Left ventricular assist device and method for temporary and permanent procedures
First Claim
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1. A method for relieving the hemodynamic burden on a diseased left ventricle in the heart of a patient, comprising the steps of:
- implanting a shunt within the patient'"'"'s chest cavity between the interior of the patient'"'"'s left atrium and the patient'"'"'s major arterial system;
positioning an impeller in said shunt;
implanting a power source within the patient'"'"'s chest cavity; and
actuating said impeller with the power source so as to effectuate a substantially non-turbulent, non-traumatic flow of blood from the left atrium directly into the patient'"'"'s arterial system.
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Abstract
A left ventricular assist device and method is utilized to relieve the hemodynamic burden on a diseased left ventricle in the heart of a patient by inserting a shunt having an impellar for effectuating a substantially non-turbulent, non-traumatic flow of blood either from the left atrium or the patient'"'"'s venous system, directly into the patient'"'"'s arterial system. The impellar shunt may be utilized in either a temporary or permanent implant setting.
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Citations
21 Claims
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1. A method for relieving the hemodynamic burden on a diseased left ventricle in the heart of a patient, comprising the steps of:
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implanting a shunt within the patient'"'"'s chest cavity between the interior of the patient'"'"'s left atrium and the patient'"'"'s major arterial system; positioning an impeller in said shunt; implanting a power source within the patient'"'"'s chest cavity; and actuating said impeller with the power source so as to effectuate a substantially non-turbulent, non-traumatic flow of blood from the left atrium directly into the patient'"'"'s arterial system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12)
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11. A method for relieving the hemodynamic burden on a diseased left ventricle in the heart of a patient, comprising the steps of:
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implanting a shunt between the interior of the patient'"'"'s left atrium and the patient'"'"'s major arterial system; positioning an impeller in said shunt; actuating said impeller so as to effectuate a substantially non-turbulent;
non-traumatic flow of blood from the left atrium directly into the patient'"'"'s arterial system; andvarying the actuation rate of said impeller responsive to pressure in said left atrium.
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13. A method for relieving the hemodynamic burden on a diseased left ventricle in the heart of a patient comprising the steps of:
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implanting a portable shunt within the patient'"'"'s chest cavity between the patient'"'"'s femoral vein and the patient'"'"'s femoral artery; implanting a power source with the shunt; effectuating a substantially non-turbulent, non-traumatic flow of blood through said shunt; and oxygenating the blood passing through said shunt. - View Dependent Claims (14, 15, 16)
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17. Apparatus for relieving the hemodynamic burden on a diseased left ventricle in the heart of a patient, comprising:
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a generally tubular shunt dimensioned to extend between the wall of the patient'"'"'s left atrium and the patient'"'"'s arterial system; means for permitting said shunt to be joined at one end to the patient'"'"'s left atrium and the other end to the patient'"'"'s arterial system; an impeller in said shunt; an implantable electrical power source for operating the impeller; and means responsive to the electrical power source about the periphery of said shunt for rotating said impeller to effectuate a flow of blood between the patient'"'"'s left atrium and the patient'"'"'s arterial system through said shunt when inserted. - View Dependent Claims (18, 20, 21)
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19. Apparatus for relieving the hemodynamic burden on a diseased left ventricle in the heart of a patient, comprising:
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a generally tubular shunt dimensioned to extend between the wall of then patient'"'"'s left atrium and the patient'"'"'s arterial system; means for permitting said shunt to be joined at one end to the patient'"'"'s left atrium and the other end to the patient'"'"'s arterial system; an impeller in said shunt; means about the periphery of said shunt for rotating said impeller to effectuate a flow of blood between the patient'"'"'s left atrium and the patient'"'"'s arterial system through said shunt when inserted; pressure monitoring means for detecting the pressure in the patient'"'"'s left atrium; and means for controlling the rotation of said impeller responsive to said pressure detection means.
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Specification