A system for treating a blood vessel, the system comprising: a delivery catheter (102,112) loaded with a plurality of tacks, each tack of the plurality of tacks being configured to be individually deployed within a blood vessel, each of the tacks comprising: a frame consisting of a single column of cells, the column of cells comprising: a pair of concentric side rings (290a, 290b) spaced apart coaxially from each other, each of the pair of concentric side rings having a compressed state and an expanded state, wherein each side ring of the pair of concentric side rings comprises a plurality of struts in an undulating pattern defined by long struts connected to form a first apex and short struts connected to form a second apex, and wherein each side ring of the pair of concentric side rings forms a respective end of the device; and a plurality of longitudinally extending bridge members connecting the pair of concentric side rings, wherein each bridge member of the plurality of longitudinally extending bridge members connects to one concentric side ring of the pair of concentric side rings at one end and to the other concentric side ring of the pair of concentric side rings at the opposite end; wherein each cell of the single column of cells comprises a portion of each of the pair of concentric side rings and two of the plurality of longitudinally extending bridge members. a frame consisting of a single column of cells, the column of cells comprising: a pair of concentric side rings (290a, 290b) spaced apart coaxially from each other, each of the pair of concentric side rings having a compressed state and an expanded state, wherein each side ring of the pair of concentric side rings comprises a plurality of struts in an undulating pattern defined by long struts connected to form a first apex and short struts connected to form a second apex, and wherein each side ring of the pair of concentric side rings forms a respective end of the device; and a plurality of longitudinally extending bridge members connecting the pair of concentric side rings, wherein each bridge member of the plurality of longitudinally extending bridge members connects to one concentric side ring of the pair of concentric side rings at one end and to the other concentric side ring of the pair of concentric side rings at the opposite end; wherein each cell of the single column of cells comprises a portion of each of the pair of concentric side rings and two of the plurality of longitudinally extending bridge members. a pair of concentric side rings (290a, 290b) spaced apart coaxially from each other, each of the pair of concentric side rings having a compressed state and an expanded state, wherein each side ring of the pair of concentric side rings comprises a plurality of struts in an undulating pattern defined by long struts connected to form a first apex and short struts connected to form a second apex, and wherein each side ring of the pair of concentric side rings forms a respective end of the device; and a plurality of longitudinally extending bridge members connecting the pair of concentric side rings, wherein each bridge member of the plurality of longitudinally extending bridge members connects to one concentric side ring of the pair of concentric side rings at one end and to the other concentric side ring of the pair of concentric side rings at the opposite end; wherein each cell of the single column of cells comprises a portion of each of the pair of concentric side rings and two of the plurality of longitudinally extending bridge members.