An adjustable lumbar anterior wedge fusion device

Abstract

This invention relates to an adjustable lumbar lateral anterior wedge fusion device, comprising a first body, a second body, a first support rod and a second support rod rotatably mounted at one end on the first body and the other end on the second body, a third support rod and a fourth support rod rotatably mounted at one end on the first body and the other end on the second body, and an angle adjustment device for adjusting the tilt angle of the second body. This invention, through its angle adjustment mechanism, can achieve both anterior-posterior and lateral angle adjustments, as well as multi-angle adjustments of the second body, resulting in better fit and stability between the device and the upper and lower vertebrae.

Description

Technical Field

[0001] This invention relates to the field of vertebral fusion device technology, specifically to an adjustable lumbar lateral anterior wedge-shaped fusion device. Background Technology

[0002] Lumbar disc degeneration is a common human disease, leading to lumbar instability, spondylolisthesis, and other disc disorders. Interbody fusion (IBD) is an effective treatment for disc degeneration, achieved by implanting a lumbar fusion cage into the affected area. In traditional techniques, poor fit between the implanted lumbar fusion cage and the vertebral bodies above and below the vertebrae is common. Therefore, existing lumbar fusion cages improve fit by adjusting their anterior-posterior or lateral angles. However, there is currently no lumbar fusion cage that can adjust both anterior-posterior and lateral angles, resulting in poor versatility.

[0003] Therefore, there is an urgent need for an adjustable lumbar lateral anterior wedge fusion device that can adjust both the anterior-posterior angle and the lateral angle. Summary of the Invention

[0004] To address the problems in the prior art, this invention provides an adjustable lumbar lateral anterior wedge fusion device that can adjust both the anterior-posterior angle and the lateral angle.

[0005] The technical solution adopted by this invention to solve its technical problem is: an adjustable lumbar lateral anterior wedge fusion device, comprising a first main body, a second main body, a first support rod and a second support rod rotatably mounted on the first main body at one end and rotatably mounted on the second main body at the other end, a third support rod and a fourth support rod rotatably mounted on the first main body at one end and rotatably mounted on the second main body at the other end, and an angle adjustment device for adjusting the tilt angle of the second main body; the first support rod to the fourth support rod have the same structure; the first support rod includes a first rod body rotatably mounted on the first main body at one end, a second rod body slidably mounted on the first rod body at one end and rotatably mounted on the second main body at the other end, and a first spring fixedly mounted on the first rod body at one end and fixedly mounted on the second rod body at the other end; An air cavity is formed between the first rod and the second rod; the angle adjustment device includes a first housing fixedly mounted on the first main body, a first push plate slidably mounted on the inner wall of the first housing, a first partition plate fixed at one end on the first push plate and movably mounted on the first housing, a second push plate slidably mounted on the first housing, a first push rod fixedly mounted on the first push plate, a second push rod fixed at one end on the second push plate and movably mounted on the first push plate, a first connecting rod fixedly sleeved on the first push rod, and a first receiving cavity disposed within the first housing; the second push rod movably mounted on the first connecting rod; the first partition plate and the second push plate divide the first receiving cavity into a cavity, a second cavity, and a third cavity; the first partition plate is provided with a plurality of first air outlets. In use, this invention is implanted between the lumbar vertebrae and then supported by four support rods for greater stability. An angle adjustment mechanism allows simultaneous control of the raising of two support rods, enabling the second main body to be adjusted both forward and backward as well as left and right. Furthermore, the raising height of each of the four support rods can be individually controlled, achieving multi-angle adjustment of the second main body and thus enhancing its versatility. The multi-angle adjustment of the second main body through the angle adjustment mechanism also improves the fit between the first and second main bodies and the upper and lower vertebrae, making the invention less prone to displacement after implantation and thus contributing to greater spinal stability.

[0006] Specifically, the angle adjustment device further includes a first hose with one end connected to the first cavity and the other end connected to the air cavity, a second hose with one end connected to the third cavity and the other end located on the second support rod, a first fixing component located on the first push rod, and a second fixing component located on the second push rod; the first fixing component and the second fixing component have the same structure.

