Patent ID: 8195294
Filing Date: 2012-06-05
Classification: A61N

Abstract:
1. A controller for an implantable medical device having a plurality of electrodes, said implantable medical device being capable of delivering therapeutic stimulation to a patient through said plurality of electrodes, comprising: a control module operatively coupled to said plurality of electrodes; said control module configured to conduct a plurality of measurements of impedance values in a plurality of stages; said control module being configured to conduct, in a first one of said plurality of stages, a measurement of an impedance value for a first group of a plurality of selected sets of said plurality of electrodes; said control module being configured to conduct, in a second one of said plurality of stages, a measurement of said impedance value for a second group of at least one selected set of said plurality of electrodes; wherein said first group of said plurality of selected sets is different from said second group of at least one selected set; and wherein at least one of a plurality of active parameters is varied between individual ones of said plurality of stages, and wherein said at least one of said plurality of active parameters comprises at least one of voltage, pulse width, frequency, current, power and electrode polarity.