Lower jawbone reconstruction support

Abstract

The invention discloses a mandible reconstruction support, and relates to the technical field of mandible reconstruction. The mandible reconstruction support comprises a mandible outer contour supporting area and a bone grafting area, the mandible outer contour supporting area comprises a first mandible outer contour supporting area and a second mandible outer contour supporting area, and the mandible outer contour supporting area and the second mandible outer contour supporting area are located on the two sides of the mandible and used for achieving the stable supporting effect when the outer contour of the mandible is reconstructed; the bone grafting area is located on the front portion of the lower jawbone and used for playing a supporting role when the outer contour of the lower jawbone is reconstructed and providing shaping space and blood supply for bone powder implantation. Wherein the first mandible outer contour supporting area and the second mandible outer contour supporting area are inserted into the two sides of the bone grafting area respectively, so that the mandible reconstruction support matched with the mandible in shape is formed. According to the mandible reconstruction support, the mandible reconstruction support can be partitioned, and the regions are connected in an inserting mode, so that bone grafting through minimally invasive surgery is achieved, trauma is reduced, and the operation level and the operation risk are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of jaw reconstruction, and in particular to a mandible reconstruction support. BACKGROUND

[0002] Mandible reconstruction is an important surgery in oral and maxillofacial surgery and head and neck surgery. The mandible is the largest in volume and area among the bones of the human maxillofacial region, and is the only bone in the face that can move. As the main supporting structure of the facial contour, it has a complex shape and strong individual characteristics. Currently, mandibular defects caused by tumor resection, trauma and congenital deformity correction have become a common clinical disease. The facial defect caused by mandibular tumor resection after resection will seriously affect the appearance of the patient, and will also cause some functional abnormalities, which will seriously harm the patient's psychology. Mandibular defects will affect the patient's swallowing, language, mastication and other functions, and lead to facial deformity and reduce the quality of life.

[0003] The current common mandibular correction techniques have many deficiencies. Orthognathic surgery is a common correction method. It is suitable for severe mandibular deformities in adult patients after skeletal development, such as mandibular prognathism, retrognathism, and mandibular deviation. Although the effect is stable after using the orthognathic surgery, the facial function is improved, but the surgery needs preoperative orthodontics, that is, through 1-2 years of tooth alignment to eliminate dental compensatory deformities. At the same time, postoperative orthodontics is also needed, that is, fine adjustment of occlusion. Therefore, it needs long-term orthodontic cooperation, and the surgical trauma is large. Distraction osteogenesis is also a common correction method. It is suitable for children / adolescents with congenital mandibular dysplasia (such as hemifacial microsomia) or adults with severe bone defects or poor tissue conditions after radiotherapy. The distraction osteogenesis method can avoid bone grafting and can extend the bone, but the treatment cycle is long, up to 3-6 months. The risk of infection is high, and a second surgery is needed to remove the device.

[0004] Therefore, there is an urgent need for a mandibular reconstruction support technology to solve at least one of the above deficiencies. SUMMARY

[0005] To solve the above technical problems, the present application provides a mandibular reconstruction support. The mandibular reconstruction support can be partitioned, and the partitions are connected in a plug-in manner to realize bone grafting through minimally invasive surgery, reduce trauma, and reduce the level and risk of surgery.

[0006] The embodiment of the present application discloses a mandible reconstruction bracket, which comprises a mandible outer contour support area and a bone graft area, the mandible outer contour support area comprises a first mandible outer contour support area and a second mandible outer contour support area, and is located at both sides of the mandible, and is used for playing a stable supporting role when the mandible contour is reconstructed; the bone graft area is located at the front of the mandible, and is used for playing a supporting role when the mandible contour is reconstructed and providing a shaped space and blood supply for bone powder implantation; wherein the first mandible outer contour support area and the second mandible outer contour support area are respectively inserted into both sides of the bone graft area to form a mandible reconstruction bracket which is shaped to fit the mandible.

[0007] In a preferred embodiment of the present application, the bone graft area comprises a first bone graft area and a second bone graft area, the first bone graft area comprises a first bone graft convex part; the second bone graft area comprises a second bone graft first concave part; wherein the first bone graft convex part is inserted into the second bone graft first concave part to combine the first bone graft area and the second bone graft area together.

