System and method for detecting tamponade
AssigneeCardiac Pacemakers, Inc.
InventorsMichael J. Kane, Allan Charles Shuros, Brian L. Schmidt, Keith R. Maile, Benjamin J. Haasl
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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.
Claims19
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.
A leadless cardiac pacemaker for use in pacing a patient's heart, comprising:
- 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.
A leadless cardiac pacemaker, comprising:
- 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.
Dependencies are inferred from the claim text.