A self-stabilizing laminar fixation plate

Abstract

The application discloses a self-stabilizing lamina fixation plate, relates to the technical field of lamina fixation, and comprises an integrally-formed upper connecting portion, a connecting plate and a lower connecting portion. The upper connecting portion comprises upper clamping plates, limiting plates and lower clamping plates. The upper clamping plates and the lower clamping plates are clamped at the end of a lamina incision, and the limiting plates are inserted into limiting grooves at the end of the lamina incision. The lower connecting portion comprises overlapping plates and clamping blocks. The overlapping plates abut against side blocks, and the clamping blocks are inserted into clamping grooves in the side blocks. The limiting plates and the clamping blocks are used to fix the postoperative spine by using the lamina fixation plate. The limiting grooves and the clamping grooves are pre-processed on the end of the lamina incision and the side blocks, the limiting plates are inserted into the limiting grooves, the upper clamping plates and the lower clamping plates clamp the end of the lamina incision, the clamping blocks are inserted into the clamping grooves, and the overlapping plates abut against the side blocks. Therefore, the fixation of the lamina fixation plate can be quickly completed, the installation of the fixation plate does not need to use screws, the degree of surgical complexity is reduced, and the operation time is shortened.

Description

Technical Field

[0001] This application relates to the field of laminoplasty technology, and in particular to a self-stabilizing laminoplasty plate. Background Technology

[0002] Laminectomy is a surgical procedure used to treat cervical spine diseases, particularly suitable for multi-segmental cervical disc herniation, ossification of the ligamentum flavum, ossification of the posterior longitudinal ligament of the cervical spine, and developmental cervical spinal stenosis. Laminectomy involves osteotomy of the vertebral laminae to open the posterior wall of the spinal canal posteriorly and laterally, thereby increasing the area of ​​the bony spinal canal and achieving spinal cord decompression.

[0003] Currently, laminectomy plates are widely used in the market to fix the vertebral lamina after surgery. These plates consist of metal plates and screws, with the screws securing the metal plate to the lateral mass and the incision end of the laminectomy. This combination of metal plates and screws requires, in clinical practice, first inserting the plate into the cervical spine, then individually screwing in the screws. Each metal plate requires four screws, making the procedure cumbersome and time-consuming. Utility Model Content

[0004] To reduce the complexity of surgery and shorten the operation time, this application provides a self-stabilizing laminar fixation plate.

[0005] The self-stabilizing vertebral laminar fixation plate provided in this application adopts the following technical solution:

[0006] A self-stabilizing laminar incision plate includes an integrally formed upper connecting part, a connecting plate, and a lower connecting part. The upper and lower connecting parts are located at both ends of the connecting plate. The upper connecting part includes an upper clamping plate, a limiting plate, and a lower clamping plate. The upper clamping plate is located at one end of the connecting plate, and the lower clamping plate is located on the side wall of the connecting plate near the upper clamping plate. The upper and lower clamping plates are clamped at the laminar incision end. The limiting plate is located on the side wall of the connecting plate and between the upper and lower clamping plates. The limiting plate is inserted into a limiting groove at the laminar incision end. The lower connecting part includes an overlapping plate and a locking block. The overlapping plate is located at the other end of the connecting plate and abuts against a side block. The locking block is located on the overlapping plate and is inserted into a locking groove in the side block.

[0007] By adopting the above technical solution, when using a laminar fixation plate to fix the spine after surgery, firstly, limiting grooves and locking grooves are pre-processed on the incision end of the laminar plate and the lateral mass. Then, the limiting plate is inserted into the limiting groove, and the upper and lower clamps are used to clamp the incision end of the laminar plate. Finally, the locking block is inserted into the locking groove and the overlapping plate abuts against the lateral mass, which can quickly complete the fixation of the laminar plate. The installation of the fixation plate does not require the use of screws, thereby reducing the complexity of the operation and shortening the operation time.

[0008] Preferably, the lower clamping plate includes a first plate and a second plate. The first plate is disposed on the side wall of the connecting plate, and the second plate is disposed at the end of the first plate away from the connecting plate. The second plate is parallel to the upper clamping plate, and the upper clamping plate and the second plate are clamped at the vertebral incision end.

[0009] By adopting the above technical solution, the first plate is set so that the second plate can be parallel to the upper clamping plate. When clamping the vertebral lamina incision end, the parallel upper clamping plate and the second plate make the clamping effect of the clamping plate better.

