FINGERFREIES MAXILLA-REPOSITIONSIMPLANTAT

Description

[0001] The invention relates to a maxillary repositioning implant for the precise three-dimensional alignment of a displaced maxillary segment relative to a skull-attached residual maxillary segment. Here, as is customary, the maxilla refers to the human upper jawbone. A portion of the upper jawbone can be completely separated from the rest of the maxilla by means of a surgical procedure. This allows a displaced maxillary segment to be removed from a skull-attached residual maxillary segment. In this way, malpositions in the jaw can be corrected. However, after repositioning, the residual maxillary segment must be reattached to the displaced maxillary segment. Maxillary repositioning implants are typically used for this purpose.

[0002] Such maxillary repositioning implants are already known from various publications, such as EP 2 563 244 B1. US 2011 / 144 698 A1 discloses a mandibular repositioning implant with otherwise similar properties.

[0003] This document discloses a preoperatively custom-made implant for use in orthognathic surgery. In orthognathic surgery, the first part of the maxilla is separated from the second part, and the implant is then inserted as part of this procedure. The implant comprises a plate component that is pre-shaped to correspond to a preoperative form of the maxilla and contains several non-linear undulations that correspond to specific surface features of the first part of the maxilla. The plate component defines at least one fixation opening, which extends through the plate component and is designed to receive a bone fixation element for securing the plate component to the first part of the maxilla.Furthermore, there are a plurality of (free) fingers extending away from the plate component, the (free) fingers being pre-shaped to correspond to the shape of the second part of the upper jaw and containing several non-linear undulations that correspond to certain surface parts of the second part of the upper jaw.

[0004] Adjacent documents reveal similar implants, such as EP 2 687 168 B1, EP 2 698 122 B1, EP 2 563 242 B1, EP 3 566 663 A2, EP 3 263 050 B1, EP 2 952 145 B1, EP 2 767 246 A1, EP 2 398 411 B1, FR 2 942 125 B1, WO 2014 090 964 A2, EP 2 931 143 A2, FR 2 999 071 A1, EP 2 906 129 B1 and WO 2014 043 370 A1. The US 2018 / 344 464 A1, the US 2012 / 277 749 A1 or the US 2017 / 156 770 A1 also reveal similar implants.

[0005] However, the well-known implants always have disadvantages. In particular, these implants are difficult to manufacture. Furthermore, their stability is often insufficient. If the implants are attached to the bone and then covered with soft tissue such as skin and connective tissue, the result is an unaesthetic appearance, which also leads to discomfort for the patient. Complications and adverse medical side effects are also common.

[0006] Based on a maxillary repositioning implant with the following features, the invention aims to eliminate these disadvantages. Furthermore, it seeks to create a more cost-effective maxillary repositioning implant while also eliminating other disadvantages.

[0007] The invention relates to a maxillary repositioning implant having a base comprising at least one plate with screw holes, wherein a section of the plate material defines each screw hole as its rim (i.e., partially or completely surrounds it), wherein the screw hole is designed to receive a bone screw to ensure fixation to the skull-resistant maxillary remnant via the bone screw inserted into the respective screw hole, wherein the maxillary repositioning implant further comprises a connecting section spaced from the base by connecting webs, wherein the connecting section has at least one plate also with screw holes, and wherein a section of the plate material defines each screw hole as its rim (i.e.,(partially or completely surrounding the screw hole) in order to ensure fixation to the maxillary displacement segment via a bone screw inserted into the respective screw hole.

[0008] The problem mentioned at the outset is solved according to the invention by the fact that (at least or only / exactly) two (distinct / separate / connected on both sides) connecting webs extend from the plate of the connecting section to the edge of a (single / specific) screw hole in the plate of the base.

[0009] Such a maxillary repositioning implant enables greater strength with a stress-optimized design. Furthermore, less material is required compared to conventional implants. The surprising result is a more biocompatible design and the elimination of the aforementioned disadvantages. This presents a solution that is entirely different from EP 2 563 244 B1, with unexpectedly positive effects.

