A protector is attached for use to a needle body having a main needle body and an enlarged-diameter section having an outer diameter greater than that of the main needle body. The protector includes a platelike protector body made of a metal material. The protector body includes a first section formed...http://www.google.es/patents/US8162904?utm_source=gb-gplus-sharePatente US8162904 - Needle protector
