Device and method for providing atrial-synchronized ventricular pacing with selective atrial tracking
First Claim
1. A device for providing pacing therapy, the device comprising:
- an atrial lead for sensing electrical activity in an atrium;
a ventricular lead for sensing electrical activity in a ventricle and for delivering electrical pulses to the ventricle;
sensing circuitry connected to the atrial and ventricular leads for sensing depolarizations in the atrium and ventricle, respectively;
pulse generation circuitry connected to the ventricular lead for delivering pacing pulses to the ventricle, respectively; and
control circuitry responsive to sensed atrial depolarizations, for detecting atrial arrhythmias and for controlling the pulse generation circuitry in a mode in which the pulse generation circuitry delivers an atrial synchronized pulse to the ventricular lead in response to each atrial depolarization and causing the pulse generation circuitry, in response to a detected atrial arrhythmia, to deliver atrial synchronized pacing pulses to the ventricular lead in response only to selected atrial depolarizations, wherein the control circuitry determines a desired ratio of atrial depolarizations to ventricular paced pulses based on a beat rate of the atrial arrhythmia and a preferred ventricular beat rate and causes the pulse generation circuitry to deliver atrial synchronized pulses to the ventricular lead in response to detection of a number of atrial depolarizations corresponding to the desired ratio.
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Accused Products
Abstract
A device for delivering pacing therapy includes an atrial and ventricular leads, sensing circuitry connected to the leads for detecting depolarizations, and pulse generation circuitry for delivering ventricular pacing pulses based on sensed atrial depolarizations. The device includes control circuitry for controlling the pulse generation circuitry in a first mode in which the pulse generation circuitry delivers atrial synchronized pulses to both the right and left ventricular leads in response to each atrial depolarization sensed. In response to a detected atrial arrhythmia, the control circuitry causes the pulse generation circuitry to deliver atrial synchronized ventricular pacing pulses in response only to selected atrial depolarizations.
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Citations
4 Claims
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1. A device for providing pacing therapy, the device comprising:
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an atrial lead for sensing electrical activity in an atrium; a ventricular lead for sensing electrical activity in a ventricle and for delivering electrical pulses to the ventricle; sensing circuitry connected to the atrial and ventricular leads for sensing depolarizations in the atrium and ventricle, respectively; pulse generation circuitry connected to the ventricular lead for delivering pacing pulses to the ventricle, respectively; and control circuitry responsive to sensed atrial depolarizations, for detecting atrial arrhythmias and for controlling the pulse generation circuitry in a mode in which the pulse generation circuitry delivers an atrial synchronized pulse to the ventricular lead in response to each atrial depolarization and causing the pulse generation circuitry, in response to a detected atrial arrhythmia, to deliver atrial synchronized pacing pulses to the ventricular lead in response only to selected atrial depolarizations, wherein the control circuitry determines a desired ratio of atrial depolarizations to ventricular paced pulses based on a beat rate of the atrial arrhythmia and a preferred ventricular beat rate and causes the pulse generation circuitry to deliver atrial synchronized pulses to the ventricular lead in response to detection of a number of atrial depolarizations corresponding to the desired ratio. - View Dependent Claims (2)
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3. A device for providing pacing therapy, the device comprising:
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an atrial lead for sensing electrical activity in an atrium; a right ventricular lead for sensing electrical activity in a right ventricle and for delivering electrical pulses to the right ventricle; a left ventricular lead for sensing electrical activity in a left ventricle and for delivering electrical pulses to the left ventricle; sensing circuitry connected to the atrial, right ventricular and left ventricular leads for sensing atrial and ventricular depolarizations; pulse generation circuitry connected to the right ventricular and left ventricular leads for delivering pacing pulses to the right ventricle and left ventricle, respectively; and control circuitry responsive to sensed atrial depolarizations, for detecting atrial arrhythmias and for controlling the pulse generation circuitry in a mode in which the pulse generation circuitry delivers atrial synchronized pulses to both the right and left ventricular leads in response to each atrial depolarization and causing the pulse generation circuitry, in response to a detected atrial arrhythmia, to deliver atrial synchronized pacing pulses to both the right and left ventricular leads in response only to selected atrial depolarizations, wherein the control circuitry determines a desired ratio of atrial depolarizations to ventricular paced pulses based on a beat rate of the atrial arrhythmia and a preferred ventricular beat rate and causes the pulse generation circuitry to deliver atrial synchronized pulses to the right and left ventricular leads in response to detection of a number of atrial depolarizations corresponding to the desired ratio. - View Dependent Claims (4)
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Specification