Microporous structure of lumbar interbody fusion cage

Abstract

The microporous structure of the lumbar interbody fusion cage comprises a fusion cage body, an opening groove is formed in the fusion cage body, a threaded through hole is formed in the left side face of the fusion cage body, and a fixing disc is installed at the opening of the left side face of the threaded through hole. And a connecting cylinder is fixedly connected to the right side surface of the fixed disc. According to the microporous structure of the lumbar interbody fusion cage, by arranging an adjusting structure, a limiting block drives a rotating rod and a rotating turntable to rotate, when the rotating turntable rotates, a limiting sliding groove is driven to shift, and at the moment, the inner wall of the limiting sliding groove pushes a positioning sliding rod to slide in the limiting sliding groove; the positioning sliding rod further pushes the positioning column to slide in the positioning plate, the positioning plate is pushed into the positioning groove, the fusion cage body is gradually pushed for supporting, the supporting height of the fusion cage body is increased, and other devices are not needed for fixing.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a microporous structure of a lumbar intervertebral fusion device. Background Art

[0002] Lumbar degenerative disc herniation, segmental instability, disc-related diseases, traumatic lumbar spondylolisthesis, lumbar instability causing lower back pain and limb movement and sensory disorders, those who do not respond to non-surgical treatment generally require lumbar fixation and fusion. This technology has developed into one of the basic procedures in spinal surgery today. In recent years, lumbar interbody fusion devices have been widely used in lumbar fusion. With the development of spinal biomechanics and the widespread application of lumbar interbody fusion, lumbar interbody fusion devices have developed rapidly and there are many types. At the same time, interbody fusion devices with better adaptability to the end faces of the vertebral body are usually processed through 3D printing technology to ensure that the connecting surface of the interbody fusion device and the vertebral body can match to the greatest extent.

[0003] According to an intervertebral fusion device mentioned in Chinese Utility Model 202120408486.8, the intervertebral fusion device is used by separately processing the fusion body and the vertebral end face matching parts by splitting the parts. When producing the intervertebral fusion device, it is only necessary to make the vertebral end face matching parts through 3D printing, and then install the vertebral end face matching parts and the fusion body. However, the intervertebral fusion device is not convenient for supporting and expanding the height of the intervertebral fusion device during use, and it needs to be fixed with the help of other devices, which is not conducive to the use of the fusion device. Therefore, it is necessary to propose a microporous structure of a lumbar intervertebral fusion device to solve the above-mentioned problems. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a microporous structure of a lumbar intervertebral fusion cage which facilitates the support of the intervertebral fusion cage and increases the height.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a microporous structure of a lumbar intervertebral fusion device, comprising a device body, an open groove is arranged inside the device body, a threaded through hole is opened at the left side of the device body, a fixing plate is installed at the opening of the left side of the threaded through hole, a connecting tube is fixedly connected at the right side of the fixing plate, an adjustment structure is movably installed inside the connecting tube, a stabilizing plate is fixedly installed inside the connecting tube, and a rotating turntable is movably installed on the left side of the stabilizing plate;

[0006] The adjustment structure includes a limiting slide groove, a limiting slide groove is provided on the front side of the rotating turntable, a positioning slide rod is slidably installed inside the limiting slide groove, a positioning column is connected to one end of the positioning slide rod, a positioning plate is fixedly connected to one end of the positioning column, a limiting plate is fixedly installed inside the stabilizing disk, and the positioning column is slidably installed inside the limiting plate.

[0007] Furthermore, a positioning groove is provided on the inner wall of the fusion device body, the positioning plate and the positioning groove are adapted to each other, and the positioning groove is slidably installed inside the positioning groove.

[0008] Furthermore, a thread that matches the threaded through hole is disposed on the outside of the connecting tube near the left end, and a limiting block is clamped on the left side of the fixing plate.

[0009] Furthermore, a rotating rod is fixedly connected to the right side surface of the limit block, and the rotating rod passes through the rotating turntable and the stabilizing plate. The rotating turntable is fixedly connected to the outside of the rotating rod, and the stabilizing plate is sleeved on the outside of the rotating rod.

[0010] Furthermore, a clamping groove adapted to the limit block is provided on the left side surface of the fixing plate, and fixing teeth are provided on the outside of the fusion device body.

