Patent ID: 9610448
Date: 2017-04-04
CPC Classifications: A61N

Claim:
1. A method to treat chronic pain in a patient by controlling non-paresthesia stimulation of nervous tissue of a spinal cord of the patient, the method comprising: providing a lead having at least one electrode on the lead configured to be implanted at a target position with an epidural space and proximate to nervous tissue of the spinal cord of the patient; delivering a non-paresthesia stimulation waveform to the at least one electrode based on a therapy parameter set (TPS), the stimulation waveform including a series of pulses configured to excite at least one of A-delta fibers or C-fibers of the nervous tissue of the spinal cord of the patient; sensing sensory action potential (SAP) signals; iteratively repeating the delivering and sensing operations while changing at least one parameter from the TPS; analyzing the SAP signals to obtain SAP activity data associated with the TPS for at least one of an SAP C-fiber component or an SAP A-delta fiber component, the analyzing operations obtaining a collection of SAP activity data associated with multiple therapy parameter set; selecting one or more parameters for the TPS based on the collection of SAP activity data; programming an implantable pulse generator to deliver stimulation to nervous tissue of the spinal cord according to the TPS; and activating the implantable pulse generator to deliver electrical stimulation to the patient according to the programmed TPS.