A biopsy needle for removal of tissue from human or animal bodies incorporates a tubular elongated body (1) and a plunger (7) arranged both slidably and rotatably within the body. The plunger is pointed at one end and has a tissue-removing edge directed backwardly from the pointed end and formed on a...http://www.google.es/patents/US5301684?utm_source=gb-gplus-sharePatente US5301684 - Biopsy needle
