Artificial jaw bone

Abstract

The utility model provides an artificial jawbone which comprises a fixing frame, a connecting piece and a mandible support, the connecting piece is arranged on the fixing frame, the upper end of the mandible support is connected with the fixing frame through the connecting piece, the mandible support comprises a mandible branch and a mandible body, the connecting piece is provided with a long hole extending in the front-back direction, and the lower end of the mandible support is connected with the fixing frame through the connecting piece. A connecting column is arranged at the upper end of the lower jaw branch part and penetrates through the long hole, the upper end of the lower jaw branch part can rotate around the connecting column, the connecting column can slide in the long hole in the length direction of the long hole and can slide in the long hole in the axial direction of the connecting column, and the near-middle end of the connecting column is connected with the upper end of the lower jaw branch part; a limiting block is arranged at the far middle end of the connecting column. The artificial jaw bone has the advantages that the artificial jaw bone can simulate lifting, descending, advancing, retreating and left-right lateral movement of the lower jaw, the function recovery effect is good, connection is stable, and dislocation is not prone to occurring.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mandible defect repair technical field, especially relate to a kind of artificial jaw. BACKGROUND

[0002] Mandible is the bone with activity in human skull, and the main function of mandible is mastication, and it is also an important component of supporting teeth and lips.Mandible is divided into mandibular branch (vertical part) and mandibular body (horizontal part), and two sides of mandibular body are united in the middle.The upper of mandibular branch has two bony protrusions, and the one in the rear is called condylar process, and the one in the front is called coronoid process (muscular process), and the concave edge between the two is called mandibular incisure (sigmoid incisure).Mandible is connected with temporal bone mandibular fossa through condylar process.Condylar process, temporal bone mandibular fossa and articular tubercle form temporomandibular joint.Temporomandibular joint is a ball-and-socket joint, which allows the mandible to realize lifting, lowering, advancing, retreating and left and right lateral movement.

[0003] The connection between condylar process of existing artificial jaw and temporomandibular joint is unstable, and it is easy to dislocate, so the function recovery effect of temporomandibular joint is poor.

[0004] Therefore, it is necessary to improve. UTILITY MODEL CONTENT

[0005] The utility model aims at providing an artificial jaw with stable connection, not easy to dislocate and good function recovery effect.

[0006] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0007] An artificial jaw, comprising a fixing frame, a connecting piece and a mandibular support, the connecting piece is arranged on the fixing frame, the upper end of the mandibular support is connected with the fixing frame through the connecting piece, the fixing frame is used for connecting with the zygomatic arch of human body, the connecting piece is provided with an elongated hole extending along the front and rear direction, the corresponding position of the mandibular support connected with the connecting piece is provided with a connecting column, the connecting column is arranged in the elongated hole, the mandibular support rotates around the connecting column, the connecting column can slide along the length direction of the elongated hole and along the axial direction of the connecting shaft, and the free end of the connecting column is provided with a limiting block for preventing the connecting column from dislocating from the elongated hole.

[0008] The artificial jawbone has the advantages that compared with the prior art, the artificial jawbone can simulate and restore the lifting, lowering, advancing, retreating and left and right lateral movements of the lower jaw, has good functional recovery effect, is stable in connection and not prone to dislocation.

[0009] In one of the embodiments, the width of the limiting block is adapted to the width of the long hole, the length of the limiting block is greater than the width of the long hole, the connecting column is arranged behind the long hole, and the axis of the limiting block forms an angle with the length direction of the long hole.

[0010] In one of the embodiments, the lower jaw support is provided with a reserved hole connected with the masticatory muscle.

[0011] In one of the embodiments, the upper end of the fixing frame is provided with an arc-shaped groove for accommodating the zygomatic arch of the human body, the shape of the arc-shaped groove is matched with the zygomatic arch, the arc-shaped groove has a first side wall, a bottom groove and a second side wall, the second side wall and the first side wall are respectively arranged on the two sides of the bottom groove, and a plurality of positioning holes for connecting the fixing frame to the zygomatic arch of the human body through the screw are arranged on the second side wall.

