According to one aspect of the present invention, an aspirating needle for collecting a specimen includes an elongated body that includes a hollow cannula portion that is open at both a proximal end and a distal end for placement at a specimen site to collect and permit aspiration of the specimen from...http://www.google.com.au/patents/US20070219460?utm_source=gb-gplus-sharePatent US20070219460 - ASPIRATION NEEDLES
