| 摘要 |
An endovascular method and apparatus for treating a stenosis of a carotid artery of a patient provides cerebral protection during placement of a stent at the expanded stenosis. The first catheter (68) has a first balloon (70) at its distal end and a first lumen (73), and a guiding (74), it positioned in the carotid artery (62) of the patient so that the first balloon is downstream from the stenosis (63). The first balloon is inflated in the carotid artery downstream from the stenosis to block the carotid artery to provide cerebral protection for the patient and to anchor the distal end of the first catheter in the carotid artery. An elongate stiffening member (75) may be inserted in the first lumen of the first catheter to stiffen the first catheter. The first catheter can then be used as a guide to position further catheters for treating the stenosis. A second balloon may be inflated to expand the stenosis and a stent is positioned at the expanded stenosis. Suction and/or lavage may then be performed also with cerebral protection. |