[0010] It should be noted that both the base and the connecting section are adapted to the patient's specific bone geometry with respect to their side facing the maxilla. The surface contour of the maxilla, both in the area of ​​the maxillary repositioning segment and in the area of ​​the skull-fixed maxillary remnant, is recorded using MRI, CRT, and / or X-ray imaging and subsequently copied into an identical contour for the base plate for the skull-fixed maxillary remnant and the connecting section plate for the maxillary repositioning segment using CAD / CAM manufacturing processes. Sintering processes, such as laser sintering, for example, selective laser sintering, can typically be used for this purpose.

[0011] For protection abroad, particularly in the United States of America, it should be noted that the invention also includes a method for inserting the maxillary repositioning implant into / on the patient.

[0012] A method for manufacturing the maxillary repositioning implant is also described, which does not form part of the claimed invention. It serves only to illustrate the invention.

[0013] Advantageous embodiments are claimed in the dependent claims and are explained in more detail below. It is also conceivable that these aspects are pursued independently of the fact that (at least or only / exactly) two connecting webs extend from the plate of the connecting section to the edge of a (single / specific) screw hole in the plate of the base. However, it is of course preferred if this combination of features is also realized in the embodiments of the dependent claims.

[0014] In order to achieve a particularly tissue-friendly design - especially between screw hole fixing points on the bone - it has proven advantageous if each connecting bridge (preferably at least at one point or over the entire length of the connecting bridge) has an elliptical cross-section.

[0015] For manufacturing purposes, it is advantageous if the elliptical cross-section assumes a specific circular shape at least at one point or along the entire length of the connecting bar. It is also possible for flattened areas to appear on the upper surface of the connecting bar facing away from the maxilla, and / or for the elliptical cross-section to vary along its length. Raised or recessed areas, particularly curves, may also be incorporated. A particularly aesthetic appearance is a beneficial consequence of soft tissue covering the implant or implant sections after insertion.

[0016] Stability is enhanced if the base plate and / or the connecting section plate has at least one point that is thicker than the connecting web (especially at its thickest point). In this context, it is also desirable that the connecting webs are distinct from the plate components and / or that the cross-sectional area of ​​the connecting web is between 70% or 80% and 120% (preferably 75% or 100%) of the area of ​​the screw hole, or that the width of the connecting web is approximately equal to the diameter of one of the screw holes.

[0017] The precision of the alignment of the maxillary repositioning segment relative to the remaining, skull-fixed maxillary segment is enhanced when each base plate and each connecting segment plate are linked by precisely two connecting bridges. Unintended stresses such as bending and twisting, particularly during unavoidable torsion of the base relative to the connecting segment during implant insertion, then do not lead to misalignment of the two maxillary segments. This ensures a particularly good medical outcome.

[0018] If the connecting webs run completely or predominantly parallel to each other, a particularly stress-optimized design can be achieved. The forces are then distributed uniformly.

[0019] An advantageous embodiment is further characterized in that each connecting bridge has a first end and a second end, wherein the first end transitions seamlessly (integrally) into the edge of a first screw hole in the base-side plate, and the second end transitions seamlessly (integrally) into the edge of a first screw hole in the terminal-side plate. Such a seamless geometry, which prevents inflammation for the patient, can then be achieved. Furthermore, high load-bearing capacity of the implant is ensured.

[0020] The invention further focuses on an embodiment characterized in that the base-side plate is connected to the connection-side plate via a first connecting web and a second connecting web, wherein the first connecting web and the second connecting web engage with their first ends on the edge of a single first screw hole of the base-side plate and a) either engage with their second ends together on the edge of a single first screw hole of the connection-section-side plate / are attached to it / are integrated therein or b) one connecting web engages with its second end on the edge of the first screw hole of the connection-section-side plate / is integrated therein and the other connecting web engages with the edge of a second screw hole of the connection-section-side plate / is integrated therein.This embodiment thus offers two possibilities for implementation: a particularly delicate variant (b) or a particularly stable variant (a). It also allows for consideration of geometric peculiarities on the surface of the maxilla of the specific patient in question. The result is particularly effective, patient-specific solutions.

