Implantable lead for obstructive sleep apnea

An implantable lead configured to be placed near a nerve of a patient, the implantable lead comprising:

• an elongated shaft defining a longitudinal axis and an inner lumen, wherein the elongated shaft comprises:
• a plurality of electrodes disposed on the elongated shaft;
• and
• a plurality of flexible regions, each flexible region defining a concave cylindrical shape along the longitudinal axis, wherein each flexible region separates longitudinally adjacent electrodes of the plurality of electrodes, and wherein the concave cylindrical shape comprises:
• a distal portion defining a first diameter;
• a proximal portion defining a second diameter;
• and
• a concave portion connecting the distal portion and the proximal portion and defining a third diameter at a narrowest location along the concave portion, wherein the third diameter is less than the first diameter or the second diameter;
• and
• a conductor coil disposed within the inner lumen and extending along the longitudinal axis, wherein the conductor coil comprises a plurality of conductive wires, and wherein each electrode of the plurality of electrodes is electrically connected to a respective wire of the plurality of conductive wires.

An implantable lead configured to be placed near a nerve of a patient, the implantable lead comprising:

• an elongated shaft defining a longitudinal axis and comprising:
• a plurality of electrodes;
• and
• a plurality of separate flexible regions arranged along the longitudinal axis, each flexible region extending along the longitudinal axis from a proximal end to a distal end and comprising:
• a first portion defining a first outer diameter;
• a second portion defining a second outer diameter;
• a third portion connecting the first portion to the second portion and defining a third outer diameter,
• wherein the third outer diameter is less than the first outer diameter or the second outer diameter.