CN219021392U - Positioning guide plate for orthognathic surgery and positioning bone-knitting assembly - Google Patents

Abstract

The utility model relates to the field of orthognathic surgical instruments, and discloses an orthognathic surgical positioning guide plate and a positioning bone-knitting assembly. The utility model discloses a orthognathic surgery positioning guide plate which comprises a first positioning attaching surface and a first outer side surface, wherein the first positioning attaching surface is attached to and positioned with a jawbone surface, the first outer side surface is opposite to the first positioning attaching surface, the first positioning attaching surface is provided with a first positioning area for adapting and fixing the jawbone surface and a second positioning area for adapting and separating the jawbone, the first positioning attaching surface is provided with a bone plate positioning structure for positioning a matched bone plate, and the orthognathic surgery positioning guide plate is further provided with a first screw hole penetrating through the bone plate positioning structure. The orthognathic operation positioning guide plate can be used for positioning the osteotomy jawbone, ensuring that the osteotomy jawbone is positioned to a set position and ensuring the correction effect, and meanwhile, the orthognathic operation positioning guide plate can be used for positioning the bone fracture plate and ensuring the accuracy of the installation position of the bone fracture plate, so that the accuracy of the corrective operation is finally ensured.

Description

Positioning guide plate for orthognathic surgery and positioning bone-knitting assembly

Technical Field

The utility model relates to the field of orthognathic surgical instruments, in particular to an orthognathic surgical positioning guide plate and a positioning bone-knitting assembly.

Background

The method is characterized in that the maxillofacial bone deformity caused by congenital or postnatal reasons causes inconsistent upper and lower jaw relations and inconsistent dental midlines, and particularly symptoms such as backbones, heaven teeth, pocket teeth, small chin and the like, serious maxillofacial bone deformity needs to be subjected to orthognathic correction surgery simultaneously, in the surgery process, a surgeon can cut off the upper jaw bone and move to a pre-surgery planning position, the interfered bones are corrected and then connected by a bone plate, then the lower jaw bone is cut off and moved to the planning position according to the final position of the upper jaw bone and the occlusion relation of the upper and lower teeth, and the lower jaw bone is connected by the bone plate, in the surgery process, the final position of the upper jaw bone directly influences the surgery effect, and in order to ensure the consistency of the final position of the upper jaw bone and the pre-surgery planning position as much as possible, the final position of the upper jaw bone is determined through a surgery guide plate, a plate and a navigation auxiliary system at present.

The final position of the maxilla is determined through the middle plate after the maxilla is cut, and the plate is meshed between the upper teeth and the lower teeth, so that the position of the maxilla is indirectly determined through the mandible, and the condyle of the mandible is movable in the joint socket, so that the position in the operation cannot be completely consistent with the design before the operation, and the correction effect of a patient can be adversely affected.

The patent application with publication number CN113712655A discloses a buckle type bone fracture plate, which comprises a bone fracture plate body and a positioning guide plate, wherein the bone fracture plate body is matched with the buckle type bone fracture plate body, the buckle type bone fracture plate body is provided with buckle type nails, the buckle type bone fracture plate body and the buckle type bone fracture plate body are integrated, and the positioning guide plate is provided with positioning holes matched with the buckle type nails. The eye-splice type bone fracture plate uses the front edge to be connected with two ends of a bone tissue fracture line to drill a small hole on a non-fixed position respectively, after a fractured bone piece is reset, a holding clamp is used for clamping the two small holes to position the bone piece, meanwhile, a positioning guide plate is clamped to be attached to the two small holes, then the positioning guide plate is drilled to form two temporary limiting holes corresponding to the small holes one by one, then two Kirschner wires penetrate into the temporary limiting holes, the positioning guide plate is temporarily fixed to temporarily restore the stability of the positioning guide plate, the Kirschner wires are inserted near the fracture line, mutual interference with bone screws and eye-splice nails can be prevented, the corresponding drilling positions are also determined after the positioning guide plate is connected with the two bone tissues, and then a connecting hole is drilled in the bone tissues according to the positioning hole positions on the positioning guide plate by using a ranging drill bit. After the drilling operation is finished, the positioning guide plate is taken down, scraps in the holes are cleaned, then the eye-splice nails on the bone fracture plate body are inserted into the connecting holes along the central axis direction of the connecting holes, the eye-splice nails are in interference fit with the connecting holes on the bone tissues, and the eye-splice nails are fixed in the bone tissues, so that the fixed connection of the bone fracture plate and the bone tissues is realized. The positioning guide plate in the patent is installed after the fractured bone pieces are reset, and the main function of the positioning guide plate is to position the bone plates, so that the installation accuracy of the bone plates is ensured. Thus, repositioning of the separated jawbone cannot be achieved with the positioning guide of this patent.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a positioning guide plate for orthognathic surgery and a positioning bone-knitting assembly, which ensure the accuracy of repositioning the jawbone after osteotomy.

