Patent ID: 8419658

Claim:
A medical guidewire comprising: an elongated tubular member including a proximal region having a proximal end and a distal region having a distal end, the tubular member defining an inner lumen and having an outer surface, at least the distal region of the tubular member including a plurality of slots formed and defined by the tubular member that are configured to increase a lateral flexibility of the tubular member; a core member attached to the tubular member, the core member including a proximal region having a proximal end and a distal region having a distal end, wherein at least a portion of the core member is disposed within the lumen of the tubular member, wherein the distal end of the tubular member extends distally beyond the distal end of the core member; and one or more thread member disposed on the outer surface of the tubular member and configured such that when the tubular member is rotated about a longitudinal axis, the one or more thread member is capable of engaging an occlusion in a vessel of a patient and pulling at least a portion of the tubular member through the occlusion.