Titanium mesh fusion device for spinal interbody fusion and preparation method thereof

Abstract

The invention discloses a titanium mesh fusion device for spinal interbody fusion. The titanium mesh fusion device comprises a first half cylinder body and a second half cylinder body, wherein the first half cylinder body and the second half cylinder body are connected through buckles. The first half cylinder body is provided with a first buckling end, and the first buckling end is provided with aconvex part; the second half cylinder body is provided with a second buckling end, and the second buckling end is provided with a concave part; and the first half cylinder body and the second half cylinder body are connected in a buckling way through matching of the convex part and the concave part. According to the invention, the titanium mesh fusion device with a split type design is adopted, so that difficulty of intervertebral implantation through a smaller operation field and operation space during spinal tumor operation can be reduced, and possibility of minimally invasive operation isachieved. Through the design of the convex part and the concave part, the assembled titanium mesh fusion device has good axial compression resistance, so that good axial support can be provided; and meanwhile, the assembled titanium mesh fusion device has performance of rotation resistance and shear stress resistance.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a titanium mesh fusion device for spinal intervertebral fusion and a preparation method thereof. Background technique [0002] The treatment of spinal vertebral body tumors requires vertebral body resection, which often leaves a large defect after vertebral body resection, and needs to be implanted with a large size titanium mesh fusion device or autologous ilium to maintain the stability of the spine, and the height of the implant is average Around 40-50mm. Although autologous bone is an ideal material for bone grafting, it has good bone growth activity and high fusion rate, but it will increase the operation time and intraoperative blood loss, and may cause infection, pain, and fractures in the donor area. disease. The in situ bone grafting method using titanium mesh cage is widely used by spine surgeons because of its convenient operation, avoiding complications in the donor a...

AI Technical Summary

Problems solved by technology

[0003] However, the existing titanium mesh fusion devices are often designed as one-piece. During the operation, it is necessary to increase the exposure of the surgical site, and it is often necessary to cut off one or two nerve roots to implant the integrated titanium mesh fusion device into the vertebral body. In the thoracic spine, this kind of operation can be realized because the intercostal and subcostal nerves of the thoracic spine are not very important relative to their functions. Rhizotomy will cause motor and sensory dysfunction in the lower extremities

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