A device, method, and system of deploying an embolic protection device at
a location distal to a treatment site in a vessel of a patient. A
delivery catheter is encircled by a sealing member which is expandable
from a delivery configuration to a deployed configuration. The device
creates a seal to prevent the flow of blood during the treatment of
vascular disease. A distal protection element is delivered by the
delivery catheter and deployed to filter or remove embolic debris.