[0011] Furthermore, a limiting slider is slidably installed inside the limiting plate, and a positioning column is fixedly connected to one side of the limiting slider.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] The microporous structure of the lumbar intervertebral fusion device is provided with an adjustment structure. When in use, the limit block is manually rotated, and the limit block will drive the rotating rod and the rotating turntable to rotate. When the rotating turntable rotates, it will drive the limit slide to shift its position. At this time, the inner wall of the limit slide will push the positioning slide to slide inside the limit slide. At this time, the inner wall of the limit slide will push the positioning slide to slide inside the limit slide. Since the limit slider is limitedly slidably installed inside the positioning plate, the positioning plate is pushed into the inside of the positioning groove, and the fusion device body is gradually pushed for support, thereby expanding the support height of the fusion device body. There is no need to use other devices for fixing, which is convenient for the use of the fusion device body and can effectively improve the use of the fusion device body. It solves the problem that the existing intervertebral fusion device is inconvenient to support and expand the height, and needs to be fixed with the help of other devices, which is not conducive to the use of the fusion device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front cross-sectional view of the intervertebral fusion device structure of the utility model;

[0015] Figure 2 This is a front cross-sectional view of the connecting tube structure of the utility model;

[0016] Figure 3 This is a front view of the adjustment structure of the utility model;

[0017] Figure 4 This is the rear view of the adjustment structure of the utility model.

[0018] In the figure: 1. fusion device body; 2. opening groove; 3. fixing plate; 4. limiting block; 5. connecting tube; 6. positioning groove; 7. threaded through hole; 8. fixing tooth; 9. rotating rod; 10. rotating turntable; 11. stabilizing plate; 12. adjustment structure; 121. limiting slide groove; 122. positioning slide rod; 123. limiting plate; 124. positioning column; 125. positioning plate; 126. limiting slider. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 A microporous structure of a lumbar intervertebral fusion device in this embodiment includes a fusion device body 1, an opening groove 2 is arranged inside the fusion device body 1, a threaded through hole 7 is opened on the left side of the fusion device body 1, a fixing plate 3 is installed at the opening of the left side of the threaded through hole 7, a connecting tube 5 is fixedly connected to the right side of the fixing plate 3, an adjustment structure 12 is movably installed inside the connecting tube 5, a stabilizing plate 11 is fixedly installed inside the connecting tube 5, and a rotating turntable 10 is movably installed on the left side of the stabilizing plate 11;

[0021] The adjustment structure 12 includes a limiting slide groove 121. The limiting slide groove 121 is opened on the front side of the rotating turntable 10. A positioning slide rod 122 is slidably installed inside the limiting slide groove 121. A positioning column 124 is connected to one end of the positioning slide rod 122. A positioning plate 125 is fixedly connected to one end of the positioning column 124. A limiting plate 123 is fixedly installed inside the stabilizing disk 11, and the positioning column 124 is slidably installed inside the limiting plate 123.

[0022] In specific implementation, by setting the adjustment structure 12, when in use, by manually rotating the limit block 4, the limit block 4 will drive the rotating rod 9 and the rotating turntable 10 to rotate, and when the rotating turntable 10 rotates, it will drive the limit slide 121 to shift its position. At this time, the inner wall of the limit slide 121 will push the positioning slide bar 122 to slide inside the limit slide 121. At this time, the inner wall of the limit slide 121 will push the positioning slide bar 122 to slide inside the limit slide 121. Since the limit slider 126 is limitedly slidably installed inside the positioning plate 125, the positioning plate is now 125 is pushed into the interior of the positioning groove 6, and gradually pushes the fusion device body 1 for support, thereby expanding the support height of the fusion device body 1. It does not need to be fixed with the help of other devices, which is convenient for the use of the fusion device body 1 and can effectively improve the use of the fusion device body 1. When in use, the limiting block 4 is limited by the fixing plate 3, which can effectively avoid the situation where the support of the fusion device body 1 is unstable due to the unstable positioning of the adjustment structure 12, thereby solving the problem that the existing intervertebral fusion device is inconvenient to support and expand the height, and needs to be fixed with the help of other devices, which is not conducive to the use of the fusion device.

[0023] The fusion device body 1 is formed by 3D printing and can effectively fit the patient's lumbar spine to repair the intervertebral space, while the adjustment structure 12 is composed of small parts produced externally. When in use, the adjustment structure 12 and the fusion device body 1 can be assembled in time and put into use, and the fixed teeth 8 can further increase the fit stability between the fusion device body 1 and the patient's lumbar spine.

