Interbody fusion cage for spinal surgery

Abstract

The invention is applicable to the technical field of medical instruments, and provides an interbody fusion cage for spinal surgery, the interbody fusion cage comprises an upper fusion block and a lower fusion block, the lower fusion block is hinged to the upper fusion block, one side of the upper fusion block is fixedly provided with a hinge block, the lower fusion block is fixedly provided with a fixing block, and the hinge block is hinged to the lower fusion block. The hinge block is hinged to the fixed block; the upper connecting block and the lower connecting block are hinged to the upper fusion block and the lower fusion block respectively; the adjusting mechanism is arranged on the upper connecting block and the lower connecting block and used for adjusting the distance between the upper fusion block and the lower fusion block. According to the interbody fusion cage for the spinal surgery, accurate control over the fusion cage can be achieved, individual requirements of different patients are met, the slippage or looseness phenomenon in the surgery process is effectively prevented, and the stability and durability of interbody fusion are ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of medical appliances, and in particular relates to an intervertebral fusion device for spinal surgery. Background Art

[0002] Spinal surgery is a common surgical procedure used to treat various spinal diseases and injuries. This surgery involves multiple parts of the cervical spine, thoracic spine, lumbar spine, etc., and aims to restore the normal function of the spine, relieve pain, and improve the quality of life. The intervertebral fusion device used in spinal surgery is an implantable medical device, mainly used in spinal intervertebral fusion surgery. It is implanted between adjacent vertebrae to provide stable support and promote bony fusion, thereby restoring the stability and function of the spine.

[0003] However, in the prior art, intervertebral fusion devices are mostly one-piece structures. In intervertebral fusion surgery, intervertebral fusion devices of different specifications need to be matched for implantation. If the height of the intervertebral fusion device does not match or the upper and lower vertebrae are further diseased, the intervertebral fusion device interface of the normally fused vertebrae needs to be peeled off, causing unnecessary wear on the healthy vertebrae. The operation is risky, difficult and time-consuming. Summary of the invention

[0004] The present invention provides an intervertebral fusion device for spinal surgery, aiming to solve the problem in the above-mentioned background technology that most of the existing intervertebral fusion devices are of an integrated structure and cannot be adjusted according to actual conditions.

[0005] To solve the above problems, the present invention is implemented as follows: an intervertebral fusion device for spinal surgery comprises: an upper fusion block and a lower fusion block, the lower fusion block is hingedly mounted on the upper fusion block, a hinge block is fixedly mounted on one side of the upper fusion block, a fixed block is fixedly mounted on the lower fusion block, and the hinge block is hinged to the fixed block; an upper connecting block and a lower connecting block, the upper connecting block and the lower connecting block are hingedly mounted on the upper fusion block and the lower fusion block respectively; an adjustment mechanism, the adjustment mechanism is arranged on the upper connecting block and the lower connecting block and is used to adjust the distance between the upper fusion block and the lower fusion block.

[0006] Preferably, the adjustment mechanism comprises a fixed column and a sliding column, the fixed column is fixedly mounted on the lower connecting block, the sliding column is slidably mounted on the fixed column, and the sliding column is fixed to the upper connecting block.

[0007] Preferably, a plurality of plug plates are fixedly mounted on the fixing column, and fixing bolts are threadedly mounted on the plurality of plug plates.

[0008] Preferably, a plurality of threaded holes are formed on the sliding column, and the plurality of threaded holes are respectively threadedly connected to the plurality of fixing bolts.

[0009] Preferably, both the upper fusion block and the lower fusion block are provided with engaging grooves, engaging blocks are fixedly installed in both the engaging grooves, and both the engaging blocks are provided with a plurality of teeth.

[0010] Preferably, the upper fusion block and the lower fusion block are both provided with a plurality of side holes for facilitating bone graft fusion.

[0011] Preferably, a push groove is provided on one side of the fixing column, and the push groove is used to facilitate implantation of the fusion device.