[0010] Preferably, a connecting block is formed at one end of the limiting plate near the connecting plate, the connecting block is fixedly connected to the first plate and the connecting plate, and the end of the limiting plate away from the connecting block is provided with a sharp corner.

[0011] By adopting the above technical solution, the pointed end of the limiting plate is provided with a limiting groove to facilitate the insertion of the limiting plate into the vertebral lamina incision end. After the limiting plate is inserted into the limiting groove, the connecting block increases the connection strength between the limiting plate, the connecting plate, and the first plate body, thereby improving the stability of the vertebral lamina fixation plate.

[0012] Preferably, the limiting plate is parallel to the upper clamping plate, and the angle between the limiting plate and the connecting plate is equal to the angle between the limiting plate and the first plate.

[0013] By adopting the above technical solution, the limiting plate is parallel to the upper clamping plate, which facilitates the insertion of the limiting plate into the limiting groove. The angle between the limiting plate and the connecting plate is equal to the angle between the limiting plate and the first plate, making the upper clamping plate and the second plate more stable when clamping the vertebral lamina incision end.

[0014] Preferably, multiple clamping teeth are fixedly provided on the side walls of the upper clamping plate and the second plate that are close to each other, and the length of the upper clamping plate is greater than the length of the second plate.

[0015] By adopting the above technical solution, when the upper clamp and the second plate clamp the incision end of the vertebral lamina, the clamping teeth increase the clamping stability of the upper clamp and the second plate, making the connection between the upper connecting part and the opening end of the vertebral lamina more stable. At the same time, the length of the upper clamp is greater than the length of the second plate, which further increases the clamping stability of the upper connecting part, thereby improving the stability of the vertebral lamina fixation plate.

[0016] Preferably, the card block has teeth fixedly provided on both opposite side walls, and the bottom end of the card block has a pointed corner.

[0017] By adopting the above technical solution, the sharp corner at the bottom of the card block facilitates the insertion of the card block into the card slot. When the card block is inserted into the card slot, the teeth on both sides of the card block are locked in the card slot, making the connection between the lower connecting part and the side block more stable, thereby improving the stability of the vertebral plate fixation plate.

[0018] Preferably, the end of the connecting plate near the overlapping plate extends downward to form a backing bracket, which abuts against the side of the side block.

[0019] By adopting the above technical solution, after the vertebral lamina fixation plate is installed, the abutment is placed against the side of the side block, thereby further improving the stability between the lower connection part and the side block.

[0020] Preferably, the upper connecting part, the connecting plate, and the lower connecting part are all made of PEEK material.

[0021] By adopting the above technical solution, the lamina fixation plate is made of PEEK, a non-metallic material. Non-metallic materials have slow temperature conduction, reducing the patient's foreign body sensation and making the implantation more comfortable. At the same time, non-metallic materials do not interfere with postoperative CT and MRI examinations, which facilitates postoperative follow-up and condition assessment.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. When using a vertebral laminator to fix the spine after surgery, a limiting groove and a locking groove are pre-machined on the incision end of the vertebral laminator and the lateral mass. The limiting plate is then inserted into the limiting groove, so that the upper and lower splints clamp the incision end of the vertebral laminator. Finally, the locking block is inserted into the locking groove and the overlapping plate abuts against the lateral mass. The fixation of the vertebral laminator can be completed quickly. The installation of the fixation plate does not require the use of screws, thereby reducing the complexity of the operation and shortening the operation time.

[0024] 2. With the help of clamping teeth, when the upper and lower clamping plates clamp the incision end of the vertebral lamina, the clamping teeth increase the clamping stability of the upper and lower clamping plates, making the connection between the upper connecting part and the opening end of the vertebral lamina more stable, thereby improving the stability of the vertebral lamina fixation plate.

[0025] 3. With the locking teeth, when the locking block is inserted into the locking slot, the locking teeth on both sides of the locking block are locked in the locking slot, making the connection between the lower connecting part and the side block more stable, thereby improving the stability of the vertebral plate fixation plate. Attached Figure Description

[0026] Figure 1 This is a first-view schematic diagram of the overall structure of the self-stabilizing vertebral laminator fixation plate of this application.

[0027] Figure 2 This is a second-view schematic diagram of the overall structure of the self-stabilizing vertebral laminator fixation plate of this application.

