Total occlusion guidewire device

摘要

A guidewire comprising: a flexible wire; a spreader attached to a distal end of the flexible wire, the spreader having a proximal end and a distal end, a plurality of struts extending therebetween, a smaller first diameter for insertion into a lumen, and a second larger diameter for expanding the lumen; and a generally solid core wire. A distal end of the solid core wire is slidably insertable into a proximal end of the flexible wire, and the distal end of said core wire is permanently attached to the distal end of the spreader. The spreader has the smaller first diameter when the solid core wire is slidably advanced through the flexible wire and the spreader and the struts assume a position substantially parallel to said core wire. The spreader has said larger second diameter when the flexible wire and the spreader are slidably advanced over the core until the struts assume a position substantially removed from the longitudinal axis of the core wire.