[0007] Specifically, the first fixing component includes a first support plate fixedly mounted on the first main body, a plurality of first limiting holes equally spaced on the first support plate, a spring telescopic rod with one end mounted on the first push rod, and a ball rotatably mounted on the spring telescopic rod.

[0008] Specifically, the angle adjustment device further includes a second housing fixedly mounted on the first main body, a first pull plate slidably mounted on the inner wall of the second housing, a second partition plate fixed at one end to the first pull plate and movably mounted on the second housing, a second pull plate slidably mounted on the second housing, a first pull rod fixedly mounted on the first pull plate, a second pull rod fixed at one end to the second pull plate and movably mounted on the first pull plate, a second connecting rod fixedly sleeved on the first pull plate, and a second receiving cavity disposed within the second housing; the second pull rod movably mounted on the second connecting rod; the second partition plate and the second pull plate divide the second receiving cavity into a fourth cavity, a fifth cavity, and a sixth cavity; the second partition plate is provided with a plurality of second air vents.

[0009] Specifically, the angle adjustment device further includes a third flexible tube with one end connected to the fourth cavity and the other end located on the third support rod, a fourth flexible tube with one end connected to the sixth cavity and the other end located on the fourth support rod, a third fixing component located on the first pull rod, and a fourth fixing component located on the second pull rod; the third fixing component and the fourth fixing component have the same structure.

[0010] Specifically, the third fixing component includes a support fixedly mounted on the first main body, a sleeve fixedly mounted on the support, a plurality of second limiting holes equally spaced on the inner wall of the sleeve, a plurality of third limiting holes equally spaced on the inner wall of the sleeve, a through groove on the first pull rod, a first limiting plate and a second limiting plate slidably mounted on the through groove, a second spring and a third spring with one end fixed on the first limiting plate and the other end fixed on the second limiting plate, a first roller rotatably mounted on the first limiting plate, and a second roller rotatably mounted on the second limiting plate; one end of the first pull rod is slidably mounted through the sleeve.

[0011] Specifically, a first plate is fixedly sleeved on the first push rod, a second plate is fixedly sleeved on the second push rod, a first insertion hole is provided on the first plate, a first round rod is fixedly provided on the second plate at one end, a second round rod is slidably provided on the first round rod, and a first handle is fixedly sleeved on the second round rod; the other end of the second round rod is tightly fitted with the first insertion hole.

[0012] Specifically, a third plate is fixedly sleeved on the first pull rod, a fourth plate is fixedly sleeved on the second pull rod, a second insertion hole is provided on the third plate, a third round rod is fixedly provided on the fourth plate at one end, a fourth round rod is slidably provided on the third round rod, and a second handle is fixedly sleeved on the fourth round rod; the other end of the fourth round rod is tightly fitted with the second insertion hole.

[0013] Specifically, the third plate is provided with a first sliding groove, a first sliding plate slidably disposed on the first sliding groove, a fourth spring fixed at one end on the first sliding plate and at the other end on the third plate, a first rack fixed on the first sliding plate, a first insert rod fixed on the first sliding plate, a first L-shaped rod fixed on the first main body, a first slider slidably disposed on the first L-shaped rod, a fifth spring fixed at one end on the first slider and at the other end on the first L-shaped rod, a third insertion hole disposed on the first slider, a first rotating shaft rotatably disposed at one end on the first housing, a first gear fixedly sleeved on the first rotating shaft, and a second rack fixedly disposed on the first plate and meshing with the first gear; the first insert rod and the third insertion hole are tightly fitted together.

