first assembly of Figure 12;
    - Figure 14 is a perspective view of the first set of Figure 3 with a dental tool of the closure cap type;
    - Figure 15 is a longitudinal sectional view of the first set of Figure 14;
    FIG. 16 is a perspective view of the first assembly in FIG. 3 with a dental tool of the intraoral scanning body type;
    - Figure 17 is a longitudinal sectional view of the first set of Figure 16;
    - Figure 18 is a perspective view in longitudinal section of the first set of Figure 3 with a dental tool of the impression transfer type;
    - Figure 19 is a side view of a second particular embodiment of the intermediate fixing part according to the invention;
    - Figure 20 is a partial view in longitudinal section of a first assembly according to the invention, comprising a dental implant and the intermediate fixing part of Figure 19;
    - Figure 21 is a longitudinal sectional view of a variant of dental implant intended to be combined with the intermediate fixing parts of Figures 1 or 19 to form a variant of the first set according to the invention; and
    - Figure 22 is a longitudinal sectional view of a dental implant analog intended to be combined with the intermediate fixing parts of Figures 1 or 19 to form a second set according to the invention.
    In Figures 1 and 2 is illustrated a first particular embodiment of the intermediate fixing part 1 according to the invention.
    This intermediate fixing part 1 is substantially tubular with a first through passage 2 allowing the passage of a threaded element such as a fixing screw 3 (FIG. 3) for fixing a dental prosthetic component 4 screwed (FIGS. 7 and 9 ) or a dental tool 5 (Figures 11, 13, 15, 17 and 18) on a dental implant 6 or on an analog 7 of a dental implant.
    The intermediate fixing part 1 extends along a first longitudinal axis l-l between a first end 1a and a second end 1b.
    7054FDEP.ÜOCX
    The first end 1a comprises a first set 8 of longitudinal fins 8a to 8c, each longitudinal fin 8a to 8c comprising a free distal part 80a to 80c radially movable in elastic manner relative to the first longitudinal axis ll to engage by snap-fastening into the dental prosthetic component 4 or in the dental tool 5.
    The second end 1b comprises a second set 9 of longitudinal fins 9a to 9c, each longitudinal fin 9a to 9c comprising a free distal part 90a to 90c radially resiliently movable relative to the first longitudinal axis ll to engage by snap-fastening into the dental implant 6.
    The first 8 and second 9 sets of longitudinal fins 8a-8c and 9a-9c are defined by a plurality of longitudinal slots F1 to F6 each extending over only part of the length of the intermediate fixing part 1 and originating alternately from the first end 1a (slots F1 to F3) and from the second end 1b (slots F4 to F6). The slots F1 to F6 all extend along the same intermediate axial section 10 of the intermediate fixing part 1.
    In Figure 3 is illustrated a particular embodiment of the first set E1 according to the invention, comprising a dental implant 6 and the intermediate fixing part 1 of Figures 1 and 2.
    The dental implant 6 extends along a second longitudinal axis II-II between a proximal end 6a and a distal end 6b. It comprises an internal connection housing 12 extending from the distal end 6b and in the direction of the proximal end 6a, and comprising a proximal section 13 internally threaded.
    The first assembly E1 also comprises a fixing screw 3 comprising a screw head 14 from which extends a screw rod 15 provided with a threaded section 16 intended to be received by screwing in the proximal section 13 internally threaded from the dental implant 6.
    The internal connection housing 12 comprises a first groove 17, formed between the proximal section 13 internally threaded and the distal end 6b of the dental implant 6, and intended to receive by snap-fastening the free distal parts 90a to 90c of the longitudinal fins 9a at 9c.
    The labeling of the free distal parts 90a to 90c of the longitudinal fins 9a to 9c is reversible. To do this, use is made of a frustoconical distal section 17b of the first groove 17 shaped so as to induce a displacement (approximation) of the free distal parts 90a to 90c of the fins
    7054FDEP.docx longitudinal 9a to 9c towards the first longitudinal axis l-l when it is applied a traction of the intermediate fixing piece 1 along the first longitudinal axis l-l away from the proximal end 6a of the dental implant 6.
    It is noted that the free distal parts 90a to 90c of the longitudinal fins 9a to 9c have a contact surface 18 substantially frustoconical. This substantially frustoconical contact surface 18 is substantially complementary to the frustoconical distal section 17b of the first groove 17, to ensure surface contact providing a good distribution of forces between the intermediate fixing part 1 and the dental implant 6 when a axial force along the first longitudinal axis ll tending to extract the intermediate fixing part 1 from the dental implant 6.
