Pacemaker passive measurement testing system
First Claim
1. A cardiac pacemaker having a plurality of sensing channels each including a lead for coupling to a heart having an atrial region and a ventricular region, the pacemaker comprising:
- a controller programmed to;
operate the pacemaker in a first mode during which a first channel of the plurality of sensing channels is programmed to be an inactive channel, the first mode having a plurality of states;
activate a passive measurement testing mode;
receive a sensing signal from the inactive channel;
transition from a current state of the plurality of states to a test state in response to the sensing signal being received after the passive measurement testing mode is activated;
measure one or more parameter values using the inactive channel during the test state; and
return to the current state after the one or more parameter values are measured.
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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.
44 Citations
20 Claims
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1. A cardiac pacemaker having a plurality of sensing channels each including a lead for coupling to a heart having an atrial region and a ventricular region, the pacemaker comprising:
a controller programmed to; operate the pacemaker in a first mode during which a first channel of the plurality of sensing channels is programmed to be an inactive channel, the first mode having a plurality of states; activate a passive measurement testing mode; receive a sensing signal from the inactive channel; transition from a current state of the plurality of states to a test state in response to the sensing signal being received after the passive measurement testing mode is activated; measure one or more parameter values using the inactive channel during the test state; and return to the current state after the one or more parameter values are measured. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A cardiac pacemaker having a plurality of sensing channels each including a lead for coupling to a heart, the pacemaker comprising:
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means for operating the pacemaker in a first mode during which a first channel of the plurality of sensing channels is programmed to be an inactive channel, the first mode having a plurality of programmed states; means for initiating a passive measurement testing mode; means for transitioning from a current state of the plurality of states to a test state in response to receipt of a sensing signal from the inactive channel after the passive measurement testing mode is initiated; means for measuring one or more parameter values using the inactive channel during the test state; and means for returning to the current state after the one or more parameter values are measured. - View Dependent Claims (17, 18, 19, 20)
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Specification