System and method for detecting tamponade
First Claim
1. A method for detecting a tamponade condition of a patient'"'"'s heart after attachment of a leadless cardiac pacemaker to the patient'"'"'s heart, the leadless cardiac pacemaker having a motion sensor that produces a motion signal, the method comprising:
- monitoring two or more electrodes of the leadless cardiac pacemaker to detect a cardiac electrical signal of the patient'"'"'s heart;
monitoring the motion signal of the leadless cardiac pacemaker;
identifying a characteristic of the motion signal;
determining when the tamponade condition is indicated based at least in part on whether the identified characteristic of the motion signal changes over time in a predetermined way during a sensing window that is defined at least in part by one or more characteristics of the cardiac electrical signal; and
in response to determining that the tamponade condition is indicated, providing a notification of the tamponade condition for use by a physician to take corrective action.
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Accused Products
Abstract
Systems, methods, and devices for determining occurrences of a tamponade condition are disclosed. One exemplary method includes monitoring an accelerometer signal of a leadless cardiac pacemaker attached to a heart wall, determining if a tamponade condition of the patient'"'"'s heart is indicated based at least in part on the monitored accelerometer signal, and in response to determining that the tamponade condition is indicated, providing a notification of the tamponade condition for use by a physician to take corrective action.
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Citations
19 Claims
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1. A method for detecting a tamponade condition of a patient'"'"'s heart after attachment of a leadless cardiac pacemaker to the patient'"'"'s heart, the leadless cardiac pacemaker having a motion sensor that produces a motion signal, the method comprising:
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monitoring two or more electrodes of the leadless cardiac pacemaker to detect a cardiac electrical signal of the patient'"'"'s heart; monitoring the motion signal of the leadless cardiac pacemaker; identifying a characteristic of the motion signal; determining when the tamponade condition is indicated based at least in part on whether the identified characteristic of the motion signal changes over time in a predetermined way during a sensing window that is defined at least in part by one or more characteristics of the cardiac electrical signal; and in response to determining that the tamponade condition is indicated, providing a notification of the tamponade condition for use by a physician to take corrective action. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16)
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15. A leadless cardiac pacemaker for use in pacing a patient'"'"'s heart, comprising:
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a plurality of electrodes; a motion sensor for providing an motion signal; a controller operatively coupled to the plurality of electrodes and the motion sensor, the controller configured to; monitor two or more of the plurality of electrodes to detect a cardiac electrical signal of the patient'"'"'s heart; monitor the motion signal of the motion sensor over time; identifying a characteristic of the motion signal; determining when a tamponade condition is indicated based at least in part on whether the identified characteristic of the motion signal changes over time in a predetermined way during a sensing window that is defined at least in part by one or more characteristics of the cardiac electrical signal; and in response to determining that the tamponade condition is indicated, communicate a notification of the tamponade condition for use by a physician to take corrective action.
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17. A leadless cardiac pacemaker, comprising:
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a plurality of electrodes; a motion sensor for providing a motion signal; a controller operatively coupled to the plurality of electrodes and the motion sensor, the controller configured to; monitor two or more of the plurality of electrodes to detect a cardiac electrical signal of the patient'"'"'s heart; monitor an indication of physical motion of a patient'"'"'s heart over time using the motion sensor; determine when the indication of the physical motion of the patient'"'"'s heart changes over time in a predetermined way during a sensing window that is defined at least in part by one or more characteristics of the cardiac electrical signal; and when it is determined that the indication of the physical motion of the patient'"'"'s heart has changed over time in the predetermined way, communicate a notification of a possible tamponade condition for reception by a remote device that is remote from the leadless cardiac pacemaker. - View Dependent Claims (18, 19)
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Specification