Silver needle for treating anal stenosis and threading method thereof

The invention relates to the technical field of anus treatment tools and methods, in particular to a silver needle for treating anus stenosis and a threading method thereof.The silver needle comprises a silver raw material and an alloy material, and the preparation process comprises the following steps that the silver raw material and the alloy material are smelted to obtain silver alloy; the obtained silver alloy is made into a needle shape through a mold forming process; carrying out preliminary hardness test; carrying out heat treatment distinguishing, and carrying out quenching treatment on the pin which is preset as a male pin to improve the hardness; carrying out annealing treatment on the part which is preset as a female needle so as to reduce the hardness of the part; performing surface treatment on a silver needle body, and adding tiny grooves or textures on the needle body by using a laser etching technology; performing final hardness test on the manufactured female needle and male needle; and steri