[0012] Compared with the related art, the intervertebral fusion device for spinal surgery provided by the present invention has the following beneficial effects: Compared with the existing technology, the intervertebral fusion device for spinal surgery provided by this solution has overall achieved the purpose of improving the accuracy of surgical operations, enhancing the stability of implantation, promoting the bone graft fusion process, and simplifying the surgical operation process. It improves the accuracy during the operation, ensures that the intervertebral fusion device can be accurately implanted and fixed in a predetermined position, and effectively prevents slippage or loosening during the operation, ensuring the stability and durability of intervertebral fusion, improving the success rate of the operation, reducing the risk of surgery, accelerating the patient's recovery, and providing patients with better treatment effects and quality of life. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the main cross-sectional structure of an intervertebral fusion device for spinal surgery provided by the present invention; Figure 2 It is a side view structural schematic diagram of an intervertebral fusion device for spinal surgery provided by the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the fixed column in the present invention; Figure 4 for Figure 1 Schematic diagram of the enlarged structure of part A shown in FIG.

[0014] Figure numerals: 1. upper fusion block; 2. lower fusion block; 3. hinge block; 4. fixed block; 5. upper connecting block; 6. lower connecting block; 7. fixed column; 8. sliding column; 9. plug plate; 10. fixing bolt; 11. threaded hole; 12. fitting groove; 13. fitting block; 14. teeth; 15. side hole; 16. push groove. DETAILED DESCRIPTION

[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" in the specification and claims of the present application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present application or the above-mentioned figures are used to distinguish different objects, rather than to describe a specific order; the terms "inside", "outside", "left", and "right" indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0016] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0017] The embodiment of the present invention provides an intervertebral fusion device for spinal surgery, such as Figure 1-4 As shown, the intervertebral fusion device for spinal surgery includes: an upper fusion block 1 and a lower fusion block 2, the lower fusion block 2 is hingedly mounted on the upper fusion block 1, a hinge block 3 is fixedly mounted on one side of the upper fusion block 1, a fixed block 4 is fixedly mounted on the lower fusion block 2, and the hinge block 3 is hinged to the fixed block 4; an upper connecting block 5 and a lower connecting block 6, the upper connecting block 5 and the lower connecting block 6 are hingedly mounted on the upper fusion block 1 and the lower fusion block 2 respectively; an adjustment mechanism, the adjustment mechanism is arranged on the upper connecting block 5 and the lower connecting block 6 for adjusting the distance between the upper fusion block 1 and the lower fusion block 2.

[0018] In this embodiment, the upper fusion block 1 and the lower fusion block 2 are connected by an articulation, so that the angle and distance between the two can be adjusted within a certain range, allowing the doctor to adjust the position and shape of the fusion device in real time according to the patient's spinal structure and pathological conditions during the operation, thereby improving the flexibility and accuracy of the operation and helping to achieve a more ideal intervertebral fusion effect. The articulation block 3 is fixedly mounted on the upper fusion block 1, while the fixing block 4 is fixed on the lower fusion block 2. The two cooperate with each other to form a hinge point, so that the upper fusion block 1 and the lower fusion block 2 can be relatively rotated and adjusted, ensuring a stable connection between the upper fusion block 1 and the lower fusion block 2, while providing the necessary degree of freedom for fine adjustment. The upper connection block 5 and The lower connecting blocks 6 are hingedly mounted on the upper fusion block 1 and the lower fusion block 2, respectively. They serve as the connection points of the adjustment mechanism and are used to transmit and adjust the force. The force of the adjustment mechanism can be effectively transmitted to the upper fusion block 1 and the lower fusion block 2 through the two connecting blocks, thereby achieving precise control of the distance between the two. The adjustment mechanism is arranged on the upper connecting block 5 and the lower connecting block 6. By operating the mechanism, the distance between the upper fusion block 1 and the lower fusion block 2 can be conveniently adjusted, which significantly improves the adaptability and operability of the intervertebral fusion device, allowing doctors to perform personalized adjustments according to the spinal conditions of different patients, thereby optimizing the surgical effect. At the same time, the existence of the adjustment mechanism also reduces the difficulty and risk of the operation and improves the success rate of the operation.

[0019] In a further preferred embodiment of the present invention, the adjustment mechanism includes a fixed column 7 and a sliding column 8, the fixed column 7 is fixedly mounted on the lower connecting block 6, the sliding column 8 is slidably mounted on the fixed column 7, and the sliding column 8 is fixed to the upper connecting block 5.

