Interbody fusion cage

Abstract

The utility model relates to the related technical field of interbody fusion, in particular to an interbody fusion cage which comprises a first transverse base body, and vertical adjusting mechanisms are arranged on the surface of the first transverse base body and the surface of a first vertical base body. When the interbody fusion cage is vertically adjusted, force is applied to a first vertical base body, a first clamping plate slides in a first clamping groove of a first transverse base body, a wedge-shaped body is extruded, a limiting plate compresses a telescopic spring and retracts in a telescopic hole, an auxiliary rod and a limiting block slide and guide in a telescopic groove and a limiting groove, and after the auxiliary rod and the limiting block move to a proper vertical position, the spring ejects out of the limiting plate; when the wedge-shaped body is clamped into the wedge-shaped groove for positioning and completing vertical size adjustment and transverse adjustment, the nut is rotated to drive the threaded rod to rotate, the threaded rod is in threaded connection with the supporting rod and axially moves along the supporting rod, and the second clamping plate stably and transversely slides in the second clamping groove along with movement of the threaded rod, so that the second transverse base body moves relative to the first transverse base body, and the transverse size is changed; in this way, multi-dimensional adjustment is achieved, and the fusion cage is made to be attached to the intervertebral space.

Description

TECHNICAL FIELD

[0001] The utility model relates to the intervertebral fusion technical field especially intervertebral fusion cage. BACKGROUND

[0002] Intervertebral fusion is a kind of spine surgery technique, mainly used for treating spinal diseases, and intervertebral fusion is to remove the intervertebral disc between two or more adjacent vertebrae by surgical means, and then implant bone grafting material or use intervertebral fusion cage in the intervertebral space, and these implants can promote the fusion between adjacent vertebrae. Its basic principle is to use the bone induction, bone conduction and osteogenesis characteristics of bone grafting material to create an environment conducive to bone growth in the intervertebral space. Autologous bone grafting contains osteoblasts and bone matrix, which can guide new bone growth in the intervertebral space, and ultimately fuse adjacent vertebrae into a whole. When the spine is diseased, such as vertebral fracture, spondylolisthesis and severe intervertebral disc degeneration, the stability of the spine will be affected. Intervertebral fusion can increase the stability of the diseased segment of the spine. For example, in the case of lumbar spondylolisthesis, intervertebral fusion can prevent further displacement of the vertebral body, reduce the compression and damage risk of the spinal cord and nerve root, and provide long-term stable support for the spine. Therefore, there is an urgent need for an intervertebral fusion cage.

[0003] However, the existing intervertebral fusion cage has many drawbacks due to the inability to adjust the size during use. Different patients have individual differences in spinal anatomy, including the height and width of the intervertebral space and the morphological characteristics of the vertebral body. When the size of the fusion cage is fixed, it may not be able to achieve a tight and stable fit for patients with a larger intervertebral space, which can lead to postoperative loosening and displacement of the fusion cage. This not only affects the effectiveness of intervertebral fusion and leads to fusion failure, but also can cause compression or irritation to important tissues such as nerves and blood vessels, leading to pain, numbness, weakness and even more serious neurological dysfunction. For patients with a smaller intervertebral space, forcibly implanting a fixed-size fusion cage can over-expand the intervertebral space, disrupting the original biomechanical balance of the spine, causing adjacent vertebrae and intervertebral discs to bear abnormal stress, accelerating the degeneration of adjacent segments, and increasing the risk of long-term adjacent segment disease, such as adjacent vertebral hyperplasia and recurrent disc herniation, which can seriously affect the patient's quality of life and long-term health of the spine. SUMMARY

[0004] The utility model discloses a purpose lies in providing a kind of intervertebral fusion cage to solve the intervertebral fusion cage of the prior art proposed in the above background art, but the intervertebral fusion cage of prior art has many drawbacks in the process of use due to inability to adjust size, and the anatomical structure of different patients'spinal column exists individual difference, including the height of intervertebral space, width and the morphological characteristics of vertebral body etc., when the size of fusion cage is fixed, for the patient with larger intervertebral space, it can not be realized that closely, firmly adhere, and it is easy to appear fusion cage loosening, shift etc.

