Manufacturing method of metal hollow microneedle, and metal hollow microneedle

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a metal hollow microneedle having a tapered portion and having conductivity, and to provide such a metal hollow microneedle. According to one aspect of the present invention, there is a method for manufacturing a hollow metal needle using a dieless drawing process, in which a tube made of a superplastic metal material is locally heated to increase the tensile speed. Provided is a manufacturing method comprising a step of pulling out the tube while controlling to form a tapered portion in the tube, and a step of forming the tapered portion and then further pulling out the tube to break the tube. [Selection diagram] Fig. 3