[0028] Figure 3 This is a cross-sectional view of the vertebral body structure after laminectomy.

[0029] Figure 4 This is a cross-sectional view of the vertebral body structure after laminectomy, which is then fixed by a laminectomy plate.

[0030] Reference numerals: 1. Upper connecting part; 11. Upper clamping plate; 12. Limiting plate; 13. Lower clamping plate; 131. First plate body; 132. Second plate body; 2. Connecting plate; 3. Lower connecting part; 31. Overlapping plate; 32. Locking block; 4. Clamping tooth; 5. Locking tooth; 6. Abutment support; 7. Connecting block; 8. Vertebral incision end; 9. Limiting groove; 10. Side block; 11. Locking groove. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0032] This application discloses a self-stabilizing vertebral laminar incision plate.

[0033] Reference Figure 1 and Figure 2 A self-stabilizing lamina fixation plate includes an upper connecting part 1, a connecting plate 2, and a lower connecting part 3, all made of PEEK material. The upper connecting part 1 is connected to the lamina incision end 8, the lower connecting part 3 is connected to the side block 10, and the connecting plate 2 connects the upper connecting part 1 and the lower connecting part 3.

[0034] The upper connecting part 1 includes an upper clamping plate 11, a limiting plate 12 and a lower clamping plate 13. The upper clamping plate 11, the limiting plate 12 and the lower clamping plate 13 are all fixedly connected to the top of the connecting plate 2. The limiting plate 12 is located between the upper clamping plate 11 and the lower clamping plate 13, and the end of the limiting plate 12 away from the connecting plate 2 is set with a sharp corner.

[0035] The lower clamping plate 13 includes a first plate 131 and a second plate 132. The first plate 131 is fixedly connected to the bottom wall of the connecting plate 2 on the side near the upper clamping plate 11. The second plate 132 is fixedly connected to the end of the first plate 131 away from the connecting plate 2. A connecting block 7 is formed on the side of the limiting plate 12 away from the sharp corner. The connecting block 7 is fixedly connected to the first plate 131 and the connecting plate 2.

[0036] Multiple clamping teeth 4 are integrally formed along their length on the bottom wall of the upper clamping plate 11 near the limiting plate 12 and the top wall of the second plate 132 near the limiting plate 12. The upper clamping plate 11, the limiting plate 12, and the second plate 132 are parallel to each other. The length of the upper clamping plate 11 is greater than the length of the second plate 132, the length of the second plate 132 is greater than the length of the limiting plate 12, and the angle between the limiting plate 12 and the connecting plate 2 is equal to the angle between the limiting plate 12 and the first plate 131.

[0037] Reference Figure 3 and Figure 4A limiting groove 9 is pre-machined on the end face of the lamina incision end 8. When fixing the lamina after surgery, the limiting plate 12 is inserted into the limiting groove 9, and the upper splint 11 and the second plate 132 are used to clamp the lamina incision end 8 from the upper and lower sides, thereby connecting the upper connecting part 1 to the lamina incision end 8. At this time, the clamping teeth 4 on the upper splint 11 and the lower splint 13 increase the clamping stability of the upper splint 11 and the lower splint 13, so that the upper connecting part 1 is not easy to slip off from the lamina incision end 8.

[0038] Reference Figure 1 and Figure 2 The lower connecting part 3 includes an overlapping plate 31 and a locking block 32. The overlapping plate 31 is fixedly connected to the end of the connecting plate 2 away from the upper connecting part 1, and the overlapping plate 31 is parallel to the limiting plate 12. The locking block 32 is fixedly connected to the end of the overlapping plate 31 away from the connecting plate 2 along a direction perpendicular to the overlapping plate 31. The connection between the connecting plate 2 and the overlapping plate 31 extends towards the locking block 32 to form an abutment 6, and the side wall of the abutment 6 abuts against the side wall of the side block 10. The locking block 32 has locking teeth 5 integrally formed in the middle of the opposite side walls, and the bottom end of the locking block 32 is set with a sharp corner.

[0039] Reference Figure 3 and Figure 4 The top surface of the side block 10 has a pre-machined groove 11. After the upper connecting part 1 is connected to the vertebral incision end 8, the locking block 32 is hammered into the groove 11, so that the overlapping plate 31 abuts against the top surface of the side block 10, thereby connecting the lower connecting part 3 to the side block 10. At this time, the abutment 6 is pressed against the side of the side block 10, and the locking teeth 5 lock the locking block 32 in the groove 11, thereby making the connection between the lower connecting part 3 and the side block 10 more stable.