    It can be seen more particularly in FIG. 3 that the proximal section 13 internally threaded of the dental implant 6 is constituted by an internally threaded insert 19, attached and indexed in rotation in the internal connection housing 12.
    The internally threaded insert 19 is better represented in FIG. 4. This comprises a proximal section 19a with a cross section of non-circular shape and intended to penetrate an end section 12a of the internal connection housing 12. The section d end 12a also has a non-circular cross-sectional shape in which is inscribed the non-circular cross-sectional shape of the proximal section 19a, as is more particularly visible in FIG. 5. The end section 12a and the proximal section 19a cooperate, due to their non-circular cross-sectional shapes, to index in rotation the internally threaded insert 19 in the internal connection housing 12 along the first longitudinal axis ll. This cooperation allows the screwing (unscrewing) of the fixing screw 3 into (out of) the internally threaded insert 19.
    The internally threaded insert 19 is held captive in the internal connection housing 12 when the intermediate fixing part 1 is snapped into the dental implant 6.
    Note in Figure 4 that the internally threaded insert 19 has a distal section 19b having a frustoconical side surface 190b. On the side of the intermediate fixing piece 1, the free distal parts 90a to 90c of the longitudinal fins 9a to 9c comprise a seat substantially conical and substantially complementary adapted to receive in support the distal section 19a (being substantially complementary to provide support surface).
    7054FDEP.docx
    When the internally threaded insert 19 bears axially against the second end 1b of the intermediate fixing part 1 (FIG. 7), this support is opposed to a withdrawal of the second end 1b of the intermediate fixing part 1 from the first groove 17: the free distal parts 90a to 90c of the longitudinal fins 9a to 9c can no longer move towards the first longitudinal axis 11 in order to escape from the first groove 17.
    In the case where, after latching of the free distal parts 90a to 90c in the first groove 17, the radial expansions of the free distal parts 90a to 90c only partially penetrate into the first groove 17 (so as to provide easier snap-fastening and separation of the intermediate fixing part 1 and of the dental implant 6), provision may be made for a relative displacement in translation of the internally threaded insert 19 towards the distal end 6b of the dental implant 6 along the second longitudinal axis ll-ll causes a radial expansion of the second end 1b of the intermediate fixing part 1. This increases the penetration of the radial expansions of the free distal parts 90a to 90c in the first groove 17 and thus increases the retention of the intermediate fixing part 1 in the dental implant 6.
    In FIG. 6 is illustrated a dental prosthetic component 4 of the dental prosthesis core type 21 having an outer shape substantially in the shape of a tooth. This dental prosthesis core 21 is made of metal or ceramic. When it is ceramic, it is obtained by machining a ceramic block or produced by sintering a ceramic powder, and can optionally be coated by the technician with one or more very light layers of texturing or coloring providing the closest aspect to a natural tooth.
    The dental prosthesis core 21 comprises a second through passage 22 constituted by first 22a and second 22b successive passage sections, said first passage section 22a extending from a proximal end 21a of the dental prosthesis core 21 according to a third longitudinal axis III-III, and said second passage section 22b extending the first passage section 22a.
    The first passage section 22a comprises a second groove 23 intended to receive by snap-fastening the free distal parts 80a to 80c of the longitudinal fins 8a to 8c of the first assembly 8.
    It can be seen more particularly in FIG. 7 that the first end 1a of the intermediate fixing part 1 and the head 14 of the fixing screw 3 are shaped so that, when the head 14 of the fixing screw 3 is in support
    7054FDEP.ilocx axially against the first end 1a of the intermediate fixing part 1, this support is opposed to a withdrawal of the first end 1a of the intermediate fixing part 1 from the second groove 23.
    More specifically, the intermediate fixing part 1 comprises, at its first end 1a, a substantially frustoconical seat 11 against which bears the frustoconical surface 14a provided under the screw head 14. The surface 14a and the frustoconical seat 11 are substantially complementary to provide surface support to distribute the forces.
