Patent ID: 8777977
Filing Date: 2014-07-15
Classification: A61F,A61M

Abstract:
1. A self-centering vena cava filter catheter, comprising: a catheter body with a distal end and a proximal end, the catheter body having a first opening in communication with a first lumen of the catheter body and a second opening in communication with a second lumen of the catheter body; and an expansible vena cava filter member coupled to and circumferentially surrounding the catheter body such that the catheter body is generally centered within the vena cava filter member, the expansible vena cava filter member consisting essentially of a plurality of longitudinal struts forming a first cone co-axial with the catheter member and a second cone co-axial with the catheter member and extending in a direction opposite the first cone, the first cone being configured with a first open area sufficient to permit thrombus to pass into an area bounded by the plurality of longitudinal struts and the second cone being configured with a second open area sufficient to capture thrombus passing into the area bounded by the plurality of longitudinal struts, the first and second open areas having different sizes of open areas, one of the first cone or the second cone being circumferentially coupled in a fixed relation to the catheter body and the other of the first cone or the second cone being circumferentially and moveably coupled to the catheter body and movable relative to the fixed one of the first cone or second cone to accommodate expansion of the expansible vena cava filter member, the expansible vena cava filter member configured to center at least a portion of the catheter body within a blood vessel lumen.