Magnesium-containing visual interbody fusion cage

Abstract

The present invention discloses a magnesium-containing visualized intervertebral fusion device; it includes a fusion device body and a degradable developing rod; the fusion device body is made of PEEK material, formed into a flat rectangular parallelepiped, with a hollow structure inside to form a bone grafting chamber, a first chamber opening connected to the bone grafting chamber is opened on the left side, and a second chamber opening connected to the bone grafting chamber is opened on the right side, and the inner and outer surfaces are covered with a magnesium-containing coating, and a degradable developing rod is embedded inside. Effect: The magnesium-containing coating makes the present application have better bone induction performance, a large bone induction area, can better induce the symmetric growth of vertebral bones, and accelerate the fusion of vertebral bones. Compared with the traditional pure PEEK material, the use effect is better, and the four degradable developing rods can locate the direction of the present application into the intervertebral space, so that it is not easy to be crooked, and the unique structure of the present application itself makes it more firmly fixed and not easy to loosen, so that the present application has good stability after being placed in the intervertebral space, and can better promote the fusion of vertebral bones.

Description

Technical Field

[0001] The invention relates to the technical field of medical care products, in particular to a magnesium-containing visualized intervertebral fusion device. Background Art

[0002] With the aging of the population, spinal degenerative diseases with neck and shoulder pain and back and leg pain as the main symptoms are seriously affecting people's work and life. Intervertebral fusion is one of the main methods for treating spinal degenerative diseases. The ideal intervertebral fusion device should be able to correct spinal deformity, restore normal physiological curvature, maintain the stability of the intervertebral space, and most importantly, promote bone fusion.

[0003] At present, most of the intervertebral fusion cages are made of PEEK material. Although it has many excellent properties such as high temperature resistance, wear resistance, high strength, corrosion resistance and high purity, its use still has certain defects and shortcomings;

[0004] Specifically, on the one hand, its bone induction growth is not very good and cannot promote the fusion of vertebral bones well. On the other hand, a developing metal wire is generally embedded inside it so that it can be developed under ultrasound guidance when inserted into the intervertebral space, which is convenient for doctors to control in real time. The developing metal wire is set as a single one. Although it can serve as a developing reference, the developing positioning effect cannot reach the best. When the intervertebral fusion device inserted into the intervertebral space is slightly misaligned, it cannot be positioned and judged. Moreover, the inserted intervertebral fusion device is a simple intervertebral disc inserted into the intervertebral space, and then the two adjacent vertebrae are connected by accessory screws to clamp and fix it. It itself has no better fixing component to fix between the two adjacent vertebrae, so its fixing effect is not very good, it is easy to shift or slip, and then it cannot maintain the stability of the intervertebral space to promote the fusion of vertebral bones.

[0005] Therefore, the existing problems need to be solved. Summary of the invention

[0006] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a magnesium-containing visualized intervertebral fusion cage.

[0007] The technical solution adopted by the present invention to solve the problems of the prior art is: a magnesium-containing visualized intervertebral fusion device, comprising a fusion device body and at least one degradable developing rod for developing and positioning the fusion device;

[0008] The fusion device body is made of PEEK material and is formed into a flat rectangular structure. Its interior is a hollow structure to form a bone graft chamber. A first chamber opening is opened in the middle of its left side along the front-to-back direction, which is connected to the bone graft chamber and is suitable for reaching the vertebral lamina. A second chamber opening is opened in the middle of its right side along the front-to-back direction, which is connected to the bone graft chamber and is suitable for reaching the vertebral lamina. Its inner and outer surfaces are covered with a magnesium-containing coating, and the degradable developing rod is embedded therein.

[0009] The above technical solution is further explained below:

[0010] Preferably, the degradable developing rods are provided with four;

[0011] A first embedding channel is provided at the upper front part of the left side face of the fusion device body along the left-right direction, penetrating to the upper front part of the right side face; a second embedding channel is provided at the lower front part of the left side face of the fusion device body along the left-right direction, penetrating to the lower front part of the right side face; a third embedding channel is provided at the upper rear part of the left side face of the fusion device body along the left-right direction, penetrating to the upper rear part of the right side face; a fourth embedding channel is provided at the lower rear part of the left side face of the fusion device body along the left-right direction, penetrating to the lower rear part of the right side face; the four degradable developing rods are correspondingly embedded in the first embedding channel, the second embedding channel, the third embedding channel and the fourth embedding channel.