    Here again, in the case where, after snap-fastening of the free distal parts 80a to 80c in the second groove 23, the radial openings of the free distal parts 80a to 80c only partially penetrate into the second groove 23 (so as to provide a snap and facilitated separation of the intermediate fixing piece 1 and the dental prosthesis core 21), provision may be made for a relative movement in translation of the head 14 of fixing screw 3 towards the proximal end 6a of the implant dental 6 along the second longitudinal axis ll-ll causes a radial expansion of the first end 1a of the intermediate fixing part 1. This increases the penetration of the radial openings of the free distal parts 80a to 80c in the second groove 23 and thus increases the retaining the intermediate fixing part 1 in the dental prosthesis core 21.
    More particularly, it can be seen in FIG. 2 that the first end 1a of the intermediate fixing part 1 has a substantially frustoconical contact surface 24. For its part, the second groove 23 has a frustoconical proximal section 23a (substantially complementary to the contact surface 24). When there is a radial expansion of the first end 1a of the intermediate fixing piece 1, this radial expansion induces along the second longitudinal axis ll-ll an axial pressing of the proximal end 21a of the dental prosthetic component 4 (the dental prosthesis core 21) towards the distal end 6b of the dental implant 6.
    The dental prosthesis core 21 moreover comprises a proximal end 21a shaped so as to bear directly in abutment against the distal end 6b of the dental implant 6. The axial pressing therefore makes it possible to ensure a seal between the core of dental prosthesis 21 and dental implant 6.
    Note in Figure 7 that the first passage section 22a of the dental prosthesis core 21 has transverse dimensions allowing the reception of the first end 1a of the intermediate fixing part 1 and the screw head 14 by axial penetration along the third longitudinal axis lll-lll
    7054FDEP.docx from the proximal end 21a of the dental prosthesis core 21. The second passage segment 22b of the dental prosthesis core 21 has transverse dimensions smaller than those of the first passage segment 22a, but sufficient for the passage of a tool for driving in rotation the fixing screw 5 along the second longitudinal axis ll-ll.
    It is more particularly visible in FIG. 6 that the first 22a and second 22b passage sections form a non-zero angle A between them.
    Indexing means make it possible to index the dental prosthesis core 21 and the dental implant 6 in rotation around the second longitudinal axis II10 II. In this case, the indexing means comprise a proximal housing 210a of non-circular cross section (here hexagonal) receiving, with little play, a hexagonal distal extension 25 of the dental implant 6.
    As an alternative to a dental prosthesis core 21 having a substantially tooth-shaped external shape, the dental prosthesis core 21 may be a ceramic block of substantially cylindrical or prismatic external shape and intended to be machined to obtain an external shape substantially tooth-shaped (as for example illustrated in documents KR 10-2013-0097820, US 2012/0251979 and EP 2 837 357).
    The intermediate fixing part 1 makes it possible to attach and fix to the dental implant 6 other types of dental prosthetic part 4. In FIGS. 8 and 9, the dental prosthetic component 4 is a dental abutment 26. Its internal configuration is similar to that of the dental prosthesis core 21, with a groove 26a receiving by snap-fastening the free distal parts 80a to 80c of the longitudinal fins 8a to 8c for precarious fixation. The fixing screw 3 makes it possible to fix the dental abutment 26 more securely on the dental implant 6 in the same way as the dental prosthesis core 21 by pressing on the second end 1b of the intermediate fixing part 1.
    The intermediate fixing piece 1 also makes it possible to attach and fix to the dental implant 6 one of a plurality of dental tools 5 (FIGS. 10 to 18). All of these dental tools 5 extend along a fourth longitudinal axis IV-IV and comprise an internal bore 32 provided with a third groove 33 intended to receive by snap-fastening the free distal parts 80a-80c of the longitudinal fins 8a-8c of the first set of fins 8.
    In FIGS. 10 and 11, the first set E1 comprises a dental tool 35 of the implant holder type 27. The locking of the longitudinal fins 8a8c in the third groove 33 provides only temporary and precarious fixation. A more robust fixing of the implant holder 27 is obtained by the fixing screw 3
    7054FDEP.docx bearing against a seat 34 provided in the implant holder 27. The implant holder 27 makes it possible to transport the dental implant 6 then to insert it by screwing into the bone of the patient's jaw using '' a dental handpiece.
