Craniomaxillofacial bone fracture plate based on PEEK material and preparation system thereof

Abstract

The invention discloses a cranio-maxillofacial bone fracture plate based on a PEEK material and a preparation system thereof.The cranio-maxillofacial bone fracture plate based on the PEEK material comprises a first bone fracture plate body and a plurality of second bone fracture plate bodies, the second bone fracture plate bodies and the first bone fracture plate body are assembled to form the needed cranio-maxillofacial bone fracture plate, and the first bone fracture plate body and the second bone fracture plate body are assembled to form the required cranio-maxillofacial bone fracture plate based on the PEEK material. The first bone fracture plate comprises a first bone fracture plate body, a pair of first connecting plates are integrally formed at the two ends of the first bone fracture plate body, and connecting columns are rotationally installed at the upper ends and the lower ends of the pair of first connecting plates. When the first bone fracture plate provided by the invention is connected with the second shift connecting plate, and the second connecting plate sleeves the connecting column through the sleeving hole, the clamping assembly on the connecting column can be clamped in the clamping groove in the sleeving hole, so that the connection between the second connecting plate and the connecting column is stable; therefore, when the first bone fracture plate and the second bone fracture plate are connected, operation is convenient, and meanwhile stability after connection is good.

Description

Technical Field

[0001] The invention belongs to the technical field of craniomaxillofacial bone fracture plates, and in particular relates to a craniomaxillofacial bone fracture plate based on a PEEK material and a preparation system thereof. Background Art

[0002] In craniomaxillofacial orthopedic surgery, it is usually necessary to use craniomaxillofacial bone plates and bone screws to fix the craniomaxillofacial bone fracture sites.

[0003] The craniomaxillofacial plate disclosed in the publication number CN109965967B includes a No. 1 plate, a No. 2 plate, a No. 3 plate, a fastening sleeve, a No. 1 positioning ring, and a No. 2 positioning ring. With the cooperation of the fastening sleeve, the No. 1 positioning ring, and the No. 2 positioning ring, the No. 1 plate is more firmly connected with the No. 2 plate and the No. 3 plate, and the overall structure is more reasonable. At the same time, the No. 1 plate, the No. 2 plate, and the No. 3 plate are connected by the fastening sleeve, and the No. 1 plate, the No. 2 plate, and the No. 3 plate can be rotated on the fastening sleeve at the same time, and different angles can be adjusted according to the actual situation of the craniomaxillofacial bone fracture site, which greatly saves the operation time, is very convenient to use, and makes the overall structure more reasonable.

[0004] When the craniomaxillofacial plate disclosed in the above patent is used, the operation of connecting the plates is complicated and the stability after the connection is poor, so there is still room for improvement of the plate.

[0005] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0006] The object of the present invention is to provide a craniomaxillofacial bone plate based on PEEK material and a preparation system thereof, which can solve the problems of cumbersome operation when connecting bone plates and poor stability after connection.

[0007] In order to achieve the above object, a technical solution provided by a specific embodiment of the present invention is as follows:

[0008] The craniomaxillofacial plate based on PEEK material includes a first plate and a second plate, wherein the second plate is provided in plurality, and the plurality of the second plates and the first plate are assembled into a required craniomaxillofacial plate. When the patient has a severe fracture at the craniomaxillofacial bone and needs to fix the fracture site with a plurality of plates, the plurality of second plates are assembled on the first plate, so that the first plate and the second plate are assembled into the required craniomaxillofacial plate to fix the fracture site of the patient. Specifically:

[0009] The first bone plate includes a first bone plate body, and a pair of first connecting plates are integrally formed at both ends of the first bone plate body. The first bone plate and the second bone plate can be connected together by the first connecting plates arranged at both ends of the first bone plate body. The upper and lower ends of the pair of first connecting plates are both rotatably mounted with connecting columns, so that the connecting columns can rotate relative to the first connecting plates. When the connecting columns are mounted on the first connecting plates, the stability and strength of the connecting columns after installation need to be ensured while ensuring the rotation of the connecting columns. A plurality of clamping assemblies are installed on the side walls of the connecting columns, and the connection between the first bone plate and the second bone plate is fixed by the plurality of clamping assemblies on the side walls of the connecting columns.