[0012] Preferably, the first embedded channel and the second embedded channel are opposite to each other up and down and are located in the same vertical plane A, the third embedded channel and the fourth embedded channel are opposite to each other up and down and are located in the same vertical plane B, the first embedded channel and the third embedded channel are opposite to each other front and back and are located in the same horizontal plane A, and the second embedded channel and the fourth embedded channel are opposite to each other front and back and are located in the same horizontal plane B.

[0013] Preferably, the left and right sides of the front end surface of the fusion device body are cut toward the left rear and the right rear respectively, so that the front end forms an isosceles trapezoidal guide portion for easy insertion into the intervertebral space, and all corners of the fusion device body are chamfered to ensure smooth transition between all surfaces.

[0014] Preferably, a plurality of first anti-slip serrated grooves are evenly formed vertically from the middle of the left side surface of the fusion device body to the rear thereof; and a plurality of second anti-slip serrated grooves are evenly formed vertically from the middle of the right side surface of the fusion device body to the rear thereof.

[0015] Preferably, the upper end surface of the fusion device body is evenly provided with a plurality of first barbs facing away from its front end along the front-to-back direction near its left side and the upper end surface is evenly provided with a plurality of first barbs facing away from its front end along the front-to-back direction near its left side and the lower bottom surface is evenly provided with a plurality of second ....

[0016] Preferably, a first intervertebral disc fusion hole connected to the bone graft bin is opened in the middle of the upper end surface of the fusion device body; a second intervertebral disc fusion hole connected to the bone graft bin is opened in the middle of the lower bottom surface of the fusion device body.

[0017] Preferably, a first screw insertion hole is opened in the left middle part of the rear end surface of the fusion device body, which is inclined toward the left front side and faces the rear inner part of the first compartment opening; a second screw insertion hole is opened in the right middle part of the rear end surface of the fusion device body, which is inclined toward the right front side and faces the rear inner part of the second compartment opening.

[0018] Preferably, a first holding groove is provided downward and backward in the rear middle of the upper end surface of the fusion device body; a second holding groove is provided upward and backward in the rear middle of the lower bottom surface of the fusion device body opposite to the first holding groove.

[0019] Preferably, the front middle part of the left side of the fusion device body and the rear middle part of the left side are respectively protruding to the left along the front-back direction with a first limiting convex strip suitable for inserting into the vertebral body bone; the front middle part of the right side of the fusion device body and the rear middle part of the right side are respectively protruding to the right along the front-back direction with a second limiting convex strip suitable for inserting into the vertebral body bone.

[0020] The beneficial effects of the present invention are:

[0021] The magnesium-containing visualized intervertebral fusion device provided by the present invention, when implemented, on the one hand, the inner and outer surfaces of the fusion device body are covered with a layer of magnesium-containing coating, so that the device itself has good osteoinductive performance. Because the inner and outer surfaces are covered with a layer of magnesium-containing coating, the osteoinductive area is large, so that the vertebral bones can be well induced to grow in opposite directions and the fusion of the vertebral bones can be accelerated, so that the use effect is better than that of the traditional pure PEEK material. On the other hand, four degradable developing rods are provided. When the first embedded channel and the second embedded channel are opposite to each other up and down and are located in the same vertical plane A, the third embedded channel and the fourth embedded channel are opposite to each other up and down and are located in the same vertical plane B, the first embedded channel and the third embedded channel are opposite to each other front and back and are located in the same horizontal plane A, and the second embedded channel and the fourth embedded channel are opposite to each other front and back and are located in the same horizontal plane B, the four degradable developing rods must be located on four parallel edges of a square body, and the insertion direction is positioned perpendicular to the four degradable developing rods, and is perpendicular to the two above. The plane A where the degradable developing rod is located is parallel to the plane B where the two degradable developing rods below are located. When the present application is inserted into the intervertebral space and it is found that the four degradable developing rods are not perpendicular to the positioned insertion direction and the images of the four degradable developing rods can be seen from the upper perspective, it indicates that the present application is inserted crookedly and needs to be swung to correct until the insertion direction of the present application is accurately controlled. In this way, the insertion and positioning effect of the present application is better. At the same time, after the present application is accurately positioned, a fastening screw is obliquely inserted into the first screw penetration hole through the first compartment opening and screwed into the first side vertebral body of the present application, and a fastening screw is obliquely inserted into the second screw penetration hole through the second compartment opening and screwed into the second side vertebral body of the present application. Under the coordinated fixing action of the multiple first anti-slip serrated grooves, the multiple second anti-slip serrated grooves, the multiple first barbs and the multiple second barbs, the present application is fixed more firmly and is not easy to loosen, so that the present application has good stability after being inserted into the intervertebral space, and can better promote the fusion of vertebral bones, and thus, the use effect of the present application can achieve the best. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the magnesium-containing visualized intervertebral fusion device of the present invention in accordance with the first embodiment. Figure 1 ;

