Patent ID: 8252018
Filing Date: 2012-08-28
Classification: A61B,A61F

Abstract:
1. An embolic protection device for capturing emboli during treatment of a stenotic lesion in a body vessel, the device comprising: an elongated shaft having a proximal portion and a distal portion extending from the proximal portion; and an expandable filter formed helically about the distal portion of the elongated shaft, the expandable filter formed integrally with the elongated shaft such that the elongated shaft and the expandable filter have a one-piece construction, the expandable filter being configured to helically close defining a collapsed state for delivery and retrieval of the device, the expandable filter being configured to helically open defining an expanded state for capturing emboli during treatment of the stenotic lesion in the body vessel, the expandable filter having a plurality of filter portions each helically and separately extending from the elongated shaft, the filter portions being directly adjacent to each other, each of the plurality of filter portions defining a proximally faced opening when the expandable filter is in the expanded state, the plurality of filter portions being of a one-piece construction with the elongated shaft and having filter holes formed therethrough, wherein each of the plurality of filter portions defines a conical shape and overlaps with an adjacent filter portion.