A splicing type bone plate suitable for connection at various angles

Abstract

The utility model relates to the field of medical apparatus and instruments, especially point to a kind of splicing type bone plate suitable for multiple angle connection, the bone plate includes main plate and connecting mechanism.In use, according to the angle required by bone plate, the adjacent first ear seat and second ear seat on two main plates are overlapped together, so that the meshing tooth is embedded in meshing groove, at this time, the adjacent first connecting hole on two main plates is aligned with second connecting hole, lower connecting pipe and upper connecting pipe are respectively inserted into first connecting hole and second connecting hole, so that upper connecting pipe and lower connecting pipe are screwed, until first protrusion and second protrusion respectively resist first ear seat and second ear seat, thereby the two main plates spliced are fixedly connected and used.The utility model splices multiple main plates of same shape to form bone plate, so that bone plate can realize length adjustable, angle adjustable, can be flexibly adjusted according to individual differences of different patients, and has strong versatility.Specification size is unified, avoid multiple specifications spare, disinfect and select and find.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a spliced ​​bone plate suitable for connection at multiple angles. Background Technology

[0002] Plate and screw fixation is a common method for treating fractures. The bone plate and screw work together, with the screw connecting to the fractured bone fragment to achieve stable fixation. However, because each patient's fracture is different, and existing bone plates have fixed structures and various length specifications, it is often necessary to stock all available plates to meet surgical needs. This leads to a large workload for inventory and acceptance, high sterilization costs, slow selection during surgery, and poor versatility as standard bone plates cannot be flexibly adjusted to accommodate individual patient differences. Utility Model Content

[0003] To address the shortcomings mentioned above in the background technology, this utility model provides a spliced ​​bone plate suitable for connection at multiple angles.

[0004] The present invention adopts the following technical solution:

[0005] A spliced ​​bone plate suitable for multi-angle connections, the bone plate comprising:

[0006] The motherboard has a first lug and a second lug on its two end faces, respectively. The peripheral surfaces of the first lug and the second lug are arc-shaped. The upper surface of the first lug has a plurality of meshing teeth, at least twenty in number, arranged in a circumferential array. The lower surface of the second lug has a plurality of meshing grooves that mate with the meshing teeth, arranged in a circumferential array. The center of each meshing tooth has a first connecting hole that penetrates to the lower surface of the first lug. The center of each meshing groove has a second connecting hole that penetrates to the upper surface of the second lug. The diameter of the first connecting hole is equal to the diameter of the second connecting hole.

[0007] A connecting mechanism includes a lower connecting pipe and an upper connecting pipe. The outer diameter of the lower connecting pipe is equal to the diameter of the first connecting hole. The lower connecting pipe is detachably sleeved on the outside of the upper connecting pipe. The lower connecting pipe and the upper connecting pipe are connected by threads. The pipe wall at the bottom of the lower connecting pipe protrudes outward to form a first protrusion, and the pipe wall at the top of the upper connecting pipe protrudes outward to form a second protrusion. The cross-sectional areas of the first protrusion and the second protrusion are both larger than the area of ​​the first connecting hole.

[0008] The lower connecting pipe and the upper connecting pipe act within the first connecting hole and the second connecting hole to fix the two motherboards that are spliced ​​together.

[0009] As a further improvement, the motherboard has at least one fixing hole on its upper surface, and the fixing hole extends through the motherboard.

[0010] As a further improvement, the upper surface of the second ear seat is provided with a second groove, which is located around the circumference of the second connecting hole. The second groove is used to place the second protrusion and can accommodate the rotating second protrusion.

[0011] As a further improvement, the lower surface of the first ear seat is provided with a first groove, which is located around the circumference of the first connecting hole. The first groove is used to fix and place the first protrusion.

[0012] As a further improvement, when the first protrusion has a circular cross-section, the upper surface of the first protrusion is provided with a locking block, and the bottom of the first groove is provided with a locking groove that cooperates with the locking block. When the first protrusion is placed in the first groove, the locking block is embedded in the locking groove.

[0013] As a further improvement, when the cross-section of the first protrusion is non-circular, the first groove is adapted to the first protrusion.

