Patent ID: 7799049

Claim:
A retrievable intravascular filtering device having leading and trailing ends and a filter longitudinal axis, comprising: a hub including a graspable member; a plurality of elongate arms each having a joining portion joined to the hub, an engaging portion, and an arm longitudinal axis, said elongate arms being adapted and configured to shift between an expanded position and a collapsed position within a blood vessel, the arms being configured to extend outwardly away from the filter longitudinal axis in the expanded position; and anchoring means comprising a wall contacting portion for removably securing the intravascular filtering device to the blood vessel, said anchoring means having a first configuration in which at least a portion of the wall contacting portion is disposed in a direction generally parallel to the filter longitudinal axis and opposed to a direction from the hub toward the engaging portion of the plurality of elongate arms and a second configuration in which the wall contacting portion is disposed in a direction generally along the filter longitudinal axis in the direction from the hub toward the engaging portion of the plurality of elongate arms, said anchoring means being adapted to bend and deflect from the first configuration to the second configuration in response to a longitudinal force applied to the hub; wherein said wall contacting portion includes a distal region of greater flexibility that is formed by a reduced cross-sectional area.