[0021] It has proven effective if the second connecting web gradually moves away from the first connecting web along its length, starting from the base plate (from at least near the first end towards near the second end), and in a further development, in a report near the second end, moves closer to the first connecting web again. This prevents material thickening caused by the proximity of the two connecting webs and also increases stability.

[0022] Minimal material usage while meeting stability requirements can be achieved if each plate has exactly 2 or more, but no more than 3, 4, 5 or 6 screw holes.

[0023] Furthermore, it is advantageous if all plates have the same number of screw holes. This makes inserting the implant easier for the surgeon.

[0024] The biocompatibility of the implant is improved if the edge is formed as a ridge. This ridge can be further developed if it is (more) concave on the side facing the screw hole. The screw head can then be flush with the maxillary-facing surface of the implant and sit precisely against the implant without wobbling. This significantly increases the biocompatibility of the implant when bone screws are used.

[0025] This effect can be further enhanced if the bulge is convex or cylindrical on the side facing away from the screw hole.

[0026] For manufacturing purposes, it is advantageous if each connecting web has at least one straight / linear / unbent section in the longitudinal direction.

[0027] Such an implant can be particularly well adapted to the specific patient when two longitudinally straight / linear / unbent sections are connected by a (curved) arc section, advantageously being prepared at a distance from a "Le Fort I area" to bridge it. Ultimately, this creates an "offset" that avoids intolerances in this Le Fort I area.

[0028] It has proven advantageous if the straight section or a curved section of the connecting web forms the first end or the second end of the connecting web.

[0029] Furthermore, when testing the elliptical cross-section, it has proven beneficial if the major axis of the ellipse is between 25% and 75%, preferably 50% (+ / - 10%), larger than the minor axis. This results in particularly stable solutions that also offer good wearing comfort.

[0030] If the maxillary repositioning implant is dimensioned so that it only comes into contact with the maxilla in the area of ​​the edges of the screw holes, a precise alignment of the two affected maxillary sections (maxillary displacement section and skull-fixed maxillary residual section) can be achieved while avoiding unwanted pressure points and inflammation.

[0031] Furthermore, it is advantageous if the connecting webs are materially separate from each other (i.e., that the connecting webs are fundamentally separate) and are attached to the connecting section only by means of a first fastening area at their first end to the base and a second fastening area at their second end to the connecting section. This avoids the use of unnecessarily large amounts of material.

[0032] It is advantageous if the connecting webs ensure a planar offset between an imaginary first plane accommodating the screw hole at the base and an imaginary second plane accommodating the screw hole in the connecting section.

[0033] It is advantageous if the longitudinal axis of a base-side plate defines the longitudinal axis of one or two connecting webs extending from it, to which the longitudinal axis of the connection-section-side plate, on which said connecting web or said connecting webs act, is aligned or runs perpendicular to it - preferably orthogonally.

[0034] For the manufacturing process, but also for the biocompatibility of the implant, it is beneficial if the edges / ridges of the screw holes (all) remain the same / uniform and / or are of the same thickness.

[0035] If two base plates are connected by a retaining clip, the manipulability of the maxillary repositioning implant can be improved. In particular, the insertion procedure can be simplified. For example, the maxillary repositioning implant can then be grasped by the surgeon as a single component—comprising at least one, preferably two, even better three, or ideally four, five, or six plates at the base, and at least one plate, preferably two, or even three, four, or even five or six plates at the annular segment—using a retaining clip, two retaining clips at the base, one retaining clip at the annular segment, or even two or three retaining clips. It can then be attached to the bone as an integral component, first to the skull-stabilized maxillary remnant and then to the maxillary repositioning segment, or vice versa.During this procedure, the separation of the maxilla between the maxillary displacement segment and the skull-fixed maxillary residual segment (preferably in the "Le Fort 1 area") is to be carried out using cutting / milling measures.