[0005] To achieve the above object, the utility model provides the following technical scheme: an intervertebral fusion cage, including first transverse matrix, one side of the first transverse matrix is connected with second transverse matrix slidingly, one side of the second transverse matrix is connected with first vertical matrix slidingly, one side of the first vertical matrix is connected with second vertical matrix slidingly, the surface of first vertical matrix and second vertical matrix is fixedly connected with fixed plate, the inside of fixed plate is penetrated with screw, the surface of first transverse matrix and first vertical matrix is provided with vertical adjusting mechanism, the surface of first transverse matrix and second transverse matrix is provided with transverse adjusting mechanism;

[0006] The vertical adjusting mechanism includes first clamping groove, first clamping plate, fixed rod, telescopic slot, limiting slot, auxiliary rod, limiting block, telescopic hole, telescopic spring, limiting plate, wedge body and wedge slot, the inside of first transverse matrix is set with first clamping groove, one side of the first vertical matrix is fixedly connected with first clamping plate, the inside of first clamping groove is fixedly connected with fixed rod, the inside of fixed rod is set with telescopic slot, the inside of telescopic slot is set with limiting slot, the inner wall of telescopic slot is connected with auxiliary rod slidingly, the bottom of auxiliary rod is fixedly connected with limiting block in both ends, the inside of first clamping plate is set with telescopic hole, one end in the inside of telescopic hole is fixedly connected with telescopic spring, one end of telescopic spring is fixedly connected with limiting plate, the outside of limiting plate is fixedly connected with wedge body, the inside of first clamping groove is set with wedge slot.

[0007] Preferably, the first transverse base and the second transverse base are connected to each other in a sliding manner, the second transverse base and the first vertical base are connected to each other in a sliding manner, the first vertical base and the second vertical base are connected to each other in a sliding manner, and the second vertical base and the first transverse base are connected to each other in a sliding manner.

[0008] Preferably, the fixing plates are arranged on the surfaces of the first vertical base and the second vertical base, and the screws are uniformly distributed on the surfaces of each group of fixing plates.

[0009] Preferably, the first clamping groove is located at a position corresponding to the position of the first clamping plate, and the outer wall size of the first clamping plate is consistent with the inner wall size of the first clamping groove.

[0010] Preferably, the outer wall size of the wedge-shaped body is consistent with the inner wall size of the wedge-shaped groove, and a plurality of groups of wedge-shaped grooves are arranged at equal intervals on the inner side of the first clamping groove.

[0011] Preferably, the transverse adjusting mechanism comprises a second clamping groove, a second clamping plate, a supporting rod, a threaded rod, and a nut. The inner side of the second transverse base is provided with the second clamping groove. The inner end of the first transverse base is fixedly connected with the second clamping plate. The inner side of the first transverse base is fixedly connected with the supporting rod. The inside of the supporting rod is threadedly connected with the threaded rod. One end of the threaded rod is fixedly connected with the nut.

[0012] Preferably, the second clamping plate is located at a position corresponding to the position of the second clamping groove, and the outer wall size of the second clamping plate is consistent with the inner wall size of the second clamping groove.

[0013] Compared with the prior art, the intervertebral fusion cage has the advantages that when vertical adjustment of the intervertebral fusion cage is needed, first, upward or downward force is applied to the first vertical base body, the first clamping plate on one side of the first vertical base body slides in the first clamping slot of the first horizontal base body, at this time, the wedge-shaped body is extruded by the inner wall of the first clamping slot, the limiting plate is retracted into the telescopic hole and the telescopic spring is compressed when the wedge-shaped body is extruded, so that the wedge-shaped body can move smoothly in the first clamping slot, the auxiliary rod slides in the telescopic slot, the limiting block at the bottom of the auxiliary rod moves in the limiting slot, and the auxiliary rod plays a role in stabilizing and guiding, so that the first clamping plate can only move along the predetermined vertical direction, when the first vertical base body is moved to a suitable vertical position, the telescopic spring releases the elastic force, the limiting plate is pushed outwards, and the wedge-shaped body is clamped into the corresponding wedge-shaped slot, so that the positioning of the first vertical base body is realized, the size adjustment of the intervertebral fusion cage in the vertical direction is completed, the requirements of different intervertebral space heights are met, the intervertebral fusion cage can be closely fitted to the intervertebral space after implantation, and good basic conditions are provided for spinal fusion, when horizontal adjustment of the intervertebral fusion cage is needed, the nut is rotated, the rotation of the nut drives the threaded rod fixedly connected with the nut to rotate, the threaded rod is axially moved along the support rod in the process of rotation of the threaded rod, the second clamping slot in the inner side of the second horizontal base body cooperates with the second clamping plate of the first horizontal base body, the second clamping plate slides in the second clamping slot when the threaded rod moves, the movement direction of the second horizontal base body is guided and limited, so that the second horizontal base body can only stably slide along the horizontal direction, so that the horizontal position adjustment of the second horizontal base body relative to the first horizontal base body is realized, and the horizontal size of the entire intervertebral fusion cage is changed, the horizontal width requirements of different intervertebral spaces are met, the intervertebral fusion cage can be closely fitted to the intervertebral space after implantation, good basic conditions are provided for spinal fusion, and the effect and success rate of surgery are improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is an appearance side view structure schematic diagram of the utility model;

