Systems and methods for leadless cardiac resynchronization therapy
First Claim
1. A method comprising:
- sensing electrical signals from a patient'"'"'s heart using subcutaneous electrodes coupled to a subcutaneous device and located outside the patient'"'"'s ribcage;
determining, by the subcutaneous device, whether cardiac resynchronization pacing therapy (CRT pacing) is appropriate for the patient based upon the sensed electrical signals;
sending, by the subcutaneous device, a command signal to a leadless pacing device affixed to a wall of the patient'"'"'s left ventricle and delivering CRT pacing using the leadless pacing device in response to the command signal;
after sending the command signal, sensing subsequent electrical signals from the patient'"'"'s heart using the subcutaneous electrodes; and
determining, by the subcutaneous device based on the subsequent electrical signals, whether the CRT pacing provided efficacious resynchronization and whether the CRT pacing should be modified.
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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).
173 Citations
15 Claims
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1. A method comprising:
sensing electrical signals from a patient'"'"'s heart using subcutaneous electrodes coupled to a subcutaneous device and located outside the patient'"'"'s ribcage; determining, by the subcutaneous device, whether cardiac resynchronization pacing therapy (CRT pacing) is appropriate for the patient based upon the sensed electrical signals; sending, by the subcutaneous device, a command signal to a leadless pacing device affixed to a wall of the patient'"'"'s left ventricle and delivering CRT pacing using the leadless pacing device in response to the command signal; after sending the command signal, sensing subsequent electrical signals from the patient'"'"'s heart using the subcutaneous electrodes; and determining, by the subcutaneous device based on the subsequent electrical signals, whether the CRT pacing provided efficacious resynchronization and whether the CRT pacing should be modified. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method, comprising:
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using a system implanted in a patient to deliver cardiac resynchronization pacing therapy, the system comprising a subcutaneously implanted device and leadless pacing devices attached to the patient'"'"'s right and left ventricles; the method comprising; sensing electrical signals from a patient'"'"'s heart using subcutaneous electrodes coupled to the subcutaneous device and located outside the patient'"'"'s ribcage; determining, by the subcutaneous device, whether cardiac resynchronization pacing therapy (CRT pacing) is appropriate for the patient based upon the sensed electrical signals and whether the CRT pacing should be fusion pacing or biventricular pacing; sending, from the subcutaneous device, signals to the leadless pacing devices indicative of whether the CRT pacing should be fusion pacing or biventricular pacing; and thereafter delivering the indicated one of fusion or biventricular pacing using the leadless pacing devices. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A system comprising:
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a leadless pacing device including means for fixation to a patient'"'"'s heart wall; a subcutaneous device comprising; subcutaneous electrodes adapted for location outside the patient'"'"'s ribcage; means for sensing electrical signals from a patient'"'"'s heart using the subcutaneous electrodes; means for determining whether cardiac resynchronization pacing therapy (CRT pacing) is appropriate for the patient based upon the sensed electrical signals; means for sending, a command signal to the leadless pacing device in response to the determination; and wherein the leadless pacing device further comprises means for delivering CRT pacing in response to the command signal; and wherein the subcutaneous device further comprises means for sensing subsequent electrical signals from the patient'"'"'s heart using the subcutaneous electrodes after sending the command signal; and means for determining, by the subcutaneous device based on the subsequent electrical signals, whether the CRT pacing provided efficacious resynchronization and whether the CRT pacing should be modified.
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15. A system, comprising:
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a subcutaneous device comprising subcutaneous electrodes adapted for location outside the patient'"'"'s rib cage and leadless pacing devices adapted for attachment to the patient'"'"'s right and left ventricles; the subcutaneous device comprising; means for sensing electrical signals from a patient'"'"'s heart using the subcutaneous electrodes; means for determining, whether cardiac resynchronization pacing therapy (CRT pacing) is appropriate for the patient based upon the sensed electrical signals and whether the CRT pacing should be fusion pacing or biventricular pacing; and means for sending, from the subcutaneous device, signals to the leadless pacing devices indicative of whether the CRT pacing should be fusion pacing or biventricular pacing; and wherein the leadless pacing devices comprise means for delivering the indicated one of fusion or biventricular pacing using the leadless pacing devices responsive to the signals from the subcutaneous device.
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Specification