Vertebral plate embedded type cervical vertebra operation fixing plate

Abstract

The utility model provides a vertebral plate embedded type cervical vertebra operation fixing plate, which belongs to the technical field of medical instruments and comprises a supporting part, an inner side fixing part and an outer side fixing part, the supporting part is arranged in the middle, and the inner side fixing part and the outer side fixing part are arranged on two sides of the supporting part. The supporting part, the inner side fixing part and the outer side fixing part are integrally connected; the inner side fixing part is in a U shape, one edge of the U shape is fixedly connected with the supporting part, and the other edge of the U shape extends towards the side away from the supporting part. The utility model provides a vertebral plate embedded type cervical vertebra operation fixing plate which can solve the problems that an existing cervical vertebra operation fixing plate needs to intrude into a vertebral canal to occupy the space of the vertebral canal, spinal cord injuries are caused by too long screws, fixing is not firm due to too short screws and the like. And meanwhile, the problem of fixation after spinous process incision in the improved cervical vertebra canalis spinalis enlargement plasty can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a vertebral plate embedded cervical vertebra surgery fixation plate. Background Art

[0002] Cervical laminoplasty is a method of treating cervical spine diseases. It is currently mainly used for cervical spinal stenosis, cervical disc herniation, ossification of the posterior longitudinal ligament of the cervical spine and other diseases. The purpose of this operation is to relieve the compression of the neural tissue by expanding the volume of the cervical spinal canal. The surgical procedure of cervical laminoplasty is as follows: the patient needs to undergo a detailed examination and evaluation before the operation to ensure the safety and effectiveness of the operation; the patient needs to undergo general anesthesia during the operation to ensure safety during the operation; the skin of the surgical site needs to be disinfected to prevent infection; during the operation, the doctor will expose the anatomical structures of the cervical vertebrae, spinous processes, lateral masses, etc. through a skin incision, and use surgical instruments such as high-speed grinding drills, ultrasonic bone knives and lamina rongeurs to make grooves at the junction of the lamina and lateral masses of the affected area, and on the "portal axis" side, The dorsal cortical bone and part of the cancellous bone are removed, and the ventral cortical bone is retained. On the "door opening" side, the dorsal cortical bone, cancellous bone and ventral cortical bone are removed, and then the "door opening" operation is performed; currently, most spinal implant internal fixation materials are made of titanium alloy. This type of material has good biocompatibility and can be in contact with human tissue for a long time without causing rejection reactions; the doctor will use screws, steel plates and other materials to fix the enlarged cervical spinal canal to maintain the volume of the spinal canal and improve the bone fusion effect; after the operation, the doctor will suture the incision and place a drainage tube. The drainage tube can help discharge the bleeding and exudate during the operation, prevent hematoma compression and infection; after the operation, the patient needs to rest and recover to promote wound healing and recovery. Cervical laminoplasty can treat nerve compression caused by diseases such as cervical spinal stenosis, cervical disc herniation and ossification of the posterior longitudinal ligament of the cervical spine, improve the patient's pain, numbness, weakness, unstable walking, abnormal defecation, paralysis and other symptoms, improve the quality of life, and prevent complications caused by cervical diseases.

[0003] The fixed steel plates used in existing cervical laminoplasty often need to invade the spinal canal to support the vertebral plate, occupying the internal space of the spinal canal. The length of the screws is often selected based on experience, and screws that are too long may damage nerve tissue. The current improved cervical laminoplasty reduces the stripping and damage to the paravertebral soft tissue of the cervical spine by cutting off the spinous process. After the spinal canal is expanded and fixed, the spinous process is reconstructed. However, there are currently no suitable internal fixation steel plates or other materials. Utility Model Content

[0004] In view of this, the utility model provides a vertebral plate embedded cervical vertebra surgery fixation plate, which can solve the problems of existing cervical vertebra surgery fixation plates needing to invade the inside of the vertebral canal and occupy the vertebral canal space, spinal cord injury caused by too long screws, and unstable fixation caused by too short screws. It can provide better support and fixation for traditional cervical laminoplasty, and can also solve the fixation problem after spinous process incision in improved cervical laminoplasty.

