• 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:
    Planning and milling guide for dental implants. As the title indicates, the object of the present invention is a planning and milling guide for the subsequent placement of dental implants, especially indicated in cases in which it is necessary to perform angulated perforations in the bone bed from a first vertical hole already realized, and which basically comprises a support (1), a plate (2) with an angle in at least one of its ends fastened on the support (1) removably and movably with respect to it, a guiding body (3) ) located at the end of the plate (2) and a rod (4) which in turn comprises an upper end that is joined to the support (2) through turning means (5) that allow relative movement between them, and a lower end that is inserted into the bone bed of the patient's mouth. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2575509A1
    申请号:ES201431942
    申请日:2014-12-29
    公开日:2016-06-29
    发明作者:Francesc Alsina Font；Antonio LÓPEZ PÉREZ
    申请人:Phibo Dental Solutions SL；
    IPC主号:
    专利说明:

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    DESCRIPTION
    Gwa of planning and milling for dental implants Object of the invention
    The object of the present invention is a milling planning guide for the subsequent placement of dental implants.
    More specifically, the milling guide of the invention is intended to plan and guide the milling of the bone bed of a partial or total patient in which it is necessary to guide both in depth and in angulation.
    Background of the invention
    Currently implantology techniques allow the replacement of dental roots by implants, which in turn are coupled with the corresponding prostheses or artificial teeth.
    The most widely used techniques today are of special application when the patient only needs to replace or replace any dental part of his denture.
    However, there are patients who have their lower jaw, upper or both completely toothless, either naturally or after the extraction of all dental pieces has been necessary. In these cases, the replacement of each of these pieces by artificial implants becomes a complicated and laborious task that, in addition to very annoying and considerable duration over time, which leads to numerous and obvious discomfort to the patient, is a high cost due both to the hours spent by the surgeon and to the numerous material used.
    To this end, several years ago different techniques appeared for the rehabilitation of edentulous patients consisting of replacing all the pieces, usually 12 or 14, of the maxillary toothpaste only by placing four implants in the area
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    anterior of the maxilla, where bone density is higher and therefore osseointegration has greater guarantees of success.
    Two of the four necessary implants are placed vertically and the other two inclined, specifically those placed at the back, that is, at a certain angle to the vertical. This is because the edentulous patients have normally suffered a loss of bone that does not make it possible to place implants vertically in sufficient length to obtain a minimum osseointegration that guarantees the prosthesis load and is necessary angular to be able to place a larger implant. length.
    As an example, two of the best known, commercially called All-on-4® or Columbus Bridge Protocol ™ can be cited.
    The advantages of this treatment with respect to the use of an implant for each of the dental pieces to be replaced are evident, since the need for fewer implants reduces the discomfort for the patient, reduces the time and stress of the surgery, the time total treatment and also the cost, to which we must add the psychological benefit of enjoying a new denture.
    This inclination at the time of performing the milling of the bone bed makes it necessary for the surgeon to have some guiding element that allows him to orient the drill or drill in the most exact way possible.
    For this reason, for example, in the All-on-4® technique, a guide consisting of a thin metal plate of considerable length and small height is used at which a mast or rod of reduced diameter is attached at its central point. This rod will be introduced in a small hole made by the surgeon at the central point of the anterior part of the patient's jaw so that, once introduced, the metal plate can be combined or molded to adapt to the contour of the patient's bone crest .
    Said plate also has a series of vertical marks distributed uniformly throughout its length that allow, when performing angled milling, that the surgeon
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    It can have a reference of the inclination of the strawberry taking as reference the diagonal between the marks.
    This technique, however, has notable drawbacks. In the first place, it is possible to mention the little accuracy that it provides, because although the surgeon can guide the milling taking as reference the vertical marks of the plate, said milling will still depend on the ability of said surgeon to first perform the milling with the angle adequate and then maintain the inclination during said milling. In addition, there is a high risk of an involuntary movement of both the milling cutter and the plate itself, which in the case of the latter tends to rotate on the vertical axis that constitutes its stem, which causes that the milling is not perform with the appropriate inclination.
