CN218899823U

CN218899823U - Atlantoaxial interbody fusion cage

Info

Publication number: CN218899823U
Application number: CN202221723665.1U
Authority: CN
Inventors: 陈华江; 李泰�
Original assignee: Tianjin Zhengtian Medical Instrument Co Ltd; Beijing Naton Medical Technology Holdings Co Ltd
Current assignee: Tianjin Zhengtian Medical Instrument Co Ltd; Beijing Naton Medical Technology Holdings Co Ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2023-04-25
Anticipated expiration: 2032-07-06

Abstract

The utility model provides an atlantoaxial interbody fusion cage which comprises a fusion cage body and a developing piece, wherein the developing piece is embedded in the fusion cage body, and the fusion cage body is made of polyether-ether-ketone resin. The fusion device body is of a strip streamline structure, the front end of the fusion device body adopts a duckbill structure, the fusion device body further comprises a cavity and a fusion hole, the cavity penetrates through the upper surface and the lower surface of the fusion device body, and the fusion hole penetrates through the side walls of the two sides of the fusion device body and is communicated with the cavity. The atlantoaxial interbody fusion cage has a streamline structure, so that a surgeon can conveniently implant the atlantoaxial interbody fusion cage into a human body, surrounding soft tissues are prevented from being damaged, and meanwhile, the operation time is shortened; the granular bones are placed in the cavity, and the granular bones and peripheral tissues can be fused through the fusion holes, so that the intervertebral fusion effect is achieved; the developing part is embedded into the main body of the fusion device, so that the implantation position of the intervertebral fusion device can be observed more intuitively and clearly under X-rays.

Description

Atlantoaxial interbody fusion cage

Technical Field

The utility model relates to the technical field of medical appliances, in particular to an atlantoaxial interbody fusion cage.

Background

The intervertebral fusion device is used as an orthopedic implantable medical device, is one of main implants for realizing adjacent intervertebral space fusion of the spinal column, and the safety and the effectiveness of the intervertebral fusion device directly influence the effect of adjacent vertebral bone fusion.

Atlantoaxial fusion is a surgical procedure that joins or fuses together the atlas and the axis. Fusion procedures often require the use of bone grafting to facilitate fusion. Such procedures require either removal of a small amount of bone tissue from the patient's pelvic bone, either autograft, or harvesting a small amount of bone tissue from the donor, allograft, and then placing the harvested bone tissue between the two vertebrae so that they "fuse" together. With the aid of the implantation of biomechanical intervertebral spacers, the bone graft will replace the intervertebral disc that was completely removed during surgery. Atlantoaxial fusion is a common treatment for spinal disorders.

The application of the thoracolumbar fusion device in the atlantoaxial interbody fusion operation achieves good clinical curative effect, but the existing thoracolumbar fusion device is not designed for the atlantoaxial interbody fusion operation, and is not completely matched with the dimension of the atlantoaxial articular process joint, so the height and the dimension are relatively large, and the risk of implanting the fusion device can be increased. The implanted fusion device with too high speed can quicken the aging of peripheral soft tissues among atlantoaxial vertebrae, can also cause certain influence on bone growth, has short and small developing wires, inaccurate positioning during X-ray examination and the occurrence of unsmooth implantation and clamping phenomenon during implantation. Therefore, in order to further improve the efficacy and reduce the risk of surgery, there is a need for an atlantoaxial interbody fusion cage.

Disclosure of Invention

The utility model overcomes the defects in the prior art and provides an atlantoaxial interbody fusion cage.

The aim of the utility model is achieved by the following technical scheme.

The utility model provides an atlantoaxial interbody fusion cage, includes fusion ware main part and developing piece, developing piece inlays the fusion ware main part, the fusion ware main part is rectangular streamline structure, the front end of fusion ware main part adopts "duckbill" type structure, the fusion ware main part still includes cavity and fusion hole, the cavity runs through upper surface and the lower surface of fusion ware main part, the fusion hole runs through the lateral wall of the both sides of fusion ware main part and with the cavity is linked together.

As a preferable scheme of the atlantoaxial interbody fusion cage, corners of the fusion cage main body are all round-corner structures.

As a preferable scheme of the atlantoaxial interbody fusion cage, the number of the developing parts is four, and the developing parts are respectively arranged at four corners of the fusion cage main body and penetrate through the upper surface and the lower surface of the fusion cage main body.

