Numerical Simulation and Experimental Studies of a Ribbon Coil for Trans Spinal Magnetic Stimulation (TSMS) in Rats.

We propose a non-invasive Trans Spinal Magnetic Stimulation (TSMS) coil allowing for focal stimulation. The device is based on a new figure-8 ribbon design, ensuring low R0, and low heating. The two coils were designed and studied using the finite element method (FEM) coupled with NEURON and tested for efficacy on rats. The numerical simulations confirmed the generation of the observed action potentials when the coil was driven with 2.8kA.Clinical Relevance- Chronic neuropathic back and leg pain is one of the main indications for spinal cord stimulation in the United States. Chronic low back pain is one of the most common reasons patients seek medical care, and in 2013 resulted in 87.6 billion dollars in healthcare costs in the USA. Patients would most likely prefer a low-risk, non-invasive procedure, such as TSMS, to surgery with a significant rate of complications.