Patent ID: 7769470

Claim:
A device for modulating a volume of neural tissue, comprising: a cannula having a proximal end, a distal end, and a lumen extending to at least the distal end; a plurality of leads having at least one electrode disposed thereon, wherein the plurality of leads are configured to reciprocate between a retracted position, in which the plurality of leads are radially constrained within the lumen, and an extended position, in which the plurality of leads deploy radially outwardly into the neural tissue; a guide provided at the distal end of the cannula, said guide having a bulbous-shaped distal portion configured to deflect the plurality of leads radially outwardly into the neural tissue when the plurality of leads are moved to the extended position, and to block the plurality of leads from extending from the lumen of the cannula when the plurality of leads are in the retracted position; and a shaft connected to the guide, the shaft being at least partially positioned in the lumen of the cannula, wherein axial movement of the shaft causes axial movement of the guide.