Trabecular fusion cage

Abstract

The invention discloses a trabecular bone fusion device for implanting into an intervertebral disc, comprising: a trabecular bone cover (1), which is made of titanium alloy powder material, and is provided with an accommodating space inside, and the side of the trabecular bone cover The wall is provided with a plurality of through holes through which bone can grow into the trabecular bone outer cover (1) to stably fix the trabecular bone fusion prosthesis in the intervertebral disc; the inner liner (2) is made of polyetheretherketone material, fixed in the accommodating space of the trabecular bone coat (1), and can be fused with the bone growing into the through hole of the trabecular bone coat. In the trabecular fusion device of the present invention, the polyether ether ketone lining can provide good fusion, and the trabecular bone coat can make the bone grow in more. This product does not need bone grafting, which overcomes the singleness of the material and improves the performance of the product. The problem of greatly discounting, while taking into account the better fusion effect and bone ingrowth effect, the patient recovers quickly after surgery, and the fusion effect is good.

Description

technical field [0001] The invention relates to a medical device, in particular to a bone trabecular fusion device implanted in an intervertebral disc. Background technique [0002] The principle of treatment for lumbar instability is that for patients with obvious nerve compression symptoms that are not relieved after conservative treatment, it is listed as an indication for surgical treatment. Surgical treatment initially adopts decompression of the intervertebral disc and excision of the nucleus pulposus. The protruding nucleus pulposus and annulus fibrosus tissue are removed through a posterior incision of the intervertebral disc, in order to expand the decompression of the spinal canal and relieve the compression on the spinal cord and nerve roots. However, because the resection of the lamina destroys the structure of the spine, it will cause new instability factors in the spine and the compression of the intervertebral space has not been restored, resulting in a high r...

AI Technical Summary

Problems solved by technology

[0004] Traditional cage materials are pure polyether ether ketone (PEEK) or pure trabecular bone material. The singleness of the material greatly reduces the performance of the product. It has a good fusion effect but no bone ingrowth effect. The two cannot coexist , resulting in slow recovery of patients after surgery, and the fusion effect is relatively poor

In addition, if figure 1 and figure 2 As shown, the current traditional fusion surgery requires the implantation of two fusion devices. The operation is complicated and difficult, which will lead to large and multiple wounds, more bleeding, slow recovery of patients after surgery, and relatively poor fusion effect

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