[0015] Figure 2 It is an appearance rear view structure schematic diagram of the utility model;

[0016] Figure 3 It is a vertical adjustment mechanism structure schematic diagram of the utility model;

[0017] Figure 4 It is a horizontal adjustment mechanism structure schematic diagram of the utility model;

[0018] Figure 5 It is the utility model Figure 3 It is an enlarged structure schematic diagram of A in the utility model;

[0019] Figure 6 The utility model discloses Figure 3 Amplification structural schematic diagram of middle B place.

[0020] In the drawing: 1, first horizontal base body;2, second horizontal base body;3, first vertical base body;4, second vertical base body;5, fixed plate;6, screw;7, vertical adjusting mechanism;701, first clamping groove;702, first clamping plate;703, fixed rod;704, telescopic groove;705, limiting groove;706, auxiliary rod;707, limiting block;708, telescopic hole;709, telescopic spring;710, limiting plate;711, wedge-shaped body;712, wedge-shaped groove;8, horizontal adjusting mechanism;801, second clamping groove;802, second clamping plate;803, support rod;804, threaded rod;805, nut. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be apparently and completely described in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts are within the protection scope of the utility model.

[0022] Please refer to Figures 1-6 The utility model provides a kind of intervertebral fusion cage, including first horizontal base body 1, the one side of first horizontal base body 1 is slidably connected with second horizontal base body 2, the one side of second horizontal base body 2 is slidably connected with first vertical base body 3, the one side of first vertical base body 3 is slidably connected with second vertical base body 4, the surface of first vertical base body 3 and second vertical base body 4 is all fixedly connected with fixed plate 5, the inside of fixed plate 5 is penetrated with screw 6, the surface of first horizontal base body 1 and first vertical base body 3 is provided with vertical adjusting mechanism 7, the surface of first horizontal base body 1 and second horizontal base body 2 is provided with horizontal adjusting mechanism 8;

[0023] The vertical adjusting mechanism 7 comprises a first clamping groove 701, a first clamping plate 702, a fixed rod 703, an expansion groove 704, a limiting groove 705, an auxiliary rod 706, a limiting block 707, an expansion hole 708, an expansion spring 709, a limiting plate 710, a wedge-shaped body 711 and a wedge-shaped groove 712. The inner side of the first horizontal base body 1 is provided with the first clamping groove 701. One side of the first vertical base body 3 is fixedly connected with the first clamping plate 702. The inner part of the first clamping groove 701 is fixedly connected with the fixed rod 703. The inner side of the expansion groove 704 is provided with the limiting groove 705. The inner wall of the expansion groove 704 is slidably connected with the auxiliary rod 706. The bottom of the auxiliary rod 706 is fixedly connected with the limiting block 707. The inner part of the first clamping plate 702 is provided with the expansion hole 708. One end of the inner part of the expansion hole 708 is fixedly connected with the expansion spring 709. One end of the expansion spring 709 is fixedly connected with the limiting plate 710. The outer side of the limiting plate 710 is fixedly connected with the wedge-shaped body 711. The inner side of the first clamping groove 701 is provided with the wedge-shaped groove 712. Through the arrangement of the vertical adjusting mechanism 7, when the intervertebral fusion cage needs to be vertically adjusted, first, upward or downward force is applied to the first vertical base body 3. The first clamping plate 702 on one side of the first vertical base body 3 slides in the first clamping groove 701 of the first horizontal base body 1. At this time, the wedge-shaped body 711 is extruded by the inner wall of the first clamping groove 701. Since the limiting plate 710 is connected with the expansion spring 709, when the wedge-shaped body 711 is extruded, the limiting plate 710 will shrink into the expansion hole 708, compressing the expansion spring 709, so that the wedge-shaped body 711 can move smoothly in the first clamping groove 701. At the same time, the auxiliary rod 706 slides in the expansion groove 704, and the limiting block 707 at the bottom of the auxiliary rod 706 moves in the limiting groove 705, playing a role of stable guiding, ensuring that the first clamping plate 702 can only move along the predetermined vertical direction. When the first vertical base body 3 moves to the appropriate vertical position, the expansion spring 709 releases the elastic force, pushes the limiting plate 710 outward, and drives the wedge-shaped body 711 to be clamped into the corresponding wedge-shaped groove 712, thereby realizing the positioning of the first vertical base body 3 and completing the size adjustment of the intervertebral fusion cage in the vertical direction, so as to adapt to the needs of different intervertebral space heights and ensure that the fusion cage can closely fit the intervertebral space after implantation, providing good basic conditions for spinal fusion.

