Patent ID: 8663315

Claim:
A stent for protecting a branch blood vessel at a branch-point lesion, which is inserted into and widened in a main blood vessel having the branch blood vessel extending in a slant from the branch-point lesion, and thereby expanding the main blood vessel, the stent comprising: a plurality of cell wires disposed in a lengthwise direction of the stent; ties connected between the cell wires; and at least two radiopaque markers, which are each formed at one side of each tie, and which are formed in a circumferential direction of the stent, wherein the stent includes cells, which are to be widened between the cell wires and the ties, and include first cells and second cells having a relatively smaller size than the first cells, wherein the second cells are formed in areas where the ties between the cell wires are shorter relative to the ties between the cell wires in the first cells, wherein the markers are formed on the respective ties between the first cells, wherein the markers are disposed in threes at intervals of 120° in the circumferential direction of the stent, wherein the stent further includes other radiopaque markers formed on the respective cells that are adjacent to each other in a lengthwise direction thereof.