Devices and methods for preventing distal embolization using flow reversal and perfusion augmentation within the cerebral vasculature
First Claim
1. A method for reversing blood flow in a cerebral artery, comprising the steps of:
- locating a first constricting member in the right brachiocephalic artery upstream of the right common carotid artery;
locating a second constricting member in the aorta downstream of the left common carotid artery;
expanding the first constricting member to at least partially obstruct the right brachiocephalic artery; and
expanding the second constricting member to at least partially obstruct the aorta, wherein flow in the right common carotid artery is reversed to pass into the subclavian artery.
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Accused Products
Abstract
A medical device having a catheter and one or more expandable constricting/occluding members. The catheter is adapted for use with therapeutic or diagnostic devices, including an angioplasty/stent catheter and an atherectomy catheter. A first constrictor/occluder mounted at the distal end of the catheter is adapted for placement in a brachiocephalic or subclavian artery. A second constrictor mounted proximal to the first constrictor/occluder is adapted for placement in the descending aorta. Pressure measuring devices may be included, and filters may be used to capture embolic debris. Methods of using the devices for preventing distal embolization during extracranial or intracranial carotid procedures or vertebral artery procedures by augmenting collateral cerebral circulation by coarctation of the aorta to enhance reversal of blood flow in an internal carotid artery, an external carotid artery, and/or a common carotid artery toward the subclavian artery are disclosed.
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Citations
8 Claims
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1. A method for reversing blood flow in a cerebral artery, comprising the steps of:
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locating a first constricting member in the right brachiocephalic artery upstream of the right common carotid artery;
locating a second constricting member in the aorta downstream of the left common carotid artery;
expanding the first constricting member to at least partially obstruct the right brachiocephalic artery; and
expanding the second constricting member to at least partially obstruct the aorta, wherein flow in the right common carotid artery is reversed to pass into the subclavian artery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification