Interbody Fusion Cage

Abstract

The present invention provides an intervertebral fusion device, which includes: a mounting body, including a first prosthesis frame and a second prosthesis frame, the first prosthesis frame is located above the second prosthesis frame, the first prosthesis frame and the second prosthesis frame both have vertebral body connection parts, the bottom end of the first prosthesis frame and the top end of the second prosthesis frame are matched with each other in the horizontal direction; an adjustment device, including a fixing frame and an elastic adjustment mechanism, the bottom end of the fixing frame is arranged on the second prosthesis frame, the elastic adjustment mechanism is movably arranged on the fixing frame, and the first prosthesis frame has an abutment portion, and the abutment portion abuts with the top end of the elastic adjustment mechanism. The technical solution provided by the present application can solve the problem in the related art that during the use of the fusion device, the installation height of the upper and lower intervertebral fusion device cannot be adaptively adjusted, the spine at the upper and lower ends of the fusion device is pressed together, which easily causes surface wear of the fusion device and affects the bony fusion between the upper and lower vertebrae.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an intervertebral fusion device. Background Art

[0002] The spine is the "pillar of life" for mammalian vertebrates, especially for humans who stand out in the evolution of natural selection. Life, under the universal law of metabolism, undergoes a cycle of occurrence-development-decline-extinction, and this cycle repeats itself; and the spine, as the "pillar of life", is also inevitably governed by this law. Therefore, after the peak of young and middle-aged life, decay and degeneration are the inevitable processes that the spine in every individual life must go through. As the spine that always bears axial loads in the course of life, the intervertebral disc soft tissue, which is located between each bony vertebrae and acts as a "soft spring pad" that bears, buffers, and absorbs axial loads and impact forces, is the birthplace of degeneration. Due to the location of the intervertebral disc and the objective functional requirements, the spine is a special soft tissue in the human body that is unique in composition, shape, and physical properties.

[0003] In related technologies, spinal disc surgery often requires the placement of a fusion device in the intervertebral space to support the intervertebral space after the intervertebral disc tissue is removed, and then a steel plate (cervical spine surgery) or a nail rod (thoracolumbar spine surgery) is installed to prevent the fusion device from being dislocated or displaced until the upper and lower vertebrae are fused. However, during the use of the fusion device, the upper and lower installation heights of the intervertebral fusion device cannot be adjusted adaptively, and the spine at the upper and lower ends of the fusion device is pressed together, which can easily cause surface wear of the fusion device and affect the bony fusion between the upper and lower vertebrae. Summary of the invention

[0004] The present invention provides an intervertebral fusion device to solve the problem in the related art that during the use of the intervertebral fusion device, the upper and lower installation heights of the intervertebral fusion device cannot be adaptively adjusted, the spine at the upper and lower ends of the fusion device is pressed together, which easily causes surface wear of the fusion device and affects the bony fusion between the upper and lower vertebrae.

[0005] The present invention provides an intervertebral fusion device, which includes: an installation body, including a first prosthesis frame and a second prosthesis frame, the first prosthesis frame is located above the second prosthesis frame, both the first prosthesis frame and the second prosthesis frame have a vertebral connecting part, and the bottom end of the first prosthesis frame and the top end of the second prosthesis frame are matched in the horizontal direction; an adjustment device, including a fixing frame and an elastic adjustment mechanism, the bottom end of the fixing frame is arranged on the second prosthesis frame, the elastic adjustment mechanism is movably arranged on the fixing frame, and the first prosthesis frame has an abutment portion, which abuts against the top end of the elastic adjustment mechanism.

[0006] Furthermore, the fixed frame includes a first column and a second column, both of which extend vertically, and the elastic adjustment mechanism includes a first plate body, an elastic structure and a second plate body, the first end of the first plate body is vertically movably arranged on the first column, the second end of the first plate body is vertically movably arranged on the second column, the first end of the second plate body is fixedly arranged at the bottom end of the first column, the second end of the second plate body is fixedly arranged at the bottom end of the second column, and the elastic structure is arranged between the first plate body and the second plate body.

[0007] Further, the elastic structure includes a first spring column, a flexible ball and a second spring column, the first end of the first spring column is arranged on the first plate body, the second end of the first spring column is arranged on the flexible ball, the first end of the second spring column is arranged on the flexible ball, and the second end of the second spring column is movably arranged on the second plate body along the length direction of the second plate body.

[0008] Furthermore, there are two adjusting devices, and the two fixing frames are spaced apart along the length direction of the second prosthesis frame. The intervertebral fusion device also includes a first guide rod and a second guide rod. The first end of the first guide rod is connected to the first end of the first spring column of the first adjusting device, the second end of the first guide rod is connected to the first end of the first spring column of the second adjusting device, the first end of the second guide rod is connected to the second end of the second spring column of the first adjusting device, and the second end of the second guide rod is connected to the second end of the first spring column of the second adjusting device.

[0009] Furthermore, each flexible ball is provided with a first angle adjustment structure and a second angle adjustment structure, the first angle adjustment structure and the second angle adjustment structure are arranged relative to each other, the first angle adjustment structure is slidably arranged on the first guide rod, and the second angle adjustment structure is slidably arranged on the second guide rod.