[0010] The second bone plate comprises a second bone plate body, one end of which is integrally formed with a second connecting plate, and the first bone plate and the second bone plate can be connected together by the cooperation of the second connecting plate and the first connecting plate arranged at one end of the second bone plate body. A sleeve hole is provided at the center of the second connecting plate in a through manner, and the second connecting plate is sleeved on the corresponding connecting column through the sleeve hole, and the second connecting plate and the first connecting plate can be connected together by sleeved on the connecting column, so as to facilitate the connection of the first bone plate and the second bone plate. A plurality of snap-in grooves matching with a plurality of snap-in assemblies are provided on the inner side wall of the sleeve hole, so that the second connecting plate and the connecting column can be fixed together by the cooperation of the plurality of snap-in assemblies on the connecting column and the plurality of snap-in grooves on the inner side wall of the sleeve hole, so that the connection between the second connecting plate and the connecting column is stable.

[0011] In one or more embodiments of the present invention, the thickness of the first bone plate body is the same as the thickness of the second bone plate body, so that the bone plate assembled by the first bone plate and the second bone plate has better stability when fixing the fracture site. The thickness of the first connecting plate is set to 1 / 3 of the thickness of the first bone plate body, and the upper and lower surfaces of the first connecting plate are at the same distance from the upper and lower surfaces of the first bone plate body, so that the upper and lower ends of the first connecting plate are used to install the second bone plate. The surface of the connecting column away from the first connecting plate is flush with the surface of the first bone plate body, so that the setting of the connecting column will not affect the thickness of the assembled bone plate.

[0012] In one or more embodiments of the present invention, the thickness of the second connecting plate is set to 1 / 3 of the thickness of the second plate body, and the surface of one side of the second connecting plate is flush with the surface of one side of the second plate body, so that when the second connecting plate is sleeved on the connecting column through the sleeve hole, the surfaces of the first plate body and the first connecting plate are on the same horizontal line, which improves the practicality of the assembled plate. A first contact portion is provided at the connection between the first plate body and the first connecting plate, and the first contact portion matches the second connecting plate. A second contact portion is provided at the connection between the second plate body and the second connecting plate, and the second contact portion matches the first connecting plate. The first contact portion and the second contact portion make the connection completely fit after the first plate and the second plate are assembled. At the same time, in order to avoid the entry of body fluids and the like into the connection, which causes contamination by residual impurities and the like at the connection, the complete fit of the first plate and the second plate after assembly makes the connection tightly sealed.

[0013] In one or more embodiments of the present invention, the clamping assembly includes a mounting groove, the mounting groove is provided on the side wall of the connecting column, and a clamping rod is slidably connected in the mounting groove, so that the clamping rod can move in the mounting groove. A compression spring is sleeved on the side wall of one end of the clamping rod placed in the mounting groove, and the compression spring provides a pushing force to the clamping rod outward, so that one end of the clamping rod can be pushed to the outside of the mounting groove. The end of the clamping rod placed outside the mounting groove is placed in the clamping groove, so that one end of the clamping rod is placed in the clamping groove, and the other end of the clamping rod is placed in the mounting groove, so that the second connecting plate is stable when it is sleeved on the connecting column under the action of the clamping rod in the second connecting plate and the connecting column.

[0014] In one or more embodiments of the present invention, a first limiting ring is integrally formed on the side wall of the clamping rod placed in the installation groove, and the outer diameter of the first limiting ring matches the inner diameter of the installation groove, so that when the clamping rod moves in the installation groove, it can drive the first limiting ring to slide in the installation groove, and at the same time, due to the cooperation between the outer wall of the first limiting ring and the inner wall of the installation groove, the sliding of the clamping rod in the installation groove is stable. A second limiting ring is fixedly connected to the inner wall of the installation groove located at one end of the outer side of the connecting column, and the inner diameter of the second limiting ring matches the outer diameter of the clamping rod, so that when the clamping rod slides in the installation groove through the inner ring of the second limiting ring, the cooperation of the first limiting ring and the second limiting ring can limit the moving distance of the clamping rod in the installation groove, thereby preventing the clamping rod from falling out of the installation groove.

