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Spinal fusion cage

A fusion device and spine technology, applied in spinal implants, medical science, prostheses, etc., can solve the problems of easy loosening of vertebral body fusion devices and poor new bone generation ability, and achieve high mechanical strength, promote attachment and load bearing powerful effect

Inactive Publication Date: 2016-11-16
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The special structural design of the spinal fusion device not only ensures the braking, fixation and long-lasting support performance, but also greatly improves the fusion rate of the implant and surrounding tissues, completely solving the problem of easy loosening of the vertebral body fusion device and new problems. Problems with poor bone formation

Method used

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] Such as figure 1 As shown, a spinal fusion device has a three-dimensional interconnected porous structure as a whole, and is formed by braiding and sintering metal wires; the preparation material of the metal wires can be pure titanium or titanium alloys, including but not limited to pure Ti, Ti-6Al-4V; it can also be pure tantalum or tantalum alloy. In this embodiment, the metal wire is pure titanium wire. The spinal fusion device of the present invention is columnar as a whole, and the cross section can be circular, square, circular or with a counterbore, and can also be designed according to the actual situation; in this embodiment, the cross section of the spinal fusion device is a smooth transition square. In this embodiment, the porosity of the spinal cage is 80%, and the average pore size is 500um.

[0022] The prepa...

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Abstract

The invention discloses a spinal fusion cage, and belongs to the technical field of bio-medical metal materials, in particular a homogeneous hyper-elastic porous interbody fusion cage. The spinal fusion cage provided by the invention has a novel structure. The spinal fusion cage, through special structural design, not only guarantees braking, fixing and durable supporting performances but also greatly improves a fusion rate between an implant and surrounding tissues, so that the problems that the spinal fusion cage is easily loosened and is poor in new bone formation capacity are thoroughly solved. The spinal fusion cage disclosed by the invention is integrally represented as a three-dimensional interlinked porous structure and is made by weaving and sintering metal wires; and the metal wires are made from pure titanium, titanium alloy, pure tantalum or tantalum alloy.

Description

technical field [0001] The invention belongs to the technical field of biomedical metal materials, and in particular relates to a homogeneous superelastic porous intervertebral fusion device which can be used in spine, lumbar and thoracic operations. Background technique [0002] The spine has the important function of supporting the weight of the upper body and the head, protecting the internal organs and the central nervous system. The spine gradually degenerates with age, resulting in decreased stability and functional impairment of the spine, causing various pains and inconveniences to patients. At present, fusion technology is one of the main surgical methods in spinal surgery, and fusion cage is the core part of fusion surgery, which mainly undertakes the role of rigid support and induction and conduction of new bone generation, so as to realize the true fusion of adjacent vertebral bodies. [0003] PEEK is considered to be an ideal material for intervertebral fusion,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44
CPCA61F2/4455A61F2310/00023A61F2310/00131
Inventor 张二林王晓燕李维国
Owner NORTHEASTERN UNIV
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