Patent ID: 8100962

Claim:
A flow-deflecting medical device for implantation in a body vessel, comprising: a support structure having compressed and expanded configurations, a lengthwise axis, first and second opposing sides relative to the lengthwise axis, a first support structure portion positioned on the first side, and a second support structure portion positioned on the second side and distal to the first support structure portion, the support structure defining a lumen; and first and second flow-deflecting members attached to the support structure; the first flow-deflecting member having a first edge attached to the first support structure portion and a second edge free of the support structure, and being at least partially evertible between a first position in which the second edge is positioned proximal to the first edge and a second position in which the second edge is positioned distal to the first edge; the second flow-deflecting member having a third edge and a fourth edge, the third edge attached to the second support structure portion such that the third edge is positioned distal to the first support structure portion and the first edge of the first flow-deflecting member relative to the lengthwise axis of the support structure, the fourth edge being free of the support structure and being at least partially evertible between a third position in which the fourth edge is positioned proximal to the third edge and a fourth position in which the fourth edge is positioned distal to the third edge; the second and fourth edges extending across the lumen and creating a central orifice; wherein antegrade flow in said body vessel contacts the first and second flow-deflecting members and urges the first flow-deflecting member into the first position and the second flow-deflecting member into the third position to allow the antegrade flow to flow through said body vessel substantially unobstructed by said flow-deflecting medical device; wherein retrograde flow in said body vessel contacts the first and second flow-deflecting members and urges the first flow-deflecting member into the second position and the second flow-deflecting member into the fourth position to minimize the central orifice and redirect the retrograde flow; and wherein a portion of the second edge of the first flow-deflecting member is positioned opposite the first edge of the first flow-deflecting member and a portion of the fourth edge of the second flow-deflecting member relative to the lengthwise axis of the support frame when the first flow-deflecting member is in the second position.