Abstract: A stent delivery system for use in an aorta, including: a delivery catheter comprising an outer catheter, an inner catheter, and a push rod that are arranged coaxially and sequentially from outside to inside, and a stent. The stent is a dense-mesh stent. The delivery catheter is configured to cause the outer catheter, the inner catheter, and the push rod to all be able to move relative to one another in the axial direction, and two ends of the stent being removably bound to the proximal end relative to the heart of the push rod and the proximal end relative to the heart of the inner catheter. When the stent delivery system of the disclosure is used in treating aortic aneurysms and/or aortic dissections, the force required for initial release of the stent may be reduced, and local axial compression of the partially released stent may be controlled.

Abstract: A stent, for use in an aorta, is characterized in that the stent is at least made of a first wire and a second wire of different diameters by means of weaving, and the stent is configured to be at least partially compressible and extensible in the axial direction of the stent in a natural release state, wherein the first wire has a diameter of 20-150 ?m, and the second wire has a diameter of 150-800 ?m. When the stent is used in the treatment of aortic aneurysm lesions and/or aortic dissection lesions, the stent provides low fluid permeability and a strong radial support force at the desired site in the aorta by means of the axial compressibility and extensibility of the stent, and is easily assembled into the delivery system having a suitable diameter. Further provided are the stent kit comprising the stent, and the stent delivery system.

Abstract: A stent for aorta is formed by weaving at least two types of filaments having different diameters, such as a first filament and a second filament. The stent is configured to be at least partially compressible and extensible along the axial direction of the stent in a natural release state, wherein the first filament has a diameter of 20-150 ?m, and the second filament has a diameter of 150-800 ?m. When the stent is used in the treatment of aortic aneurysm and/or aortic dissection lesions, due to the axial compressibility and extensibility of the stent, low liquid permeability and strong radial support force are provided where needed in the aorta, and due to the axial stretchability thereof, the stent can be easily assembled to a delivery system having an appropriate diameter. Also provided are a stent kit comprising the stent and a stent delivery system.

Abstract: An axially compressible bare stent for an aorta, formed by interleaving at least two wires having different diameters, i.e., a first wire and a second wire, in an overlapping manner. In a natural release state, the bare stent has a metal coverage of at least 30%. The first wire has a diameter of 20-150 ?m, and the second wire has a diameter of 150-600 ?m. During the use in the treatment of aortic aneurysms and/or aortic dissection lesions, low liquid permeability and a strong radial support force are provided at a desired location in an aorta by means of the axial compressibility of the bare stent.