Self-stabilizing vertebral plate fixing plate

Abstract

The invention discloses a self-stabilization type vertebral plate fixing plate, and relates to the technical field of vertebral plate fixing, the self-stabilization type vertebral plate fixing plate comprises an upper connecting part, a connecting plate and a lower connecting part which are integrally formed, the upper connecting part comprises an upper clamping plate, a limiting plate and a lower clamping plate, the upper clamping plate and the lower clamping plate are clamped at the incision end of a vertebral plate, and the limiting plate is inserted into a limiting groove in the incision end of the vertebral plate; the lower connecting part comprises a lap joint plate and a clamping block, the lap joint plate abuts against the side block, and the clamping block is inserted into the clamping groove of the side block. According to the limiting plate and the clamping block, when the vertebral plate fixing plate is used for fixing a postoperative spine, the limiting groove and the clamping groove are pre-machined in the incision end of the vertebral plate and the side block, then the limiting plate is inserted into the limiting groove, the incision end of the vertebral plate is clamped by the upper clamping plate and the lower clamping plate, finally, the clamping block is inserted into the clamping groove, and the lap joint plate abuts against the side block; the vertebral plate fixing plate can be quickly fixed, and the fixing plate can be mounted without using screws, so that the complicated degree of an operation is reduced, and the operation time is shortened.

Description

Technical Field

[0001] The present application relates to the technical field of vertebral plate fixation, and in particular to a self-stabilizing vertebral plate fixation plate. Background Art

[0002] Laminoplasty is a surgical procedure used to treat cervical spine diseases, especially for multi-segmental cervical disc herniation, ossification of the yellow ligament, ossification of the posterior longitudinal ligament of the cervical spine, and developmental cervical spinal stenosis. Laminoplasty uses the method of laminar osteotomy to open the posterior wall of the spinal canal backward and outward, thereby expanding the area of ​​the bony spinal canal and achieving the purpose of spinal cord decompression.

[0003] At present, lamina fixation plates are widely used in the market to fix the lamina after surgery. The lamina fixation plates are composed of metal plates and screws. The metal plates are fixed to the side masses and the lamina incision ends with screws. In the clinical use, the fixation method combining metal plates and screws requires the fixation plate to be first inserted into the cervical spine, and then the screws are screwed in one by one. Four screws are required to screw into each metal plate. The operation process is cumbersome and the operation time is long. Summary of the invention

[0004] In order to reduce the complexity of surgery and shorten the operation time, the present application provides a self-stabilizing vertebral plate.

[0005] The self-stabilizing lamina fixation plate provided in the present application adopts the following technical solution: A self-stabilizing lamina fixation plate, comprising an integrally formed upper connecting part, a connecting plate and a lower connecting part, the upper connecting part and the lower connecting part are arranged at both ends of the connecting plate, the upper connecting part comprises an upper splint, a limiting plate and a lower splint, the upper splint is arranged at one end of the connecting plate, the lower splint is arranged on the side wall of the connecting plate close to the upper splint, the upper splint and the lower splint are clamped at the lamina incision end, the limiting plate is arranged on the side wall of the connecting plate and is located between the upper splint and the lower splint, the limiting plate is inserted into the limiting groove at the lamina incision end; the lower connecting part comprises a lap plate and a clamping block, the lap plate is arranged at the other end of the connecting plate, the lap plate abuts against the side block, the clamping block is arranged on the lap plate, and the clamping block is inserted into the clamping groove of the side block.

[0006] By adopting the above technical scheme, when using a lamina fixation plate to fix the spine after surgery, first pre-process the limit groove and the clamping groove on the lamina incision end and the side block, then insert the limit plate into the limit groove, and make the upper splint and the lower splint clamp the lamina incision end, finally insert the clamping block into the clamping groove and make the lap plate abut the side block, so that the fixation of the lamina fixation plate can be quickly completed, and 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.

[0007] Preferably, the lower splint includes a first plate body and a second plate body, the first plate body is arranged on the side wall of the connecting plate, the second plate body is arranged at an end of the first plate body away from the connecting plate, the second plate body is parallel to the upper splint, and the upper splint and the second plate body are clamped at the lamina incision end.

[0008] By adopting the above technical solution, the first plate body is arranged so that the second plate body can be parallel to the upper splint. When the lamina incision end is clamped, the upper splint and the second plate body that are parallel to each other make the clamping effect of the splint better.

[0009] Preferably, a connecting block is formed at one end of the limiting plate close to the connecting plate, the connecting block is fixedly connected to the first plate body and the connecting plate, and the limiting plate is arranged at a sharp corner at one end away from the connecting block.

[0010] By adopting the above technical solution, the sharp corner at the end of the limiting plate is set to facilitate the limiting plate to be inserted into the limiting groove at the incision end of the vertebral plate. When 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 plate fixation plate.

[0011] 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 body.

[0012] By adopting the above technical solution, the limit plate is parallel to the upper splint, which facilitates the limit plate to be inserted into the limit groove. The angle between the limit plate and the connecting plate is equal to the angle between the limit plate and the first plate body, making the upper splint and the second plate body more stable when clamping the lamina incision end.