[0005] The utility model is achieved in this way:

[0006] The utility model provides a vertebral plate embedded cervical vertebra surgery fixation plate, which comprises a support part, an inner fixing part and an outer fixing part, wherein the support part is arranged in the middle part, the inner fixing part and the outer fixing part are arranged on both sides of the support part, and the support part, the inner fixing part and the outer fixing part are connected as one body;

[0007] The inner fixing portion is U-shaped, wherein one side of the U-shape is fixedly connected to the supporting portion, and the other side extends to a side away from the supporting portion;

[0008] The inner fixing part includes a first fixing part and a second extended fixing part, the first fixing part is one side of the U-shape connected to the supporting part, and the second extended fixing part is the other side, the first fixing part is inserted into the vertebral lamina medullary cavity of the cervical vertebra for fixation, the second extended fixing part is fixedly connected to the cervical spinous process and accessory ligament, and the outer fixing part is fixedly connected to the lateral mass of the cervical vertebra.

[0009] The technical effects of a vertebral plate embedded cervical vertebra surgery fixation plate provided by the utility model are as follows: by arranging the supporting part, the inner fixing part and the outer fixing part, it is possible to solve the problems that the existing cervical vertebra surgery fixation plate needs to invade the inside of the spinal canal and occupy the spinal canal space, the screw is too long to cause spinal cord injury, and the screw is too short to cause unreliable fixation, etc., and can provide better support and fixation for traditional cervical vertebra laminoplasty, and at the same time can also solve the fixation problem after spinous process incision in the improved cervical vertebra laminoplasty; by arranging the first fixing part to be inserted into the medullary cavity inside the vertebral plate for fixation, it is possible to solve the problems that the existing cervical vertebra surgery fixation plate invades the inside of the spinal canal, causing the spinal canal space to shrink and the risk of spinal cord injury to increase, and achieve better surgical effects; by arranging the second extended fixing part to be fixedly connected with the cervical spinous process and the accessory ligament, it is possible to solve the problem that the existing cervical vertebra surgery fixation plate is too short in length when fixed in the vertebral plate and the spinous process, resulting in the inability to fix and reconstruct the cut spinous process.

[0010] On the basis of the above technical solution, the vertebral plate embedded cervical vertebra surgery fixation plate of the utility model can also be improved as follows:

[0011] The first fixing part and the second extended fixing part are arranged in parallel on both sides, and the distance between the two sides is less than the thickness of the cervical vertebral plate, so as to insert the first fixing part into the medullary cavity inside the vertebral plate to reduce the space occupied in the spinal canal.

[0012] The beneficial effect of adopting the above-mentioned improved scheme is: by setting the two sides of the first fixing part and the second extended fixing part in parallel, and the distance between the two sides is less than the thickness of the cervical vertebral lamina, the first fixing part is inserted into the vertebral lamina medullary cavity, which can solve the problems of the existing cervical surgical fixation plate being fixed inside the cervical vertebral canal, which will cause the vertebral canal space to be reduced and the risk of spinal cord injury to increase.

[0013] Furthermore, the support portion is an arc-shaped structure, and both ends of the support portion are located between the vertebral plate of the cervical vertebra and the lateral masses of the cervical vertebra, and the curvature of the support portion is related to the distance and angle between the vertebral plate and the lateral masses during cervical laminoplasty.

[0014] Furthermore, the outer fixing part includes a clamping piece and a positioning fixing piece, and the clamping piece and the positioning fixing piece are both connected to the supporting part at an angle, and the angle between the clamping piece and the positioning fixing piece is engaged with the inner side of the lateral mass of the cervical vertebra, and is used to support the supporting part to fix the position of the vertebral plate of the cervical vertebra.

[0015] Furthermore, the angle between the locking member and the positioning fixing member is greater than 90° and less than 180°.

[0016] Furthermore, the positioning fixing member is symmetrically provided with two through holes, the through holes are used for fixing screws, and the screws are used for fixing the supporting part on the lateral mass of the cervical vertebra of the patient.

[0017] Furthermore, the second extended fixing portion is arranged to fit the bending angle between the cervical vertebral lamina and the spinous process, and a plurality of through holes are arranged at one end of the second extended fixing portion away from the first fixing portion, wherein the distal through hole is used to fix the spinous process, and the through holes on both sides are used to fix the spinous process accessory ligament.

