Numerical Analysis of a Focused Ultrasound Powered Transducer for a Deep Brain Stimulator

Guner U. U., ATEŞ K., Kursun K., ÖZEN Ş.

8th International Electromagnetic Compatibility Conference, EMC Turkiye 2025, Antalya, Türkiye, 14 - 07 Eylül 2025, (Tam Metin Bildiri) identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.1109/emcturkiye67151.2025.11207246
  • Basıldığı Şehir: Antalya
  • Basıldığı Ülke: Türkiye
  • Anahtar Kelimeler: bioelectromagnetics, deep brain stimulator, focused ultrasound, piezoelectric, transducer
  • Akdeniz Üniversitesi Adresli: Evet

Özet

This study investigates the performance of focused ultrasound powered piezoelectric transducers for wireless deep brain stimulator (DBS) using finite element method (FEM) based simulations. Three piezoelectric materials barium titanate, polyvinylidene fluoride, and lead zirconate titanate were analyzed under two placement strategies (scalp-top and subthalamic nucleus-top) and two tissue models (idealized and acoustically attenuated). Simulations modeled acoustic-piezoelectric coupling and incorporated realistic dielectric and attenuation properties. Among the candidates, PVDF generated the highest output voltages, achieving values sufficient for DBS even under attenuated conditions. These results highlight the importance of both material choice and anatomical placement in optimizing wireless, battery-free DBS systems.