A guided filter system for temporary placement of a filter in an artery or vein is disclosed. The system includes a guidewire slideable through a wire guide included in a distal region of a support wire. The support wire has an expandable filter, which is operable between a collapsed or enlarged condition....http://www.google.com/patents/US20040059372?utm_source=gb-gplus-sharePatent US20040059372 - Guided filter with support wire and methods of use