[0024] Further, the first transverse base 1 and the second transverse base 2 are connected to each other in sliding mode, the second transverse base 2 and the first vertical base 3 are connected to each other in sliding mode, the first vertical base 3 and the second vertical base 4 are connected to each other in sliding mode, and the second vertical base 4 and the first transverse base 1 are connected to each other in sliding mode. Through the arrangement of the first transverse base 1, the second transverse base 2, the first vertical base 3 and the second vertical base 4, the intervertebral fusion cage can realize multi-dimensional size adjustment. When facing the complex shape and size difference of the intervertebral space of different patients, the lateral and vertical sizes of the fusion cage can be flexibly adjusted. For the case that the intervertebral space is wider laterally and higher vertically, the lateral and vertical spans of the fusion cage can be accurately expanded through the sliding cooperation of each base, so as to ensure that the fusion cage is closely matched with the intervertebral space, improve the stability after implantation, promote the smooth progress of the intervertebral fusion process, reduce the risk of fusion failure and displacement caused by the mismatch between the fusion cage and the intervertebral space, and thus improve the treatment effect and prognosis quality of the spinal surgery.

[0025] Further, the fixed plate 5 is provided on the surface of the first vertical base 3 and the second vertical base 4, and the screws 6 are uniformly distributed on the surface of each fixed plate 5. Through the arrangement of the fixed plate 5 and the screw 6, the fixation ability of the fusion cage after being implanted into the intervertebral space is greatly enhanced. After the fusion cage is placed in the surgery, the fixed plate 5 is firmly connected with the adjacent vertebral body by tightening the screw 6. Multiple fixed plates 5 apply fixing force from different positions, which can uniformly disperse stress and prevent the fusion cage from rotating or displacing between the vertebral bodies. This stable fixation method helps to maintain the normal anatomical structure and mechanical balance of the spine, creates a stable local environment for intervertebral fusion, accelerates the growth and fusion of bone tissue in and around the fusion cage, reduces the adverse effects on important tissues such as nerves and blood vessels, reduces the incidence of surgical complications, and is beneficial to the rehabilitation of patients after surgery and the recovery of spinal function.

[0026] Further, the position of the first clamping groove 701 corresponds to the position of the first clamping plate 702, and the outer wall size of the first clamping plate 702 matches the inner wall size of the first clamping groove 701. Through the arrangement of the first clamping groove 701 and the first clamping plate 702, when the first vertical base 3 moves vertically, the first clamping plate 702 slides in the first clamping groove 701. Its close cooperation limits the other degrees of freedom of the first vertical base 3 except the vertical direction, so that the vertical movement is more stable and accurate. This can avoid shaking and deviation during adjustment, ensure that the fusion cage can move according to the predetermined direction and distance during vertical adjustment, ensure the accuracy of vertical size adjustment, make the fusion cage better adapt to the height requirements of different intervertebral spaces, improve the versatility and reliability of the fusion cage, and provide a strong guarantee for precise implantation of the fusion cage in spinal surgery.

[0027] Further, the outer wall size of the wedge-shaped body 711 matches the inner wall size of the wedge-shaped groove 712, and the wedge-shaped groove 712 is arranged in multiple groups at equal intervals on the inner side of the first clamping groove 701. Through the arrangement of the wedge-shaped body 711 and the wedge-shaped groove 712, the vertical position of the first vertical base body 3 is conveniently and stably locked. After vertical adjustment is in place, the telescopic spring 709 pushes the wedge-shaped body 711 to be clamped into the corresponding wedge-shaped groove 712. Due to the close size matching, the displacement of the first vertical base body 3 due to external force or spinal movement can be effectively prevented. Multiple groups of wedge-shaped grooves 712 provide multiple optional locking positions, which can be accurately locked according to different intervertebral space height requirements, meeting the individualized operation requirements. This locking mechanism not only ensures the stability of the cage during use, but also to some extent reduces the risk of component wear and loosening caused by long-term use, prolongs the service life of the cage, and improves the long-term effect and safety of the spinal fusion operation.