[0015] In one or more embodiments of the present invention, a wedge-shaped portion is provided at one end of the clamping rod placed in the clamping groove, and a rounded portion is provided at the edge of the sleeve hole on one side of the side wall of the first connecting plate where the second connecting plate abuts, and the rounded portion matches the wedge-shaped portion. When the second connecting plate is sleeved on the connecting column, as the second connecting plate moves downward on the connecting column, the contact between the rounded portion and the wedge-shaped portion allows the second connecting plate to squeeze the clamping rod back into the installation groove through the wedge-shaped portion.

[0016] In one or more embodiments of the present invention, a pair of limiting grooves are opened on the outer wall of the connecting column, and a pair of limiting protrusions are integrally formed on the side wall of the sleeve hole, and the pair of limiting protrusions are respectively slidably connected to the pair of limiting grooves, so that when the second connecting plate is sleeved on the connecting column, the position of the installation groove corresponds to the position of the clamping groove, so as to ensure that the clamping rod can extend into the clamping groove. By cooperating with the limiting groove and the limiting protrusion, the position of the second connecting plate sleeved on the connecting column can be guided to prevent relative rotation between the second connecting plate and the connecting column, so as to ensure the correspondence between the positions of the installation groove and the clamping groove.

[0017] In one or more embodiments of the present invention, a first screw hole is provided at the center of the first bone plate body, and the screw can fix the first bone plate to the craniomaxillofacial bone through the first screw hole. A second screw hole is provided at one end of the second bone plate body away from the second connecting plate, and the screw can fix the second bone plate to the craniomaxillofacial bone through the second screw hole. The first screw hole and the second screw hole are provided with a plurality of grooves along the axial direction, and the grooves make the screws firmly and reliably installed in the first screw hole and the second screw hole.

[0018] A preparation system for a craniomaxillofacial bone plate based on PEEK material, the preparation system comprising:

[0019] The modeling component includes an image acquisition system and a three-dimensional modeling system. The image acquisition system is used to acquire images of the patient's craniomaxillofacial fracture site, and the three-dimensional modeling system is used to perform three-dimensional modeling on the acquired images, so as to obtain an accurate three-dimensional image of the patient's craniomaxillofacial fracture site, thereby facilitating the customization of the bone plate according to the fracture condition.

[0020] The bone plate forming component includes a bone plate simulation forming system and a bone plate simulation installation system. The bone plate simulation forming system obtains the implantation site of the bone plate based on the three-dimensional image of the patient's fracture site, and simultaneously obtains the specific three-dimensional image of the bone plate, so as to facilitate the assembly of the required bone plate. According to the three-dimensional image of the bone plate, the simulation installation is performed on the three-dimensional image of the patient's fracture site, so as to obtain the best opening position on the patient's craniomaxilla, so as to reduce the number of openings and make the stability of the craniomaxilla better after installation.

[0021] Preparation components, including 3D printing equipment. According to the three-dimensional image of the bone plate, the bone plate required for the patient's fracture site is prepared by the 3D printing equipment, making the bone plate production efficient.

[0022] In one or more embodiments of the present invention, the 3D printing device adopts a cladding integrated 3D printing device, and the printing powder used by the printing device is PEEK material.

[0023] Compared with the prior art, when the first connecting plate provided by the present invention is connected to the second connecting plate, when the second connecting plate is sleeved on the connecting column through the sleeve hole, the clamping assembly on the connecting column can be clamped in the clamping groove on the sleeve hole, thereby making the connection between the second connecting plate and the connecting column stable, thereby making the connection between the first connecting plate and the second connecting plate convenient to operate and having better stability after connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of a craniomaxillofacial bone plate based on PEEK material in one embodiment of the present invention;

[0026] Figure 2 A three-dimensional diagram of a craniomaxillofacial bone plate based on PEEK material in one embodiment of the present invention;

[0027] Figure 3 An exploded view of a craniomaxillofacial bone plate based on PEEK material in one embodiment of the present invention;

[0028] Figure 4 is a schematic diagram of a first bone plate in the present invention;

[0029] Figure 5 is a schematic diagram of a second bone plate in the present invention;

[0030] Figure 6 It is a cross-sectional view of the connection between the clamping rod and the clamping groove in the present invention;

[0031] Figure 7 For the present invention Figure 6 Schematic diagram at A in the middle.

