Patent ID: 8419748

Claim:
A device for removing a thrombus from a body cavity, the device comprising: a flexible wire having a proximal end and a distal end; an elongated shaft having a proximal portion and a distal portion, the proximal portion attached to the distal end of the flexible wire and distally extending therefrom to the distal portion; and an expandable member formed helically about the elongated shaft, the expandable member being configured to helically close defining a collapsed state for delivery and retrieval of the device, the expandable member being configured to helically open defining an expanded state for removing a thrombus from the body cavity, the expandable member having a plurality of member portions helically opening and extending from the elongated shaft, each of the member portions helically extending proximally at a predetermined angle relative to the elongated shaft and defining a helical proximally faced opening when the member portion is in the expanded state, the expandable member is disposed along a longitudinal axis, the expandable member being helically closed in the collapsed state when the elongated shaft is rotated about the longitudinal axis in a first direction, wherein adjacent member portions overlap each other.