Pacemaker passive measurement testing system and method
First Claim
1. A method for operating a pacemaker with at least a first sensing channel and a second sensing channel, the method comprising:
- operating the pacemaker in a programmed mode during which the first sensing channel is an active sensing channel and the second sensing channel is an inactive sensing channel not used for inhibiting or triggering any pacing pulse, the programming mode having a plurality of programmed states;
initiating a passive measurement testing mode;
transitioning from a current state of the plurality of programmed states to a lead impedance measuring test state;
measuring a lead impedance associated with a lead of the second sensing channel during the lead impedance measuring test state;
storing the measured lead impedance; and
deactivating the passive measurement testing mode and returning to the current state of the plurality of programmed states after the measured lead impedance is stored.
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Abstract
A system and method for passively testing a cardiac pacemaker in which sensing signal amplitudes and lead impedance values are measured and stored while the pacemaker is functioning in its programmed mode. The amplitude and impedance data may be gotten and stored periodically at regular intervals to generate a historical record for diagnostic purposes. Sensing signal amplitudes may also be measured and stored from a sensing channel which is currently not programmed to be active as long as the pacemaker is physically configured to support the sensing channel. Such data can be useful in evaluating whether a switch in the pacemaker'"'"'s operating mode is desirable.
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Citations
21 Claims
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1. A method for operating a pacemaker with at least a first sensing channel and a second sensing channel, the method comprising:
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operating the pacemaker in a programmed mode during which the first sensing channel is an active sensing channel and the second sensing channel is an inactive sensing channel not used for inhibiting or triggering any pacing pulse, the programming mode having a plurality of programmed states; initiating a passive measurement testing mode; transitioning from a current state of the plurality of programmed states to a lead impedance measuring test state; measuring a lead impedance associated with a lead of the second sensing channel during the lead impedance measuring test state; storing the measured lead impedance; and deactivating the passive measurement testing mode and returning to the current state of the plurality of programmed states after the measured lead impedance is stored. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for operating a pacemaker with at least a first sensing channel and a second sensing channel, the method comprising:
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operating the pacemaker in a programmed mode during which the first sensing channel is an active sensing channel and the second sensing channel is an inactive sensing channel not used for inhibiting or triggering any pacing pulse, the programming mode having a plurality of programmed states; initiating a passive measurement testing mode; receiving a sensing signal in the second sensing channel; transitioning from a current state of the plurality of programmed states to a test state upon receiving the sensing signal; measuring one or more parameter values using the second sensing channel during the test state; storing the measured one or more parameter values; and deactivating the passive measurement testing mode and returning to the current state of the plurality of programmed states after the one or more parameter values are stored. - View Dependent Claims (10, 11, 12, 13)
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14. A pacing system coupled to a first cardiac region and a second cardiac region, the pacing system comprising:
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a first sensing and pacing channel including a first lead coupled to the first cardiac region; a second sensing and pacing channel including a second lead coupled to the second cardiac region; a storage medium; and a controller coupled to the first sensing and pacing channel, the second sensing and pacing channel, and the storage medium, the controller programmed to; operate the pacing system in a programmed mode during which the first sensing channel is active and the second sensing channel is inactive, the programmed mode having a plurality of programmed states; initiate a passive measurement testing mode; transition from a current state of the plurality of programmed states to a test state; measure one or more parameter values using the second sensing channel during the test state; store the measured one or more parameter values in the storage medium; and deactivate the passive measurement testing mode and return to the current state after the measured one or more parameter values are stored. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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Specification