[0018] Furthermore, the first fixing portion and the second extending fixing portion are provided with screw holes at upper and lower sides corresponding to the first fixing portion, and the screw holes are used to fix the inner fixing portion to the vertebral plate of the patient's cervical vertebra by means of through-fixation of the screws.

[0019] The screw only passes through the outer cortical bone and the inner cancellous bone, and does not pass through the inner cortical bone.

[0020] Furthermore, the length of the second extended fixing portion reaches the position of the patient's cervical spinous process, which is used to solve the fixation and reconstruction problems after the spinous process is cut during the improved cervical laminoplasty.

[0021] The beneficial effect of adopting the above-mentioned improved solution is: by setting the length of the second extended fixing portion to reach the position of the patient's cervical spinous process, stable fixation can be provided and the bone fusion effect can be improved.

[0022] Furthermore, the top of the second extended fixing portion is arranged in a cross shape, and a through hole is arranged in each direction, the distal through hole is used to fix the spinous process, and the through holes on both sides are used to fix the spinous process accessory ligament tissue.

[0023] Compared with the prior art, the beneficial effects of a vertebral plate embedded cervical vertebra surgery fixation plate provided by the utility model are as follows: by providing the supporting part, the inner fixing part and the outer fixing part, it is possible to solve the problems of the existing cervical vertebra surgery fixation plate needing to invade the interior of the spinal canal and occupy the spinal canal space, the screw being too long causing spinal cord injury, the screw being too short causing unreliable fixation, etc., and it can provide better support and fixation for the traditional cervical vertebra laminoplasty, and it can also solve the fixation problem after spinous process incision in the improved cervical vertebra laminoplasty; by providing the first fixing part to be inserted into the medullary cavity inside the vertebral plate for fixation, it is possible to solve the problems of the existing cervical vertebra surgery fixation plate invading the internal space of the cervical vertebral canal, causing space reduction, increased risk of spinal cord injury, etc., and achieve better surgical effects; by providing the second extended fixing part to be fixedly connected to the cervical spinous process and the accessory ligament, it is possible to solve the problem that the existing cervical vertebra surgery fixation plate is too short to be fixed in the vertebral plate and the spinous process, resulting in the inability to fix and reconstruct the cut spinous process. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0025] Figure 1 It is a structural schematic diagram of a vertebral plate embedded cervical vertebra surgery fixation plate;

[0026] Figure 2 A schematic diagram of the position of a vertebral plate embedded in a cervical vertebra surgery fixation plate connected and fixed to the cervical vertebra;

[0027] Figure 3 It is a structural schematic diagram of a vertebral plate embedded cervical vertebra surgery fixation plate according to the second embodiment;

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 10. Support part; 20. Inner fixing part; 21. First fixing part; 22. Second extending fixing part; 30. Outer fixing part; 31. Positioning member; 32. Positioning fixing member. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the implementation mode of the present invention clearer, the technical solution in the implementation mode of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation mode of the present invention.

[0031] like Figure 1-2 As shown, it is a first embodiment of a vertebral plate embedded cervical vertebra surgery fixation plate provided by the utility model. In this embodiment, it includes a support portion 10, an inner fixing portion 20 and an outer fixing portion 30. The support portion 10 is arranged in the middle, and the inner fixing portion 20 and the outer fixing portion 30 are arranged on both sides of the support portion 10. The support portion 10, the inner fixing portion 20 and the outer fixing portion 30 are connected as one body;

[0032] The inner fixing portion 20 is U-shaped, wherein one side of the U-shape is fixedly connected to the supporting portion 10, and the other side extends to a side away from the supporting portion 10;

[0033] The inner fixing portion 20 includes a first fixing portion 21 and a second extended fixing portion 22. The first fixing portion 21 is one side of the U-shape connected to the supporting portion 10, and the second extended fixing portion 22 is the other side. The first fixing portion 21 is inserted into the vertebral lamina medullary cavity of the cervical vertebra for fixation, the second extended fixing portion 22 is fixedly connected to the cervical spinous process and accessory ligaments, and the outer fixing portion 30 is fixedly connected to the lateral mass of the cervical vertebra.