[0024] When implementing, follow these steps:

[0025] 1) First, assemble the fusion device body 1 and the adjustment structure 12 in a timely manner;

[0026] 2) Then, by manually rotating the limit block 4, the limit block 4 will drive the rotating rod 9 and the rotating turntable 10 to rotate, and when the rotating turntable 10 rotates, the limit slide slot 121 will be driven to shift its position;

[0027] 3) Push the positioning slide bar 122 to slide inside the limiting slide groove 121 through the inner wall of the limiting slide groove 121;

[0028] 4) Finally, the positioning slide bar 122 further pushes the positioning column 124 to slide inside the positioning plate 125, so as to push the positioning plate 125 into the inside of the positioning groove 6, and gradually push the fusion body 1 for support, thereby expanding the support height of the fusion body 1.

[0029] In summary, the microporous structure of the lumbar intervertebral fusion device is provided with an adjustment structure 12. When in use, the limit block 4 is manually rotated, and the limit block 4 will drive the rotating rod 9 and the rotating turntable 10 to rotate. When the rotating turntable 10 rotates, it will drive the limit slide groove 121 to shift its position. At this time, the inner wall of the limit slide groove 121 will push the positioning slide rod 122 to slide inside the limit slide groove 121. Since the limit slider 126 is limitedly slidably installed inside the positioning plate 125, the positioning slide rod 122 further pushes the limit slider 126 to drive the positioning column 124 to slide inside the positioning plate 125, so that the positioning plate 125 is pushed into the inside of the positioning groove 6, and the fusion device body 1 is gradually pushed to support, and the support height of the fusion device body 1 is expanded. There is no need to use other devices for fixing, which is convenient for the use of the fusion device body 1, and can effectively improve the use of the fusion device body 1, solving the problem that the existing intervertebral fusion device is inconvenient to support and expand the height, and needs to be fixed with the help of other devices, which is not conducive to the use of the fusion device.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

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

Claims

1. A microporous structure of a lumbar intervertebral fusion device, comprising a fusion device body (1), characterized in that: An opening groove (2) is provided inside the fusion device body (1), a threaded through hole (7) is provided on the left side surface of the fusion device body (1), a fixing plate (3) is installed at the opening of the left side surface of the threaded through hole (7), a connecting tube (5) is fixedly connected to the right side surface of the fixing plate (3), an adjustment structure (12) is movably installed inside the connecting tube (5), a stabilizing plate (11) is fixedly installed inside the connecting tube (5), and a rotating turntable (10) is movably installed on the left side surface of the stabilizing plate (11); The adjustment structure (12) comprises a limiting slide groove (121), the front face of the rotating turntable (10) is provided with a limiting slide groove (121), a positioning slide rod (122) is slidably installed inside the limiting slide groove (121), one end of the positioning slide rod (122) is connected to a positioning column (124), one end of the positioning column (124) is fixedly connected to a positioning plate (125), a limiting plate (123) is fixedly installed inside the stabilizing disk (11), and the positioning column (124) is slidably installed inside the limiting plate (123).

2. The microporous structure of a lumbar intervertebral fusion cage according to claim 1, characterized in that: A positioning groove (6) is provided on the inner wall of the fusion device body (1), the positioning plate (125) and the positioning groove (6) are adapted to each other, and the positioning groove (6) is slidably installed inside the positioning groove (6).

3. The microporous structure of a lumbar intervertebral fusion cage according to claim 1, characterized in that: The connecting tube (5) is provided with a thread matched with the threaded through hole (7) near the outside of the left end, and the left side surface of the fixing plate (3) is clamped with a limiting block (4).

4. The microporous structure of a lumbar intervertebral fusion cage according to claim 3, characterized in that: A rotating rod (9) is fixedly connected to the right side of the limit block (4); the rotating rod (9) passes through a rotating disk (10) and a stabilizing disk (11); the rotating disk (10) is fixedly connected to the outside of the rotating rod (9), and the stabilizing disk (11) is sleeved on the outside of the rotating rod (9).

5. The microporous structure of a lumbar intervertebral fusion cage according to claim 1, characterized in that: The left side surface of the fixing plate (3) is provided with a clamping groove which is mutually matched with the limiting block (4), and the outside of the fusion device body (1) is provided with fixing teeth (8).

6. The microporous structure of a lumbar intervertebral fusion cage according to claim 1, characterized in that: A limiting slider (126) is slidably mounted inside the limiting plate (123), and a positioning column (124) is fixedly connected to one side of the limiting slider (126).

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