Systems and methods for leadless cardiac resynchronization therapy
First Claim
1. A method of using a subcutaneous device (SD) in a patient and a leadless pacing device (LPD) in the patient'"'"'s heart comprising:
- sensing electrical signals from the patient'"'"'s heart using the SD;
employing the SD to determine whether cardiac resynchronization pacing therapy (CRT pacing) is appropriate based upon the sensed electrical signals;
employing the SD to determine timing of CRT pacing pulses for delivery to cardiac tissue through the LPD and sending signals indicative thereof to the LPD;
responsive to the sent indicative signals, delivering the CRT pacing pulses to the heart using the LPD;
thereafter sensing subsequent electrical signals from the patient'"'"'s heart using the SD; and
determining, by the SD based on the subsequent electrical signals, whether the CRT pacing by the LPD provided efficacious resynchronization and whether the delivery and timing of subsequent CRT pacing pulses should be modified.
1 Assignment
0 Petitions
Accused Products
Abstract
Techniques and systems for monitoring cardiac arrhythmias and delivering electrical stimulation therapy using a subcutaneous device (e.g. subcutaneous implantable (SD)) and a leadless pacing device (LPD) are described. In one or more embodiments, a computer-implemented method includes sensing a first electrical signal from a heart of a patient through a SD. The first signal is stored into memory and serves as a baseline rhythm for a patient. Subsequently, a second signal is sensed from the heart through the SD. A cardiac condition can be detected within the sensed second electrical signal through the SD. A determination is made as to whether cardiac resynchronization therapy (CRT) is appropriate to treat the detected cardiac condition. A determination can then be made as to the timing of pacing pulse delivery to cardiac tissue through a leadless pacing device (LPD). The LPD receives communication from the SD requesting the LPD to deliver CRT to the heart. The SD senses and extracts data from a third electrical signal from the heart of the patient to determine whether the pacing by LPD provided efficacious resynchronization or whether the delivery and timing of the LPD pulse should be modified.
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Citations
31 Claims
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1. A method of using a subcutaneous device (SD) in a patient and a leadless pacing device (LPD) in the patient'"'"'s heart comprising:
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sensing electrical signals from the patient'"'"'s heart using the SD; employing the SD to determine whether cardiac resynchronization pacing therapy (CRT pacing) is appropriate based upon the sensed electrical signals; employing the SD to determine timing of CRT pacing pulses for delivery to cardiac tissue through the LPD and sending signals indicative thereof to the LPD; responsive to the sent indicative signals, delivering the CRT pacing pulses to the heart using the LPD; thereafter sensing subsequent electrical signals from the patient'"'"'s heart using the SD; and determining, by the SD based on the subsequent electrical signals, whether the CRT pacing by the LPD provided efficacious resynchronization and whether the delivery and timing of subsequent CRT pacing pulses should be modified. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 15, 24, 25, 30, 31)
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13. A method of using a subcutaneous device (SD) in a patient and a leadless pacing device (LPD) in the patient'"'"'s heart comprising:
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sensing electrical signals from the patient'"'"'s heart using the SD; employing the SD to determine whether cardiac resynchronization pacing therapy (CRT pacing) is appropriate based upon the sensed electrical signals; employing the SD to determine timing of CRT pacing pulses for delivery to cardiac tissue through the LPD and sending signals indicative thereof to the LPD responsive to the sent indicative signals, delivering the CRT pacing pulses to the heart using the LPD; thereafter sensing subsequent electrical signals from the patient'"'"'s heart using the SD; determining, by the SD based on the subsequent electrical signals, whether the CRT pacing by the LPD provided efficacious resynchronization and whether the delivery and timing of subsequent CRT pacing pulses should be modified; and analyzing paced QRS morphology from the subsequent electrical signals sensed from the patient'"'"'s heart acquired by the SD to verify interventricular synchrony. - View Dependent Claims (26)
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14. A method of using a subcutaneous device (SD) in a patient and a leadless pacing device (LPD) in the patient'"'"'s heart comprising:
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sensing electrical signals from the patient'"'"'s heart using the SD; employing the SD to determine whether cardiac resynchronization pacing therapy (CRT pacing) is appropriate based upon the sensed electrical signals; employing the SD to determine timing of CRT pacing pulses for delivery to cardiac tissue through the LPD and sending signals indicative thereof to the LPD responsive to the sent indicative signals, delivering the CRT pacing pulses to the heart using the LPD; thereafter sensing subsequent electrical signals from the patient'"'"'s heart using the SD; determining, by the SD based on the subsequent electrical signals, whether the CRT pacing by the LPD provided efficacious resynchronization and whether the delivery and timing of subsequent CRT pacing pulses should be modified; and using a Wavelet-like algorithm to determine whether a degree of morphological difference exists between the QRS complex for a signal acquired without pacing and QRS complex for the subsequent electrical signal acquired during pacing. - View Dependent Claims (27)
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16. A method of using a subcutaneous device (SD) in a patient and a leadless pacing device (LPD) in the patient'"'"'s heart comprising:
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sensing electrical signals from the patient'"'"'s heart using the SD; employing the SD to determine whether cardiac resynchronization pacing therapy (CRT pacing) is appropriate based upon sensing the electrical signals; employing the SD to determine timing of CRT pacing pulses for delivery to cardiac tissue through the LPD and sending signals indicative thereof to the LPD responsive to the sent indicative signals, delivering the CRT pacing pulses to the heart using the LPD; thereafter sensing subsequent electrical signals from the patient'"'"'s heart using the SD; determining, by the SD based on the subsequent electrical signals, whether the CRT pacing by the LPD provided efficacious resynchronization and whether the delivery and timing of subsequent CRT pacing pulses should be modified; and sensing electrical signals from a substernally placed lead extending from the SD. - View Dependent Claims (28)
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17. A method comprising:
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sensing a first electrical signal by a subcutaneous implanted device (SD) from a heart of a patient; detecting a cardiac condition within the sensed first electrical signal; determining, by the SD and based on the detected cardiac condition, timing of delivery of cardiac resynchronization therapy (CRT) to the patient to treat the detected cardiac condition; receiving, by a leadless pacing device (LPD) implanted within the heart of the patient, communication from the SD requesting the LPD deliver CRT to the heart; sensing, by the LPD, a second electrical signal from the heart of the patient; and determining, by the LPD and based on the second electrical signal, whether to deliver pacing to the heart from the LPD and whether timing of the pacing should be adjusted to provide more efficient resynchronization. - View Dependent Claims (18, 19, 29)
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20. A system of cardiac pacing comprising:
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a subcutaneous device (SD); a leadless pacing device (LPD);
locatable in the patient'"'"'s heart;sensing means for sensing electrical signals from a patient'"'"'s heart using the SD; processing means for employing the SD to determine whether cardiac resynchronization pacing therapy (CRT pacing) is appropriate based upon the sensed electrical signals; processing means for employing the SD to determine timing of CRT pacing pulses for delivery to cardiac tissue through the LPD and sending signals indicative thereof to the LPD responsive to the sent indicative signals; delivering means for delivering the CRT pacing pulses to the heart using the LPD; thereafter sensing means for sensing subsequent electrical signals from the patient'"'"'s heart using the SD; and determining means for determining, by the SD based on the subsequent electrical signals, whether the CRT pacing by the LPD provided efficacious resynchronization and whether the delivery and timing of subsequent CRT pacing pulses should be modified. - View Dependent Claims (21, 22, 23)
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Specification