[0014] Specifically, the fourth plate is provided with a second sliding groove, a second sliding plate slidably disposed on the second sliding groove, a sixth spring fixed at one end on the second sliding plate and at the other end on the fourth plate, a third rack fixed on the second sliding plate, a second insert rod fixed on the second sliding plate, a second L-shaped rod fixed on the first main body, a second slider slidably disposed on the second L-shaped rod, a seventh spring fixed at one end on the second slider and at the other end on the second L-shaped rod, a fourth insertion hole disposed on the second slider, a second rotating shaft rotatably disposed at one end on the first housing, a second gear fixedly sleeved on the second rotating shaft, and a fourth rack fixed on the second plate and meshing with the second gear; the second insert rod is tightly fitted with the fourth insertion hole.

[0015] The beneficial effects of this invention are:

[0016] (1) When in use, the present invention is implanted between the lumbar vertebrae and then supported by four support rods, which makes it more stable; the angle adjustment mechanism can simultaneously control the raising of two support rods, so that the second main body can achieve both front-to-back angle adjustment and left-to-right angle adjustment, and can also individually control the raising height of the four support rods to achieve multi-angle adjustment of the second main body, thus making the present invention highly versatile.

[0017] (2) The first to the fourth fixing components enable the fixing to be completed after the height of the support rod is adjusted, i.e., the variable adjustment side is fixed.

[0018] (3) The first and second bodies are provided with tooth-shaped protrusions to prevent the invention from coming out between the upper and lower vertebrae. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2This is a left view of the present invention.

[0022] Figure 3 for Figure 2 AA-line structural section view;

[0023] Figure 4 for Figure 3 Enlarged view of point A in the image;

[0024] Figure 5 This is a front view of the present invention;

[0025] Figure 6 for Figure 5 BB line section view in the middle;

[0026] Figure 7 for Figure 5 CC line structural section view in the middle;

[0027] Figure 8 for Figure 7 Enlarged view of point B in the image;

[0028] Figure 9 for Figure 7 Enlarged view of point C in the image;

[0029] Figure 10 for Figure 7 Enlarged view of point D in the image;

[0030] Figure 11 This is a partial structural diagram of the present invention;

[0031] Figure 12 This is a partial structural diagram of the present invention;

[0032] Figure 13 for Figure 12 Enlarged view of point E in the image;

[0033] Figure 14 for Figure 12 The left view;

[0034] Figure 15 for Figure 14 AA-line structural section view;

[0035] Figure 16 for Figure 15 Enlarged view of point F in the image;

[0036] Figure 17 for Figure 15 Enlarged view of point G in the image;

[0037] Figure 18 This is a partial structural diagram of the present invention;

[0038] Figure 19This is a partial structural diagram of the present invention. Detailed Implementation

