| 摘要 |
The present invention provides a method and device for preventing cerebral embolization during endovascular procedures in the carotid arteries. The invention comprises a guide catheter and balloon, which may selectively occlude the common carotid artery, and further comprises a wire and balloon, which may selectively occlude the internal carotid artery. Occlusion of the common carotid artery will induce retrograde flow at the site, redirecting emboli to the external carotid artery. Occlusion of the internal carotid artery reduces the risk of emboli migrating to the brain, and allows clearance of the site by antegrade blood flow from the common carotid artery. Occlusion of both the common and internal carotid arteries induces a quiescent state at the site during the procedure. Control of blood flow by selective inflation and deflation of either or both balloons, in concert with the procedures, will reduce the risk of emboli migrating to the brain.
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