Leadless cardiac pacemaker having a sensor with a lower power mode
AssigneeCardiac Pacemakers, Inc.
InventorsKeith P. Maile, Jeffrey E. Stahmann, Michael J. Kane
Life of this patent
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Abstract
A leadless cardiac pacemaker (LCP) configured to sense and pace a patient's heart includes a sensor configured to sense a parameter related to cardiac contractility of the patient's heart and a power management unit that is operatively coupled to the sensor. The power management unit is configured to place the sensor in a higher power sense mode during times when sensing the parameter related to cardiac contractility is desired and to place the sensor in a lower power mode during times when sensing the parameter related to cardiac contractility is not desired.
Claims20
A leadless cardiac pacemaker (LCP) configured to sense and pace a patient's heart, the LCP comprising:
- a sensor configured to sense a parameter related to cardiac contractility of the patient's heart;
- a power management unit operatively coupled to the sensor, the power management unit configured to:
- place the sensor in a higher power sense mode during times when sensing the parameter related to cardiac contractility is desired;
- and
- place the sensor in a lower power mode during times when sensing the parameter related to cardiac contractility is not desired.
A system comprising:
- a leadless cardiac pacemaker (LCP) including:
- a housing;
- an accelerometer disposed within the housing;
- a controller configured to activate the accelerometer in response to a detected cardiac cycle marker;
- two or more electrodes for receiving conducted communication signals emanating from outside of the housing;
- and
- a receiver coupled to the two or more electrodes for receiving a communication via conducted communication from outside the housing;
- and
- an external sensor, remote from the leadless cardiac pacemaker, for detecting a cardiac cycle maker and communicating the marker via conducted communication to the leadless cardiac pacemaker (LCP).
A method of monitoring heart activity using a leadless cardiac pacemaker (LCP), the leadless cardiac pacemaker including an accelerometer, a battery and a power management unit, the method comprising:
- detecting a cardiac cycle marker;
- activating the accelerometer in response to the detected cardiac cycle marker in order to obtain a measure related to a peak endocardial acceleration (PEA) value;
- and
- deactivating the accelerometer after obtaining the measure related to the peak endocardial acceleration (PEA) value in order to conserve battery power in the battery.
Dependencies are inferred from the claim text.