[0036] During this operation, it has proven particularly advantageous to have a retaining bar on the connecting section side of the maxillary repositioning implant, which extends from one side of the face to the other, thus connecting the left and right parts.

[0037] It is particularly advantageous if two plates of the connection section are connected to each other via a retaining bracket.

[0038] It is also advantageous if the retaining bracket is attached to the respective plate via a predetermined breaking point at the end, as it can then be broken out of the implant with simple measures, without cutting, saving effort.

[0039] During the insertion process, it has proven advantageous if the retaining bracket itself also has a rounded contour.

[0040] Particularly advantageous embodiments can be realized if the retaining bracket a) has a flat surface facing the maxilla and a convex surface facing away from the maxilla, or b) has an elliptical, preferably circular, section / cross-section.

[0041] For removing the retaining clips from the inserted implant, i.e., detaching the retaining clip from the respective plates, it is advantageous if an eyelet is incorporated, preferably in the center of the retaining clip, the longitudinal axis of which is oriented transversely – preferably orthogonally – to the longitudinal axis of the retaining clip. In certain cases, it may be advantageous if the longitudinal axis of the eyelet is aligned with the longitudinal axis of the retaining clip.

[0042] When designing the retention bracket, it is particularly advantageous if the bracket remains spaced away from the maxilla when attached to the bone. This ensures sufficient clearance to prevent the bracket from breaking out once inserted and to avoid trauma to the patient in the area of ​​the retention bracket.

[0043] If all plates of the connecting section are linked together via several retaining clips, a compact maxillary repositioning implant can be created that is precisely manageable during surgery. This facilitates manipulation during the operation.

[0044] It is advantageous if two connecting webs and a) a retaining bracket or b) two retaining brackets engage a single edge of a screw hole. It may also be preferred if c) an edge for another / free screw hole is formed on a plate having this screw hole, from which neither connecting webs nor retaining brackets extend (i.e., there are connecting web- and retaining bracket-free edges of screw holes), or d) either two connecting webs or at least one retaining bracket (preferably two retaining brackets) extend from each edge of a screw hole.

[0045] It is advantageous if all plates are connected to each other via connecting bridges and / or retaining clips. This results in a uniform maxillary repositioning implant that is easy to handle.

[0046] Stability is improved if each plate has only edges for the screw holes and, in addition, infill areas that connect the edges and complete the plate with straight ends. These infill areas should ideally be designed without any protrusion. This prevents trauma and inflammation.

[0047] Furthermore, it is advantageous if two connecting bridges enclose an empty space.

[0048] An advantageous embodiment is also characterized by the presence of a cavity between the edges of two screw holes in a plate and the adjacent filling areas. This allows for the design of a particularly lightweight maxillary repositioning implant that uses minimal material, while still maintaining sufficient stability.

[0049] If two plates and the connecting bridges connecting them are arranged in a diamond shape, i.e., defining a diamond-shaped void, a particularly high-load-bearing maxillary repositioning implant design can be achieved.

[0050] Proven materials can be used if the implant is made of metal, such as a titanium or magnesium alloy, or of plastic, such as PPA, PLLA, or PP. Magnesium alloys, in particular, offer unexpected advantages.

[0051] Ideally, the maxillary repositioning implant should be designed as a patient-specific implant, preferably using sintering techniques.

