Patent ID: 7998164
Filing Date: 2011-08-16
Classification: A61F,A61M

Abstract:
1. A filter system, comprising: an intravascular filter including a plurality of elongated filter legs operatively coupled to an apical head; wherein the apical head has a proximal end and a distal end; wherein the elongated filter legs extend proximally of the proximal end of the apical head when the filter is deployed within a blood vessel; a filter sheath having a first end, a proximal end, and an interior lumen adapted to contain the intravascular filter; and a centering hoop including an elongated wire adapted to assume a preset shape when deployed within a blood vessel, wherein the centering hoop is disposed distally of the distal end of the apical head and radially expands against the inner wall of the blood vessel when the filter is deployed; wherein the centering hoop is slidably disposed within an interior lumen of the apical head; wherein the elongated wire includes a first end and a proximal end; wherein the preset shape of the elongated wire includes a radial section and a hoop section, the hoop section extending circumferentially at least one full revolution about a generally longitudinal axis of the intravascular filter and filter sheath.