Patent ID: 9387325
Filing Date: 2016-07-12
CPC Classification: A61N

Claim Text:
1. A method to control stimulation of nervous tissue of a patient to treat chronic pain in a patient, the method comprising: delivering one or more stimulation waveforms to at least one electrode located proximate to a dorsal root ganglion, the one or more stimulation waveforms including a series of pulses configured to excite A-beta (Aβ) fibers, A-delta (Aδ) fibers and C-fibers of the dorsal root ganglion, the one or more stimulation waveforms defined by therapy parameters; sensing an evoked compound action potential (ECAP) signal from the dorsal root ganglion; analyzing a frequency content of the ECAP signal to obtain ECAP frequency data indicative of activity by Aβ, Aδ and C fibers; and determining the type of nerve fibers that were activated by the one or more stimulation waveforms based on the ECAP frequency data; delivering stimulation pulses to the dorsal root ganglion to treat chronic pain of patient according to therapy parameters, selected in response to the determining, that activate Aβ fibers and reduce activation of Aδ and C fibers.