System and method for treating heart tissue
First Claim
1. A system for treating heart muscle tissue, comprising:
- a coronary sinus occlusion catheter including a distal tip portion comprising an adjustable occlusion device; and
a control system to selectively activate the occlusion device for substantially occluding the coronary sinus during occlusion phases, and to deactivate the occlusion device for substantially non-occluding the coronary sinus during release phases, wherein the control system includes a sensor signal input to receive a pressure sensor data signal indicative of a pressure in the coronary sinus at least during the occlusion phases; and
wherein the control system is configured to determine, in response to stored data points of the pressure sensor data signal during each of the occlusion phases, a cumulative dosage value indicative of cumulative effects of coronary sinus occlusion catheter treatment over two or more successive occlusion phases, wherein the control system comprises a display unit that shows the calculated cumulative dosage value, an estimated amount of salvaged heart muscle tissue based upon the calculated cumulative dosage value, or both.
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Accused Products
Abstract
Some embodiments of a system or method for treating heart tissue can include a control system and catheter device operated in a manner to intermittently occlude a heart vessel for controlled periods of time that provide redistribution of blood flow. In particular embodiments, the system can be configured to provide an estimation of the cumulative effects of the treatment. For example, some embodiments of the system or method can treat myocardium that is at risk of infarction by intermittently altering blood flow in a venous system to induce microcirculation within the myocardium, and can output a cumulative dosage value indicative of a measurement of progress of reducing an infarct size.
54 Citations
19 Claims
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1. A system for treating heart muscle tissue, comprising:
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a coronary sinus occlusion catheter including a distal tip portion comprising an adjustable occlusion device; and a control system to selectively activate the occlusion device for substantially occluding the coronary sinus during occlusion phases, and to deactivate the occlusion device for substantially non-occluding the coronary sinus during release phases, wherein the control system includes a sensor signal input to receive a pressure sensor data signal indicative of a pressure in the coronary sinus at least during the occlusion phases; and wherein the control system is configured to determine, in response to stored data points of the pressure sensor data signal during each of the occlusion phases, a cumulative dosage value indicative of cumulative effects of coronary sinus occlusion catheter treatment over two or more successive occlusion phases, wherein the control system comprises a display unit that shows the calculated cumulative dosage value, an estimated amount of salvaged heart muscle tissue based upon the calculated cumulative dosage value, or both. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for treating heart muscle tissue, comprising:
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a coronary sinus occlusion catheter including a distal tip portion comprising an adjustable occlusion device; and a control system to selectively activate the occlusion device for substantially occluding the coronary sinus during occlusion phases, and to deactivate the occlusion device for substantially non-occluding the coronary sinus during release phases, wherein the control system includes a sensor signal input to receive a pressure sensor data signal indicative of a pressure in the coronary sinus at least during the occlusion phases; and wherein the control system is configured to determine, in response to stored data points of the pressure sensor data signal during each of the occlusion phases, a cumulative dosage value, wherein the control system comprises a display unit that shows the calculated cumulative dosage value, an estimated amount of salvaged heart muscle tissue based upon the calculated cumulative dosage value, or both; wherein the control system stores a computer-executable algorithm that calculates the cumulative dosage value to provide a numerical value indicative of cumulative effects of redistributing blood flow over a series of the occlusion phases; wherein the control system is configured to calculate the estimated amount of salvaged heart muscle tissue based upon a predetermined relationship model between the estimated amount of salvaged heart muscle tissue and the calculated cumulative dosage value. - View Dependent Claims (13)
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14. A system for treating heart muscle tissue, comprising:
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a coronary sinus occlusion catheter including a distal tip portion comprising an adjustable occlusion device; and a control system to selectively activate the occlusion device for substantially occluding the coronary sinus during occlusion phases, and to deactivate the occlusion device for substantially non-occluding the coronary sinus during release phases, wherein the control system includes a sensor signal input to receive a pressure sensor data signal indicative of a pressure in the coronary sinus at least during the occlusion phases; and wherein the control system is configured to determine, in response to stored data points of the pressure sensor data signal during each of the occlusion phases, a cumulative dosage value, wherein the control system comprises a display unit that shows the calculated cumulative dosage value, an estimated amount of salvaged heart muscle tissue based upon the calculated cumulative dosage value, or both; wherein the control system is configured to calculate the estimated amount of salvaged heart muscle tissue based upon a predetermined relationship model between the estimated amount of salvaged heart muscle tissue and the calculated cumulative dosage value, and wherein the control system comprises a display unit that contemporaneously displays the calculated cumulative dosage value and an estimated amount of salvaged heart muscle tissue based upon the calculated cumulative dosage value; and wherein the estimated amount of salvaged heart muscle tissue displayed by the control system is an estimated myocardial salvage index, and wherein the control system stores a computer-executable algorithm that calculates the estimated myocardial salvage index based upon a linear relationship model with the calculated cumulative dosage value. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification