Patent ID: 7563247

Claim:
A medical device system, comprising: a delivery shaft with a proximal end portion and a distal end portion having a longitudinal axis; a tubular member secured to the distal end portion of the delivery shaft and having a proximal end portion, a distal end portion, and a tubular wall comprising a substantially non-porous sheet of material formed into a tubular shape with an outer surface and an inner surface that defines an interior passageway extending along the axis between a proximal open end along the proximal end portion of the tubular member and a distal open end along the distal end portion of the tubular member; a proximal radial support member secured to the distal end portion of the delivery shaft and comprising a ring-shaped support wire also secured substantially along a circumference of the proximal end portion of the tubular member; and a distal radial support member comprising a ring-shaped support wire secured substantially along a circumference of the distal end portion of the tubular member; wherein the tubular member has a distally tapered shape that tapers from a proximal outer diameter along the proximal end portion to a distal outer diameter that is less than the proximal outer diameter along the distal end portion of the tubular member, wherein the proximal radial support member is adjustable between a collapsed condition and a radially expanded condition having an expanded circumference, and the proximal end portion of the tubular member is adjustable between a collapsed condition and a radially expanded condition having an expanded circumference, such that the expanded circumference of the proximal radial support member in the radially expanded condition corresponds to the expanded circumference of the proximal end portion of the tubular member in the radially expanded condition, wherein the distal radial support member is adjustable between a collapsed condition and a radially expanded condition having an expanded circumference, and the distal end portion of the tubular member is adjustable between a collapsed condition and a radially expanded condition having an expanded circumference, such that the expanded circumference of the distal radial support member in the radially expanded condition corresponds to the expanded circumference of the distal end portion of the tubular member in the radially expanded condition, and wherein the expanded circumference of the proximal radial support member in the radially expanded condition is greater than the expanded circumference of the distal radial support member in the radially expanded condition.