Methods for preventing distal embolization from the vertebrobasilar artery using flow reversal
AssigneeCoAxia, Inc.
InventorDenise R. Barbut
Life of this patent
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Abstract
The invention provides a medical device having a catheter and one or more expandable constricting/occluding members. The catheter has a lumen communicating with a port at its distal end. The lumen and port are adapted for introduction of therapeutic or diagnostic devices, including an angioplasty/stent catheter and an atherectomy catheter, into a vertebral or basilar artery. The constrictor/occluder is mounted proximal to the port of the catheter. Manometers may be mounted distal to one or more constrictors for measuring pressure distal to the constrictor(s). Methods of using the devices for preventing distal embolization during vertebral and/or basilar procedures by reversing blood flow in the vertebral artery toward the subclavian artery are disclosed.
Claims17
A method for treating a vertebral artery lesion, the method comprising the steps of:
- inserting a distal end of a catheter into a brachiocephalic trunk, the catheter having a proximal end, the distal end of the catheter having a constricting member;
- locating the constricting member at a location in the brachiocephalic trunk upstream a vertebral artery having a lesion;
- expanding the constricting member at the location to constrict the brachiocephalic trunk, wherein blood flow in the vertebral artery is reversed to pass over the lesion and toward a subclavian artery;
- and
- advancing a therapeutic instrument into the vertebral artery to treat the lesion.
Dependencies are inferred from the claim text.