Circulatory support system
First Claim
1. A circulatory support device to supplement the pumping function of the heart to thereby enable the surgeon to perform various surgical procedures thereon, which comprises:
- an extracorporeal portable axial flow pump including a pump housing dimensioned for positioning directly on or adjacent to the chest area of a patient for performing extracorporeal circulation, and having inlet and outlet ports in substantial axial alignment, a rotating member rotatably mounted in the pump housing to impart mechanical energy to blood entering the inlet port and to direct the blood through the outlet port during extracorporeal circulation, the rotating member includes a first conical end in proximity to the inlet port, a second conical end in proximity to the outlet port, and a cylindrical mid-portion connecting the first and second conical ends having at least one blade member extending there from, a length of the second conical end is greater than a length of the first conical end;
an inlet tube connected to the inlet port of the pump housing and having an inlet open end portion dimensioned for insertion within the patient'"'"'s heart whereby blood is drawn from the heart through a lumen of the inlet tube and directed into the pump housing; and
an outlet tube connected to the outlet port of the pump housing and having an outlet end portion dimensioned for insertion within a major blood vessel associated with the heart whereby blood exiting the outlet port of the pump housing is conveyed through a lumen of the outlet tube into a major blood vessel for transfer by the arterial system of the patient.
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Accused Products
Abstract
A method for providing at least partial bypass of the heart to supplement the pumping function of the heart to thereby enable the surgeon to perform various surgical procedures thereon includes providing a circulatory assist system having a portable extracorporeal axial flow pump with a pump housing, a rotating pumping member disposed in the pump housing and inlet and outlet cannulated tubes respectively connected to inlet and outlet ports of the pump housing, accessing the patient'"'"'s left atrium of the heart with the inlet cannulated tube, accessing the aorta with the outlet cannulated tube, actuating the rotating pumping member to draw oxygenated blood from the left atrium of the heart through the lumen of the inlet cannulated tube and into the inlet port of the pump housing whereby the pumping member imparts mechanical energy to the oxygenated blood passing through the pump housing and directs the oxygenated blood through the outlet port and through the lumen of the outlet cannulated tube to be transferred by the aorta to the systemic arteries and permitting the right side of the heart to function whereby oxygen-depleted blood returning through the systemic veins to the right atrium is directed through the right ventricle to the patient'"'"'s lungs for oxygenation and subsequent pulmonary circulation.
175 Citations
25 Claims
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1. A circulatory support device to supplement the pumping function of the heart to thereby enable the surgeon to perform various surgical procedures thereon, which comprises:
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an extracorporeal portable axial flow pump including a pump housing dimensioned for positioning directly on or adjacent to the chest area of a patient for performing extracorporeal circulation, and having inlet and outlet ports in substantial axial alignment, a rotating member rotatably mounted in the pump housing to impart mechanical energy to blood entering the inlet port and to direct the blood through the outlet port during extracorporeal circulation, the rotating member includes a first conical end in proximity to the inlet port, a second conical end in proximity to the outlet port, and a cylindrical mid-portion connecting the first and second conical ends having at least one blade member extending there from, a length of the second conical end is greater than a length of the first conical end; an inlet tube connected to the inlet port of the pump housing and having an inlet open end portion dimensioned for insertion within the patient'"'"'s heart whereby blood is drawn from the heart through a lumen of the inlet tube and directed into the pump housing; and an outlet tube connected to the outlet port of the pump housing and having an outlet end portion dimensioned for insertion within a major blood vessel associated with the heart whereby blood exiting the outlet port of the pump housing is conveyed through a lumen of the outlet tube into a major blood vessel for transfer by the arterial system of the patient.
