Patent ID: 7546164

Claim:
A kit comprising: a needle; and an implantable lead for stimulation of nerve tissue, muscle or organs, wherein the implantable lead is adapted to be passed through the needle, the lead comprising: an elongate lead body having an axis, a tip, and a channel, wherein the channel has an asymmetric cross section; and at least one extendable member having a distal portion adapted to curl upon itself when not-constrained to form an electrode, a proximal portion, and an asymmetric cross section that engages the asymmetric cross section of the channel to hold the extendable member against rotation relative to the lead body, the extendable member received at least in part within the lead body for axial movement between: a retracted position in which the distal and proximal portions are constrained within the lead body; and an extended position in which the proximal portion is retained within the lead body and the distal portion is deployed out the tip of the lead body such that the distal portion curls upon itself to form an electrode.