Porous alloy artificial intervertebral fusion device with light-based apatite coating

Abstract

The utility model discloses a light-based apatite coating porous alloy artificial interbody fusion device which comprises a first fusion cage, a second fusion cage and a connecting plate, and connecting mechanisms used for connecting the first fusion cage and the second fusion cage are arranged on the side walls of the two ends of the connecting plate. The connecting mechanism comprises two symmetrically-arranged connecting columns fixedly connected to the side walls of the two ends of the connecting plate, the side walls of the opposite ends of the first fusion cage and the second fusion cage are each fixedly connected with two symmetrically-arranged connecting pipes, and the multiple connecting columns are slidably connected into the connecting pipes on the same side. The fusion cage is reasonable in structure, the first fusion cage body and the second fusion cage body are connected through the connecting plate, the connecting pipe and the connecting column by arranging the connecting mechanism, and the installation stability of the first fusion cage body and the second fusion cage body can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lumbar fusion, in particular to a light-based apatite-coated porous alloy artificial intervertebral fusion device. Background Art

[0002] A lumbar fusion cage is a medical device used in spinal surgery. During lumbar surgery, the lumbar fusion cage mainly plays the following roles: maintaining the height of the intervertebral space: preventing intervertebral space collapse, maintaining the normal physiological curvature of the spine, promoting lumbar fusion, providing support and space for bone tissue growth, guiding bone tissue to grow in and around the fusion cage, promoting fusion between lumbar vertebrae, sharing pressure, helping to share the pressure of the spine, and reducing the burden on the intervertebral disc and vertebrae.

[0003] In the prior art, during the use of traditional lumbar fusion devices, fillers need to be added to the placement groove of the lumbar fusion device before it is placed between the vertebrae. However, due to the different intervertebral widths of different people, the required fusion points are also different. Wider intervertebral spaces require two-point fixation, so two fusion devices need to be placed. However, there is a lack of connection between the two fusion devices, resulting in structural instability. Therefore, the utility model proposes a light-based apatite-coated porous alloy artificial intervertebral fusion device to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a light-based apatite-coated porous alloy artificial intervertebral fusion device.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A light-based apatite-coated porous alloy artificial intervertebral fusion device includes a first fusion device, a second fusion device and a connecting plate. The side walls at both ends of the connecting plate are provided with a connecting mechanism for connecting the first fusion device and the second fusion device. The connecting mechanism includes two symmetrically arranged connecting columns fixedly connected to the side walls at both ends of the connecting plate. Two symmetrically arranged connecting tubes are fixedly connected to the side walls at opposite ends of the first fusion device and the second fusion device. Multiple connecting columns are respectively slidably connected in the connecting tubes on the same side. The ends of the multiple connecting columns are elastically connected to the inner walls of the connecting tubes on the same side by springs. A through groove is opened on the side wall of the connecting plate, and an adjustment mechanism for adjusting the first fusion device and the second fusion device is provided in the through groove.

[0007] Preferably, the adjustment mechanism comprises two symmetrically arranged sliders slidably connected in the through slot, and both ends of the two sliders are fixedly connected with a second trapezoidal block.

[0008] Preferably, a first trapezoidal block is fixedly connected to the side walls of the first and second fusion devices at opposite ends, and the first trapezoidal block matches the second trapezoidal block.

[0009] Preferably, the first fusion device and the second fusion device are both provided with placement grooves, and the upper and lower side walls of the first fusion device and the second fusion device are both provided with anti-slip grooves.

[0010] Preferably, a double-headed threaded rod is rotatably connected to the inner wall of the through groove, and the double-headed threaded rod passes through the two sliding blocks and is threadedly connected thereto.

[0011] Preferably, a through hole is formed at one end of the connecting plate, and the through hole is communicated with the through groove.

[0012] Preferably, a cup head is rotatably connected in the through hole, and the cup head is fixedly connected to the end of the double-headed threaded rod.

[0013] Preferably, two symmetrically arranged operation holes are provided on the side walls of the first fusion device and the second fusion device.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By providing a connecting mechanism and using a connecting plate, a connecting tube and a connecting column to connect the first fusion device and the second fusion device, the installation stability of the first fusion device and the second fusion device can be greatly improved.

