Apparatus and method for bi-ventricular pacing and sensing in an implantable device
First Claim
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1. An implantable cardiac stimulation device, comprising:
- a first terminal for connection to a left ventricular pacing electrode, said left ventricular pacing electrode for placement in electrical contact with a left ventricle;
a second terminal for connection to a right ventricular pacing electrode, said right ventricular pacing electrode for placement in a right ventricle;
a pulse generator;
switch means for connecting any combination of said first and second terminals to said pulse generator to deliver electrical therapy to said left ventricular pacing electrode, said right ventricular pacing electrode, or both said left and right ventricular pacing electrodes;
wherein said switch means comprises;
a first switch connecting said pulse generator to said first terminal; and
a second switch connecting said pulse generator to said second terminal; and
control means for controlling operation of said pulse generator and said switch means;
wherein said control means comprises;
a programmable microcontroller; and
computer readable program code means for causing said microcontroller to control said switch means to close only one of said first and second switches to provide left ventricular pacing to a heart, to close only the other of said first and second switches to provide right ventricular pacing, and to close both of said first and second switches at differing times to provide bi-ventricular pacing with an interventricular delay.
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Abstract
An apparatus and method for pacing and sensing the right side as well as the left side of the heart (bi-ventricular pacing and sensing). The bi-ventricular pacing and sensing is accomplished by introducing an additional dedicated pacing and sensing path for the left ventricle of the heart. Two additional terminals are added to the pacing and sensing path for the left ventricle to enable pacing and sensing in the left ventricle of the heart. In addition, switches are added to the pacing path for the left ventricle of the heart. The switches are controlled by a programmable controller and allow the selection of the desired ventricle(s) in which pacing is to occur.
13 Citations
15 Claims
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1. An implantable cardiac stimulation device, comprising:
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a first terminal for connection to a left ventricular pacing electrode, said left ventricular pacing electrode for placement in electrical contact with a left ventricle; a second terminal for connection to a right ventricular pacing electrode, said right ventricular pacing electrode for placement in a right ventricle; a pulse generator; switch means for connecting any combination of said first and second terminals to said pulse generator to deliver electrical therapy to said left ventricular pacing electrode, said right ventricular pacing electrode, or both said left and right ventricular pacing electrodes; wherein said switch means comprises; a first switch connecting said pulse generator to said first terminal; and a second switch connecting said pulse generator to said second terminal; and control means for controlling operation of said pulse generator and said switch means; wherein said control means comprises; a programmable microcontroller; and computer readable program code means for causing said microcontroller to control said switch means to close only one of said first and second switches to provide left ventricular pacing to a heart, to close only the other of said first and second switches to provide right ventricular pacing, and to close both of said first and second switches at differing times to provide bi-ventricular pacing with an interventricular delay. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for operating a cardiac stimulation device having a first terminal for connection to a right ventricular pacing electrode, a second terminal for connection to a left ventricular pacing electrode, and a third terminal, the method comprising:
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using a pulse generator to generate an electrical pulse for delivery to a heart; electrically configuring switch means to deliver said electrical pulse to the first terminal when pulse delivery is desired to a right ventricle of the heart, said switch means comprising closing a first switch to connect said pulse generator to the first terminal and opening a second switch to isolate said pulse generator from the second terminal; electrically configuring said switch means to deliver said electrical pulse to the second terminal when pulse delivery is desired to a left ventricle of the heart, said switch means comprising opening said first switch to isolate said pulse generator from the first terminal and closing the second switch to connect said pulse generator to the second terminal; and electrically configuring said switch means to deliver said electrical pulse to both the first and second terminals when bi-ventricular pulse delivery is desired, said switch means comprising closing the first switch at a time t0 to connect said pulse generator to the first terminal, closing the second switch at a time t1 to connect said pulse generator to the second terminal wherein t0 differs from t1 to provide bi-ventricular pacing with an interventricular delay. - View Dependent Claims (9, 10, 11, 12)
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13. An implantable cardiac stimulation device, comprising:
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a pulse generator; a left ventricular pacing electrode switchably coupled to said pulse generator; a right ventricular pacing electrode switchably coupled to said pulse generator; a switching system to connect any combination of said left ventricular pacing electrode and said right ventricular pacing electrode to deliver pacing pulses to a left ventricle, a right ventricle, or both the left and right ventricles; and a controller to control operation of said pulse generator and said switching system; wherein said controller causes said switching system to close only one of said first and second switches to provide left ventricular pacing to a heart, to close only the other of said first and second switches to provide right ventricular pacing, and to close both of said first and second switches at differing time to provide bi-ventricular pacing with an interventricular delay. - View Dependent Claims (14, 15)
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Specification