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 femoral vein and extend through the atrial septum from the right atrium to the left atrium;
an extracorporeal 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, the blood pump mechanism includes a transseptal clamp mechanism which clamps the blood pump to the transseptal cannula to avoid undesired disconnection of the blood pump and the transseptal cannula and undesired leaks in a connection joint formed between the blood pump and the transseptal cannula; and
a perfusion cannula adapted to be inserted percutaneously in the femoral artery for returning oxygenated blood to the arterial system of the patient, the perfusion cannula connected to the blood pump outlet, and tubing which connects the blood pump to the transseptal cannula and the perfusion cannula, the blood pump connected by the tubing which is within three feet in length of where the transseptal cannula and the perfusion cannula are positioned to enter the patient.
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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 femoral 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 femoral 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 femoral 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 femoral 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.
78 Citations
45 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 femoral vein and extend through the atrial septum from the right atrium to the left atrium;
an extracorporeal 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, the blood pump mechanism includes a transseptal clamp mechanism which clamps the blood pump to the transseptal cannula to avoid undesired disconnection of the blood pump and the transseptal cannula and undesired leaks in a connection joint formed between the blood pump and the transseptal cannula; and
a perfusion cannula adapted to be inserted percutaneously in the femoral artery for returning oxygenated blood to the arterial system of the patient, the perfusion cannula connected to the blood pump outlet, and tubing which connects the blood pump to the transseptal cannula and the perfusion cannula, the blood pump connected by the tubing which is within three feet in length of where the transseptal cannula and the perfusion cannula are positioned to enter the patient. - 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, 29, 30, 31, 32, 33)
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34. A method for assisting blood flow by a patient'"'"'s heart comprising the steps of:
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inserting percutaneously in the femoral 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 femoral artery a perfusion cannula for returning oxygenated blood to the arterial system of the patient;
clamping a transseptal clamp mechanism to tubing within three feet of length connected to the transseptal cannula and a blood pump to avoid undesired disconnection of the blood pump and the transseptal cannula and undesired leaks at a connection joint formed between the blood pump and the transseptal cannula; and
pumping blood with the blood pump through the tubing connected to the transseptal cannula and within three feet of length connected to the blood pump and the perfusion cannula at specified flow rates over a range of physiological pressures. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. 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 a vein and extend through the atrial septum from the right atrium to the left atrium;
an extracorporeal 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;
a controller connected to the blood pump through which the operation of the blood pump speed is adjusted; and
a perfusion cannula adapted to be inserted percutaneously in an artery for returning oxygenated blood to the arterial system of the patient, the perfusion cannula connected to the blood pump outlet, the extracorporeal blood pump is disposed within three feet of where the transseptal cannula and the output cannula are positioned to enter the patient.
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Specification