The utility model discloses a orthognathic surgery positioning guide plate, which comprises a first positioning joint surface and a first outer side surface, wherein the first positioning joint surface is in joint positioning with a jaw surface, the first outer side surface is opposite to the first positioning joint surface, the first positioning joint surface is provided with a first positioning area for adapting and fixing the jaw surface and a second positioning area for adapting and separating the jaw, the first positioning joint surface is provided with a bone plate positioning structure for positioning a matched bone plate, and the orthognathic surgery positioning guide plate is further provided with a first screw hole which penetrates through.

Preferably, an anti-skid baffle ring is arranged on the first outer side surface of the orthognathic surgery positioning guide plate at a position corresponding to the first screw hole, and the inner side of the anti-skid baffle ring is provided with a texture structure.

Preferably, the wall thickness of the anti-skid baffle ring is 0.5mm-1mm, and the height is 4mm-5mm.

Preferably, the bone plate positioning structure is a bone plate mounting groove adapted to the peripheral contour of a matched bone plate.

Preferably, the thickness of the orthognathic surgery positioning guide plate is 2mm-2.5mm.

The application discloses a location bone fracture subassembly, including matching bone fracture plate, implant screw and orthognathic surgery location baffle, be provided with the second screw hole that corresponds first screw hole on the matching bone fracture plate, the matching bone fracture plate sets up in the first location laminating face of orthognathic surgery location baffle and corresponds bone fracture plate location structure installation, implant screw passes through first screw hole and installs in the second screw hole of matching bone fracture plate.

Preferably, the thickness of the matched bone fracture plate is 0.4mm-2.0mm, the number of the second screw holes is 4-10, the hole spacing is 4.0mm-5.0mm, and the aperture is 1.6mm-2.7mm.

Preferably, an anti-slip baffle ring is arranged on the first outer side surface of the orthognathic surgery positioning guide plate at a position corresponding to the first screw hole, a texture structure is arranged on the inner side of the anti-slip baffle ring, and the head of the implanted screw is positioned in the anti-slip baffle ring and contacted with the texture structure on the inner side of the anti-slip baffle ring.

Preferably, the bone plate positioning structure is a bone plate mounting groove adapted to the peripheral contour of a matching bone plate, and the matching bone plate is mounted in the bone plate mounting groove.

Preferably, the matching bone fracture plate is made of metal, and the orthognathic surgery positioning guide plate is made of metal or resin.

The beneficial effects of the utility model are as follows: the orthognathic operation positioning guide plate can be used for positioning the osteotomy jawbone, ensuring that the osteotomy jawbone is positioned to a set position and ensuring the correction effect, and meanwhile, the orthognathic operation positioning guide plate can be used for positioning the bone fracture plate and ensuring the accuracy of the installation position of the bone fracture plate, so that the accuracy of the corrective operation is finally ensured.

Drawings

FIG. 1 is a schematic front view of a matched bone plate;

FIG. 2 is a schematic rear view of a matched bone plate;

FIG. 3 is a schematic front view of an orthognathic surgical positioning guide;

FIG. 4 is a schematic rear view of the orthognathic positioning guide;

FIG. 5 is a schematic front view of an osteotomy guide;

FIG. 6 is a schematic rear view of an osteotomy guide;

FIG. 7 is a schematic view of an implant screw;

FIG. 8 is a front schematic view of a positioning bone assembly;

FIG. 9 is a schematic rear view of the bone positioning assembly;

fig. 10 is a side schematic view of a positioning bone assembly.

