Left and right side heart support
First Claim
1. A method of providing cardiac support comprising providing an inner cannula disposed within an outer cannula, the outer cannula including a first fluid inlet and the inner cannula including a second fluid inlet, providing a first outflow cannula including a first fluid outlet, the first outflow cannula being in communication with the outer cannula to define a first flow path, providing a second outflow cannula including a second fluid outlet, the second outflow cannula being in communication with the inner cannula to define a second flow path, introducing the outer cannula through an incision in the right atrium of a patient'"'"'s heart to place the first fluid inlet in the right atrium, introducing the inner cannula through the outer cannula to pass the second fluid inlet through the atrial septum and into at least one of the left atrium and the left ventricle, introducing the first outflow cannula to place the first fluid outlet in the pulmonary artery, introducing the second outflow cannula to place the second fluid outlet in the aorta, pumping blood from the right atrium to the pulmonary artery through the first flow path to provide right side cardiac support, and pumping blood from at least one of the left atrium and the left ventricle to the aorta through the second flow path to provide left heart support.
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Accused Products
Abstract
A cannulation system for cardiac support uses an inner cannula disposed within an outer cannula. The outer cannula includes a fluid inlet for placement within the right atrium of a heart. The inner cannula includes a fluid inlet extending through the fluid inlet of the outer cannula and the atrial septum for placement within at least one of the left atrium and left ventricle of the heart. The cannulation system also employs a pumping assembly coupled to the inner and outer cannulas to withdraw blood from the right atrium for delivery to the pulmonary artery to provide right heart support, or to withdraw blood from at least one of the left atrium and left ventricle for delivery into the aorta to provide left heart support, or both.
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Citations
9 Claims
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1. A method of providing cardiac support comprising
providing an inner cannula disposed within an outer cannula, the outer cannula including a first fluid inlet and the inner cannula including a second fluid inlet, providing a first outflow cannula including a first fluid outlet, the first outflow cannula being in communication with the outer cannula to define a first flow path, providing a second outflow cannula including a second fluid outlet, the second outflow cannula being in communication with the inner cannula to define a second flow path, introducing the outer cannula through an incision in the right atrium of a patient'"'"'s heart to place the first fluid inlet in the right atrium, introducing the inner cannula through the outer cannula to pass the second fluid inlet through the atrial septum and into at least one of the left atrium and the left ventricle, introducing the first outflow cannula to place the first fluid outlet in the pulmonary artery, introducing the second outflow cannula to place the second fluid outlet in the aorta, pumping blood from the right atrium to the pulmonary artery through the first flow path to provide right side cardiac support, and pumping blood from at least one of the left atrium and the left ventricle to the aorta through the second flow path to provide left heart support.
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6. A method of providing cardiac support comprising
providing a cannula assembly comprising an inner cannula disposed within an outer cannula, the outer cannula including a first fluid inlet and the inner cannula including a second fluid inlet, coupling the cannula assembly to a pumping assembly, introducing the outer cannula through an incision in the right atrium of a patient'"'"'s heart to place the first fluid inlet in the right atrium, introducing the inner cannula through the outer cannula ot pass the second fluid inlet through the atrial septum and into at least one of the left atrium and the left ventricle, and pumping blood from the right atrium to the pulmonary artery to provide right side cardiac support.
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8. A method of providing cardiac support comprising
providing a cannula assembly comprising an inner cannula disposed within an outer cannula, the outer cannula including a first fluid inlet and the inner cannula including a second fluid inlet, coupling the cannula assembly to a pumping assembly, introducing the outer cannula through an incision in the right atrium of a patient'"'"'s heart to place the first fluid inlet in the right atrium, introducing the inner cannula through the outer cannula ot pass the second fluid inlet through the atrial septum and into at least one of the left atrium and the left ventricle, and pumping blood from the at least one of the left atrium and the left ventricle to the aorta to provide left side cardiac support.
Specification