[0023] Figure 2 In the first embodiment, the decomposition of the magnesium-containing visual intervertebral fusion cage of the present invention is Figure 1 ;

[0024] Figure 3 This is a schematic diagram of the overall structure of the magnesium-containing visualized intervertebral fusion device of the present invention in accordance with the first embodiment. Figure 2 ;

[0025] Figure 4In the first embodiment, the decomposition of the magnesium-containing visual intervertebral fusion cage of the present invention is Figure 2 ;

[0026] Figure 5 This is a reference diagram of the use status of the magnesium-containing visualized intervertebral fusion device of the present invention in the first embodiment;

[0027] Figure 6 yes Figure 5 The exploded view of the magnesium-containing visualized intervertebral fusion device of the present invention after being taken out from the corresponding insertion port;

[0028] Figure 7 The overall structure of the magnesium-containing visualized intervertebral fusion device of the present invention is shown in Example 2. Figure 1 ;

[0029] Figure 8 In the second embodiment, the decomposition of the magnesium-containing visual intervertebral fusion cage of the present invention is Figure 1 ;

[0030] Fig. 9 The overall structure of the magnesium-containing visualized intervertebral fusion device of the present invention is shown in Example 2. Figure 2 ; Fig.10 In the second embodiment, the decomposition of the magnesium-containing visual intervertebral fusion cage of the present invention is Figure 2 ;

[0031] Fig.11 This is a reference diagram of the use status of the magnesium-containing visualized intervertebral fusion device of the present invention in Example 2;

[0032] Fig.12 yes Fig.11 The exploded view of the magnesium-containing visualized intervertebral fusion device of the present invention after being taken out from the corresponding insertion port;

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings.

[0034] Figure Number:

[0035] Magnesium-containing visualized interbody fusion cage 1000;

[0036] Fusion device body 10;

[0037] First warehouse 101;

[0038] The second warehouse 102;

[0039] A first embedding channel 103;

[0040] A second embedding channel 104;

[0041] A third embedding channel 105;

[0042] a fourth embedding channel 106;

[0043] Isosceles trapezoidal guide portion 107;

[0044] First anti-slip serrated groove 108;

[0045] Second anti-slip serrated groove 109;

[0046] first barb 110;

[0047] First intervertebral disc fusion foramen 111;

[0048] Second intervertebral disc fusion foramen 112;

[0049] First screw penetration hole 113;

[0050] Second screw penetration hole 114;

[0051] A first gripping groove 115;

[0052] A second gripping groove 116;

[0053] A first limiting convex strip 117;

[0054] A second limiting convex strip 118;

[0055] Degradable developing rod 20;

[0056] Vertebra 2000;

[0057] The first limit slot 2001; the second limit slot 2002;

[0058] Intervertebral disc 3000;

[0059] Place entrance 3001; DETAILED DESCRIPTION

[0060] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, so as to more clearly and intuitively understand the inventive essence of the present invention.

[0061] Embodiment 1

[0062] Combination Figure 1-Figure 6 As shown;

[0063] In this embodiment, a magnesium-containing visualized intervertebral fusion cage 1000 provided by the present invention includes a fusion cage body 10 and at least one degradable developing rod 20 for developing and positioning the cage;

[0064] Among them, the fusion device body 10 is made of PEEK material and is formed into a flat rectangular structure. Its interior is a hollow structure to form a bone grafting chamber. A first chamber opening 101 is opened in the middle of the left side along the front-to-back direction, which is connected to the bone grafting chamber and is suitable for reaching the vertebral lamina of the vertebral body 2000 to facilitate the growth of the vertebral lamina of the vertebral body 2000 into the present application. A second chamber opening 102 is opened in the middle of the right side along the front-to-back direction, which is connected to the bone grafting chamber and is suitable for reaching the vertebral lamina of the vertebral body 2000 to facilitate the growth of the vertebral lamina of the vertebral body 2000 into the present application. The inner and outer surfaces are covered with a magnesium-containing coating, and the degradable developing rod 20 is embedded therein.

[0065] Based on the above, it is clear that, in specific implementation, the present application is mainly used as a magnesium-containing visualized intervertebral fusion cage 1000.

