Abstract: A stent valve insertable in a body vessel containing a body fluid. The stent valve includes: a valve for at least partially controlling the flow of the body fluid in the body vessel; and a scaffold, the scaffold including: an anchoring section for anchoring the scaffold to said body vessel and a valve supporting section supporting the valve. The scaffold is substantially radially expandable from a scaffold retracted configuration to a scaffold expanded configuration. The valve supporting section is expandable over a greater range of radial expansion than the anchoring section.