[0014] As a further improvement, the bone plate also includes a screw-in portion, which includes a screw-in plate detachably disposed on the second protrusion. The screw-in portion is used to operate and tighten the lower connecting tube and the upper connecting tube.

[0015] As a further improvement, the upper surface of the second protrusion is provided with several limiting grooves, and the lower surface of the swivel plate is provided with several limiting blocks that cooperate with the limiting grooves. When the swivel plate covers the upper surface of the second protrusion, the limiting blocks are respectively embedded in the limiting grooves.

[0016] As a further improvement, the upper surface of the swivel plate is provided with a cross groove.

[0017] As a further improvement, the lower surface of the swivel plate is provided with a guide post. The diameter of the guide post is smaller than the inner diameter of the upper connecting pipe, and the bottom end of the guide post is a tapered structure. When the swivel plate covers the upper surface of the second protrusion, the guide post is inserted into the upper connecting pipe.

[0018] As can be seen from the above description of the structure of this utility model, compared with the prior art, this utility model has the following advantages: In use, according to the required angle of the bone plate, the adjacent first and second ear seats on the two main plates are overlapped, so that the meshing teeth are embedded in the meshing grooves. At this time, the adjacent first connecting holes on the two main plates are aligned with the second connecting holes. The lower connecting tube and the upper connecting tube are respectively inserted into the first and second connecting holes, so that the upper connecting tube and the lower connecting tube are screwed together until the first protrusion and the second protrusion respectively abut against the first ear seat and the second ear seat, thereby fixing the spliced ​​two main plates together for use. This utility model splices multiple main plates of the same shape to form a bone plate, making the bone plate adjustable in length and angle, allowing for flexible adjustment according to the individual differences of different patients, and providing strong versatility. Furthermore, the specifications and dimensions are uniform, avoiding the need for multiple specifications to be stocked, sterilized, and searched for. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a 3D structural diagram of the motherboard.

[0021] Figure 3 This is a three-dimensional structural diagram of the motherboard from another perspective.

[0022] Figure 4 This is a three-dimensional structural diagram of the connecting mechanism.

[0023] Figure 5 This is an exploded structural diagram of the connecting mechanism.

[0024] Figure 6 This is a three-dimensional structural diagram of the connecting mechanism and the engagement part.

[0025] Figure 7 This is a three-dimensional structural diagram of the screw-in section.

[0026] Figure 8 This is a schematic diagram of a three-dimensional structure for another splicing shape of two motherboards.

[0027] Figure 9 This is an exploded view of the two mainboards and the connecting board.

[0028] Figure 10 This is a schematic diagram of the three-dimensional structure after the two motherboards and the connecting board are spliced ​​together.

[0029] Figure 11 This is a schematic diagram of the three-dimensional structure when the cross-section of the first protrusion is not circular.

[0030] Figure 12 A three-dimensional structural diagram showing the hexagonal countersunk hole for the upper connecting pipe. Detailed Implementation

[0031] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0032] As attached Figure 1 and Figure 2 As shown, a splicing bone plate suitable for connection at multiple angles includes a main board 1 and a connecting mechanism 2.

[0033] As attached Figures 1 to 3 As shown, the two end faces of the main board 1 are respectively provided with a first ear seat 11 and a second ear seat 14. The upper surface of the first ear seat 11 is provided with a plurality of meshing teeth 12, at least twenty in number, arranged in a circumferential array. The lower surface of the second ear seat 14 is provided with a plurality of meshing grooves 15 that mate with the meshing teeth 12, arranged in a circumferential array. When splicing the two main boards 1, according to the required angle of the bone plate, the adjacent first ear seats 11 and second ear seats 14 on the two main boards 1 are overlapped, so that the meshing teeth 12 are respectively embedded in the meshing grooves 15 closest to them. While ensuring the accuracy of the bone plate angle to the greatest extent, the inner wall of the meshing groove 15 restricts the outer surface of the meshing teeth 12, enhancing the connection stability between the two main boards 1 and reducing the risk of the two main boards 1 becoming misaligned during installation and fixing, thus affecting use. Furthermore, the surfaces of the spliced ​​two main boards 1 are flat, avoiding discomfort caused by the bone plate during use. The more meshing teeth 12 and meshing grooves 15 there are, the wider the adjustable angle range between the two motherboards 1, and the more precise the angle adjustment.