As a preferable scheme of the atlantoaxial interbody fusion cage, the upper surface of the fusion cage main body is of a convex arc-shaped structure.

As a preferable mode of the atlantoaxial interbody fusion cage, the upper surface of the fusion cage main body is provided with saw teeth.

As a preferable mode of the atlantoaxial interbody fusion cage, the lower surface of the fusion cage main body is of a plane structure.

As a preferable mode of the atlantoaxial interbody fusion cage, the lower surface of the fusion cage main body is provided with saw teeth.

As a preferable scheme of the atlantoaxial interbody fusion cage, the fusion holes are of a strip-shaped hole structure, and the number of the fusion holes is two.

As a preferable scheme of the atlantoaxial interbody fusion cage, the fusion cage main body further comprises a threaded hole, and the threaded hole is in threaded connection with the implantation tool.

As a preferable mode of the atlantoaxial interbody fusion cage, the fusion cage main body is made of polyether-ether-ketone resin.

The beneficial effects of the utility model are as follows:

the utility model provides an atlantoaxial interbody fusion cage, wherein a main body of the fusion cage is of a streamline structure, and the front end of the main body of the fusion cage adopts a duckbill structure design, so that a surgeon can conveniently implant the fusion cage into a human body, surrounding soft tissues are prevented from being damaged, and meanwhile, the operation time is shortened; the granular bones are placed in the cavity, and the granular bones and peripheral tissues can be fused through the fusion holes, so that the intervertebral fusion effect is achieved; the developing part is embedded into the main body of the fusion device, so that the implantation position of the intervertebral fusion device can be observed more intuitively and clearly under X-rays.

Drawings

FIG. 1 is a schematic view of the structure of an atlantoaxial interbody fusion cage of the present utility model;

FIG. 2 is a side view of the atlantoaxial interbody fusion cage of the present utility model.

In the figure: 1. a cage body; 11. a front end; 12. a rear end; 13. an upper surface; 14. a lower surface;

2. a developing member; 3. a cavity; 4. a threaded hole; 5. a fusion hole; 6. chamfering; 7. triangular teeth.

Detailed Description

The technical scheme of the utility model is further described by specific examples.

As shown in fig. 1-2, the present embodiment provides an atlantoaxial interbody fusion cage, which includes a cage body 1 and a developing member 2, the developing member 2 is embedded in the cage body 1, and the cage body 1 is made of polyetheretherketone resin. The fusion device main body 1 is of a strip streamline structure, the front end 11 of the fusion device main body 1 adopts a duckbill structure, the fusion device main body 1 further comprises a cavity 3 and a fusion hole 5, the cavity 3 penetrates through the upper surface 13 and the lower surface 14 of the fusion device main body 1, and the fusion hole 5 penetrates through the side walls of the two sides of the fusion device main body 1 and is communicated with the cavity 3.

In the embodiment, the fusion device main body 1 is in a streamline structure, and the front end 11 of the fusion device main body 1 adopts a duckbill structure design, so that a surgeon can conveniently implant the fusion device main body into a human body, surrounding soft tissues are prevented from being damaged, and meanwhile, the operation time is shortened; the granular bones are placed in the cavity 3, and the granular bones and peripheral tissues can be fused through the fusion holes 5, so that the interbody fusion effect is achieved; the developing part 2 is embedded in the main body 1 of the fusion device, so that the implantation position of the intervertebral fusion device can be observed more intuitively and clearly under X-rays.

In this embodiment, the corner of the main body 1 of the fusion device is in a rounded structure, so that the outer surface of the main body 1 of the fusion device is smoother and more convenient to implant.

In this embodiment, the developing units 2 have a cylindrical structure and four in number, are respectively disposed at four corners of the main body 1 and penetrate through the upper surface 13 and the lower surface 14 of the main body 1, and under the X-ray, the developing units 2 can identify the overall size and the real-time position of the main body 1, so that a doctor can conveniently implant the correct position. The developing member 2 may be any of a variety of metal frames which are biologically good and which can be detected at the time of X-ray examination. In other embodiments, the number of developing members 2 may be greater, and the overall position of the cage body 1 may be clearly shown.