[0034] Among them, in the above technical solution, the first fixing part 21 and the second extended fixing part 22 are arranged in parallel on both sides, and the distance between the two sides is less than the thickness of the cervical vertebral plate, which is used to insert the first fixing part 21 into the vertebral plate medullary cavity to reduce the space occupied in the spinal canal.

[0035] Furthermore, in the above technical solution, the support part 10 is an arc-shaped structure, and the two ends of the support part 10 are located between the vertebral plate and the lateral mass of the cervical vertebra, and its curvature is related to the distance and angle between the vertebral plate and the lateral mass during cervical laminoplasty.

[0036] Furthermore, in the above technical solution, the outer fixing part 30 includes a locking member 31 and a positioning fixing member 32. The locking member 31 and the positioning fixing member 32 are both connected to the support part 10 at an angle. The angle between the locking member 31 and the positioning fixing member 32 is engaged with the inner side of the lateral mass of the cervical vertebra, so as to be used for the support part 10 to fix the position of the vertebral plate of the cervical vertebra.

[0037] Furthermore, in the above technical solution, the angle between the locking member 31 and the positioning and fixing member 32 is greater than 90° and less than 180°.

[0038] Furthermore, in the above technical solution, two through holes are symmetrically provided on the positioning fixing member 32, and the through holes are used for fixing screws, and the screws are used for fixing the supporting part 10 on the lateral mass of the cervical vertebra of the patient.

[0039] Furthermore, in the above technical solution, the second extended fixing portion 22 is arranged to fit the bending angle between the cervical vertebral lamina and the spinous process, and a plurality of through holes are arranged at one end of the second extended fixing portion 22 away from the first fixing portion 21, wherein the distal through hole is used to fix the spinous process, and the through holes on both sides are used to fix the spinous process accessory ligament.

[0040] Furthermore, in the above technical solution, screw holes are provided at the upper and lower sides of the first fixing portion 21 and the second extended fixing portion 22 corresponding to the first fixing portion 21, and the screw holes are used to fix the inner fixing portion 20 on the vertebral plate of the patient's cervical spine by screw penetration.

[0041] Furthermore, in the above technical solution, the length of the second extended fixing portion 22 reaches the position of the patient's cervical spinous process, which is used to solve the fixation and reconstruction problems after the spinous process is cut during the improved cervical laminoplasty.

[0042] Furthermore, in the above technical solution, the top of the second extended fixing portion 22 is arranged in a cross shape, and a through hole is arranged in each direction, the distal through hole is used to fix the spinous process, and the through holes on both sides are used to fix the spinous process accessory ligament tissue.

[0043] When in use, first peel off the paraspinal muscles on one side of the patient's cervical spine to expose structures such as the spinous process, vertebral lamina and lateral mass, cut off the cervical spinous process, continue to peel off the paraspinal muscles on the other side, expose the vertebral lamina and the medial part of the lateral mass on the other side, use surgical instruments such as high-speed grinding drills, ultrasonic bone knives and vertebral lamina rongeurs to make grooves at the junction of the vertebral lamina and lateral mass on both sides, on the "door axis" side, remove the dorsal cortical bone and part of the cancellous bone, and retain the medial cortical bone, on the "door opening" side, remove the dorsal cortical bone, cancellous bone and ventral cortical bone, and then perform the "door opening" operation, embed one side of the support part 10 into the vertebral lamina medullary cavity on the door opening side, the outer fixing part 30 is at the lateral mass position of the cervical vertebra, and the inner fixing part 20 is respectively at the cervical lamina and spinous process position, and the inner fixing part 20, the outer fixing part 30 and the support part 10 are respectively fixed to the spinous process, lateral mass and lamina of the cervical vertebra to achieve cervical spinal canal expansion, fixation and spinous process reconstruction.

[0044] like Figure 3As shown, it is a second embodiment of a vertebral plate embedded cervical vertebra surgery fixation plate provided by the utility model, which is applied to traditional cervical vertebra surgery. In this embodiment, it includes a support portion 10, an inner fixing portion 20 and an outer fixing portion 30. The support portion 10 is arranged in the middle, and the inner fixing portion 20 and the outer fixing portion 30 are arranged on both sides of the support portion 10. The support portion 10, the inner fixing portion 20 and the outer fixing portion 30 are connected as a whole; the inner fixing portion 20 is U-shaped, wherein one side of the U-shape is fixedly connected to the support portion 10, and the other side extends to a side away from the support portion 10;

[0045] The inner fixing portion 20 includes a first fixing portion 21 and a second extended fixing portion 22. The first fixing portion 21 is one side of the U-shape connected to the supporting portion 10, and the second extended fixing portion 22 is the other side. The first fixing portion 21 is inserted into the medullary cavity of the cervical vertebrae for fixation, the second extended fixing portion 22 is fixedly connected to the cervical vertebrae, and the outer fixing portion 30 is fixedly connected to the lateral mass of the cervical vertebra.