    Second, there is the inconvenience of having to perform an additional drill, however small, in the patient's mouth, which is a nuisance added to the stress of the surgery.
    Finally, another of the drawbacks of this solution is that the milling depth is not controlled, making prior planning on the model difficult before surgery.
    In the state of the art there are examples of guides for the realization of the milling of the bone bed of a patient in order to subsequently place a dental implant, either if it is the first milling, as for example in US6062856, as if there is already a What is desired in the first hole is to make others located at a certain distance or in a certain disposition with respect to said first hole. Examples of the latter case can be seen, for example, in US5741133, US8821159 or WO200134055.
    However, the guides shown in these documents do not present the possibility of guiding milling in angulation, so they would not be useful for this purpose.
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    Description of the invention
    The planning and milling gwa for dental implants of the present invention solves the aforementioned problems of the state of the art and constitutes a simple, versatile, adaptable and reusable handling tool that guides the milling of the patient's bone bed both in angulation as in depth without having to perform an additional drilling that will not be used later as a hole for the corresponding implant.
    For this, the milling guide of the invention comprises:
    - A support;
    - An interchangeable plate fastened on the support that is movable and detachable with respect to it, where said plate comprises an angulation at least one of its ends, where it comprises a guide body for the drill or drill responsible for drilling the bone bed with appropriate angulation and depth.
    - A rod whose upper end is articulated to the support articulated through means of rotation that allow a relative displacement between both parts and where the lower end of said rod is the one that is introduced into the bone bed of the patient's mouth, being immobilized in it thanks to retention means.
    Thus, once a first perforation of those that do not need angulation has been performed, that is, a vertical hole in the bone bed located in the anterior part of the patient's mouth, then the surgeon introduces the stem of the milling guide of the invention in said vertical hole.
    Previously, of course, said surgeon will have selected the appropriate plate, that is, the one in which the plate presents the appropriate angulation at its end, and that could be from 0 ° to 60 °, being the angle between the vertical of the plane of the bone bed and the axis of angulation towards mesial, as can be seen schematically in the
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    figure 5.
    Introduced the rod in said vertical hole and secured in said hole thanks to the retention means, the surgeon will position the plate in the proper position thanks to the turning means so that the guiding body is placed in correspondence with the area of the bed bone where drilling or milling at an angle is going to be performed.
    Specifically, the angle guiding of the cutter is carried out thanks to the fact that the guiding body is positioned on the angled end of the plate, so the surgeon will only have to pass the cutter through said guiding body so that It is tilted correctly. On the other hand, said guide body is such that it allows only the entry of the drill, constituting a stop so that the drill cannot continue advancing and the hole is made at the correct depth. More specifically, the length of the cutters and the depth that can be given to the hole in the bone bed is known, the guiding body will have a height such that, as said, it constitutes a stop to prevent the advance of the drill once the necessary depth has been drilled.
    At the same time, in addition to the turning means that allow relative displacement between the plate and the rod, said plate also includes horizontal displacement means that allow varying the distance of the angled end of said plate from said rod. That is, through said means of horizontal displacement it is possible to regulate the distance from the rod, and therefore from the vertical hole of the bone bed into which said rod is introduced, to the guiding body through which it will be introduced. the drill with the necessary angulation and depth.
    Therefore, once the guide of the invention has been placed in the vertical hole product of a first perforation of the patient's bone bed through the stem and fixed this to said bed thanks to the retention means, the surgeon will be able to position the body of guided at any point of the patient's mouth within a circular surface centered in said vertical hole and with a selectable variable radius through the horizontal displacement means that the plate has.
    From this description the advantages of the milling guide of the
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    The invention allows a spatial placement of the implants, a safe and easy milling guidance, both in angle and depth, which facilitates the surgeon's task while minimizing errors during the milling operation. Another advantage is that one of the vertical milling for the placement of one of the implants will be used as a guide positioner and does not need additional perforations in the patient's mouth, which makes it a less traumatic treatment for the patient.
