System and method for managing detrimental cardiac remodeling
First Claim
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1. An apparatus for minimizing cardiac remodeling of a non-arrhythmic patient comprising:
- a heart stimulation device comprising control circuitry, wherein the control circuitry is configured with instructions for stimulating cardiac tissue, wherein the cardiac tissue comprises healthy and compromised areas;
a left ventricular electrode group, wherein the left ventricular electrode group comprises LV electrodes attached to the left ventricle at increasing distances from the AV node; and
a right ventricular electrode group, wherein the right ventricular electrode group comprises RV electrodes attached to the left ventricle at increasing distances from the AV node,wherein the heart stimulation device is configured to attach to the LV and RV electrodes, and wherein instructions for stimulating cardiac tissue include instructions configured to cause the control circuitry to perform operations comprising;
generating a timing signal coincident with a refractory period; and
in response to the timing signal, sending a series of biphasic pulses to the LV and RV electrodes, wherein the series of biphasic pulses is sequenced such that an initial pulse arrives at an LV electrode and an RV electrode nearest the AV junction, and subsequent pulses arrive at an LV and an RV electrode progressively further from the AV junction.
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Abstract
A system and method for managing and inhibiting cardiac remodeling in MI patients. Bi-ventricular stimulation is constantly provided with and without sensing to encourage normal pumping of the heart on a consistent basis. Pulses are administered using an anodal pulse followed by a cathodal pulse to stimulate cardiac muscle contraction. Stem cells are administered to MI areas to encourage regeneration of cardiac tissue in the damaged area. Stimulation may be provided to both healthy and compromised cardiac tissue.
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Citations
21 Claims
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1. An apparatus for minimizing cardiac remodeling of a non-arrhythmic patient comprising:
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a heart stimulation device comprising control circuitry, wherein the control circuitry is configured with instructions for stimulating cardiac tissue, wherein the cardiac tissue comprises healthy and compromised areas; a left ventricular electrode group, wherein the left ventricular electrode group comprises LV electrodes attached to the left ventricle at increasing distances from the AV node; and a right ventricular electrode group, wherein the right ventricular electrode group comprises RV electrodes attached to the left ventricle at increasing distances from the AV node, wherein the heart stimulation device is configured to attach to the LV and RV electrodes, and wherein instructions for stimulating cardiac tissue include instructions configured to cause the control circuitry to perform operations comprising; generating a timing signal coincident with a refractory period; and in response to the timing signal, sending a series of biphasic pulses to the LV and RV electrodes, wherein the series of biphasic pulses is sequenced such that an initial pulse arrives at an LV electrode and an RV electrode nearest the AV junction, and subsequent pulses arrive at an LV and an RV electrode progressively further from the AV junction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for minimizing cardiac remodeling of a non-arrhythmic patient comprising:
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a heart stimulation device comprising control circuitry, wherein the control circuitry is configured with instructions for stimulating cardiac tissue, wherein the cardiac tissue comprises healthy and compromised areas; a left ventricular electrode group, wherein the left ventricular electrode group comprises LV electrodes attached to the left ventricle at increasing distances from the AV node; a right ventricular electrode group, wherein the right ventricular electrode group comprises RV electrodes attached to the left ventricle at increasing distances from the AV node; and a sensor configured to sense excitation of a heart chamber, wherein the heart stimulation device is configured to attach to the LV and RV electrodes and to the sensor, and wherein the instructions for stimulating cardiac tissue include instructions configured to cause the control circuitry to perform operations comprising; in response to a signal from the sensor, sending a series of biphasic pulses to the LV and RV electrodes, wherein the series of biphasic pulses is sequenced such that an initial pulse arrives at an LV electrode and an RV electrode nearest the AV junction and subsequent pulses arrive at an LV and an RV electrode progressively further from the AV junction. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus for minimizing cardiac remodeling of a non-arrhythmic patient comprising:
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a heart stimulation device comprising control circuitry, wherein the control circuitry is configured with instructions for stimulating cardiac tissue, wherein the cardiac tissue comprises; a healthy area; and a compromised area that has stem cells deposited thereon; a left ventricular electrode group, wherein the left ventricular electrode group comprises LV electrodes attached to the left ventricle at increasing distances from the AV node; a right ventricular electrode group, wherein the right ventricular electrode group comprises RV electrodes attached to the left ventricle at increasing distances from the AV node; and a sensor configured to sense excitation of a heart chamber, wherein the heart stimulation device is configured to attach to the LV and RV electrodes and to the sensor, and wherein instructions for stimulating cardiac tissue include instructions configured to cause the control circuitry to perform operations comprising; in response to a signal from the sensor, sending biphasic stimulation to the LV and RV electrodes, wherein the series of biphasic pulses is sequenced such that an initial pulse arrives at an LV electrode and an RV electrode nearest the AV junction, and subsequent pulses arrive at an LV and an RV electrode progressively further from the AV junction; and wherein the biphasic stimulation comprises; a first stimulation phase having a first phase polarity, a first phase amplitude, a first phase shape, and a first phase duration, so as to precondition the myocardium to accept subsequent stimulation, and a second stimulation phase having a second phase polarity, a second phase amplitude that is larger in absolute value than the first phase amplitude, a second phase shape, and a second phase duration. - View Dependent Claims (20, 21)
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Specification