[0040] The implementation principle of a self-stabilizing laminar fixation plate in this embodiment is as follows: First, the limiting plate 12 is inserted into the limiting groove 9. The upper clamp 11 and the lower clamp 13 are used to clamp the laminar incision end 8 from the upper and lower sides, thus connecting the upper connecting part 1 to the laminar incision end 8. Then, the locking block 32 is hammered into the locking groove 11, so that the overlapping plate 31 abuts against the top surface of the side block 10, thus connecting the lower connecting part 3 to the side block 10. The screw structure is eliminated and replaced with an insertion (hammering) installation method, which makes the installation of the laminar fixation plate faster, reduces the complexity of the operation, reduces the operation time, reduces the amount of bleeding during operation, and reduces the postoperative recovery time. At the same time, the non-metallic material laminar fixation plate has slow temperature conduction, reduces the patient's foreign body sensation, and is more comfortable after implantation. In addition, the non-metallic material laminar fixation plate does not interfere with postoperative CT and MRI examinations, which facilitates postoperative follow-up and condition assessment.

[0041] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A self-stabilizing vertebral laminar insulator, comprising an integrally formed upper connecting part (1), a connecting plate (2), and a lower connecting part (3), wherein the upper connecting part (1) and the lower connecting part (3) are disposed at both ends of the connecting plate (2), characterized in that: The upper connecting part (1) includes an upper clamping plate (11), a limiting plate (12), and a lower clamping plate (13). The upper clamping plate (11) is disposed at one end of the connecting plate (2), and the lower clamping plate (13) is disposed on the side wall of the connecting plate (2) near the upper clamping plate (11). The upper clamping plate (11) and the lower clamping plate (13) clamp the vertebral incision end (8). The limiting plate (12) is disposed on the side wall of the connecting plate (2) and located between the upper clamping plate (11) and the lower clamping plate (13). Between the plates (13), the limiting plate (12) is inserted into the limiting groove (9) of the vertebral incision end (8); the lower connecting part (3) includes a lap plate (31) and a locking block (32). The lap plate (31) is disposed at the other end of the connecting plate (2) and abuts against the side block (10). The locking block (32) is disposed on the lap plate (31) and is inserted into the locking groove (11) of the side block (10).

2. The self-stabilizing vertebral laminar insulator according to claim 1, characterized in that: The lower clamp (13) includes a first plate (131) and a second plate (132). The first plate (131) is disposed on the side wall of the connecting plate (2), and the second plate (132) is disposed at the end of the first plate (131) away from the connecting plate (2). The second plate (132) is parallel to the upper clamp (11), and the upper clamp (11) and the second plate (132) are clamped at the vertebral incision end (8).

3. The self-stabilizing vertebral laminar inertial fixation plate according to claim 2, characterized in that: A connecting block (7) is formed at one end of the limiting plate (12) near the connecting plate (2). The connecting block (7) is fixedly connected to the first plate (131) and the connecting plate (2), and the end of the limiting plate (12) away from the connecting block (7) is set with a sharp corner.

4. The self-stabilizing vertebral laminar fixation plate according to claim 2, characterized in that: The limiting plate (12) is parallel to the upper clamping plate (11), and the angle between the limiting plate (12) and the connecting plate (2) is equal to the angle between the limiting plate (12) and the first plate (131).

5. The self-stabilizing laminar fixation plate according to claim 2, characterized in that: Multiple clamping teeth (4) are fixedly provided on the side walls of the upper clamping plate (11) and the second plate (132) that are close to each other, and the length of the upper clamping plate (11) is greater than the length of the second plate (132).

6. The self-stabilizing laminar fixation plate according to claim 1, characterized in that: The card block (32) has teeth (5) fixedly provided on both sides of its opposite side walls, and the bottom end of the card block (32) is provided with a sharp corner.

7. The self-stabilizing laminar fixation plate according to claim 1, characterized in that: The connecting plate (2) extends downward near the overlapping plate (31) to form an abutment (6), which abuts against the side of the side block (10).

8. The self-stabilizing vertebral laminar insulator according to claim 1, characterized in that: The upper connecting part (1), the connecting plate (2) and the lower connecting part (3) are all made of PEEK material.

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