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US 2006/0224202 A1Published application
System to treat AV-conducted ventricular tachyarrhythmia
AssigneeCardiac Pacemakers, Inc.
InventorsJulia Moffitt, Andrew Kramer, Imad Libbus
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Abstract
Various aspects of the present subject matter provide devices and methods to treat AV-conducted ventricular tachyarrhythmia (AVCVT). According to various embodiments of the method, an AVCVT is sensed, an IVC-LA fat pad is stimulated when the AVCVT is sensed to block AV conduction, and bradycardia support pacing is provided while the IVC-LA fat pad is stimulated. Other aspects and embodiments are provided herein.
Claims42
An implantable medical device, comprising:
- at least one port, each port being adapted to connect at least one lead that has at least one electrode;
- a sensing circuit connected to the at least one port to sense at least one intrinsic signal for use in determining an AV-Conducted Ventricular Tachyarrhythmia (AVCVT) event;
- a neural stimulation circuit connected to the at least one port to selectively apply a neural stimulation signal to an IVC-LA fat pad located between an inferior vena cava and a left atrium;
- a pacing circuit connected to the at least one port to provide bradycardia support pacing to maintain at least a programmable minimum heart rate;
- and
- a controller connected to the sensing circuit, the neural stimulation circuit and the pacing circuit, the controller being adapted to determine the AVCVT event from the at least one intrinsic signal sensed by the sensing circuit, apply the neural stimulation signal to the IVC-LA fat pad during the AVCVT event to block AV conduction to terminate the AVCVT event, and provide bradycardia support pacing when the neural stimulation signal is applied to the IVC-LA fat pad.
3 more elements
An implantable medical device, comprising:
- a header, including:
- a first port to connect to a first lead with at least one electrode to be located to sense intrinsic signals from a right atrium;
- a second port to connect to a second lead with at least one electrode to be located to sense intrinsic signals from and provide electrical stimulation to a right ventricle;
- and
- at least a third port to connect to at least a third lead to be intravascularly inserted through a coronary sinus with at least one electrode located to sense intrinsic signals from and provide electrical stimulation to a left ventricle and at least one electrode located to stimulate an IVC-LA fat pad located between an inferior vena cava and a left atrium;
- a right atrium detector connected to the first port of the header to sense an atrial rate based on intrinsic signals from the right atrium for use in determining an AV-Conducted Ventricular Tachyarrhythmia (AVCVT) event;
- a right ventricle detector connected to the second port of the header to sense a ventricular rate based on intrinsic signals from the right ventricle for use in determining the AVCVT event;
- a neural stimulator connected to the at least one third port of the header to selectively apply a neural stimulation signal to the IVC-LA fat pad during the AVCVT event to slow AV conduction and terminate the AVCVT event;
- and
- a cardiac pacing stimulator connected to the second port and the at least one third port to provide bradycardia support pacing to maintain at least a programmable minimum heart rate when the neural stimulation signal is applied to the IVC-LA fat pad and to provide biventricular pacing as part of a cardiac resynchronization therapy.
7 more elements
An implantable device, comprising:
- means for sensing an atrial tachyarrhythmia;
- means for stimulating an IVC-LA fat pad located between an inferior vena cava and a left atrium in response to a sensed atrial tachyarrhythmia to block AV conduction and terminate AV-Conducted Ventricular Tachyarrhythmia (AVCVT);
- and
- means for providing bradycardia support pacing when the IVC-LA fat pad is stimulated.
1 more element
A method to treat AV-Conducted Ventricular Tachyarrhythmia (AVCVT), comprising:
- sensing an AVCVT;
- stimulating an IVC-LA fat pad when the AVCVT is sensed to selectively block AV conduction;
- and
- providing bradycardia support pacing while the IVC-LA fat pad is stimulated.
1 more element
Dependencies are inferred from the claim text.