Fusion cage

A fusion device and porous structure technology, applied in the field of fusion devices for spinal intervertebral fixation, can solve the problems of position loss, operation failure, poor bone induction ability, etc.

Active Publication Date: 2016-05-11
BEIJING NATON TECH GRP CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The first one uses peek material. Although this method has better biocompatibility, its osteoinductive ability is poor; and the bone graft space of the fusion cage is limited, making it difficult for the bony endplate to form bone ingrowth with the surface of the PEEK fusion cage.
Patients experience poor immediate fusion stability, loss of position, and eventual nonfusion of the fusion cage after surgery, leading to surgical failure
[0004] The second type uses a titanium alloy metal fusion cage, which is very different from the elastic modulus of the human body, and has high rigidity, which is not conducive to osseointegration
[0005] The third method uses Tan metal deposition. This method adopts a fully porous design. The disadvantage is that the rigidity is not enough and there is no osteoinductive ability.

Method used

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Embodiment Construction

[0035] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

[0036] In the following description of various examples of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems and steps which may implement aspects of the invention. It is to be understood that other specific arrangements of components, structures, exemplary means, systems and steps may be utilized and stru...

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Abstract

The invention discloses a fusion cage. The fusion cage comprises a frame and a porous structure, an inner space is formed in the frame in a defined mode, and through holes are formed in the side wall, the front wall and the rear wall of the frame; the porous structure is arranged in the inner space and provided with multiple micropore units communicated with the through holes, and the micropore units are combined together in a three-dimensional network shape. The strength and rigidity of the fusion cage can be improved by adopting the frame structure; the through holes are formed in the frame, the porous structure is arranged in the frame and comprises multiple micropore units combined in the three-dimensional network shape, the bone induction capacity can be improved substantially, and synosteosis is facilitated.

Description

technical field [0001] The present invention relates generally to fusion devices, and in particular, to a fusion device for intervertebral fixation of the spine. Background technique [0002] At present, fusion cages for spinal intervertebral fixation are widely used, and their structures usually include the following types. [0003] The first one uses peek material. Although this method has better biocompatibility, its osteoinductive ability is poor; and the bone graft space of the fusion cage is limited, making it difficult for the bony endplate to form bone ingrowth with the surface of the PEEK fusion cage. . Patients experience poor immediate cage stability, loss of position, and eventual nonfusion after surgery, leading to surgical failure. [0004] The second type uses a titanium alloy metal fusion cage. This method is very different from the elastic modulus of the human body, and has high rigidity, which is not conducive to osseointegration. [0005] The third meth...

Claims

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Application Information

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IPC IPC(8): A61F2/44A61L27/32A61L27/30A61L27/34
CPCA61F2/4455A61F2002/30593A61F2310/00796A61F2310/00976
Inventor 杨大诚李梅许慧董骧
Owner BEIJING NATON TECH GRP CO LTD
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