A vibration assisted needle device is disclosed for use in medical procedures such as needle aspiration biopsies. Reciprocation of the needle, such as a biopsy needle, eases the advance of the needle through tissue, penetration of the site of interest and the collection of sample at a site of interest....http://www.google.de/patents/US7008383?utm_source=gb-gplus-sharePatent US7008383 - Method of conducting a needle biopsy procedure