Reference numerals: the bone plate comprises a matched bone plate 1, a second screw hole 11, a orthognathic surgery positioning guide plate 2, a first positioning joint surface 21, a first positioning area 211, a second positioning area 212, a first outer side surface 22, an anti-slip baffle ring 23, a first screw hole 24, a bone plate mounting groove 25, an osteotomy guide plate 3, a second positioning joint surface 31, a second outer side surface 32, a drilling guide ring 33, a connecting bridge 34, an osteotomy groove 35, a third screw hole 36 and an implantation screw 4.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 3 and 4, the orthognathic surgery positioning guide plate 2 disclosed by the utility model comprises a first positioning joint surface 21 and a first outer side surface 22, wherein the first outer side surface 22 is in joint positioning with a jaw surface, the first positioning joint surface 21 is provided with a first positioning area 211 for adapting and fixing the jaw surface and a second positioning area 212 for adapting and separating the jaw, the first positioning joint surface 21 is provided with a bone plate positioning structure for positioning the matched bone plate 1, and the orthognathic surgery positioning guide plate 2 is further provided with a first screw hole 24 penetrating through.

The first main function of the orthognathic surgery positioning guide plate 2 is to reposition the separated jawbone, wherein the first positioning area 211 of the first positioning and attaching surface 21 is matched with the fixed jawbone surface, the second positioning area 212 is matched with the separated jawbone surface, and the separated jawbone can be repositioned to a planned position by aligning and attaching the first positioning and attaching surface 21 and the second positioning area 212 with the fixed jawbone surface and the separated jawbone respectively. The second main function of the orthognathic surgery positioning guide plate 2 is to perform matching positioning on the bone plate, so as shown in fig. 8-10, the orthognathic surgery positioning guide plate 2 is matched with the matching bone plate 1 to form a positioning bone assembly, the positioning bone assembly comprises the matching bone plate 1, an implantation screw 4 and the orthognathic surgery positioning guide plate 2, the matching bone plate 1 is provided with a second screw hole 11 corresponding to a first screw hole 24, the matching bone plate 1 is arranged on a first positioning joint surface 21 of the orthognathic surgery positioning guide plate 2 and is installed corresponding to a bone plate positioning structure, and the implantation screw 4 is installed in the second screw hole 11 of the matching bone plate 1 through the first screw hole 24. Generally, before the orthognathic surgery positioning guide plate 2 is used for positioning the separated jawbone, the orthognathic surgery positioning guide plate 2 and the matched bone fracture plate 1 are assembled according to the above, after the separated jawbone is completed, the matched bone fracture plate 1 is positioned relative to the jawbone, then the matched bone fracture plate 1 is fixed on the early jawbone by using the implantation screw 4, and then the orthognathic surgery positioning guide plate 2 is removed.

The orthognathic surgery is mainly divided into two steps of osteotomy and bone setting, the above-mentioned osteotomy guide 3 and orthognathic surgery positioning guide 2 are mainly used for bone setting step, and osteotomy needs to utilize osteotomy guide 3, therefore, the whole set of patient matching orthognathic surgery instrument system still includes osteotomy guide 3, osteotomy guide 3 can adopt current osteotomy guide 3, in an embodiment of the present application, as shown in fig. 5-6, osteotomy guide 3 is provided with osteotomy groove 35 for guiding osteotomy and third screw hole 36 for fixing osteotomy guide 3 on the jawbone, the osteotomy groove 35 both sides of osteotomy guide 3 are connected through connecting bridge 34, osteotomy guide 3 has second positioning joint face 31 and second lateral face 32 opposite to second positioning joint face 31 with jawbone laminating location. The osteotomy guide 3 is used in the osteotomy step, after the osteotomy guide 3 is attached and fixed on the jaw face through the third screw hole 36 and the corresponding screw, the jaw is cut along the osteotomy groove 35 by using an osteotomy tool, the jaw is separated, and then the osteotomy guide 3 is fixed by using the bone plate after being repositioned and positioned by using the orthognathic operation positioning guide 2.

