Abstract:
Tone modulation of lower esophageal sphincters (LES) via electrical stimulation is a
novel method of gastroesophageal reflux disease (GERD) treatment. Traditionally for
output are commonly used constant current drivers, based on different schematic
solutions. This allows delivering same stimulation energy even in case of impedance
change during patient movements or electrode contact aging or encapsulation. The aim of
our work was to design and implement simple constant current driver with digital current
control and ultra-low power consumption. This driver was used in a prototype of
implantable LES stimulator (WPLES), which effectiveness was confirmed during animal
tests.