Patent 6921387 was granted and assigned to Mayo Foundation for Medical Education and Research (MFMER) on July, 2005 by the United States Patent and Trademark Office.
A hollow medical needle having a bevel face defining a needle tip and cutting surface that create a first incision. The needle additionally has a separate cutting blade extending outward from the needle. The blade is positioned adjacent the bevel face to create a second incision which intersects the first incision made by the bevel face cutting surface.