[0039] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0040] like Figures 1-19As shown, the adjustable lumbar lateral anterior wedge fusion device of the present invention includes a first body 1, a second body 2, a first support rod 3 and a second support rod 4 rotatably mounted on the first body and the other end of the second body, a third support rod 5 and a fourth support rod 6 rotatably mounted on the first body and the other end of the second body, and an angle adjustment device 7 for adjusting the tilt angle of the second body; the first support rod 3 to the fourth support rod 6 have the same structure; the first support rod 3 includes a first rod body 31 rotatably mounted on the first body, a second rod body 32 slidably mounted on the first rod body and rotatably mounted on the second body, and a first spring 33 fixed on the first rod body and the other end of the second rod body; the first rod body and the second support rod 32... An air cavity 34 is formed between the rods; the angle adjustment device 7 includes a first housing 71 fixedly mounted on the first main body, a first push plate 72 slidably mounted on the inner wall of the first housing, a first partition plate 73 fixed at one end on the first push plate and movably mounted on the first housing, a second push plate 74 slidably mounted on the first housing, a first push rod 75 fixedly mounted on the first push plate, a second push rod 76 fixed at one end on the second push plate and movably mounted on the first push plate, a first connecting rod 77 fixedly sleeved on the first push rod, and a first receiving cavity disposed in the first housing; the second push rod movably mounted on the first connecting rod; the first partition plate and the second push plate divide the first receiving cavity into a cavity 78, a second cavity 79, and a third cavity 710; the first partition plate is provided with a plurality of first air outlets 711. In use, the invention is implanted between the lumbar vertebrae and then supported by four support rods for greater stability. An angle adjustment mechanism allows simultaneous control of the raising of two support rods, enabling the second main body to be adjusted both forward and backward as well as left and right. Furthermore, the raising height of each of the four support rods can be individually controlled, allowing for multi-angle adjustment of the second main body and enhancing its versatility. The multi-angle adjustment of the second main body through the angle adjustment mechanism also improves the fit between the first and second main bodies and the upper and lower vertebrae, making the invention less prone to displacement after implantation and thus contributing to greater spinal stability.When adjusting the first support rod, the first push rod is pushed to move. This movement causes the first push plate and the first partition plate to move. At this time, gas in the second cavity enters the first cavity through multiple first air outlets, increasing the pressure within the first cavity. The gas then enters the air chamber through the first flexible tube, further increasing the pressure there as well. This pushes the second rod upwards, and also pushes one corner of the second main body upwards. Simultaneously, one end of the first support rod rotates on the first main body, and the other end rotates on the second main body. After the position is adjusted, the first fixing component secures the position of the first push rod. Furthermore, if the second support rod is to be raised further, it can be pushed to move. This movement causes the second push rod to move, increasing the pressure in the third cavity. Gas in the third cavity enters the second support rod through the second flexible tube, causing the second support rod to extend. Both ends of the second support rod rotate. After the position is adjusted, the second fixing component secures the second push rod. This allows for multi-angle adjustment of the second main body, resulting in better fit between the invention and the upper and lower vertebrae.

[0041] Specifically, the angle adjustment device 7 further includes a first flexible tube 712 with one end connected to the first cavity and the other end connected to the air cavity, a second flexible tube 713 with one end connected to the third cavity and the other end mounted on the second support rod, a first fixing component 714 mounted on the first push rod, and a second fixing component 715 mounted on the second push rod; the first fixing component 714 and the second fixing component 715 have the same structure. The first fixing component enables the first push rod to be fixed while moving, and the second fixing component enables the second push rod to be fixed while moving, preventing the first push rod or the second push rod from moving.

[0042] Specifically, the first fixing component 714 includes a first support plate 7141 fixedly mounted on the first main body, a plurality of first limiting holes 7142 equally spaced on the first support plate, a spring telescopic rod 7143 with one end mounted on the first push rod, and a ball bearing 7144 rotatably mounted on the spring telescopic rod. When the first push rod is pushed to move, it moves the spring telescopic rod together. At the same time, the spring telescopic rod extends and retracts through the action of the first limiting holes. After moving to the appropriate position, the spring telescopic rod causes the ball bearing to return to the first limiting hole, and the first limiting hole limits the first push rod. The working principle of the second fixing component is the same as that of the first fixing component.

[0043] Specifically, the angle adjustment device 7 further includes a second housing 81 fixedly mounted on the first main body, a first pull plate 82 slidably mounted on the inner wall of the second housing, a second partition plate 83 fixed at one end on the first pull plate and movably mounted on the second housing, a second pull plate 84 slidably mounted on the second housing, a first pull rod 85 fixedly mounted on the first pull plate, a second pull rod 86 fixed at one end on the second pull plate and movably mounted on the first pull plate, a second connecting rod 87 fixedly sleeved on the first pull plate, and a second receiving cavity disposed within the second housing; the second pull rod is movably mounted on the second connecting rod; the second partition plate and the second pull plate divide the second receiving cavity into four cavities 88, a fifth cavity 89, and a sixth cavity 810; the second partition plate is provided with a plurality of second air vents 811. When adjusting the third support rod, pulling the first pull rod moves it, causing the first pull plate and the second partition plate to move together. At this time, the gas in the fifth chamber enters the fourth chamber through multiple second vents, increasing the pressure in the fourth chamber. Consequently, the gas in the fourth chamber enters the third support rod through the third hose, causing the third support rod to extend. Simultaneously, the second rod moves upward at one angle, and one end of the third support rod rotates on the first body while the other end rotates on the second body. After adjusting the position, the first pull rod is fixed in place by the third fixing component. Furthermore, to raise the fourth support rod further, pulling the second pull rod moves it, causing the second pull plate to move. This increases the pressure in the sixth chamber, and the gas in the sixth chamber enters the fourth support rod through the fourth hose, causing the fourth support rod to extend. Simultaneously, both ends of the fourth support rod rotate on the first and second bodies. After adjusting the position, the second pull rod is fixed in place by the second fixing component. This allows for multi-angle adjustment of the second body, resulting in better fit between the invention and the upper and lower vertebrae.

