System and method for detecting cardiac arrhythmias using a cardiac wall acceleration sensor signal
First Claim
1. An implantable system for detecting and discriminating among cardiac arrhythmias and for providing therapeutic electrical stimulation to cardiac tissue in response to detected cardiac arrhythmias, said implantable system comprising:
- an implantable lead including electrode means for delivering therapeutic electrical stimulation pulses to said cardiac tissue and for transmitting a signal indicative of cardiac electrical activity to said implantable system, said implantable lead further including a cardiac wall acceleration sensor for providing a signal indicative of cardiac wall accelerations;
acceleration signal analyzing means for receiving said signal indicative of cardiac wall acceleration and for using said signal to detect and discriminate among cardiac arrhythmias; and
pulse generating means for generating said therapeutic electrical stimulation pulses for delivery to said cardiac tissue by said electrode means in response to cardiac arrhythmias detected by said cardiac wall acceleration signal analyzing means.
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Abstract
Implantable leads incorporating accelerometer-based cardiac wall motion sensors, and a method of fabricating such leads, are provided. The cardiac wall motion sensors transduce accelerations of cardiac tissue to provide electrical signals indicative of cardiac wall motion to an implantable cardiac stimulating device. The implantable cardiac stimulating device may use the electrical signals indicative of cardiac wall motion to detect and discriminate among potentially malignant cardiac arrhythmias. In response to a detected abnormal cardiac rhythm, the cardiac stimulating device may deliver therapeutic electrical stimulation to selected regions of cardiac tissue.
187 Citations
16 Claims
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1. An implantable system for detecting and discriminating among cardiac arrhythmias and for providing therapeutic electrical stimulation to cardiac tissue in response to detected cardiac arrhythmias, said implantable system comprising:
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an implantable lead including electrode means for delivering therapeutic electrical stimulation pulses to said cardiac tissue and for transmitting a signal indicative of cardiac electrical activity to said implantable system, said implantable lead further including a cardiac wall acceleration sensor for providing a signal indicative of cardiac wall accelerations; acceleration signal analyzing means for receiving said signal indicative of cardiac wall acceleration and for using said signal to detect and discriminate among cardiac arrhythmias; and pulse generating means for generating said therapeutic electrical stimulation pulses for delivery to said cardiac tissue by said electrode means in response to cardiac arrhythmias detected by said cardiac wall acceleration signal analyzing means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 14, 15, 16)
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10. A method of detecting and discriminating among cardiac arrhythmias using a signal indicative of cardiac wall accelerations provided by a cardiac wall acceleration sensor delivered to a cardiac wall using an implantable lead, and for providing therapeutic electrical stimulation pulses to cardiac tissue in response to detected cardiac arrhythmias, said method comprising the steps of:
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generating said signal indicative of cardiac wall acceleration; analyzing said signal indicative of cardiac wall acceleration to detect and discriminate among cardiac arrhythmias; generating said therapeutic electrical stimulation pulses in response to detected cardiac arrhythmias; and delivering said therapeutic electrical stimulation pulses to cardiac tissue using an electrode delivered to said cardiac tissue by said implantable lead. - View Dependent Claims (11, 12, 13)
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Specification