Carbon fiber bone fracture plate device

Abstract

The utility model discloses a carbon fiber bone fracture plate device which comprises a bone fracture plate body made of thermoplastic resin / carbon fiber composite materials, the bone fracture plate body is composed of at least two plates, at least one pair of adjacent plates form a binding face structure, two bone cement containing cavities are respectively arranged at the same time, and when the bone fracture plate device is used or needs to be molded, the binding face structure is provided with the two bone cement containing cavities. According to the specific angle of the bone, the two adjacent plates rotate along the attaching face to conduct angle adjustment, after adjustment is completed, the clamping device is used for clamping, the first face and the second face are kept to be attached, the two bone cement containing cavities are at least partially in butt joint, namely, the two bone cement containing cavities are communicated, at the moment, bone cement is injected into the two bone cement containing cavities through the injection channel, and the bone cement is injected into the bone cement containing cavities. And after the bone cement is solidified, the bone fracture plate main body becomes a whole, molding is completed, and the problem that an existing bone fracture plate formed by the thermoplastic resin / carbon fiber composite material cannot be molded during use is solved.

Description

Technical Field

[0001] This utility model relates to the field of carbon fiber bone plate technology, specifically to a carbon fiber bone plate device that can be shaped before or during surgery. Background Technology

[0002] With the research and development of new materials, thermoplastic resin / carbon fiber composites, especially PEEK / carbon fiber composites, are increasingly being used in bone plate devices due to their excellent material stability, elastic modulus closer to that of human cortical bone, flexural strength similar to titanium alloys, excellent X-ray penetrability, and excellent fatigue strength. Although bone plates made of thermoplastic resin / carbon fiber composites have the above advantages, they suffer from a serious drawback during shaping: resin tearing, carbon fiber breakage, and chipping. This makes them impossible to shape preoperatively or intraoperatively.

[0003] In the prior art, Chinese patent document CN216317919U discloses a highly applicable proximal humeral locking bone plate, which includes a main plate, an arc-shaped connecting plate on one side of the main plate, and a fixing plate at the end of the arc-shaped connecting plate opposite to the main plate. The main plate and the arc-shaped connecting plate, and the arc-shaped connecting plate and the fixing plate are connected by screws. Similarly, Chinese patent document CN220025170U discloses a highly secure metal locking bone plate, which also discloses the above content. Both of these documents disclose a structure in which several bone plates are connected by screws to facilitate angle adjustment. The above technology uses screws to connect the bone plates to adjust their angle and thus shape them. Essentially, the bone plates are made of metal, and when metal screws are used, adjacent bone plates can be fixedly connected without deformation, and no chipping or falling off of the bone plate surface due to screw tightening is caused. However, when the above-mentioned screw connection structure is applied to bone plates made of thermoplastic resin / carbon fiber composite material for molding, it is easy to cause the screw threads to break and crumble, and the contact surface between the nut and / or screw and the bone plate will cause the thermoplastic resin on the surface of the bone plate to crack and crumble when the screw is tightened.

[0004] Therefore, how to make bone plates made of thermoplastic resin / carbon fiber composite materials malleable has become an urgent problem for technicians to solve. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a carbon fiber bone plate device, which includes a bone plate body made of thermoplastic resin / carbon fiber composite material. The bone plate body includes at least a first plate and a second plate. At least a pair of adjacent plates form a first surface and a second surface that are arranged opposite to each other and at least partially attached during use. The first surface and the second surface are respectively formed on the two plates. At the same time, a first bone cement receiving cavity and a second bone cement receiving cavity are respectively formed on the two plates. When the first surface and the second surface are attached, the port of the first bone cement receiving cavity located on the first surface and the port of the second bone cement receiving cavity located on the second surface are at least partially connected. The bone plate body also has an injection channel for injecting bone cement into the first bone cement receiving cavity and the second bone cement receiving cavity.

[0006] In the above solution, the main body of the bone plate consists of at least two plates, and at least one pair of adjacent plates form a mating surface structure. Two bone cement receiving cavities are also provided. When in use, or when shaping is required, the two adjacent plates are rotated along the mating surface to adjust the angle according to the specific angle of the bone. After adjustment, a clamping device (such as medical clamps) is used to clamp the plates, keeping the first and second surfaces in contact, and the two bone cement receiving cavities at least partially connected. Bone cement is then injected into the two bone cement receiving cavities through an injection channel. After the bone cement solidifies, the main body of the bone plate becomes a single unit, completing the shaping process. This solves the problem that existing bone plates formed from thermoplastic resin / carbon fiber composite materials cannot be shaped during use, and also addresses the issue of flaking during the shaping process.

