Patent ID: 8016854
Filing Date: 2011-09-13
Classification: A61F

Abstract:
1. An embolic filtering device for filtering embolic debris from a patient's vasculature, comprising: a filtering assembly including an expandable strut assembly and a filter element attached thereto, the strut assembly including a plurality of struts arranged to create a desired composite strut structure which is adapted to move between a collapsed position and an expanded position, the strut structure including: flexing portions which flex when subjected to bending forces that may be developed when the strut assembly is being delivered through the patient's vasculature, the struts forming the flexing portions being made from a first layer of material having a first wall thickness; and stable portions that remain relatively stiff when being delivered through the patient's vasculature, the struts forming the stable portions being made from the first layer of material along with a second layer of material having a second wall thickness deposited on the first layer to form a composite wall thickness for the stable portions that is greater than the first wall thickness, wherein each strut has a particular strut width, the strut widths in the stable portions being generally greater than the strut widths in the flexing portions, the strut widths in the flexing portions defining a nominal strut width and the strut width in the stable portions defining a greater-than-nominal strut width.