[0010] Further, the first angle adjustment structure includes a first force-bearing rod, a first articulated seat and a first sliding frame, the first end of the first force-bearing rod is connected to the flexible ball, the second end of the first force-bearing rod is hingedly connected to the first articulated seat, the first end of the first sliding frame is rotatably set on the first articulated seat, and the second end of the first sliding frame is slidably set on the first guide rod; the second angle adjustment structure includes a second force-bearing rod, a second articulated seat and a second sliding frame, the first end of the second force-bearing rod is connected to the flexible ball, the second end of the second force-bearing rod is hingedly connected to the second articulated seat, the first end of the second sliding frame is rotatably set on the second articulated seat, and the second end of the second sliding frame is slidably set on the second guide rod.

[0011] Furthermore, a first limiting piece is provided in the middle of the first guide rod, and the first force-bearing rod cooperates with the first limiting piece; a second limiting piece is provided in the middle of the second guide rod, and the second force-bearing rod cooperates with the second limiting piece.

[0012] Furthermore, the intervertebral fusion device also includes a guide assembly, which includes a connecting ball, a connecting rod and a side ball. A limit groove is provided on the flexible ball, and the connecting ball is rotatably arranged in the limit groove. The first end of the connecting rod is connected to the connecting ball, and the second end of the connecting rod is connected to the side ball. A track ball groove is provided on the second prosthesis frame, and the side ball is arranged in the track ball groove.

[0013] Furthermore, a first mounting frame and a second mounting frame are spaced apart along the length direction of the first prosthesis frame, an abutment plate is arranged between the first mounting frame and the second mounting frame, and a rotating structure is arranged between the first end of the abutment plate and the first mounting frame and between the second end of the abutment plate and the second mounting frame, so that the abutment plate can be rotatably arranged between the first mounting frame and the second mounting frame.

[0014] Furthermore, the rotating structure includes a first gear, which is rotatably arranged in the first mounting frame, a first rotating block is arranged at the first end of the abutment plate, a first tooth groove is arranged on the first rotating block, a rotating shaft is arranged in the abutment plate, and the first rotating block is sleeved on the first end of the rotating shaft; the rotating structure also includes a second gear, which is rotatably arranged in the second mounting frame, a second rotating block is arranged at the second end of the abutment plate, a second tooth groove is arranged on the second rotating block, and the second rotating block is sleeved on the second end of the rotating shaft.

[0015] By applying the technical solution of the present invention, the intervertebral fusion device includes an installation body and an adjustment device, the first prosthesis frame of the installation body is located above the second prosthesis frame, and the first prosthesis frame and the second prosthesis frame are both provided with vertebral connecting parts, so that when the intervertebral fusion device is installed between two vertebrae, the first prosthesis frame is connected to the first vertebrae through the vertebral connecting part on the first prosthesis frame, and the second prosthesis frame is connected to the second vertebrae through the vertebral connecting part on the second prosthesis frame, and the first prosthesis frame and the second prosthesis frame are matched with upper limit positions in the horizontal direction, which can avoid relative movement between the first prosthesis frame and the second prosthesis frame in the horizontal direction, and further prevent the first prosthesis frame and the second prosthesis frame from dislocating on the vertebrae. In order to avoid the problem of the surface wear of the intervertebral fusion device caused by the first prosthesis frame and the second prosthesis frame being pressed and abutted when the first prosthesis frame is pressed downward by a vertebra during use, an adjustment device is arranged between the first prosthesis frame and the second prosthesis frame, the bottom end of the fixing frame of the adjustment device is arranged on the second prosthesis frame, the elastic adjustment mechanism is movably arranged on the fixing frame, and the first prosthesis frame is provided with an abutment portion. When the spine is subjected to force, the abutment portion on the first prosthesis frame abuts against the top of the elastic adjustment mechanism, so that the first prosthesis frame and the second prosthesis frame are buffered by the elastic adjustment mechanism, so that the first prosthesis frame and the second prosthesis frame are prevented from directly abutting against each other, causing the surface wear of the intervertebral fusion device. With the above structure, the first prosthesis frame can be buffered by the elastic adjustment structure, and the elastic adjustment structure can be movably arranged on the fixing frame, so as to improve the structural reliability of the elastic adjustment structure, and the intervertebral fusion device can also be used to ensure the normal force of the human spine, thereby improving the structural reliability of the intervertebral fusion device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the structure of an intervertebral fusion cage provided according to an embodiment of the present invention is shown;

[0018] Figure 2 An exploded view of an intervertebral fusion cage provided according to an embodiment of the present invention is shown;

[0019] Figure 3 A schematic diagram showing a second prosthesis frame of an intervertebral fusion device provided in accordance with an embodiment of the present invention is shown;

[0020] Figure 4 An exploded view of a second prosthesis frame provided according to an embodiment of the present invention is shown;

[0021] Figure 5 A schematic diagram of the structure of an adjusting device provided in an embodiment of the present invention is shown;

[0022] Figure 6 An exploded view of an adjusting device provided according to an embodiment of the present invention is shown;

[0023] Figure 7 Shows Figure 6 A partial enlarged view of the middle A;

[0024] Figure 8 A structural schematic diagram of a rotating structure provided according to an embodiment of the present invention is shown.