[0032] Description of main reference numerals:

[0033] 1-first bone plate, 11-first bone plate body, 12-first connecting plate, 13-connecting column, 14-limiting groove, 15-installing groove, 16-clamping rod, 17-compression spring, 18-first limiting ring, 19-second limiting ring, 110-wedge-shaped portion, 111-first screw hole, 112-first contact portion, 2-second bone plate, 21-second bone plate body, 22-second connecting plate, 23-sleeve hole, 24-clamping groove, 25-rounded corner portion, 26-limiting protrusion, 27-second contact portion, 28-second screw hole, 29-groove body. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0035] like Figure 1 to Figure 3 As shown, a craniomaxillofacial plate based on PEEK material in one embodiment of the present invention comprises a first bone plate 1 and a second bone plate 2 .

[0036] like Figure 1 to Figure 3 As shown, the second bone plates 2 are provided in plurality, and the plurality of second bone plates 2 and the first bone plate 1 are assembled into a required craniomaxillofacial bone plate. When the patient has a severe fracture in the craniomaxillofacial bones and needs to fix the fracture by means of a plurality of bone plates, the plurality of second bone plates 2 are connected to the first bone plate 1, so that the first bone plate 1 and the second bone plate 2 are assembled into the required craniomaxillofacial bone plate to fix the fracture site of the patient.

[0037] like Figure 1 to Figure 4 As shown, the first bone plate 1 includes a first bone plate body 11, and a pair of first connecting plates 12 are integrally formed at both ends of the first bone plate body 11. The first bone plate 1 and the second bone plate 2 can be connected together by the first connecting plates 12 arranged at both ends of the first bone plate body 11. The upper and lower ends of the pair of first connecting plates 12 are both rotatably mounted with connecting columns 13, so that the connecting columns 13 can rotate relative to the first connecting plates 12. When the connecting columns 13 are mounted on the first connecting plates 12, the stability and strength of the connecting columns 13 after installation need to be ensured while ensuring the rotation of the connecting columns 13. A plurality of snap-in assemblies are mounted on the side walls of the connecting columns 13, and the connection between the first bone plate 1 and the second bone plate 2 is fixed by the plurality of snap-in assemblies on the side walls of the connecting columns 13.

[0038] like Figure 1 to Figure 3 and Figure 5 As shown, the second bone plate 2 includes a second bone plate body 21, and a second connecting plate 22 is integrally formed at one end of the second bone plate body 21. The first bone plate 1 and the second bone plate 2 can be connected together by the cooperation of the second connecting plate 22 and the first connecting plate 12 arranged at one end of the second bone plate body 21. A sleeve hole 23 is provided in the center of the second connecting plate 22 in a penetrating manner. The second connecting plate 22 is sleeved on the corresponding connecting column 13 through the sleeve hole 23. By sleeve-fitting the second connecting plate 22 on the connecting column 13, the second connecting plate 22 and the first connecting plate 12 can be connected together, so as to facilitate the connection of the first bone plate 1 and the second bone plate 2 together. A plurality of snap-in grooves 24 matching the plurality of snap-in components are provided on the inner side wall of the sleeve hole 23, so that the second connecting plate 22 and the connecting column 13 can be fixed together by cooperating with the plurality of snap-in components on the connecting column 13 and the plurality of snap-in grooves 24 on the inner side wall of the sleeve hole 23, thereby making the connection between the second connecting plate 22 and the connecting column 13 stable.

