Patent ID: 7976560

Claim:
An embolic filtering device for capturing embolic debris in a body fluid flowing within a body vessel, comprising: a guide wire; a support frame having a pre-deployment collapsed position and a deployed expanded position, the support frame including a first half frame having a first control arm and a second control arm, the first control arm being connected to the second control arm by a partial loop and a second half frame having a first control arm and a second control arm, the first control arm being connected to the second control arm by a partial loop, the partial loops of the first and second half frames cooperating to form a composite loop when the support frame is in the deployed expanded position, the first and second control arms of the first half frame being disposed distally of the composite loop and the first and second arms of the second half frame being disposed proximally of the composite loop, the first half frame including a third control arm attached to the partial loop of the first half frame, the third control arm being disposed proximally of the composite loop, wherein each of the first and second control arms of the second half frame have an end connected to a collar and the third control arm of the first half frame has an end connected to the same collar; and a filtering element having a proximal inlet opening and a plurality of distal outlet openings, the outlet openings allowing the body fluid to flow through the filtering element but retaining embolic debris within the filtering element, and the inlet opening being larger than the outlet openings, the support frame opening the proximal opening of the filtering element when the support frame is in the deployed expanded position.