Patent ID: 7048752
Filing Date: 2006-05-23
Classification: A61B,A61F,B21F

Abstract:
1. A device for filtering emboli from blood flowing through a lumen defined by the walls of a vessel comprising: a guidewire; a filter element carried on a distal portion of the guidewire, the filter element having a distal end, the guidewire extending to at least the distal end of the filter element, the filter element being expandable from a collapsed delivery configuration when the filter is constrained to an expanded deployed configuration when the filter element is unrestrained, the filter element having a shape in the expanded configuration which forms a cavity having a proximally facing opening defining a proximally facing lip; and a plurality of retraction members, each retraction member having a distal portion which engages the proximally facing lip of the filter element and a proximal end connected to the guidewire and an intermediate portion between the proximal end and distal portion, the retraction members being configured such that when the intermediate portions of the retraction members are moved towards the guidewire the proximally facing lip of the filter element is drawn radially inwardly in the direction of the guidewire.