    In FIGS. 12 and 13, the first set E1 comprises a dental tool 5 of the healing cap type 28. The locking of the longitudinal fins 8a-8c in the third groove 33 provides only temporary and precarious fixation. A more robust fixing of the healing cap 28 is obtained by the fixing screw 3 coming to bear sealingly against a seat 34 provided in the implant holder 27. The healing cap 28 has an asymmetrical shape making it possible to take account of the shape and height of the gum on the inside and outside of the dental arch. The healing cap 28 seals the dental implant 6 during the period of osteointegration of the dental implant 6 (to prevent the penetration of impurities into its internal connection housing 12), a period during which the healing will also occur. gum around dental implant 6 to properly cover the bone.
    In FIGS. 14 and 15, the first set E1 comprises a dental tool 5 of the closure cap type 29. The locking of the longitudinal fins 8a-8c in the third groove 33 provides only temporary and precarious fixation. There is no provision for a more robust attachment here. The closure cap 29 has a symmetrical shape and makes it possible to temporarily seal the dental implant 6 in a sealed manner to prevent the penetration of impurities into its internal connection housing 12.
    In FIGS. 16 and 17, the first set E1 comprises a dental tool 5 of the intraoral scanning body type 30. The locking of the longitudinal fins 8a-8c in the third groove 33 provides only temporary and precarious fixation. A more robust fixation of the intraoral scanning body 30 is obtained by the fixing screw 3 bearing against a seat 34 provided in the intraoral scanning body 30. The intraoral scanning body 30 has an asymmetrical shape (by means of a flat) and is indexed in rotation on the dental implant 6 by a proximal housing 30a of non-circular cross section (hexagonal here) cooperating with the distal extension 25 of non-circular cross section (also hexagonal here) of the dental implant 6. The intraoral scanning body 30 makes it possible to identify the position and the orientation of the dental implant 6 in the jaw bone of the patient in order to provide suitable dental prosthetic components intended to be attached and fixed on the dental implant 6.
    7054FDEP.docx
    In FIG. 18, the first set E1 comprises a dental tool 5 of the impression transfer type 31 (sometimes called "pick-up transfer"). The locking of the longitudinal fins 8a-8c in the third groove 33 provides only temporary and precarious fixing. A more robust fixing of the impression transfer 31 is obtained by the fixing screw 3 bearing against a seat 34 provided in the impression transfer 31. The impression transfer 31 has an asymmetrical shape and is indexed in rotation on the dental implant 6 by a proximal housing 31a of non-circular cross section (hexagonal here) cooperating with the distal extension 25 of non-circular cross section (also hexagonal here) of the dental implant 6. The impression transfer 31 makes it possible to identify the position and orientation of the dental implant 6 in the patient's jaw bone to then manufacture a master model (generally made of plaster) allowing the dental technician to provide suitable dental prosthetic components intended to be attached and fixed on the dental implant 6.
    Thanks to the at least precarious fixing provided by the intermediate fixing part 1, the manipulations of the practitioners (prosthetist and dental surgeon) are facilitated during a dental prosthetic restoration, due to the constitution of assemblies or sub-assemblies facilitating transport (of the dental implant 6 in particular) and limiting the risk of loss or swallowing of dental prosthetic components 4 or dental tools 5, in particular before the fixing screw is placed in the dental implant 6 .
    In Figures 8 to 18, use is made of an intermediate fixing part 1 according to a second embodiment of the invention, more particularly visible in Figure 19. This intermediate fixing part 1 differs from that of Figures 1 and 2 in that the distal ends 90a to 90c have planar facets 35a to 35c substantially perpendicular to the first longitudinal axis ll and oriented towards the first end 1a. The facets 35a to 35c form a contact surface 35 substantially in the form of a crown.
    For its part, the first groove 17 in the dental implant 6 forms a shoulder 36 having a bearing face 37 perpendicular to the first longitudinal axis l-l and oriented towards the proximal end 6a of the dental implant 6 (Figure 20). The support face 37 is in the form of a circular crown.
    The contact surface 35 and the bearing face 37 provide an irreversible snap-fastening of the intermediate fixing part 1 in the dental implant 6. When the longitudinal fins 9a to 9c are snapped into the first groove 17 (see FIG. 20), the contact surface 35 substantially in the form of
    7054FDEP.docx crown and the support face 37 are in fact opposed to an extraction of the intermediate fixing part 1 from the dental implant 6.