    Description of the drawings
    To complement the description that is being made and in order to help a better understanding of the features of the invention, according to a preferred example of practical realization thereof, an set of drawings is accompanied as an integral part of said description. For illustrative purposes and not limitation, the following has been represented:
    - Figure 1.- Shows a perspective view of the milling guide of the present invention.
    - Figure 2.- Shows a side elevation view of the milling guide of the present invention.
    - Figure 3.- Shows a exploded perspective view of the elements that make up the milling guide of the present invention.
    - Figure 4.- Shows a exploded perspective view of some of the elements of figure 3 according to a possible embodiment of the invention.
    - Figure 5. - Finally, it shows a schematic representation of the mouth of a patient where the angle between the vertical of the bone bed plane and the axis of the mesial angulation has been represented.
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    Preferred Embodiment of the Invention
    As can be seen in Figures 1 to 5, where a preferred embodiment of the invention is shown, the planning and milling gwa for dental implants is structured in such a way that it comprises:
    - A support (1);
    A plate (2) in the form of a horizontal plate that is held on the support (1) but which is movable and detachable with respect to it, and therefore interchangeable and comprising an angulation at least one of its ends.
    Also, according to a possible embodiment of the invention, said plate (2) comprises, at least one of its ends, a means of regulation of the angulation (not shown) so that with a single plate different angles can be selected for milling from the bone bed, thus eliminating the need to use different plates for each of the angles. Said angulation adjustment means could be formed, for example, by a hinge or the like which together with blocking means allowed to position and fix the position of said end of the plate at will or at predetermined positions and angles, from 0 ° up to 60 °.
    - A guide body (3) located at the angled end of the plate (2) for the proper guidance of the drill or drill responsible for drilling the bone bed with the appropriate angulation and depth;
    According to a possible practical embodiment shown in the figures, said guide body (3) is constituted by a cylindrical body that has a wide radial groove to facilitate the entry of the cutter in cases of compromised openings.
    In addition, according to another possible embodiment of the invention, said guide body (3) will be removable and interchangeable, allowing it to be replaced by another in function
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    of the diameter and length of the strawberry, giving an even greater versatility to the guide of the invention
    - A rod (4), preferably cylindrical, with an upper end and a lower end, where:
    o The upper end joins the support (1) through turning means (5) that allow relative displacement between them.
    According to a possible practical embodiment, shown in Figure 6, said turning means (5) are formed by a ball-shaped termination that cooperates with a spherical cavity in the support (1) so that said support (1) can rotate freely on the upper end of the rod (4), facilitating its colocation and orientation.
    o The lower end is inserted into the bone bed of the patient's mouth, holding onto it thanks to retention means (6).
    According to a possible practical embodiment shown in Figure 6, said retention means (6) are constituted by a conical section that increases its diameter as it moves away from the lower end, so that a friction adjustment between rod is carried out (4 ) and bone bed.
    According to another possible embodiment, said conical section could also comprise some surface roughness obtained by means of any known method in order to improve the grip between rod (4) and bone bed.
    On the other hand, and as can be seen in the figures, especially in numbers 1 and 3, the plate (2) comprises horizontal displacement means (7) that allow varying the distance between the rod (4) and the body of guided (3) located at the angled end of said plate (2).
    According to a possible embodiment of the invention shown in said figures, the means of
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    horizontal displacement (7) is formed by a rail or groove through which the assembly formed by the support (1) and the rod (4) is capable of moving. Specifically, in said embodiment, the displacement is achieved thanks to the action of a clamping element (10) that attaches the support (1) to the plate (2) by means of a second rod (12) or similar that is introduced through said rail in a hole (13) present in the upper part of the support (1).
    On the other hand, thanks to said lane or groove, which runs to the guide body (3), it is possible to facilitate the entry of the cutter for those cases of compromised openings. In other words, the rail or groove will therefore have a double function, constituting on the one hand the means of horizontal displacement (7) and, on the other, constituting a hole to facilitate the entry of the cutter when necessary.
    In addition, as can be seen in the figures, the support (1) has a lower body (8) that serves to accommodate both the second rod (12) of the clamping element (10) and the upper end of the rod ( 4), so that in the case that said upper end has a ballhead it will have a complementary spherical cavity.