[0012] In one of the embodiments, the surface of the bottom groove is provided with a hole structure for facilitating the growth of the human tissue.

[0013] In one of the embodiments, the lower jaw support comprises a lower jaw support part and a lower jaw main body, the lower jaw main body of the lower jaw support part is provided with a plurality of second positioning holes, and the lower jaw main body is connected to the gum or artificial gum of the human body through the second positioning holes.

[0014] In one of the embodiments, a connecting piece mounted on the fixing frame is further arranged, the fixing frame is provided with a mounting hole for inserting the connecting piece, the connecting piece is provided with a plug-in part, the shape of the plug-in part is matched with the mounting hole, the plug-in part is inserted into the mounting hole, and the long hole is arranged on the connecting piece.

[0015] In one of the embodiments, the side wall of the mounting hole is provided with a positioning column, and the connecting piece is further provided with a positioning slot corresponding to the position of the positioning column, and the positioning column is inserted into the positioning slot when the insertion part is inserted into the mounting hole.

[0016] In one of the embodiments, the connecting piece is further provided with a step part, the fixing frame is provided with a groove for accommodating the step part, the upper end surface of the step part is provided with an anti-extraction part with a triangular cross section, the thickness of the anti-extraction part gradually increases from the proximal end to the distal end, and the step part is embedded into the groove and the anti-extraction part is tightly attached to the side wall of the groove when the insertion part is inserted into the mounting hole from the distal end to the proximal end.

[0017] In one of the embodiments, the fixing frame and the mandible support are made of titanium alloy, and the connecting piece is made of plastic. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 It is a structural schematic view of the artificial jawbone of one embodiment of the present application.

[0020] Figure 2 It is a structural schematic view of the fixing frame and the connecting piece of the artificial jawbone of one embodiment of the present application.

[0021] Figure 3 It is a structural schematic view of the artificial jawbone of another embodiment of the present application.

[0022] Figure 4 It is a structural schematic view of the fixing frame of the artificial jawbone of one embodiment of the present application.

[0023] In the drawings, various reference signs represent:

[0024] 1, fixing frame; 10, mounting hole; 101, arc-shaped groove; 102, groove; 11, positioning column; 121, first side wall; 122, second side wall; 123, bottom wall;

[0025] 2, connecting piece; 200, positioning slot; 20, long hole; 21, insertion part; 22, step part; 221, anti-extraction part;

[0026] 3, mandible support; 31, mandibular part; 310, reserved hole; 311, connecting column; 312, limiting block; 32, mandibular body. DETAILED DESCRIPTION

[0027] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0028] In the description of the present application, it is understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0029] In addition, the terms "first", "second", and the like are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", and the like can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0030] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] As shown in Figures 1-3 The artificial jaw provided by the present application comprises a fixing frame 1, a connecting piece 2 and a mandible support 3. The connecting piece 2 is arranged on the fixing frame 1, and the upper end of the mandible support 3 is movably connected with the fixing frame 1 through the connecting piece 2. The fixing frame 1 is used for being connected with the zygomatic arch of the human body.

[0032] The mandible support 3 comprises a mandibular ramus 31 and a mandibular body 32.

[0033] The connecting piece 2 is provided with an elongated hole 20 extending in the front-rear direction, and the upper end of the mandibular ramus 31 is provided with a connecting column 311 which is arranged in the elongated hole 20, and the upper end of the mandibular ramus 31 can rotate around the connecting column 311.

[0034] The connecting piece 2 is provided with an elongated hole 20 extending in the front-rear direction, and the upper end of the mandibular ramus 31 is provided with a connecting column 311 which is arranged in the elongated hole 20, and the upper end of the mandibular ramus 31 can rotate around the connecting column 311.

[0035] In one of the embodiments, the fixed frame 1 is fixedly connected with the zygomatic arch of the human body by screws.

