Patent ID: 6760625
Filing Date: 2004-07-06
Classification: A61N,G01R

Abstract:
An implantable medical device comprising:a therapy delivery device that is adapted to deliver therapy to an organ of a patient; a controller that controls the delivery of therapy to the organ of the patient; a CFx battery that supplies power to the therapy delivery device wherein the battery has an output characteristic with a substantially non-decreasing output voltage for a first period of time followed by a declining voltage as the battery approaches end-of-life; a battery monitoring circuit, that samples the output voltage of the CFx battery and periodically provides sampled output voltage signals indicative thereof to the controller, wherein the controller determines a predicted end-of-life point of the battery based upon the sampled output voltage signals and wherein the controller monitors the sampled output voltage signals and determines when the sampled voltage signals are indicative of the predictive end-of-life point of the battery.