Patent ID: 8876853

Claim:
An embolic protection device for use during a surgical procedure in treating a patient's vasculature including first and second blood vessels intersecting one another at a juncture defining an ostium, the embolic protection device comprising: a catheter having proximal and distal ends, the catheter defining an internal working channel in communication with a working channel opening formed in a distal region of the catheter, the working channel and the working channel opening dimensioned to slideably receive an interventional device; a marker band supported by the catheter; and an expandable structure supported on the distal region of the catheter, the expandable structure comprising a sealing structure and a support structure, the support structure being connected to and extending proximally from the marker band such that the support structure is configured to contact the first blood vessel at a first location, and the sealing structure being connected to and extending distally from the marker band such that the sealing structure is configured to contact the first blood vessel at a second location opposite the first location adjacent the ostium to interfere with blood flow through the ostium, the working channel opening being configured and dimensioned to allow the interventional device to enter the second blood vessel.