[0025] The above drawings include the following reference numerals:

[0026] 10. Installation body; 11. First prosthesis frame; 111. First installation frame; 112. Second installation frame; 113. Abutment plate; 12. Second prosthesis frame;

[0027] 20. Adjustment device; 21. Fixing frame; 211. First column; 212. Second column; 22. Elastic adjustment mechanism; 221. First plate; 222. Elastic structure; 2221. First spring column; 2222. Flexible ball; 2223. Second spring column; 223. Second plate;

[0028] 31. first guide rod; 311. first stopper; 32. second guide rod; 321. second stopper; 33. first angle adjustment structure; 331. first force rod; 332. first hinge seat; 333. first sliding frame; 34. second angle adjustment structure; 341. second force rod; 342. second hinge seat; 343. second sliding frame;

[0029] 41. guide assembly; 411. connecting ball; 412. connecting rod; 413. side ball; 42. limiting groove; 43. rotating structure; 431. first gear; 432. first rotating block; 433. rotating shaft; 434. second gear; 435. second rotating block;

[0030] 51. Implantation fixing hole; 52. Bone grafting window; 53. Docking groove; 54. Docking protrusion; 55. Slide groove; 56. Slide seat; 57. Tooth surface tooth; 58. Positioning opening; 59. Positioning block. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figures 3 to 7 As shown, an embodiment of the present invention provides an intervertebral fusion device, which includes a mounting body 10 and an adjustment device 20. The mounting body 10 includes a first prosthesis frame 11 and a second prosthesis frame 12. The first prosthesis frame 11 is located above the second prosthesis frame 12. The first prosthesis frame 11 and the second prosthesis frame 12 both have vertebral connecting parts. The bottom end of the first prosthesis frame 11 and the top end of the second prosthesis frame 12 are matched in the horizontal direction. The adjustment device 20 includes a fixing frame 21 and an elastic adjustment mechanism 22. The bottom end of the fixing frame 21 is arranged on the second prosthesis frame 12, and the elastic adjustment mechanism 22 is movably arranged on the fixing frame 21. The first prosthesis frame 11 has an abutting portion, which abuts against the top end of the elastic adjustment mechanism 22.

[0033] The intervertebral fusion device provided in this embodiment is applied, and the intervertebral fusion device includes a mounting body 10 and an adjustment device 20. The first prosthesis frame 11 of the mounting body 10 is located above the second prosthesis frame 12, and the first prosthesis frame 11 and the second prosthesis frame 12 are both provided with vertebral connecting parts, so that when the intervertebral fusion device is installed between two vertebrae, the first prosthesis frame 11 is connected to the first vertebrae through the vertebral connecting part on the first prosthesis frame 11, and the second prosthesis frame 12 is connected to the second vertebrae through the vertebral connecting part on the second prosthesis frame 12, and the first prosthesis frame 11 and the second prosthesis frame 12 are matched with upper limit positions in the horizontal direction, which can avoid relative movement between the first prosthesis frame 11 and the second prosthesis frame 12 in the horizontal direction, and further prevent the first prosthesis frame 11 and the second prosthesis frame 12 from dislocating on the vertebrae. In order to avoid the problem of surface wear of the intervertebral fusion device caused by the first prosthesis frame 11 and the second prosthesis frame 12 being pressed and abutted against each other when the first prosthesis frame 11 is pressed downward by a vertebra during use, an adjusting device 20 is arranged between the first prosthesis frame 11 and the second prosthesis frame 12, the bottom end of the fixing frame 21 of the adjusting device 20 is arranged on the second prosthesis frame 12, the elastic adjusting mechanism 22 is movably arranged on the fixing frame 21, and the first prosthesis frame 11 is provided with an abutting portion. When the spine is subjected to force, the abutting portion on the first prosthesis frame 11 abuts against the top end of the elastic adjusting mechanism 22, so that the first prosthesis frame 11 and the second prosthesis frame 12 are buffered by the elastic adjusting mechanism 22, so that direct abutment between the first prosthesis frame 11 and the second prosthesis frame 12 can be avoided, which may cause surface wear of the intervertebral fusion device. By adopting the above structure, the first prosthesis frame 11 can be buffered by the elastic adjustment structure, and the elastic adjustment structure can be movably arranged on the fixing frame 21, thereby improving the structural reliability of the elastic adjustment structure. The intervertebral fusion device can also be used to ensure the normal force of the human spine, thereby improving the structural reliability of the intervertebral fusion device.

[0034] It should be noted that the bottom end of the first prosthesis frame 11 and the top end of the second prosthesis frame 12 are matched with each other in the horizontal direction. In this embodiment, the distance of mutual movement in the horizontal direction is within a predetermined range.

[0035] Among them, Figure 2 As shown, a docking groove 53 is provided at the bottom end of the first prosthesis frame 11, and a docking protrusion 54 is provided at the top end of the second prosthesis frame 12. The docking protrusion 54 extends into the docking groove 53 so that the first prosthesis frame 11 and the second prosthesis frame 12 can be matched in the horizontal direction.

