Method and apparatus for monitoring battery status of implantable medical device
First Claim
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1. A system for monitoring status of a battery in an implantable medical device, the system comprising:
- a battery analyzer configured to analyze the status of the battery, the battery analyzer including a trending module including;
a parameter input configured to receive measured values of a battery functional parameter and calculated values of the battery functional parameter, the battery functional parameter indicative of a state of depletion of the battery and including at least a terminal voltage being a voltage across terminals of the battery, the measured values each indicative of an actual state of depletion of the battery, the calculated values each indicative of an expected state of depletion of the battery; and
a processing circuit configured to produce a measured battery status trend being a trend of the measured values of the battery functional parameter and a calculated battery status trend being a trend of the calculated values of the battery functional parameter.
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Abstract
A battery monitoring system monitors status of a battery in an implantable medical device by comparing a measured battery status trend to a calculated battery status trend. The measured battery status trend is a trend of measured parameter values each indicative of an actual state of depletion of the battery. The calculated battery status trend is a trend of calculated parameter values each indicative of an expected state of depletion of the battery.
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Citations
26 Claims
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1. A system for monitoring status of a battery in an implantable medical device, the system comprising:
a battery analyzer configured to analyze the status of the battery, the battery analyzer including a trending module including; a parameter input configured to receive measured values of a battery functional parameter and calculated values of the battery functional parameter, the battery functional parameter indicative of a state of depletion of the battery and including at least a terminal voltage being a voltage across terminals of the battery, the measured values each indicative of an actual state of depletion of the battery, the calculated values each indicative of an expected state of depletion of the battery; and a processing circuit configured to produce a measured battery status trend being a trend of the measured values of the battery functional parameter and a calculated battery status trend being a trend of the calculated values of the battery functional parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A system for monitoring status of a battery in an implantable medical device, the system comprising:
a battery analyzer configured to analyze the status of the battery, the battery analyzer including; a trending module including; a parameter input configured to receive measured values of a battery functional parameter and calculated values of the battery functional parameter, the battery functional parameter indicative of a state of depletion of the battery, the measured values each indicative of an actual state of depletion of the battery, the calculated values each indicative of an expected state of depletion of the battery; and a processing circuit configured to produce a measured battery status trend being a trend of the measured values of the battery functional parameter and a calculated battery status trend being a trend of the calculated values of the battery functional parameter; and a trend alarm coupled to the trending module and configured to produce an alert signal when the measured battery status trend deviates from the calculated battery status trend by at least a specified performance margin for a monitoring period. - View Dependent Claims (22, 23, 24, 25, 26)
Specification