[0046] The first fixing portion 21 and the second extending fixing portion 22 are arranged parallel to each other, and the distance between the two sides is less than the thickness of the cervical vertebral plate, so as to insert the first fixing portion 21 into the vertebral plate medullary cavity to reduce the space occupied in the spinal canal. The second extending fixing portion 22 is provided with two through holes at one end away from the first fixing portion 21.

[0047] The support part 10 is an arc-shaped structure, and the two ends of the support part 10 are located between the vertebral plate and the lateral mass of the cervical vertebra, and the curvature thereof is related to the distance and angle between the vertebral plate and the lateral mass during cervical laminoplasty.

[0048] The outer fixing part 30 includes a clamping member 31 and a positioning fixing member 32. The clamping member 31 and the positioning fixing member 32 are connected to the support part 10 at an angle. The angle between the clamping member 31 and the positioning fixing member 32 is engaged with the inner side of the lateral mass of the cervical vertebra, and is used for the support part 10 to fix the position of the vertebral plate of the cervical vertebra. The angle between the clamping member 31 and the positioning fixing member 32 is greater than 90° and less than 180°. Two through holes are symmetrically provided on the positioning fixing member 32, and the through holes are used for fixing screws, and the screws are used to fix the support part 10 on the lateral mass of the cervical vertebra of the patient.

[0049] When in use, the patient's posterior cervical paraspinal muscles are peeled off to expose structures such as the spinous process, bilateral vertebral laminae and lateral masses, and surgical instruments such as high-speed grinding drills, ultrasonic bone knives and vertebral laminae are used to make grooves at the junction of the bilateral vertebral laminae and lateral masses. On the "door axis" side, the dorsal cortical bone and part of the cancellous bone are removed, and the medial cortical bone is retained. On the "door opening" side, the dorsal cortical bone, cancellous bone and ventral cortical bone are removed, and then the "door opening" operation is performed, and one side of the support part 10 is embedded in the vertebral laminae medullary cavity on the door opening side, the outer fixing part 30 is located at the lateral mass of the cervical spine, and the inner fixing part 20 is located at the cervical vertebral laminae. The inner fixing part 20, the outer fixing part 30 and the support part 10 are fixed to the lateral mass and vertebral laminae of the cervical spine respectively to achieve the expansion, fixation and reconstruction of the cervical spinal canal.

[0050] Specifically, the principle of the utility model is as follows: when in use, the paraspinal muscles on one side of the patient's cervical spine are first peeled off to expose structures such as the spinous process, vertebral lamina and lateral mass, the cervical spinous process is cut off, and the paraspinal muscles on the other side are continued to be peeled off to expose the vertebral lamina and the inner part of the lateral mass on the other side. A high-speed grinding drill, ultrasonic bone knife and vertebral lamina rongeurs and other surgical instruments are used to make grooves at the junction of the vertebral lamina and lateral mass on both sides. On the "door axis" side, the dorsal cortical bone and part of the cancellous bone are removed, and the inner cortical bone is retained. On the "door opening" side, The dorsal cortical bone, cancellous bone and ventral cortical bone are removed, and then the "door opening" operation is performed, and one side of the support part 10 is embedded in the vertebral lamina medullary cavity on the door opening side. The outer fixing part 30 is located at the lateral mass of the cervical vertebra, and the inner fixing part 20 is located at the vertebral lamina and spinous process of the cervical vertebra respectively. The inner fixing part 20, the outer fixing part 30 and the support part 10 are fixed to the spinous process, lateral mass and vertebral lamina of the cervical vertebra respectively, so as to achieve the expansion and fixation of the cervical spinal canal and the reconstruction of the spinous process.