[0036] like Figure 5 and Figure 6As shown, the fixing frame 21 includes a first column 211 and a second column 212, both of which extend vertically. The elastic adjustment mechanism 22 includes a first plate 221, an elastic structure 222 and a second plate 223. The first end of the first plate 221 is vertically movably arranged on the first column 211, the second end of the first plate 221 is vertically movably arranged on the second column 212, the first end of the second plate 223 is fixedly arranged at the bottom end of the first column 211, the second end of the second plate 223 is fixedly arranged at the bottom end of the second column 212, and the elastic structure 222 is arranged between the first plate 221 and the second plate 223. With the above structure, the first column 211 and the second column 212 both extend vertically, and the bottom ends of the first column 211 and the second column 212 are both arranged on the second prosthesis frame 12, the first end of the first plate 221 of the elastic adjustment mechanism 22 is movably arranged on the first column 211 in the vertical direction, the second end of the first plate 221 is movably arranged on the second column 212 in the vertical direction, the first end of the second plate 223 is fixedly arranged on the bottom end of the first column 211, the second end of the second plate 223 is fixedly arranged on the bottom end of the second column 212, an elastic structure 222 is arranged between the first plate 221 and the second plate 223, and the first plate 221 can be movably arranged on the first column 211 in the vertical direction. The second plate 223 is fixedly arranged between the first column 211 and the second column 212 at the bottom, so that the first plate 221 can be movably arranged, the second plate 223 is fixedly arranged, and the abutting portion of the first prosthesis frame 11 can abut against the first plate 221, so that the first plate 221 moves downward, and the elastic structure 222 is compressed by the first plate 221, so that the elastic structure 222 can play a buffering role when the first prosthesis frame 11 and the second prosthesis frame 12 are pressed together, so that the elastic structure 222 can be movably arranged between the first column 211 and the second column 212, thereby improving the structural reliability of the elastic structure 222.

[0037] like Figure 5 and Figure 6As shown, the elastic structure 222 includes a first spring column 2221, a flexible ball 2222 and a second spring column 2223. The first end of the first spring column 2221 is arranged on the first plate body 221, the second end of the first spring column 2221 is arranged on the flexible ball 2222, the first end of the second spring column 2223 is arranged on the flexible ball 2222, and the second end of the second spring column 2223 is movably arranged on the second plate body 223 along the length direction of the second plate body 223. With the above structure, the first end of the first spring column 2221 is arranged on the first plate body 221, the second end of the first spring column 2221 is arranged on the flexible ball 2222, the first end of the second spring column 2223 is arranged on the flexible ball 2222, and the second end of the second spring column 2223 is movably arranged on the second plate body 223 along the length direction of the second plate body 223. The first spring column 2221 can be compressed when the first plate body 221 moves downward, playing a buffering role. The first spring column 2221 can apply force to the flexible ball 2222 to deform the flexible ball 2222. After the deformation, the flexible ball 2222 will also move downward with the downward movement of the first plate body 221 and the compression of the first spring column 2221 so that the flexible ball 2222 can also move downward and deform. The flexible ball 2222 can compress the second spring column 2223. Since the second end of the second spring column 2223 moves along the second plate body 22 3 is movably arranged on the second plate body 223 in the length direction of 3, so that when the second spring column 2223 performs compression buffering, the second end of the second spring column 2223 can move slightly in the length direction of the second plate body 223 under the action of the deformation of the flexible ball 2222. In this way, the second spring column 2223 can not only play a buffering role, but also can use the second spring column 2223 to decompose the pressing force of the first prosthesis frame 11, so as to avoid directly transmitting the force of the first prosthesis frame 11 to the second prosthesis frame 12, so that when the pressing force between the vertebral bodies is received, no fastening support structure is formed, but the second spring column 2223 is slightly moved left and right on the second plate body 223 to reduce the damage of the pressing force to the overall device, so as to avoid the misalignment of the overall internal elastic adjustment mechanism 22 during subsequent long-term use, resulting in reduced performance, which can enhance the buffering effect of the elastic structure 222.

[0038] It should be noted that the second plate 223 has a slide groove 55 arranged along its length direction on one side facing the first plate 221 . The intervertebral fusion device also includes a slide seat 56 , which is slidably matched with the slide groove 55 . The second end of the second spring column 2223 is fixedly arranged on the slide seat 56 .

[0039] like Figure 5 and Figure 6As shown, there are two adjusting devices 20, and the two fixing frames 21 are spaced apart along the length direction of the second prosthesis frame 12. The intervertebral fusion device also includes a first guide rod 31 and a second guide rod 32. The first end of the first guide rod 31 is connected to the first end of the first spring column 2221 of the first adjusting device 20, the second end of the first guide rod 31 is connected to the first end of the first spring column 2221 of the second adjusting device 20, the first end of the second guide rod 32 is connected to the second end of the second spring column 2223 of the first adjusting device 20, and the second end of the second guide rod 32 is connected to the second end of the first spring column 2221 of the second adjusting device 20. With the above structure, two adjusting devices 20 are provided, and two fixing frames 21 are arranged at intervals along the length direction of the second prosthesis frame 12. The first end of the first guide rod 31 is connected to the first end of the first spring column 2221 of the first adjusting device 20, the second end of the first guide rod 31 is connected to the first end of the first spring column 2221 of the second adjusting device 20, the first end of the second guide rod 32 is connected to the second end of the second spring column 2223 of the first adjusting device 20, and the second end of the second guide rod 32 is connected to the second end of the first spring column 2221 of the second adjusting device 20. In this way, under the action of the first guide rod 31, the first guide rod 31 can be moved downward with the compression of the first spring column 2221, and the first spring column 2221 of the second adjusting device 20 can be driven to move downward under the action of the first guide rod 31. Then, if the abutting portion of the first prosthesis frame 11 abuts against the first plate 221 of the first adjusting device 20 and is pressed, the abutting force is directly transmitted to the first spring columns 2221 of the two adjusting devices 20 under the action of the first guide rod 31, which can further improve the buffering effect of the adjusting device 20. In addition, the second guide rod 32 is arranged between the second ends of the two second spring columns 2223, so that the second spring column 2223 can play a guiding role when moving in the length direction of the second plate body 223, and then when the first prosthesis frame 11 and the second prosthesis frame 12 are not subjected to the compression force, when the second spring column 2223 is reset, the second guide rod 32 can play a guiding and resetting role and remain in a vertical state, and the flexible ball 2222 can play a resetting role under the action of the first spring column 2221 and the second spring column 2223, ensuring that the flexible ball 2222 can be reset, avoiding deformation of the flexible ball 2222 and being unable to be reset, thereby improving the stability and long-term service life of the adjustment device 20.