[0052] The maxillary repositioning implant is easily grasped by its retaining clips. The plates and connecting bars are adapted to the patient's specific maxillary geometry. The design also anticipates the need for postoperative soft tissue coverage. After opening the soft tissue in the maxillary region during the procedure, the implant is attached to the maxilla, first using bone screws to the maxillary repositioning segment or to the remaining, skull-stabilized maxillary segment. The separation of these two maxillary segments occurs before, during, or after this process.After the maxillary repositioning segment is moved relative to the remaining, stable maxillary segment, the implant is secured to the remaining segment of the maxilla—either the stable segment or the repositioned segment—using bone screws inserted through the existing screw holes. This secures the implant to the remaining segment of the maxilla, either the stable segment or the maxillary repositioning segment. A precise final position of the two maxillary segments relative to each other, fulfilling the desired medical outcome, can then be achieved. Before the implant is covered by soft tissue again, the retaining clips are removed, for example, by breaking them out, utilizing the weakened area at the predetermined breaking points.

[0053] The invention is explained in more detail below with the aid of a drawing. The drawing shows: Fig. 1 shows a first embodiment of a maxillary repositioning implant ("double-ridge concept") during insertion; Fig. 2 shows the maxillary repositioning implant with its base and connection plates connected via connecting bridges, with the retaining clips already removed, in a position that Fig. 1 In a comparable view, Fig. 3 shows a rotated representation of the inserted maxillary repositioning implant in its current state. Fig. 2 , Fig. 4 an enlargement of area IV from Fig. 2 with inserted bone screws, Fig. 5 a singular view of the side of a single connecting bridge made of Fig. 3 , Figs. 6 and 7 Cross-sections along lines VI and VII through the connecting bridge made of Fig. 5Fig. 8 shows a second embodiment of a maxillary repositioning implant according to the invention ("double-ridge concept with optimized path"), wherein the two connecting ridges, which connect a plate of the base and a plate of the connecting section, are spaced apart from each other, i.e., spread apart, thus defining a diamond-shaped void. Fig. 9 shows a representation of the maxillary repositioning implant. Fig. 8 with the retaining clips removed, Fig. 10 shows a side view of one half of the maxillary repositioning implant with the retaining clips removed, as shown in Fig. 9 As shown in Fig. 11, an enlargement of the area from Fig. 9 with inserted bone screws, Fig. 12 a lateral view of one of the connecting bridges made of Fig. 10 , and Figs. 13 and 14 cross-sections along lines XIII and XIV through the respective connecting bridge made of Fig. 12 .

[0054] The figures are purely schematic and serve only to illustrate the invention. Identical elements are marked with the same reference symbols.

[0055] The first embodiment, described as the "double-ridge concept," relates to a maxillary repositioning implant 1. The maxillary repositioning implant engages a skull-fixed maxillary remnant 3 with a base 2. A connecting section 4 of the maxillary repositioning implant 1 engages a maxillary displacement section 5. The skull-fixed maxillary remnant 3 and the maxillary displacement section 5 are parts of the maxilla, i.e., the upper jaw.

[0056] The connecting section 4 is spaced apart from the base 2 of the maxillary repositioning implant 1 by connecting webs 6. These connecting webs 6, of which there are eight in this embodiment, engage plates 7.

[0057] Four plates 7 belong to base 2 and four plates 7 belong to connection section 4. Two, three, four, five, six, seven, or even eight plates 7 can be used per base 2 or per connection section 4. In the present embodiment, there are the same number of plates 7 in base 2 and connection section 4, namely four each. However, the numbers can be different.

[0058] There are also retaining brackets 8 that connect the plates 7 of base 2 to each other or connect the plates 7 of connecting section 4 to each other. Ultimately, the retaining brackets 8 are positioned so that at least two plates 7 of base 2 or connecting section 4 are always connected to each other. In addition, there is a central retaining bracket 8, which is further identified by the reference numeral 9 and which ensures the connection of the left half of the maxillary repositioning implant 1 to the right half of the maxillary repositioning implant 1 in the area of ​​connecting section 4. The arrangement of the central retaining bracket 9 as part of connecting section 4 is advantageous because the component can then be positioned below the nose, resulting in relatively good wearing comfort and a pleasing appearance.

