Patent ID: 7056328

Claim:
An apparatus for removing a solid object from a body canal or vessel, the apparatus comprising: a wire frame; a coil of wire having two ends and helically wound in the form of a cylinder defining a lumen therethrough, said coil of wire being capable of rotation or linear movement when positioned on a guide wire, said coil of wire further configured to be firm axially, but pliable laterally, such that said coil of wire can conform to twists and bends taken by said guide wire during manipulation and advancement of said guide wire; a sack affixed to said wire frame, said sack having an apex, wherein said apex of said sack is connected to one of said ends of said coil of wire; control arms attached to said wire frame and having proximal ends connected near the other end of said coil of wire via a junction; whereby said coil of wire can bend and follow a path of said guide wire while avoiding axial elongation of said coil of wire.