[0040] like Figure 6 and Figure 7As shown, each flexible ball 2222 is provided with a first angle adjustment structure 33 and a second angle adjustment structure 34, the first angle adjustment structure 33 and the second angle adjustment structure 34 are arranged oppositely, the first angle adjustment structure 33 is slidably arranged on the first guide rod 31, and the second angle adjustment structure 34 is slidably arranged on the second guide rod 32. With the above structure, by arranging the first angle adjustment structure 33 and the second angle adjustment structure 34 oppositely, the first angle adjustment structure 33 is slidably arranged on the first guide rod 31, and the second angle adjustment structure 34 is slidably arranged on the second guide rod 32, so that the resetting effect of the flexible ball 2222 can be further improved under the action of the first angle adjustment structure 33 and the second angle adjustment structure 34.

[0041] like Figure 6 and Figure 7As shown, the first angle adjustment structure 33 includes a first force-bearing rod 331, a first hinged seat 332 and a first sliding frame 333. The first end of the first force-bearing rod 331 is connected to the flexible ball 2222, the second end of the first force-bearing rod 331 is hingedly connected to the first hinged seat 332, the first end of the first sliding frame 333 is rotatably set on the first hinged seat 332, and the second end of the first sliding frame 333 is slidably set on the first guide rod 31. The second angle adjustment structure 34 includes a second force-bearing rod 341, a second hinged seat 342 and a second sliding frame 343. The first end of the second force-bearing rod 341 is connected to the flexible ball 2222, the second end of the second force-bearing rod 341 is hingedly connected to the second hinged seat 342, the first end of the second sliding frame 343 is rotatably set on the second hinged seat 342, and the second end of the second sliding frame 343 is slidably set on the second guide rod 32. With the above structure, the first force-bearing rod 331 and the second force-bearing rod 341 are both arranged on the side of the flexible ball 2222. Since the first angle adjustment structure 33 and the second angle adjustment structure 34 are arranged relative to each other, the first end of the first force-bearing rod 331 is connected to the side of the flexible ball 2222, the first end of the second force-bearing rod 341 is connected to the side of the flexible ball 2222, the second end of the first force-bearing rod 331 and the second end of the second force-bearing rod 341 both extend in a direction away from the flexible ball 2222, and the first force-bearing rod 331 and the second force-bearing rod 341 are arranged relative to each other, and the first force-bearing rod 331 and the first hinged joint are connected to each other. The seat 332 is hinged, the first end of the first sliding frame 333 is hinged to the first hinge seat 332, the second end of the first sliding frame 333 is slidably set on the first guide rod 31, the second force-bearing rod 341 is hinged to the second hinge seat 342, the first end of the second sliding frame 343 is hinged to the second hinge seat 342, and the second end of the second sliding frame 343 is slidably set on the second guide rod 32, so that it can play an adjustment role under the action of the first angle adjustment structure 33 and the second angle adjustment structure 34, and can also play a role in resetting the elastic adjustment mechanism 22.

[0042] It should be noted that when the first plate body 221 moves downward, the first spring column 2221 is compressed, and the first spring column 2221 contracts to exert force on the flexible ball 2222. The flexible ball 2222 can be deformed and move downward along the fixed frame 21. The deformation of the flexible ball 2222 causes the second spring column 2223 to contract, and under the action of the first guide rod 31, the second first spring column 2221 can be controlled to contract, driving the second flexible ball 2222 to deform, and the second spring column 2223 moves slightly in the length direction of the second plate body 223, and the second second spring column 2223 can be compressed and moved together with the first second spring column 2223. At this time, the first force-bearing rod 331 moves, so that the first force-bearing rod 331 is hinged with the first hinge seat 332, so that there is a first angle between the first force-bearing rod 331 and the first sliding frame 333, so that when the flexible ball 2222 is deformed, the first force-bearing rod 331 can drive the first sliding frame 333 to move on the first guide rod 31, and the second force-bearing rod 341 moves, so that the second force-bearing rod 341 is hinged with the second hinge seat 342, so that the angle between the second force-bearing rod 341 and the second sliding frame 343 is an obtuse angle, so that when the flexible ball 2222 is deformed, the second force-bearing rod 341 can drive the second sliding frame 343 to move on the second guide rod 32.The first spring column 2221 and the second spring column 2223 are reset and extended when the adjusting device 20 needs to be reset. The first spring column 2221 is extended to drive the first guide rod 31 to rise. The first guide rod 31 moves upward so that there is no angle between the first sliding frame 333 and the first force-bearing rod 331. Then, as the first guide rod 31 continues to move upward, there is a second angle between the first sliding frame 333 and the first force-bearing rod 331, so that the second sliding frame 343 can drive the first force-bearing rod 331 to be stressed while the first guide rod 31 slides, thereby facilitating the resetting of the tension on the flexible ball 2222. The second force-bearing rod 341 is symmetrically arranged with the first force-bearing rod 331. In this way, the flexible ball 2222 can be reset under the joint action of the first guide rod 31, the first force-bearing rod 331, the first hinge seat 332 and the first sliding frame 333. 22 is reset, and the flexible ball 2222 can be reset under the action of the second spring column 2223, the second guide rod 32, the second force-bearing rod 341, the second hinge seat 342 and the second sliding frame 343, so that the first guide rod 31, the two first spring columns 2221, the flexible ball 2222, the two second spring columns 2223 and the second guide rod 32 form a plane, which is convenient for resetting the flexible ball 2222, thereby improving the service life of the adjusting device 20 and ensuring that the adjusting device 20 can be reset. The overall structure is convenient for adaptively adjusting the upper and lower installation heights of the intervertebral fusion device and reducing the gap between the cones. As the patient moves, the upper and lower ends of the first prosthesis frame 11 and the second prosthesis frame 12 are always pressed together, reducing the wear on the surfaces of the first prosthesis frame 11 and the second prosthesis frame 12, thereby ensuring good bony fusion between the upper and lower vertebral bodies.

