Artificial jawbone

Abstract

An artificial jawbone, comprising fixing mounts (1), connecting members (2) and mandible supports (3), wherein the connecting members (2) are arranged on the fixing mounts (1); the upper end of each mandible support (3) is connected to a fixing mount (1) by means of a connecting member (2); each mandible support (3) comprises a mandibular ramus (31) and a mandibular body (32); each connecting member (2) is provided with an elongated hole (20) extending in a front-rear direction; a connecting column (311) is provided at the upper end of each mandibular ramus (31), and runs through an elongated hole (20); the upper end of each mandibular ramus (31) can rotate around a connecting column (311), and the connecting column (311) can slide in an elongated hole (20) in the lengthwise direction of the elongated hole (20), and can also slide in the elongated hole (20) in the axial direction of the connecting column (311); and each connecting column (311) is connected to the upper end of a mandibular ramus (31) at a proximal end, and has a limiting block (312) provided at a distal end thereof. The artificial jawbone can simulate and restore the elevation, depression, protraction, retraction and lateral movements of the mandible, and features a good functional recovery effect, stable connection, and resistance to dislocation.

Description

Artificial jaw bone

[0001] The application belongs to the technical field of mandibular defect repair, and particularly relates to an artificial jaw bone.

[0002] The mandible is a movable bone in the human skull, and the main function of the mandible is mastication, and the mandible is also an important part of supporting teeth and lips. The mandible is divided into a mandibular ramus (vertical part) and a mandibular body (horizontal part), and the two sides of the mandibular body are joined in the middle. Above the mandibular ramus, there are two bony protrusions, the posterior one is called the condylar process, and the anterior one is called the coronoid process (muscular process), and the concave edge between the two is called the mandibular incisure (sigmoid incisure). The mandible is connected with the temporal mandibular fossa through the condylar process. The condylar process, the temporal mandibular fossa and the articular tubercle form the temporomandibular joint. The 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 the condylar process of the existing artificial jaw bone and the temporal mandibular fossa and the articular tubercle is unstable and prone to dislocation, and the function recovery effect of the temporomandibular joint is poor.

[0004] The effects of far infrared physiotherapy mainly include the following aspects:

[0005] Therefore, it is necessary to improve.

[0006] The application aims to provide an artificial jaw bone which is stable in connection, not prone to dislocation and good in function recovery effect.

[0007] To achieve the above-mentioned purpose, the technical scheme adopted by the application is:

[0008] An artificial jaw bone comprises 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 being connected with the zygomatic arch of the human body, the connecting piece is provided with an elongated hole extending in the front-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 being disengaged from the elongated hole.

[0009] The artificial jawbone provided by the application has the beneficial effects that: compared with the prior art, the artificial jawbone comprises a fixing frame for connecting with the zygomatic arch of the human body, the upper end of the mandible support is movably connected with the fixing frame through a connecting piece, and specifically, the connecting piece is provided with an elongated hole extending in the front-rear direction, the upper end of the mandible branch of the mandible support is provided with a connecting column, and the connecting column is arranged in the elongated hole; first, the upper end of the mandible branch can rotate around the connecting column to simulate the lifting and lowering movement of the mandible; second, the connecting column can slide in the elongated hole in the length direction of the elongated hole to simulate the forward and backward movement of the mandible; and third, the connecting column can slide in the elongated hole in the axial direction of the connecting column to simulate the left and right lateral movement of the mandible. The distal end of the connecting column is provided with a limiting block, so that the connection between the mandible support and the fixing frame is stable and not prone to dislocation. In summary, the artificial jawbone provided by the application can simulate the lifting, lowering, forward, backward and left and right lateral movement of the mandible, has good functional recovery effect, and is stable in connection and not prone to dislocation.

[0010] In one of the embodiments, 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 behind the elongated hole, and the axis of the limiting block forms an angle with the length direction of the elongated hole.

[0011] In one of the embodiments, the mandible support is provided with a reserved hole connected with the masticatory muscle.

[0012] 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 screws are arranged on the second side wall.

[0013] In one of the embodiments, the surface of the bottom groove is provided with a hole structure for facilitating the growth of human tissues.

[0014] In one of the embodiments, 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 screws pass through the second positioning holes to connect the mandible body to the gum or artificial gum of the human body.

[0015] In one of the embodiments, a connecting piece is further arranged on the fixing frame, the fixing 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.

[0016] 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.

[0017] 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 mesial 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 mesial end.

[0018] 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.

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. 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 any creative labor based on these drawings. FIG. 1

[0020] The structure diagram of the artificial jawbone in one embodiment of the present application. FIG. 2

[0021] The structure diagram of the fixing frame and the connecting piece of the artificial jawbone in one embodiment of the present application. FIG. 3

[0022] The structure diagram of the artificial jawbone in another embodiment of the present application. FIG. 4

[0023] The structure diagram of the fixing frame of the artificial jawbone in one embodiment of the present application.