[0039] Preferably, when the fracture site of the patient's craniomaxillofacial bone needs to be assembled into the required plate by the first plate 1 and multiple second plates 2, the second connecting plate 22 at one end of the second plate body 21 is sleeved into the connecting column 13 on the first connecting plate 12 at one end of the first plate body 11 through the sleeve hole 23, and when the second connecting plate 22 is sleeved on the connecting column 13, the connection between the second connecting plate 22 and the connecting column 13 is stabilized through the cooperation of the snap-fit ​​assembly on the side wall of the connecting column 13 and the snap-fit ​​groove 24 on the side wall of the sleeve hole 23, so as to make the connection between the first plate 1 and the second plate 2 stable. At the same time, due to the rotatability of the connecting column 13, the second connecting plate 22 can rotate with the connecting column 13 when installed on it, so that the second bone plate 2 can be adjusted at any angle according to needs when installed on the first bone plate 1, so that the first bone plate 1 and the second bone plate 2 are convenient to assemble and have good stability after assembly. At the same time, the adjustable angle of the second bone plate 2 improves the practicality of the assembled bone plate. And because the upper and lower ends of the first connecting plate 12 are both provided with connecting columns 13, the second bone plate 2 can be installed at the upper and lower ends of the first connecting plate 12, so that a pair of second bone plates 2 are provided at both ends of the first bone plate 1, thereby improving the fixation performance of the assembled bone plate on the fracture site.

[0040] like Figure 1 to Figure 3As shown, the thickness of the first bone plate body 11 is the same as the thickness of the second bone plate body 21, so that the bone plate assembled by the first bone plate 1 and the second bone plate 2 has better stability when fixing the fracture site. The thickness of the first connecting plate 12 is set to 1 / 3 of the thickness of the first bone plate body 11, and the upper and lower surfaces of the first connecting plate 12 are at the same distance from the upper and lower surfaces of the first bone plate body 11, so that the upper and lower ends of the first connecting plate 12 are used to install the second bone plate 2. The surface of the connecting column 13 away from the first connecting plate 12 is flush with the surface of the first bone plate body 11, so that the setting of the connecting column 13 will not affect the thickness of the assembled bone plate.

[0041] like Figure 1 to Figure 3 As shown, the thickness of the second connecting plate 22 is set to 1 / 3 of the thickness of the second plate body 21, and the surface of one side of the second connecting plate 22 is flush with the surface of one side of the second plate body 21, so that when the second connecting plate 22 is sleeved on the connecting column 13 through the sleeve hole 23, the surfaces of the first plate body 11 and the first connecting plate 12 are on the same horizontal line, thereby improving the practicability of the assembled plate. A first contact portion 112 is provided at the connection between the first bone fracture plate body 11 and the first connecting plate 12, and the first contact portion 112 matches the second connecting plate 22. A second contact portion 27 is provided at the connection between the second bone fracture plate body 21 and the second connecting plate 22, and the second contact portion 27 matches the first connecting plate 12. The first contact portion 112 and the second contact portion 27 make the connection completely fit after the first bone fracture plate 1 and the second bone fracture plate 2 are assembled. The complete fit after the first bone fracture plate 1 and the second bone fracture plate 2 are assembled makes the connection tightly sealed, effectively preventing body fluids and the like from entering the connection, thereby preventing residual impurities in the connection from contaminating the connection.

[0042] like Figure 6 Combination Figure 7 As shown, the clamping assembly includes a mounting groove 15, which is provided on the side wall of the connecting column 13, and a clamping rod 16 is slidably connected in the mounting groove 15, so that the clamping rod 16 can move in the mounting groove 15. A compression spring 17 is sleeved on the side wall of one end of the clamping rod 16 placed in the mounting groove 15, and the compression spring 17 provides a pushing force to the outside of the clamping rod 16, so that one end of the clamping rod 16 can be pushed to the outside of the mounting groove 15. One end of the clamping rod 16 placed outside the mounting groove 15 is placed in the clamping groove 24, so that one end of the clamping rod 16 is placed in the clamping groove 24, and the other end of the clamping rod 16 is placed in the mounting groove 15, so that the second connecting plate 22 is stable when sleeved on the connecting column 13 under the action of the clamping rod 16 in the second connecting plate 22 and the connecting column 13. At the same time, since a plurality of clamping assemblies are provided, a plurality of clamping rods 16 are provided to limit the relative movement between the second connecting plate 22 and the connecting column 13 , thereby ensuring the stability of the second connecting plate 22 being sleeved on the connecting column 13 .

