A lumen support comprising a plastically deformable structure, wherein: the support comprises a plurality of cells (110; 150); each of the plurality of cells are defined by at least a first segment and a second segment; and the first segment of each cell is configured to transition from an original collapsed configuration to an original expanded configuration relative to the second segment thereby causing the structure to transition from the original collapsed configuration to the original expanded configuration, and wherein the first segment is configured to transition between contracted and expanded positions through an inversion point in which force is reduced in order to complete the transition, characterized in that the plastically deformable structure is made of a material having an elastic range between about 0.15% to about 1% and an elongation of above 30% and an ultimate tensile strength greater than 500 MPa, wherein the structure is capable of assuming an original collapsed configuration, a plastically deformed collapsed configuration, an original expanded configuration, and a plastically deformed expanded configuration, wherein no stable configurations exist between the original collapsed configuration (Fig. 2) or the original expanded configuration, and wherein said first segment is configured to plastically deform to a plastically deformed collapsed configuration creating an area for each cell that is less than the area created when said first segment is at said original collapsed configuration, wherein said first segment is configured to plastically deform to a plastically deformed expanded configuration creating an area for each cell that is greater than an area created when said first segment is at said original expanded configuration. the support comprises a plurality of cells (110; 150); each of the plurality of cells are defined by at least a first segment and a second segment; and the first segment of each cell is configured to transition from an original collapsed configuration to an original expanded configuration relative to the second segment thereby causing the structure to transition from the original collapsed configuration to the original expanded configuration, and wherein the first segment is configured to transition between contracted and expanded positions through an inversion point in which force is reduced in order to complete the transition, characterized in that the plastically deformable structure is made of a material having an elastic range between about 0.15% to about 1% and an elongation of above 30% and an ultimate tensile strength greater than 500 MPa, wherein the structure is capable of assuming an original collapsed configuration, a plastically deformed collapsed configuration, an original expanded configuration, and a plastically deformed expanded configuration, wherein no stable configurations exist between the original collapsed configuration (Fig. 2) or the original expanded configuration, and wherein said first segment is configured to plastically deform to a plastically deformed collapsed configuration creating an area for each cell that is less than the area created when said first segment is at said original collapsed configuration, wherein said first segment is configured to plastically deform to a plastically deformed expanded configuration creating an area for each cell that is greater than an area created when said first segment is at said original expanded configuration. <EOS>