Selective stimulation systems and signal parameters for medical conditions

摘要

Devices, systems and methods are provided for targeted treatment of a variety of conditions, particularly conditions that are associated with or influenced by the nervous system, such as pain. Targeted treatment of such conditions is provided with minimal deleterious side effects, such as undesired motor responses or undesired stimulation of unaffected body regions. This is achieved by directly neuromodulating a target anatomy associated with the condition while minimizing or excluding undesired neuromodulation of other anatomies.

主权项

1. A system for stimulating a target dorsal root ganglion to perform a targeted treatment, the system comprising:
a lead having at least one electrode, wherein the lead is configured to be positioned so that at least one of the at least one electrode is able to stimulate the target dorsal root ganglion; and an implantable pulse generator connectable with the lead and configured to output a stimulation signal; wherein a current amplitude of the stimulation signal output by the pulse generator is incrementally adjustable in response to user inputs accepted by an external programmer that wirelessly communicates with the implantable pulse generator; wherein the system is configured such that when said current amplitude of the stimulation signal output by the pulse generator is at least a specified level said current amplitude is adjustable in first increments of 50 μA or less in response to user inputs accepted by the external programmer, and when said current amplitude is less than the specified level said current amplitude is adjustable in second increments of 25 μA or less in response to user inputs accepted by the external programmer; wherein the specified level is a current amplitude level at which an increment resolution transitions from the first increments to the second increments, or vice versa; wherein the second increments are less than the first increments; and wherein the first and second increments enable adjustments to the current amplitude in small enough increments to identify a magnitude for the current amplitude that stimulates the target dorsal root ganglion, to achieve the targeted treatment, without stimulating a ventral root associated with the target dorsal root ganglion.