Intraluminal medical device with cannula for controlled retrograde flow

摘要

Prosthetic valves for regulating fluid flow through a body vessel are described. The valves include a valve member that includes at least a portion that is capable of moving to selectively permit and substantially prevent fluid flow through the body vessel, either alone or with one or more additional valve members. A cannula is associated with the valve and permits a controlled amount of fluid flow through the valve, such as retrograde flow while the valve member substantially prevents fluid flow through the body vessel.