As mentioned in the background section, in the prior art, the hole is drilled in the bone surface during surgery to determine the position and direction of the hole entirely by the clinical experience of the doctor and by a high navigation aid system, and in order to overcome this problem, in the preferred embodiment of the present application, the second outer side 32 of the osteotomy plate 3 is provided with a drill guide ring 33 corresponding to the third screw hole 36. The drill guide ring 33 can provide a guide for the drill hole, thereby ensuring the accuracy of the position and direction of the screw hole on the jawbone.

When the matching bone plate 1, the implant screw 4 and the orthognathic surgery positioning guide plate 2 are combined, the implant screw 4 easily slides out of the screw hole, for this purpose, in the preferred embodiment of the present application, the first outer side 22 of the orthognathic surgery positioning guide plate 2 is provided with an anti-slip baffle ring 23 corresponding to the position of the first screw hole 24, the inner side of the anti-slip baffle ring 23 has a texture structure, and the head of the implant screw 4 is located in the anti-slip baffle ring 23 and contacts with the texture structure on the inner side of the anti-slip baffle ring 23, thereby preventing the implant screw 4 from sliding out.

The bone plate positioning structure is used for positioning the matched bone plate 1, and the concrete structure of the bone plate positioning structure can adopt a hole, a groove or a clamping structure and the like with form adaptation, and in the preferred embodiment of the application, the bone plate positioning structure is a bone plate mounting groove 25 matched with the peripheral outline of the matched bone plate 1, and the matched bone plate 1 is mounted in the bone plate mounting groove 25. Because the matching bone plate 1 is located on the first positioning fitting surface 21 side of the orthognathic surgery positioning guide plate 2, and the first positioning fitting surface 21 needs to be fitted to the positioning jaw surface, the influence on positioning the first positioning fitting surface 21 to the jaw surface can be reduced to the greatest extent while stable positioning of the matching bone plate 1 is achieved by adopting the bone plate mounting groove 25.

The application also discloses a manufacturing method of the patient matching orthognathic surgical instrument system, which comprises the following steps:

constructing a skull model of the patient;

designing a proper maxillofacial osteotomy line on the skull model according to the correction condition of a patient, and separating the jawbone through the osteotomy line;

the separated jawbone is moved to the desired corrected position in the pre-operative planning software,

designing a matched bone fracture plate 1 at an ideal position after correction, and designing a orthognathic surgery positioning guide plate 2 according to the matched bone fracture plate 1 and a jaw bone surface;

designing an osteotomy guide plate 3 on the head bone model of the patient without osteotomy according to the position of the osteotomy line;

and processing the designed matched bone fracture plate 1, orthognathic surgery positioning guide plate 2 and osteotomy guide plate 3 to obtain the product.

The construction of the skull model is generally to lead in CT data of the head of a patient in medical computer software, set a threshold dividing value as 220-230, and reconstruct the skull model of the patient, after the skull model is constructed, a proper maxillofacial osteotomy line can be designed according to the correction condition of the patient, and the osteotomy line has a gap of 0.5-0.6 mm and can separate bone surfaces;

after the separated jawbone is moved to an ideal correction position in preoperative planning software, the matched bone fracture plate 1 and the orthognathic operation positioning guide plate 2 can be designed, the matched bone fracture plate 1 can be designed according to the existing design method, as shown in fig. 1-2, the matched bone fracture plate 1 can be precisely attached to an adjusted bone fracture plate, a plurality of nail holes which can be matched with the required self-tapping screw specification are formed in the bone fracture plate, the thickness of the bone fracture plate is 0.4-2.0 mm, the number of bone fracture plate holes is 4-10 according to the requirement, the hole spacing is 4.0-5 mm, the aperture is 1.6-2.7 mm, and the chamfer angle is 45-50 degrees and is 0.3-0.5 mm; the orthognathic surgery positioning guide plate 2 is designed to ensure that the first screw hole 24 corresponds to the second screw hole 11 of the matched bone fracture plate 1, and can be attached to a fixed jawbone and a separated jawbone.

