Patent ID: 8086310
Filing Date: 2011-12-27
Classification: A61N,G01R

Abstract:
1. A method for determining the remaining useful life of an energy storage device in an implantable medical device, said energy storage device having a total available electrical charge that may be obtained from said energy storage device, said method comprising: determining an active charge depletion of the implantable medical device; determining an inactive charge depletion of said implantable medical device; and determining a time period until an end of service of the energy storage device based upon said active charge depletion, said inactive charge depletion, and said total available charge, wherein determining an active charge depletion of an implantable medical device further comprises determining a charge depleted during a previous stimulation performed by said implantable device and determining an active current usage rate for a future stimulation to be performed by said implantable device, wherein determining an active current usage rate for a future stimulation to be performed by said implantable medical device further comprises correlating a first predetermined current usage rate with a first stimulation performed by said implantable device.