Patent ID: 8114073

Claim:
An apparatus, comprising: a catheter defining a distal portion, a distal end, a proximal end and a lumen; a structure, associated with the distal end of the catheter, including a first member having a distal portion fixedly positioned adjacent to the catheter distal end, a proximal portion that extends through catheter lumen to the catheter proximal end and is longitudinally movable relative to the catheter, and a loop portion between the distal portion and the proximal portion, and a second member having a distal end attached to the first member loop portion, a distal portion that extends through the distal end of the catheter, and a proximal portion that extends through the catheter lumen to the catheter proximal end and is longitudinally movable relative to the catheter; and at least one operative element mounted on the first member loop portion.