[0007] Preferably, each pair of adjacent plates forms a first and a second surface that are oppositely arranged and at least partially in contact during use. This arrangement allows the bone plate formed from the thermoplastic resin / carbon fiber composite material to be adjusted at multiple angles.

[0008] Preferably, each pair of adjacent plates forms an L-shaped complementary structure. This structure allows for angle adjustment and shaping of the bone plate without increasing its width.

[0009] Preferably, the first and second bone cement receiving cavities are hexagonal prisms. By setting the hexagonal prism structure, rotation will not occur after the angle of the two adjacent plates is adjusted, thus ensuring the stability of the two adjacent plates.

[0010] Preferably, the edges of the hexagonal prism are chamfered. This chamfering facilitates processing.

[0011] Preferably, the portion or port of the first bone cement receiving cavity away from the first surface is expanded outward to form a first expansion cavity; the portion or port of the second bone cement receiving cavity away from the second surface is expanded outward to form a second expansion cavity. The provision of the first and second expansion cavities ensures that adjacent plates will not detach in the width direction, further guaranteeing the stability of the adjacent plates.

[0012] Preferably, at least one plate of the bone plate body has an embedded metal sleeve, and the metal sleeve has an internal thread that mates with the fixing bolt. The internal thread is adapted to the thread of the fixing screw to avoid friction between the screw and the internal thread on the bone plate, or to prevent the thread on the bone plate from being broken and falling off as debris.

[0013] Preferably, the upturned ends of each plate in the main body of the bone plate are treated with arc surfaces after the angle is adjusted. This design reduces or avoids sharp-angle contact between the bone plate and human tissue, thereby reducing patient pain or improving the healing effect.

[0014] Preferably, the thermoplastic resin is at least one selected from PEEK, PEKK, PEK, and PEEKKK. More preferably, the thermoplastic resin is PEEK.

[0015] In another technical solution, a pre-molding bolt is also included; a first threaded channel and a second threaded channel are formed within the bone plate body, the first threaded channel communicating with the first bone cement receiving cavity, and the second threaded channel communicating with the second bone cement receiving cavity; the pre-molding bolt is screwed into the first threaded channel, passes through the first bone cement receiving cavity and the second bone cement receiving cavity, and then screwed into the second threaded channel to pre-mold the bone plate body; or, the pre-molding bolt is screwed into the second threaded channel, passes through the second bone cement receiving cavity and the first bone cement receiving cavity, and then screwed into the first threaded channel to pre-mold the bone plate body. By setting pre-shaped bolts and corresponding first and second threaded channels, during angle adjustment or shaping, the two adjacent plates are rotated along the mating surface to adjust the angle according to the specific angle of the bone. After adjustment, the pre-shaped bolts are slightly tightened to maintain the pre-fixation of the two adjacent plates without causing the threads to break, ensuring the first and second surfaces are in contact, and the two bone cement cavities are at least partially connected. At this point, bone cement is injected into the two bone cement cavities through the injection channels. After the bone cement solidifies, the bone plate body becomes a single unit, completing the shaping process. At this time, the bone cement forms a bone cement structure around the pre-shaped bolts, increasing the contact structure and area between the bone cement and the bone plate body, further improving the fixation strength of the bone cement, and ensuring the stability of the bone plate after shaping.

[0016] Furthermore, a first expansion cavity is formed between the first threaded channel and the first bone cement receiving cavity; a second expansion cavity is formed between the second threaded channel and the second bone cement receiving cavity. The pre-molding bolt is screwed into the first threaded channel, passes through the first expansion cavity, the first bone cement receiving cavity, the second bone cement receiving cavity, and the second expansion cavity, and then is screwed into the second threaded channel to pre-mold the bone plate body; or, the pre-molding bolt is screwed into the second threaded channel, passes through the second expansion cavity, the second bone cement receiving cavity, the first bone cement receiving cavity, and the first expansion cavity, and then is screwed into the first threaded channel to pre-mold the bone plate body. The provision of the first and second expansion cavities further ensures that adjacent plates will not detach in the width direction, thus further guaranteeing the stability of the adjacent plates.