As shown in fig. 2, in the present embodiment, the upper surface 13 of the fusion device body 1 has a convex arc structure, and the lower surface 14 of the fusion device body 1 has a planar structure, which conforms to the physiological curve at the atlantoaxial.

The upper surface 13 of the fusion cage body 1 is provided with saw teeth, the saw teeth of the upper surface 13 of the fusion cage body 1 are the inverted teeth 6, and the inverted teeth 6 are firmly buckled with the atlas, so that the atlantoaxial interbody fusion cage can be stably fixed in the intervertebral space and is not easy to slide out.

The lower surface 14 of the fusion cage body 1 is provided with saw teeth, the saw teeth of the lower surface 14 of the fusion cage body 1 are triangular teeth 7, and the triangular teeth 7 are firmly inlaid with the dentate vertebrae, so that the atlantoaxial interbody fusion cage can be stably fixed in the intervertebral space and is not easy to slide out.

The fusion holes 5 are of a strip-shaped hole structure, the number of the fusion holes 5 is two, a large space can be provided for fusion of the granular bones and surrounding tissues, and the longitudinal pressure applied to the fusion device main body 1 can be uniformly dispersed to the periphery. As for the shape and number of the fusion holes 5, other choices can be made according to the specific circumstances.

The cage body 1 further comprises a threaded hole 4, the threaded hole 4 is formed in the rear end 12 of the cage body 1, the threaded hole 4 is in threaded connection with an implantation tool, and stable implantation operation can be achieved.

The particulate bone mentioned in this embodiment may be autologous bone or allogeneic bone.

The atlantoaxial interbody fusion cage implantation procedure in this embodiment is as follows: the prepared granular bones in the early stage are placed in the cavity 3 of the atlantoaxial interbody fusion cage, the atlantoaxial interbody fusion cage is connected with the threaded hole 4 by using an implantation tool, the atlantoaxial interbody fusion cage is inserted into the intervertebral space of the atlantoaxial, the implantation position of the interbody fusion cage is observed more intuitively and clearly under X-rays through the development part 2 arranged at the surrounding included angle of the main body 1 of the atlantoaxial interbody fusion cage, and the aim of recovering the optimal physiological curve of a patient can be achieved after the atlantoaxial interbody fusion cage is implanted due to the structural design of the atlantoaxial interbody fusion cage in the embodiment.

The foregoing describes one embodiment of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.

Claims

1. An atlantoaxial interbody fusion cage, characterized in that: including fusion ware main part (1) and developing piece (2), developing piece (2) inlay fusion ware main part (1), fusion ware main part (1) is rectangular streamline structure, front end (11) of fusion ware main part (1) adopt "duckbill" type structure, fusion ware main part (1) still includes cavity (3) and fusion hole (5), cavity (3) run through upper surface (13) and lower surface (14) of fusion ware main part (1), fusion hole (5) run through the lateral wall of the both sides of fusion ware main part (1) and with cavity (3) are linked together.

2. The atlantoaxial interbody cage of claim 1, wherein: the corners of the fusion device main body (1) are of round corner structures.

3. The atlantoaxial interbody cage of claim 1, wherein: the development pieces (2) are four, are respectively arranged at four corners of the fusion device main body (1) and penetrate through the upper surface (13) and the lower surface (14) of the fusion device main body (1).

4. The atlantoaxial interbody cage of claim 1, wherein: the upper surface (13) of the fusion device main body (1) is of a convex arc structure.

5. The atlantoaxial interbody cage of claim 1, wherein: the upper surface (13) of the cage body (1) is provided with serrations.

6. The atlantoaxial interbody cage of claim 1, wherein: the lower surface (14) of the fusion device main body (1) is of a plane structure.

7. The atlantoaxial interbody cage of claim 1, wherein: the lower surface (14) of the cage body (1) is provided with serrations.

8. The atlantoaxial interbody cage of claim 1, wherein: the fusion holes (5) are of a strip-shaped hole structure, and the number of the fusion holes (5) is two.

9. The atlantoaxial interbody cage of claim 1, wherein: the fusion device body (1) further comprises a threaded hole (4), the threaded hole (4) is formed in the rear end (12) of the fusion device body (1), and the threaded hole (4) is in threaded connection with an implantation tool.

10. The atlantoaxial interbody cage of claim 1, wherein: the fusion cage body (1) is made of polyether-ether-ketone resin.