Patent ID: 7878967

Claim:
A hemodynamic assist device comprising: an elongated shaft portion generally defining an axis A-A and having a first shaft end and a second shaft end and a guide aperture having a closed proximal end, the guide aperture extending at least partially between the first shaft end and the second shaft end; a rotary mover coupled to said shaft portion adjacent said first shaft end; a collapsible blade member disposed substantially along the length of said shaft portion, wherein said blade member is defined by a first blade end member and a second blade end member, wherein said first blade end member is connected to said shaft portion adjacent said first shaft end and wherein said second blade end member is connected to said shaft portion and wherein said blade member includes an inner helical edge and at least a portion of said inner helical edge is not coupled to said shaft portion along its length between said first blade end member and said second blade end member so as to define a gap between said inner helical edge and an outer surface of said shaft portion, wherein said blade member is selectively rotatable by said rotary mover about the axis A-A; and a guide member having a guide member proximal end and a guide member distal end, wherein the guide member proximal end is interposed within the guide aperture in a telescoping manner such that the guide member is axially moveable within the guide aperture such that the guide member is moveable relative to the shaft portion.