[0017] Preferably, the end of the first threaded channel away from the first bone cement receiving cavity forms a first embedded groove, and the end of the second threaded channel away from the second bone cement receiving cavity forms a second embedded groove. By setting the embedded grooves, the nut of the pre-molded bolt and the matching nut are embedded in the bone plate. During pre-fixation or after fixation, the nut and nut will block the communicating channel. Even if the thread has some breakage, the broken part will be blocked, avoiding interference or damage to bone and muscle healing. At the same time, it will also reduce the protrusion outside the shape of the bone plate and reduce stimulation to muscle tissue.

[0018] Preferably, the injection channel is formed inside the pre-molded bolt. By placing the injection channel inside the pre-molded bolt, there is no need to drill additional holes or design channels on the bone plate body, further reducing damage to the bone plate and ensuring its strength. Simultaneously, the shape of the cured bone cement after injection includes the shape of the injection channel, increasing the connection strength and ensuring that the bone plate does not deform during molding. More preferably, the injection channel has at least one outlet at each of the first and second bone cement receiving cavities, increasing the injection speed of the bone cement.

[0019] This invention solves the problem of screw thread breakage in existing carbon fiber bone plates by combining pre-molded bolts with bone cement, while also ensuring the strength of the carbon fiber bone plate after molding. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the specific embodiments of this utility model, the drawings used in the specific embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a structural schematic diagram of the carbon fiber bone plate device (without metal sleeve) of this utility model;

[0022] Figure 2 yes Figure 1 Top view;

[0023] Figure 3 yes Figure 2 AA direction view;

[0024] Figure 4 This is a structural schematic diagram of the carbon fiber bone plate device (including metal sleeve) of this utility model;

[0025] Figure 5 This is a structural schematic diagram of the carbon fiber bone plate device (including pre-molded bolts and bone cement curing blocks) of this utility model;

[0026] Figure 6 yes Figure 5 Sectional view after removing pre-molded bolts, cement hardening blocks, and metal sleeves (sectioning direction same as above). Figure 2 );

[0027] Figure 7 This is a structural schematic diagram of a pre-plasticized bolt;

[0028] Figure 8 yes Figure 6 Schematic diagram of the structure of medium-strength cement hardening block;

[0029] Figure 9 This is a structural schematic diagram of the carbon fiber bone plate device containing three plates according to this utility model;

[0030] Figure 10 This is a schematic diagram of a carbon fiber bone plate device according to the present invention.

[0031] Figure 11 This is a schematic diagram of the carbon fiber bone plate (two plates) after shaping according to this utility model.

[0032] The reference numerals in the figure are as follows: 1-First plate; 2-Second plate; 3-First surface; 4-Second surface; 5-First bone cement receiving cavity; 6-Second bone cement receiving cavity; 7-First expansion cavity; 8-Second expansion cavity; 9-Metal sleeve; 10-Pre-molded bolt; 11-First threaded channel; 12-Second threaded channel; 13-First inner groove; 14-Second inner groove; 15-Injection channel; 16-Bone cement solidification block; 17-Third plate. Detailed Implementation

[0033] The present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Other embodiments derived by those skilled in the art from the embodiments of the present invention without inventive effort are all within the scope of protection of the present invention.

[0034] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0037] Example 1

[0038] This embodiment discloses a carbon fiber bone plate device, which includes a bone plate body made of thermoplastic resin / carbon fiber composite material, comprising at least two plates. At least one pair of adjacent plates form a first surface and a second surface that are arranged opposite each other and at least partially attached during use. The first surface and the second surface are respectively formed on the adjacent plates. At the same time, a first bone cement receiving groove and a second bone cement receiving groove are respectively formed on the two plates. When the first surface and the second surface are attached, the port of the first bone cement receiving cavity located on the first surface and the port of the second bone cement receiving cavity located on the second surface are at least partially connected to ensure that the two are connected. Meanwhile, the bone plate body also has an injection channel for injecting bone cement into the first bone cement receiving cavity and / or the second bone cement receiving cavity. The position of the injection channel (not shown in the figure) is not specifically limited, as long as bone cement can be injected into the bone cement receiving cavity. For example, a channel can be provided from the bone cement receiving cavity to the surface of the bone plate body. When the bone plate body is larger than two plates, preferably, each pair of adjacent plates forms a first and second surface that are oppositely arranged and at least partially in contact during use. Simultaneously, the aforementioned bone cement receiving cavity and injection channel are formed, and the usage method is the same as above. This invention forms two in contact between adjacent plates. During use, the angles of the adjacent two plates are adjusted according to the bone angle, rotating them to align the first and second bone cement receiving grooves as much as possible. Then, the two are clamped together, and bone cement is injected. After the bone cement solidifies within the bone cement receiving cavity, the next step can be performed. By dividing the bone plate body into multiple plates and forming bone cement receiving cavities between adjacent plates, the adhesive force and cured strength of the bone cement act as a connecting bridge between adjacent plates after the bone cement has solidified, enabling angle adjustment of the bone plate body made of thermoplastic resin / carbon fiber composite material before or during surgery. The specific structure and length of each plate can be designed according to the specific bone.