[0034] Preferably, the peripheral surfaces of the first ear seat 11 and the second ear seat 14 are arc-shaped, which can maximize the rotation angle of the two main plates 1, and at the same time avoid the first ear seat 11 or the second ear seat 14 protruding on the spliced ​​two main plates 1, thus affecting the comfort of using the bone plate.

[0035] Connecting mechanism 2 is used to fix the two motherboards 1 together, as shown in the attached diagram. Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 8As shown, the center of the meshing tooth 12 is provided with a first connecting hole 13 extending to the lower surface of the first ear seat 11, and the center of the meshing groove 15 is provided with a second connecting hole 16 extending to the upper surface of the second ear seat 14. The diameter of the first connecting hole 13 is equal to the diameter of the second connecting hole 16. The connecting mechanism 2 includes a lower connecting tube 21 and an upper connecting tube 22. The outer diameter of the lower connecting tube 21 is equal to the diameter of the first connecting hole 13. The inner wall of the lower connecting tube 21 is provided with internal threads, and the outer wall of the upper connecting tube 22 is provided with internal threads. In use, the lower connecting tube 21 and the upper connecting tube 22 are connected by threads, so that the lower connecting tube 21 can be detachably fitted onto the outside of the upper connecting tube 22. Furthermore, the wall of the bottom opening of the lower connecting pipe 21 protrudes outward to form a first protrusion 211, and the wall of the top opening of the upper connecting pipe 22 protrudes outward to form a second protrusion 221. The cross-sectional areas of both the first protrusion 211 and the second protrusion 221 are larger than the area of ​​the first connecting hole 13. In the two main boards 1 being spliced, the adjacent first connecting holes 13 on the two main boards 1 are aligned with the second connecting holes 16. Then, the lower connecting pipe 21 is inserted into the first connecting hole 13, and the upper connecting pipe 22 is inserted into the second connecting hole 16. During the process, the upper connecting pipe 22 or the lower connecting pipe 21 is rotated to screw the upper connecting pipe 22 and the lower connecting pipe 21 together until the first protrusion 211 presses against the first ear seat 11 and the second protrusion 221 presses against the second ear seat 14, and then the process stops. At this time, the first protrusion 211 and the second protrusion 221 clamp and fix the first ear seat 11 and the second ear seat 14, thereby fixing the two spliced ​​main boards 1 in place. This prevents the spliced ​​bone plate from loosening or shifting during movement or fixing, which would affect its use. Furthermore, if an error or mistake is found in the splicing of the main board 1, the lower connecting tube 21 and the upper connecting tube 22 can be loosened or unscrewed. The main board 1 can then be adjusted and re-fixed for use without discarding it, thus saving resources. The structure for screwing the lower connecting tube 21 and the upper connecting tube 22 together can be implemented as follows:

[0036] Example 1: As shown in the attached document Figures 5 to 7 As shown, the lower connecting pipe 21 and the upper connecting pipe 22 are screwed together and fixed by the screw-in part 3. Specifically, the screw-in part 3 includes a screw-in plate 31, which is detachably mounted on the second protrusion 221. The upper surface of the second protrusion 221 is provided with several limiting grooves 222, and the lower surface of the screw-in plate 31 is provided with several limiting blocks 32 that cooperate with the limiting grooves 222. When the screw-in plate 31 covers the upper surface of the second protrusion 221, the limiting blocks 32 are respectively embedded in the limiting grooves 222. The limiting effect of the inner wall of the limiting groove 222 on the outer surface of the limiting block 32 allows the second protrusion 221 to rotate along with the upper connecting pipe 22 when the screw-in plate 31 is rotated.

