METHODS, DEVICES AND SYSTEMS FOR COUNTERPULSATION OF BLOOD FLOW TO AND FROM THE CIRCULATORY SYSTEM
First Claim
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1. A counterpulsation method of assisting the heart of a patient using a pump assist system, the method comprising:
- coupling a first conduit to the arterial system of the patient without entering the chest cavity or abdominal cavity of the patient, connecting a pulsatile pump to the first conduit, implanting the pump in the patient without entering the chest cavity or abdominal cavity of the patient, connecting a power supply to the pump, coordinating the operation of the pulsatile pump to suction blood from the arterial system through the first conduit while the heart is in systole and expel the blood into the first conduit and the arterial system while the heart is in diastole.
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Abstract
Counterpulsation methods and systems for assisting the heart of a patient involve, for example, coordinating the operation of a pulsatile pump to suction blood from an artery through a first conduit while the heart is in systole and expel the blood into the first conduit and the artery while the heart is in diastole.
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Citations
9 Claims
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1. A counterpulsation method of assisting the heart of a patient using a pump assist system, the method comprising:
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coupling a first conduit to the arterial system of the patient without entering the chest cavity or abdominal cavity of the patient, connecting a pulsatile pump to the first conduit, implanting the pump in the patient without entering the chest cavity or abdominal cavity of the patient, connecting a power supply to the pump, coordinating the operation of the pulsatile pump to suction blood from the arterial system through the first conduit while the heart is in systole and expel the blood into the first conduit and the arterial system while the heart is in diastole.
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2. A counterpulsation method of assisting the heart of a patient using a pump assist system, the method comprising:
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coupling a first conduit to the arterial system of the patient without entering the chest cavity or abdominal cavity of the patient, coupling a second conduit to the arterial system of the patient without entering the chest cavity or abdominal cavity of the patient, connecting a pump between the first and second conduits, implanting the pump in the patient without entering the chest cavity or abdominal cavity of the patient, connecting a power supply to the pump, coordinating the operation of the pump to suction blood from the arterial system through the first conduit while the heart is in systole and expel the blood into the arterial system while the heart is in diastole. - View Dependent Claims (3, 4)
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5. A counterpulsation method of assisting the heart of a patient using a pump assist system, the method comprising:
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coupling a first conduit to the arterial system of the patient without entering the chest cavity or abdominal cavity of the patient, connecting a pulsatile pump to the first conduit, connecting a power supply to the pump, coordinating the operation of the pulsatile pump to suction blood from the arterial system through the first conduit while the heart is in systole and expel the blood into the first conduit and the arterial system while the heart is in diastole. - View Dependent Claims (6, 7, 8)
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9. A pulsatile counterpulsation pump for use in assisting the heart of a patient, the pump comprising:
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a pump housing having a chamber and an inlet and an outlet in fluid communication with said chamber, a movable member mounted in said housing and operable to suction blood into said inlet in a first stroke and expel blood from said outlet in a second stroke, and means for evacuating said chamber of at least substantially all blood at the end of the second stroke.
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Specification