[0066] The inner and outer surfaces of the fusion device body 10 are covered with a magnesium-containing coating, so that it has good bone induction performance. Because its inner and outer surfaces are covered with a magnesium-containing coating, its bone induction area is large, so that it can better induce the vertebral bones to grow in opposite directions and accelerate the fusion of the vertebral bones, so that the use effect will be better than that made of traditional pure PEEK material.

[0067] Preferably, in the present technical solution, the degradable developing rods 20 are provided with four;

[0068] A first embedding channel 103 is opened on the upper front part of the left side of the fusion device body 10 along the left-right direction, penetrating to the upper front part of the right side of the fusion device body; a second embedding channel 104 is opened on the lower front part of the left side of the fusion device body 10 along the left-right direction, penetrating to the lower front part of the right side of the fusion device body; a third embedding channel 105 is opened on the upper rear part of the left side of the fusion device body 10 along the left-right direction, penetrating to the upper rear part of the right side of the fusion device body 10; a fourth embedding channel 106 is opened on the lower rear part of the left side of the fusion device body 10 along the left-right direction, penetrating to the lower rear part of the right side of the fusion device body; the four degradable developing rods 20 are correspondingly embedded in the first embedding channel 103, the second embedding channel 104, the third embedding channel 105 and the fourth embedding channel 106.

[0069] And preferably, in a specific implementation, the first embedded channel 103 and the second embedded channel 104 are opposite to each other up and down so as to be located in the same vertical plane A, the third embedded channel 105 and the fourth embedded channel 106 are opposite to each other up and down so as to be located in the same vertical plane B, the first embedded channel 103 and the third embedded channel 105 are opposite to each other front and back so as to be located in the same horizontal plane A, and the second embedded channel 104 and the fourth embedded channel 106 are opposite to each other front and back so as to be located in the same horizontal plane B.

[0070] As a result, the four degradable developing rods 20 must be located on the four parallel edges of a square body, and the insertion direction is positioned perpendicular to the four degradable developing rods 20, and parallel to the plane A where the two upper degradable developing rods 20 are located, and parallel to the plane B where the two lower degradable developing rods 20 are located. When the present application is implanted into the intervertebral space and it is found that the four degradable developing rods 20 are not perpendicular to the positioned insertion direction and the images of the four degradable developing rods 20 can be seen from the upper perspective, it indicates that the present application is implanted crookedly and needs to be swung to correct until the implantation direction of the present application is accurately controlled, thereby achieving a better implantation and positioning effect.

[0071] Furthermore, in the present technical solution, the left and right sides of the front end surface of the fusion device body 10 are cut toward the left rear and the right rear, respectively, so that the front end forms an isosceles trapezoidal guide portion 107 for easy insertion into the intervertebral space, and all the corners of the fusion device body 10 are chamfered to ensure smooth transition between all surfaces.

[0072] Therefore, the present invention is formed as a whole into a bullet-shaped shape, so that the present invention has good guidance when inserted into the intervertebral space, reduces insertion resistance, shortens insertion time, and saves more effort.

[0073] Furthermore, in this embodiment, a plurality of first anti-slip serrated grooves 108 are evenly formed vertically from the middle of the left side to the rear of the fusion device body 10 ; a plurality of second anti-slip serrated grooves 109 are evenly formed vertically from the middle of the right side to the rear of the fusion device body 10 .

[0074] In this way, an insertion port 3001 is opened in the intervertebral disc 3000 of the patient's intervertebral space, and after the present application is placed in the opened insertion port 3001, the corresponding multiple first anti-slip serrated grooves 108 will abut against the vertebral plate surface of the vertebral body 2000 on the first side of the present application, and the corresponding multiple second anti-slip serrated grooves 109 will abut against the vertebral plate surface of the vertebral body 2000 on the second side of the present application, so that both can increase the friction force and then improve the anti-slip performance.

[0075] Furthermore, in the present technical solution, the upper end surface of the fusion device body 10 is evenly provided with a plurality of first barbs 110 facing away from its front end along the front-to-back direction near the left side and the right side of the upper end surface; the lower bottom surface of the fusion device body 10 is evenly provided with a plurality of second barbs (not shown) facing away from its front end along the front-to-back direction near the left side and the right side of the lower bottom surface.

[0076] Thus, the corresponding multiple first barbs 110 will abut against the inner wall of one side of the intervertebral disc 3000 in the opening 3001, and the corresponding multiple second barbs (not shown) will abut against the inner wall of the other side of the intervertebral disc 3000 in the opening 3001, so as to increase the friction force and thereby improve the anti-slip property.

