Patent ID: 7757692

Claim:
A device for limiting air flow in an air passageway in a lung, the device comprising: an elongated frame assembly for implantation in the lung, the elongated frame assembly comprising a proximal end and a distal end; the elongated frame assembly further comprising a plurality of support members extending in a proximal direction from the distal end, each of the plurality of support members comprising a bent portion, the bent portion being positioned along a distal portion of each of the plurality of support members; a flexible membrane overlying at least an outer surface of at least the distal portion of each of the plurality of support members including the bent portion; a proximally positioned concave recess being defined at least in part by the plurality of support members and the flexible membrane, the proximally positioned concave recess comprising a proximally facing substantially circular opening, wherein the flexible membrane forms a smooth outer surface and the plurality of support members is positioned between the concave recess and the smooth outer surface; at least one anchor being distally positioned relative to the flexible membrane; the device defining an obstructing structure configured to be implanted into the air passageway upstream from a target region such that the device precludes air from flowing into the target region past the device while allowing air to flow out of the target region along a path between a portion of the flexible membrane and a wall of the air passageway.