THE METHOD FOR MANUFACTURING HALLOW MICRO NEEDLE STRUCTURES

摘要

PURPOSE: A method for manufacturing a hallow micro needle is provided to realize minimum pain control. CONSTITUTION: A method for manufacturing a hallow micro needle comprises the following steps. An injection mold with a penetration groove is formed. The injection mold is filled with photosensitive liquid of a viscosity material. The photosensitive liquid is compressed through a penetration hole. The compressed photosensitive liquid is hardened to form a photosensitive liquid structure of a needle shape. A seed film is formed on the surface of the photosensitive liquid structure. A metal plating film is formed on the seed film. The end of the photosensitive liquid structure with the metal plating film is inclined. The photosensitive liquid structure inside the metal plating film is removed to form a hollow.