[0028] Further, the transverse adjustment mechanism 8 includes a second clamping groove 801, a second clamping plate 802, a support rod 803, a threaded rod 804, and a nut 805. The inner side of the second transverse base body 2 is provided with the second clamping groove 801, and the inner end of the first transverse base body 1 is fixedly connected with the second clamping plate 802. The inner side of the first transverse base body 1 is fixedly connected with the support rod 803, and the support rod 803 is internally threadedly connected with the threaded rod 804. One end of the threaded rod 804 is fixedly connected with the nut 805. Through the arrangement of the transverse adjustment mechanism 8, when the intervertebral cage needs to be transversely adjusted, the nut 805 is rotated, and the rotation of the nut 805 drives the threaded rod 804 fixedly connected therewith to rotate. Since the threaded rod 804 is threadedly connected with the support rod 803 on the inner side of the first transverse base body 1, during the rotation of the threaded rod 804, it will move axially along the support rod 803. The second clamping groove 801 on the inner side of the second transverse base body 2 cooperates with the second clamping plate 802 of the first transverse base body 1. When the threaded rod 804 moves, the second clamping plate 802 will slide in the second clamping groove 801, guiding and limiting the movement direction of the second transverse base body 2, so that it can only smoothly slide in the transverse direction, thereby realizing the transverse position adjustment of the second transverse base body 2 relative to the first transverse base body 1, and changing the transverse size of the entire intervertebral cage to adapt to the transverse width requirements of different intervertebral spaces, ensuring that the cage can closely fit the intervertebral space after implantation, providing good foundation conditions for spinal fusion, and improving the effect and success rate of the operation.

[0029] Further, the position of the second clamping plate 802 corresponds to the position of the second clamping groove 801, and the outer wall size of the second clamping plate 802 matches the inner wall size of the second clamping groove 801. Through the arrangement of the second clamping groove 801 and the second clamping plate 802, the precise cooperation provides stable and accurate guidance for the movement of the second transverse base body 2 during transverse adjustment. When the second transverse base body 2 is pushed to move transversely by the threaded rod 804, the second clamping plate 802 smoothly slides in the second clamping groove 801, effectively limiting the freedom of the second transverse base body 2 except the transverse direction, avoiding unstable movement such as shaking, deviation or twisting, etc. This makes the transverse adjustment of the intervertebral fusion cage accurate in the expected direction and distance, ensuring the accuracy and reliability of each adjustment. From the overall stability of the fusion cage, the closely matched second clamping plate 802 and second clamping groove 801 can better withstand stresses from various directions of the spine after the fusion cage is implanted in the spine. In daily activities, the human spine is constantly subjected to various complex forces, such as bending, twisting, compression, etc. At this time, the close cooperation of the second clamping plate 802 and the second clamping groove 801 can prevent relative displacement between the components of the fusion cage, ensuring that the fusion cage maintains a stable structure in the intervertebral space, reducing the occurrence of complications such as intervertebral fusion failure, nerve and blood vessel compression, etc. caused by loosening or displacement of the fusion cage, thereby creating a good mechanical environment for spinal fusion, promoting bone fusion between adjacent vertebral bodies, and facilitating the patient's postoperative recovery and long-term stable recovery of spinal function.

[0030] Working principle: first, according to the specific shape and size of the patient intervertebral space adjustment, for the transverse size adjustment, by rotating the screw cap 805 in the transverse adjustment mechanism 8, drive threaded rod 804 in the support rod 803 rotation and axial movement, the second clamping plate 802 in the second clamping groove 801 stable sliding, the second transverse base 2 relative to the first transverse base 1 smoothly transverse movement, realize accurate transverse size adjustment, ensure the transverse width of the intervertebral space adaptation, then proceed to the vertical size adjustment, the first vertical base 3 exert vertical force, the first clamping plate 702 in the first clamping groove 701 sliding, wedge body 711 extrusion makes the limiting plate 710 compression expansion spring 709 and shrink into the expansion hole 708, auxiliary rod 706 in the expansion slot 704 sliding and limiting block 707 in the limiting slot 705 moves to ensure stable guidance, vertical movement to the appropriate position, expansion spring 709 push wedge body 711 card into the corresponding wedge slot 712 complete vertical positioning, after the size of each base is adjusted, the interbody fusion cage is implanted into the intervertebral space, then tighten the first vertical base 3 and the second vertical base 4 surface multiple sets of fixed plate 5 evenly distributed screw 6, make the fixed plate 5 firmly connected with adjacent vertebral body, multiple sets of fixed plate 5 from different positions to disperse stress, prevent the fusion cage from rotating or displacement between the vertebral body, maintain the normal anatomic structure and mechanical balance of the spine, create a stable environment for interbody fusion, promote bone tissue growth and fusion in the cage and around, reduce the adverse effects on the surrounding nerves, blood vessels and other important tissues, reduce the incidence of surgical complications, ultimately benefit the patient's postoperative rehabilitation and long-term stable recovery of spinal function, improve the overall treatment effect and prognosis quality of spinal surgery, so the use of a kind of interbody fusion cage is completed.