[0037] Example 2: As shown in the attached document Figure 12As shown, the upper surface of the second protrusion 221 is provided with a downwardly recessed countersunk hole 223. The countersunk hole 223 is arranged around the opening of the upper connecting pipe 22, and the cross-section of the countersunk hole 223 is a regular hexagon, forming an internal hexagonal hole. In use, the upper connecting pipe 22 is rotated directly by a manual or electric Allen wrench.

[0038] With the above structure, rotating the upper connecting tube 22 completes the screwing and fixing of the lower connecting tube 21 and the upper connecting tube 22, thereby fixing the two spliced ​​main plates 1 together to form a bone plate. In Embodiment 1, after the lower connecting tube 21 and the upper connecting tube 22 are screwed together, the screwing part 3 can be removed from the second protrusion 221, exposing the diameter of the upper connecting tube 22. In Embodiment 2, removing the Allen wrench also exposes the diameter of the upper connecting tube 22. When fixing the spliced ​​bone plate onto the fractured bone fragment, screws are passed through the diameter of the upper connecting tube 22 and connected to the fractured bone fragment, completing the installation of the bone plate. Fixing the bone plate to the fractured bone fragment at the connection points at both ends of the main plate 1 enhances the connection stability at the connection points on the spliced ​​main plate 1, further reducing the risk of loosening during use. It also makes the fixation of the main plate 1 onto the fractured bone fragment more secure, thus providing good support and connection for the fractured bone fragment.

[0039] Preferably, a countersunk hole 223 can also be provided at the opening of the upper connecting tube 22 on the upper surface of the second protrusion 221 in Embodiment 1, so that the head of the screw fixing the bone plate is placed in the countersunk hole 223, preventing the screw head from protruding from the surface of the bone plate, thereby reducing the foreign body sensation of the bone plate in the body. And as shown in the attached... Figure 2 As shown, at least one fixing hole 17 can be provided on the upper surface of the main board 1. The fixing hole 17 penetrates the main board 1 and is used for screws to pass through, helping the main board 1 to be more firmly fixed to the fractured bone fragment. At the same time, a countersunk hole 223 can be provided at the opening of the fixing hole 17 on the surface of the main board 1 for placing the head of the screw.

[0040] Further details are attached. Figure 5 and Figure 7 As shown, the upper surface of the swivel plate 31 in Embodiment 1 can be provided with a cross groove 3a, which facilitates the rotation of the swivel plate 31 using tools such as Phillips screwdrivers and flathead screwdrivers, thereby driving the upper connecting tube 22 to rotate, facilitating the splicing of the bone plate. In addition, the lower surface of the swivel plate 31 is provided with a guide post 33. The diameter of the guide post 33 is smaller than the inner diameter of the upper connecting tube 22, and the bottom end of the guide post 33 has a tapered structure. When the swivel plate 31 covers the upper surface of the second protrusion 221, the guide post 33 is inserted into the upper connecting tube 22. The guide post 33 can play a good guiding role in the placement of the swivel plate 31, facilitating quick and easy alignment of the limiting block 32 and the limiting groove 222.

[0041] In addition, as attached Figure 1 and Figure 2 As shown, the first ear 11 or the second ear 14 on the main board 1 that is spliced ​​to form the bone plate can be connected and fixed by a separate second ear 14 or the first ear 11 that is adapted to it through the connecting mechanism 2. The separate second ear 14 or the first ear 11 fills the main board 1 so that the surface of the spliced ​​bone plate can be flat, avoiding discomfort during use.

