Implantable flexible circuit leads and methods of use

A system for stimulating the dorsal root ganglion of a patient, comprising:

• a first elongate flexible implantable dielectric structure comprising a first proximal end adapted to receive first stimulation pulses from an implantable pulse generator, a first distal end adapted to apply the first stimulation pulses to the dorsal root ganglion of the patient, and a first medial portion connecting the first proximal end and the first distal end, wherein the first distal end comprises a first electrode;
• and
• a second elongate flexible implantable dielectric structure comprising a second proximal end adapted to receive second stimulation pulses from the implantable pulse generator, a first distal end adapted to apply the second stimulation pulses to the dorsal root ganglion of the patient, and a second medial portion connecting the second proximal end and the second distal end, wherein the second distal end comprises a second electrode;
• wherein the first and second proximal ends and first and second medial portions are bonded together along a central longitudinal axis so that the first and second elongate flexible implantable dielectric structures are configured to extend lengthwise along the central longitudinal axis, wherein the first and second electrodes are disposed on first and second inner surfaces of the first and second distal ends respectively and are configured to be implanted at least partially within a vertebral foramen containing the dorsal root ganglion to direct stimulation energy toward the central longitudinal axis;
• wherein at least one of the first and second distal ends is configured to move away from the central longitudinal axis while the first and second proximal ends are joined to allow the dorsal root ganglion to be positioned at least partially between the first and second distal ends to receive the stimulation energy that is directed by the first and second electrodes toward the central longitudinal axis.