Claims

1. A vertebral plate embedded in cervical vertebra surgery fixation plate, characterized in that: The invention comprises a supporting portion (10), an inner fixing portion (20) and an outer fixing portion (30), wherein the supporting portion (10) is arranged in the middle, the inner fixing portion (20) and the outer fixing portion (30) are arranged on both sides of the supporting portion (10), and the supporting portion (10), the inner fixing portion (20) and the outer fixing portion (30) are integrally connected; The inner fixing portion (20) is U-shaped, wherein one side of the U-shape is fixedly connected to the supporting portion (10), and the other side extends to a side away from the supporting portion (10); The inner fixing part (20) comprises a first fixing part (21) and a second extended fixing part (22), wherein the first fixing part (21) is one side of the U-shape connected to the supporting part (10), and the second extended fixing part (22) is the other side, the first fixing part (21) is inserted into the vertebral lamina medullary cavity of the cervical vertebra for fixation, the second extended fixing part (22) is fixedly connected to the cervical vertebral lamina, the cervical spinous process and the accessory ligament, and the outer fixing part (30) is fixedly connected to the lateral mass of the cervical vertebra.

2. The lamina-embedded cervical vertebra surgery fixation plate according to claim 1, characterized in that: The first fixing part (21) and the second extended fixing part (22) are arranged in parallel on both sides, and the distance between the two sides is less than the thickness of the cervical vertebral plate, so as to insert the first fixing part (21) into the medullary cavity inside the vertebral plate to reduce the space occupied in the spinal canal.

3. The lamina-embedded cervical vertebra surgery fixation plate according to claim 2, characterized in that: The support part (10) is an arc-shaped structure, and the two ends of the support part (10) are located between the vertebral plate of the cervical vertebra and the lateral mass of the cervical vertebra, and the curvature of the support part (10) is related to the distance and angle between the vertebral plate and the lateral mass during cervical laminoplasty.

4. The lamina-embedded cervical vertebra surgery fixation plate according to claim 3, characterized in that: The outer fixing portion (30) comprises a clamping piece (31) and a positioning fixing piece (32), the clamping piece (31) and the positioning fixing piece (32) are both connected to the support portion (10) at an angle, and the angle between the clamping piece (31) and the positioning fixing piece (32) is engaged with the inner side of the lateral mass of the cervical vertebra, so as to support the support portion (10) to fix the position of the vertebral plate of the cervical vertebra.

5. The lamina-embedded cervical vertebra surgery fixation plate according to claim 4, characterized in that: The angle between the locking member (31) and the positioning and fixing member (32) is greater than 90° and less than 180°.

6. The lamina-embedded cervical vertebra surgery fixation plate according to claim 5, characterized in that: The positioning fixing member (32) is symmetrically provided with two through holes, the through holes being used for fixing screws, and the screws being used for fixing the support portion (10) on the lateral mass of the patient's cervical spine.

7. The lamina-embedded cervical vertebra surgery fixation plate according to claim 6, characterized in that: The second extended fixing portion (22) is arranged to fit the bending angle between the cervical vertebral lamina and the spinous process, and a plurality of through holes are arranged at one end of the second extended fixing portion (22) away from the first fixing portion (21), wherein the distal through hole is used for fixing the spinous process, and the through holes on both sides are used for fixing the spinous process accessory ligament.

8. The lamina-embedded cervical vertebra surgery fixation plate according to claim 7, characterized in that: The first fixing portion (21) and the second extended fixing portion (22) are provided with screw holes at upper and lower positions corresponding to the first fixing portion (21), and the screw holes are used to fix the inner fixing portion (20) to the vertebral plate of the patient's cervical spine through the penetration of the screws.

9. The lamina-embedded cervical vertebra surgery fixation plate according to claim 8, characterized in that: The length of the second extended fixing portion (22) reaches the position of the patient's cervical spinous process, and is used to solve the fixation problem after the spinous process is cut during the improved cervical laminoplasty.

10. The lamina-embedded cervical vertebra surgery fixation plate according to claim 9, characterized in that: The top of the second extended fixing portion (22) is arranged in a cross shape, and a through hole is arranged in each direction, the distal through hole is used to fix the spinous process, and the through holes on both sides are used to fix the spinous process accessory ligament tissue.

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