Devices and methods for centering an intravascular filter within a blood vessel are disclosed. A filter system in accordance with an exemplary embodiment of the present invention may include an intravascular filter, a filter sheath adapted to contain the intravascular filter, and a centering member adapted...http://www.google.com.au/patents/US20060203769?utm_source=gb-gplus-sharePatent US20060203769 - Intravascular filter with centering member