[0008] In a preferred embodiment of the present application, the bone graft area further comprises a bone graft space area and a bone surface contact area, the bone graft space area is located at the part of the bone graft area facing the oral cavity; the bone surface contact area is located at the lower part of the bone graft space area, and a bone screw fixing hole is formed on the bone surface contact area, which is used for fixing the bone graft area on the mandible.

[0009] In a preferred embodiment of the present application, the bone graft area further comprises a plurality of finger convex structures, the plurality of finger convex structures are located at the upper part of the bone graft area and are arranged at intervals to form a tent-shaped bracket structure, and each finger convex structure corresponds to a tooth root part.

[0010] In a preferred embodiment of the present application, the bone graft area further comprises a plurality of membrane nail fixing holes, the plurality of membrane nail fixing holes are located between the bone screw fixing hole and the finger convex structure, and are used for fixing the bone membrane, wherein the diameter of the membrane nail fixing hole is less than 1mm.

[0011] In a preferred embodiment of the present application, the mandible reconstruction bracket further comprises a drainage device, the drainage device is arranged on the inner side and the outer side of the mandible outer contour support area and the bone graft area, and is used for draining exudates in the wound during and after the operation.

[0012] In a preferred embodiment of the present application, the drainage device comprises a plurality of drainage holes and a plurality of drainage grooves, and the plurality of drainage holes are communicated through the plurality of drainage grooves.

[0013] In a preferred embodiment of the present application, the width of the drainage groove is 1mm, and the drainage hole is a square hole with a size of 2mm*2mm.

[0014] In a preferred embodiment of the present application, the first bone grafting area further comprises a first bone grafting concave part located on the opposite side of the first bone grafting convex part, and the second mandibular contour support area comprises a second mandibular anterior segment and a second mandibular posterior segment, the second mandibular anterior segment comprises a second mandibular anterior segment convex part, and the second mandibular posterior segment comprises a second mandibular posterior segment convex part and a second mandibular posterior segment concave part located on the opposite sides thereof; wherein the second mandibular anterior segment convex part is inserted into the second mandibular posterior segment concave part, and the second mandibular posterior segment convex part is inserted into the second bone grafting second concave part.

[0015] In a preferred embodiment of the present application, the first bone grafting area further comprises a first bone grafting concave part located on the opposite side of the first bone grafting convex part, and the second mandibular contour support area comprises a second mandibular anterior segment and a second mandibular posterior segment, the second mandibular anterior segment comprises a second mandibular anterior segment convex part, and the second mandibular posterior segment comprises a second mandibular posterior segment convex part and a second mandibular posterior segment concave part located on the opposite sides thereof; wherein the second mandibular anterior segment convex part is inserted into the second mandibular posterior segment concave part, and the second mandibular posterior segment convex part is inserted into the second bone grafting second concave part.

[0016] By adopting the technical scheme, the present application has at least the following beneficial effects:

[0017] The mandibular reconstruction support provided by the present application adopts the installation mode that multiple blocks are inserted together, can use minimally invasive bone grafting, has very small trauma, can be performed in an outpatient surgery, does not need general anesthesia, does not need hospitalization, and has low surgical risk.

[0018] The bone grafting space area and the multiple finger convex structures can be used to implant bone powder and enable the bone grafting to form a stable shape from the tooth root direction to the tooth crown direction, and the structure is natural and beautiful. Even if the mentalis labialis sulcus is too deep to affect the aesthetic appearance, the directional bone grafting of the alveolar bone can form a better mentalis labialis sulcus appearance, and can treat the symptoms of alveolar bone cracking, bone windowing, and gum atrophy. With the postoperative orthodontic movement of the tooth root to the bone grafting area, the normal occlusion relationship of the patient can be restored, and the bone grafting area can form a more stable new bone structure.

[0019] The drainage hole and the drainage groove can ensure that the exudate in the postoperative wound can be quickly and timely drained out, thereby reducing the postoperative reaction, enabling the patient to return home directly after the outpatient surgery, and reducing the occurrence of postoperative phenomena such as swelling and compression of the respiratory tract.

[0020] The drainage hole, especially the square hole, improves biocompatibility and facilitates the growth of new tissues, such as new bone formation or new ligament attachment.

