Apparatus and methods for reducing embolization during treatment of carotid artery disease
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United States of America Patent
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Jun 21, 2005
Grant Date -
Nov 21, 2002
app pub date -
Mar 15, 2002
filing date -
May 13, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
Methods and apparatus are provided for removing emboli during an angioplasty, stenting or surgical procedure comprising a catheter having an occlusion element, an aspiration lumen, and a blood outlet port in communication with the lumen, a guide wire having a balloon, a venous return sheath with a blood inlet port, and tubing that couples the blood outlet port to the blood inlet port. Apparatus is also provided for occluding the external carotid artery to prevent reversal of flow into the internal carotid artery. The pressure differential between the artery and the vein provides reverse flow through the artery, thereby flushing emboli. A blood filter may optionally be included in-line with the tubing to filter emboli from blood reperfused into the patient.
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