Abstract:
In some examples, determining an estimated remaining longevity of a power source of an implantable medical device comprises determining values of one or more parameters of the power source and one or more operational parameters of the implantable medical device; calculating, based on at least some of the determined parameter values, a first estimated duration until one of the determined parameters of the power source reaches a pre-recommended replacement time (pre-RRT) threshold and adding a timer duration to determine a first estimated longevity value; calculating, based on at least some of the determined parameter values, a second estimated duration until one of the determined parameters of the power source reaches a recommended replacement time (RRT) backup threshold as a second estimated longevity value; determining the estimated remaining longevity based on the two estimated longevity values; and indicating the determined estimated remaining longevity.
Abstract:
A power source longevity monitor is configured for an implantable medical device. An energy counter counts the amount of energy used by the implantable medical device. A voltage monitor monitors the voltage of the power source. A calculator predicts the power source longevity using the energy longevity estimate and the voltage longevity estimate.
Abstract:
A battery assembly for a medical device includes an elongate cathode, an elongate anode, an electrolyte, and an elongate housing assembly encapsulating the cathode, the anode, and the electrolyte. The battery assembly also includes a first electrode exposed from and electrically insulated from the housing assembly. One of the anode and the cathode is electrically coupled to the first electrode, and the other of the anode and the cathode is electrically coupled to the housing assembly. Respective axes of the cathode and the anode are substantially parallel to an axis of the housing assembly, and the cathode and anode each include a flat portion that face each other.
Abstract:
A power source longevity monitor is configured for an implantable medical device. An energy counter counts the amount of energy used by the implantable medical device. A voltage monitor monitors the voltage of the power source. A calculator predicts the power source longevity using the energy longevity estimate and the voltage longevity estimate.