[0042] It is worth mentioning that, as shown in the attached document Figures 3 to 5 As shown, when the lower connecting tube 21 and the upper connecting tube 22 are screwed together, the lower connecting tube 21 is fixed on the first ear seat 11. The lower surface of the first ear seat 11 is provided with a first groove 131. The first groove 131 is located around the first connecting hole 13. The first groove 131 is used to fix and place the first protrusion 211. Specifically, when the cross-section of the first protrusion 211 is circular, the upper surface of the first protrusion 211 is provided with a locking block 212, and the bottom of the first groove 131 is provided with a locking groove 132 that cooperates with the locking block 212. When screwing the lower connecting pipe 21 and the upper connecting pipe 22 together, the first protrusion 211 of the lower connecting pipe 21 is pushed into the first groove 131, causing the locking block 212 to embed into the locking slot 132. The inner wall of the locking slot 132 restricts the side of the locking block 212, preventing the lower connecting pipe 21 from rotating during the screwing process, thus ensuring that the lower connecting pipe 21 and the upper connecting pipe 22 can be screwed tightly together. Simultaneously, the first protrusion 211 is placed in the first groove 131 to prevent it from protruding and causing discomfort during use. Additionally, as shown in the attached... Figure 11 As shown, when the cross-section of the first protrusion 211 is non-circular, the first groove 131 is adapted to the first protrusion 211. When screwing the lower connecting pipe 21 and the upper connecting pipe 22 together, the first protrusion 211 of the lower connecting pipe 21 is pushed into the first groove 131. The inner wall of the first groove 131 restricts the side of the first protrusion 211, preventing the lower connecting pipe 21 from rotating during the screwing process, thereby ensuring that the lower connecting pipe 21 and the upper connecting pipe 22 can be screwed tightly together.

[0043] Additionally, as attached Figure 2 and Figure 5 As shown, the upper surface of the second ear seat 14 is provided with a second groove 161. The second groove 161 is located around the second connecting hole 16. The second groove 161 is used to place the second protrusion 221 and can accommodate the rotating second protrusion 221. After the lower connecting tube 21 and the upper connecting tube 22 are screwed together, the second protrusion 221 is placed in the first groove 131 to avoid the second protrusion 221 from protruding and causing discomfort during use.

[0044] In summary, when using this utility model, the number of main plates 1 is selected according to the actual situation of the fractured bone fragments. Based on the required angle of the bone plate, the adjacent first ear seats 11 and second ear seats 14 on the two main plates 1 are overlapped, so that the meshing teeth 12 are respectively embedded in the meshing grooves 15 closest to them. At this time, the adjacent first connecting holes 13 on the two main plates 1 are aligned with the second connecting holes 16. Then, the lower connecting tube 21 is inserted into the first connecting hole 13, and the upper connecting tube 22 is inserted from the second connecting hole 16. During the process, the upper connecting tube 22 is rotated so that the upper connecting tube 22 and the lower connecting tube 21 are screwed together until the first protrusion 211 abuts against the first ear seat 11 and the second protrusion 221 abuts against the second ear seat 14, thereby fixing the spliced ​​two main plates 1 together and preventing the bone plate formed by splicing from loosening or shifting during movement or fixation, which would affect its use. This invention splices multiple identical main plates 1 to form a bone plate, enabling the bone plate to be adjustable in length and angle. This allows for flexible adjustments based on individual patient differences, resulting in high versatility. Furthermore, the standardized dimensions eliminate the need for stocking, sterilizing, and searching for multiple specifications.

[0045] In addition, as attached Figure 9 and Figure 10 As shown, when it is necessary to splice "T"-shaped or "Y"-shaped bone plates, they can be spliced ​​together by using a main plate 1 and a connecting plate 4. Each end face of the connecting plate 4 has a third ear 41. The upper and lower surfaces of the third ear 41 are respectively provided with meshing grooves 15 and meshing teeth 12 that mate with meshing teeth 12 and meshing slots 15 on the main plate 1. The third ear 41 also has a third connecting hole 42 that extends through to the meshing grooves 15 and meshing teeth 12. During splicing, the third ear 41 at one end of the connecting plate 4 is inserted between the connection points of the two overlapping main plates 1, so that the meshing grooves 15 and meshing teeth 12 on the third ear 41 mesh with the meshing teeth 12 and meshing grooves 15 on the two main plates 1. The first connecting hole 13 and the second connecting hole 16 are aligned with the third connecting hole 42. Then, the two main plates 1 and the connecting plate 4 are fixedly connected by the connecting mechanism 2 to complete the splicing of the "T"-shaped and "Y"-shaped bone plates. By simply reducing the thickness of the first ear bracket 11 and the second ear bracket 14, the surface of the main board 1 after splicing can be made flush with the surface of the connecting plate 4. The first ear bracket 11, second ear bracket 14, or third ear bracket 41 on the main board 1 and the connecting plate 4 that are far from the splicing point can be filled with a single, compatible second ear bracket 14 or first ear bracket 11. Therefore, in use, only the connecting plate 4, two sizes of main board 1, and a single second ear bracket 14 or first ear bracket 11 are needed, ensuring usability while reducing the difficulty of finding the correct parts.