[0020] In this embodiment, the fixed column 7 is fixedly mounted on the lower connecting block 6. The fixed column 7 serves as a supporting and guiding body to ensure that the sliding column 8 can stably slide along its axial direction. The sliding column 8 is slidably mounted on the fixed column 7. The cooperation between the sliding column 8 and the fixed column 7 allows the sliding column 8 to slide along the axial direction of the fixed column 7 when subjected to external force, thereby changing its position on the fixed column 7. During the operation, the doctor can change the distance between the upper fusion block 1 and the lower fusion block 2 by operating the adjustment mechanism according to the patient's spinal condition and surgical needs. The sliding of the sliding column 8 on the fixed column 7 can achieve precise control of the distance between the upper fusion block 1 and the lower fusion block 2 to meet the personalized needs of different patients, allowing the doctor to make adjustments conveniently and quickly during the operation, reducing the difficulty and time cost of the operation.

[0021] In a further preferred embodiment of the present invention, a plurality of inserting plates 9 are fixedly mounted on the fixing column 7 , and fixing bolts 10 are threadedly mounted on the plurality of inserting plates 9 .

[0022] In this embodiment, a plurality of plug plates 9 are fixedly mounted on the fixing column 7. These plug plates 9 are spaced apart along the length direction of the fixing column 7, providing an installation basis for the fixing bolts 10. A fixing bolt 10 is threadedly mounted on each plug plate 9. The fixing bolt 10 can be tightened or loosened by rotation, thereby locking or releasing the position of the sliding column 8. During the operation, after the doctor adjusts the distance between the upper fusion block 1 and the lower fusion block 2 through the sliding column 8, the fixing bolt 10 can be tightened on the corresponding plug plate 9 by rotating it. In this way, the fixing bolt 10 will generate an inward pressing force on the sliding column 8 to prevent it from accidentally sliding during the operation, thereby ensuring the stability of the intervertebral fusion device. When the distance needs to be adjusted again, the doctor only needs to loosen the fixing bolt 10 to allow the sliding column 8 to slide freely on the fixing column 7. After the adjustment is completed, the fixing bolt 10 is tightened again to lock the new position, so that the sliding column 8 can be effectively locked at the adjusted position, avoiding the problem of intervertebral fusion device position deviation caused by sliding of the sliding column 8 during the operation, thereby enhancing the stability and safety of the operation.

[0023] In a further preferred embodiment of the present invention, a plurality of threaded holes 11 are formed on the sliding column 8 , and the plurality of threaded holes 11 are respectively threadedly connected to the plurality of fixing bolts 10 .

[0024] In this embodiment, a plurality of threaded holes 11 are provided on the sliding column 8. These threaded holes 11 are distributed along the length direction of the sliding column 8 and correspond to the insert plate 9 and the fixing bolts 10 on the fixing column 7. Since the threaded holes 11 are directly provided on the sliding column 8 and connected to the fixing bolts 10, the doctor can achieve more precise adjustments as needed.

[0025] In a further preferred embodiment of the present invention, both the upper fusion block 1 and the lower fusion block 2 are provided with an embedding groove 12, and embedding blocks 13 are fixedly installed in both embedding grooves 12, and both embedding blocks 13 are provided with a plurality of teeth 14.

[0026] In this embodiment, the interlocking grooves 12 are respectively arranged on the upper fusion block 1 and the lower fusion block 2. The interlocking grooves 12 serve as spaces for accommodating the interlocking blocks 13. The interlocking blocks 13 are fixedly installed in the interlocking grooves 12. The teeth 14 are arranged on the interlocking blocks 13 to form a structure with multiple protrusions or grooves. The design of the teeth 14 enables the fusion device to form a closer contact with the upper and lower vertebral bodies after being implanted in the intervertebral space, thereby increasing the initial stability of the fusion device. The presence of the teeth 14 increases the contact area between the fusion device and the vertebral body, which helps to provide more bone contact points, thereby accelerating the bone fusion process. The teeth 14 also have a certain guiding effect, which can guide the bone tissue to grow around the fusion device, further promoting the success of bone fusion.

[0027] In a further preferred embodiment of the present invention, the upper fusion block 1 and the lower fusion block 2 are both provided with a plurality of side holes 15 for facilitating bone graft fusion.