[0036] In one of the embodiments, referring to Figure 3 , the mandibular part 31 of the mandibular frame 3 is provided with a reserved hole 310 for screwing, so as to connect the mandibular part 31 of the mandibular frame 3 with the masseter muscle of the human body by screws during the operation.

[0037] In one of the embodiments, referring to Figure 3 and Figure 4 , the upper end of the fixed frame 1 is provided with an arc-shaped slot 101 for accommodating the zygomatic arch of the human body, and the shape of the arc-shaped slot 101 matches the zygomatic arch. The arc-shaped slot 101 has a first side wall 121, a bottom wall 123 and a second side wall 122. The surface of the bottom wall 123 is provided with a hole structure (not shown in the figure), which facilitates the growth of bone and flesh, so that the connection between the fixed frame 1 and the human body is more close. The second side wall 122 is arranged on the distal side of the first side wall 121, and a plurality of first positioning protrusions 1221 are arranged on the second side wall 122. The first positioning protrusions 1221 are used to mark the positions of the screws when the fixed frame 1 is connected to the zygomatic arch of the human body.

[0038] In one of the embodiments, the mandibular main body 32 of the mandibular frame 3 is also provided with a plurality of second positioning protrusions (not shown in the figure), which are used to mark the positions of the screws when the mandibular main body 32 is connected to the gum or artificial gum of the human body. The mandibular main body 32 is provided with an array of through holes (not shown in the figure), which can facilitate the growth of bone and flesh, so that the connection between the mandibular frame 3 and the human body is more close.

[0039] In one of the embodiments, referring to Figure 1 and Figure 2 , the fixed frame 1 is provided with a mounting hole 10, and the connecting piece 2 is provided with a plug-in part 21, the shape of which matches the mounting hole 10, and the plug-in part 21 is inserted into the mounting hole 10.

[0040] In one of the embodiments, referring to Figure 2 , the edge of the mounting hole 10 is provided with a positioning column 11, and the connecting piece 2 is further provided with a positioning groove 200 corresponding to the position of the positioning column 11, and when the plug-in part 21 is inserted into the mounting hole 10, the positioning column 11 is inserted into the positioning groove 200. During assembly, the positioning column 11 and the positioning groove 200 play the role of guiding and limiting.

[0041] In one of the embodiments, the fixing frame 1 and the mandible support 3 are made of titanium alloy or other suitable metal material, and the connecting piece 2 is made of plastic. Since the friction between metals will generate powder, the connecting piece 2 in the utility model is made of plastic or other elastic material, and the fixing frame 1 and the mandible support 3 are connected through the connecting piece 2, so that the phenomenon of powder generated by friction can be effectively prevented, and the connecting piece 2 made of plastic has a certain elasticity.

[0042] In one of the embodiments, referring to Figure 2 , the connecting piece 2 is further provided with a stepped portion 22, the fixing frame 1 is provided with a groove 102 for accommodating the stepped portion 22, the upper end surface of the stepped portion 22 is provided with an anti-extraction portion 221 with a triangular cross section, the thickness of the anti-extraction portion 221 gradually increases from the mesial end to the distal end, when the insertion portion 21 is inserted into the mounting hole 10 from the distal end to the mesial end, the stepped portion 22 is embedded into the groove 102, and the anti-extraction portion 221 tightly abuts against the side wall of the groove 102. The anti-extraction portion 221 can increase the friction between the stepped portion 22 and the groove 102, so as to prevent the assembled connecting piece 2 from falling off from the fixing frame 1. When the connecting piece 2 needs to be replaced due to aging or wear, the connecting piece 2 can be cut open, and the connecting piece 2 can be taken down and replaced with a new connecting piece.

[0043] According to the different conditions of the mandibular defects of the patient, in the first example of the utility model, as shown in Figure 1 , the artificial jaw bone can include a unilateral (left or right) fixing frame 1, a connecting piece 2 and a mandible support 3, and the original mandibular structure of the patient is still retained on the other side. In the second example of the utility model, as shown in Figure 3 , the artificial jaw bone can include a left fixing frame 1, a connecting piece 2, a mandible support 3, a right fixing frame 1, a connecting piece 2 and a mandible support 3.

