Cannulae for selectively enhancing blood flow
First Claim
1. A perfusion cannula system for directing blood through the vasculature of a patient, comprising:
- a cannula body comprising a proximal end, a distal end, and at least one lumen extending therebetween;
a balloon located on an exterior surface of the cannula body; and
means for deploying the balloon within the vasculature whereby space may be provided between a vessel wall and the cannula body when the cannula body resides within the patient to permit blood flow past the cannula body.
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Abstract
A perfusion cannula system for directing blood through the vasculature of a patient comprises a cannula body having a proximal end, a distal end, and at least one lumen extending therebetween. The perfusion cannula system enhances blood flow past the cannula when the cannula body resides within the patient. A first balloon can be located on an exterior surface of the cannula body and the balloon can be deployed within the vasculature whereby space may be provided between a vessel wall and the cannula body. A cannula body can have an aperture formed therein in fluid communication with a lumen. A sleeve can be carried by the cannula and can be configured to be moveable relative to the aperture to selectively cover and uncover the aperture as desired.
106 Citations
39 Claims
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1. A perfusion cannula system for directing blood through the vasculature of a patient, comprising:
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a cannula body comprising a proximal end, a distal end, and at least one lumen extending therebetween;
a balloon located on an exterior surface of the cannula body; and
means for deploying the balloon within the vasculature whereby space may be provided between a vessel wall and the cannula body when the cannula body resides within the patient to permit blood flow past the cannula body. - View Dependent Claims (2, 3, 4, 5)
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6. A perfusion cannula system for directing blood through the vasculature of a patient, comprising:
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a cannula body comprising a proximal end, a distal end, and at least one lumen extending therebetween; and
means for creating space around the cannula body within the vasculature to permit blood flow past the cannula body. - View Dependent Claims (7, 8, 9, 10)
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- 11. A perfusion system for directing blood through the vasculature of a patient, comprising a multilumen cannula and a plurality of radially spaced balloons configured to be selectively inflated while residing with the vasculature to create space around the cannula within the vasculature to permit blood flow past the cannula.
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14. A perfusion cannula system, comprising:
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a cannula comprising a cannula body defining at least one lumen extending between a proximal end and a distal end, said cannula body having an aperture formed therein in fluid communication with said lumen; and
a sleeve carried by the cannula and configured to be moveable relative to the aperture to selectively cover and uncover the aperture as desired. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A perfusion cannula system comprising:
a cannula body comprising a proximal end, a distal end, at least one lumen extending therebetween, and a means for enhancing blood flow past the cannula when the cannula body resides within the patient. - View Dependent Claims (21, 22, 23, 24)
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25. An extracardiac heart assist system, comprising:
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a pump having an inlet and an outlet;
an inflow conduit coupled with the inlet;
an outflow conduit coupled with the outlet; and
an intravascular conduit having a proximal end, a distal end, at least one lumen extending therebetween, and a means for selectively enhancing blood flow past the cannula when the cannula resides within the patient, the intravascular conduit configured to provide fluid communication between the vasculature of a patient and at least one of the inflow conduit and the outflow conduit.. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A method of treating a patient using an extracardiac heart assist system, comprising:
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inserting a cannula system into the vasculature of a patient, wherein the cannula system is actuatable to enhance blood flow past the cannula when the cannula resides in the vasculature of the patient;
selectively actuating the cannula system, whereby blood flow past the cannula is enhanced. - View Dependent Claims (36, 37, 38, 39)
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Specification