[0016] 2. By setting up an adjustment mechanism, it can be used for different groups of people. When the distance between the first fusion device and the second fusion device needs to be adjusted, the double-headed threaded rod can be rotated. The rotation of the double-headed threaded rod drives the two sliders connected to it with threads to move, thereby driving the second trapezoidal block to move. The movement of the second trapezoidal block can push the first trapezoidal blocks on both sides to move, thereby realizing the adjustment of the distance between the first fusion device and the second fusion device and improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of a light-based apatite-coated porous alloy artificial intervertebral fusion device proposed in the present invention;

[0018] Figure 2 This is a bottom-up stereoscopic view of a light-based apatite-coated porous alloy artificial intervertebral fusion device proposed in the present invention;

[0019] Figure 3 This is a sectional perspective view of a light-based apatite-coated porous alloy artificial intervertebral fusion device proposed in the present invention;

[0020] Figure 4This is a side view of a light-based apatite-coated porous alloy artificial intervertebral fusion device proposed in the utility model;

[0021] Figure 5 Figure 3 A magnified view of the structure in Figure 2.

[0022] In the figure: 1 first fusion device, 2 second fusion device, 3 operation hole, 4 connecting plate, 5 placement groove, 6 anti-slip groove, 7 first trapezoidal block, 8 double-headed threaded rod, 9 through groove, 10 slider, 11 second trapezoidal block, 12 connecting column, 13 connecting tube, 14 spring, 15 through hole, 16 cup head. DETAILED DESCRIPTION

[0023] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without violating the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Reference Figure 1-5 , a light-based apatite-coated porous alloy artificial intervertebral fusion device, comprising a first fusion device 1, a second fusion device 2 and a connecting plate 4, the first fusion device 1 and the second fusion device 2 are both provided with a placement groove 5, the side walls of the first fusion device 1 and the second fusion device 2 are both provided with two symmetrically arranged operation holes 3, and the upper and lower end side walls of the first fusion device 1 and the second fusion device 2 are both provided with anti-slip grooves 6, the anti-slip grooves 6 can increase friction, improve installation stability and avoid device deviation, the device is made of titanium alloy as a whole, and a light-based apatite coating is provided on its surface, the chemical composition and crystal structure of hydroxyapatite are very similar to the inorganic components in human bones, when the implant with hydroxyapatite coating is implanted into the human body, it can induce bone cells to grow and adhere on its surface, promote the formation of new bone tissue, thereby accelerating the bone integration process and improving the bonding strength and stability between the implant and bone tissue.

[0025] Both end side walls of the connecting plate 4 are provided with connecting mechanisms for connecting the first fusion device 1 and the second fusion device 2. The connecting mechanisms include two symmetrically arranged connecting columns 12 fixedly connected to the side walls at both ends of the connecting plate 4. Two symmetrically arranged connecting tubes 13 are fixedly connected to the side walls at the opposite ends of the first fusion device 1 and the second fusion device 2. Multiple connecting columns 12 are respectively slidably connected in the connecting tubes 13 on the same side, and the ends of the multiple connecting columns 12 are elastically connected to the inner walls of the connecting tubes 13 on the same side through springs 14.

[0026] A through slot 9 is provided on the side wall of the connecting plate 4, and an adjustment mechanism for adjusting the first fusion device 1 and the second fusion device 2 is provided in the through slot 9. The adjustment mechanism includes two symmetrically arranged sliders 10 that are slidably connected in the through slot 9. The two ends of the two sliders 10 are fixedly connected to the second trapezoidal block 11. The first trapezoidal block 7 is fixedly connected to the side walls at the opposite ends of the first fusion device 1 and the second fusion device 2. The first trapezoidal block 7 cooperates with the second trapezoidal block 11. A double-headed threaded rod 8 is rotatably connected to the inner wall of the through slot 9. The double-headed threaded rod 8 passes through the two sliders 10 and is threadedly connected to them. The thread directions of the two ends of the double-headed threaded rod 8 are opposite. A through hole 15 is provided at one end of the connecting plate 4. The through hole 15 is connected to the through slot 9. A cup head 16 is rotatably connected in the through hole 15, and the cup head 16 is fixedly connected to the end of the double-headed threaded rod 8.