[0021] The first bone grafting area, the second bone grafting area, the first anterior segment of the mandible, the first posterior segment of the mandible, the second anterior segment of the mandible and the second posterior segment of the mandible, the joint lines formed by the combination of these block areas correspond to certain nerve exits respectively, which can reduce the tension of the nerves during implantation. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0023] Figure 1 A structural diagram of a mandible reconstruction bracket provided by an embodiment of the present application Figure 1 ;

[0024] Figure 2 A structural diagram of a mandible reconstruction bracket provided by an embodiment of the present application Figure 2 ;

[0025] Figure 3 An exploded diagram of a mandible reconstruction bracket provided by an embodiment of the present application

[0026] Figure 4 A structural diagram of a mandible reconstruction bracket provided by an embodiment of the present application Figure 1 ;

[0027] Figure 5 A structural diagram of a mandible reconstruction bracket provided by an embodiment of the present application Figure 2 .

[0028] In the drawings, the reference signs are as follows:

[0029] 1, mandible outer contour support area; 11, first mandible outer contour support area; 111, first anterior segment of the mandible; 1111, first anterior segment of the mandible convex part; 112, first posterior segment of the mandible; 1121, first posterior segment of the mandible convex part; 1122, first posterior segment of the mandible concave part; 12, second mandible outer contour support area; 121, second anterior segment of the mandible; 1211, second anterior segment of the mandible convex part; 122, second posterior segment of the mandible; 1221, second posterior segment of the mandible convex part; 1222, second posterior segment of the mandible concave part;

[0030] 2. Bone grafting area; 21. First bone grafting area; 211. First bone graft protrusion; 212. First bone graft depression; 22. Second bone grafting area; 221. Second bone graft first depression; 222. Second bone graft second depression; 23. Bone grafting space area; 24. Bone surface contact area; 25. Bone screw fixation hole; 26. Finger-shaped convex structure; 27. Median screw fixation hole;

[0031] 3. Drainage device; 31. Drainage hole; 32. Drainage groove. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to specific examples and the accompanying drawings.

[0033] It should be noted that all uses of "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of the present invention. Subsequent embodiments will not explain this in detail.

[0034] Figures 1-5 This is used to illustrate the following embodiments. For example... Figures 1-5 As shown, some embodiments of the present invention disclose a mandibular reconstruction scaffold, which includes a mandibular outer contour support area 1 and a bone graft area 2. The mandibular outer contour support area 1 includes a first mandibular outer contour support area 11 and a second mandibular outer contour support area 12, and is located on both sides of the mandible, serving to provide stable support during the reconstruction of the mandibular outer contour. The bone graft area 2 is located in the anterior part of the mandible, serving to provide support during the reconstruction of the mandibular outer contour and to provide shaping space and blood supply for bone graft implantation; wherein, the first mandibular outer contour support area 11 and the second mandibular outer contour support area 12 are respectively inserted into both sides of the bone graft area 2 to form a mandibular reconstruction scaffold with a shape adapted to the mandible.

[0035] Specifically, the shape of the mandible reconstruction bracket as a whole is adapted to the entire mandible. The area filled with the entire mandible. The area of the mandibular outer contour support area 1 on one side of the face is the first mandibular outer contour support area 11, and the area on the other side of the face is the second mandibular outer contour support area 12. The bone grafting area 2 is arranged between the first mandibular outer contour support area 11 and the second mandibular outer contour support area 12. The first mandibular outer contour support area 11 and the second mandibular outer contour support area 12 are approximately symmetrically arranged relative to the bone grafting area, and the shapes are also similar. The bone grafting area 2 extends to the tooth root of the upper part of the head to form a natural overpass, and the entire mandible reconstruction bracket is very beautiful. The mandible reconstruction bracket is divided into multiple areas, and the areas are connected in a plug-in manner. The bone grafting can be performed using minimally invasive surgery, and the trauma is very small. The outpatient surgery can be performed, and general anesthesia is not required. The patient does not need to be hospitalized, and the surgical risk is low.

[0036] In particular, the plug-in can adopt a mortise and tenon structure.

[0037] In a preferred embodiment of the present application, the bone grafting area 2 comprises: a first bone grafting area 21 and a second bone grafting area 22. The first bone grafting area 21 comprises a first bone grafting convex portion 211; the second bone grafting area 22 comprises a second bone grafting first concave portion 221. Wherein, the first bone grafting convex portion 211 is inserted into the second bone grafting first concave portion 221 to combine the first bone grafting area 21 and the second bone grafting area 22 together.

