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EVENT-BASED BATTERY MONITOR FOR IMPLANTABLE DEVICES

  • US 20100010559A1
  • Filed: 06/26/2009
  • Published: 01/14/2010
  • Est. Priority Date: 07/09/2008
  • Status: Active Grant
First Claim
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1. A cardiac rhythm management system comprising:

  • a remote physiological sensor powered by a battery having an initial charge capacity, wherein the remote physiological sensor includes an active state, during which the remote physiological sensor performs at least one function, and an inactive state, during which no functions are performed by the remote physiological sensor; and

    a pulse generator configured to communicate with the remote physiological sensor via telemetry, wherein the pulse generator includes a memory operable to store parameters associated with charge consumption for each function performed by the remote physiological sensor and a leakage current associated with the inactive state, wherein the pulse generator further includes a processor operable to determine an active state charge consumption based on the stored parameters and an inactive state charge consumption based on the stored leakage current and a time the device is in the inactive state, and wherein the processor is further operable to subtract the active state charge consumption and inactive state charge consumption from the initial charge capacity to determine a remaining charge capacity of the battery.

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