[0077] Furthermore, in the specific implementation, the middle part of the upper end surface of the fusion device body 10 described in the present application is provided with a first intervertebral disc fusion hole 111 connected to the bone graft bin to facilitate the growth of the intervertebral disc 3000 in the intervertebral space; the middle part of the lower bottom surface of the fusion device body 10 is provided with a second intervertebral disc fusion hole 112 connected to the bone graft bin to facilitate the growth of the intervertebral disc 3000 in the intervertebral space.

[0078] In the present application, a first screw penetration hole 113 is opened at the left middle part of the rear end surface of the fusion device body 10, which is inclined toward the left front side and faces the inner rear portion of the first compartment opening 101; a second screw penetration hole 114 is opened at the right middle part of the rear end surface of the fusion device body 10, which is inclined toward the right front side and faces the inner rear portion of the second compartment opening 102.

[0079] Therefore, after the application is accurately positioned, a fastening screw is obliquely inserted through the first opening 101 in the first screw hole 113 and screwed into the first side vertebral body 2000 of the application, and a fastening screw is obliquely inserted through the second opening 102 in the second screw hole 114 and screwed into the second side vertebral body 2000 of the application, and under the coordinated fixing action of the multiple first anti-slip serrations 108, the multiple second anti-slip serrations 109, the multiple first barbs 110 and the multiple second barbs (not shown), the application will be fixed more firmly and not easy to loosen, so that the application has good stability after being inserted into the intervertebral space, and can better promote the fusion of vertebral bones.

[0080] Furthermore, the use effect of this application can be effectively improved.

[0081] It should be added that, in specific implementation, a first gripping groove 115 is provided downward and backward at the rear middle portion of the upper end surface of the fusion device body 10 described in the present application; a second gripping groove 116 is provided upward and backward at the rear middle portion of the lower bottom surface of the fusion device body 10 which is opposite to the first gripping groove 115 .

[0082] Thus, by using a clamping device to clamp the first holding groove 115 and the second holding groove 116, the present application can be clamped and inserted into the insertion port 3001 in the opened intervertebral disc 3000, so as to facilitate the manipulation of the present application.

[0083] Embodiment 2

[0084] Combination Figure 7-Figure 12As shown;

[0085] On the basis of the first embodiment, the front middle part of the left side surface and the rear middle part of the left side surface of the fusion device body 10 are respectively protruding to the left along the front-to-back direction with a first limiting convex strip 117 suitable for being inserted into the vertebral bone; the front middle part of the right side surface and the rear middle part of the right side surface of the fusion device body 10 are respectively protruding to the right along the front-to-back direction with a second limiting convex strip 118 suitable for being inserted into the vertebral bone.

[0086] It should be noted here that during actual surgical operations, when the present application in this embodiment is used as an intervertebral fusion device, it is necessary to open an insertion port 3001 in the intervertebral disc 3000 of the patient's intervertebral space, and it is also necessary to scrape a long first limiting groove 2001 in the middle of the vertebral body 2000 on the first side of the present application relative to the two first limiting ridges 117 and the first opening 101, and scrape a long second limiting groove 2002 in the middle of the vertebral body 2000 on the second side of the present application relative to the two second limiting ridges 118 and the second opening 102.

[0087] Therefore, after the present application is inserted into the opening 3001, the two first limiting convex strips 117 will be inserted into the first limiting groove 2001, and the two second limiting convex strips 118 will be inserted into the second limiting groove 2002, so that the present application has a better limiting effect, better fixation stability, and is less likely to shift in the intervertebral space, so that the present application can achieve the best stability after being inserted into the intervertebral space, and the fusion effect of the vertebral bones can achieve the best.

[0088] In all the above embodiments, the degradable developing rod 20 is preferably made of magnesium alloy, and the four degradable developing rods 20 are preferably screwed into the first embedding channel 103, the second embedding channel 104, the third embedding channel 105 and the fourth embedding channel 106 with corresponding threads.

[0089] Other embodiments and the like are not described one by one here.

[0090] To sum up, the overall structure of the present invention is simple, easy to implement, easy to operate, highly practical, highly specific, and has low manufacturing cost. There is no need to increase too much cost in the improvement of the structure and the improvement of the technology, which makes the present invention bound to have good market promotion value. The present invention will be very popular and can be effectively popularized.

