An endo luminal support structure (10) includes strut members(11) interconnected by swivel joints (15) to form a series of linkedscissor mechanisms. The structure can be remotely actuated to compress orexpand its shape by adjusting the scissor joints within a range of motion.In particular, the support structure can be repositioned within the bodylumen or retrieved from the lumen. The support structure can be employed tointroduce and support a prosthetic valve (100) within a body lumen.