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2. A method for performing extracorporeal circulation by providing at least partial bypass of the heart to supplement the pumping function of the heart to thereby enable the surgeon to perform various surgical procedures thereon, the heart having a left atrium for receiving oxygenated blood from the lungs and a left ventricle for pumping the oxygenated blood through the aorta to the systemic arteries, and a right atrium for receiving oxygen-depleted blood from the systemic veins and for directing the oxygen-depleted blood through the pulmonary artery and into the lungs for oxygenation, the method comprising the steps of:
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providing a circulatory assist system including a portable extracorporeal axial flow pump having a pump housing defining a longitudinal axis, the pump housing having an inlet port and an outlet port, a rotating pumping member disposed in the pump housing, an inlet tube having a first end connected to the inlet port and a second end for contact with the body, an outlet tube having a first end connected to the outlet port and a second end for contact with the body, each tube having an axial lumen between the first and second ends defining a blood flow path for conveyance of blood therealong, the rotating pumping member includes a first conical end in proximity to the inlet port, a second conical end in proximity to the outlet port, and a cylindrical mid-portion connecting the first and second conical ends having at least one blade member extending there from, a length of the second conical end is greater than a length of the first conical end; accessing the left ventricle of the heart with the inlet tube such that the second end of the inlet tube is in fluid communication with the left ventricle; accessing the aorta with the outlet tube such that the second end of the outlet tube is in fluid communication with the aorta; actuating the rotating pumping member to draw oxygenated blood from the left ventricle of the heart through the second end of the inlet tube and through the axial lumen of the inlet tube and into the inlet port of the pump housing whereby the pumping member imparts mechanical energy to the oxygenated blood passing through the pump housing and directs the oxygenated blood through the outlet port and through the axial lumen of the outlet tube and the second end of the outlet tube to be transferred by the aorta to the systemic arteries; and permitting the right side of the heart to function whereby oxygen-depleted blood returning through the systemic veins to the right atrium is directed through the right ventricle to the patient'"'"'s lungs for oxygenation and subsequent pulmonary circulation. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9)
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10. A method for providing at least partial bypass of the heart by supporting the left side of the heart to thereby enable the surgeon to perform various surgical procedures thereon, the heart having a left atrium for receiving oxygenated blood from the lungs and a left ventricle for pumping the oxygenated blood through the aorta to the systemic arteries, and a right atrium for receiving oxygen-depleted blood from the systemic veins and a right ventricle for directing the oxygen-depleted blood through the pulmonary artery and into the lungs for oxygenation, the method comprising the steps of:
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providing a circulatory assist system including a portable extracorporeal axial flow pump having a pump housing defining a longitudinal axis, the pump housing having an inlet port and an outlet port, a rotating pumping member disposed in the pump housing and mounted via a rotating shaft to the pump housing, an inlet tube having a first end connected to the inlet port and a second end for contact with the body, an outlet tube having a first end connected to the outlet port and a second end for contact with the body, each tube having an axial lumen between the first and second ends defining a blood flow path for conveyance of blood therealong, the rotating pumping member includes a first conical end in proximity to the inlet port, a second conical end in proximity to the outlet port, and a cylindrical mid-portion connecting the first and second conical ends having at least one blade member extending there from, wherein a length of the second conical end is greater than a length of the first conical end; accessing the patient'"'"'s left atrium of the heart with the inlet tube such that the second end of the inlet tube is in fluid communication with the left atrium; accessing the aorta with the outlet tube such that the second end of the outlet tube is in fluid communication with the aorta; actuating the rotating pumping member to draw oxygenated blood from the left atrium of the heart through the second end of the inlet tube and through the axial lumen of the inlet tube and into the inlet port of the pump housing whereby the pumping member imparts mechanical energy to the oxygenated blood passing through the pump housing and directs the oxygenated blood through the outlet port and through the axial lumen of the outlet tube and the second end of the outlet tube to be transferred by the aorta to the systemic arteries; and permitting the right side of the heart to function whereby oxygen-depleted blood returning through the systemic veins to the right atrium is directed through the right ventricle to the patient'"'"'s lungs for oxygenation and subsequent pulmonary circulation. - View Dependent Claims (11, 12, 13, 14)
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15. A method for providing at least partial bypass of the heart by supporting the heart to thereby enable the surgeon to perform various surgical procedures thereon, the heart having a left atrium for receiving oxygenated blood from the lungs and a left ventricle for pumping the oxygenated blood through the aorta to the systemic arteries, and a right atrium for receiving oxygen-depleted blood from the systemic veins and a right ventricle for directing the oxygen-depleted blood through the pulmonary artery and into the lungs for oxygenation, the method comprising the steps of:
