| abstract |
The invention provides a degradable magnesium metal nail for fixing a patch and a using method thereof, wherein the degradable magnesium metal nail comprises a metal nail body, the metal nail body is a metal wire wound along a spiral direction, and the metal wire is made of pure magnesium or magnesium alloy; the two ends of the metal nail body are respectively provided with a nail head and a nail tail, the nail head is of a triangular pyramid structure, the nail tail is of a hemispherical fillet structure or a bending structure, and the metal nail manufacturing process comprises one or more times of stress relief annealing. The metal nail can be degraded in vivo, so that immune rejection and foreign body reaction caused by the long-term existence of the implant in vivo are avoided, a local weak alkaline environment is formed at the implanted part by degradation, and the metal nail has an antibacterial effect; the triangular pyramid structure of pin fin has strengthened the nail to the puncture ability of tissue, and the damage of nail to human tissue has been alleviated to the hemisphere fillet structure or the structure of buckling of nail tail, and the residual stress on the finished product is effectively released in the annealing of metal nail destressing, reduces the corrosion rate after the implantation. |