[0043] like Figure 6 Combination Figure 7 As shown, the first limiting ring 18 is integrally formed on the side wall of the clamping rod 16 placed in the installation groove 15. The outer diameter of the first limiting ring 18 matches the inner diameter of the installation groove 15, so that when the clamping rod 16 moves in the installation groove 15, it can drive the first limiting ring 18 to slide in the installation groove 15. At the same time, due to the cooperation between the outer wall of the first limiting ring 18 and the inner wall of the installation groove 15, the sliding of the clamping rod 16 in the installation groove 15 is stable. A second limiting ring 19 is fixedly connected to the inner wall of the installation groove 15 at one end of the outer side of the connecting column 13. The inner diameter of the second limiting ring 19 matches the outer diameter of the clamping rod 16. When the clamping rod 16 slides in the installation groove 15 through the inner ring of the second limiting ring 19, the cooperation between the first limiting ring 18 and the second limiting ring 19 can limit the moving distance of the clamping rod 16 in the installation groove 15, thereby preventing the clamping rod 16 from falling out of the installation groove 15. At the same time, one end of the compression spring 17 abuts against the side wall of the installation groove 15 away from the opening, and the other end of the compression spring 17 abuts against the side wall of the first limiting ring 18. Therefore, when the clamping rod 16 drives the first limiting ring 18 to retract into the installation groove 15, the compression spring 17 can be compressed.

[0044] like Figure 6 Combination Figure 7 As shown, a wedge-shaped portion 110 is provided at one end of the clamping rod 16 placed in the clamping groove 24, and a rounded portion 25 is provided at the edge of the second connecting plate 22 abutting against the sleeve hole 23 on one side of the side wall of the first connecting plate 12, and the rounded portion 25 matches the wedge-shaped portion 110. When the second connecting plate 22 is sleeved on the connecting column 13, as the second connecting plate 22 moves downward on the connecting column 13, the contact between the rounded portion 25 and the wedge-shaped portion 110 allows the second connecting plate 22 to squeeze the clamping rod 16 back into the installation groove 15 through the wedge-shaped portion 110. When the clamping rod 16 is completely retracted into the installation groove 15, the second connecting plate 22 can slide into place on the connecting column 13. At the same time, when the second connecting plate 22 slides into place on the connecting column 13, the installation groove The position of 15 will correspond to the position of the snap-in groove 24, so that under the push of the compression spring 17, the snap-in rod 16 can be pushed out of the installation groove 15 and extended into the snap-in groove 24, so that the snap-in rod 16 is located in the second connecting plate 22 and the connecting column 13, so that the connecting column 13 fixes the connecting column 13 and the second connecting plate 22 together, so as to connect the first bone plate 1 and the second bone plate 2 together, so that the first bone plate 1 and the second bone plate 2 can be quickly organized together.

[0045] like Figure 2 , Figure 4 and Figure 5As shown, a pair of limiting grooves 14 are opened on the outer wall of the connecting column 13, and a pair of limiting protrusions 26 are integrally formed on the side wall of the sleeve hole 23. The pair of limiting protrusions 26 are respectively slidably connected to the pair of limiting grooves 14. In order to make the position of the mounting groove 15 correspond to the position of the clamping groove 24 when the second connecting plate 22 is sleeved on the connecting column 13, so as to ensure that the clamping rod 16 can extend into the clamping groove 24, the position of the second connecting plate 22 sleeved on the connecting column 13 can be guided by the cooperation between the limiting groove 14 and the limiting protrusion 26, so as to prevent the second connecting plate 22 and the connecting column 13 from rotating relative to each other, so as to ensure the correspondence between the positions of the mounting groove 15 and the clamping groove 24.