[0039] Specifically, such as Figures 1-3As shown, the main body of the bone plate includes a first plate 1 and a second plate 2. These two plates form a first surface 3 and a second surface 4 that are oppositely arranged and at least partially in contact during use. The first surface 3 is formed on the first plate 1, and the second surface is formed on the second plate 2. The positions of the first surface 3 and the second surface 4 can be designed according to the specific bone plate. In this embodiment, the two plates form an L-shaped complementary structure, and when the first surface 3 and the second surface 4 are in contact, they form an interlocking structure. A first bone cement receiving cavity 5 is also formed in the first plate 1, and a second bone cement receiving cavity 6 is also formed in the second plate 2. The design of the first bone cement receiving cavity 5 and the second bone cement receiving cavity 6 is versatile and can be either blind holes or through holes. Blind holes are preferred, with their opening ends located on the first surface 3 and the second surface 4, respectively. As for the specific structure, there are no specific limitations, but a structure with edges is preferred. In this embodiment, it is a hexagonal prism structure. More preferably, the edges of the hexagonal prism are chamfered for easy processing. Furthermore, the ends of the first plate 1 and the second plate 2 that are raised after adjusting the angle are treated with arc surfaces, such as at part B.

[0040] In one implementation, such as Figure 4 As shown, a metal sleeve 9 is embedded in the bone plate body at the location where a threaded fixing hole needs to be formed. The metal sleeve 9 has an internal thread that mates with the fixing bolt. The structural design of the metal sleeve 9 varies; preferably, the two ends of the threaded hole formed by the metal sleeve 9 are located on the two end faces of the bone plate body to prevent the threads of the fixing bolt from contacting the bone plate body and avoiding chipping. Simultaneously, to ensure the stability of the connection between the metal sleeve and the bone plate body, the metal sleeve forms protrusions and / or recesses, and the receiving position of the metal sleeve forms a corresponding structure, such as... Figure 4 As shown, a raised ring is formed on the metal sleeve 9, and several raised rings are also formed above and below this raised ring, corresponding to the recessed structure that matches the receiving position of the metal sleeve. Of course, the bone plate body can also be formed with optical connection holes according to the actual situation, and the specific design is based on the bone at the specific location.

[0041] The thermoplastic resin is selected from materials suitable for use as bone plates, such as at least one of PEEK, PEKK, PEK, and PEEKK. Preferably, the thermoplastic resin is PEEK. In this case, the bone plate body is made of a composite material formed from PEEK and carbon fiber.

[0042] Example 2

[0043] This embodiment discloses a carbon fiber bone plate device, which is formed based on Embodiment 1, such as... Figures 5-8As shown, the carbon fiber bone plate device also includes a pre-molding bolt 10; simultaneously, a first threaded channel 11 and a second threaded channel 12 are formed within the bone plate body. Specifically, the first threaded channel 11 is formed within the first plate 1, and the second threaded channel 12 is formed within the second plate. The first threaded channel 11 communicates with the first bone cement receiving cavity 5, and the second threaded channel 12 communicates with the second bone cement receiving cavity 6. In use, the pre-molding bolt 10 is screwed into the first threaded channel 11, passes through the first bone cement receiving cavity 5 and the second bone cement receiving cavity 6, and then screwed into the second threaded channel 12 to pre-mold the bone plate body by tightening or slightly tightening; or, the pre-molding bolt 10 is screwed into the second threaded channel 12, passes through the second bone cement receiving cavity 6 and the first bone cement receiving cavity 5, and then screwed into the first threaded channel 11 to pre-mold the bone plate body.