[0044] The length of the mandible support 3 can be flexibly set as required. Taking the facial midline of the human body as a reference, the length of the mandible support 3 can extend from the mandibular ramus of the patient to the mandibular body and the facial midline. The length of the mandible support 3 can extend from the mandibular ramus of the patient to the mandibular body but not reach the facial midline. The length of the mandible support 3 can extend from the mandibular ramus of the patient to the mandibular body, the facial midline and the mandibular body on the other side beyond the facial midline.

[0045] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An artificial jawbone, characterized in that, The application relates to a jawbone support device, which comprises a fixed frame and a mandible support, the upper end of the mandible support being connected with the fixed frame through a connecting piece, the fixed frame being used for being connected with the zygomatic arch of a human body, the fixed frame being provided with an elongated hole extending in the front-back direction, the corresponding position of the mandible support connected with the connecting piece being provided with a connecting column, the connecting column being arranged in the elongated hole, the mandible support being capable of rotating in the elongated hole and / or sliding along the length or width direction of the elongated hole and / or swinging along the width direction of the elongated hole through the connecting column, and the free end of the connecting column being provided with a limiting block for preventing the connecting column from being pulled out of the elongated hole.

2. Artificial jaw bone according to claim 1, characterized in that The width of the limiting block is adapted to the width of the elongated hole, the length of the limiting block is greater than the width of the elongated hole, the connecting column is arranged in the elongated hole, and the axis of the limiting block is at an angle with the length direction of the elongated hole.

3. The artificial jaw bone according to claim 1, wherein, The mandible support is provided with a reserved hole connected with the masticatory muscle.

4. The artificial jaw bone according to claim 1, wherein The upper end of the fixed frame is provided with an arc-shaped groove for accommodating the zygomatic arch of the human body, the shape of the arc-shaped groove is matched with the zygomatic arch, the arc-shaped groove has a first side wall, a bottom groove and a second side wall, the second side wall and the first side wall are respectively arranged on the two sides of the bottom groove, and a plurality of positioning holes for connecting the fixed frame to the zygomatic arch of the human body through screw penetration are arranged on the second side wall.

5. Artificial jaw bone according to claim 4, characterized in that A hole structure is arranged on the surface of the bottom groove for facilitating the growth of human tissues.

6. The artificial jaw bone of claim 1, wherein, The mandible support comprises a mandible branch and a mandible body, the mandible body of the mandible branch is provided with a plurality of second positioning holes, and a screw is arranged to pass through the second positioning holes to connect the mandible body to the gum or artificial gum of the human body.

7. The artificial jaw bone of claim 1, wherein, A connecting piece is arranged on the fixed frame, the fixed frame is provided with a mounting hole for arranging the connecting piece, the connecting piece is provided with a plug-in part, the shape of the plug-in part is matched with the mounting hole, the plug-in part is arranged in the mounting hole, and the elongated hole is arranged on the connecting piece.

8. Artificial jaw according to claim 7, characterized in that A positioning column is arranged on the side wall of the mounting hole, a positioning groove corresponding to the positioning column is further arranged on the connecting piece, and the positioning column is arranged in the positioning groove when the plug-in part is arranged in the mounting hole.

9. The artificial jaw bone according to claim 7, characterized in that A step part is further arranged on the connecting piece, a groove for accommodating the step part is arranged on the fixed frame, the upper end surface of the step part is provided with a triangular anti-pulling-out part, the thickness of the anti-pulling-out part gradually increases from the mesial end to the distal end, the step part is embedded in the groove when the plug-in part is inserted into the mounting hole from the distal end to the mesial end, and the anti-pulling-out part is tightly attached to the side wall of the groove.

10. The artificial jaw bone of claim 1, wherein, The fixed frame and the mandible support are made of titanium alloy, and the connecting piece is made of plastic.

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