| 摘要 |
<p>An endovascular method for treating a stenosis of a carotid artery of a patient provides cerebral protection during placement of a stent at the expanded stenosis. The method preferably comprises the steps of providing a first catheter comprising a first balloon at a distal end thereof, the catheter having a first lumen therein; and positioning the first catheter in the carotid artery of the patient so that the first balloon is downstream from the stenosis. 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 may be inserted in the first lumen of the first catheter to stiffen the first catheter. Accordingly, the first catheter can then be used as a guide to position further catheters for treating the stenosis. The method may also include the steps of providing a second catheter comprising a second balloon at a distal end, and positioning the second balloon at the stenosis by sliding the second catheter over the catheter guide while cerebral protection is provided by the inflated first balloon. The second balloon may be inflated to expand the stenosis also while cerebral protection is provided by the inflated first balloon. A stent is positioned at the expanded stenosis while protection is maintained. Suction and/or lavage may then be performed also with cerebral protection.</p> |