As shown in fig. 3-4, the orthognathic surgery positioning guide plate 2 can precisely position the adjusted position of the jawbone, is provided with a groove for placing the matched bone fracture plate 1, can precisely align the matched bone fracture plate 1 with the designed position before surgery, simultaneously aligns the second screw hole 11 on the matched bone fracture plate 1 with the bottom hole drilled by using the osteotomy guide plate 3, has a gap of 0.1mm-0.2mm between the matched bone fracture plate 1 and the bone fracture plate mounting groove 25, keeps the undercut less than 0.2mm, ensures that the matched bone fracture plate 1 can be smoothly placed on the orthognathic surgery positioning guide plate 2 and can not fall off, and the orthognathic surgery positioning guide plate 2 can also be provided with a screw anti-slip baffle ring 23 for placing screws, can place the required implantation screws 4 once and can not fall off in the surgery process, thereby reducing the tedious operation in the surgery.

As shown in fig. 5-6, after the design of the matched bone fracture plate 1 is completed, the design of the osteotomy guide plate 3 can be performed, mainly ensuring that the osteotomy guide plate 3 can precisely fit the bone surface before osteotomy, and simultaneously, the osteotomy groove 35 is aligned with the osteotomy line and connected as a whole by the connecting bridge 34.

In the preferred embodiment of the present application, when designing the osteotomy guide plate 3, the placement position of the bone plate needs to be confirmed when designing the matched bone plate 1, and when ensuring the hole size and the hole center distance of the second screw hole 11, the bone plate is designed to be as small as possible, the axial direction of the second screw hole 11 needs to be perpendicular to the bone surface as much as possible, and the reliability after the screw implantation is ensured. The hole center of the second screw hole 11 is spaced from the bone section by a distance of 2.5-3.5 mm.

In order to ensure that the orthognathic surgery positioning guide plate 2 can be accurately attached to a bone surface, the orthognathic surgery positioning guide plate has the functions of accurately guiding the installation of a bone plate and automatically aligning the jaw, when the orthognathic surgery positioning guide plate 2 is designed, the orthognathic surgery positioning guide plate 2 is designed by taking the jaw surface with an obvious concave-convex structure as a reference as far as possible, if the orthognathic surgery positioning guide plate 2 does not have a proper concave-convex structure, the area of the attaching surface of the guide plate can be properly increased, the orthognathic surgery positioning guide plate 2 can be rapidly and accurately positioned in operation, in addition, the orthognathic surgery positioning guide plate 2 is provided with a screw anti-skid baffle ring 23, the inner side of the orthognathic surgery positioning guide plate is provided with a texture structure, the placed screw can be prevented from slipping out, the wall thickness of the anti-skid baffle ring 23 is 0.5mm-1mm, the height of the orthognathic surgery positioning guide plate 2 is 4 mm-2.5mm.

In order to reduce drilling in the jawbone while ensuring a match of the surgical instrument system as a whole, in a preferred embodiment of the present application, the position and orientation of the second screw hole 11 of the matched bone plate 1 is determined on the non-osteotomy patient's skull model before designing the osteotomy guide 3, and the third screw hole 36 of the osteotomy guide 3 is designed according to the position and orientation of the second screw hole 11 on the non-osteotomy patient's skull model. The position and direction of the second screw hole 11 can be determined by using a virtual screw or directly adopting central axis data, for example, the central axis of the second screw hole 11 is attached to a non-osteotomy patient skull model, the central axis data of the screw hole and the jaw section processed in the step 3 are used as references at the position, the osteotomy guide plate 3 of the drilling guide ring 33, the central axis of the drilling guide ring 33 and the central axis of the screw hole of the bone plate are coincident, and the consistency of the actual implantation direction of the screw and the preoperative design is ensured; the same as the orthognathic surgery positioning guide plate 2, the osteotomy guide plate 3 also needs to comprise a obviously concave-convex structure which can be attached to the jawbone surface or a proper increase of the guide plate surface, so that the matching precision of the osteotomy guide plate 3 and the jawbone is improved, the accuracy of osteotomy and drilling is ensured, the height of the drilling guide ring 33 is 3-4mm, the wall thickness is 0.8-1.5mm, and the thickness of the osteotomy guide plate 3 is 1.5-2.5 mm.

