Bionic intervertebral fusion cage

A technology of intervertebral fusion device and fusion device, which is applied in the field of bionic intervertebral fusion devices, can solve the problem of multi-level porous material properties such as uneven strength and elastic modulus, which cannot meet the functional requirements of bionic bone restorations, and cannot be truly and effectively controlled Hole size and other issues at all levels, to achieve the effect of being conducive to bearing external force, large friction force, and simplified structure

Inactive Publication Date: 2017-07-14
CHONGQING RUNZE PHARM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing multi-level porous materials have unreasonable setting of the pore structure at all levels in the structure, and the size of the pores at all levels cannot be truly and effectively controlled during the preparation process, so they cannot meet the functional requirements as a bionic bone restoration.
In addition, as a bionic artificial bone, the material itself needs to be uniform in application, that is, the size of the pores and the distribution of the pores are uniform, so that the performance is unif

Method used

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  • Bionic intervertebral fusion cage
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  • Bionic intervertebral fusion cage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] As attached Figure 1-4 As shown, a bionic intervertebral fusion cage includes a cage body; the cage body is divided into three layers: an upper part 5, a middle part 6 and a lower part 7; the upper end face of the upper part 5 and the lower end face of the lower part 7 are convex curved surfaces The two opposite sides of the middle part 6 are provided with multiple rows of staggered through holes 8, and the middle part 6 is provided with two clamping holes 9 on the other two opposite sides adjacent to the side face with the through holes 8 , And the clamping holes 9 are intersected with two adjacent rows of through holes 9 located in the middle of the multiple rows of staggered through holes 8; the upper part 5 and the lower part 7 are made of porous tantalum material with an average pore diameter of 400-1000 μm, The porosity is 60-80%; the middle part 6 of the cage body is made of a dense medical metal material titanium alloy, and after electron beam melting, the fixed ...

Embodiment 2

[0031] A bionic intervertebral fusion cage, the structure of which is the same as that of the bionic intervertebral fusion cage described in Example 1. The difference between the two is only that the upper part 5 and the lower part 7 of the bionic intervertebral fusion cage in this example are composed of more Grade porous metal materials; among them, multi-grade porous metal materials such as Figure 5-7 As shown, 1 is the primary cavity, 2 is the cavity wall of the primary cavity; the cavity wall 2 of the primary cavity 1 consists of a smaller secondary cavity 3 and a cavity wall 4 surrounding the secondary cavity 3 Composition; combined with the enlarged view of the cavity wall 2 and the BB cross-sectional view, the secondary cavity 3 is three-dimensionally through; and so on, the cavity wall 4 of the secondary cavity 3 is composed of three smaller than the secondary cavity 3 The cavity and the cavity wall surrounding the tertiary cavities are formed. The tertiary cavities ar...

Embodiment 3

[0044] As attached Figure 1-4 As shown, a bionic intervertebral fusion cage includes a cage body; the cage body is divided into three layers: an upper part 5, a middle part 6 and a lower part 7; the upper end face of the upper part 5 and the lower end face of the lower part 7 are convex curved surfaces The two opposite sides of the middle part 6 are provided with multiple rows of staggered through holes 8, and the middle part 6 is provided with two clamping holes 9 on the other two opposite sides adjacent to the side face with the through holes 8 , And the clamping holes 9 are intersected with two adjacent rows of through holes 9 located in the middle of the multiple rows of staggered through holes 8; the upper part 5 and the lower part 7 are made of multi-stage porous metal material, and the middle part of the cage body 6 is made of dense medical metal material titanium alloy, and after electron beam melting, the fixed connection with the upper part 5 and the lower part 7 of t...

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PUM

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Abstract

The invention relates to a bionic intervertebral fusion cage comprising a fusion cage body; the features are that the fusion cage body comprises an upper portion (5), a middle portion (6) and a lower portion (7); the top end face of the upper portion (5) and the bottom end face of the lower portion (7) are in a convex arced surface; two opposite side faces of the middle portion (6) are provided with a plurality of rows of through holes (8) arranged in a staggering manner; the upper portion (5) and the lower portion (7) are made of porous metal material; the bionic intervertebral fusion cage is concise in structure, stable in connection, proper in elastic modulus, and has certain toughness.

Description

Technical field [0001] The invention relates to an intervertebral fixation device, in particular to a bionic intervertebral fusion cage. Background technique [0002] At present, intervertebral disc herniation and intervertebral instability caused by spinal degeneration are common and frequently-occurring diseases that plague mankind in today's society. In this regard, the surgical method of implanting an artificial intervertebral fusion cage is a commonly used choice in clinical practice, which not only greatly improves the effect of intervertebral fusion, but also makes it possible to maintain a normal height between the vertebral bodies. [0003] Although the implantation of the intervertebral fusion cage can achieve relatively satisfactory short-term curative effects, it still exists: the stability of the product is poor after the initial implantation, and the locking screw is often required to assist the fixation, and the structure is complex; the elastic modulus of the produc...

Claims

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Application Information

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IPC IPC(8): A61F2/44
CPCA61F2/4455A61F2310/00023A61F2310/00131
Inventor 叶雷
Owner CHONGQING RUNZE PHARM CO LTD
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