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supporting the pumping function of the left side of the heart by; providing a circulatory assist system including a portable extracorporeal axial flow pump having a pump housing defining a longitudinal axis, the pump housing having an inlet port and an outlet port, the outlet port being in substantial axial alignment with the inlet port, a rotating pumping member disposed in the pump housing and mounted via a rotating shaft to the pump housing, an inlet tube having a first end connected to the inlet port and a second end for contact with the body, an outlet tube having a first end connected to the outlet port and a second end for contact with the body, each tube having an axial lumen between the first and second ends defining a blood flow path for conveyance of blood therealong, the rotating pumping member includes a first conical end in proximity to the inlet port, a second conical end in proximity to the outlet port, and a cylindrical mid-portion connecting the first and second conical ends having at least one blade member extending there from, a length of the second conical end is greater than a length of the first conical end; accessing the patient'"'"'s left atrium of the heart with the inlet tube such that the second end of the inlet tube is in fluid communication with the left atrium; accessing the aorta with the outlet tube such that the second end of the outlet tube is in fluid communication with the aorta; actuating the rotating pumping member to draw oxygenated blood from the left atrium of the heart through the second end of the inlet tube and through the axial lumen of the inlet tube and into the inlet port of the pump housing whereby the pumping member imparts mechanical energy to the oxygenated blood passing through the pump housing and directs the oxygenated blood through the outlet port and through the axial lumen of the outlet tube and the second end of the outlet tube to be transferred by the aorta to the systemic arteries; and supporting the pumping function of the right side of the heart while permitting the patient'"'"'s lungs to function in oxygenating the blood. - View Dependent Claims (16)
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17. A circulatory support device, which comprises:
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a pump housing including an inlet end portion defining an inlet port for permitting blood to enter the pump housing and an outlet end portion defining an outlet port for permitting blood to exit the pump housing for performing extracorporeal circulation, the inlet and outlet end portions each having central hub portions with straightener blades extending therefrom for facilitating passage of blood through the pump housing during extracorporeal circulation; a rotatable member mounted for rotational movement to the central hub portions of the pump housing, the rotatable member including at least one impeller blade having a curved surface for imparting pump energy to blood passing through the pump housing, the rotatable member having a magnetically actuated rotor; and a motor stator disposed in the pump housing, the motor stator and the rotatable member having an annular space therebetween defining a blood path for blood to flow through the pump housing, the motor stator having at least one stator blade extending from an inner surface thereof, the one stator blade and the one impeller blade of the rotatable member cooperatively configured to exert a substantially axial flow pumping energy to blood flowing along the blood path. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A method for performing extracorporeal circulation by providing at least partial bypass of the heart to supplement the pumping function of the heart to thereby enable the surgeon to perform various surgical procedures thereon, the heart having a left atrium for receiving oxygenated blood from the lungs and a left ventricle for pumping the oxygenated blood through the aorta to the systemic arteries, and a right atrium for receiving oxygen-depleted blood from the systemic veins and a right ventricle for pumping the oxygen-depleted blood through the pulmonary artery and into the lungs for oxygenation, the method comprising the steps of:
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supplementing the pumping function of the left side of the heart by; providing a circulatory assist system including a portable extracorporeal axial flow pump having a pump housing defining a longitudinal axis, the pump housing having an inlet port and an outlet port, the outlet port being in substantial axial alignment with the inlet port, a rotating pumping member disposed in the pump housing, an inlet tube having a first end connected to the inlet port and a second end for contact with the body, an outlet tube having a first end connected to the outlet port and a second end for contact with the body, each tube having an axial lumen between the first and second ends defining a blood flow path for conveyance of blood therealong, the rotating pumping member includes a first conical end in proximity to the inlet port, a second conical end in proximity to the outlet port, and a cylindrical mid-portion connecting the first and second conical ends having at least one blade member extending there from, wherein a length of the second conical end is greater than a length of the first conical end; accessing the left ventricle of the heart with the inlet tube such that the second end of the inlet tube is in fluid communication with the left ventricle; accessing the aorta with the outlet tube such that the second end of the outlet tube is in fluid communication with the aorta;
actuating the rotating pumping member to draw oxygenated blood from the left ventricle of the heart through the second end of the inlet tube and through the axial lumen of the inlet tube and into the inlet port of the pump housing whereby the pumping member imparts mechanical energy to the oxygenated blood passing through the pump housing and directs the oxygenated blood through the outlet port and through the axial lumen of the outlet tube and the second end of the outlet tube to be transferred by the aorta to the systemic arteries; andsupplementing the pumping function of the right side of the heart while permitting the patient'"'"'s lungs to function in oxygenating the blood. - View Dependent Claims (25)
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Specification