As described in the background art, the prior art osteotomy plate has only a function of cutting off the jawbone, and has no function of cutting off the interference bone, and the position where the interference occurs after the bone surface is moved requires polishing and trimming in the doctor's operation, for which purpose, in the preferred embodiment of the present application, the jawbone area where the interference occurs during the movement is marked when the separated jawbone is moved to the desired correction position; when designing the osteotomy groove 35 of the osteotomy guide 3, the osteotomy groove 35 simultaneously removes the jaw region where interference occurs during movement. The osteotomy groove 35 is a jaw area for simultaneously removing interference, and is designed as a special-shaped osteotomy groove 35, namely, the special-shaped osteotomy groove 35 is determined by a planned osteotomy line and a bone section after interference removal.

The matching type bone fracture plate 1, the bone cutting guide plate 3 and the orthognathic surgery positioning guide plate 2 can adopt the existing machining mode after the design is completed, the 3D printing processing is preferably adopted in consideration of individual requirements, the matching type bone fracture plate 1 is preferably made of metal materials, and the orthognathic surgery positioning guide plate 2 is preferably made of metal materials or resin materials. Namely, the matched bone fracture plate 1 is processed by using a metal 3D printing technology; the osteotomy guide 3 and the orthognathic surgical positioning guide 2 are processed using resin 3D printing or metal 3D printing techniques. The metal material can be titanium or titanium alloy, and the resin material is photosensitive resin. The utility model adopts 3D printing technology to manufacture solid parts by CAD design data and adopting a material layer-by-layer accumulation method, and is a manufacturing method of material accumulation from bottom to top compared with the traditional material removal (cutting processing) technology. Compared with the traditional manufacturing technology, the additive manufacturing has the advantages of being capable of forming parts with complex shapes, high in forming precision, saving materials and the like. The additive manufacturing becomes the most popular manufacturing technology at present because the additive manufacturing can directly manufacture parts with compact structure and high precision, and is very suitable for manufacturing the matched surgical instrument system in the utility model.

The following will further describe the overall use of the patient-matched orthognathic surgical instrument system, after the matched bone plate 1, osteotomy guide 3, orthognathic surgical positioning guide 2 are prepared, the following operations are performed:

step 1: sterilizing and disinfecting the TC4 matched bone fracture plate 1, the resin osteotomy guide plate 3, the resin orthognathic surgery positioning guide plate 2 and the screws for later use;

step 2: after fully exposing a jawbone area to be corrected of a patient, enabling the joint surface of the osteotomy plate guide plate to be aligned with the exposed jawbone surface, wherein the joint surface of the osteotomy plate guide plate 3 is large enough and has obvious concave-convex structures corresponding to the jawbone surface, so that the osteotomy plate 3 can be easily aligned and not loosened, a drilling tool is used for pressing the osteotomy plate 3, the diameter of a drill bit is 1.4mm, the jawbone surface is drilled along a drilling guide ring 33, the drilling depth is 5mm, the osteotomy plate 3 is fixed on the jawbone by using self-tapping screws of the osteotomy plate guide plate 3 with the diameter of 1.5mm, then the osteotomy tool is used for osteotomy along two side walls of a special-shaped osteotomy groove 35, the connecting bridge 34 can be cut off together, and after the completion, the self-tapping screws are loosened to take down the osteotomy plate 3 for the next step;

