Patent ID: 8475489

Claim:
A luminal occlusion device comprising: a tension member having a proximal end and a distal end; an elongate shaft having a guide structure along at least a distal portion thereof for receiving the tension member and permitting the tension member to shift between a distally extended position and a proximally retracted position relative to the shaft; and a flat film having an axial receptacle for receiving a distal portion of the tension member, a first wing on one side of the receptacle, and a second wing on the other side of the receptacle, wherein a distal end of the film is attached to a distal location on the tension member and a proximal end of the film is attached to a distal end of the elongate shaft, a first elastic wire extending along an outer peripheral edge of the first wing and a second elastic wire extending along an outer peripheral edge of the second wing, each wire movably coupled at a distal end to the tension member and at a proximal end to the elongate shaft, wherein proximally translating the tension member relative to the shaft axially compacts the wires to compact the flat film and distally translating the tension member relative to the shaft straightens the wires to stretch the film.