Patent ID: 8512352
Filing Date: 2013-08-20
Classification: A61B,A61F

Abstract:
1. An apparatus comprising: a microcatheter having a size and flexibility to navigate within a neurovascular region of the patient; a plurality of wires joined into a main bundle and extending from the microcatheter, where at least a first portion of the plurality of wires diverge from the main bundle to form a first shape; a plurality of subsets of wires diverging from the first shape; a second shape thrilled by the convergence of the plurality of subsets of wires; where at least one wire diverges from the second shape to form a blood permeable filter member shape composing a mesh pattern; where the first shape has a first expanded profile when unconstrained, such that on deployment in the neurovascular region the first shape expands towards the first expanded profile; where the second shape is collapsible to fit within the microcatheter and has a second expanded profile when unconstrained, such that on deployment in the neurovascular region the second shape expands towards the second expanded profile; where the plurality of subsets of wires extends between the first and second shapes, and are spaced apart on each respective shape such that spacing the first and second shapes causes the individual subsets to move towards a wall of a vessel in the neurovascular region; where the blood permeable filter member shape is collapsible to fit within the microcatheter and expandable to expand in the neurovascular region upon deployment; and where the second shape is configured to assume the expanded profile independently of the first shape.