[0038] Specifically, the bone grafting area 2 is located at the lower part of the mouth. In order to facilitate the operation and reduce the difficulty of the operation, it is divided into a first bone grafting area 21 and a second bone grafting area 22. The first bone grafting area 21 is located on one side of the face, and the side close to the second bone grafting area 22 protrudes outward by a part to form a first bone grafting convex portion 21. The second bone grafting area 22 is located on the other side of the face, and the side close to the first bone grafting area 21 is recessed inward relative to the position of the first bone grafting convex portion 21 to form a second bone grafting first concave portion 221, thereby forming an integral through plug-in. The bone grafting area 2 protrudes towards the direction away from the face to form an arc structure.

[0039] In a preferred embodiment of the present application, the bone grafting area 2 further comprises: a bone grafting space area 23 and a bone surface contact area 24, the bone grafting space area 23 is located at the part of the bone grafting area 2 facing the oral cavity; the bone surface contact area 24 is located at the lower part of the bone grafting space area 23, and the bone surface contact area 24 is provided with a bone screw fixing hole 25 for fixing the bone grafting area 1 to the mandible.

[0040] Specifically, the bone grafting space area 23 is a concave space, which can form a bone grafting space to help the bone powder grow. With the passage of time, the bone powder in the bone grafting space area 23 can gradually grow into the bone tissue behind the mandible. Under the bone grafting space area 23, a bone surface contact area 24 is arranged, the inside of the bone surface contact area 24 is flat, and a plurality of bone screw fixing holes 25 are arranged on the bone surface contact area 24, the bone grafting area is fixed to the mandible through the bone screw fixing holes 25. The area of the bone surface contact area 24 and the bone grafting space area 23 is almost the same.

[0041] Specifically, the number of the bone screw fixing holes 25 can be 2, 3 or more. The number is based on the area of the bone surface contact area 24. In addition, the diameter of the bone screw fixing hole 25 is generally 2-3 mm.

[0042] In a preferred embodiment of the present application, the bone grafting area 2 further comprises a plurality of finger-shaped structures 26, which are arranged on the upper part of the bone grafting space area 23 and are spaced apart to form a tent-shaped support structure, and each finger-shaped structure 26 corresponds to a tooth root.

[0043] Specifically, the finger-shaped structure 26 forms a shape similar to a finger. There can be a plurality of finger-shaped structures 26. In the entire bone grafting area 2, the plurality of finger-shaped structures 26 are located in the uppermost region of the bone grafting area 2, which extends upward and is spaced apart. The spacing between each other is slightly different, thereby forming a tent-shaped support structure. Each finger-shaped structure 26 points to the tooth root of a tooth, guiding the upward growth of the bone powder.

[0044] Specifically, the finger-shaped structure 26 is 7, of which 4 are arranged on the first bone grafting area 21 and 3 are arranged on the second bone grafting area 22.

[0045] In a preferred embodiment of the present application, the bone grafting area 2 further comprises a plurality of membrane nail fixing holes 27, which are arranged between the bone screw fixing holes 25 and the finger-shaped structures 26, and are used for fixing the bone membrane, wherein the diameter of the membrane nail fixing hole 27 is less than 1 mm.

[0046] Specifically, the membrane nail fixing holes 27 are usually arranged in rows near the lower side of the finger-shaped structure 26. The diameter of the membrane nail fixing hole 27 is much smaller than that of the bone screw fixing hole 25, and the density is higher. Thus, one end of the bone membrane is firmly fixed to the tooth root, and the other end is fixed to the membrane nail fixing hole 27.

[0047] Preferably, the diameter of the membrane nail fixing hole 27 is 1 mm or 0.8 mm. And the number of the membrane nail fixing hole 27 is 12, of which 6 are arranged on the first bone grafting area 21 and 6 are arranged on the second bone grafting area 22.

[0048] In a preferred embodiment of the present application, the mandible reconstruction bracket further comprises: drainage devices 3 arranged on the inner and outer sides of the mandible contour support area 1 and the bone graft area 2 for intraoperative and postoperative drainage of exudates in the wound.

[0049] Specifically, the drainage devices 3 are scattered throughout the mandible reconstruction bracket. The inner and outer sides of the mandible contour support area 1 and the bone graft area 2 are provided with drainage devices 3. The exudates in the wound after surgery need to be discharged in time, and the internal wound is also constantly exuding during the recovery period due to the patient's oral movement, which is not conducive to recovery. The arrangement of the drainage devices 3 can well solve these problems, ensure that the exudates in the wound after surgery can be quickly and timely drained, thereby reducing postoperative reactions, allowing patients to return home directly after outpatient surgery, and reducing the occurrence of postoperative swelling, compression of the respiratory tract and other phenomena.