[0044] Furthermore, a first expansion cavity 7 is formed between the first threaded channel 11 and the first bone cement receiving cavity 5; a second expansion cavity 8 is formed between the second threaded channel 12 and the second bone cement receiving cavity 6. The structures of the first expansion cavity 7 and the second expansion cavity 8 are varied. Preferably, the first expansion cavity 7 is formed by expanding one end of the first threaded channel 11 and / or the first bone cement receiving cavity 5, or it can be a partial expansion of that end. Similarly, the second expansion cavity 8 is formed by expanding one end of the second threaded channel 12 and / or the first bone cement receiving cavity 6, or it can be a partial expansion of that end. When in use, the pre-molded bolt 10 is screwed into the first threaded channel 11, passes through the first expansion cavity 7, the first bone cement receiving cavity 5, the second bone cement receiving cavity 6, and the second expansion cavity 8, and then screwed into the second threaded channel 12, tightened or slightly tightened to pre-mold the bone plate body; or, the pre-molded bolt 10 is screwed into the second threaded channel 12, passes through the second expansion cavity 8, the second bone cement receiving cavity 6, the first bone cement receiving cavity 5, and the first expansion cavity 7, and then screwed into the first threaded channel 11, slightly tightened to pre-mold the bone plate body.

[0045] Furthermore, a first recessed groove 13 is formed at the end of the first threaded channel 11 away from the first bone cement receiving cavity 5, and a second recessed groove 14 is formed at the end of the second threaded channel 12 away from the second bone cement receiving cavity 6. Both the first recessed groove 13 and the second recessed groove 14 are formed within the bone plate body, and the groove opening is formed on the plate surface of the bone plate body to place and hide the nut and matching nut of the pre-molded bolt 10. The position of the nut and the nut, as well as the screwing direction of the pre-molded bolt, are determined according to the structure of the first recessed groove 13 and the second recessed groove 14. In this embodiment, the first recessed groove 13 is a smooth hole to hide the nut, and the second recessed groove 14 is a hexagonal hole to hide the nut.

[0046] Furthermore, the injection channel 15 is formed inside the pre-molded bolt 10, thereby allowing bone cement to be injected from the nut port of the injection channel 15 and enter the first bone cement receiving groove 5 and the second bone cement receiving groove 6 from the screw outlet port to form the bone cement fixing block 16. Specifically, as... Figure 8 The embodiment shown illustrates the structure of a bone cement fixation block 16.

[0047] Example 3

[0048] like Figure 9 As shown, this embodiment discloses a carbon fiber bone plate device, which is formed based on Embodiment 1. The portion or port of the first bone cement receiving cavity 5 away from the first surface 3 is expanded outward to form a first expansion cavity 7; the portion or port of the second bone cement receiving cavity 6 away from the second surface 4 is expanded outward to form a second expansion cavity 8. Specifically, the port of the first bone cement receiving cavity 5 away from the first surface 3 is expanded outward to form the first expansion cavity 7; the port of the second bone cement receiving cavity 6 away from the second surface 4 is expanded outward to form the second expansion cavity 8. The structures of the first expansion cavity 7 and the second expansion cavity 8 are varied; they can be partially expanded outward or the entire port position can be expanded outward.

[0049] Example 4

[0050] like Figure 10 As shown, this embodiment discloses a carbon fiber bone plate device. The bone plate body includes three pieces: a first plate 1, a second plate 2, and a third plate 3. It includes two sets of angle adjustment structures, namely between the first plate 1 and the third plate 3 and between the second plate and the third plate. The specific angle adjustment structure can adopt the structure of Embodiment 1, Embodiment 2, or Embodiment 3. In this embodiment, the structure of Embodiment 2 is preferred.

[0051] The bone plate of this utility model is made of thermoplastic resin / carbon fiber composite material. The preparation method is not limited. This utility model includes the following steps: (1) pre-pressing the carbon fiber plate and then processing the shape and grooves (metal sleeve grooves and / or smooth grooves can be designed according to actual requirements); (2) processing the metal sleeve and / or smooth groove modules and pre-molded bolts (available for purchase); (3) placing the above modules into the carbon fiber plate body and then into the injection mold; (4) injecting thermoplastic resin (preferably PEEK), then cooling. After cooling, processing the required cavity and thread structure, as well as other structures, according to the design drawings. In use, adjust the angle, inject bone cement through the injection channel to connect and fix the two adjacent plates, and then proceed with subsequent operations. The setting time of the bone cement is 15-30 minutes. After molding, as... Figure 11 As shown, of course, the shaped structure is not limited to... Figure 11 The angle shown may vary depending on the specific skeletal structure.

