Method and system for closed chest blood flow support
First Claim
1. A system for assisting flow of blood by a patient'"'"'s heart comprising:
- a transseptal cannula adapted to be inserted percutaneously in the jugular vein and extend through the atrial septum from the right atrium to the left atrium;
a blood pump mechanism having a blood pump for pumping blood received from the left atrium through the transseptal cannula that has been oxygenated, the blood pump inlet connected to the transseptal cannula; and
a perfusion cannula adapted to be inserted percutaneously in the axillary artery for returning oxygenated blood to the arterial system of the patient, the perfusion cannula connected to the blood pump outlet.
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Accused Products
Abstract
A system for assisting flow of blood by a patient'"'"'s heart. The system includes a transseptal cannula adapted to be inserted percutaneously in the jugular vein and extend through the atrial septum from the right atrium to the left atrium. The system includes a blood pump mechanism having a blood pump for pumping blood received from the transseptal cannula that has been oxygenated at specified flow rates over a range of physiological pressures. The blood pump is connected to the transseptal cannula. The system includes a perfusion cannula adapted to be inserted percutaneously in the axillary artery for returning oxygenated blood to the atrial system of the patient. The perfusion cannula is connected to the blood pump. A method for assisting blood flow by a patient'"'"'s heart. The method includes the steps of inserting percutaneously in the jugular vein of the patient and extending through the atrial septum from the right atrium to the left atrium a transseptal cannula. Next there is the step of inserting percutaneously in the axillary artery a perfusion cannula for returning oxygenated blood to the arterial system of the patient. Then there is the step of pumping blood with a blood pump connected to the transseptal cannula and the perfusion cannula at specified flow rates over a range of physiological pressures.
53 Citations
51 Claims
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1. A system for assisting flow of blood by a patient'"'"'s heart comprising:
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a transseptal cannula adapted to be inserted percutaneously in the jugular vein and extend through the atrial septum from the right atrium to the left atrium;
a blood pump mechanism having a blood pump for pumping blood received from the left atrium through the transseptal cannula that has been oxygenated, the blood pump inlet connected to the transseptal cannula; and
a perfusion cannula adapted to be inserted percutaneously in the axillary artery for returning oxygenated blood to the arterial system of the patient, the perfusion cannula connected to the blood pump outlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 41, 42, 44, 45, 48, 49, 50, 51)
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29. A method for assisting blood flow by a patient'"'"'s heart comprising the steps of:
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inserting percutaneously in the jugular vein of the patient and extending through the atrial septum from the right atrium to the left atrium a transseptal cannula;
inserting percutaneously in the axillary artery a perfusion cannula for returning oxygenated blood to the arterial system of the patient; and
pumping blood with a blood pump connected to the transseptal cannula and the perfusion cannula at specified flow rates over a range of physiological pressures. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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43. An apparatus for pumping blood of a patient comprising:
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a blood pump adapted to pump blood of a patient and be connected to the patient to pump the blood of the patient; and
a controller for controlling the pump wherein the pump automatically starts slowly, and gradually increases in speed over time to a desired operational speed and thus the damage to the blood by the pump is minimized.
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46. A system for pumping blood of a patient comprising:
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a blood pump having an impeller; and
a controller for creating a change, and limiting the rate of this change, of impeller rotational speed, blood flow, and pressure rise across the pump to limit damage to blood cells and to allow some mitigation of possible accumulation of thrombus. - View Dependent Claims (47)
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Specification