[0027] When the present invention is used, the first fusion device 1 and the second fusion device 2 are first connected by using the connecting mechanism, and then fillers are added to the placement groove 5, and the first fusion device 1 and the second fusion device 2 are placed between the vertebrae. When it is necessary to adjust the distance between the first fusion device 1 and the second fusion device 2 to suit different groups of people, a screwdriver can be used to twist the cup head 16. The rotation of the cup head 16 can drive the double-headed threaded rod 8 to rotate, thereby driving the two sliders 10 threadedly connected to it to move closer to the middle, and then driving the second trapezoidal blocks 11 on both sides to move between the two middle parts. In the process of the second trapezoidal blocks 11 on both sides moving toward the middle, they can push the first trapezoidal blocks 7 that match them to move, and the first trapezoidal blocks 7 at both ends move toward both ends, driving the first fusion device 1 and the second fusion device 2 to move toward both ends, thereby adjusting the distance between the first fusion device 1 and the second fusion device 2, so that it is suitable for different groups of people.

[0028] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A light-based apatite-coated porous alloy artificial intervertebral fusion device, comprising a first fusion cage (1), a second fusion cage (2) and a connecting plate (4), characterized in that: The side walls at both ends of the connecting plate (4) are provided with connecting mechanisms for connecting the first fusion device (1) and the second fusion device (2), and the connecting mechanisms include two symmetrically arranged connecting columns (12) fixedly connected to the side walls at both ends of the connecting plate (4), and two symmetrically arranged connecting tubes (13) are fixedly connected to the side walls at the opposite ends of the first fusion device (1) and the second fusion device (2), and a plurality of the connecting columns (12) are respectively slidably connected in the connecting tubes (13) on the same side, and the ends of the plurality of the connecting columns (12) are elastically connected to the inner walls of the connecting tubes (13) on the same side by springs (14), and a through groove (9) is provided on the side wall of the connecting plate (4), and an adjustment mechanism for adjusting the first fusion device (1) and the second fusion device (2) is provided in the through groove (9).

2. The light-based apatite-coated porous alloy artificial intervertebral fusion device according to claim 1, characterized in that: The adjustment mechanism comprises two symmetrically arranged sliders (10) slidably connected in the through slot (9), and both ends of the two sliders (10) are fixedly connected to a second trapezoidal block (11).

3. The light-based apatite-coated porous alloy artificial intervertebral fusion device according to claim 2, characterized in that: A first trapezoidal block (7) is fixedly connected to the side walls of the first fusion device (1) and the second fusion device (2) at one end opposite to each other, and the first trapezoidal block (7) is matched with the second trapezoidal block (11).

4. The light-based apatite-coated porous alloy artificial intervertebral fusion device according to claim 3, characterized in that: The first fusion device (1) and the second fusion device (2) are both provided with placement grooves (5), and the upper and lower side walls of the first fusion device (1) and the second fusion device (2) are both provided with anti-slip grooves (6).

5. The light-based apatite-coated porous alloy artificial intervertebral fusion device according to claim 4, characterized in that: A double-headed threaded rod (8) is rotatably connected to the inner wall of the through groove (9), and the double-headed threaded rod (8) passes through two sliders (10) and is threadably connected thereto.

6. The light-based apatite-coated porous alloy artificial intervertebral fusion device according to claim 5, characterized in that: A through hole (15) is provided at one end of the connecting plate (4), and the through hole (15) is communicated with the through groove (9).

7. The light-based apatite-coated porous alloy artificial intervertebral fusion device according to claim 6, characterized in that: A cup head (16) is rotatably connected in the through hole (15), and the cup head (16) is fixedly connected to the end of the double-headed threaded rod (8).

8. The light-based apatite-coated porous alloy artificial intervertebral fusion device according to claim 7, characterized in that: Two symmetrically arranged operating holes (3) are provided on the side walls of the first fusion device (1) and the second fusion device (2).

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