A high aspect ratio biopsy needle achieves reliable performance with large solid sample size by means of a variety of features and combinations thereof, including support to prevent bending, reinforcement of the needle, and cutting edges arranged to resist deformation....http://www.google.es/patents/US20100030108?utm_source=gb-gplus-sharePatente US20100030108 - LARGE SAMPLE LOW ASPECT RATIO BIOPSY NEEDLE
