A tissue or foreign body extractor. A coil member is provided, and in one embodiment of the invention, is disposed within the lumen of a needle. The needle includes one or more cutting edges for cutting into tissue located in the body, a core of the tissue being received in the lumen. The coil member...http://www.google.es/patents/US6544195?utm_source=gb-gplus-sharePatente US6544195 - Tissue of foreign body extractor