[0043] The upper and lower ends of the flexible ball 2222 are both provided with first threaded connection ends, the first end of the first spring column can be threadedly connected to the first threaded connection end, and the first force-bearing rod is interference-fitted with the mounting hole of the flexible ball.

[0044] like Figure 7 As shown, the first guide rod 31 is provided with a first stopper 311 in the middle, and the first force bearing rod 331 is limitedly matched with the first stopper 311. With the above structure, the first guide rod 31 is provided with a first stopper 311 in the middle, and the first sliding frame 333 can be limitedly matched with the first stopper 311.

[0045] like Figure 6 As shown, the second guide rod 32 is provided with a second stopper 321 in the middle, and the second force bearing rod 341 is limitedly matched with the second stopper 321. With the above structure, the second guide rod 32 is provided with a second stopper 321 in the middle, and the second sliding frame 343 can be limitedly matched with the second stopper 321.

[0046] It should be noted that the first position-limiting member 311 and the second position-limiting member 321 may be buffer pads, which can not only perform position-limiting cooperation but also play a role in buffering the force.

[0047] like Figure 1 and Figure 2 As shown, bone grafting windows 52 are provided on both sides of the first prosthesis frame 11 and the second prosthesis frame 12, which are convenient for placing artificial bones in the bone grafting windows 52 to facilitate bone ingrowth. Implantation fixing holes 51 are provided on the surfaces of the first prosthesis frame 11 and the second prosthesis frame 12, which are convenient for using tools to reach into the implantation fixing holes 51 and then install the first prosthesis frame 11 and the second prosthesis frame 12 between the two vertebrae; a positioning hole 58 is provided at the bottom end of the first prosthesis frame 11, and a positioning block 59 is provided on the upper surface of the second prosthesis frame 12.

[0048] like Figure 5 As shown, the intervertebral fusion device further includes a guide assembly 41, which includes a connecting ball 411, a connecting rod 412 and a side ball 413. A limit groove 42 is provided on the flexible ball 2222, and the connecting ball 411 is rotatably provided in the limit groove 42. The first end of the connecting rod 412 is connected to the connecting ball 411, and the second end of the connecting rod 412 is connected to the side ball 413. A track ball groove is provided on the second prosthesis frame 12, and the side ball 413 is provided in the track ball groove. With the above structure, by providing the connecting ball 411, the connecting rod 412 and the side ball 413, the connecting ball 411 is rotatably provided in the limit groove 42 of the flexible ball 2222, and the side ball 413 can rotate in the track ball groove, so that the flexible ball 2222 drives the connecting ball 411 to move, thereby playing a role of movement limitation.

[0049] It should be noted that, with the cooperation of the adjustment device 20, when the flexible ball 2222 is pressed at the upper and lower ends, it will drive the first force-bearing rod 331 to drive the first hinge seat 332 to adjust the angle. When the first hinge seat 332 is adjusted to the limit point, it will drive the first sliding frame 333 to slide outside the first guide rod 31 again until it is restricted by the cooperation of the first limit member 311. With the cooperation of the connecting ball 411, the connecting rod 412 and the side ball 413, it is convenient for the sliding seat 56 to slide left and right in the sliding groove 55, and synchronously make The side ball 413 rotates inside the trackball groove, thereby driving the connecting ball 411 and the connecting rod 412 to operate synchronously, so that the side ball 413 performs trajectory adaptation adjustment inside the trackball groove. The overall structure is convenient for adaptive adjustment of the front and rear installation height of the intervertebral fusion device, reducing the gap between the spinal vertebrae. As the patient moves, the upper and lower ends of the first prosthesis frame 11 and the second prosthesis frame 12 are always pressed together, reducing the wear on the surfaces of the first prosthesis frame 11 and the second prosthesis frame 12, thereby ensuring good bony fusion between the upper and lower vertebrae.

