Cobalt-chromium alloy stent and drug eluting stent

A cobalt-chromium alloy stent, comprising a plurality of body units;

• wherein the body units are connected to each other to become tubelike;
• each of the body units is composed of a plurality of support rings connected by flexible ribs, and the body units are in the form of a sinusoidal wave;
• a body of each of the flexible ribs is a coil spring;
• adjacent body units are connected by a plurality of connecting ribs;
• and
• a body of each of the connecting ribs is a coil spring;
• wherein the support rings are connected to each other by the flexible ribs as follows:
• a first connecting slot (a) and a second connecting slot (b) are respectively provided in two ends of each support ring, a connecting post is provided at each of two ends of the coil spring of the flexible rib, and two connecting posts of the same flexible rib are respectively connected to the first connecting slot (a) of one support ring and the second connecting slot (b) of another support ring;
• wherein the body units are connected to each other by the connecting ribs as follows:
• a third connecting slot (c) is provided in an arc of each support ring to be connected, a connecting post is provided at each of two ends of the coil spring of the connecting rib, and two connecting posts of the same connecting rib are respectively connected to the third connecting slots (c) of two adjacent support rings.