[0059] Returning to the connecting webs 6, it is important that preferably all plates 7 have two screw holes 10. The screw holes 10 are formed by the material of the plates 7. The material of the plates 7 defines a rim 11 for the respective screw hole 10. The rim 11 is formed as a bead 12. It should be noted that each plate 7 should have more than two screw holes 10.

[0060] In the transition area between the retaining brackets 8, including the central retaining bracket 9, and the respective plates 7, eyelets 13 are provided. The eyelets 13 have longitudinal axes, which are marked with the reference numeral 14. In the transition area between the retaining brackets 8 and the plates 7, there are predetermined breaking points 15. These are shown as an example on one retaining bracket 8, but are present on most, or preferably all, retaining brackets 8.

[0061] The connecting webs 6 always extend from a plate 7 of the base 2 and ensure a connection with the edge 11 of a plate 7 of the connecting section 4.

[0062] In the exemplary embodiment of the Fig. 1 The connecting webs 6 of one plate 7 to the other plate 7 run (predominantly) parallel to each other, with their first end terminating in the edge 11 of a single screw hole on one plate 7 and their second end terminating in the edge 11 of the bead 12 of a single screw hole 10 on the (other) plate 7 of the connecting section 4. In other words, both connecting webs 6 always connect a single edge of a single screw hole 10 on one plate 7 to the edge 11 of a single screw hole 10 on the other plate 7. The connecting webs 6 always occur in pairs. There are gaps 16 between the connecting webs 6.

[0063] These empty spaces are also well suited for Fig. 4to be recognized, whereby the inserted bone screws 17 are also indicated there.

[0064] In Fig. 2 This shows the state without the retaining bar after completion of the operation.

[0065] The individual edges 11 around the screw holes 10 are completed by the filling areas 18 connecting these screw holes 10 to form the respective plate 7. It is noticeable that on at least one of the plates 7 of the connection section 4, these filling areas 18, which close off the edges 11 to the plate, leave a cavity 19 free.

[0066] The fact that the edges 11 are cylindrical on their outer side, at least in terms of their outer contour, but have a concave shape adapted to a screw head on their inner side, is the Fig. 3 easy to remove.

[0067] In Fig. 5It is indicated that at least one of the connecting webs 6, preferably all connecting webs 6, between a first end 20 of the connecting web 6 and a second end 21 of the connecting web 6 (see in this regard Fig. 3 ) possess a straight section 22 and at least one curved section 23.

[0068] That the cross-section of the connecting web 6, preferably of all connecting webs 6, remains the same over its length and does not vary from connecting web 6 to connecting web 6, is, in summary, the Figures 5 to 7 This is clearly visible. The main axis 24 is larger than the secondary axis 25 by a factor of 11:8.

[0069] The embodiment as described in the Figs. 8 to 14The configuration shown, described as a "double-ridge concept with optimized path," is characterized by the enlargement of the voids 16, such that the connecting webs 6, which each connect two plates 7, tend to move away from each other in the direction of the connection section 4. One connecting web 6 extends from the edge 11 of a base-side plate 7 around a single screw hole 10 to an edge 11 around a first screw hole 10 in the plate 7 of the connection section 4, whereas the other connecting web 6 extends from the same edge 11 around the screw hole 10 from which the first connecting web 6 originates to a different edge 11 of a different screw hole 10 in the same plate 7 of the connection section 4, relative to the first connecting web 6. The void 16 is then shaped more or less like a diamond.One connecting web 6 and the other connecting web 6 then start from the same edge 11 of the screw hole 10 of the base 2, but end at different edges 11 of different screw holes 10 of the same plate 7 of the connection section 4. Reference symbol list