[0050] like Figure 1 , Figure 2 as well as Figure 8 As shown, the first mounting frame 111 and the second mounting frame 112 are arranged at intervals along the length direction of the first prosthesis frame 11, and an abutment plate 113 is arranged between the first mounting frame 111 and the second mounting frame 112. A rotating structure 43 is arranged between the first end of the abutment plate 113 and the first mounting frame 111 and between the second end of the abutment plate 113 and the second mounting frame 112, so that the abutment plate 113 can be rotatably arranged between the first mounting frame 111 and the second mounting frame 112. With the above structure, the abutment plate 113 is arranged between the first mounting frame 111 and the second mounting frame 112, and the abutment plate 113 can be rotated by the rotating structure 43 to rotate, so that the abutment plate 113 can abut and cooperate with the vertebral body, so that the first prosthesis frame 11 can be installed and cooperated with the vertebral body.

[0051] It should be noted that the first mounting frame 111 and the second mounting frame 112 are also provided on the second prosthesis frame 12, and an abutment plate 113 and a rotating structure 43 are also provided between the first mounting frame 111 and the second mounting frame 112 to ensure that the first prosthesis frame 11 and the second prosthesis frame 12 are arranged on the vertebral body.

[0052] like Figure 8As shown, the rotating structure 43 includes a first gear 431, which is rotatably arranged in the first mounting frame 111, a first rotating block 432 is arranged at the first end of the abutment plate 113, and a first tooth groove meshing with the first gear 431 is arranged on the first rotating block 432, a rotating shaft 433 is arranged in the abutment plate 113, and the first rotating block 432 is sleeved on the first end of the rotating shaft 433, and the rotating structure 43 also includes a second gear 434, which is rotatably arranged in the second mounting frame 112, a second rotating block 435 is arranged at the second end of the abutment plate 113, and a second tooth groove meshing with the second gear 434 is arranged on the second rotating block 435, and the second rotating block 435 is sleeved on the second end of the rotating shaft 433. With the above structure, a first gear 431 is arranged in the first mounting frame 111, a second gear 434 is arranged in the second mounting frame 112, a rotating shaft 433 is arranged in the abutment plate 113, a first end of the rotating shaft 433 is passed through the first rotating block 432, a first tooth groove is arranged on the first rotating block 432, the first tooth groove can mesh with the first gear 431, a second end of the rotating shaft 433 is passed through the second rotating block 435, a second tooth groove is arranged on the second rotating block 435, the second tooth groove can mesh with the second gear 434, so that the rotating shaft 433 can rotate and drive the abutment plate 113 to rotate, and abut with the vertebral body.

[0053] It should be noted that after the first prosthesis frame 11 and the second prosthesis frame 12 are respectively installed between the vertebral joints, the first prosthesis frame 11 and the second prosthesis frame 12 correspond to the running-in surfaces of the upper and lower joints respectively, and then the first gear 431 is finely rotated and adjusted inside the first rotating block 432. After the rotation adjustment, the abutment plate 113 is synchronously driven by the rotating shaft 433 to drive the shaping soft rubber insert on the abutment plate 113 to work, so that the shaping insert is fit and fixed on the side surface of the vertebral joint, so that when the vertebral joints develop and grow in the subsequent period, the sides of the growing vertebral joints can be shaped, while ensuring that the vertebral joints will not be dislocated, avoiding deviation of the overall device during use.

[0054] Specifically, when the abutment plate 113 contacts the bone, a locked state is achieved.

[0055] Among them, a plastic soft rubber insert is arranged on the surface of the abutment plate 113, and the rotating shaft 433 rotates under the action of the first gear 431, the second gear 434, the first rotating block 432 and the second rotating block 435 to drive the abutment plate 113 to rotate, thereby driving the shaping soft rubber insert to operate, so that the shaping soft rubber insert is fitted and fixed on the side surface of the vertebral body, so that when the vertebral joints develop and grow in the subsequent process, the sides of the grown vertebral joints can be shaped, and at the same time, the vertebral joints can be ensured not to be dislocated, so as to avoid deviation of the whole device during use, causing the gap between the vertebral joints of the spine to be pressed against the upper and lower ends of the first prosthesis frame 11 and the second prosthesis frame 12 at all times as the patient moves, causing the surfaces of the first prosthesis frame 11 and the second prosthesis frame 12 to be worn, thereby affecting the efficiency of bony fusion between the upper and lower vertebrae.

[0056] It should be noted that if Figure 1 As shown, both the first prosthesis frame 11 and the second prosthesis frame 12 are provided with tooth surface teeth 57 , which extend into the vertebral body and constitute the vertebral body connecting portion.