[0044] Specifically, the angle adjustment device 7 further includes a third flexible tube 812 with one end connected to the fourth cavity and the other end located on the third support rod, a fourth flexible tube 813 with one end connected to the sixth cavity and the other end located on the fourth support rod, a third fixing component 814 located on the first pull rod, and a fourth fixing component 815 located on the second pull rod; the third fixing component 814 and the fourth fixing component 815 have the same structure. The third fixing component enables the first pull rod to be fixed while moving, and the fourth fixing component enables the second pull rod to be fixed while moving, preventing the first or second pull rod from moving and further enhancing the stability of the invention.

[0045] Specifically, the third fixing component 814 includes a support 8141 fixedly mounted on the first main body, a sleeve 8142 fixedly mounted on the support, a plurality of second limiting holes 8143 equidistantly spaced on the inner wall of the sleeve, a plurality of third limiting holes 8144 equidistantly spaced on the inner wall of the sleeve, a through groove 8145 mounted on the first pull rod, a first limiting plate 8146 and a second limiting plate 8147 slidably mounted on the through groove, a second spring 8148 and a third spring 8149 fixed at one end on the first limiting plate and at the other end on the second limiting plate, a first roller 8150 rotatably mounted on the first limiting plate, and a second roller 8151 rotatably mounted on the second limiting plate; one end of the first pull rod is slidably mounted through the sleeve. When the first pull rod is pulled, the first and second limiting plates move together. At the same time, the first and second rollers roll. Through the setting of multiple second and third limiting holes, the first and second limiting plates can move relative to each other and in opposite directions on the through groove. Meanwhile, the second and third springs extend and retract. When the first pull rod moves to the appropriate position, the first roller is back in the second limiting hole and the second roller is back in the third limiting hole, thereby limiting the first pull rod and fixing its position while moving.

[0046] Specifically, a first plate 751 is fixedly sleeved on the first push rod 75, a second plate 752 is fixedly sleeved on the second push rod, a first insertion hole 753 is provided on the first plate, a first round rod 754 is fixedly mounted on the second plate at one end, a second round rod 755 is slidably mounted on the first round rod, and a first handle 756 is fixedly sleeved on the second round rod; the other end of the second round rod is tightly fitted with the first insertion hole. When the first handle is pulled, the second round rod is moved until it is inserted into the first insertion hole. Since the other end of the second round rod is tightly fitted with the first insertion hole, it will not disengage after insertion. Then, the first plate can be pushed to move, and the first plate and the second plate move simultaneously. At this time, it is equivalent to simultaneously controlling the height of the first support rod and the second support rod, so that the front side of the second main body is raised, which is equivalent to adjusting the front and rear angle of the second main body.

[0047] Specifically, a third plate 851 is fixedly sleeved on the first pull rod 85, a fourth plate 852 is fixedly sleeved on the second pull rod, a second insertion hole 853 is provided on the third plate, a third round rod 854 is fixedly mounted on the fourth plate at one end, a fourth round rod 855 is slidably mounted on the third round rod, and a second handle 856 is fixedly sleeved on the fourth round rod; the other end of the fourth round rod is tightly fitted with the second insertion hole. When the second handle is pulled, the fourth round rod is moved until it is inserted into the second insertion hole. Since the other end of the fourth round rod is tightly fitted with the second insertion hole, it will not disengage after insertion. Then the third plate can be pulled, and the third plate and the fourth plate move simultaneously. At this time, it is equivalent to simultaneously controlling the height of the third support rod and the fourth support rod, so that the rear side of the second main body is raised, which is equivalent to adjusting the front and rear angle of the second main body.