[0050] In a preferred embodiment of the present application, the drainage devices 3 comprise: drainage holes 31 and drainage grooves 32, wherein the drainage holes 31 and the drainage grooves 32 are both multiple, and the multiple drainage holes 31 are connected by the drainage grooves 32.

[0051] Specifically, the drainage holes 31 are scattered in the mandible contour support area 1 and the bone graft area 2. The number is relatively large and the distribution is relatively dispersed, which is suitable for facilitating rapid drainage. Preferably, the drainage holes 31 are through holes. The drainage grooves 32 are arranged between adjacent drainage holes 31. The drainage grooves 32 can be arranged between all the drainage holes 31, or the drainage grooves 32 can be arranged between part of the drainage holes 31. The drainage grooves 32 are long strip-shaped grooves, which are distributed on the inner and outer sides of the mandible contour support area 1 and the bone graft area 2.

[0052] In a preferred embodiment of the present application, the width of the drainage groove 32 is 1mm, and the drainage hole 31 is a square hole with a size of 2mm*2mm.

[0053] Specifically, the drainage holes 31 are designed as square holes, which have three advantages, one of which is to facilitate drainage, the other is to facilitate fixation, and the other is to facilitate the growth of muscle tissue later, to ensure blood supply to the bone, interaction between tissues, and muscle penetration to the lower part. In addition, the width of the square hole and the drainage groove 32 is preferably the same to achieve stable drainage. The drainage hole 31, especially the square hole, improves biocompatibility, facilitates the growth of new tissue, such as new bone formation or new ligament attachment.

[0054] In a preferred embodiment of the present application, the first bone grafting area 21 further comprises a first bone grafting concave portion 212 located at the opposite side of the first bone grafting convex portion 211, and the first mandible outer contour supporting area 11 comprises a first mandible anterior segment 111 and a first mandible posterior segment 112, the first mandible anterior segment 111 comprises a first mandible anterior segment convex portion 1111, and the first mandible posterior segment 112 comprises a first mandible posterior segment convex portion 1121 and a first mandible posterior segment concave portion 1122 located at the opposite sides thereof, wherein the first mandible anterior segment convex portion 1111 is inserted into the first mandible posterior segment concave portion 1122, and the first mandible posterior segment convex portion 1121 is inserted into the first bone grafting concave portion 212.

[0055] Specifically, in order to reduce the difficulty of the surgery, the first mandible outer contour supporting area 11 can be further divided into two parts. This can also make the shape closer to the real mandible shape. The part of the first mandible outer contour supporting area 11 close to the first bone grafting area 21 is the first mandible posterior segment 112, and the part far away from the first bone grafting area 21 is the first mandible anterior segment 111. In order to facilitate the insertion, the first mandible posterior segment 112 is provided with a convex portion and a concave portion at the opposite sides thereof, the convex portion is referred to as the first mandible posterior segment convex portion 1121, and the concave portion is referred to as the first mandible posterior segment concave portion 1122. The first bone grafting area 21 is provided with the first bone grafting concave portion 212 corresponding to the first mandible posterior segment convex portion 1121. The first mandible anterior segment 111 is provided with the first mandible anterior segment convex portion 1111 corresponding to the first mandible posterior segment concave portion 1122. The first bone grafting area 21, the first mandible anterior segment 111 and the first mandible posterior segment 112 are connected together by inserting the first mandible anterior segment convex portion 1111 into the first mandible posterior segment concave portion 1122 and inserting the first mandible posterior segment convex portion 1121 into the first bone grafting concave portion 212.

[0056] Preferably, the insertion part of the first mandible anterior segment convex portion 1111 and the first mandible posterior segment concave portion 1122 and the insertion part of the first mandible posterior segment convex portion 1121 and the first bone grafting concave portion 212 each form a vertical joint line. The upper side of the joint line corresponds to the nerve exit, so as to reduce the tension of the nerve during implantation.

