Human tissue temperatures achieved during recharging of new-generation neuromodulation devices

Validation of Numerically Simulated Tissue Temperatures During Transcutaneous Recharge of Neurostimulation Systems

“…It is expected, and in fact seen, that the temperatures corresponding to the intermediate depth are bounded by those of the shallow and deep cases. The results of Figure agree well with previously published findings .…”

“…) are in excellent agreement with the corresponding calculations from Smith et al. for the same device. The current results are also in excellent agreement with the corresponding case from Lovik et al.…”

“…It is helpful to compare the results of these calculations with prior published work. For instance, previously temperature variations for three devices were calculated corresponding to an implant depth of 1 cm. The current results (Fig.…”

Surrogate Human Tissue Temperatures Resulting From Misalignment of Antenna and Implant During Recharging of a Neuromodulation Device

“…The two components of the neuromodulation device were respectively modeled as being axisymmetric. This characterization was motivated by prior successful axisymmetric implementations (1). An additional benefit of the assumed axisymmetric geometry of the components is that a more regular numerical mesh could be created.…”

“…Ideally, the primary and secondary of the transformer are lined up so that the magnetic lines of force are properly focused. Neuromodulation device rates of heat dispersion during recharging have been measured, and their resulting effects on tissue temperature rise have been reported for this idealized aligned case (1). However, the alignment of these components is normally the responsibility of the patient who is receiving the therapy.…”