[0024] In the drawings, various reference signs represent:

[0025] 1, fixing frame; 10, mounting hole; 101, arc-shaped slot; 102, groove; 11, positioning column; 121, first side wall; 122, second side wall; 123, bottom wall;

[0026] 2, connecting piece; 200, positioning slot; 20, long hole; 21, insertion part; 22, step part; 221, anti-extraction part;

[0027] 3, mandible support; 31, mandibular part; 310, reserved hole; 311, connecting column; 312, limiting block; 32, mandibular body.

[0028] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals and characters throughout the figures denote the same or like components or elements having the same or similar functions. The embodiments described below are exemplary and intended to provide an explanation of the present application and are not intended to restrict the present application.

[0029] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are merely intended to facilitate the description of the present application and simplify 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 on the present application.

[0030] In addition, the terms "first", "second", and the like are used 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 explicitly specified and limited.

[0031] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, 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 internal communication of two elements or the 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.

[0032] As shown in FIG. 1 and FIG. 2, 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 to be connected with the zygomatic arch of the human body.

[0033] The mandible support 3 comprises a mandibular ramus part 31 and a mandibular body part 32. The mandibular ramus part 31 is used to simulate the functional morphology of the patient's mandibular ramus, support the patient's soft tissue, and restore the patient's facial morphology. The mandibular body part 32 is used to simulate the functional morphology of the patient's mandibular body, support the patient's mandibular soft tissue, restore the patient's facial morphology, and provide a support for subsequent functional repair such as bone grafting and tooth implantation of the patient in the future.

[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 branch 31 is provided with a connecting column 311 which is arranged in the elongated hole 20, and the upper end of the mandibular branch 31 can rotate around the connecting column 311. The connecting column 311 can slide in the elongated hole 20 along the length direction of the elongated hole 20, and the connecting column 311 can slide in the elongated hole 20 along the axial direction of the connecting column 311. The facial midline is an imaginary vertical line which divides the craniofacial part of the human body into two equal parts, the mesial direction refers to the direction closer to the facial midline, and the distal direction refers to the direction farther away from the facial midline. The mesial end of the connecting column 311 is connected with the upper end of the mandibular branch 31, and the distal end of the connecting column 311 is provided with a limiting block 312 which is used for preventing the connecting column 311 from being taken out of the elongated hole 20.

[0035] The artificial jaw provided by the present application comprises a fixing frame 1 for being connected with the zygomatic arch of the human body, and the upper end of the mandibular support 3 is movably connected with the fixing frame 1 through a connecting piece 2. Specifically, the connecting piece 2 is provided with an elongated hole 20 extending in the front-rear direction, and the upper end of the mandibular branch 31 of the mandibular support 3 is provided with a connecting column 311 which is arranged in the elongated hole 20. In the first aspect, the upper end of the mandibular branch 31 can rotate around the connecting column 311 to simulate the lifting and lowering movement of the mandible. In the second aspect, the connecting column 311 can slide in the elongated hole 20 along the length direction of the elongated hole 20 to simulate the forward and backward movement of the mandible. In the third aspect, the connecting column 311 can slide in the elongated hole 20 along the axial direction of the connecting column 311 to simulate the left and right lateral movement of the mandible. In the fourth aspect, since the diameter of the connecting column 311 is smaller than the width of the elongated hole 20, the connecting column 311 can not only move up and down along the width direction of the elongated hole, but also can form a certain inclination angle with the elongated hole 20 along the width direction, and the inclination angle is generally controlled within 0-20 degrees to make the mandible produce more complex movements such as tilting and swinging. The limiting block 312 is arranged at the distal end of the connecting column 311 to make the mandibular support 3 and the fixing frame 1 stably connected and not easy to be dislocated. In summary, the artificial jaw provided by the present application can rotate in the elongated hole and / or slide along the length or width direction of the elongated hole and / or swing along the width direction of the elongated hole to simulate the lifting, lowering, forward, backward, left and right lateral movement and swinging of the mandible, and the function recovery effect is good, the connection is stable, and the dislocation is not easy to occur.

[0036] In one of the embodiments, the fixing frame 1 is fixedly connected with the zygomatic arch of the human body through a screw.

[0037] In one of the embodiments, referring to the mandibular branch 31 of the mandibular support 3, the mandibular branch 31 is provided with a reserved hole 310 for the screw to be arranged therein, so that the mandibular branch 31 of the mandibular support 3 can be connected with the masseter muscle of the human body through the screw during the operation.

