A Rechargeable Battery-Driven, More than 4 Weeks Runtime, Biphasic Bilateral DBS Unit for Rodents

Abstract

A deep brain stimulation (DBS) unit for rodents is presented and electrically characterized under usual stimulation conditions. Only inexpensive off-the-shelf components are used. The device provides two channels for biphasic bilateral stimulation and proper long-term operation for more than 30 days using a 3.6 V 150 mAh Lithium-Ion polymer battery. Equipped with a wireless charging module, the stimulator is capable to be recharged contactless and therefore operation time is extended to months. Impedance variation of the stimulation electrode-to- tissue interface within a wide range have a minor impact on stimulation signals and power supply lifetime.