[0048] Specifically, the third plate 851 is provided with a first sliding groove 8511, a first sliding plate 8512 slidably disposed on the first sliding groove, a fourth spring 8513 fixed at one end on the first sliding plate and at the other end on the third plate, a first rack 8514 fixed on the first sliding plate, a first insert rod 8515 fixed on the first sliding plate, a first L-shaped rod 8516 fixed on the first main body, a first slider 8517 slidably disposed on the first L-shaped rod, a fifth spring 8518 fixed at one end on the first slider and at the other end on the first L-shaped rod, a third insertion hole 8519 disposed on the first slider, a first rotating shaft 8520 rotatably disposed at one end on the first housing, a first gear 8521 fixedly sleeved on the first rotating shaft, and a second rack 8522 fixedly disposed on the first plate and meshing with the first gear; the first insert rod and the third insertion hole are tightly fitted together. Pushing the first insert rod upwards causes the first slide plate to move upwards within the first groove. At this time, the fourth spring shortens. When the other end of the first insert rod is inserted into the third hole, it fits tightly with the third hole and the two will not disengage. At this time, the first rack meshes with the first gear. Then, the first shaft rotates, which in turn drives the first gear to rotate, causing the first rack and the second rack to move in opposite directions. This allows the first push rod and the first pull rod to move in opposite directions. During the movement, the first slider moves on the first L-shaped plate. The fifth spring has a reset function. At this time, it is equivalent to simultaneously controlling the raising height of the first support rod and the third support rod. This is equivalent to raising the right side of the second main body, which is equivalent to adjusting the left and right angles of the second main body.

[0049] Specifically, the fourth plate 852 is provided with a second sliding groove 8523, a second sliding plate 8524 slidably disposed on the second sliding groove, a sixth spring 8525 with one end fixed to the second sliding plate and the other end fixed to the fourth plate, a third rack 8526 fixed to the second sliding plate, a second insert rod 8527 fixed to the second sliding plate, a second L-shaped rod 8528 fixed to the first main body, a second slider 8529 slidably disposed on the second L-shaped rod, a seventh spring 8530 with one end fixed to the second slider and the other end fixed to the second L-shaped rod, and a fourth insertion hole 8531 disposed on the second slider. A second rotating shaft 8532 is rotatably mounted on the first housing; a second gear 8533 is fixedly sleeved on the second rotating shaft; a fourth rack 8534 is fixedly mounted on the second plate and meshes with the second gear; the second insertion rod is tightly fitted with the fourth insertion hole; the second plate is marked with the character "1", the second support rod is marked with the character "1", the first plate is marked with the character "2", the first support rod is marked with the character "2", the fourth plate is marked with the character "3", the fourth support rod is marked with the character "3", the third plate is marked with the character "4", and the third support rod is marked with the character "4". Pushing the second insert rod upwards moves the second slide plate upwards within the second groove. At this point, the sixth spring shortens. When the other end of the second insert rod is inserted into the fourth insertion hole, they fit tightly together and will not disengage. Simultaneously, the third rack meshes with the second gear. Rotating the second shaft rotates the second gear, causing the third and fourth racks to move in opposite directions. This results in the second push rod and second pull rod moving in opposite directions, while the second slider moves on the second L-shaped plate. The seventh spring has a resetting function. This effectively controls the raising height of both the second and fourth support rods simultaneously, raising the right side of the second main body and ultimately adjusting its left and right angles. Numerical labels are used, with identical numbers indicating consistency (e.g., the first plate controls the first support rod, the second plate controls the second support rod), facilitating quick user identification and preventing operational errors.