[0046] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A splicing bone plate suitable for connections at multiple angles, characterized in that, The bone plate includes: The motherboard has a first lug and a second lug on its two end faces, respectively. The peripheral surfaces of the first lug and the second lug are arc-shaped. The upper surface of the first lug has a plurality of meshing teeth, at least twenty in number, arranged in a circumferential array. The lower surface of the second lug has a plurality of meshing grooves that mate with the meshing teeth, arranged in a circumferential array. The center of each meshing tooth has a first connecting hole that penetrates to the lower surface of the first lug. The center of each meshing groove has a second connecting hole that penetrates to the upper surface of the second lug. The diameter of the first connecting hole is equal to the diameter of the second connecting hole. A connecting mechanism includes a lower connecting pipe and an upper connecting pipe. The outer diameter of the lower connecting pipe is equal to the diameter of the first connecting hole. The lower connecting pipe is detachably sleeved on the outside of the upper connecting pipe. The lower connecting pipe and the upper connecting pipe are connected by threads. The pipe wall at the bottom of the lower connecting pipe protrudes outward to form a first protrusion, and the pipe wall at the top of the upper connecting pipe protrudes outward to form a second protrusion. The cross-sectional areas of the first protrusion and the second protrusion are both larger than the area of ​​the first connecting hole. The lower connecting pipe and the upper connecting pipe act within the first connecting hole and the second connecting hole to fix the two motherboards that are spliced ​​together.

2. The splicing bone plate suitable for multi-angle connections as described in claim 1, characterized in that: The motherboard has at least one fixing hole on its upper surface, and the fixing hole extends through the motherboard.

3. The splicing bone plate suitable for multi-angle connections as described in claim 1, characterized in that: The upper surface of the second ear seat is provided with a second groove, which is located around the second connecting hole. The second groove is used to place the second protrusion and can accommodate the rotating second protrusion.

4. The splicing bone plate suitable for multi-angle connections as described in claim 1, characterized in that: The lower surface of the first ear seat is provided with a first groove, which is located around the first connecting hole. The first groove is used to fix and place the first protrusion.

5. A splicing bone plate suitable for multi-angle connections as described in claim 4, characterized in that: When the first protrusion has a circular cross-section, the upper surface of the first protrusion is provided with a locking block, and the bottom of the first groove is provided with a locking groove that cooperates with the locking block. When the first protrusion is placed in the first groove, the locking block is embedded in the locking groove.

6. A splicing bone plate suitable for multi-angle connections as described in claim 4, characterized in that: When the cross-section of the first protrusion is not circular, the first groove is adapted to the first protrusion.

7. A splicing bone plate suitable for multi-angle connections as described in claim 1, characterized in that: The bone plate also includes a screw-in part, which includes a screw-in plate detachably disposed on the second protrusion. The screw-in part is used to operate and tighten the lower connecting tube and the upper connecting tube.

8. A splicing bone plate suitable for multi-angle connections as described in claim 7, characterized in that: The upper surface of the second protrusion is provided with several limiting grooves, and the lower surface of the swivel plate is provided with several limiting blocks that cooperate with the limiting grooves. When the swivel plate covers the upper surface of the second protrusion, the limiting blocks are respectively embedded in the limiting grooves.

9. A splicing bone plate suitable for multi-angle connections as described in claim 7, characterized in that: The upper surface of the swivel plate is provided with a cross groove.

10. A splicing bone plate suitable for multi-angle connections as described in claim 7, characterized in that: The lower surface of the swivel plate is provided with a guide post. The diameter of the guide post is smaller than the inner diameter of the upper connecting pipe, and the bottom end of the guide post is tapered. When the swivel plate covers the upper surface of the second protrusion, the guide post is inserted into the upper connecting pipe.

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