[0057] In a preferred embodiment of the present application, the second bone grafting area 22 further comprises a second bone grafting second recess 222 located on the opposite side of the second bone grafting first recess 221, and the second mandible outer contour support area 12 comprises a second mandible anterior segment 121 and a second mandible posterior segment 122, the second mandible anterior segment 121 comprises a second mandible anterior segment protrusion 1211, the second mandible posterior segment 122 comprises a second mandible posterior segment protrusion 1221 and a second mandible posterior segment recess 1222 located on the opposite sides thereof, wherein the second mandible anterior segment protrusion 1211 is inserted into the second mandible posterior segment recess 1222, and the second mandible posterior segment protrusion 1221 is inserted into the second bone grafting second recess 222.

[0058] Specifically, in order to reduce the difficulty of the surgery, the second mandible outer contour support area 12 can be further subdivided into two parts. This makes the shape closer to the actual shape of the mandible. The part of the second mandible outer contour support area 12 close to the second bone grafting area 22 is the second mandible posterior segment 122. The part of the second mandible outer contour support area 12 far away from the second bone grafting area 22 is the second mandible anterior segment 121. In order to facilitate the insertion, the second mandible posterior segment 122 is provided with a protrusion and a recess on the opposite sides thereof, the protrusion is referred to as the second mandible posterior segment protrusion 1221, and the recess is referred to as the second mandible posterior segment recess 1222. The second bone grafting area 22 is provided with the second bone grafting second recess 222 corresponding to the second mandible posterior segment protrusion 1221. The second mandible anterior segment 121 is provided with the second mandible anterior segment protrusion 1211 corresponding to the second mandible posterior segment recess 1222. The second bone grafting area 22, the second mandible anterior segment 121 and the second mandible posterior segment 122 are connected together by inserting the second mandible anterior segment protrusion 1211 into the second mandible posterior segment recess 1222 and inserting the second mandible posterior segment protrusion 1221 into the second bone grafting second recess 222.

[0059] Preferably, the insertion part of the second mandible anterior segment protrusion 1211 and the second mandible posterior segment recess 1222, and the insertion part of the second mandible posterior segment protrusion 1221 and the second bone grafting second recess 222 each form a vertical joint line. The upper side of the joint line corresponds to the nerve exit, so as to reduce the tension of the nerve during implantation.

[0060] The mandible reconstruction bracket of the present application adopts the installation mode of inserting multiple blocks together, which can be implanted using minimally invasive surgery, has very small trauma, and can be performed in an outpatient surgery without general anesthesia and hospitalization, and has low surgical risk.

[0061] The bone grafting space area 23 and the plurality of finger-shaped structures 26 can be used to fill more bone powder and enable the bone graft to form a stable shape from the direction of the tooth root to the direction of the tooth crown, and the structure is natural and beautiful. The bone grafting space area 23 and the plurality of finger-shaped structures 26 correspond to the compression groove bone defect of the lower anterior teeth, which can cause the mentolabial sulcus to be too deep. Even if the mentolabial sulcus is too deep to affect the aesthetic appearance, the method can form a better appearance of the mentolabial sulcus by directional bone grafting of the alveolar bone, and can treat the symptoms of alveolar bone cracking, bone windowing, and gum atrophy. With the postoperative orthodontic movement of the tooth root to the bone grafting area, the normal occlusion of the patient can be restored, and the bone grafting area can form a more stable new bone structure.

[0062] The drainage hole 31 and the drainage groove 32 can ensure that the exudate in the wound can be quickly and timely drained, thereby reducing postoperative reactions, allowing patients to return home directly after outpatient surgery, and reducing the occurrence of postoperative swelling, compression of the respiratory tract, and other phenomena.

[0063] The drainage hole 31, especially the square hole, improves biocompatibility and facilitates the growth of new tissues, such as new bone formation or new ligament attachment.

[0064] The junction lines formed by the junctions of the first bone grafting area 21, the second bone grafting area 22, the first mandibular anterior segment 111, the first mandibular posterior segment 112, the second mandibular anterior segment 121, and the second mandibular posterior segment 122 correspond to the nerve exits, which can reduce the tension on the nerves during implantation.

[0065] It should be particularly pointed out that each component or step in each of the above embodiments can be crossed, replaced, added, deleted, and therefore, the combinations formed by these reasonable permutations and combinations should also belong to the protection scope of the present application, and the protection scope of the present application should not be limited to the above-mentioned embodiments.