[0038] In one of the embodiments, referring to Figs. 1 and 2, the upper end of the fixing 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) to facilitate the growth of bone and flesh, so that the fixing frame 1 is more closely connected to the human body. The second side wall 122 is arranged on the distal side of the first side wall 121, and the second side wall 122 is provided with a plurality of first positioning protrusions 1221. The first positioning protrusions 1221 are used to mark the positions of the screws when the fixing frame 1 is connected to the zygomatic arch of the human body.

[0039] In one of the embodiments, the lower jaw body 32 of the mandible support 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 lower jaw body 32 is connected to the gum or artificial gum of the human body. The lower jaw 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 mandible support 3 is more closely connected to the human body.

[0040] In one of the embodiments, referring to Figs. 1 and 2, the fixing frame 1 is provided with a mounting hole 10, and the connecting piece 2 is provided with a plug-in portion 21 which matches the shape of the mounting hole 10, and the plug-in portion 21 is inserted into the mounting hole 10.

[0041] In one of the embodiments, referring to Figs. 1 and 2, 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 portion 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 a guiding and limiting role.

[0042] In one of the embodiments, the fixing frame 1 and the mandible support 3 are made of titanium alloy or other suitable metal materials, and the connecting piece 2 is made of plastic. Since friction between metals can generate powder, the connecting piece 2 in the present application is made of plastic or other elastic materials, and the fixing frame 1 and the mandible support 3 are connected through the connecting piece 2, which can effectively prevent the phenomenon of powder generated by friction, and the connecting piece 2 made of plastic has a certain elasticity.

[0043] In one of the embodiments, referring to the connecting piece 2, a stepped portion 22 is further arranged on the connecting piece 2, and a groove 102 for accommodating the stepped portion 22 is arranged on the fixing frame 1, an anti-extraction portion 221 with a triangular cross section is arranged on the upper end surface of the stepped portion 22, 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 in the groove 102, the anti-extraction portion 221 tightly abuts on 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, and 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.

[0044] According to different conditions of the mandibular defect of the patient, in the first example of the present application, as shown, the artificial jaw bone can include a unilateral (left or right) fixing frame 1, a connecting piece 2 and a mandibular support 3, and the original mandibular structure of the patient is still retained on the other side. In the second example of the present application, as shown, the artificial jaw bone can include a left fixing frame 1, a connecting piece 2 and a mandibular support 3, and a right fixing frame 1, a connecting piece 2 and a mandibular support 3.

[0045] The length of the mandibular support 3 can be flexibly set as required. With the facial midline of the human body as a reference, the length of the mandibular support 3 can extend from the mandibular ramus of the patient to the mandibular body, the facial midline. The length of the mandibular 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 mandibular support 3 can extend from the mandibular ramus of the patient to the mandibular body, the facial midline, beyond the facial midline and extend to the mandibular body on the other side.

[0046] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modifications, equivalent replacements and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

An artificial jawbone, characterized in that The application relates to a fixing frame and a mandible support, the upper end of the mandible support is connected with the fixing frame through a connecting piece, the fixing frame is used for being connected with the zygomatic arch of a human body, the fixing frame is provided with an elongated hole extending in the front-back direction, the corresponding position of the mandible support connected with the connecting piece is provided with a connecting column, the connecting column is arranged in the elongated hole, the mandible support can rotate in the elongated hole and / or slide along the length or width direction of the elongated hole and / or swing along the width direction of the elongated hole through the connecting column, and the free end of the connecting column is provided with a limiting block for preventing the connecting column from being pulled out of the elongated hole. The artificial jawbone according to claim 1, wherein 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. The artificial jawbone according to claim 1, wherein The mandible support is provided with a reserved hole connected with the masticatory muscle. The artificial jawbone according to claim 1, wherein 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 screw penetration are arranged on the second side wall. The artificial jawbone 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. The artificial jawbone according to 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. The artificial jawbone according to claim 1, wherein A connecting piece is arranged on the fixing frame, the fixing 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. The artificial jawbone according to claim 7, characterized in that A positioning column is arranged on the side wall of the mounting hole, and a positioning groove corresponding to the positioning column is arranged on the connecting piece, the positioning column is arranged in the positioning groove when the plug-in part is arranged in the mounting hole. The artificial jawbone according to claim 7, characterized in that A step part is arranged on the connecting piece, a groove for accommodating the step part is arranged on the fixing 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 arranged in the groove and the anti-pulling-out part is tightly arranged on the side wall of the groove when the plug-in part is arranged in the mounting hole from the distal end to the mesial end. The artificial jawbone according to claim 1, wherein The fixing frame and the mandible support are made of titanium alloy, and the connecting piece is made of plastic.

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