[0052] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A carbon fiber bone plate device, characterized in that, It includes a bone plate body made of thermoplastic resin / carbon fiber composite material. The bone plate body includes at least a first plate and a second plate. At least a pair of adjacent plates form a first surface and a second surface that are disposed opposite to each other and at least partially attached during use. The first surface and the second surface are respectively formed on the two plates. At the same time, a first bone cement receiving cavity and a second bone cement receiving cavity are respectively formed on the two plates. When the first surface and the second surface are attached, the port of the first bone cement receiving cavity located on the first surface and the port of the second bone cement receiving cavity located on the second surface are at least partially connected. The bone plate body also has injection channels for injecting bone cement into the first bone cement receiving cavity and the second bone cement receiving cavity.

2. The carbon fiber bone plate device according to claim 1, characterized in that, Each pair of adjacent plates forms a first and second surface that are positioned opposite each other and are at least partially in contact with each other during use.

3. The carbon fiber bone plate device according to claim 2, characterized in that, Each pair of adjacent plates forms an L-shaped complementary structure.

4. The carbon fiber bone plate device according to claim 1, characterized in that, The first and second bone cement cavities are hexagonal prisms.

5. The carbon fiber bone plate device according to claim 4, characterized in that, The edges of the hexagonal prism are chamfered.

6. The carbon fiber bone plate device according to claim 1, characterized in that, At least one plate of the bone plate body has an embedded metal sleeve, and the metal sleeve has an internal thread that mates with the fixing bolt. The internal thread is adapted to the thread of the fixing screw.

7. The carbon fiber bone plate device according to claim 1, characterized in that, The ends of each plate in the bone plate body are curved after the angle is adjusted.

8. The carbon fiber bone plate device according to claim 1, characterized in that, The thermoplastic resin is at least one of PEEK, PEKK, PEK, and PEKEKK.

9. The carbon fiber bone plate device according to claim 1, characterized in that, The portion or port of the first bone cement receiving cavity away from the first surface is expanded outward to form a first extended cavity; the portion or port of the second bone cement receiving cavity away from the second surface is expanded outward to form a second extended cavity.

10. The carbon fiber bone plate device according to claim 1, characterized in that, It also includes pre-molding bolts; the bone plate body has a first threaded channel and a second threaded channel, the first threaded channel communicating with the first bone cement receiving cavity, and the second threaded channel communicating with the second bone cement receiving cavity; the pre-molding bolts are screwed into the first threaded channel, pass through the first bone cement receiving cavity and the second bone cement receiving cavity, and then screwed into the second threaded channel to pre-mold the bone plate body; or, the pre-molding bolts are screwed into the second threaded channel, pass through the second bone cement receiving cavity and the first bone cement receiving cavity, and then screwed into the first threaded channel to pre-mold the bone plate body.

11. The carbon fiber bone plate device according to claim 10, characterized in that, A first expansion cavity is formed between the first threaded channel and the first bone cement receiving cavity; a second expansion cavity is formed between the second threaded channel and the second bone cement receiving cavity; the pre-molding bolt is screwed into the first threaded channel, passes through the first expansion cavity, the first bone cement receiving cavity, the second bone cement receiving cavity, and the second expansion cavity, and then screwed into the second threaded channel to pre-mold the bone plate body; or, the pre-molding bolt is screwed into the second threaded channel, passes through the second expansion cavity, the second bone cement receiving cavity, the first bone cement receiving cavity, and the first expansion cavity, and then screwed into the first threaded channel to pre-mold the bone plate body.

12. The carbon fiber bone plate device according to claim 10 or 11, characterized in that, The end of the first threaded channel away from the first bone cement receiving cavity forms a first embedded groove, and the end of the second threaded channel away from the second bone cement receiving cavity forms a second embedded groove.

13. The carbon fiber bone plate device according to claim 10 or 11, characterized in that, The injection channel is formed inside the pre-molded bolt.

Images