Patent ID: 7476232
Filing Date: 2009-01-13
Classification: A61M

Abstract:
1. A medical device comprising: a distal assembly having a radially expandable body defining a passageway therethrough; and a control member extending from the distal assembly to a proximal end of the device, the control member including a plurality of wires coupled to a distal end of the body and extending to the proximal end of the device and a plurality of rods coupled to a proximal end of the body and extending to the proximal end of the device, wherein the plurality of wires comprise two wires, the plurality of rods comprise two rods, and the body comprises at least a first helical coil and a second helical coil interwoven with each other, the first helical coil being wound in a clockwise direction and the second helical coil being wound in a counterclockwise direction, one wire of the two wires being coupled to a distal end of the first helical coil and uncoupled to a distal end of the second helical coil, a distal end of one rod of the two rods being coupled to a proximal end of the first helical coil and uncoupled to a proximal end of the second helical coil, wherein actuation of the control member applies a compressive force to the body causing the body to radially expand and a cross-sectional area of the passageway to increase substantially uniformly from the proximal end of the body to the distal end of the body.