[0013] Preferably, a plurality of clamping teeth are fixedly provided on the side walls of the upper clamping plate and the second plate body that are close to each other, and the length of the upper clamping plate is greater than the length of the second plate body.

[0014] By adopting the above technical solution, when the upper splint and the second plate body clamp the incision end of the vertebral lamina, the clamping teeth increase the clamping stability of the upper splint and the second plate body, 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 splint is greater than the length of the second plate body, further increasing the clamping stability of the upper connecting part, thereby improving the stability of the vertebral lamina fixation plate.

[0015] Preferably, latch teeth are fixedly provided on two opposite side walls of the clamping block, and a sharp corner is provided at the bottom end of the clamping block.

[0016] By adopting the above technical solution, the sharp corner at the bottom of the block facilitates the insertion of the block into the slot. When the block is inserted into the slot, the teeth on both sides of the block are clamped in the 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.

[0017] Preferably, one end of the connecting plate close to the lap plate extends downward to form an abutment bracket, and the abutment bracket abuts against the side of the side block.

[0018] By adopting the above technical solution, after the lamina fixation plate is installed, the abutment is abutted against the side of the side mass, thereby further improving the stability between the lower connecting portion and the side mass.

[0019] Preferably, the upper connecting part, the connecting plate and the lower connecting part are all made of PEEK material.

[0020] By adopting the above technical solution, the vertebral plate fixation plate is made of PEEK, a non-metallic material. The non-metallic material has slow temperature conduction, which reduces the patient's foreign body sensation and is more comfortable after implantation. At the same time, the non-metallic material has no interference with postoperative CT and MRI examinations, which facilitates postoperative review and disease assessment.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. When using the lamina fixation plate to fix the spine after surgery, the limiting groove and the clamping groove are pre-processed on the lamina incision end and the side block, and then the limiting plate is inserted into the limiting groove, so that the upper splint and the lower splint clamp the lamina incision end, and finally the clamping block is inserted into the clamping groove and the lap plate is abutted against the side block, so that the lamina fixation plate can be quickly fixed. 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; 2. With the help of the clamping teeth, when the upper splint and the lower splint clamp the lamina cut end, the clamping teeth increase the clamping stability of the upper splint and the lower splint, making the connection between the upper connecting part and the lamina opening end more stable, thereby improving the stability of the lamina fixation plate; 3. Through the latching teeth, when the clamping block is inserted into the clamping slot, the latching teeth on both sides of the clamping block are clamped in the clamping slot, so that the connection between the lower connecting part and the side block is more stable, thereby improving the stability of the vertebral plate fixation plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the self-stabilizing vertebral plate fixation plate of the present application from a first perspective; Figure 2 This is a second perspective schematic diagram of the overall structure of the self-stabilizing lamina fixation plate of the present application; Figure 3 This is a cross-sectional view of the vertebral structure after laminectomy; Figure 4 This is a cross-sectional view of the vertebral structure fixed by a laminectomy plate.

[0023] Figure numerals: 1, upper connecting part; 11, upper splint; 12, limiting plate; 13, lower splint; 131, first plate body; 132, second plate body; 2, connecting plate; 3, lower connecting part; 31, overlapping plate; 32, clamping block; 4, clamping tooth; 5, clamping tooth; 6, abutment support; 7, connecting block; 8, lamina incision end; 9, limiting groove; 10, side block; 14, clamping groove. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-Figure 4 This application is described in further detail.

[0025] The embodiment of the present application discloses a self-stabilizing vertebral plate.

[0026] 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 which are integrally 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.

[0027] 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 end 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 to a sharp angle.

[0028] The lower clamping plate 13 includes a first plate body 131 and a second plate body 132. The first plate body 131 is fixedly connected to the side of the bottom wall of the connecting plate 2 close to the upper clamping plate 11, and the second plate body 132 is fixedly connected to the end of the first plate body 131 away from the connecting plate 2. A connecting block 7 is formed on the side of the limiting plate 12 away from the pointed end, and the connecting block 7 is fixedly connected to the first plate body 131 and the connecting plate 2.

[0029] A plurality of clamping teeth 4 are integrally formed along the length direction of the upper clamping plate 11 on the bottom wall near the limiting plate 12 and the top wall near the limiting plate 12 of the second plate body 132. The upper clamping plate 11, the limiting plate 12 and the second plate body 132 are parallel to each other, the length of the upper clamping plate 11 is greater than the length of the second plate body 132, the length of the second plate body 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 body 131.

[0030] Reference Figure 3 and Figure 4The limiting groove 9 is pre-processed on the end surface of the lamina incision end 8. When the lamina is fixed after surgery, the limiting plate 12 is inserted into the limiting groove 9, and the upper clamping plate 11 and the second plate body 132 are used to clamp the lamina incision end 8 from the upper and lower sides of the lamina incision end 8, so that the upper connecting part 1 can be connected to the lamina incision end 8. At this time, the clamping teeth 4 on the upper clamping plate 11 and the lower clamping plate 13 increase the clamping stability of the upper clamping plate 11 and the lower clamping plate 13, so that the upper connecting part 1 is not easy to slip off from the lamina incision end 8.

