Methods and devices providing transmyocardial blood flow to the arterial vascular system of the heart
First Claim
1. A method for increasing the flow of blood to a selected site in a patient'"'"'s arterial vascular system of the heart, the method comprising the steps of:
- creating a channel for blood flow from an oxygenated blood source to the selected site in the arterial vascular system of the heart;
maintaining the channel in an open position for blood flow through diastolic and systolic cycles of the heart; and
regulating the blood flow in the channel to minimize blood flow from the coronary vascular system to the blood source during diastole.
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Abstract
This invention relates to methods and devices providing transmyocardial blood flow or coronary revascularization for the treatment of coronary atherosclerosis and resulting myocardial ischemia by increasing the flow of blood from one or more oxygenated blood sources within the patient to one or more sites selected in the arterial vascular system of the heart using a channel for maintaining and regulating blood flow therebetween. A valved conduit or a self-maintained channel is created between the left ventricle reservoir of oxygenated blood and the coronary artery distal to an area of obstruction by surgical and percutaneous methods. Preferably, the conduit or self-maintained channel integrally regulates the flow of blood between the oxygenated blood source and the site selected in the arterial vascular system of the heart wherein an increase in blood flow is desired.
182 Citations
21 Claims
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1. A method for increasing the flow of blood to a selected site in a patient'"'"'s arterial vascular system of the heart, the method comprising the steps of:
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creating a channel for blood flow from an oxygenated blood source to the selected site in the arterial vascular system of the heart;
maintaining the channel in an open position for blood flow through diastolic and systolic cycles of the heart; and
regulating the blood flow in the channel to minimize blood flow from the coronary vascular system to the blood source during diastole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for performing a transmyocardial coronary revascularization procedure for the treatment of coronary atherosclerosis caused by an obstruction in the arterial vascular system, the method comprising the steps of:
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creating a channel for blood flow from an oxygenated blood source to the arterial vascular system distal to the area of obstruction;
maintaining the channel in an open position for blood flow through the diastole and systole cycles of the heart; and
regulating the blood flow in the channel to minimize blood flow from the arterial vascular system to the blood source during the diastolic cycle of the heart. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for treating an obstruction in a patient'"'"'s cardiovascular system using a non-expandable conduit made of biocompatible material, the method comprising the steps of:
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inserting the conduit completely through the myocardium of the patient'"'"'s heart with one end of the conduit extending into the left ventricle and the other end of the conduit extending into the arterial vascular system distal to the area of obstruction;
maintaining the conduit in an open position for blood flow through the diastolic and systolic cycles of the heart;
regulating the blood flow in the channel to minimize blood flow from the arterial vascular system to the left ventricle during the diastolic cycle of the heart. - View Dependent Claims (20)
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21-38. -38. Canceled
Specification