[0070] 1 Maxilla repositioning implant 2 Base 3 Skull-fixed maxilla remnant 4 Connecting section 5 Maxilla displacement section 6 Connecting bar 7 Plate 8 Retaining bracket 9 Central retaining bracket 10 Screw hole 11 Edge 12 Bead 13 Eyelet 14 Longitudinal axis 15 Break point 16 Empty space 17 Bone screw 18 Filling area 19 Cavity 20 First end of connecting bar 21 Second end of connecting bar 22 Straight section of connecting bar 23 Curved section of connecting bar 24 Main axis 25 Secondary axis

Claims

1. A maxilla repositioning implant (1) for three-dimensional precise orienting of a maxilla displacing portion (5) relative to a remaining maxilla portion (3) fixed to the skull, wherein the maxilla repositioning implant (1) has a base (3) which has at least one plate (7) in which screw holes (10) are provided, wherein a portion of the material of the plate (7) as a rim (11) defines a respective screw hole (10) which is provided for receiving a bone screw (17) in order to ensure fastening to the remaining maxilla portion (3) fixed to the skull via the bone screw (17) to be inserted into the respective screw hole(10), wherein the maxilla repositioning implant (1) furthermore has a connection portion (4) which is spaced from the base (2) via connecting bridges (6), wherein the connection portion (4) has at least one plate (7) in which screw holes (10) are present and wherein a portion of the material of this plate (7) as a rim (11) defines a respective screw hole (10) in order to ensure fastening to the maxilla displacing portion (5) via a bone screw (17) to be inserted into the respective screw hole (10), characterized in that two connecting bridges (6) extend from the plate (7) of the connection portion (4) towards the rim (11) of a screw hole (10) in the plate (7) of the base (2).

2. The maxilla repositioning implant (1) according to claim 1, characterized in that each of the connecting bridges (6) has an elliptical cross-section.

3. The maxilla repositioning implant (1) according to claim 2, characterized in that the elliptical cross-section assumes the specific shape of a circle.

4. The maxilla repositioning implant (1) according to any of claims 1 to 3, characterized in that the plate (7) of the base (2) and / or the plate (7) of the connection portion (4) has / have at least one point which has / have a greater thickness than the connecting bridge (6).

5. The maxilla repositioning implant (1) according to any of claims 1 to 4, characterized in that each plate (7) of the base (2) and each plate (7) of the connection portion (4) are connected to each other via exactly two connecting bridges (6).

6. The maxilla repositioning implant (1) according to any of claims 1 to 3, characterized in that the connecting bridges (6) run completely or mainly parallel to each other.

7. The maxilla repositioning implant (1) according to any of claims 1 to 6, characterized in that each connecting bridge (6) has a first end (20) and a second end (21), wherein the first end (20) transitions as a single piece of material into the rim (11) of a first screw hole (10) of the base-side plate (7) and the second end (21) transitions as a single piece of material into the rim (11) of a first screw hole (10) of the plate (7) on the connection portion side.

8. The maxilla repositioning implant (1) according to any of claims 1 to 7, characterized in that the base-side plate (7) is connected to the connection-side plate (7) via a first connecting bridge (6) and a second connecting bridge (6), wherein the first connecting bridge (6) and the second connecting bridge (6) engage with their first ends (20) on the rim (11) of a single first screw hole (10) of the base-side plate (7) and a) either engage with their second ends (21) together at the rim (11) of a single first screw hole (10) of the plate (7) on the connection portion side, or b) the one connecting bridge (6) engages with its second end (21) at the rim (11) of the first screw hole (10) of the plate (7) on the connection portion side and the other connecting bridge (6) engages at the rim (11) of a second screw hole (10) of the plate (7) on the connection portion side.

9. The maxilla repositioning implant (1) according to claim 8, characterized in that the second connecting bridge (6) progressively increases in distance away from the first connecting bridge (6) over the length as seen from the base-side plate (7).

10. The maxilla repositioning implant (1) according to any of claims 1 to 9, characterized in that each plate (7) has exactly two or more screw holes (10).