[0091] The above description is only a preferred embodiment of the present invention, and does not limit the patent protection scope of the present invention. Any transformation of equivalent structures or equivalent processes made using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A magnesium-containing visualized intervertebral fusion cage, characterized in that: It includes a fusion device body and at least one degradable imaging rod for imaging and positioning the fusion device body; The main body of the fusion device is made of PEEK and is formed into a flat rectangular structure. The interior thereof is a hollow structure to form a bone grafting chamber. A first chamber opening connected to the bone grafting chamber and suitable for reaching the vertebral lamina is opened in the middle of the left side along the front-to-back direction. A second chamber opening connected to the bone grafting chamber and suitable for reaching the vertebral lamina is opened in the middle of the right side along the front-to-back direction. The inner and outer surfaces thereof are both covered with a layer of magnesium-containing coating, and a degradable imaging rod is embedded therein. A first limiting convex strip suitable for inserting into the vertebral bone is respectively provided at the middle of the front face and the middle of the rear face of the left side of the fusion device body protruding to the left along the front-back direction; a second limiting convex strip suitable for inserting into the vertebral bone is respectively provided at the middle of the front face and the middle of the rear face of the right side of the fusion device body protruding to the right along the front-back direction; A plurality of first anti-slip serrated grooves are evenly formed vertically from the middle of the left side of the fusion device body to the rear thereof; a plurality of second anti-slip serrated grooves are evenly formed vertically from the middle of the right side of the fusion device body to the rear thereof.

2. The magnesium-containing visualized intervertebral fusion cage according to claim 1, characterized in that: There are four degradable developing rods; A first embedding channel is opened along the left-right direction at the upper front part of the left side face of the fusion device body, penetrating to the upper front part of the right side face; a second embedding channel is opened along the left-right direction at the lower front part of the left side face of the fusion device body, penetrating to the lower front part of the right side face; a third embedding channel is opened along the left-right direction at the upper rear part of the left side face of the fusion device body, penetrating to the upper rear part of the right side face; a fourth embedding channel is opened along the left-right direction at the lower rear part of the left side face of the fusion device body, penetrating to the lower rear part of the right side face; four degradable developing rods are correspondingly embedded in the first embedding channel, the second embedding channel, the third embedding channel and the fourth embedding channel.

3. The magnesium-containing visualized intervertebral fusion cage according to claim 2, characterized in that: The first embedded channel and the second embedded channel are opposite to each other up and down and are located in the same vertical plane A, the third embedded channel and the fourth embedded channel are opposite to each other up and down and are located in the same vertical plane B, the first embedded channel and the third embedded channel are opposite to each other front and back and are located in the same horizontal plane A, and the second embedded channel and the fourth embedded channel are opposite to each other front and back and are located in the same horizontal plane B.

4. The magnesium-containing visualized intervertebral fusion cage according to claim 3, characterized in that: The left and right sides of the front end surface of the fusion device body are cut toward its left rear and right rear respectively, so that its front end forms an isosceles trapezoidal guide portion for easy insertion into the intervertebral space, and all corners of the fusion device body are chamfered to ensure smooth transition between all surfaces.

5. The magnesium-containing visualized intervertebral fusion cage according to claim 4, characterized in that: A plurality of first barbs facing away from the front end are evenly arranged on the upper end surface of the fusion device body near its left side and the upper end surface near its right side along the front-to-back direction; a plurality of second barbs facing away from the front end are evenly arranged on the lower bottom surface of the fusion device body near its left side and the lower bottom surface near its right side along the front-to-back direction.

6. The magnesium-containing visualized intervertebral fusion cage according to claim 4, characterized in that: A first intervertebral disc fusion hole connected to the bone grafting bin is opened in the middle of the upper end surface of the fusion device body; a second intervertebral disc fusion hole connected to the bone grafting bin is opened in the middle of the lower bottom surface of the fusion device body.

7. The magnesium-containing visualized intervertebral fusion cage according to claim 4, characterized in that: A first screw penetration hole is opened in the left middle part of the rear end surface of the fusion device body, which is inclined toward the left front side and faces the rear inner part of the first chamber opening; a second screw penetration hole is opened in the right middle part of the rear end surface of the fusion device body, which is inclined toward the right front side and faces the rear inner part of the second chamber opening.

8. The magnesium-containing visualized intervertebral fusion cage according to claim 4, characterized in that: A first holding groove is provided at the rear middle of the upper end surface of the fusion device body downward and backward; a second holding groove is provided at the rear middle of the lower bottom surface of the fusion device body upward and backward, which is opposite to the first holding groove.

Images