[0028] In this embodiment, a plurality of side holes 15 are provided on both the upper fusion block 1 and the lower fusion block 2. These side holes 15 serve as channels for bone tissue growth and fusion, and help promote the combination of bone graft materials and the patient's own bone tissue. During the operation, after the intervertebral fusion cage is implanted in the corresponding position of the spine, the doctor will fill the bone graft material inside or around the fusion cage. At this time, the side holes 15 will play an important role. They provide a channel for the bone graft material to contact the surrounding bone tissue, so that the bone graft material can be more easily integrated with the patient's bone tissue. Over time, the bone graft material will gradually be replaced by new bone tissue, thereby achieving stable intervertebral fusion. The design of the side holes 15 increases the contact area between the bone graft material and the surrounding bone tissue, thereby accelerating the growth and fusion process of the bone tissue. This helps to shorten the patient's recovery time and improve the surgical effect.

[0029] In a further preferred embodiment of the present invention, a push groove 16 is provided on one side of the fixing column 7, and the push groove 16 is used to facilitate implantation of the fusion device.

[0030] In this embodiment, a push groove 16 is provided on one side of the fixing column 7. The push groove 16 serves as an auxiliary structure to provide additional operating space so that the doctor can implant the fusion device to a designated position during the operation. During the operation, the doctor needs to accurately implant the intervertebral fusion device into the intervertebral space of the spine. The doctor can use the push groove 16 as a fulcrum of a handle or an operating lever to smoothly push the fusion device into the intervertebral space by applying appropriate force and direction control, which not only improves the accuracy of implantation, but also reduces the difficulty and time cost of the operation, and helps to improve the success rate of the operation and the patient's rehabilitation effect.

[0031] To sum up, compared with related technologies, the present device has achieved the purpose of improving the accuracy of surgical operations, enhancing the stability of implants, promoting the process of bone graft fusion, and simplifying the surgical operation process as a whole, improving the accuracy during the operation, ensuring that the intervertebral fusion device can be accurately implanted and fixed in the predetermined position, and effectively preventing slippage or loosening during the operation, ensuring the stability and durability of intervertebral fusion, improving the success rate of the operation, reducing surgical risks, accelerating the patient's recovery, and providing patients with better treatment effects and quality of life.

[0032] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. An intervertebral fusion device for spinal surgery, characterized in that: include: An upper fusion block and a lower fusion block, wherein the lower fusion block is hingedly mounted on the upper fusion block, a hinged block is fixedly mounted on one side of the upper fusion block, a fixed block is fixedly mounted on the lower fusion block, and the hinged block is hingedly connected to the fixed block; An upper connecting block and a lower connecting block, wherein the upper connecting block and the lower connecting block are hingedly mounted on the upper fusion block and the lower fusion block respectively; An adjustment mechanism is provided on the upper connecting block and the lower connecting block and is used for adjusting the distance between the upper fusion block and the lower fusion block.

2. The intervertebral fusion cage for spinal surgery according to claim 1, characterized in that: The adjustment mechanism comprises a fixed column and a sliding column, wherein the fixed column is fixedly mounted on the lower connecting block, the sliding column is slidably mounted on the fixed column, and the sliding column is fixed to the upper connecting block.

3. The intervertebral fusion cage for spinal surgery according to claim 2, characterized in that: A plurality of plug plates are fixedly mounted on the fixing column, and fixing bolts are threadedly mounted on the plurality of plug plates.

4. The intervertebral fusion cage for spinal surgery according to claim 2, characterized in that: The sliding column is provided with a plurality of threaded holes, and the plurality of threaded holes are respectively threadedly connected with the plurality of fixing bolts.

5. The intervertebral fusion cage for spinal surgery according to claim 1, characterized in that: The upper fusion block and the lower fusion block are both provided with engaging grooves, engaging blocks are fixedly installed in the two engaging grooves, and a plurality of teeth are provided on the two engaging blocks.

6. The intervertebral fusion cage for spinal surgery according to claim 1, characterized in that: The upper fusion block and the lower fusion block are both provided with a plurality of side holes for facilitating bone graft fusion.

7. The intervertebral fusion cage for spinal surgery according to claim 2, characterized in that: A push groove is provided on one side of the fixing column, and the push groove is used to facilitate implantation of the fusion device.

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