SYNCHRONIZATION OF ELECTRICAL STIMULATION THERAPY TO TREAT CARDIAC ARRHYTHMIAS
First Claim
Patent Images
1. A method comprising:
- receiving a signal indicative of activity of a heart of a patient;
detecting beats within the signal;
detecting a suspected cardiac arrhythmia based on a plurality of the detected beats;
initiating charging of at least one component of an implantable device configured to deliver a shock to the heart of the patient to treat the cardiac arrhythmia in response to detecting the suspected cardiac arrhythmia;
analyzing the plurality of beats subsequent to the detection of the suspected cardiac arrhythmia to determine a beat discriminator;
in response to completion of the charging, applying the beat discriminator to the signal to identify a beat subsequent to the completion of the charging; and
synchronizing delivery of the shock to the identified beat.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems and methods are described for analyzing a plurality of beats after detection of a suspected cardiac arrhythmia to determine a beat discriminator, identify a beat subsequent to completion of charging of an implantable medical device by applying the beat discriminator, and synchronize delivery of a shock from the medical device to the identified beat. In some examples, identifying the beat using the beat discriminator may help to accurately synchronize the shock with a beat representative of physiological cardiac events instead of an oversensed beat, e.g., noise sensed signal that is misclassified as a cardiac beat.
103 Citations
24 Claims
-
1. A method comprising:
-
receiving a signal indicative of activity of a heart of a patient; detecting beats within the signal; detecting a suspected cardiac arrhythmia based on a plurality of the detected beats; initiating charging of at least one component of an implantable device configured to deliver a shock to the heart of the patient to treat the cardiac arrhythmia in response to detecting the suspected cardiac arrhythmia; analyzing the plurality of beats subsequent to the detection of the suspected cardiac arrhythmia to determine a beat discriminator; in response to completion of the charging, applying the beat discriminator to the signal to identify a beat subsequent to the completion of the charging; and synchronizing delivery of the shock to the identified beat. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A system comprising:
-
a signal generator configured to deliver a shock to a heart of a patient to treat a cardiac arrhythmia of the patient; a sensing module configured to sense a signal indicative of activity of the heart of the patient; and a processor comprising; a signal receiving module configured to receive the signal, a beat detection module configured to detect beats within the signal, an arrhythmia detection module configured to detect a suspected cardiac arrhythmia based on a plurality of the detected beats, a charge initiating module configured to initiate charging of at least one component of the signal generator in response to detecting the suspected cardiac arrhythmia, a beat analysis module configured to analyze the plurality of the beats subsequent to the detection of the suspected cardiac arrhythmia to determine a beat discriminator, a beat identification module configured to, in response to completion of the charging of the signal generator, apply the beat discriminator to the signal to identify a beat subsequent to the completion of the charging of the signal generator, and a shock synchronization module configured to control the signal generator to synchronize delivery of the shock to the identified beat. - View Dependent Claims (14, 15, 16, 17, 18)
-
-
19. A system comprising:
-
means for receiving a signal indicative of activity of a heart of a patient; means for detecting beats within the signal; means for detecting a suspected cardiac arrhythmia based on a plurality of the detected beats; means for initiating charging of at least one component of an implantable device configured to deliver a shock to the heart of the patient to treat the cardiac arrhythmia in response to detecting the suspected cardiac arrhythmia; means for analyzing the plurality of the beats subsequent to the detection of the suspected cardiac arrhythmia to determine a beat discriminator; means for, in response to completion of the charging, applying the beat discriminator to the signal to identify a beat subsequent to the completion of the charging; and means for synchronizing delivery of the shock to the identified beat. - View Dependent Claims (20, 21)
-
-
22. A computer-readable storage medium comprising instructions that cause a processor to:
-
receive a signal indicative of activity of a heart of a patient; detect beats within the signal; detect a suspected cardiac arrhythmia based on a plurality of the detected beats; initiate charging of at least one component of an implantable device configured to deliver a shock to the heart of the patient to treat the cardiac arrhythmia in response to detecting the suspected cardiac arrhythmia; analyze the plurality of the beats subsequent to the detection of the suspected cardiac arrhythmia to determine a beat discriminator; in response to completion of the charging, apply the beat discriminator to the signal to identify a beat subsequent to the completion of the charging; and synchronize delivery of the shock to the identified beat. - View Dependent Claims (23, 24)
-
Specification