    It can be seen in FIGS. 9, 11, 13, 15, 17 and 18 that when the intermediate fixing part 1 is snapped into the dental implant 6, the intermediate axial section 10 protrudes out of the dental implant 6 (the slots F4 to F6 indeed extend beyond the distal extension 25). Thus, in the case where it is necessary to extract the internally threaded insert 19, the intermediate fixing part 1 can be cut along a plane P perpendicular to the first longitudinal axis ll and intersecting the intermediate axial section 10. The fins 9a to 9c are then separated and can be removed from the dental implant 6.
    The protrusion of the intermediate axial section 10 outside the dental implant 6 is also present in the first embodiment (see figure
    3), which guarantees the possibility of extracting the intermediate fixing part 1 in the event that the practitioner fails to disengage the second end 1b from the first groove 17.
    In FIG. 21 is illustrated a variant of dental implant 6 intended to be combined with the intermediate fixing parts 1 of FIGS. 1 and 2 to form a variant of the first set E1 according to the invention. In this dental implant 6, no use is made of an internally threaded insert 19, the threaded proximal section 13 being formed directly in the side wall of the interior connection housing 12. It is observed that the first groove 17 has a section distal 17b frustoconical to allow a reversible snap-fastening of the intermediate fixing part 1. It can nevertheless be used as an alternative to a shoulder 36 as in FIG. 20, to ensure an irreversible snap-in.
    In FIG. 22 is illustrated an analog of dental implant 37 intended to receive an intermediate fixing part 1 to form a second set E2 according to the invention.
    The dental implant analog 7 extends along a fifth longitudinal axis VV between a proximal end 7a and a distal end 7b, and comprises an internal connection housing 38 extending from the distal end 7b and in the direction of the proximal end 7a. The internal connection housing 38 comprises a fourth groove 39 intended to receive by snap-fastening the free distal parts 90a to 90c of the longitudinal fins 9a to 9c of the second set of fins 9.
    The intermediate fixing piece 1 makes it possible to snap-fit, in a reversible manner, a dental prosthetic component 4 during its preparation by
    7054FDEP.docx successive placements on the analog of dental implant 7 contained in a master model. The reversible snap fastening is certainly precarious, but it is sufficient for the work of the technician, and it avoids having to use a fixing screw 3 which is always long to screw or unscrew.
    The present invention is not limited to the embodiments which have been explicitly described, but it includes the various variants and generalizations thereof contained in the field of claims below.
    7054FDEP.docx
    权利要求:
    Claims (21)
    [1" id="c-fr-0001]
    1 - Intermediate fixing part (1) substantially tubular with first through passage (2) for fixing a dental prosthetic component (4) or a dental tool (5) on a dental implant (6) or on a analog of a dental implant (7), extending along a first longitudinal axis (ll) between a first end (1a) and a second end (1b), in which:
    - The first end (1a) comprises a first set (8) of longitudinal fins (8a-8c), each longitudinal fin (8a-8c) comprising a free distal part (80a-80c) radially resiliently displaceable for s' snap into the dental prosthesis component (4) or into the dental tool (5),
    - The second end (1b) comprises a second set (9) of longitudinal fins (9a-9c), each longitudinal fin (9a-9c) comprising a free distal part (90a-90c) radially resiliently displaceable for s' snap-fit into the dental implant (6), characterized in that the first (8) and second (9) sets of longitudinal fins (80a-80c; 90a-90c) are defined by a plurality of longitudinal slots (F1 -F6) extending over only part of the length of the intermediate fixing part (1) and originating alternately from the first end (1a) and from the second end (1b), said slots (F1F6) s extending along the same intermediate axial section (10) of the intermediate fixing part (1).
    [2" id="c-fr-0002]
    2 - Set (E1) characterized in that it includes:
    - an intermediate fixing part (1) according to claim 1,
    - a dental implant (6) extending along a second longitudinal axis (ll-ll) between a proximal end (6a) and a distal end (6b), with internal connection housing (12) extending from the end distal (6b) and towards the proximal end (6a) and comprising a proximal section (13) internally threaded,
    - a fixing screw (3) comprising a screw head (14) from which extends a screw rod (15) provided with a threaded section (16) intended to be received by screwing in the proximal section (13) internally threaded of the dental implant (6), and in which the internal connection housing (12) has a first groove (17), formed between the proximal section (13) internally threaded and the distal end (6b) of the 'dental implant (6), and intended to receive by snap the free distal parts (90a-90c) of the fins (9a-9c) of the second set (9) of longitudinal fins (9a-9c).