[0046] like Figure 1 to Figure 3 As shown, a first screw hole 111 is provided at the center of the first bone plate body 11, and the screw can fix the first bone plate 1 to the craniomaxillofacial bone through the first screw hole 111. A second screw hole 28 is provided at one end of the second bone plate body 21 away from the second connecting plate 22, and the screw can fix the second bone plate 2 to the craniomaxillofacial bone through the second screw hole 28. The first screw hole 111 and the second screw hole 28 are provided with a plurality of grooves 29 along the axial direction, and the grooves 29 make the screws firmly and reliably installed in the first screw hole 111 and the second screw hole 28.

[0047] When in use, when the patient's craniomaxillary fracture site needs to be fixed by an assembled bone plate, a pair of second bone plates 2 need to be installed at both ends of the first bone plate 1; specifically, the second connecting plate 22 is sleeved on the connecting column 13 through the sleeve hole 23, and the limiting protrusion 26 needs to be slidably connected to the limiting groove 14 during the sleeve connection. When the second connecting plate 22 moves on the connecting column 13, the rounded corner portion 25 and the wedge-shaped portion 110 can be used to make the second connecting plate 22 squeeze the clamping rod 16 back into the installation groove 15. At the same time, when the clamping rod 16 is retracted into the installation groove 15, the compression spring 17 will be compressed, so that the compression spring 17 has an outward thrust on the clamping rod 16. When the second connecting plate 22 is installed in place on the connecting column 13, the installation groove 15 will be in the position of the clamping groove 24. The positions correspond to each other, so that under the push of the compression spring 17, the clamping rod 16 extends into the clamping groove 24, so that the action of the clamping rod 16 in the connecting column 13 and the second connecting plate 22 ensures the stability of the first bone plate 1 and the second bone plate 2 after connection; the assembly of the first bone plate 1 and the second bone plate 2 is completed in sequence, so that the connection between the first bone plate 1 and the second bone plate 2 is fast and stable; when the assembled bone plate is installed, the first bone plate 1 is first fixed to the corresponding position by screws, and the second bone plate 2 is rotated according to the position of the opening on the patient's craniomaxilla, so that when the second screw hole 28 corresponds to the position of the opening, the second bone plate 2 can be fixed by screws, and the assembled bone plate can be fixed to the position of the patient's fracture, thereby achieving fixation of the fracture site.

[0048] A preparation system for a craniomaxillofacial bone plate based on PEEK material, the preparation system comprising a modeling component, a bone plate forming component and a preparation component.

[0049] The modeling component includes an image acquisition system and a three-dimensional modeling system. The image acquisition system is used to acquire images of the patient's craniomaxillofacial fracture site, and the three-dimensional modeling system is used to perform three-dimensional modeling on the acquired images, so as to obtain an accurate three-dimensional image of the patient's craniomaxillofacial fracture site, thereby facilitating the customization of the bone plate according to the fracture situation.

[0050] The bone plate forming assembly includes a bone plate simulation forming system and a bone plate simulation installation system. The bone plate simulation forming system obtains the implantation site of the bone plate based on the three-dimensional image of the patient's fracture site, and obtains the specific three-dimensional image of the bone plate at the same time, so as to facilitate the assembly of the required bone plate. According to the three-dimensional image of the bone plate, the simulation installation is performed on the three-dimensional image of the patient's fracture site, so as to obtain the best opening position on the patient's craniomaxilla, so as to reduce the number of openings and make the stability of the craniomaxilla better after installation.

[0051] The preparation component includes a 3D printing device. According to the three-dimensional image of the bone plate, the bone plate required for the fracture site of the patient is prepared by the 3D printing device, so that the production of the bone plate is efficient.

[0052] Preferably, the 3D printing device adopts a cladding integrated 3D printing device, and the printing powder used by the printing device is a PEEK material.