    On the other hand, according to a possible practical embodiment shown in Figures 1 and 3, the plate (2) has position signals (11) so that the surgeon can have a reference of the relative displacement between the support (1) and said plate (2).
    However, according to a possible practical embodiment of the invention, shown in Figure 4, said upper end of the rod (4) may be attached to the support (1) by means of an intermediate element (9) that will be housed in the lower body ( 8) of said support (1).
    Finally, the guide of the invention is made with any material that meets the mechanical, biocompatibility requirements and can be sterilized such as metals such as stainless steel or titanium, plastics etc.
    权利要求:
    Claims (13)
    [1]
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    1. - Gwa of planning and milling for dental implants, characterized in that it comprises:
    - A support (1);
    - A plate (2) which in turn comprises an angulation at least one of its ends and which is held on the support (1) in a movable and detachable manner with respect to it;
    - A guiding body (3) located at the angulation of the end of the plate (2);
    - A rod (4) which in turn comprises:
    o An upper end that joins the support (2) through turning means (5) that allow relative displacement between the two, and o A lower end that is inserted into the bone bed of the patient's mouth.
    and where the plate (2) comprises means of horizontal displacement (7) that allow varying the distance between the rod (4) and the guiding body (3).
    [2]
    2. - Planning and milling guide for dental implants according to claim 1, characterized in that the horizontal displacement means (7) are formed by a rail through which the assembly formed by the support (1) and the assembly can move. rod (4), as well as to facilitate the entry of the drill or milling cutter.
    [3]
    3. - Planning and milling guide for dental implants according to any of the preceding claims, characterized in that the guide body (3) is constituted by a cylindrical body that has a wide radial groove to facilitate the entry of the drill or drill.
    [4]
    4. - Planning and milling guide for dental implants according to any of the
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    previous claims, characterized in that the plate (2) comprises a means of regulation of the angulation at the end comprising the angulation.
    [5]
    5. - Planning and milling guide for dental implants according to any of the preceding claims, characterized in that it comprises a clamping element (10) that attaches the support (1) to the plate (2) by means of a second rod (12 ) complementary with a hole (13) of the support (1).
    [6]
    6. - Planning and milling guide for dental implants according to any of the preceding claims, characterized in that the turning means (5) are formed by a ball-shaped termination at the upper end of the rod (4) that cooperates with a spherical cavity in the support (1).
    [7]
    7. - Planning and milling guide for dental implants according to any of the preceding claims, characterized in that the lower end of the rod (4) comprises retention means (6) to be fixed to the bone bed.
    [8]
    8. - Planning and milling guide for dental implants according to claim 7, characterized in that the retention means (6) comprise a conical section that increases its diameter as it moves away from the lower end.
    [9]
    9. - Planning and milling guide for dental implants according to claim 7 or 8, characterized in that the retention means (6) comprise a surface roughness of the lower end of the rod (4).
    [10]
    10. - Planning and milling guide for dental implants according to any of the preceding claims, characterized in that the support (1) has a lower body (8) that serves as a housing for the upper end of the rod (4).
    [11]
    11. - Planning and milling guide for dental implants according to any of the preceding claims, characterized in that it comprises an intermediate element (9) by means of which the upper end of the rod (4) is joined with the support (1).
    [12]
    12.- Gwa of planning and milling for dental implants according to any of the preceding claims, characterized in that the plate (2) has position signals (11).
    5 13.- Planning and milling guide for dental implants according to any of the
    previous claims, characterized in that the guiding body (3) is removable and interchangeable.
    [14]
    14.- Planning and milling guide for dental implants according to any of the 10 previous claims, characterized in that it is reusable.
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    WO1998043528A2|1997-03-27|1998-10-08|Israel Abrahami|Drill guide|
    US20040048225A1|2002-09-09|2004-03-11|Fletcher Gayle J.|Dental drill guide and method|
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    法律状态:
    2017-01-03| FG2A| Definitive protection|Ref document number: 2575509 Country of ref document: ES Kind code of ref document: B1 Effective date: 20170103 |
    优先权:
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