    7054FDEP.docx
    [3" id="c-fr-0003]
    3 - assembly (E1) according to claim 2, characterized in that the latching of the free distal parts (90a-90c) of the fins (9a-9c) of the second set (9) of longitudinal fins (9a-9c) is irreversible.
    [4" id="c-fr-0004]
    4 - assembly (E1) according to claim 2, characterized in that the latching of the free distal parts (90a-90c) of the fins (9a-9c) of the second set (9) of longitudinal fins (9a-9c) is reversible.
    [5" id="c-fr-0005]
    5 - assembly (E1) according to any one of claims 2 to 4, characterized in that the proximal section (13) internally threaded of the dental implant (6) is constituted by an internally threaded insert (19) reported and indexed rotating in the internal connection housing (12).
    [6" id="c-fr-0006]
    6 - assembly (E1) according to claim 5, characterized in that the second end (1b) of the intermediate fixing part (1) and the internally threaded insert (19) are shaped so that when the threaded insert internally (19) bears axially against the second end (1b) of the intermediate fixing part (1), this support is opposed to a withdrawal of the second end (1b) of the intermediate fixing part (1) outside of the first groove (17).
    [7" id="c-fr-0007]
    7 - assembly (E1) according to one of claims 5 or 6, characterized in that a relative displacement in translation of the internally threaded insert (19) towards the distal end (6b) of the dental implant (6 ) along the second longitudinal axis (ll-ll) causes a radial expansion of the second end (1b) of the intermediate fixing part (1).
    [8" id="c-fr-0008]
    8 - assembly (E1) according to any one of claims 2 to 7, characterized in that:
    - It comprises a dental prosthetic component (4) comprising a second through passage (22) constituted by first (22a) and second (22b) successive passage sections, said first passage section (22a) extending from a proximal end (21a) of the dental prosthetic component (4) along a third longitudinal axis (III-III), and said second passage section (22b) extending the first passage section (22a),
    - The first passage section (22a) comprises a second groove (23) intended to receive by snap-fastening the free distal parts (80a-80c) of the fins (8a-8c) of the first set (8) of longitudinal fins (8a- 8c).
    [9" id="c-fr-0009]
    9 - assembly (E1) according to claim 8, characterized in that the first end (1a) of the intermediate fixing part (1) and the head (14) of the fixing screw (3) are shaped so that, when the head (14) of the fixing screw (3) bears axially against the first end (1a) of the part
    7054FDEP.docx intermediate fixing (1), this support is opposed to a withdrawal of the first end (1a) of the intermediate fixing part (1) out of the second groove (23).
    [10" id="c-fr-0010]
    10 - assembly (E1) according to one of claims 8 or 9, characterized in that a relative movement in translation of the head (14) of the fixing screw (3) towards the proximal end (6a) of the 'dental implant (6) along the second longitudinal axis (ll-ll) causes a radial expansion of the first end (1a) of the intermediate fixing part (1).
    [11" id="c-fr-0011]
    11 - assembly (E1) according to claim 10, characterized in that the second groove (23) and / or the first end (1a) of the intermediate fixing part (1) have respective contact surfaces shaped so that the radial expansion of the first end (1a) of the intermediate fixing piece (1) induces along the second longitudinal axis (ll-ll) an axial pressing of the proximal end (21a) of the dental prosthetic component (4) towards the distal end (6b) of the dental implant (6).
    [12" id="c-fr-0012]
    12 - assembly (E1) according to any one of claims 8 to 11, characterized in that:
    - The first passage section (22a) of the dental prosthetic component (4) has transverse dimensions allowing the reception of the first end (1a) of the intermediate fixing part (1) and of the screw head (14) by penetration axial along the third longitudinal axis (III-III) from the proximal end (21a) of the dental prosthetic component (4),
    - The second passage section (22b) of the dental prosthetic component (4) has transverse dimensions smaller than those of the first passage section (22a), but sufficient for the passage of a tool allowing the screw to be rotated. fixing (3) along the third longitudinal axis (lll-lll).
    [13" id="c-fr-0013]
    13 - assembly (E1) according to any one of claims 8 to 12, characterized in that the first (22a) and second (22b) passage sections form an angle (A) non-zero between them.
    [14" id="c-fr-0014]
    14 - assembly (E1) according to any one of claims 8 to 13, characterized in that the dental prosthetic component (4) comprises a proximal end (21a) shaped to bear directly against the distal end (6b) of the dental implant (6).
