Stent, stent kit, and stent delivery system

A stent delivery system, comprising:

• a delivery catheter, the delivery catheter comprising an outer catheter, an inner catheter and a push rod, wherein the outer catheter, the inner catheter and the push rod are arranged coaxially with one another and arranged sequentially from exterior to interior of the delivery catheter,
• wherein the outer catheter is provided with a proximal end portion and a distal end portion, and the outer catheter is provided with a first hollow cavity penetrating through the outer catheter;
• wherein the inner catheter extends in the first hollow cavity at the distal end portion of the outer catheter, and the inner catheter is provided with a second hollow cavity penetrating through the inner catheter;
• and
• wherein the push rod extends through the first hollow cavity of the outer catheter and the second hollow cavity of the inner catheter, and extends out of a distal end of the inner catheter;
• and
• a stent, the stent being releasably maintained between the push rod and the outer catheter in a delivery configuration and being arranged in the first hollow cavity at the proximal end portion of the outer catheter, the stent being used in an aorta, the stent being formed by weaving at least two kinds of wires with different diameters, the at least two kinds of wires comprising first wires and second wires, and the stent being configured to be at least partially compressible and extendable along an axial direction of the stent in a natural release state, wherein a diameter of each of the first wires ranges from 20 μm to 150 μm, and a diameter of each of the second wires ranges from 150 μm to 800 μm,
• wherein the delivery catheter is configured so that the outer catheter, the inner catheter and the push rod are axially movable relative to one another, and one end of the stent is removably constrained to a proximal end of the push rod, and another end of the stent is removably constrained to a proximal end of the inner catheter;
• wherein the second wires comprise two kinds of thick wires with different diameters, the two kinds of thick wires comprising first thick wires and second thick wires, wherein a diameter of each of the first thick wires ranges from 150 μm to 300 μm, and a diameter of each of the second thick wires ranges from 300 μm to 600 μm;
• wherein the stent is formed by weaving 96-202 wires, among which the second wires comprise 6-24 first thick wires and 4-24 second thick wires, and remaining wires are the first wires, provided that a sum of a number of the first thick wires and a number of the second thick wires is less than or equal to 30.