Meeting Banner
Abstract #2635

Attenuation of RF-induced currents within neuro-stimulation leads using a helical conductor design

Scott Kalpin1, Norbert Kaula2, and Ramez Shehada3

1Systems Engineering, Nuvectra Medical, Broomfield, CO, United States, 2R&D, Nuvectra Medical, Broomfield, CO, United States, 3R&D, Medical Technology Labs, La Mirada, CA, United States

RF currents will be induced within implanted neuro-stimulation leads when exposed to Magnetic Resonance Imaging (MRI) fields. Induced currents result in dissipative heating that manifests at the electrode/patient contact points. The ideal lead design will attenuate induced 64-MHz RF energy coming from the MRI while passing signals in the lower, intended neuro-stimulation frequency range. A Nuvectraâ„¢ SCS lead, having a helical conductor coiling design, is evaluated. Results of MRI phantom experiments demonstrate RF-induced power attenuation between -6.2 and -12.5 dB/meter when exposed to combined fields from 1.5 Tesla, 2.77 W/kg for minutes.

This abstract and the presentation materials are available to members only; a login is required.

Join Here