A novel current steering method for targeted spinal cord stimulation

Spinal Cord Stimulation (SCS) with leads embedded in the epidural space has become a recognized and effective clinical therapy for chronic pain relief. Leads with multiple electrodes placed close to the spinal cord allow targeted stimulation. This paper presents a novel current steering method to ac...

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Bibliographic Details
Published in:Frontiers in pain research (Lausanne, Switzerland) Switzerland), 2023-02, Vol.4, p.1028368-1028368
Main Authors: Mishra, Lakshmi Narayan, Kulkarni, Gaurav, Gadgil, Mandar
Format: Article
Language:English
Subjects:
current steering
FEA
field focusing
multiple independent current sources
neuromodulation
Pain Research
spinal cord stimulation
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Summary:Spinal Cord Stimulation (SCS) with leads embedded in the epidural space has become a recognized and effective clinical therapy for chronic pain relief. Leads with multiple electrodes placed close to the spinal cord allow targeted stimulation. This paper presents a novel current steering method to achieve targeted spinal cord stimulation by determining the optimal current sourced through a set of electrodes to maximize current density in a specified region of the spinal cord. The method provides a flexibility for personalized pain relief therapy, while minimizing stimulation in unwanted regions. The paper proposes a new optimization problem to achieve current steering. The optimization problem uses a solution of the Poisson equation evaluated using Finite Element Analysis (FEA) over a geometric model of the spinal cord and the embedded leads. The solution to the optimization problem determines the optimal current sourced through a set of electrodes to achieve a targeted stimulation.
ISSN:2673-561X
2673-561X
DOI:10.3389/fpain.2023.1028368