[0066] The above is an exemplary embodiment disclosed by the present application, and the sequence of the above-mentioned embodiments disclosed by the present application is only for description, and does not represent the advantages and disadvantages of the embodiments. However, it should be noted that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the embodiments disclosed by the present application (including claims) is limited to these examples, and various changes and modifications can be made without departing from the scope defined by the claims. The functions, steps and / or acts of the method claims described herein do not need to be performed in any particular order. In addition, although the elements disclosed in the embodiments of the present application can be described or claimed in singular form, they can also be understood as plural unless explicitly limited to singular.

[0067] Those skilled in the art should understand that the above discussion of any embodiment is only exemplary, and is not intended to mean that the scope of the embodiments disclosed by the present application (including claims) is limited to these examples; under the idea of the embodiments of the present application, the above embodiments or technical features among different embodiments can also be combined, and there are many other changes of different aspects of the embodiments of the present application as described above, which are not provided in details for the sake of brevity. Therefore, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application.

Claims

1. A mandibular reconstruction framework, characterized in that, include: The mandibular outer contour support area includes a first mandibular outer contour support area and a second mandibular outer contour support area, and is located on both sides of the mandible, and is used to provide stable support when reconstructing the mandibular outer contour. The bone graft area, located in the anterior part of the mandible, serves to provide support during the reconstruction of the outer contour of the mandible and to provide shaping space and blood supply for bone graft implantation. The first mandibular outer contour support area and the second mandibular outer contour support area are respectively inserted into both sides of the bone graft area to form a mandibular reconstruction framework with a shape adapted to the mandible.

2. The mandibular reconstruction framework according to claim 1, characterized in that, The bone graft area includes: The first bone graft area includes a first bone graft protrusion; The second bone graft area includes the first concave portion of the second bone graft. The first bone graft protrusion is inserted into the second bone graft concave portion to combine the first bone graft area and the second bone graft area together.

3. The mandibular reconstruction framework according to claim 1, characterized in that, The bone graft area also includes: Bone graft space area, the bone graft space area being located in the part of the bone graft area facing the oral cavity; The bone surface contact area is located at the lower part of the bone graft space area, and a bone screw fixing hole is provided thereon for fixing the bone graft area to the mandible.

4. The mandibular reconstruction framework according to claim 3, characterized in that, The bone graft area further includes: multiple finger-shaped structures, which are located on the upper part of the bone graft area and spaced apart to form a tent-shaped support structure, and each finger-shaped structure corresponds to a tooth root.

5. The mandibular reconstruction framework according to claim 4, characterized in that, The bone graft area also includes: membrane fixation holes, there are multiple membrane fixation holes, and they are located between the bone screw fixation holes and the finger-shaped structure, for fixing the periosteum, wherein the diameter of the membrane fixation holes is less than 1 mm.

6. The mandibular reconstruction framework according to claim 1, characterized in that, Also includes: A drainage device is provided on the inner and outer sides of the mandibular outer contour support area and the bone graft area for draining exudate from the wound during and after surgery.

7. The mandibular reconstruction framework according to claim 6, characterized in that, The drainage device includes: drainage holes and drainage channels, and there are multiple drainage holes and drainage channels, with the multiple drainage holes connected through the drainage channels.

8. The mandibular reconstruction framework according to claim 7, characterized in that, The width of the drainage groove is 1mm, and the drainage hole is a square hole with a size of 2mm*2mm.

9. The mandibular reconstruction framework according to claim 1, characterized in that, The first bone graft area also includes a first bone graft recess located on the opposite side of the first bone graft protrusion, and the first mandibular outer contour support area includes: The first anterior segment of the mandible, the first anterior segment of the mandible includes the anterior segment convexity of the first mandible; The first posterior segment of the mandible includes a convex portion and a concave portion of the first posterior segment of the mandible located on opposite sides thereon. Wherein, the anterior convex portion of the first mandible is inserted into the posterior concave portion of the first mandible, and the posterior convex portion of the first mandible is inserted into the first bone graft concave portion.

10. The maxillary bone reconstruction framework according to claim 1, characterized in that, The second bone graft area also includes a second bone graft second recess located on the opposite side of the second bone graft first recess, and the second mandibular outer contour support area includes: The anterior segment of the second mandible, which includes the anterior segment convexity of the second mandible; The second posterior segment of the mandible includes a convex portion of the second posterior segment of the mandible and a concave portion of the second posterior segment of the mandible located on opposite sides thereon. The anterior convex portion of the second mandible is inserted into the posterior concave portion of the second mandible, and the posterior convex portion of the second mandible is inserted into the second concave portion of the second bone graft.

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