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Folding and unfolding type interbody fusion cage

An intervertebral fusion device, folding and unfolding technology, applied in the direction of spinal implants, etc., can solve the problems that the contact area between the fusion device and the vertebral body cannot be increased, the fusion rate cannot be truly and effectively improved, and the space for bone grafting can be increased. Improve the intervertebral fusion rate, increase safety, and increase the effect of bone grafting

Active Publication Date: 2020-11-17
ZHONGSHAN HOSPITAL FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006]Patent No. "201920227546.9" is a patent named "expandable fusion device", which increases the height of the fusion device and increases the bone graft space through the action of the connecting rod ; but it only increases the height, but it cannot increase the contact area between the fusion cage and the vertebral body, and cannot really and effectively improve the fusion rate

Method used

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  • Folding and unfolding type interbody fusion cage
  • Folding and unfolding type interbody fusion cage
  • Folding and unfolding type interbody fusion cage

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Embodiment Construction

[0023] According to the attached Figure 1 ~ Figure 4 , give a preferred embodiment of the present invention, and give a detailed description, so that the functions and characteristics of the present invention can be better understood.

[0024] see figure 1 and Figure 4 , a foldable and unfoldable intervertebral fusion device according to an embodiment of the present invention, comprising an upper shell 1, a lower shell 2, a plurality of unfolding devices 3 and two foldable unfolding surfaces 4; the foldable unfolding surfaces 4 are respectively connected to the upper shell 1 and the lower case 2 and located on both sides of the upper case 1 and the lower case 2; The same end of the 2 cooperates to form an operation port 5 communicating with the cavity; the upper shell 1 and the lower shell 2 are respectively provided with an unfolding device 3; in the cavity.

[0025] Cavities are used to accommodate bone particles. The folding and unfolding surface 4 in the folded stat...

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PUM

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Abstract

The invention provides a folding and unfolding type interbody fusion cage. The folding and unfolding type interbody fusion cage comprises an upper shell, a lower shell, a plurality of unfolding devices and two folding and unfolding faces. The folding and unfolding faces are connected between the upper shell and the lower shell and located on two sides of the upper shell and two sides of the lowershell respectively. The upper shell, the lower shell and the folding and unfolding faces are matched to form a cavity, and the same ends of the upper shell and the lower shell are matched to form an operation port communicating with the cavity. The upper shell and the lower shell are each provided with an unfolding device. When the folding and unfolding type interbody fusion cage is not unfolded,the folding and unfolding faces are folded and stored in the cavity. According to the folding and unfolding type interbody fusion cage, under the condition that the initial size of the fusion cage isnot increased, an intervertebral space can be implanted into a small incision, then transverse expansion meeting the clinical requirement is performed after the interbody fusion cage reaches a properposition, and the bony fusion area of the interior of the fusion cage and the vertebral body is enlarged.

Description

technical field [0001] The invention relates to the technical field of intervertebral fusion devices, in particular to a foldable and unfoldable intervertebral fusion device. Background technique [0002] Degenerative disc disease, lumbar instability, low back pain caused by spondylolisthesis, and spinal instability caused by a large number of traumas have become one of the important diseases that endanger public health and are the leading cause of spinal disability. The goal of spinal disease treatment It is to relieve low back pain and restore spinal stability. [0003] Spinal fusion is one of the important methods for the treatment of spinal diseases. Surgery is used to treat spinal instability and slippage caused by degenerative changes, trauma, etc., and to rebuild the mechanical stability of the spine by making the local upper and lower segments form bony fusion. sex. In recent years, in order to increase the fusion rate of bone grafts, reduce the dependence on exter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44
CPCA61F2/447
Inventor 江立波张键孟德华徐沁同袁亚
Owner ZHONGSHAN HOSPITAL FUDAN UNIV
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