[0057] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0058] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0059] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0060] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0061] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intervertebral fusion cage, characterized in that: The intervertebral fusion cage comprises: The mounting body (10) comprises a first prosthesis frame (11) and a second prosthesis frame (12), wherein the first prosthesis frame (11) is located above the second prosthesis frame (12), and both the first prosthesis frame (11) and the second prosthesis frame (12) have vertebral body connection portions, and the bottom end of the first prosthesis frame (11) and the top end of the second prosthesis frame (12) are engaged with each other in a horizontal limit direction; The adjusting device (20) comprises a fixing frame (21) and an elastic adjusting mechanism (22), wherein the bottom end of the fixing frame (21) is arranged on the second prosthesis frame (12), the elastic adjusting mechanism (22) is movably arranged on the fixing frame (21), and the first prosthesis frame (11) has an abutting portion, and the abutting portion abuts against the top end of the elastic adjusting mechanism (22); The fixing frame (21) comprises a first column (211) and a second column (212), the first column (211) and the second column (212) both extending vertically, the elastic adjustment mechanism (22) comprising a first plate (221), an elastic structure (222) and a second plate (223), the first end of the first plate (221) being movably arranged on the first column (211) in the vertical direction, the second end of the first plate (221) being movably arranged on the second column (212) in the vertical direction, the first end of the second plate (223) being fixedly arranged at the bottom end of the first column (211), the second end of the second plate (223) being fixedly arranged at the bottom end of the second column (212), and the elastic structure (222) being arranged between the first plate (221) and the second plate (223); The elastic structure (222) comprises a first spring column (2221), a flexible ball (2222) and a second spring column (2223); the first end of the first spring column (2221) is arranged on the first plate body (221); the second end of the first spring column (2221) is arranged on the flexible ball (2222); the first end of the second spring column (2223) is arranged on the flexible ball (2222); and the second end of the second spring column (2223) is movably arranged on the second plate body (223) along the length direction of the second plate body (223).

2. The intervertebral fusion cage according to claim 1, characterized in that: There are two adjusting devices (20), and the two fixing frames (21) are arranged at intervals along the length direction of the second prosthesis frame (12). The intervertebral fusion device also includes a first guide rod (31) and a second guide rod (32), wherein the first end of the first guide rod (31) is connected to the first end of the first spring column (2221) of the first adjusting device (20), the second end of the first guide rod (31) is connected to the first end of the first spring column (2221) of the second adjusting device (20), the first end of the second guide rod (32) is connected to the second end of the second spring column (2223) of the first adjusting device (20), and the second end of the second guide rod (32) is connected to the second end of the first spring column (2221) of the second adjusting device (20).

3. The intervertebral fusion cage according to claim 2, characterized in that: Each of the flexible balls (2222) is provided with a first angle adjustment structure (33) and a second angle adjustment structure (34); the first angle adjustment structure (33) and the second angle adjustment structure (34) are arranged relative to each other; the first angle adjustment structure (33) is slidably arranged on the first guide rod (31); and the second angle adjustment structure (34) is slidably arranged on the second guide rod (32).

4. The intervertebral fusion cage according to claim 3, characterized in that: The first angle adjustment structure (33) comprises a first force-bearing rod (331), a first hinge seat (332) and a first sliding frame (333), wherein the first end of the first force-bearing rod (331) is connected to the flexible ball (2222), the second end of the first force-bearing rod (331) is hingedly connected to the first hinge seat (332), the first end of the first sliding frame (333) is rotatably arranged on the first hinge seat (332), and the second end of the first sliding frame (333) is slidably arranged on the first guide rod (31); The second angle adjustment structure (34) comprises a second force-bearing rod (341), a second hinge seat (342) and a second sliding frame (343); the first end of the second force-bearing rod (341) is connected to the flexible ball (2222); the second end of the second force-bearing rod (341) is hingedly connected to the second hinge seat (342); the first end of the second sliding frame (343) is rotatably arranged on the second hinge seat (342); and the second end of the second sliding frame (343) is slidably arranged on the second guide rod (32).

5. The intervertebral fusion cage according to claim 4, characterized in that: A first limiting member (311) is provided in the middle of the first guide rod (31), and the first force-bearing rod (331) is in limiting cooperation with the first limiting member (311); A second position-limiting member (321) is provided in the middle of the second guide rod (32), and the second force-bearing rod (341) is in position-limiting cooperation with the second position-limiting member (321).

6. The intervertebral fusion cage according to claim 4, characterized in that: The intervertebral fusion device further comprises a guide assembly (41), the guide assembly (41) comprising a connecting ball (411), a connecting rod (412) and a side ball (413); a limit groove (42) is provided on the flexible ball (2222); the connecting ball (411) is rotatably arranged in the limit groove (42); a first end of the connecting rod (412) is connected to the connecting ball (411); a second end of the connecting rod (412) is connected to the side ball (413); a track ball groove is provided on the second prosthesis frame (12); and the side ball (413) is arranged in the track ball groove.

7. The intervertebral fusion cage according to claim 1, characterized in that: A first mounting frame (111) and a second mounting frame (112) are arranged on the first prosthesis frame (11) at intervals along the length direction thereof, an abutment plate (113) is arranged between the first mounting frame (111) and the second mounting frame (112), and a rotating structure (43) is arranged between the first end of the abutment plate (113) and the first mounting frame (111) and between the second end of the abutment plate (113) and the second mounting frame (112), so that the abutment plate (113) can be rotatably arranged between the first mounting frame (111) and the second mounting frame (112).

8. The intervertebral fusion cage according to claim 7, characterized in that: The rotating structure (43) comprises a first gear (431), the first gear (431) being rotatably arranged in the first mounting frame (111), a first rotating block (432) being arranged at the first end of the abutment plate (113), a first tooth groove being arranged on the first rotating block (432) being meshed with the first gear (431), a rotating shaft (433) being arranged in the abutment plate (113), and the first rotating block (432) being sleeved on the first end of the rotating shaft (433); The rotating structure (43) further comprises a second gear (434), the second gear (434) being rotatably arranged in the second mounting frame (112), a second rotating block (435) being arranged at the second end of the abutment plate (113), a second tooth groove being arranged on the second rotating block (435) being meshed with the second gear (434), and the second rotating block (435) being sleeved on the second end of the rotating shaft (433).

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