[0050] In summary, this invention, through its angle adjustment mechanism, can simultaneously control the raising of two support rods, enabling the second main body to achieve both front-to-back and left-to-right angle adjustments. Furthermore, it can individually control the raising height of all four support rods, achieving multi-angle adjustment of the second main body and enhancing its versatility. The multi-angle adjustment of the second main body through the angle adjustment mechanism further improves the fit between the first and second main bodies and the upper and lower vertebral bodies, making the invention less prone to displacement after implantation and thus resulting in greater spinal stability.

[0051] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0052] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An adjustable lumbar anterior wedge-shaped fusion device, characterized in that: The system includes a first main body (1), a second main body (2), a first support rod (3) and a second support rod (4) rotatably mounted on the first main body and the second main body, a third support rod (5) and a fourth support rod (6) rotatably mounted on the first main body and the second main body, and an angle adjustment device (7) for adjusting the tilt angle of the second main body; the first support rod (3) to the fourth support rod (6) have the same structure; the first support rod (3) includes a first rod body (31) rotatably mounted on the first main body, a second rod body (32) slidably mounted on the first rod body and rotatably mounted on the second main body, and a first spring (33) fixed on the first rod body and the second rod body; an air cavity (34) is formed between the first rod body and the second rod body. The angle adjustment device (7) includes a first housing (71) fixedly mounted on the first main body, a first push plate (72) slidably mounted on the inner wall of the first housing, a first partition plate (73) fixed at one end on the first push plate and movably mounted on the first housing, a second push plate (74) slidably mounted on the first housing, a first push rod (75) fixedly mounted on the first push plate, a second push rod (76) fixed at one end on the second push plate and movably mounted on the first push plate, a first connecting rod (77) fixedly sleeved on the first push rod, and a first receiving cavity located inside the first housing; the second push rod is movably mounted on the first connecting rod; the first partition plate and the second push plate divide the first receiving cavity into a cavity (78), a second cavity (79), and a third cavity (710); the first partition plate is provided with a plurality of first air vents (711).

2. The adjustable lumbar lateral anterior wedge-shaped fusion device according to claim 1, characterized in that: The angle adjustment device (7) further includes a first hose (712) with one end connected to the first cavity and the other end connected to the air cavity, a second hose (713) with one end connected to the third cavity and the other end located on the second support rod, a first fixing component (714) located on the first push rod, and a second fixing component (715) located on the second push rod; the first fixing component (714) and the second fixing component (715) have the same structure.

3. An adjustable lumbar lateral anterior wedge-shaped fusion device according to claim 2, characterized in that: The first fixing component (714) includes a first support plate (7141) fixed on the first main body, a plurality of first limiting holes (7142) equally spaced on the first support plate, a spring telescopic rod (7143) with one end on the first push rod, and a ball (7144) rotatably disposed on the spring telescopic rod.

4. An adjustable lumbar anterior wedge-shaped fusion device according to claim 3, characterized in that: The angle adjustment device (7) further includes a second housing (81) fixedly mounted on the first main body, a first pull plate (82) slidably mounted on the inner wall of the second housing, a second partition plate (83) fixed at one end on the first pull plate and movably mounted on the second housing, a second pull plate (84) slidably mounted on the second housing, a first pull rod (85) fixedly mounted on the first pull plate, a second pull rod (86) fixed at one end on the second pull plate and movably mounted on the first pull plate, a second connecting rod (87) fixedly sleeved on the first pull plate, and a second receiving cavity located inside the second housing; the second pull rod movably mounted on the second connecting rod; the second partition plate and the second pull plate divide the second receiving cavity into a fourth cavity (88), a fifth cavity (89), and a sixth cavity (810); the second partition plate is provided with a plurality of second air vents (811).

5. An adjustable lumbar lateral anterior wedge-shaped fusion device according to claim 4, characterized in that: The angle adjustment device (7) further includes a third flexible tube (812) with one end connected to the fourth cavity and the other end located on the third support rod, a fourth flexible tube (813) with one end connected to the sixth cavity and the other end located on the fourth support rod, a third fixing component (814) located on the first pull rod, and a fourth fixing component (815) located on the second pull rod; the third fixing component (814) and the fourth fixing component (815) have the same structure.

