Implantable cerebral protection device and methods of use
First Claim
1. A method for protecting a patient against cerebral embolization, said method comprising the steps of:
- providing an aortic diverter comprising an elongate tube having a wall impermeable to emboli, the tube having a proximal end terminating in a substantially circular edge adapted to fill the lumen of the aorta, and a distal end, wherein the proximal and distal ends are substantially open allowing blood to enter the proximal end, flow through the tube, and exit the distal end;
positioning the aortic diverter within the aortic arch; and
securing the aortic diverter to the lumen of the aorta, the proximal end of the aortic diverter extending downstream of the brachiocephalic trunk.
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Accused Products
Abstract
The present invention is directed to devices and methods for diverting emboli away from the carotid arteries in the aorta. The devices are aortic diverters that generally comprise a hollow tube with a substantially cylindrical or conical wall, which is impermeable to emboli and which has open ends that allow blood to enter one end, flow through the tube and exit the other end. Additionally, snowshoe aortic diverters, which are planar rather than cylindrical are also disclosed. The methods of the invention generally include the steps of providing an aortic diverter carried by an intravascular catheter, introducing the intravascular catheter into the vascular system, advancing the intravascular catheter into the aortic arch to the region of the carotid arteries, and deploying the aortic diverter.
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Citations
15 Claims
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1. A method for protecting a patient against cerebral embolization, said method comprising the steps of:
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providing an aortic diverter comprising an elongate tube having a wall impermeable to emboli, the tube having a proximal end terminating in a substantially circular edge adapted to fill the lumen of the aorta, and a distal end, wherein the proximal and distal ends are substantially open allowing blood to enter the proximal end, flow through the tube, and exit the distal end;
positioning the aortic diverter within the aortic arch; and
securing the aortic diverter to the lumen of the aorta, the proximal end of the aortic diverter extending downstream of the brachiocephalic trunk. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An aortic diverter insertable into an aorta for diverting emboli away from the carotid arteries, comprising:
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a hollow tube comprising a substantially cylindrical or conical wall having a plurality of openings permeable to blood and impermeable to emboli, wherein, when the hollow tube is deployed, an area defined by said plurality of openings is smaller than a surface area of the remainder of the wall, the hollow tube having a proximal end terminating in a substantially circular edge adapted to fill the lumen of an aorta, and a distal end, wherein the proximal and distal ends are substantially open allowing blood to enter the proximal end, flow through the hollow tube, and exit the distal end; and
an anchoring mechanism for securing the hollow tube to the lumen of the aorta. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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Specification