A medical device comprising a tubular member having a proximal end, a distal end, and a lumen extending therebetween. An adjustable filter is provided having a frame and a mesh disposed about the frame. The frame is generally circular when deployed and has a first point, a first arc extending 180° from...http://www.google.com.au/patents/US7014648?utm_source=gb-gplus-sharePatent US7014648 - Adjustable blood filtration device