[0031] Reference Figure 1 and Figure 2 The lower connecting part 3 includes a lap plate 31 and a clamping block 32. The lap plate 31 is fixedly connected to the end of the connecting plate 2 away from the upper connecting part 1. The lap plate 31 is parallel to the limit plate 12. The clamping block 32 is fixedly connected to the end of the lap plate 31 away from the connecting plate 2 in a direction perpendicular to the lap plate 31. A support 6 is formed at the connection between the connecting plate 2 and the lap plate 31 in a direction close to the clamping block 32. The side wall of the support 6 is in contact with the side wall of the side block 10. The middle part of the opposite side walls of the clamping block 32 is integrally formed with a clamping tooth 5, and the bottom end of the clamping block 32 is set to a sharp angle.

[0032] Reference Figure 3 and Figure 4 A slot 14 is pre-processed on the top surface of the side block 10. After the upper connection part 1 is connected to the lamina cut end 8, the block 32 is knocked into the slot 14 so that the lap plate 31 abuts against the top surface of the side block 10, and the lower connection part 3 can be connected to the side block 10. At this time, the abutment bracket 6 abuts against the side of the side block 10, and the clamping teeth 5 clamp the block 32 in the slot 14, so that the connection between the lower connection part 3 and the side block 10 is more stable.

[0033] The implementation principle of a self-stabilizing lamina fixation plate in the embodiment of the present application is as follows: first insert the limit plate 12 into the limit groove 9, use the upper splint 11 and the lower splint 13 to clamp the lamina incision end 8 from the upper and lower sides of the lamina incision end 8, and then connect the upper connecting part 1 with the lamina incision end 8, and then knock the clamping block 32 into the clamping groove 14, so that the lap plate 31 abuts against the top surface of the side block 10, and then connect the lower connecting part 3 with the side block 10. The structure using screws is cancelled and replaced with an insertion (knock-in) installation method, which makes the installation of the lamina fixation plate faster, reduces the complexity of the operation, reduces the operation time, reduces the amount of bleeding during the operation, and reduces the postoperative recovery time. At the same time, the lamina fixation plate made of non-metallic materials has slow temperature conduction, reduces the patient's foreign body sensation, and is more comfortable after implantation. The lamina fixation plate made of non-metallic materials does not interfere with postoperative CT and MRI examinations, which is convenient for postoperative review and disease assessment.

[0034] The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A self-stabilizing vertebral plate fixation plate, comprising an upper connecting portion (1), a connecting plate (2) and a lower connecting portion (3) formed in one piece, wherein the upper connecting portion (1) and the lower connecting portion (3) are arranged at both ends of the connecting plate (2), characterized in that: The upper connecting part (1) comprises an upper splint (11), a limiting plate (12) and a lower splint (13); the upper splint (11) is arranged at one end of the connecting plate (2); the lower splint (13) is arranged on the side wall of the connecting plate (2) close to the upper splint (11); the upper splint (11) and the lower splint (13) are clamped at the lamina incision end (8); the limiting plate (12) is arranged on the side wall of the connecting plate (2) and is located between the upper splint (11) and the lower splint (13); the limiting plate (12) is inserted into the limiting groove (9) of the lamina incision end (8); the lower connecting part (3) comprises a lap plate (31) and a clamping block (32); the lap plate (31) is arranged at the other end of the connecting plate (2); the lap plate (31) abuts against the side block (10); the clamping block (32) is arranged on the lap plate (31 ... The block (32) is inserted into the slot (14) of the side block (10); the lower clamping plate (13) comprises a first plate body (131) and a second plate body (132), the first plate body (131) is arranged on the side wall of the connecting plate (2), the second plate body (132) is arranged at an end of the first plate body (131) away from the connecting plate (2), the second plate body (132) is parallel to the upper clamping plate (11), and the upper clamping plate (11) and the second plate body (132) are clamped at the lamina incision end (8), a plurality of clamping teeth (4) are fixedly arranged on the side walls of the upper clamping plate (11) and the second plate body (132) close to each other, and the length of the upper clamping plate (11) is greater than the length of the second plate body (132), clamping teeth (5) are fixedly arranged on the opposite side walls of the clamping block (32), and the bottom end of the clamping block (32) is provided with a sharp angle.

2. A self-stabilizing lamina fixation plate according to claim 1, characterized in that: A connecting block (7) is formed at one end of the limiting plate (12) close to the connecting plate (2); the connecting block (7) is fixedly connected to the first plate body (131) and the connecting plate (2); and a sharp corner is arranged at one end of the limiting plate (12) away from the connecting block (7).

3. The self-stabilizing lamina fixation plate according to claim 1, 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 body (131).

4. The self-stabilizing lamina fixation plate according to claim 1, characterized in that: One end of the connecting plate (2) close to the lap plate (31) extends downward to form a support bracket (6), and the support bracket (6) is in contact with the side of the side block (10).

5. The self-stabilizing lamina fixation plate 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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