    [15" id="c-fr-0015]
    15 - assembly (E1) according to any one of claims 8 to 14, characterized in that it comprises means for indexing in rotation the dental prosthetic component (4) and the dental implant (6) around the second longitudinal axis (ll-ll).
    7054FDEP.docx
    [16" id="c-fr-0016]
    16 - assembly (E1) according to any one of claims 8 to 15, characterized in that the dental prosthetic component (4) is a dental prosthesis core (21) having an outer shape substantially in the form of a tooth, made of metal or ceramic.
    [17" id="c-fr-0017]
    17 - assembly (E1) according to any one of claims 8 to 15, characterized in that the dental prosthetic component (4) is a ceramic block of substantially cylindrical or prismatic external shape and intended to be machined to obtain an external shape substantially tooth-shaped.
    [18" id="c-fr-0018]
    18 - assembly (E1) according to any one of claims 8 to 15, characterized in that the dental prosthetic component (4) is a dental abutment (26).
    [19" id="c-fr-0019]
    19 - assembly (E1) according to any one of claims 8 to 15, further comprising a dental tool (5) of the impression transfer type (31), implant holder (27), intraoral scanning body (30) , healing cap (28) or obturation cap (29), said dental tool (5) extending along a fourth longitudinal axis (IV-IV) and comprising an internal bore (32) provided with a third groove ( 33) intended to receive by snap-on the free distal parts (80a-80c) of the fins (8a-8c) of the first set (8) of longitudinal fins (8a8c).
    [20" id="c-fr-0020]
    20 - Set (E2) characterized in that it includes:
    - an intermediate fixing part (1) according to claim 1,
    - a dental implant analog (7) extending along a fifth longitudinal axis (VV) between a proximal end (7a) and a distal end (7b), with internal connection housing (38) extending from the distal end (7b) and towards the proximal end (7a), which internal connection housing (38) has a fourth groove (39) intended to receive by snap-on the free distal parts (90a-90c) of the fins (9a -9c) of the second set of longitudinal fins (9).
    [21" id="c-fr-0021]
    21 - assembly (E1, E2) according to one of claims 19 or 20, characterized in that it comprises means for indexing in rotation the dental tool (5) or the analog of dental implant ( 7) around the fourth (IV-IV) or the fifth (VV) longitudinal axis.
    1/14
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    同族专利:
    公开号 | 公开日
    EP3573569A1|2019-12-04|
    US11207160B2|2021-12-28|
    FR3062053B1|2021-07-16|
    US20190365510A1|2019-12-05|
    BR112019015356A2|2020-03-10|
    WO2018138633A1|2018-08-02|
    EP3573569B1|2020-12-09|
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    FR3062053B1|2017-01-26|2021-07-16|Anthogyr Sa|INTERMEDIATE FIXING PART|WO2018104928A1|2016-12-07|2018-06-14|Bendat Jacob|Adaptor system for dental prosthesis|
    FR3062052B1|2017-01-26|2021-07-16|Anthogyr Sa|SET OF COMPONENTS FOR DENTAL PROTHETIC RESTORATION|
    FR3062053B1|2017-01-26|2021-07-16|Anthogyr Sa|INTERMEDIATE FIXING PART|
    法律状态:
    2017-12-13| PLFP| Fee payment|Year of fee payment: 2 |
    2018-07-27| PLSC| Publication of the preliminary search report|Effective date: 20180727 |
    2020-01-21| PLFP| Fee payment|Year of fee payment: 4 |
    2021-01-21| PLFP| Fee payment|Year of fee payment: 5 |
    2022-01-19| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1750658A|FR3062053B1|2017-01-26|2017-01-26|INTERMEDIATE FIXING PART|
    FR1750658|2017-01-26|FR1750658A| FR3062053B1|2017-01-26|2017-01-26|INTERMEDIATE FIXING PART|
    US16/476,580| US11207160B2|2017-01-26|2018-01-23|Intermediate attachment part|
    EP18702821.2A| EP3573569B1|2017-01-26|2018-01-23|Intermediate attachment part|
    BR112019015356-0A| BR112019015356A2|2017-01-26|2018-01-23|INTERMEDIATE FIXING PIECE|
    PCT/IB2018/050401| WO2018138633A1|2017-01-26|2018-01-23|Intermediate attachment part|
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