[0031] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An intervertebral cage comprising a first transverse base (1), characterized in that: The side of the first transverse base (1) is slidably connected with the second transverse base (2), the side of the second transvertical base (2) is slidably connected with the first vertical base (3), the side of the first vertical base (3) is slidably connected with the second vertical base (4), the surfaces of the first vertical base (3) and the second vertical base (4) are fixedly connected with the fixed plate (5), the inside of the fixed plate (5) penetrates the screw (6), the surfaces of the first transverse base (1) and the first vertical base (3) are provided with the vertical adjusting mechanism (7), and the surfaces of the first transverse base (1) and the second transverse base (2) are provided with the transverse adjusting mechanism (8). The vertical adjusting mechanism (7) comprises a first clamping groove (701), a first clamping plate (702), a fixed rod (703), an expansion slot (704), a limiting slot (705), an auxiliary rod (706), a limiting block (707), an expansion hole (708), an expansion spring (709), a limiting plate (710), a wedge-shaped body (711) and a wedge-shaped groove (712), the inside of the first transverse base (1) is provided with the first clamping groove (701), the side of the first vertical base (3) is fixedly connected with the first clamping plate (702), the inside of the first clamping groove (701) is fixedly connected with the fixed rod (703), the inside of the fixed rod (703) is provided with the expansion slot (704), the inside of the expansion slot (704) is provided with the limiting slot (705), the inside wall of the expansion slot (704) is slidably connected with the auxiliary rod (706), the bottom of the auxiliary rod (706) is fixedly connected with the limiting block (707), the inside of the first clamping plate (702) is provided with the expansion hole (708), one end of the inside of the expansion hole (708) is fixedly connected with the expansion spring (709), one end of the expansion spring (709) is fixedly connected with the limiting plate (710), the outside of the limiting plate (710) is fixedly connected with the wedge-shaped body (711), and the inside of the first clamping groove (701) is provided with the wedge-shaped groove (712).

2. The intervertebral cage of claim 1, wherein: The first transverse base (1) and the second transverse base (2) are slidably connected with each other, the second transverse base (2) and the first vertical base (3) are slidably connected with each other, the first vertical base (3) and the second vertical base (4) are slidably connected with each other, and the second vertical base (4) and the first transverse base (1) are slidably connected with each other.

3. The intervertebral cage of claim 1, wherein: The fixed plate (5) is provided with a plurality of groups on the surfaces of the first vertical base (3) and the second vertical base (4), and the screws (6) are evenly distributed on the surfaces of each group of fixed plates (5).

4. The intervertebral cage of claim 1, wherein: The position of the first clamping groove (701) corresponds to the position of the first clamping plate (702), and the outer wall size of the first clamping plate (702) is consistent with the inner wall size of the first clamping groove (701).

5. The intervertebral implant as recited in claim 1, wherein: The outer wall size of the wedge-shaped body (711) is consistent with the inner wall size of the wedge-shaped groove (712), and a plurality of groups of wedge-shaped grooves (712) are equidistantly arranged on the inside of the first clamping groove (701).

6. The intervertebral implant as recited in claim 1, wherein: The transverse adjusting mechanism (8) comprises a second clamping groove (801), a second clamping plate (802), a supporting rod (803), a threaded rod (804) and a nut (805), the inner side of the second transverse base (2) is provided with the second clamping groove (801), the inner end of the first transverse base (1) is fixedly connected with the second clamping plate (802), the inner side of the first transverse base (1) is fixedly connected with the supporting rod (803), the inside of the supporting rod (803) is threadedly connected with the threaded rod (804), and one end of the threaded rod (804) is fixedly connected with the nut (805).

7. An intervertebral cage according to claim 6, wherein: The position of the second clamping plate (802) corresponds to the position of the second clamping groove (801), and the outer wall size of the second clamping plate (802) is consistent with the inner wall size of the second clamping groove (801).

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