step 3: the matched bone fracture plate 1 and the implanted screw 4 are arranged in the matched bone fracture plate mounting groove 2533 and the screw anti-slip baffle ring 23 on the orthognathic operation positioning guide plate 2, the orthognathic operation positioning guide plate 2 is firstly attached to the fixed jaw face through the attaching face of the orthognathic operation positioning guide plate 2, then the separated jaw is moved and aligned to the attaching face of the orthognathic operation positioning guide plate 2, the jaw position at the moment is the ideal correction position planned before operation, the attaching face of the bone fracture plate is correctly attached to the jaw face, the screw holes on the bone fracture plate are aligned to the holes on the jaw face, the implanted screw 4 is screwed into the jaw one by using a tool, at the moment, the screw heads are attached to the screw hole chamfer faces, the screw heads are slightly protruded from the matched bone fracture plate 1, a large number of screw protrusions are avoided, and finally the orthognathic operation positioning guide plate 2 is removed to finish the operation. The matched bone fracture plate 1 directly processed by the design does not need to be bent, and a series of problems caused by bending the bone fracture plate can be avoided.

Claims (10)

1. The orthognathic surgery positioning guide plate is characterized by comprising a first positioning joint surface (21) which is jointed and positioned with a jaw surface and a first outer side surface (22) which is opposite to the first positioning joint surface (21), wherein the first positioning joint surface (21) is provided with a first positioning area (211) which is matched and fixed with the jaw surface and a second positioning area (212) which is used for being matched and separated with the jaw, the first positioning joint surface (21) is provided with a bone plate positioning structure which is used for positioning a matched bone plate (1), and the orthognathic surgery positioning guide plate (2) is further provided with a first screw hole (24) which penetrates through the first positioning joint surface.

2. The orthognathic surgical positioning guide of claim 1, wherein: the anti-skid baffle ring (23) is arranged at the position, corresponding to the first screw hole (24), of the first outer side face (22) of the orthognathic surgery positioning guide plate (2), and the inner side of the anti-skid baffle ring (23) is provided with a texture structure.

3. The orthognathic surgical positioning guide of claim 2, wherein: the wall thickness of the anti-skid baffle ring (23) is 0.5mm-1mm, and the height is 4mm-5mm.

4. The orthognathic surgical positioning guide of claim 1, wherein: the bone fracture plate positioning structure is a bone fracture plate mounting groove (25) which is matched with the peripheral outline of the matched bone fracture plate (1).

5. The orthognathic surgical positioning guide of claim 1, wherein: the thickness is 2mm-2.5mm.

6. The positioning bone fracture assembly is characterized by comprising a matching bone fracture plate (1), an implantation screw (4) and the orthognathic surgery positioning guide plate (2) according to any one of claims 1-5, wherein the matching bone fracture plate (1) is provided with a second screw hole corresponding to the first screw hole (24), the matching bone fracture plate (1) is arranged on a first positioning joint surface (21) of the orthognathic surgery positioning guide plate (2) and is installed corresponding to a bone fracture plate positioning structure, and the implantation screw (4) is installed in the second screw hole of the matching bone fracture plate (1) through the first screw hole (24).

7. The positional bone assembly of claim 6, wherein: the thickness of the matched bone fracture plate (1) is 0.4mm-2.0mm, the number of the second screw holes is 4-10, the hole spacing is 4.0mm-5mm, and the aperture is 1.6mm-2.7mm.

8. The positional bone assembly of claim 6, wherein: the anti-skidding baffle ring (23) is arranged at the position, corresponding to the first screw hole (24), of the first outer side face (22) of the orthognathic surgery positioning guide plate (2), the inner side of the anti-skidding baffle ring (23) is provided with a texture structure, and the head of the implantation screw (4) is positioned in the anti-skidding baffle ring (23) and is contacted with the texture structure on the inner side of the anti-skidding baffle ring (23).

9. The positional bone assembly of claim 6, wherein: the bone fracture plate positioning structure is a bone fracture plate mounting groove (25) matched with the peripheral outline of the matched bone fracture plate (1), and the matched bone fracture plate (1) is mounted in the bone fracture plate mounting groove (25).

10. The positional bone assembly of claim 6, wherein: the matched bone fracture plate (1) is made of metal, and the orthognathic surgery positioning guide plate (2) is made of metal or resin.

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