[0053] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0054] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A craniomaxillofacial bone plate based on PEEK material, comprising a first bone plate and a second bone plate, characterized in that: The second bone fracture plate is provided in plurality, and the plurality of the second bone fracture plates and the first bone fracture plate are assembled into the required craniomaxillofacial bone fracture plate, specifically: The first bone fracture plate comprises a first bone fracture plate body, a pair of first connecting plates are integrally formed at both ends of the first bone fracture plate body, connecting columns are rotatably mounted at both upper and lower ends of the pair of first connecting plates, and a plurality of clamping components are mounted on the side walls of the connecting columns; The second bone plate includes a second bone plate body, a second connecting plate is integrally formed at one end of the second bone plate body, a sleeve hole is opened in the center of the second connecting plate in a penetrating manner, the second connecting plate is sleeved on the corresponding connecting column through the sleeve hole, and a plurality of clamping grooves matching the plurality of clamping components are opened on the inner side wall of the sleeve hole.

2. The craniomaxillofacial bone plate based on PEEK material according to claim 1, characterized in that: The thickness of the first plate body is the same as that of the second plate body, the thickness of the first connecting plate is set to 1 / 3 of the thickness of the first plate body, the upper and lower surfaces of the first connecting plate are at the same distance from the upper and lower surfaces of the first plate body, and the surface of the connecting column away from the first connecting plate is flush with the surface of the first plate body.

3. The craniomaxillofacial bone plate based on PEEK material according to claim 2, characterized in that: The thickness of the second connecting plate is set to 1 / 3 of the thickness of the second plate body, the surface of one side of the second connecting plate is flush with the surface of one side of the second plate body, a first contact portion is provided at the connection between the first plate body and the first connecting plate, and the first contact portion matches the second connecting plate, and a second contact portion is provided at the connection between the second plate body and the second connecting plate, and the second contact portion matches the first connecting plate.

4. The craniomaxillofacial bone plate based on PEEK material according to claim 1, characterized in that: The clamping assembly includes an installation groove, which is opened on the side wall of the connecting column. A clamping rod is slidably connected in the installation groove. A compression spring is sleeved on the side wall of one end of the clamping rod placed in the installation groove, and one end of the clamping rod placed outside the installation groove is placed in the clamping groove.

5. The craniomaxillofacial bone plate based on PEEK material according to claim 4, characterized in that: A first limiting ring is integrally formed on the side wall of the clamping rod placed in the installation groove, and the outer diameter of the first limiting ring matches the inner diameter of the installation groove. A second limiting ring is fixedly connected to the inner side wall of the installation groove at one end of the outer side of the connecting column, and the inner diameter of the second limiting ring matches the outer diameter of the clamping rod.

6. The craniomaxillofacial bone plate based on PEEK material according to claim 5, characterized in that: A wedge-shaped portion is provided at one end of the clamping rod placed in the clamping groove, and a rounded portion is provided at the edge of the sleeve hole on one side of the side wall of the first connecting plate against the second connecting plate, and the rounded portion matches the wedge-shaped portion.

7. The craniomaxillofacial bone plate based on PEEK material according to claim 1, characterized in that: A pair of limiting grooves are formed on the outer side wall of the connecting column, and a pair of limiting protrusions are integrally formed on the side wall of the sleeve hole. The pair of limiting protrusions are respectively slidably connected in the pair of limiting grooves.

8. The craniomaxillofacial bone plate based on PEEK material according to claim 1, characterized in that: A first screw hole is formed at the center of the first bone plate body, a second screw hole is formed at one end of the second bone plate body away from the second connecting plate, and a plurality of slots are formed in the first screw hole and the second screw hole along the axial direction.

9. The system for preparing a craniomaxillofacial bone plate based on PEEK material according to any one of claims 1 to 8, characterized in that: The preparation system comprises: Modeling components, including image acquisition system and 3D modeling system; A bone plate forming component, including a bone plate simulation forming system and a bone plate simulation installation system; Preparation of components, including 3D printing equipment.

10. The system for preparing craniomaxillofacial bone plate based on PEEK material according to claim 9, characterized in that: The 3D printing device adopts a cladding integrated 3D printing device, and the printing powder used by the printing device is a PEEK material.

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