6. An adjustable lumbar anterior wedge-shaped fusion device according to claim 5, characterized in that: The third fixing component (814) includes a support (8141) fixed on the first main body, a sleeve (8142) fixed on the support, a plurality of second limiting holes (8143) equidistantly spaced on the inner wall of the sleeve, a plurality of third limiting holes (8144) equidistantly spaced on the inner wall of the sleeve, a through groove (8145) on the first pull rod, a first limiting plate (8146) and a second limiting plate (8147) slidably disposed on the through groove, a second spring (8148) and a third spring (8149) fixed at one end on the first limiting plate and at the other end on the second limiting plate, a first roller (8150) rotatably disposed on the first limiting plate, and a second roller (8151) rotatably disposed on the second limiting plate; one end of the first pull rod is slidably disposed on the sleeve.

7. An adjustable lumbar lateral anterior wedge-shaped fusion device according to claim 6, characterized in that: A first plate (751) is fixedly sleeved on the first push rod (75), a second plate (752) is fixedly sleeved on the second push rod, a first insertion hole (753) is provided on the first plate, a first round rod (754) is fixedly provided on the second plate at one end, a second round rod (755) is slidably provided on the first round rod, and a first handle (756) is fixedly sleeved on the second round rod; the other end of the second round rod is tightly fitted with the first insertion hole.

8. An adjustable lumbar anterior wedge-shaped fusion device according to claim 7, characterized in that: A third plate (851) is fixedly sleeved on the first pull rod (85), a fourth plate (852) is fixedly sleeved on the second pull rod, a second insertion hole (853) is provided on the third plate, a third round rod (854) is fixedly provided on the fourth plate at one end, a fourth round rod (855) is slidably provided on the third round rod, and a second handle (856) is fixedly sleeved on the fourth round rod; the other end of the fourth round rod is tightly fitted with the second insertion hole.

9. An adjustable lumbar anterior wedge-shaped fusion device according to claim 8, characterized in that: The third plate (851) is provided with a first sliding groove (8511), a first sliding plate (8512) slidably disposed on the first sliding groove, a fourth spring (8513) fixed at one end on the first sliding plate and at the other end fixed on the third plate, a first rack (8514) fixed on the first sliding plate, a first insert rod (8515) fixed on the first sliding plate, a first L-shaped rod (8516) fixed on the first main body, a first slider (8517) slidably disposed on the first L-shaped rod, a fifth spring (8518) fixed at one end on the first slider and at the other end fixed on the first L-shaped rod, a third insertion hole (8519) disposed on the first slider, a first rotating shaft (8520) rotatably disposed at one end on the first housing, a first gear (8521) fixedly sleeved on the first rotating shaft, and a second rack (8522) fixedly disposed on the first plate and meshing with the first gear; the first insert rod and the third insertion hole are tightly fitted together.

10. An adjustable lumbar anterior wedge-shaped fusion device according to claim 9, characterized in that: The fourth plate (852) is provided with a second sliding groove (8523), a second sliding plate (8524) slidably disposed on the second sliding groove, a sixth spring (8525) fixed at one end on the second sliding plate and at the other end on the fourth plate, a third rack (8526) fixed on the second sliding plate, a second insert rod (8527) fixed on the second sliding plate, a second L-shaped rod (8528) fixed on the first main body, a second slider (8529) slidably disposed on the second L-shaped rod, a seventh spring (8530) fixed at one end on the second slider and at the other end on the second L-shaped rod, a fourth insertion hole (8531) disposed on the second slider, a second rotating shaft (8532) rotatably disposed at one end on the first housing, a second gear (8533) fixedly sleeved on the second rotating shaft, and a fourth rack (8534) fixedly disposed on the second plate and meshing with the second gear; the second insert rod and the fourth insertion hole are tightly fitted together.

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